Patent Publication Number: US-2021190525-A1

Title: Device, Method, and Graphical User Interface for Synchronizing Two or More Displays

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation of U.S. application Ser. No. 15/971,458, filed May 4, 2018, which is a continuation of U.S. application Ser. No. 14/291,970, filed May 30, 2014, now U.S. Pat. No. 9,965,035, which claims priority to U.S. Provisional Patent Application No. 61/832,842, filed Jun. 8, 2013, which applications are incorporated herein by reference in their entirety. 
     This application is also related to the following applications: U.S. Provisional Application Ser. No. 61/793,924, filed Mar. 15, 2013, entitled “Voice and Touch User Interface;” U.S. application Ser. No. 13/032,614, filed Feb. 22, 2011, now U.S. Pat. No. 8,970,647, entitled “Pushing a Graphical User Interface to a Remote Device with Display Rules Provided by the Remote Device;” U.S. application Ser. No. 12/683,218, filed Jan. 6, 2010, now abandoned, entitled “Pushing a User Interface to a Remote Device;” U.S. application Ser. No. 12/119,960, filed May 13, 2008, now abandoned, entitled “Pushing a User Interface to a Remote Device;” U.S. application Ser. No. 13/175,581, filed Jul. 1, 2011, now U.S. Pat. No. 9,870,130, entitled “Pushing a User Interface to a Remote Device;” U.S. application Ser. No. 13/161,339, filed Jun. 15, 2011, now U.S. Pat. No. 9,311,115, entitled “Pushing a Graphical User Interface to a Remote Device with Display Rules Provided by the Remote Device;” U.S. application Ser. No. 13/250,947, filed Sep. 30, 2011, now U.S. Pat. No. 10,496,753, entitled “Automatically Adapting User Interfaces for Hands-Free Interaction;” U.S. application Ser. No. 12/987,982, filed Jan. 10, 2011, now U.S. Pat. No. 9,318,108, entitled “Intelligent Automated Assistant;” U.S. Provisional Application Ser. No. 61/295,774, filed Jan. 18, 2010, entitled “Intelligent Automated Assistant;” U.S. Provisional Application Ser. No. 61/493,201, filed Jun. 3, 2011, entitled “Generating and Processing Data Items that Represent Tasks to Perform;” U.S. Provisional Application Ser. No. 61/657,744, filed Jun. 9, 2012, entitled “Automatically Adapting User Interface for Hands-Free Interaction;” U.S. application Ser. No. 12/207,316, filed Sep. 9, 2008, now abandoned, entitled “Radio with Personal DJ;” U.S. Provisional Application Ser. No. 61/727,554, filed Nov. 16, 2012, entitled “System and Method for Negotiating Control of a Shared Audio or Visual Resource;” U.S. Application Ser. No. 61/832,818, filed Jun. 8, 2013, entitled “Mapping Application with Several User Interfaces;” U.S. Provisional Application Ser. No. 61/832,841, filed Jun. 8, 2013, entitled “Device and Method for Generating User Interfaces from a Template;” and U.S. application Ser. No. 13/913,428, filed Jun. 8, 2013, now abandoned, entitled “Application Gateway for Providing Different User Interfaces for Limited Distraction and Non-Limited Distraction Contexts,” which applications are incorporated herein by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     This relates generally to electronic devices with touch-sensitive surfaces, including but not limited to electronic devices with touch-sensitive surfaces that synchronize two or more displays. 
     BACKGROUND 
     The use of touch-sensitive surfaces as input devices for computers and other electronic computing devices has increased significantly in recent years. Exemplary touch-sensitive surfaces include touch pads and touch screen displays. Such surfaces are widely used to manipulate user interface objects on a first display associated with first electronic device. 
     Exemplary manipulations include adjusting the position and/or size of one or more user interface objects or activating buttons or opening files/applications represented by user interface objects or otherwise manipulating user interfaces. Exemplary user interface objects include digital images, video, text, icons, control elements such as buttons and other graphics. 
     Sometimes users have access to multiple different displays that are capable of displaying different content. For example, a passenger in a car or other vehicle may have access to a smart phone and its display, as well as access to a car information/entertainment system and its display(s). But when multiple different displays are available, methods for displaying content on these different displays are cumbersome and inefficient. For example, displaying the same information on the different displays generally does not provide any useful additional information to the user, while displaying unrelated information on the different displays can be confusing and inefficient for the user and sometime causes the user to spend extra time keeping relevant content displayed on both devices. In addition, these methods take longer than necessary, thereby wasting energy. This latter consideration is particularly important in battery-operated devices. 
     SUMMARY 
     Accordingly, there is a need for electronic devices with more efficient methods and interfaces for synchronizing two or more displays. Such methods and interfaces optionally complement or replace conventional methods for displaying information on two or more displays. Such methods and interfaces reduce the cognitive burden on a user and produce a more efficient human-machine interface. For battery-operated devices, such methods and interfaces conserve power and increase the time between battery charges. 
     Additionally, in many situations controls for use in interacting with such user interfaces displayed on the displays are often rigidly associated with a single display. This limits the flexibility of the controls, which can result in an inefficient user interface. Accordingly, there is a need for a system that seamlessly maps controls and other input sources to user interfaces displayed on different displays in a flexible manner. However, when mapping different controls to different displays, it would be easy to mistakenly associate a control with the wrong display. Moreover, taking a long time to determine which display is associated with a particular control would introduce a delay into the user&#39;s interactions with the user interface that would degrade the user experience. As such, there is a need for a fast, accurate and efficient system and method for mapping controls and other input sources to different displays of the two or more displays. 
     The above deficiencies and other problems associated with user interfaces for electronic devices with touch-sensitive surfaces are reduced or eliminated by the disclosed devices. In some embodiments, the device is a desktop computer. In some embodiments, the device is portable (e.g., a notebook computer, tablet computer, or handheld device). In some embodiments, the device has a touchpad. In some embodiments, the device has a touch-sensitive display (also known as a “touch screen” or “touch screen display”). In some embodiments, the device has a graphical user interface (GUI), one or more processors, memory and one or more modules, programs or sets of instructions stored in the memory for performing multiple functions. In some embodiments, the user interacts with the GUI primarily through finger contacts and gestures on the touch-sensitive surface. In some embodiments, the functions optionally include image editing, drawing, presenting, word processing, website creating, disk authoring, spreadsheet making, game playing, telephoning, video conferencing, e-mailing, instant messaging, workout support, digital photographing, digital videoing, web browsing, digital music playing, and/or digital video playing. Executable instructions for performing these functions are, optionally, included in a non-transitory computer readable storage medium or other computer program product configured for execution by one or more processors. 
     In accordance with some embodiments, a method is performed at a first electronic device that includes a first display. The method includes: displaying a first user interface on the first display, where: the first user interface enables selection between a plurality of selectable objects; the first user interface corresponds to a second user interface displayed on a second display different from the first display; and a first object from the plurality of selectable objects is displayed as a selected object in the second user interface. While the first object is displayed as the selected object in the second user interface, the method includes: detecting a first input from a user that corresponds to a request to display information about a second object in the plurality of selectable objects in the first user interface; in response to detecting the first input, updating the first user interface on the first display in accordance with the first input to display respective information about the second object while display of the first object as the selected object in the second user interface is maintained; and after updating the first user interface in accordance with the first input, detecting a second input from a user that corresponds to a request to select the second object as the selected object. In response to detecting the second input, the method further includes: updating the first user interface on the first display in accordance with the second input to display the second object as the selected object; and providing, to the second display, information that enables the second user interface on the second display to be updated to display the second object as the selected object instead of the first object. 
     In accordance with some embodiments, a first electronic device includes a first display unit configured to display a first user interface on the first display unit, where: the first user interface enables selection between a plurality of selectable objects; the first user interface corresponds to a second user interface displayed on a second display unit different from the first display unit; and a first object from the plurality of selectable objects is displayed as a selected object in the second user interface. The first electronic device also includes a processing unit coupled to the first display unit. While the first object is displayed as the selected object in the second user interface, the processing unit is configured to: detect a first input from a user that corresponds to a request to enable display of information about a second object in the plurality of selectable objects in the first user interface; in response to detecting the first input, update the first user interface on the first display unit in accordance with the first input to enable display of respective information about the second object while display of the first object as the selected object in the second user interface is maintained; and after updating the first user interface in accordance with the first input, detect a second input from a user that corresponds to a request to select the second object as the selected object. In response to detecting the second input, the processing unit is further configured to: update the first user interface on the first display unit in accordance with the second input to enable display of the second object as the selected object; and provide, to the second display unit, information that enables the second user interface on the second display unit to be updated to enable display of the second object as the selected object instead of the first object. 
     In accordance with some embodiments, a method is performed at a portable electronic device that includes a portable-device display and is in communication with a vehicle display of a vehicle. The method includes: obtaining a set of map search results that includes a plurality of candidate destinations; displaying a portable-device navigation interface on the portable-device display, where the portable-device navigation interface enables selection of a destination from the plurality of candidate destinations; and sending information to the vehicle display that enables the vehicle display to display a vehicle navigation interface, where a first destination of the plurality of candidate destinations is a selected destination in the vehicle navigation interface. While the first destination is the selected destination in the vehicle navigation interface, the method includes: detecting a first input from a user that corresponds to a request to display information about one or more candidate destinations in the plurality of candidate destinations other than the first destination; in response to detecting the first input, updating the portable-device navigation interface on the portable-device display in accordance with the first input without the vehicle navigation interface on the vehicle display being updated; and after updating the portable-device navigation interface in accordance with the first input, detecting a second input from a user that corresponds to a request to select a second destination in the plurality of candidate destinations as the selected destination. In response to detecting the second input, the method further includes: updating the portable-device navigation interface on the portable-device display in accordance with the second input to display the second destination as the selected destination; and sending information to the vehicle display that enables the vehicle display to update the vehicle navigation interface in accordance with the second input to display the second destination as the selected destination. 
     In accordance with some embodiments, a portable electronic device includes a portable-device display unit configured to display a portable-device navigation interface, a communications interface unit configured to communicate with a vehicle display unit of a vehicle, and a processing unit coupled to the portable-device display unit and the communications interface unit. The processing unit is configured to: obtain a set of map search results that includes a plurality of candidate destinations; enable display of the portable-device navigation interface on the portable-device display unit, where the portable-device navigation interface enables selection of a destination from the plurality of candidate destinations; and send information to the vehicle display unit that enables the vehicle display unit to enable display of the vehicle navigation interface, where a first destination of the plurality of candidate destinations is a selected destination in the vehicle navigation interface. While the first destination is the selected destination in the vehicle navigation interface, the processing unit is also configured to: detect a first input from a user that corresponds to a request to enable display of information about one or more candidate destinations in the plurality of candidate destinations other than the first destination; in response to detecting the first input, update the portable-device navigation interface on the portable-device display unit in accordance with the first input without the vehicle navigation interface on the vehicle display unit being updated; and after updating the portable-device navigation interface in accordance with the first input, detect a second input from a user that corresponds to a request to select a second destination in the plurality of candidate destinations as the selected destination. In response to detecting the second input, the processing unit is further configured to: update the portable-device navigation interface on the portable-device display unit in accordance with the second input to enable display of the second destination as the selected destination; and send information to the vehicle display unit that enables the vehicle display unit to update the vehicle navigation interface in accordance with the second input to enable display of the second destination as the selected destination. 
     In accordance with some embodiments, a method is performed at an electronic device that is in communication with a plurality of displays that include a first display and a second display. The method includes receiving first input information that is indicative of a first input detected by a first input source of a plurality of input sources, where the first input information includes: a first identifier for the first input source; and a first input description that describes the first input. The method also includes selecting a first affected display from the plurality of displays based on the first identifier and an input-source mapping that maps input sources to corresponding displays. The method further includes sending, to the first affected display, update information that enables the first affected display to be updated in accordance with the first input. 
     In accordance with some embodiments, an electronic device includes a communications interface unit configured to communicate with a plurality of display units that include a first display unit and a second display unit, and a processing unit coupled to the communications interface unit. The processing unit is configured to receive a first input information that is indicative of a first input detected by a first input source of a plurality of input sources, where the first input information includes: a first identifier for the first input source; and a first input description that describes the first input. The processing unit is also configured to select a first affected display from the plurality of displays based on the first identifier and an input-source mapping that maps input sources to corresponding displays. The processing unit is further configured to send, to the first affected display, update information that enables the first affected display to be updated in accordance with the first input. 
     In accordance with some embodiments, an electronic device includes a communications interface for communicating with one or more displays (e.g., a first display, a second display, a portable-device display, and/or a vehicle display), one or more processors, memory, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the one or more processors and the one or more programs include instructions for performing the operations of any of the methods described herein. In accordance with some embodiments, a non-transitory computer readable storage medium has stored therein instructions which when executed by an electronic device that is in communication with one or more displays, cause the device to perform the operations of any of the methods referred described herein. In accordance with some embodiments, a graphical user interface on an electronic device that is in communication with one or more displays, a memory, and one or more processors to execute one or more programs stored in the memory including one or more of the elements displayed in any of the methods described above, which are updated in response to inputs, as described in any of the methods described herein. In accordance with some embodiments, an electronic device that is in communication with one or more displays includes means for performing the operations of any of the methods described herein. In accordance with some embodiments, an information processing apparatus, for use in an electronic device that is in communication with one or more displays, includes means for performing the operations of any of the methods described herein. 
     Thus, electronic devices with displays are provided with more efficient methods and interfaces for synchronizing two or more displays, thereby increasing the effectiveness, efficiency, and user satisfaction with such devices. Such methods and interfaces may complement or replace conventional methods for synchronizing two or more displays. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For a better understanding of the various described embodiments, reference should be made to the Description of Embodiments below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures. 
         FIG. 1A  is a block diagram illustrating a portable multifunction device with a touch-sensitive display in accordance with some embodiments. 
         FIG. 1B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. 
         FIG. 2  illustrates a portable multifunction device having a touch screen in accordance with some embodiments. 
         FIG. 3  is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. 
         FIG. 4A  illustrates an exemplary user interface for a menu of applications on a portable multifunction device in accordance with some embodiments. 
         FIG. 4B  illustrates an exemplary user interface for a multifunction device with a touch-sensitive surface that is separate from the display in accordance with some embodiments. 
         FIG. 5A  is a block diagram illustrating an operating environment in which a portable multifunction device communicates with an external presentation system and/or server in accordance with some embodiments. 
         FIG. 5B  is a flow diagram illustrating a method of sending update information to an affected display in accordance with some embodiments. 
         FIGS. 6A-6V  illustrate exemplary user interfaces for synchronizing two or more displays in accordance with some embodiments. 
         FIGS. 6W-6FF  illustrate exemplary user interfaces for sending update information to an affected display in accordance with some embodiments. 
         FIGS. 7A-7D  are flow diagrams illustrating a method of synchronizing two or more displays in accordance with some embodiments. 
         FIGS. 8A-8B  are flow diagrams illustrating a method of synchronizing two or more displays in accordance with some embodiments. 
         FIGS. 9A-9C  are flow diagrams illustrating a method of sending update information to an affected display in accordance with some embodiments. 
         FIG. 10  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 11  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 12  is a functional block diagram of an electronic device in accordance with some embodiments. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Many electronic devices update a graphical user interface on a display associated with the electronic device in response to the manipulation of user interface objects displayed on the display. The first electronic device described below improves on these methods by synchronizing (in some cases) a second graphical interface on a second display with a first graphical user interface on a first display associated with the first electronic device. In some embodiments, the second display is associated with a second electronic device different from the first electronic device. In some embodiments, the first electronic device synchronizes the first display and the second display in response to manipulation of user interface objects on a first graphical user interface (e.g., manipulated with a first touch-sensitive surface or a first touch screen display associated with the first electronic device). In some other embodiments, the first electronic device synchronizes the first display and the second display in response to manipulation of user interface objects on a second graphical user interface (e.g., manipulated with a second touch-sensitive surface or a second touch screen display associated with the second electronic device). 
     Below,  FIGS. 1A-1B, 2, and 3  provide a description of exemplary devices.  FIGS. 4A-4B and 6A -FF illustrate exemplary user interfaces.  FIGS. 7A-7D and 8A-8B  are flow diagrams illustrating a method of synchronizing two or more displays.  FIGS. 9A-9C  are flow diagrams illustrating a method of sending update information to an affected display. The user interfaces in  FIGS. 6A-6V  are used to illustrate the processes in  FIGS. 7A-7D and 8A-8B . The user interfaces in  FIGS. 6W-6FF  are used to illustrate the processes in  FIGS. 9A-9C . 
     Exemplary Devices 
     Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the various described embodiments. However, it will be apparent to one of ordinary skill in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments. 
     It will also be understood that, although the terms first, second, etc. are, in some instances, used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the scope of the various described embodiments. The first contact and the second contact are both contacts, but they are not the same contact. 
     The terminology used in the description of the various described embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,” “including,” “comprises,” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     As used herein, the term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, construed to mean “upon determining” or “in response to determining” or ‘upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context. 
     Embodiments of electronic devices, user interfaces for such devices, and associated processes for using such devices are described. In some embodiments, the device is a portable communications device, such as a mobile telephone, that also contains other functions, such as PDA and/or music player functions. Exemplary embodiments of portable multifunction devices include, without limitation, the iPhone®, iPod Touch®, and iPad® devices from Apple Inc. of Cupertino, Calif. Other portable electronic devices, such as laptops or tablet computers with touch-sensitive surfaces (e.g., touch screen displays and/or touch pads), are, optionally, used. It should also be understood that, in some embodiments, the device is not a portable communications device, but is a desktop computer with a touch-sensitive surface (e.g., a touch screen display and/or a touch pad). 
     In the discussion that follows, an electronic device that includes a display and a touch-sensitive surface is described. It should be understood, however, that the electronic device optionally includes one or more other physical user-interface devices, such as a physical keyboard, a mouse and/or a joystick. 
     The device typically supports a variety of applications, such as one or more of the following: a drawing application, a presentation application, a word processing application, a website creation application, a disk authoring application, a spreadsheet application, a gaming application, a telephone application, a video conferencing application, an e-mail application, an instant messaging application, a workout support application, a photo management application, a digital camera application, a digital video camera application, a web browsing application, a digital music player application, and/or a digital video player application. 
     The various applications that are executed on the device optionally use at least one common physical user-interface device, such as the touch-sensitive surface. One or more functions of the touch-sensitive surface as well as corresponding information displayed on the device are, optionally, adjusted and/or varied from one application to the next and/or within a respective application. In this way, a common physical architecture (such as the touch-sensitive surface) of the device optionally supports the variety of applications with user interfaces that are intuitive and transparent to the user. 
     Attention is now directed toward embodiments of portable devices with touch-sensitive displays.  FIG. 1A  is a block diagram illustrating portable multifunction device  100  with touch-sensitive displays  112  in accordance with some embodiments. Touch-sensitive display  112  is sometimes called a “touch screen” for convenience, and is sometimes known as or called a touch-sensitive display system. Device  100  includes memory  102  (which optionally includes one or more computer readable storage mediums), memory controller  122 , one or more processing units (CPU&#39;s)  120 , peripherals interface  118 , RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , input/output (I/O) subsystem  106 , other input or control devices  116 , and external port  124 . Device  100  optionally includes one or more optical sensors  164 . Device  100  optionally includes one or more intensity sensors  165  for detecting intensity of contacts on device  100  (e.g., a touch-sensitive surface such as touch-sensitive display system  112  of device  100 ). Device  100  optionally includes one or more tactile output generators  167  for generating tactile outputs on device  100  (e.g., generating tactile outputs on a touch-sensitive surface such as touch-sensitive display system  112  of device  100  or touchpad  355  of device  300 ). These components optionally communicate over one or more communication buses or signal lines  103 . 
     As used in the specification and claims, the term “intensity” of a contact on a touch-sensitive surface refers to the force or pressure (force per unit area) of a contact (e.g., a finger contact) on the touch sensitive surface, or to a substitute (proxy) for the force or pressure of a contact on the touch sensitive surface. The intensity of a contact has a range of values that includes at least four distinct values and more typically includes hundreds of distinct values (e.g., at least 256). Intensity of a contact is, optionally, determined (or measured) using various approaches and various sensors or combinations of sensors. For example, one or more force sensors underneath or adjacent to the touch-sensitive surface are, optionally, used to measure force at various points on the touch-sensitive surface. In some implementations, force measurements from multiple force sensors are combined (e.g., a weighted average) to determine an estimated force of a contact. Similarly, a pressure-sensitive tip of a stylus is, optionally, used to determine a pressure of the stylus on the touch-sensitive surface. Alternatively, the size of the contact area detected on the touch-sensitive surface and/or changes thereto, the capacitance of the touch-sensitive surface proximate to the contact and/or changes thereto, and/or the resistance of the touch-sensitive surface proximate to the contact and/or changes thereto are, optionally, used as a substitute for the force or pressure of the contact on the touch-sensitive surface. In some implementations, the substitute measurements for contact force or pressure are used directly to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is described in units corresponding to the substitute measurements). In some implementations, the substitute measurements for contact force or pressure are converted to an estimated force or pressure and the estimated force or pressure is used to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is a pressure threshold measured in units of pressure). 
     As used in the specification and claims, the term “tactile output” refers to physical displacement of a device relative to a previous position of the device, physical displacement of a component (e.g., a touch-sensitive surface) of a device relative to another component (e.g., housing) of the device, or displacement of the component relative to a center of mass of the device that will be detected by a user with the user&#39;s sense of touch. For example, in situations where the device or the component of the device is in contact with a surface of a user that is sensitive to touch (e.g., a finger, palm, or other part of a user&#39;s hand), the tactile output generated by the physical displacement will be interpreted by the user as a tactile sensation corresponding to a perceived change in physical characteristics of the device or the component of the device. For example, movement of a touch-sensitive surface (e.g., a touch-sensitive display or trackpad) is, optionally, interpreted by the user as a “down click” or “up click” of a physical actuator button. In some cases, a user will feel a tactile sensation such as an “down click” or “up click” even when there is no movement of a physical actuator button associated with the touch-sensitive surface that is physically pressed (e.g., displaced) by the user&#39;s movements. As another example, movement of the touch-sensitive surface is, optionally, interpreted or sensed by the user as “roughness” of the touch-sensitive surface, even when there is no change in smoothness of the touch-sensitive surface. While such interpretations of touch by a user will be subject to the individualized sensory perceptions of the user, there are many sensory perceptions of touch that are common to a large majority of users. Thus, when a tactile output is described as corresponding to a particular sensory perception of a user (e.g., an “up click,” a “down click,” “roughness”), unless otherwise stated, the generated tactile output corresponds to physical displacement of the device or a component thereof that will generate the described sensory perception for a typical (or average) user. 
     It should be appreciated that device  100  is only one example of a portable multifunction device, and that device  100  optionally has more or fewer components than shown, optionally combines two or more components, or optionally has a different configuration or arrangement of the components. The various components shown in  FIG. 1A  are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits. 
     Memory  102  optionally includes high-speed random access memory and optionally also includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Access to memory  102  by other components of device  100 , such as CPU  120  and the peripherals interface  118 , is, optionally, controlled by memory controller  122 . 
     Peripherals interface  118  can be used to couple input and output peripherals of the device to CPU  120  and memory  102 . The one or more processors  120  run or execute various software programs and/or sets of instructions stored in memory  102  to perform various functions for device  100  and to process data. 
     In some embodiments, peripherals interface  118 , CPU  120 , and memory controller  122  are, optionally, implemented on a single chip, such as chip  104 . In some other embodiments, they are, optionally, implemented on separate chips. 
     RF (radio frequency) circuitry  108  receives and sends RF signals, also called electromagnetic signals. RF circuitry  108  converts electrical signals to/from electromagnetic signals and communicates with communications networks and other communications devices via the electromagnetic signals. RF circuitry  108  optionally includes well-known circuitry for performing these functions, including but not limited to an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chipset, a subscriber identity module (SIM) card, memory, and so forth. RF circuitry  108  optionally communicates with networks, such as the Internet, also referred to as the World Wide Web (WWW), an intranet and/or a wireless network, such as a cellular telephone network, a wireless local area network (LAN) and/or a metropolitan area network (MAN), and other devices by wireless communication. The wireless communication optionally uses any of a plurality of communications standards, protocols and technologies, including but not limited to Global System for Mobile Communications (GSM), Enhanced Data GSM Environment (EDGE), high-speed downlink packet access (HSDPA), high-speed uplink packet access (HSDPA), Evolution, Data-Only (EV-DO), HSPA, HSPA+, Dual-Cell HSPA (DC-HSPDA), long term evolution (LTE), near field communication (NFC), wideband code division multiple access (W-CDMA), code division multiple access (CDMA), time division multiple access (TDMA), Bluetooth, Wireless Fidelity (Wi-Fi) (e.g., IEEE 802.11a, IEEE 802.11b, IEEE 802.11g and/or IEEE 802.11n), voice over Internet Protocol (VoIP), Wi-MAX, a protocol for e-mail (e.g., Internet message access protocol (IMAP) and/or post office protocol (POP)), instant messaging (e.g., extensible messaging and presence protocol (XMPP), Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions (SIMPLE), Instant Messaging and Presence Service (IMPS)), and/or Short Message Service (SMS), or any other suitable communication protocol, including communication protocols not yet developed as of the filing date of this document. 
     Audio circuitry  110 , speaker  111 , and microphone  113  provide an audio interface between a user and device  100 . Audio circuitry  110  receives audio data from peripherals interface  118 , converts the audio data to an electrical signal, and transmits the electrical signal to speaker  111 . Speaker  111  converts the electrical signal to human-audible sound waves. Audio circuitry  110  also receives electrical signals converted by microphone  113  from sound waves. Audio circuitry  110  converts the electrical signal to audio data and transmits the audio data to peripherals interface  118  for processing. Audio data is, optionally, retrieved from and/or transmitted to memory  102  and/or RF circuitry  108  by peripherals interface  118 . In some embodiments, audio circuitry  110  also includes a headset jack (e.g.,  212 ,  FIG. 2 ). The headset jack provides an interface between audio circuitry  110  and removable audio input/output peripherals, such as output-only headphones or a headset with both output (e.g., a headphone for one or both ears) and input (e.g., a microphone). 
     I/O subsystem  106  couples input/output peripherals on device  100 , such as touch screen  112  and other input control devices  116 , to peripherals interface  118 . I/O subsystem  106  optionally includes display controller  156 , optical sensor controller  158 , intensity sensor controller  159 , haptic feedback controller  161  and one or more input controllers  160  for other input or control devices. The one or more input controllers  160  receive/send electrical signals from/to other input or control devices  116 . The other input control devices  116  optionally include physical buttons (e.g., push buttons, rocker buttons, etc.), dials, slider switches, joysticks, click wheels, and so forth. In some alternate embodiments, input controller(s)  160  are, optionally, coupled to any (or none) of the following: a keyboard, infrared port, USB port, and a pointer device such as a mouse. The one or more buttons (e.g.,  208 ,  FIG. 2 ) optionally include an up/down button for volume control of speaker  111  and/or microphone  113 . The one or more buttons optionally include a push button (e.g.,  206 ,  FIG. 2 ). 
     Touch-sensitive display  112  provides an input interface and an output interface between the device and a user. Display controller  156  receives and/or sends electrical signals from/to touch screen  112 . Touch screen  112  displays visual output to the user. The visual output optionally includes graphics, text, icons, video, and any combination thereof (collectively termed “graphics”). In some embodiments, some or all of the visual output corresponds to user-interface objects. 
     Touch screen  112  has a touch-sensitive surface, sensor or set of sensors that accepts input from the user based on haptic and/or tactile contact. Touch screen  112  and display controller  156  (along with any associated modules and/or sets of instructions in memory  102 ) detect contact (and any movement or breaking of the contact) on touch screen  112  and converts the detected contact into interaction with user-interface objects (e.g., one or more soft keys, icons, web pages or images) that are displayed on touch screen  112 . In an exemplary embodiment, a point of contact between touch screen  112  and the user corresponds to a finger of the user. 
     Touch screen  112  optionally uses LCD (liquid crystal display) technology, LPD (light emitting polymer display) technology, or LED (light emitting diode) technology, although other display technologies are used in other embodiments. Touch screen  112  and display controller  156  optionally detect contact and any movement or breaking thereof using any of a plurality of touch sensing technologies now known or later developed, including but not limited to capacitive, resistive, infrared, and surface acoustic wave technologies, as well as other proximity sensor arrays or other elements for determining one or more points of contact with touch screen  112 . In an exemplary embodiment, projected mutual capacitance sensing technology is used, such as that found in the iPhone®, iPod Touch®, and iPad® from Apple Inc. of Cupertino, Calif. 
     Touch screen  112  optionally has a video resolution in excess of 100 dpi. In some embodiments, the touch screen has a video resolution of approximately 160 dpi. The user optionally makes contact with touch screen  112  using any suitable object or appendage, such as a stylus, a finger, and so forth. In some embodiments, the user interface is designed to work primarily with finger-based contacts and gestures, which can be less precise than stylus-based input due to the larger area of contact of a finger on the touch screen. In some embodiments, the device translates the rough finger-based input into a precise pointer/cursor position or command for performing the actions desired by the user. 
     In some embodiments, in addition to the touch screen, device  100  optionally includes a touchpad (not shown) for activating or deactivating particular functions. In some embodiments, the touchpad is a touch-sensitive area of the device that, unlike the touch screen, does not display visual output. The touchpad is, optionally, a touch-sensitive surface that is separate from touch screen  112  or an extension of the touch-sensitive surface formed by the touch screen. 
     Device  100  also includes power system  162  for powering the various components. Power system  162  optionally includes a power management system, one or more power sources (e.g., battery, alternating current (AC)), a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator (e.g., a light-emitting diode (LED)) and any other components associated with the generation, management and distribution of power in portable devices. 
     Device  100  optionally also includes one or more optical sensors  164 .  FIG. 1A  shows an optical sensor coupled to optical sensor controller  158  in I/O subsystem  106 . Optical sensor  164  optionally includes charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) phototransistors. Optical sensor  164  receives light from the environment, projected through one or more lens, and converts the light to data representing an image. In conjunction with imaging module  143  (also called a camera module), optical sensor  164  optionally captures still images or video. In some embodiments, an optical sensor is located on the back of device  100 , opposite touch screen display  112  on the front of the device, so that the touch screen display is enabled for use as a viewfinder for still and/or video image acquisition. In some embodiments, another optical sensor is located on the front of the device so that the user&#39;s image is, optionally, obtained for videoconferencing while the user views the other video conference participants on the touch screen display. 
     Device  100  optionally also includes one or more contact intensity sensors  165 .  FIG. 1A  shows a contact intensity sensor coupled to intensity sensor controller  159  in I/O subsystem  106 . Contact intensity sensor  165  optionally includes one or more piezoresistive strain gauges, capacitive force sensors, electric force sensors, piezoelectric force sensors, optical force sensors, capacitive touch-sensitive surfaces, or other intensity sensors (e.g., sensors used to measure the force (or pressure) of a contact on a touch-sensitive surface). Contact intensity sensor  165  receives contact intensity information (e.g., pressure information or a proxy for pressure information) from the environment. In some embodiments, at least one contact intensity sensor is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ). In some embodiments, at least one contact intensity sensor is located on the back of device  100 , opposite touch screen display  112  which is located on the front of device  100 . 
     Device  100  optionally also includes one or more proximity sensors  166 .  FIG. 1A  shows proximity sensor  166  coupled to peripherals interface  118 . Alternately, proximity sensor  166  is coupled to input controller  160  in I/O subsystem  106 . In some embodiments, the proximity sensor turns off and disables touch screen  112  when the multifunction device is placed near the user&#39;s ear (e.g., when the user is making a phone call). 
     Device  100  optionally also includes one or more tactile output generators  167 .  FIG. 1A  shows a tactile output generator coupled to haptic feedback controller  161  in I/O subsystem  106 . Tactile output generator  167  optionally includes one or more electroacoustic devices such as speakers or other audio components and/or electromechanical devices that convert energy into linear motion such as a motor, solenoid, electroactive polymer, piezoelectric actuator, electrostatic actuator, or other tactile output generating component (e.g., a component that converts electrical signals into tactile outputs on the device). Contact intensity sensor  165  receives tactile feedback generation instructions from haptic feedback module  133  and generates tactile outputs on device  100  that are capable of being sensed by a user of device  100 . In some embodiments, at least one tactile output generator is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ) and, optionally, generates a tactile output by moving the touch-sensitive surface vertically (e.g., in/out of a surface of device  100 ) or laterally (e.g., back and forth in the same plane as a surface of device  100 ). In some embodiments, at least one tactile output generator sensor is located on the back of device  100 , opposite touch screen display  112  which is located on the front of device  100 . 
     Device  100  optionally also includes one or more accelerometers  168 .  FIG. 1A  shows accelerometer  168  coupled to peripherals interface  118 . Alternately, accelerometer  168  is, optionally, coupled to an input controller  160  in I/O subsystem  106 . In some embodiments, information is displayed on the touch screen display in a portrait view or a landscape view based on an analysis of data received from the one or more accelerometers. Device  100  optionally includes, in addition to accelerometer(s)  168 , a magnetometer (not shown) and a GPS (or GLONASS or other global navigation system) receiver (not shown) for obtaining information concerning the location and orientation (e.g., portrait or landscape) of device  100 . 
     In some embodiments, the software components stored in memory  102  include operating system  126 , communication module (or set of instructions)  128 , contact/motion module (or set of instructions)  130 , graphics module (or set of instructions)  132 , text input module (or set of instructions)  134 , Global Positioning System (GPS) module (or set of instructions)  135 , and applications (or sets of instructions)  136 . Furthermore, in some embodiments memory  102  stores device/global internal state  157 , as shown in  FIGS. 1A and 3 . Device/global internal state  157  includes one or more of: active application state, indicating which applications, if any, are currently active; display state, indicating what applications, views or other information occupy various regions of touch screen display  112 ; sensor state, including information obtained from the device&#39;s various sensors and input control devices  116 ; and location information concerning the device&#39;s location and/or attitude. 
     Operating system  126  (e.g., Darwin, RTXC, LINUX, UNIX, OS X, WINDOWS, or an embedded operating system such as VxWorks) includes various software components and/or drivers for controlling and managing general system tasks (e.g., memory management, storage device control, power management, etc.) and facilitates communication between various hardware and software components. 
     Communication module  128  facilitates communication with other devices over one or more external ports  124  and also includes various software components for handling data received by RF circuitry  108  and/or external port  124 . External port  124  (e.g., Universal Serial Bus (USB), FIREWIRE, etc.) is adapted for coupling directly to other devices or indirectly over a network (e.g., the Internet, wireless LAN, etc.). In some embodiments, the external port is a multi-pin (e.g., 30-pin) connector that is the same as, or similar to and/or compatible with the 30-pin connector used on iPod (trademark of Apple Inc.) devices. In some embodiments, the external port is a multi-pin (e.g., 8-pin) connector that is the same as, or similar to and/or compatible with the 8-pin connector (e.g., Lightning connector) used on iPhone and iPod (trademark of Apple Inc.) devices. 
     Contact/motion module  130  optionally detects contact with touch screen  112  (in conjunction with display controller  156 ) and other touch sensitive devices (e.g., a touchpad or physical click wheel). Contact/motion module  130  includes various software components for performing various operations related to detection of contact, such as determining if contact has occurred (e.g., detecting a finger-down event), determining an intensity of the contact (e.g., the force or pressure of the contact or a substitute for the force or pressure of the contact), determining if there is movement of the contact and tracking the movement across the touch-sensitive surface (e.g., detecting one or more finger-dragging events), and determining if the contact has ceased (e.g., detecting a finger-up event or a break in contact). Contact/motion module  130  receives contact data from the touch-sensitive surface. Determining movement of the point of contact, which is represented by a series of contact data, optionally includes determining speed (magnitude), velocity (magnitude and direction), and/or an acceleration (a change in magnitude and/or direction) of the point of contact. These operations are, optionally, applied to single contacts (e.g., one finger contacts) or to multiple simultaneous contacts (e.g., “multitouch”/multiple finger contacts). In some embodiments, contact/motion module  130  and display controller  156  detect contact on a touchpad. 
     In some embodiments, contact/motion module  130  uses a set of one or more intensity thresholds to determine whether an operation has been performed by a user (e.g., to determine whether a user has “clicked” on an icon). In some embodiments at least a subset of the intensity thresholds are determined in accordance with software parameters (e.g., the intensity thresholds are not determined by the activation thresholds of particular physical actuators and can be adjusted without changing the physical hardware of device  100 ). For example, a mouse “click” threshold of a trackpad or touch screen display can be set to any of a large range of predefined thresholds values without changing the trackpad or touch screen display hardware. Additionally, in some implementations a user of the device is provided with software settings for adjusting one or more of the set of intensity thresholds (e.g., by adjusting individual intensity thresholds and/or by adjusting a plurality of intensity thresholds at once with a system-level click “intensity” parameter). 
     Contact/motion module  130  optionally detects a gesture input by a user. Different gestures on the touch-sensitive surface have different contact patterns (e.g., different motions, timings, and/or intensities of detected contacts). Thus, a gesture is, optionally, detected by detecting a particular contact pattern. For example, detecting a finger tap gesture includes detecting a finger-down event followed by detecting a finger-up (lift off) event at the same position (or substantially the same position) as the finger-down event (e.g., at the position of an icon). As another example, detecting a finger swipe gesture on the touch-sensitive surface includes detecting a finger-down event followed by detecting one or more finger-dragging events, and subsequently followed by detecting a finger-up (lift off) event. 
     Graphics module  132  includes various known software components for rendering and displaying graphics on touch screen  112  or other display, including components for changing the visual impact (e.g., brightness, transparency, saturation, contrast or other visual property) of graphics that are displayed. As used herein, the term “graphics” includes any object that can be displayed to a user, including without limitation text, web pages, icons (such as user-interface objects including soft keys), digital images, videos, animations and the like. 
     In some embodiments, graphics module  132  stores data representing graphics to be used. Each graphic is, optionally, assigned a corresponding code. Graphics module  132  receives, from applications etc., one or more codes specifying graphics to be displayed along with, if necessary, coordinate data and other graphic property data, and then generates screen image data to output to display controller  156 . 
     Haptic feedback module  133  includes various software components for generating instructions used by tactile output generator(s)  167  to produce tactile outputs at one or more locations on device  100  in response to user interactions with device  100 . 
     Text input module  134 , which is, optionally, a component of graphics module  132 , provides soft keyboards for entering text in various applications (e.g., contacts  137 , e-mail  140 , IM  141 , browser  147 , and any other application that needs text input). 
     GPS module  135  determines the location of the device and provides this information for use in various applications (e.g., to telephone  138  for use in location-based dialing, to camera  143  as picture/video metadata, and to applications that provide location-based services such as weather widgets, local yellow page widgets, and map/navigation widgets). 
     Applications  136  optionally include the following modules (or sets of instructions), or a subset or superset thereof:
         contacts module  137  (sometimes called an address book or contact list);   telephone module  138 ;   video conferencing module  139 ;   e-mail client module  140 ;   instant messaging (IM) module  141 ;   workout support module  142 ;   camera module  143  for still and/or video images;   image management module  144 ;   browser module  147 ;   calendar module  148 ;   widget modules  149 , which optionally include one or more of: weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , dictionary widget  149 - 5 , and other widgets obtained by the user, as well as user-created widgets  149 - 6 ;   digital personal assistant module  150 ;   vehicle integration module  151 ;   video and music player module  152 , which is, optionally, made up of a video player module and a music player module;   notes module  153 ;   map module  154 ; and/or   online video module  155 .       

     Examples of other applications  136  that are, optionally, stored in memory  102  include other word processing applications, other image editing applications, drawing applications, presentation applications, JAVA-enabled applications, encryption, digital rights management, voice recognition, and voice replication. 
     In conjunction with touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , contacts module  137  are, optionally, used to manage an address book or contact list (e.g., stored in application internal state  192  of contacts module  137  in memory  102  or memory  370 ), including: adding name(s) to the address book; deleting name(s) from the address book; associating telephone number(s), e-mail address(es), physical address(es) or other information with a name; associating an image with a name; categorizing and sorting names; providing telephone numbers or e-mail addresses to initiate and/or facilitate communications by telephone  138 , video conference  139 , e-mail  140 , or IM  141 ; and so forth. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , telephone module  138  are, optionally, used to enter a sequence of characters corresponding to a telephone number, access one or more telephone numbers in address book  137 , modify a telephone number that has been entered, dial a respective telephone number, conduct a conversation and disconnect or hang up when the conversation is completed. As noted above, the wireless communication optionally uses any of a plurality of communications standards, protocols and technologies. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , optical sensor  164 , optical sensor controller  158 , contact module  130 , graphics module  132 , text input module  134 , contact list  137 , and telephone module  138 , videoconferencing module  139  includes executable instructions to initiate, conduct, and terminate a video conference between a user and one or more other participants in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , e-mail client module  140  includes executable instructions to create, send, receive, and manage e-mail in response to user instructions. In conjunction with image management module  144 , e-mail client module  140  makes it very easy to create and send e-mails with still or video images taken with camera module  143 . 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , the instant messaging module  141  includes executable instructions to enter a sequence of characters corresponding to an instant message, to modify previously entered characters, to transmit a respective instant message (e.g., using a Short Message Service (SMS) or Multimedia Message Service (MMS) protocol for telephony-based instant messages or using XMPP, SIMPLE, or IMPS for Internet-based instant messages), to receive instant messages and to view received instant messages. In some embodiments, transmitted and/or received instant messages optionally include graphics, photos, audio files, video files and/or other attachments as are supported in a MMS and/or an Enhanced Messaging Service (EMS). As used herein, “instant messaging” refers to both telephony-based messages (e.g., messages sent using SMS or MMS) and Internet-based messages (e.g., messages sent using XMPP, SIMPLE, or IMPS). 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , text input module  134 , GPS module  135 , map module  154 , and music player module  146 , workout support module  142  includes executable instructions to create workouts (e.g., with time, distance, and/or calorie burning goals); communicate with workout sensors (sports devices); receive workout sensor data; calibrate sensors used to monitor a workout; select and play music for a workout; and display, store and transmit workout data. 
     In conjunction with touch screen  112 , display controller  156 , optical sensor(s)  164 , optical sensor controller  158 , contact module  130 , graphics module  132 , and image management module  144 , camera module  143  includes executable instructions to capture still images or video (including a video stream) and store them into memory  102 , modify characteristics of a still image or video, or delete a still image or video from memory  102 . 
     In conjunction with touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , text input module  134 , and camera module  143 , image management module  144  includes executable instructions to arrange, modify (e.g., edit), or otherwise manipulate, label, delete, present (e.g., in a digital slide show or album), and store still and/or video images. 
     In conjunction with RF circuitry  108 , touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , and text input module  134 , browser module  147  includes executable instructions to browse the Internet in accordance with user instructions, including searching, linking to, receiving, and displaying web pages or portions thereof, as well as attachments and other files linked to web pages. 
     In conjunction with RF circuitry  108 , touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , text input module  134 , e-mail client module  140 , and browser module  147 , calendar module  148  includes executable instructions to create, display, modify, and store calendars and data associated with calendars (e.g., calendar entries, to do lists, etc.) in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , text input module  134 , and browser module  147 , widget modules  149  are mini-applications that are, optionally, downloaded and used by a user (e.g., weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , and dictionary widget  149 - 5 ) or created by the user (e.g., user-created widget  149 - 6 ). In some embodiments, a widget includes an HTML (Hypertext Markup Language) file, a CSS (Cascading Style Sheets) file, and a JavaScript file. In some embodiments, a widget includes an XML (Extensible Markup Language) file and a JavaScript file (e.g., Yahoo!© Widgets). 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , digital personal assistant module  150  records voice commands and sends information representative of the recorded voice commands to a server such as server  510  in  FIG. 5A  for analysis, and responds to the voice commands based on a response from the server. 
     Vehicle integration module  151  includes executable instructions for one or more intermediation processes that control a vehicle information display system in a vehicle (e.g., a car, a truck, a van, etc.) that provides a user interface on a respective display of the vehicle information display system (e.g., display  546  of external information presentation system  540  in  FIG. 5A ), such as for a mapping application or a music application. The vehicle integration application converts information from third-party applications into content for display by the vehicle integration application on the respective display of the vehicle information display system. 
     In conjunction with touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , and browser module  147 , video and music player module  152  includes executable instructions that allow the user to download and play back recorded music and other sound files stored in one or more file formats, such as MP3 or AAC files, and executable instructions to display, present or otherwise play back videos (e.g., on touch screen  112  or on an external, connected display via external port  124 ). In some embodiments, device  100  optionally includes the functionality of an MP3 player, such as an iPod (trademark of Apple Inc.). 
     In conjunction with touch screen  112 , display controller  156 , contact module  130 , graphics module  132 , and text input module  134 , notes module  153  includes executable instructions to create and manage notes, to do lists, and the like in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , text input module  134 , GPS module  135 , and browser module  147 , map module  154  are, optionally, used to receive, display, modify, and store maps and data associated with maps (e.g., driving directions; data on stores and other points of interest at or near a particular location; and other location-based data) in accordance with user instructions. 
     In conjunction with touch screen  112 , display system controller  156 , contact module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , text input module  134 , e-mail client module  140 , and browser module  147 , online video module  155  includes instructions that allow the user to access, browse, receive (e.g., by streaming and/or download), play back (e.g., on the touch screen or on an external, connected display via external port  124 ), send an e-mail with a link to a particular online video, and otherwise manage online videos in one or more file formats, such as H.264. In some embodiments, instant messaging module  141 , rather than e-mail client module  140 , is used to send a link to a particular online video. 
     Each of the above identified modules and applications correspond to a set of executable instructions for performing one or more functions described above and the methods described in this application (e.g., the computer-implemented methods and other information processing methods described herein). These modules (i.e., sets of instructions) need not be implemented as separate software programs, procedures or modules, and thus various subsets of these modules are, optionally, combined or otherwise re-arranged in various embodiments. In some embodiments, memory  102  optionally stores a subset of the modules and data structures identified above. Furthermore, memory  102  optionally stores additional modules and data structures not described above. 
     In some embodiments, device  100  is a device where operation of a predefined set of functions on the device is performed exclusively through a touch screen and/or a touchpad. By using a touch screen and/or a touchpad as the primary input control device for operation of device  100 , the number of physical input control devices (such as push buttons, dials, and the like) on device  100  is, optionally, reduced. 
     The predefined set of functions that are performed exclusively through a touch screen and/or a touchpad optionally include navigation between user interfaces. In some embodiments, the touchpad, when touched by the user, navigates device  100  to a main, home, or root menu from any user interface that is displayed on device  100 . In such embodiments, a “menu button” is implemented using a touchpad. In some other embodiments, the menu button is a physical push button or other physical input control device instead of a touchpad. 
       FIG. 1B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. In some embodiments, memory  102  (in  FIG. 1A ) or  370  ( FIG. 3 ) includes event sorter  170  (e.g., in operating system  126 ) and a respective application  136 - 1  (e.g., any of the aforementioned applications  137 - 13 ,  155 ,  380 - 390 ). 
     Event sorter  170  receives event information and determines the application  136 - 1  and application view  191  of application  136 - 1  to which to deliver the event information. Event sorter  170  includes event monitor  171  and event dispatcher module  174 . In some embodiments, application  136 - 1  includes application internal state  192 , which indicates the current application view(s) displayed on touch sensitive display  112  when the application is active or executing. In some embodiments, device/global internal state  157  is used by event sorter  170  to determine which application(s) is (are) currently active, and application internal state  192  is used by event sorter  170  to determine application views  191  to which to deliver event information. 
     In some embodiments, application internal state  192  includes additional information, such as one or more of: resume information to be used when application  136 - 1  resumes execution, user interface state information that indicates information being displayed or that is ready for display by application  136 - 1 , a state queue for enabling the user to go back to a prior state or view of application  136 - 1 , and a redo/undo queue of previous actions taken by the user. 
     Event monitor  171  receives event information from peripherals interface  118 . Event information includes information about a sub-event (e.g., a user touch on touch-sensitive display  112 , as part of a multi-touch gesture). Peripherals interface  118  transmits information it receives from I/O subsystem  106  or a sensor, such as proximity sensor  166 , accelerometer(s)  168 , and/or microphone  113  (through audio circuitry  110 ). Information that peripherals interface  118  receives from I/O subsystem  106  includes information from touch-sensitive display  112  or a touch-sensitive surface. 
     In some embodiments, event monitor  171  sends requests to the peripherals interface  118  at predetermined intervals. In response, peripherals interface  118  transmits event information. In other embodiments, peripheral interface  118  transmits event information only when there is a significant event (e.g., receiving an input above a predetermined noise threshold and/or for more than a predetermined duration). 
     In some embodiments, event sorter  170  also includes a hit view determination module  172  and/or an active event recognizer determination module  173 . 
     Hit view determination module  172  provides software procedures for determining where a sub-event has taken place within one or more views, when touch sensitive display  112  displays more than one view. Views are made up of controls and other elements that a user can see on the display. 
     Another aspect of the user interface associated with an application is a set of views, sometimes herein called application views or user interface windows, in which information is displayed and touch-based gestures occur. The application views (of a respective application) in which a touch is detected optionally correspond to programmatic levels within a programmatic or view hierarchy of the application. For example, the lowest level view in which a touch is detected is, optionally, called the hit view, and the set of events that are recognized as proper inputs are, optionally, determined based, at least in part, on the hit view of the initial touch that begins a touch-based gesture. 
     Hit view determination module  172  receives information related to sub-events of a touch-based gesture. When an application has multiple views organized in a hierarchy, hit view determination module  172  identifies a hit view as the lowest view in the hierarchy which should handle the sub-event. In most circumstances, the hit view is the lowest level view in which an initiating sub-event occurs (i.e., the first sub-event in the sequence of sub-events that form an event or potential event). Once the hit view is identified by the hit view determination module, the hit view typically receives all sub-events related to the same touch or input source for which it was identified as the hit view. 
     Active event recognizer determination module  173  determines which view or views within a view hierarchy should receive a particular sequence of sub-events. In some embodiments, active event recognizer determination module  173  determines that only the hit view should receive a particular sequence of sub-events. In other embodiments, active event recognizer determination module  173  determines that all views that include the physic allocation of a sub-event are actively involved views, and therefore determines that all actively involved views should receive a particular sequence of sub-events. In other embodiments, even if touch sub-events were entirely confined to the area associated with one particular view, views higher in the hierarchy would still remain as actively involved views. 
     Event dispatcher module  174  dispatches the event information to an event recognizer (e.g., event recognizer  180 ). In embodiments including active event recognizer determination module  173 , event dispatcher module  174  delivers the event information to an event recognizer determined by active event recognizer determination module  173 . In some embodiments, event dispatcher module  174  stores in an event queue the event information, which is retrieved by a respective event receiver module  182 . 
     In some embodiments, operating system  126  includes event sorter  170 . Alternatively, application  136 - 1  includes event sorter  170 . In yet other embodiments, event sorter  170  is a stand-alone module, or a part of another module stored in memory  102 , such as contact/motion module  130 . 
     In some embodiments, application  136 - 1  includes a plurality of event handlers  190  and one or more application views  191 , each of which includes instructions for handling touch events that occur within a respective view of the application&#39;s user interface. Each application view  191  of the application  136 - 1  includes one or more event recognizers  180 . Typically, a respective application view  191  includes a plurality of event recognizers  180 . In other embodiments, one or more of event recognizers  180  are part of a separate module, such as a user interface kit (not shown) or a higher level object from which application  136 - 1  inherits methods and other properties. In some embodiments, a respective event handler  190  includes one or more of: data updater  176 , object updater  177 , GUI updater  178 , and/or event data  179  received from event sorter  170 . Event handler  190  optionally utilizes or calls data updater  176 , object updater  177  or GUI updater  178  to update the application internal state  192 . Alternatively, one or more of the application views  191  includes one or more respective event handlers  190 . Also, in some embodiments, one or more of data updater  176 , object updater  177 , and GUI updater  178  are included in a respective application view  191 . 
     A respective event recognizer  180  receives event information (e.g., event data  179 ) from event sorter  170 , and identifies an event from the event information. Event recognizer  180  includes event receiver  182  and event comparator  184 . In some embodiments, event recognizer  180  also includes at least a subset of: metadata  183 , and event delivery instructions  188  (which optionally include sub-event delivery instructions). 
     Event receiver  182  receives event information from event sorter  170 . The event information includes information about a sub-event, for example, a touch or a touch movement. Depending on the sub-event, the event information also includes additional information, such as location of the sub-event. When the sub-event concerns motion of a touch, the event information optionally also includes speed and direction of the sub-event. In some embodiments, events include rotation of the device from one orientation to another (e.g., from a portrait orientation to a landscape orientation, or vice versa), and the event information includes corresponding information about the current orientation (also called device attitude) of the device. 
     Event comparator  184  compares the event information to predefined event or sub event definitions and, based on the comparison, determines an event or sub-event, or determines or updates the state of an event or sub-event. In some embodiments, event comparator  184  includes event definitions  186 . Event definitions  186  contain definitions of events (e.g., predefined sequences of sub-events), for example, event  1  ( 187 - 1 ), event  2  ( 187 - 2 ), and others. In some embodiments, sub-events in an event  187  include, for example, touch begin, touch end, touch movement, touch cancellation, and multiple touching. In one example, the definition for event  1  ( 187 - 1 ) is a double tap on a displayed object. The double tap, for example, comprises a first touch (touch begin) on the displayed object for a predetermined phase, a first lift-off (touch end) for a predetermined phase, a second touch (touch begin) on the displayed object for a predetermined phase, and a second lift-off (touch end) for a predetermined phase. In another example, the definition for event  2  ( 187 - 2 ) is a dragging on a displayed object. The dragging, for example, comprises a touch (or contact) on the displayed object for a predetermined phase, a movement of the touch across touch-sensitive display  112 , and lift-off of the touch (touch end). In some embodiments, the event also includes information for one or more associated event handlers  190 . 
     In some embodiments, event definition  187  includes a definition of an event for a respective user-interface object. In some embodiments, event comparator  184  performs a hit test to determine which user-interface object is associated with a sub-event. For example, in an application view in which three user-interface objects are displayed on touch-sensitive display  112 , when a touch is detected on touch-sensitive display  112 , event comparator  184  performs a hit test to determine which of the three user-interface objects is associated with the touch (sub-event). If each displayed object is associated with a respective event handler  190 , the event comparator uses the result of the hit test to determine which event handler  190  should be activated. For example, event comparator  184  selects an event handler associated with the sub-event and the object triggering the hit test. 
     In some embodiments, the definition for a respective event  187  also includes delayed actions that delay delivery of the event information until after it has been determined whether the sequence of sub-events does or does not correspond to the event recognizer&#39;s event type. 
     When a respective event recognizer  180  determines that the series of sub-events do not match any of the events in event definitions  186 , the respective event recognizer  180  enters an event impossible, event failed, or event ended state, after which it disregards subsequent sub-events of the touch-based gesture. In this situation, other event recognizers, if any, that remain active for the hit view continue to track and process sub-events of an ongoing touch-based gesture. 
     In some embodiments, a respective event recognizer  180  includes metadata  183  with configurable properties, flags, and/or lists that indicate how the event delivery system should perform sub-event delivery to actively involved event recognizers. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate how event recognizers interact, or are enabled to interact, with one another. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate whether sub-events are delivered to varying levels in the view or programmatic hierarchy. 
     In some embodiments, a respective event recognizer  180  activates event handler  190  associated with an event when one or more particular sub-events of an event are recognized. In some embodiments, a respective event recognizer  180  delivers event information associated with the event to event handler  190 . Activating an event handler  190  is distinct from sending (and deferred sending) sub-events to a respective hit view. In some embodiments, event recognizer  180  throws a flag associated with the recognized event, and event handler  190  associated with the flag catches the flag and performs a predefined process. 
     In some embodiments, event delivery instructions  188  include sub-event delivery instructions that deliver event information about a sub-event without activating an event handler. Instead, the sub-event delivery instructions deliver event information to event handlers associated with the series of sub-events or to actively involved views. Event handlers associated with the series of sub-events or with actively involved views receive the event information and perform a predetermined process. 
     In some embodiments, data updater  176  creates and updates data used in application  136 - 1 . For example, data updater  176  updates the telephone number used in contacts module  137 , or stores a video file used in video player module  145 . In some embodiments, object updater  177  creates and updates objects used in application  136 - 1 . For example, object updater  177  creates a new user-interface object or updates the position of a user-interface object. GUI updater  178  updates the GUI. For example, GUI updater  178  prepares display information and sends it to graphics module  132  for display on a touch-sensitive display. 
     In some embodiments, event handler(s)  190  includes or has access to data updater  176 , object updater  177 , and GUI updater  178 . In some embodiments, data updater  176 , object updater  177 , and GUI updater  178  are included in a single module of a respective application  136 - 1  or application view  191 . In other embodiments, they are included in two or more software modules. 
     It shall be understood that the foregoing discussion regarding event handling of user touches on touch-sensitive displays also applies to other forms of user inputs to operate multifunction devices  100  with input-devices, not all of which are initiated on touch screens. For example, mouse movement and mouse button presses, optionally coordinated with single or multiple keyboard presses or holds; contact movements such as taps, drags, scrolls, etc., on touch-pads; pen stylus inputs; movement of the device; oral instructions; detected eye movements; biometric inputs; and/or any combination thereof are optionally utilized as inputs corresponding to sub-events which define an event to be recognized. 
       FIG. 2  illustrates a portable multifunction device  100  having a touch screen  112  in accordance with some embodiments. The touch screen optionally displays one or more graphics within user interface (UI)  200 . In this embodiment, as well as others described below, a user is enabled to select one or more of the graphics by making a gesture on the graphics, for example, with one or more fingers  202  (not drawn to scale in the figure) or one or more styluses  203  (not drawn to scale in the figure). In some embodiments, selection of one or more graphics occurs when the user breaks contact with the one or more graphics. In some embodiments, the gesture optionally includes one or more taps, one or more swipes (from left to right, right to left, upward and/or downward) and/or a rolling of a finger (from right to left, left to right, upward and/or downward) that has made contact with device  100 . In some implementations or circumstances, inadvertent contact with a graphic does not select the graphic. For example, a swipe gesture that sweeps over an application icon optionally does not select the corresponding application when the gesture corresponding to selection is a tap. 
     Device  100  optionally also includes one or more physical buttons, such as “home” or menu button  204 . As described previously, menu button  204  is, optionally, used to navigate to any application  136  in a set of applications that are, optionally executed on device  100 . Alternatively, in some embodiments, the menu button is implemented as a soft key in a GUI displayed on touch screen  112 . 
     In one embodiment, device  100  includes touch screen  112 , menu button  204 , push button  206  for powering the device on/off and locking the device, volume adjustment button(s)  208 , Subscriber Identity Module (SIM) card slot  210 , head set jack  212 , and docking/charging external port  124 . Push button  206  is, optionally, used to turn the power on/off on the device by depressing the button and holding the button in the depressed state for a predefined time interval; to lock the device by depressing the button and releasing the button before the predefined time interval has elapsed; and/or to unlock the device or initiate an unlock process. In an alternative embodiment, device  100  also accepts verbal input for activation or deactivation of some functions through microphone  113 . Device  100  also, optionally, includes one or more contact intensity sensors  165  for detecting intensity of contacts on touch screen  112  and/or one or more tactile output generators  167  for generating tactile outputs for a user of device  100 . 
       FIG. 3  is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. Device  300  need not be portable. In some embodiments, device  300  is a laptop computer, a desktop computer, a tablet computer, a multimedia player device, a navigation device, an educational device (such as a child&#39;s learning toy), a gaming system, or a control device (e.g., a home or industrial controller). Device  300  typically includes one or more processing units (CPU&#39;s)  310 , one or more network or other communications interfaces  360 , memory  370 , and one or more communication buses  320  for interconnecting these components. Communication buses  320  optionally include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Device  300  includes input/output (I/O) interface  330  comprising display  340 , which is typically a touch screen display (e.g., touch screen display  112 ). I/O interface  330  also optionally includes a keyboard and/or mouse (or other pointing device)  350  and touchpad  355 , tactile output generator  357  for generating tactile outputs on device  300  (e.g., similar to tactile output generator(s)  167  described above with reference to  FIG. 1A ), sensors  359  (e.g., optical, acceleration, proximity, touch-sensitive, and/or contact intensity sensors similar to contact intensity sensor(s)  165  described above with reference to  FIG. 1A ). Memory  370  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and optionally includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  370  optionally includes one or more storage devices remotely located from CPU(s)  310 . In some embodiments, memory  370  stores programs, modules, and data structures analogous to the programs, modules, and data structures stored in memory  102  of portable multifunction device  100  ( FIG. 1A ), or a subset thereof. Furthermore, memory  370  optionally stores additional programs, modules, and data structures not present in memory  102  of portable multifunction device  100 . For example, memory  370  of device  300  optionally stores drawing module  380 , presentation module  382 , word processing module  384 , website creation module  386 , disk authoring module  388 , and/or spreadsheet module  390 , while memory  102  of portable multifunction device  100  ( FIG. 1A ) optionally does not store these modules. 
     Each of the above identified elements in  FIG. 3  are, optionally, stored in one or more of the previously mentioned memory devices. Each of the above identified modules corresponds to a set of instructions for performing a function described above. The above identified modules or programs (i.e., sets of instructions) need not be implemented as separate software programs, procedures or modules, and thus various subsets of these modules are, optionally, combined or otherwise re-arranged in various embodiments. In some embodiments, memory  370  optionally stores a subset of the modules and data structures identified above. Furthermore, memory  370  optionally stores additional modules and data structures not described above. 
     Attention is now directed towards embodiments of user interfaces (“UI”) that is, optionally, implemented on portable multifunction device  100 . 
       FIG. 4A  illustrates an exemplary user interface for a menu of applications on portable multifunction device  100  in accordance with some embodiments. Similar user interfaces are, optionally, implemented on device  300 . In some embodiments, user interface  400  includes the following elements, or a subset or superset thereof: Signal strength indicator(s)  402  for wireless communication(s), such as cellular and WiFi signals;
         Time  404 ;   Bluetooth indicator  405 ;   Battery status indicator  406 ;   Tray  408  with icons for frequently used applications, such as:
           Icon  416  for telephone module  138 , labeled “Phone,” which optionally includes an indicator  414  of the number of missed calls or voicemail messages;   Icon  418  for e-mail client module  140 , labeled “Mail,” which optionally includes an indicator  410  of the number of unread e-mails;   Icon  420  for browser module  147 , labeled “Browser”; and   Icon  422  for video and music player module  152 , also referred to as iPod (trademark of Apple Inc.) module  152 , labeled “iPod.”   
           Icons for other applications, such as:
           Icon  424  for IM module  141 , labeled “Text”;   Icon  426  for calendar module  148 , labeled “Calendar”;   Icon  428  for image management module  144 , labeled “Photos”;   Icon  430  for camera module  143 , labeled “Camera”;   Icon  432  for online video module  155 , labeled “Online Video”;   Icon  434  for stocks widget  149 - 2 , labeled “Stocks”;   Icon  436  for map module  154 , labeled “Map”;   Icon  438  for weather widget  149 - 1 , labeled “Weather”;   Icon  440  for alarm clock widget  149 - 4 , labeled “Clock”;   Icon  442  for workout support module  142 , labeled “Workout Support”;   Icon  444  for notes module  153 , labeled “Notes”; and   Icon  446  for a settings application or module, which provides access to settings for device  100  and its various applications  136 .   
               

     It should be noted that the icon labels illustrated in  FIG. 4A  are merely exemplary. For example, icon  422  for video and music player module  152  are labeled “Music” or “Music Player.” Other labels are, optionally, used for various application icons. In some embodiments, a label for a respective application icon includes a name of an application corresponding to the respective application icon. In some embodiments, a label for a particular application icon is distinct from a name of an application corresponding to the particular application icon. 
       FIG. 4B  illustrates an exemplary user interface on a device (e.g., device  300 ,  FIG. 3 ) with a touch-sensitive surface  451  (e.g., a tablet or touchpad  355 ,  FIG. 3 ) that is separate from the display  450  (e.g., touch screen display  112 ). Device  300  also, optionally, includes one or more contact intensity sensors (e.g., one or more of sensors  357 ) for detecting intensity of contacts on touch-sensitive surface  451  and/or one or more tactile output generators  359  for generating tactile outputs for a user of device  300 . 
     Although some of the examples which follow will be given with reference to inputs on touch screen display  112  (where the touch sensitive surface and the display are combined), in some embodiments, the device detects inputs on a touch-sensitive surface that is separate from the display, as shown in  FIG. 4B . In some embodiments the touch sensitive surface (e.g.,  451  in  FIG. 4B ) has a primary axis (e.g.,  452  in  FIG. 4B ) that corresponds to a primary axis (e.g.,  453  in  FIG. 4B ) on the display (e.g.,  450 ). In accordance with these embodiments, the device detects contacts (e.g.,  460  and  462  in  FIG. 4B ) with the touch-sensitive surface  451  at locations that correspond to respective locations on the display (e.g., in  FIG. 4B, 460  corresponds to  468  and  462  corresponds to  470 ). In this way, user inputs (e.g., contacts  460  and  462 , and movements thereof) detected by the device on the touch-sensitive surface (e.g.,  451  in  FIG. 4B ) are used by the device to manipulate the user interface on the display (e.g.,  450  in  FIG. 4B ) of the multifunction device when the touch-sensitive surface is separate from the display. It should be understood that similar methods are, optionally, used for other user interfaces described herein. 
     Additionally, while the following examples are given primarily with reference to finger inputs (e.g., finger contacts, finger tap gestures, finger swipe gestures), it should be understood that, in some embodiments, one or more of the finger inputs are replaced with input from another input device (e.g., a mouse based input or stylus input). For example, a swipe gesture is, optionally, replaced with a mouse click (e.g., instead of a contact) followed by movement of the cursor along the path of the swipe (e.g., instead of movement of the contact). As another example, a tap gesture is, optionally, replaced with a mouse click while the cursor is located over the location of the tap gesture (e.g., instead of detection of the contact followed by ceasing to detect the contact). Similarly, when multiple user inputs are simultaneously detected, it should be understood that multiple computer mice are, optionally, used simultaneously, or a mouse and finger contacts are, optionally, used simultaneously. 
     As used herein, the term “focus selector” refers to an input element that indicates a current part of a user interface with which a user is interacting. In some implementations that include a cursor or other location marker, the cursor acts as a “focus selector,” so that when an input (e.g., a press input) is detected on a touch-sensitive surface (e.g., touchpad  355  in  FIG. 3  or touch-sensitive surface  451  in  FIG. 4B ) while the cursor is over a particular user interface element (e.g., a button, window, slider or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations that include a touch-screen display (e.g., touch-sensitive display system  112  in  FIG. 1A  or touch screen  112  in  FIG. 4A ) that enables direct interaction with user interface elements on the touch-screen display, a detected contact on the touch-screen acts as a “focus selector,” so that when an input (e.g., a press input by the contact) is detected on the touch-screen display at a location of a particular user interface element (e.g., a button, window, slider or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations focus is moved from one region of a user interface to another region of the user interface without corresponding movement of a cursor or movement of a contact on a touch-screen display (e.g., by using a tab key or arrow keys to move focus from one button to another button); in these implementations, the focus selector moves in accordance with movement of focus between different regions of the user interface. Without regard to the specific form taken by the focus selector, the focus selector is generally the user interface element (or contact on a touch-screen display) that is controlled by the user so as to communicate the user&#39;s intended interaction with the user interface (e.g., by indicating, to the device, the element of the user interface with which the user is intending to interact). For example, the location of a focus selector (e.g., a cursor, a contact or a selection box) over a respective button while a press input is detected on the touch-sensitive surface (e.g., a touchpad or touch screen) will indicate that the user is intending to activate the respective button (as opposed to other user interface elements shown on a display of the device). 
       FIG. 5A  illustrates a block diagram of an operating environment  500  in accordance with some embodiments. Operating environment  500  includes a server  510 , one or more communications networks  505 , portable multifunction device  100 , and external information presentation system  540 . In some embodiments, external information presentation system  540  is an entertainment and/or navigation system that is implemented in a vehicle. In some embodiments, external information presentation system  540  includes one or more displays. In some embodiments, a vehicle includes a plurality of external information presentation system  540  communicatively coupled to device  100  in operating environment  500  each with a respective display. 
     Server  510  typically includes one or more processing units (CPUs)  512  for executing modules, programs and/or instructions stored in memory  524  and thereby performing processing operations, one or more network or other communications interfaces  520 , memory  524 , and one or more communication buses  522  for interconnecting these components. Communication buses  522  optionally include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Memory  524  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices, and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  524  optionally includes one or more storage devices remotely located from the CPU(s)  512 . Memory  524 , or alternately the non-volatile memory device(s) within memory  524 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  524 , or the computer readable storage medium of memory  524  stores the following programs, modules, and data structures, or a subset thereof:
         an operating system  526  that includes procedures for handling various basic system services and for performing hardware dependent tasks; and   a network communication module  528  that is used for connecting (wired or wireless) server  510  to other computing devices via the one or more communication network interfaces  520  and one or more communication networks  505 , such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on.       

     Portable multifunction device  100  (sometimes herein also called “device  100 ”) typically includes the components described with reference to  FIGS. 1A-1B and/or 3 . 
     External information presentation system  540  (sometimes herein also called “system  540 ”) typically includes one or more processing units (CPUs)  542  for executing modules, programs and/or instructions stored in memory  554  and thereby performing processing operations, one or more network or other communications interfaces  550 , memory  554 , and one or more communication buses  552  for interconnecting these components. External information presentation system  540 , optionally, includes a user interface  544  comprising one or more display devices  546  and a plurality of controls  548  (e.g., jog dials, knobs, buttons, switches, a touch-sensitive surface such as a touch screen display, or other input sources). In some embodiments, the one or more displays  546  include a primary display  546 - 1  (e.g., a dashboard or vehicle navigation display) and an auxiliary display  546 - 2  (e.g., a rear-seat or entertainment display). In some embodiments, a respective display of the one or more displays  546  is a touch screen display that is capable of receiving user touch inputs (e.g., detecting finger contacts and gestures that correspond to the detection and movement of finger contacts). In some embodiments, a respective display of the one or more displays  546  is associated with one or more controls of the plurality of controls  548  (e.g., jog dials, knobs, buttons, switches, a touch-sensitive surface such as a touch screen display, or other input sources). Communication buses  552  optionally include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Memory  554  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices, and, optionally, includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  554  optionally includes one or more storage devices remotely located from the CPU(s)  542 . Memory  552 , or alternately the non-volatile memory device(s) within memory  552 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  552 , or the computer readable storage medium of memory  552  stores the following programs, modules, and data structures, or a subset thereof:
         an operating system  556  that includes procedures for handling various basic system services and for performing hardware dependent tasks; and   a network communication module  558  that is used for connecting (wired or wireless) server  540  to other computing devices via the one or more communication network interfaces  550  and one or more communication networks  505 , such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on.       

     In some embodiments, device  100  drives the one or more displays  546  of system  540 . For example, device  100  sends a video signal to system  540 , and CPU  542  of system  540  renders the video signal on the one or more displays  546 . In some embodiments, device  100  sends a video signal directly to the one or more displays  546  and CPU  542  is not used to render the video signal (e.g., device  100  uses display  546  as an auxiliary display). In some embodiments, the user interface displayed on touch screen  112  of device  100  is synchronized with the user interface displayed on the one or more displays  546  of system  540 , and, in some other embodiments, the user interface displayed on touch screen  112  of device  100  is not continuously synchronized with the user interface displayed on the one or more displays  546  of system  540  and at times (e.g., while a user of device  100  is viewing information about possible driving destinations but has not yet selected a driving destination) touchscreen  112  of device  100  displays different information from that displayed on display  546  of system  540  (e.g., touch screen  112  and display  546  are intermittently synchronized with periods in between the intermittent synchronization events where they are not synchronized). 
     In some embodiments, in response to detecting a user input (e.g., a user touch input associated with a respective display of the one or more displays  546  or a user input associated with a respective control of the plurality of controls  548 ), system  540  (or the respective display of the one or more displays  546 , or the respective control of the plurality of controls  548 ) sends input information (e.g., an identifier for the input source and an input description describing the user input) corresponding to the user input to device  100 . In turn, device  100  updates the user interface displayed on the respective display of the one or more displays  546  and/or touch screen  112  of device  100  in accordance with the received input information and/or the display state of the user interface displayed on the respective display of the one or more displays  546  at or before the user input. 
       FIG. 5B  is a flow diagram illustrating a process of selecting an affected display and sending update information to the affected display. The affected display (e.g., primary display  546 - 1 ) displays ( 560 ) a user interface. A respective input source (e.g., jog dial  675  shown in  FIGS. 6W-6FF ) that is a control of system  540  detects ( 561 ) a user input (e.g., rotation of jog dial  675 ). In some embodiments, the respective input source is one of controls  548  and the user input is an interaction with one of controls  548 . For example, controls  548  include buttons, switches, dials, knobs, other mechanical affordances, touch-sensitive surfaces, or other input sources. For example, the user input is rotation of a knob or dial, depression of an affordance or knob, a touch input detected on a touch-sensitive surface or touch screen, or other user interaction with controls  548 . 
     In response to detecting the user input, the respective input source sends ( 562 ) input information (e.g., {Source ID; Input Description}) to device  100 . In some embodiments, the input information includes a unique identifier for the input source and input description information that describes the user input. For example, the input description information is raw input data such as the magnitude and direction of rotation of a jog dial, contact locations and movement amounts/directions detected on a touch-sensitive surface and/or gesture data describing a type of gesture that was performed on the touch-sensitive surface. 
     Device  100  receives ( 564 ) the input information from the respective input source. Device  100  selects an affected display by correlating the unique identifier (e.g., source ID) included in the input information with a display identifier tag (e.g., a display ID) based at least in part on input-source mapping  566 . In some embodiments, the input-source mapping  566  is stored in memory of device  100 . For example, device  100  associates rotation of jog dial  675  with a first display (e.g., display  546 - 1  in  FIGS. 6W-6CC ) based on input-source mapping  566  when jog dial  675  is associated with the first display. Alternatively, when jog dial  675  is associated with a second display (e.g., display  546 - 2  in  FIGS. 6DD-6FF ), device  100  associates rotation of jog dial  675  with the second display. In some embodiments, multiple inputs sources are mapped to a same display. However, in some embodiments, each input source is mapped no more than a single display. In some embodiments, input-source mapping  566  is updated by device  100  in response to detecting input-source-mapping update events (e.g., a vehicle associated with the first display starting to back up and taking control of the first display, or an input associating a jog dial with the second display instead of the first display) and/or in accordance with a predetermined schedule. 
     After selecting the affected display, device  100  determines a respective state of the user interface displayed on the affected display by correlating the display ID (determined based on input-source mapping  566 ) for the affected display with display state information (e.g., what kind of user interface is displayed in the display, what user interface elements are displayed, and/or which controls are associated with which functions such as volume control or scrolling) based at least in part on user interface state table  568 . In some embodiments, the user interface state table  568  is stored in memory of device  100 . After determining the respective state of the user interface displayed on the affected display, device  100  generates ( 570 ) an updated user interface for the affected display in accordance with the respective state of the user interface displayed on the affected display and the input description information, and device  100  sends the updated user interface (or information for generating an updated user interface) to the affected display. In some embodiments, device  100  also updates user interface state table  568  so that the state information associated with the display ID corresponding to the affected display reflects the updated user interface (e.g., for use in responding to subsequent input information received from the input source). 
     In response to receiving the updated user interface (e.g., update information) from device  100 , the affected display updates ( 574 ), the user interface displayed on the affected displayed so as to display the updated user interface (e.g., by replacing an image of a user interface previously provided by device  100  with an updated image of the user interface provided by device  100  in the update information). 
     User Interfaces and Associated Processes 
     Attention is now directed towards embodiments of user interfaces (“UI”) and associated processes that may be implemented on an electronic device with a display and a touch-sensitive surface, such as device  300  or portable multifunction device  100 . 
       FIGS. 6A-6V  illustrate exemplary user interfaces for synchronizing two or more displays in accordance with some embodiments. The user interfaces in these figures are used to illustrate the processes described below, including the processes in  FIGS. 7A-7D and 8A-8B . 
       FIG. 6A  illustrates user interface  602  displayed on touch screen  112  of portable multifunction device  100  (sometimes herein also called “device  100 ”). User interface  602  includes a plurality of user interface objects (e.g., application icons  424 ,  426 ,  428 ,  430 ,  434 ,  436 ,  438 ,  446 ,  416 ,  418 ,  420 , and  422 ).  FIG. 6A  also illustrates detecting user touch input  606  over the maps application icon  436  on touch screen  112 . 
       FIG. 6A  further illustrates user interface  604  displayed on display  546 - 1  of external information presentation system  540  (sometimes herein also called “system  540 ”). In some embodiments, system  540  is included in a vehicle (e.g., in the dashboard or steering wheel of the vehicle). In some embodiments, display  546 - 1  is a primary display of a plurality of displays associated with system  540 . In some embodiments, display  546 - 1  is implemented in the dashboard of the vehicle and is visually accessible to the driver and/or passenger of the vehicle. In some embodiments, display  546 - 1  is a touch screen display configured to detect one or more user touch inputs.  FIG. 6A  illustrates display  546 - 1  displaying a plurality of climate controls in user interface  604  including the outside temperature (e.g., 82°), the temperature in the driver&#39;s zone of the vehicle (e.g., 70°), the temperature in the passenger&#39;s zone of the vehicle (e.g., 75°), the fan intensity in the driver&#39;s zone of the vehicle (e.g., 2 on a 0-10 scale), and the fan intensity in the passenger&#39;s zone of the vehicle (e.g., 5 on a 0-10 scale).  FIG. 6A  also illustrates display  546 - 1  displaying a plurality of user interface objects (sometimes herein called “affordances” or “selectable user interface objects”) enabled to adjust the temperature in a respective zone of the vehicle (e.g., affordances  603   a ,  603   b ,  603   c , and  603   d ), a plurality of user interface objects enabled to adjust the fan intensity in a respective zone of the vehicle (e.g., affordances  603   e ,  603   f ,  603   g , and  603   h ), and a plurality of user interface objects enabled to adjust other vehicle climate control settings (e.g., affordances  605   a  related to air conditioning,  605   b  related to windshield defrost,  605   c  related to rear window defrost, and  605   d  related to automatic climate control).  FIG. 6A  further illustrates a plurality of mechanical affordances configured to control the volume of the sound system of the vehicle or to scroll one or more user interface objects on display  546 - 1  (e.g., knob or jog dial  607   c ), and the radio tuner of the vehicle (e.g., affordances  607   a ,  607   b ,  607   d , and  607   e ). 
       FIG. 6B  illustrates touch screen  112  displaying current location  608  of device  100  in a map application in user interface  602  of touch screen  112  in response to detecting user touch input  606  over the maps application icon  436  in  FIG. 6A . In some embodiments detecting a user touch input over a respective affordance corresponds to detecting a tap gesture on the respective affordance, where the tap gesture includes detecting a contact at a location that corresponds to the respective affordance and detecting liftoff of the contact within a predetermined time period (e.g., 0.05, 0.1, 0.2, 03, 0.4 or 0.5 seconds). In some embodiments, the map displayed in user interface  602  is not to scale.  FIG. 6B  also illustrates detecting user touch input  610  over search box  609  on touch screen  112 . 
       FIG. 6B  further illustrates displaying, on display  546 - 1 , a current location  608  of device  100  in a map displayed in user interface  604  in response to detecting user touch input  606  over the maps application icon  436  in  FIG. 6A . In some embodiments, the map displayed in user interface  604  is not to scale. Affordance  612 , also displayed in user interface  604 , when activated, causes the device to invoke a digital assistant (e.g., Siri from Apple Inc. of Cupertino, Calif.).  FIG. 6B  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being north). In some implementations, the font size of information displayed in user interface  604  of display  546 - 1  is larger than the font size of information displayed in user interface  602  of touch screen  112 . For example, when system  540  is located in a vehicle, the text on display  546 - 1  is generated so as to be larger than on touch screen  112  of device  100  to enable greater readability while the driver and passenger(s) of the vehicle are at arm&#39;s length of display  546 - 1 . 
       FIG. 6C  illustrates displaying a user search query (e.g., dry cleaning) input in search box  609  of user interface  602 . In one example, the user manually inputs the search query with a virtual keyboard in user interface  602  of device  100 . In another example, the search query is a speech input received from the user of device  100 .  FIG. 6C  further illustrates maintaining display of user interface  604  from  FIG. 6B  on display  546 - 1 . 
       FIG. 6D  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a  and  614   b  nearby current location  608  of device  100  in user interface  602  in response to input of the search query in  FIG. 6C . In some embodiments, a search result (or establishment) matching the user&#39;s search query is automatically selected (e.g., ABC Cleaners) based on proximity, the establishment&#39;s ratings, the amount of reviews, the amount of times the user has frequented the establishment, and/or other factors. In  FIG. 6D , information box  613  corresponding to automatically selected dry cleaner represented by pin  614   a  is also displayed in user interface  602 . Information box  613  includes the dry cleaning establishment&#39;s name (e.g., ABC Cleaners), the rating of the establishment (e.g., 3 out of 5 stars), the amount of user reviews for the establishment (e.g.,  100  reviews), and affordance  613   a  configured to display additional information corresponding to the establishment. In some embodiments, information box  613 , when activated, causes the device to display additional information corresponding to the establishment in response to a user touch input anywhere in information box  613 . In some other embodiments, information box  613 , when activated, causes the device to display additional information corresponding to the establishment in response to a user touch input over affordance  613   a .  FIG. 6D  also illustrates detecting user touch input  615  over affordance  613   a  on touch screen  112 . 
       FIG. 6D  further illustrates displaying suggested route  616  from current location  608  of device  100  to the automatically selected search result (e.g., dry cleaner represented by pin  614   a  corresponding to ABC cleaners) in user interface  604  in response to input of the search query in  FIG. 6C . In  FIG. 6D , user interface  604  includes route  616 , turn-by-turn directions box  617  indicating the user&#39;s first direction (or turn) on route  616  and the name of the destination (e.g., ABC Cleaners), and “start directions” affordance  618  configured to initiate a turn-by-turn direction mode in which the device would provide turn-by-turn directions to ABC Cleaners using visual and/or spoken prompts.  FIG. 6D  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being south, so that the direction that the vehicle is instructed to drive in the turn-by-turn directions is oriented toward a top of display  546 - 1 ). 
       FIG. 6E  illustrates displaying additional information corresponding to ABC Cleaners in user interface  602  in response to detecting user touch input  615  over affordance  613   a  in  FIG. 6D . In  FIG. 6E , user interface  602  includes information identifying the hours of operation of ABC Cleaners, the home page (or website) for ABC Cleaners, the phone number for ABC Cleaners, and the address for ABC Cleaners. In  FIG. 6E , user interface  602  also includes affordance  619  configured to display directions from the device&#39;s current location to ABC Cleaners and affordance  620  configured to display directions from ABC Cleaners to the device&#39;s current location.  FIG. 6E  also illustrates detecting user touch input  621  over affordance  619  on touch screen  112 .  FIG. 6E  further illustrates maintaining display of user interface  604  from  FIG. 6D  on display  546 - 1 . 
       FIG. 6F  illustrates displaying an interface in user interface  602  for inputting a start point and an end point for a route in response to detecting user touch input  621  over affordance  619  on touch screen  112  in  FIG. 6E . In  FIG. 6F , user interface  602  includes the address of the start point of the route in box  622   a  (e.g., the current location of device  100 ) and the address of the end point of the route in box  622   b  (e.g., ABC Cleaners, 1660 40th Avenue, San Francisco, Calif.). In  FIG. 6F , box  622   a  and/or box  622   b  are enabled to be edited with virtual keyboard  624  displayed in user interface  602  or, alternatively, with a speech input. Affordance  622   c , when activated, causes the device to replace the location entered in box  622   a  with the location in box  622   b  and to replace the location entered in box  622   b  with the location in box  622   a . In  FIG. 6F , user interface  602  includes selectable routes  623  from device  100 &#39;s current location to previously entered destinations. In  FIG. 6F , user interface  602  further includes affordances  627   a ,  627   b , and  627   c  configured to select different modes of transportation for route calculation. For example, in  FIG. 6F , the “walk” mode of transportation is currently selected as shown by the highlighted frame around affordance  627   b .  FIG. 6F  also illustrates displaying a “route” affordance  626   a  configured to calculate one or more routes from the start point in box  622   a  to the end point in box  622   b  and a “cancel” affordance  626   b  configured to clear the locations entered in boxes  622   a  and  622   b  or to redisplay user interface  602  displayed in  FIG. 6D .  FIG. 6F  further illustrates detecting user touch input  628  over “route” affordance  626   a  on touch screen  112 .  FIG. 6F  further illustrates maintaining display of user interface  604  from  FIG. 6D  on display  546 - 1 . 
       FIG. 6G  illustrates displaying two suggested routes from current location  608  of device  100  to the dry cleaner represented by pin  614   a  in user interface  602  in response to detecting user touch input  628  over “route” affordance  626   a  on touch screen  112  in FIG.  6 F. In  FIG. 6G , dialogue box  629  indicates that the currently selected, first of two suggested routes will take 10 minutes and 0.2 miles for the user to walk from the current location  608  of device  100  to the dry cleaner represented by pin  614   a . In  FIG. 6G , the first route  631   a  is highlighted in user interface  602 , and “route 1” affordance  631   b , when activated, causes the device to select (and highlight) route  631   a . In  FIG. 6G , route  631   a  displayed in user interface  602  is the same as route  616  displayed in user interface  604  but in a different orientation.  FIG. 6G  also illustrates displaying route  632   a  in user interface  602  and “route 2” affordance  632   b  configured to select (and highlight) route  632   a . In  FIG. 6G , “start” affordance  630   a , when activated, causes the device to start turn-by-turn directions to the currently selected (or highlighted) route (e.g., route  631   a ), and “clear” affordance  630   b , when activated, causes the device to clear the displayed routes (e.g., routes  631   a  and  632   a ) from user interface  602  and to display search box  609  in user interface  602 .  FIG. 6G  further illustrates detecting user touch input  633  over “start” affordance  630   a  on touch screen  112 .  FIG. 6G  further illustrates maintaining display of user interface  604  from  FIG. 6D  on display  546 - 1 . In some embodiments, when device  100  is connected to display  546 - 1  and display  546 - 1  is a vehicle display, device  100  displays driving directions rather than walking directions on both touch screen  112  and on display  546 - 1 . 
       FIG. 6H  illustrates displaying turn-by-turn directions box  634  indicating the user&#39;s first direction (or turn) on route  631   a  and the name of the destination (e.g., ABC Cleaners) in user interface  602  in response to detecting user touch input  633  over “start” affordance  630   a  in  FIG. 6G . In some embodiments, turn-by-turn directions box  634  occupies the entirety of touch screen  112 .  FIG. 6H  also illustrates detecting user touch input  635  on touch screen  112 . 
       FIG. 6H  further illustrates displaying a turn-by-turn direction mode in user interface  604  in response to device  100  detecting user touch input  633  over start affordance  630   a  in  FIG. 6G . In  FIG. 6H , while in the turn-by-turn mode, the current location of device  100  is displayed as marker  636  in user interface  604 . In some embodiments, the turn-by-turn direction mode displayed in  FIG. 6H  is further zoomed into the map displayed in user interface  604  in comparison to the map displayed in  FIGS. 6D-6G  (e.g., the map displayed on touch screen  112  is at a lower magnification level than the map displayed on display  546 - 1 ). 
       FIG. 61  illustrates displaying dialogue box  637  in user interface  602  in response to detecting user touch input  635  on touch screen  112  in  FIG. 6H . In  FIG. 61 , dialogue box  637  includes “pause” affordance  638   a  configured to pause turn-by-turn directions and “back” affordance  638   b  configured to display the results from the most recent search query (e.g., dry cleaners nearby device  100 &#39;s current location) within maps application  436 .  FIG. 61  also illustrates detecting user touch input  639  over “back” affordance  638   b .  FIG. 61  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6J  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a  and  614   b  nearby current location  608  of device  100  in user interface  602  (e.g., corresponding to the most recent search query in maps application  436  from  FIG. 6C ) in response to user touch input  639  (e.g., a tap input) over “back” affordance  638   b  in  FIG. 61 .  FIG. 6J  also illustrates detecting a pinch gesture that includes movement of contacts  640  and  641  on touch screen  112 .  FIG. 6J  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6K  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a ,  614   b ,  614   c , and  614   d  nearby current location  608  of device  100  in user interface  602  in response to detecting the pinch gesture in  FIG. 6J . For example, in  FIG. 6K , the map is zoomed out (e.g., displayed at a lower magnification level) in response to the pinch gesture, and a larger area of the map is displayed in user interface  602 .  FIG. 6K  also illustrates detecting a swipe gesture (sometimes herein also called a “drag gesture”) with user touch input  642  moving from position  642   a  to position  642   b  on touch screen  112 .  FIG. 6K  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1  (e.g., user interface  604  is not zoomed out in response to detecting the pinch gesture on touch screen display  112 ). 
       FIG. 6L  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a ,  614   b ,  614   c ,  614   e  and  614   f  nearby current location  608  of device  100  in user interface  602  in response to detecting the swipe gesture in  FIG. 6K . For example, the map is translated in a north-eastward direction in response to the swipe gesture in  FIG. 6K .  FIG. 6L  also illustrates detecting user touch input  643  over the user interface object (e.g., the pin) associated with the dry cleaners represented by pins  614   b  on touch screen  112 .  FIG. 6L  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1  (e.g., user interface  604  is not scrolled in response to detecting the swipe gesture on touch screen display  112 ). 
       FIG. 6M  illustrates displaying information box  644  corresponding to the dry cleaner represented by pin  614   b  in user interface  602  in response to detecting user touch input  643  over the user interface object (e.g., the pin) associated with the dry cleaners represented by pins  614   b  in  FIG. 6L . In  FIG. 6M , information box  644  includes the dry cleaning establishment&#39;s name (e.g., Mary Ann&#39;s Cleaners), the rating of the establishment (e.g., 5 out of 5 stars), the amount of user reviews for the establishment (e.g.,  927  reviews), and affordance  644   a  optionally includes additional information corresponding to the establishment.  FIG. 6M  also illustrates detecting user touch input  645  over affordance  644   a  on touch screen  112 .  FIG. 6M  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6N  illustrates displaying additional information corresponding to Mary Ann&#39;s Cleaners in user interface  602  in response to detecting user touch input  645  over affordance  644   a  in  FIG. 6M . In  FIG. 6N , user interface  602  includes information identifying the hours of operation of Mary Ann&#39;s Cleaners, the home page (or website) for Mary Ann&#39;s Cleaners, the phone number for Mary Ann&#39;s Cleaners, and the address for Mary Ann&#39;s Cleaners. In  FIG. 6N , user interface  602  also includes affordance  646  configured to display directions from the device&#39;s current location to Mary Ann&#39;s Cleaners and affordance  647  configured to display directions from Mary Ann&#39;s Cleaners to the device&#39;s current location.  FIG. 6N  also illustrates detecting user touch input  648  over affordance  646  on touch screen  112 .  FIG. 6N  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 60  illustrates displaying an interface in user interface  602  for inputting a start point and an end point for a route in response to detecting user touch input  648  over affordance  646  on touch screen  112  in  FIG. 6N . In  FIG. 60 , user interface  602  includes the address of the start point of the route in box  649   a  (e.g., the current location of device  100 ) and the address of the end point of the route in box  649   b  (e.g., Mary Ann&#39;s Cleaners, 1291 Judah Street, San Francisco, Calif.). In  FIG. 60 , box  649   a  and/or box  649   b  are enabled to be edited with virtual keyboard  651  displayed in user interface  602  or, alternatively, with a speech input. Affordance  649   c , when activated, causes the device to replace the location entered in box  649   a  with the location in box  649   b  and to replace the location entered in box  649   b  with the location in box  649   a . In  FIG. 60 , user interface  602  includes selectable routes  650  from the device&#39;s current location to previously entered destinations. In  FIG. 60 , user interface  602  further includes affordances  653   a ,  653   b , and  653   c  configured to select different modes of transportation for route calculation. For example, in  FIG. 60 , the “walk” mode of transportation is currently selected as shown by the highlighted frame around affordance  653   b .  FIG. 60  also illustrates displaying a “route” affordance  652   a  configured to calculate one or more routes from the start point in box  649   a  to the end point in box  649   b  and a ‘cancel” affordance  652   b  configured to clear the locations entered in boxes  649   a  and  649   b  or to redisplay user interface  602  displayed in  FIG. 6M .  FIG. 60  further illustrates detecting user touch input  655  over “route” affordance  654  (e.g., an affordance included in virtual keyboard  651 ) on touch screen  112 . In some embodiments, “route” affordance  654 , when activated, causes the device to calculate and/or display one or more routes from the start point in box  649   a  to the end point in box  649   b  (e.g., “route” affordance  654  functions similarly to “route” affordance  652   a ).  FIG. 60  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6P  illustrates displaying two suggested routes from current location  608  of device  100  to the dry cleaner represented by pin  614   b  in user interface  602  in response to detecting user touch input  655  over “route” affordance  654  on touch screen  112  in  FIG. 60 . In  FIG. 6P , user interface  602  dialogue box  656  indicating that the automatically selected, first of two suggested routes will take 5 minutes and 0.4 miles for the user to walk from current location  608  of device  100  to the dry cleaner represented by pin  614   b . In  FIG. 6P , the first route  658   a  is highlighted in user interface  602 , and “route 1” affordance  658   b , when activated, causes the device to select (and highlight) route  658   b . In  FIG. 6P , “start” affordance  657   a , when activated, causes the device to start turn-by-turn directions to the currently selected (or highlighted) route (e.g., route  658   a ), and “clear” affordance  657   b , when activated, causes the device to clear the displayed routes (e.g., routes  658   a  and  659   a ) from user interface  602  and to display search box  609  in user interface  602 .  FIG. 6P  further illustrates detecting user touch input  660  over “route 2” affordance  659   b  on touch screen  112 .  FIG. 6P  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6Q  illustrates displaying route  659   a  (route 2) as the selected (or highlighted) route in response to detecting touch input  660  over “route 2” affordance  659   b  in  FIG. 6P . In  FIG. 6Q , user interface  602  includes dialogue box  656  indicating that the second of the two suggested routes will take 6 minutes and 0.4 miles for the user to walk from current location  608  of device  100  to the dry cleaner represented by pin  614   b .  FIG. 6Q  further illustrates detecting user touch input  661  over “start” affordance  657   a  on touch screen  112 .  FIG. 6Q  further illustrates maintaining display of user interface  604  from  FIG. 6H  on display  546 - 1 . 
       FIG. 6R  illustrates displaying turn-by-turn directions box  662  indicating the user&#39;s first direction (or turn) on route  659   a  and the name of the destination (e.g., Mary Ann&#39;s Cleaners) in user interface  602  in response to detecting user touch input  661  over “start” affordance  657   a  in  FIG. 6Q . In some embodiments, turn-by-turn directions box  662  occupies the entirety of touch screen  112 . 
       FIG. 6R  further illustrates displaying a turn-by-turn direction mode in user interface  604  in response to detecting user touch input  661  over “start” affordance  657   a  in  FIG. 6Q  (e.g., even though user interface  604  was not previously synchronized with user interface  602  in response to prior inputs, when a destination and route are selected and turn-by-turn directions commence, the device synchronizes user interface  602  and user interface  604  so that both user interfaces show directions to the same destination using the same route). In  FIG. 6R , user interface  604  includes route  659   a , turn-by-turn directions box  663  indicating the user&#39;s first direction (or turn) on route  659   a  and the name of the destination (e.g., Mary Ann&#39;s Cleaners), and marker  654  indicating the current location of device  100 .  FIG. 6R  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being east).  FIG. 6R  further illustrates detecting user touch input  665  on display  546 - 1 . 
       FIG. 6S  illustrates displaying dialogue box  637  in user interface  602  in response to detecting user touch input  665  on display  546 - 1  in  FIG. 6R . In  FIG. 6S , dialogue box  637  includes “pause” affordance  638   a  configured to pause turn-by-turn directions and “back” affordance  638   b  configured to display the results from the most recent search query (e.g., dry cleaners nearby device  100 &#39;s current location) within maps application  436 . 
       FIG. 6S  further illustrates displaying affordance  612  in user interface  604  in response to detecting user touch input  665  on display  546 - 1  in  FIG. 6R . Affordance  612 , when activated, causes the device to invoke a digital assistant (e.g., Siri from Apple Inc. of Cupertino, Calif.).  FIG. 6S  also illustrates detecting user touch input  666  over affordance  612  on display  546 - 1 . In response to detecting user touch input  666  over affordance  612 , a digital assistant is invoked, and the digital assistant audibly prompts the user asking, “What may I help you with?” In response to the prompt, the user audibly, for example, asks the digital assistant, “Show me nearby coffee houses.” Alternatively, in some embodiments, the digital assistant is invoked by a predetermined audible command (e.g., “Hey, Siri”). 
       FIG. 6T  illustrates maintaining display of user interface  602  from  FIG. 6S  on touch screen  112 .  FIG. 6T  further illustrates displaying digital assistant dialogue box  667  in user interface  604 . digital assistant dialogue box  667  indicates that the digital assistant is searching for coffee houses in response to the user&#39;s audible request (e.g., “Show me nearby coffee houses.”). 
       FIG. 6U  illustrates displaying user interface objects (e.g., pins) associated with coffee houses  668   a  and  668   b  nearby current location  608  of device  100  in user interface  602  in response to the user&#39;s audible request (e.g., “Show me nearby coffee houses.”). In some embodiments, a search result (or establishment) matching the audible request is automatically selected (e.g., Java Haus) based on proximity, the establishment&#39;s ratings, the amount of reviews, the amount of times the user has frequented the establishment, and/or other factors. In  FIG. 6U , information box  669  corresponding to automatically selected coffee house  668   a  is also displayed in user interface  602 . Information box  669  includes the coffee house&#39;s name (e.g., Java Haus), the rating of the establishment (e.g., 4 out of 5 stars), the amount of user reviews for the establishment (e.g.,  320  reviews), and affordance  669   a  configured to display additional information corresponding to the establishment. Providing additional information in user interface  602  enables a passenger of a vehicle who is operating device  100  to provide additional information to a driver of the vehicle and/or select a destination based on the additional information provided in user interface  602 . 
       FIG. 6U  further illustrates displaying suggested route  671  from the current location  608  of device  100  to coffee house  668   a  (e.g., Java Haus) in user interface  604  in response to the user&#39;s audible request (e.g., “Show me nearby coffee houses.”). In some embodiments, a route for the automatically selected search result is displayed in user interface  604 . In  FIG. 6U , user interface  604  includes route  671 , turn-by-turn directions box  670  indicating the user&#39;s first direction (or turn) on route  671  and the name of the destination (e.g., Java Haus), and “start directions” affordance  618  configured to initiate a turn-by-turn mode.  FIG. 6U  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being north).  FIG. 6U  further illustrates detecting user touch input  672  over “start directions” affordance  618  on display  546 - 1 . 
       FIG. 6V  illustrates displaying turn-by-turn directions box  673  indicating the user&#39;s first direction (or turn) on route  671  and the name of the destination (e.g., Java Haus) in user interface  602  in response to detecting user touch input  672  over “start directions” affordance  662  on display  546 - 1  in  FIG. 6U . In some embodiments, turn-by-turn directions box  673  occupies the entirety of touch screen  112 . 
       FIG. 6V  further illustrates displaying a turn-by-turn direction mode in user interface  604  in response detecting user touch input  672  over “start directions” affordance  662  on display  546 - 1  in  FIG. 6U . In  FIG. 6V , while in the turn-by-turn mode, the current location of device  100  is displayed as marker  674  in user interface  604 . In some embodiments, the turn-by-turn direction mode displayed in  FIG. 6V  is further zoomed into the map displayed in user interface  604  in comparison to the map displayed in  FIG. 6U . 
       FIGS. 6W-6FF  illustrate exemplary user interfaces for sending update information to an affected display in accordance with some embodiments. The user interfaces in these figures are used to illustrate the processes described below, including the processes in  FIGS. 9A-9C . 
       FIG. 6W  illustrates two displays included in an external information presentation system  540  (sometimes herein also called “system  540 ”) that is communicatively coupled to portable multifunction device  100  (sometimes herein also called “device  100 ”) in accordance with some embodiments. In some embodiments, external information presentation system  540  is an entertainment and/or navigation system that is implemented in a vehicle. In some embodiments, display  546 - 1  is associated with a first external information presentation system  540 - 1 , and display  546 - 2  is associated with a second external information presentation system  540 - 2 . In some embodiments, display  546 - 1  is a primary display (e.g., a dashboard or vehicle navigation display), and display  546 - 2  is an auxiliary display (e.g., a rear-seat or entertainment display). In some embodiments, display  546 - 1  and display  546 - 2  are touch-sensitive displays with touch-sensitive surfaces on the displays and are configured to receive one or more touch inputs.  FIG. 6W  also illustrates jog dial  675  (e.g., a depressible and/or rotatable mechanical knob or dial) associated with system  540  configured to control one or both of display  546 - 1  and display  546 - 2 . 
       FIG. 6W  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a  and  614   b  nearby current location  608  of device  100  in a map/navigation application in user interface  604  of display  546 - 1 . For example, the pins are displayed in user interface  604  in response a search query (e.g., “dry cleaning” input into search box  609  in user interface  602  of device  100  in  FIG. 6C ). In some embodiments, a search result (or establishment) matching the user&#39;s search query is automatically selected (e.g., ABC Cleaners) based on proximity, the establishment&#39;s ratings, the amount of reviews, the amount of times the user has frequented the establishment, and other factors. In  FIG. 6W , destination information  678  corresponding to automatically selected the dry cleaner represented by pin  614   a  is also displayed in user interface  604 . Destination information  678  includes the dry cleaning establishment&#39;s name (e.g., ABC Cleaners), the rating of the establishment (e.g., 3 out of 5 stars), the amount of user reviews for the establishment (e.g.,  100  reviews), and the mileage from current location  608  of device  100  to the establishment. In some embodiments, turn-by-turn directions to the currently selected search result (e.g., the dry cleaner represented by pin  614   a ) are displayed in user interface  604  in response to a touch input anywhere inside of the dialogue box associated with destination information  678  corresponding to dry cleaner  514   a . In some other embodiments, turn-by-turn directions to the currently selected search result (e.g., the dry cleaner represented by pin  614   a ) are displayed in user interface  604  in response to depression of jog dial  675 .  FIG. 6W  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being north). 
       FIG. 6W  illustrates detecting a pinch gesture with user touch inputs  679  and  680  on display  546 - 1 . In response to detecting user touch inputs  679  and  680  (or the pinch gesture), display  546 - 1  (or system  540 ) sends input information indicative of user touch inputs  679  and  680  (or the pinch gesture) to device  100 . The input information includes an identifier associated with the touch-sensitive surface of display  546 - 1  (e.g., a unique identifier associated with the touch-sensitive surface of display  546 - 1 ) and input description information describing user touch inputs  679  and  680  (or the pinch gesture). In some embodiments, input description information includes raw data describing user touch inputs  679  and  680  such as the location of user touch inputs  679  and  680 , the magnitude of the movement of user touch inputs  679  and  680 , the length of time that user touch inputs  679  and  680  were detected, the surface area of user touch inputs  679  and  680 , and/or other information describing user touch inputs  679  and  680 . In some other embodiments, input description information includes data describing the pinch gesture such as the type of gesture performed, the location of the gesture, the magnitude of the movement of the gesture, and/or other information describing the gesture. 
     In response to receiving the input information associated with user touch inputs  679  and  680  (or the pinch gesture), device  100  determines that the identifier included in the input information is associated with display  546 - 1  (e.g., associating the touch event (or the gesture) with the touch-sensitive surface of display  546 - 1 ) based on an input-source to display mapping. After determining that the touch event detected in  FIG. 6W  is associated with display  546 - 1  (e.g., the affected display), device  100  also determines the display state of display  546 - 1  shown in  FIG. 6W  (e.g., user interface  604  is in a search results or destination selection mode). In some embodiments, device  100  determines the display state of a display based on information included in the input information. In some other embodiments, device  100  determines the display state of a display by querying system  540  for such information. 
       FIG. 6W  further illustrates displaying a list of songs  677  corresponding to an album in a media player application in user interface  676  of display  546 - 2 . 
       FIG. 6X  illustrates displaying user interface objects (e.g., pins) associated with the dry cleaners represented by pins  614   a ,  614   b ,  614   c , and  614   d  nearby current location  608  of device  100  in user interface  604  of display  546 - 1 . For example, the map displayed in user interface  604  in  FIG. 6X  is a zoomed out version of the map displayed in user interface  604  in  FIG. 6W . Display  546 - 1  displays a zoomed out map in user interface  604  in  FIG. 6X  in response to receiving update information from device  100  including an updated user interface corresponding to the pinch gesture detected on display  546 - 1  in  FIG. 6W  and the display state of user interface  604  in  FIG. 6W  (e.g., the search results or destination selection mode). 
       FIG. 6X  also illustrates detecting turn  681  (e.g., an approximately 90 degree clockwise turn) of jog dial  675 . In response to detecting turn  681 , jog dial  675  (or system  540 ) sends input information indicative of turn  681  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing turn  681 . For example, the input description information includes raw data describing turn  681  such as the magnitude (90 degrees) and direction (clockwise) of the turn. In response to receiving the input information associated with turn  681 , device  100  determines that the identifier included in the input information is associated with display  546 - 1  (e.g., associating the turn event with jog dial  675  which is currently mapped to display  546 - 1 ) based on the input-source to display mapping. After determining that the turn event detected in  FIG. 6X  is associated with display  546 - 1 , device  100  also determines the display state of display  546 - 1  shown in  FIG. 6X  (e.g., user interface  604  is in a search results or destination selection mode).  FIG. 6X  further illustrates maintaining display of the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2  (e.g., user interface  676  is not updated in response to rotation of jog dial  675  when jog dial  675  is not associated with the display on which user interface  676  is displayed). 
       FIG. 6Y  illustrates displaying destination information  682  corresponding to selected the dry cleaner represented by pin  614   d  in user interface  604  of display  546 - 1 . In  FIG. 6Y , display  546 - 1  displays destination information  682  corresponding to selected the dry cleaner represented by pin  614   d  (e.g., Suzie&#39;s Cleaners) in response to receiving update information from device  100  including an updated user interface corresponding to turn  681  detected by jog dial  675  in  FIG. 6X  and the display state of user interface  604  in  FIG. 6X  (e.g., the search results or destination selection mode). In some embodiments, the destination information (and hence the selected destination) is scrolled in accordance with the direction and magnitude of the turn of jog dial  675 . For example, when search results or a destination selection mode is displayed, a 90 degree turn of jog dial  675  selects a next search result, a clockwise turn scrolls the search results north-to-south, and a counter-clockwise turn scrolls the search results south-to-north. In  FIG. 6Y , in response to detecting turn  681  (e.g., a 90 degree clockwise turn) of jog dial  675  in  FIG. 6X , the dry cleaner represented by pin  614   d  is selected (or scrolled to) and destination information  682  corresponding to the dry cleaner represented by pin  614   d  (e.g., the next dry cleaner south of the dry cleaner represented by pin  614   a  displayed in  FIG. 6X ) is displayed in user interface  604 . 
       FIG. 6Y  also illustrates detecting turn  683  (e.g., an approximately 180 degree counter-clockwise turn) of jog dial  675 . In some embodiments, in response to detecting turn  683 , jog dial  675  (or system  540 ) sends input information indicative of turn  683  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing turn  683 . For example, the input description information includes raw data describing turn  683  such as the magnitude (180 degrees) and direction (counter-clockwise) of the turn. In response to receiving the input information associated with turn  683 , device  100  determines that the identifier included in the input information is associated with display  546 - 1  (e.g., associating the turn event with jog dial  675  which is currently mapped to display  546 - 1 ) based on the input-source to display mapping. After determining that the turn event detected in  FIG. 6Y  is associated with display  546 - 1 , device  100  also determines the display state of display  546 - 1  shown in  FIG. 6Y  (e.g., user interface  604  is in a search results or destination selection mode).  FIG. 6Y  further illustrates maintaining display of the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2 . 
       FIG. 6Z  illustrates displaying destination information  684  corresponding to selected the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners) in user interface  604  of display  546 - 1 . In  FIG. 6Z , display  546 - 1  displays destination information  684  corresponding to selected the dry cleaner represented by pin  614   b  in response to receiving update information from device  100  including an updated user interface corresponding to turn  683  detected by jog dial  675  in  FIG. 6Y  and the display state of user interface  604  in  FIG. 6Y  (e.g., the search results or destination selection mode). In  FIG. 6Z , in response to detecting turn  683  (e.g., an 180 degree counter-clockwise turn) of jog dial  675  in  FIG. 6Y , the dry cleaner represented by pin  614   b  is selected (or scrolled to) and destination information  684  corresponding to the dry cleaner represented by pin  614   b  (e.g., two dry cleaners to the north of the dry cleaner represented by pin  614   d  displayed in  FIG. 6Y ) is displayed in user interface  604 . 
       FIG. 6Z  also illustrates detecting a press on, or depression of, jog dial  675  with user touch input  685 . In some embodiments, in response to detecting user touch input  685 , jog dial  675  (or system  540 ) sends input information indicative of user touch input  685  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing user touch input  685 . For example, the input description information includes raw data describing user touch input  685  such as the force of the input and the amount of depression of jog dial  675 . In response to receiving the input information associated with user touch input  685 , device  100  determines that the identifier included in the input information is associated with display  546 - 1  (e.g., associating the press or depression event with jog dial  675  which is currently mapped to display  546 - 1 ) based on an input-source to display mapping. After determining that the depression event detected in  FIG. 6Z  is associated with display  546 - 1 , device  100  also determines the display state of display  546 - 1  shown in  FIG. 6Z  (e.g., user interface  604  is in a search results or destination selection mode).  FIG. 6Z  further illustrates maintaining display of the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2 . 
       FIG. 6AA  illustrates displaying a turn-by-turn direction mode from marker  664  indicating the current location of device  100  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners) in user interface  604  of display  546 - 1 . In  FIG. 6AA , display  546 - 1  displays the turn-by-turn direction mode in user interface  604  in response to receiving update information from device  100  including an updated user interface corresponding to user touch input  685  detected by jog dial  675  in  FIG. 6Z  and the display state of user interface  604  in  FIG. 6Z  (e.g., the search results or destination selection mode). In  FIG. 6AA , in response to detecting user touch input  685  depressing jog dial  675  in  FIG. 6Z , turn-by-turn directions from marker  664  indicating the current location of device  100  to the dry cleaner represented by pin  614   b  (e.g., selected with turn  683  of jog dial  675  in  FIG. 6Y ) on route  659   a  are displayed in turn-by-turn directions box  663  in user interface  604 .  FIG. 6AA  also illustrates compass  611  indicating the orientation of the map displayed in user interface  604  (e.g., the map is oriented with the top of display  546 - 1  being east). 
       FIG. 6AA  also illustrates detecting turn  686  (e.g., an approximately 90 degree counter-clockwise turn) of jog dial  675 . In response to detecting turn  686 , jog dial  675  (or system  540 ) sends input information indicative of turn  686  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing turn  686 . For example, the input description information includes raw data describing turn  686  such as the magnitude (90 degrees) and direction (counter-clockwise) of the turn. In response to receiving the input information associated with turn  681 , device  100  determines that the identifier included in the input information is associated with display  546 - 1  (e.g., associating the turn event with jog dial  675  which is currently mapped to display  546 - 1 ) based on the input-source to display mapping. After determining that the turn event detected in  FIG. 6AA  is associated with display  546 - 1 , device  100  also determines the display state of display  546 - 1  shown in  FIG. 6AA  (e.g., user interface  604  is in a turn-by-turn directions mode).  FIG. 6AA  further illustrates maintaining display of the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2 . 
       FIG. 6BB  illustrates displaying a turn-by-turn direction mode in user interface  604  of display  546 - 1 . For example, the turn-by-turn direction mode displayed in user interface  604  in  FIG. 6BB  is a zoomed out version of the turn-by-turn direction mode displayed in user interface  604  in  FIG. 6AA . In  FIG. 6BB , display  546 - 1  displays the zoomed out turn-by-turn direction mode in user interface  604  in  FIG. 6BB  in response to receiving update information from device  100  including an updated user interface corresponding to turn  686  detected by jog dial  675  in  FIG. 6AA  and the display state of user interface  604  in  FIG. 6AA  (e.g., the turn-by-turn directions mode).  FIG. 6BB  further illustrates maintaining display of the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2 . 
       FIG. 6CC  illustrates displaying a vehicle backup mode in user interface  604  of display  546 - 1 . For example, the vehicle backup mode displayed in user interface  604  includes a video feed from a backup camera implemented in the vehicle. In some embodiments, the vehicle backup mode occupies the entirety of display  546 - 1 . When system  540  is implemented in a vehicle, display  646 - 1  displays a vehicle backup mode in user interface  604  while the vehicle is in reverse. In some embodiments, the vehicle backup mode supersedes all update information received by displays  546 - 1  and  546 - 2  from device  100 . In some embodiments, the vehicle backup mode is displayed on one of the displays (e.g., display  546 - 1 ) but not on the other display (e.g., display  546 - 2 ). 
     Similarly,  FIG. 6CC  also illustrates displaying a vehicle backup mode in user interface  676  of display  546 - 2 . For example, the vehicle backup mode displayed in user interface  676  includes a video feed from the backup camera implemented in the vehicle. In some embodiments, the vehicle backup mode occupies the entirety of display  546 - 2 . When system  540  is implemented in a vehicle, display  646 - 2  displays a vehicle backup mode in user interface  676  while the vehicle is in reverse. In some other embodiments, display  646 - 2  does not display the vehicle backup mode in user interface  676  and maintains display of interface  676  while the vehicle is in reverse. 
       FIG. 6DD  illustrates displaying a turn-by-turn direction mode in user interface  604  from  6 BB on display  546 - 1  once the vehicle is no longer in reverse. 
       FIG. 6DD  also illustrates detecting turn  688  (e.g., an approximately 90 degree clockwise turn) of jog dial  675 . In response to detecting turn  688 , jog dial  675  (or system  540 ) sends input information indicative of turn  688  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing turn  688 . For example, the input description information includes raw data describing turn  688  such as the magnitude (90 degrees) and direction (clockwise) of the turn. 
     Device  100  detects a change in the input-source to display mapping that maps jog dial  675  to display  546 - 2 , instead of display  546 - 1 . For example, device  100  changes the input-source to display mapping based on communications from external information presentation system  540  (e.g., taking control of a display to show an output of a backup camera) or input-source-mapping update request such as a user switching a respective control from a first display mode in which the respective control controls a user interface in the first display to a second-display mode in which the respective control controls a user interface in the second display. In response to receiving the input information associated with turn  688 , device  100  determines that the identifier included in the input information is associated with display  546 - 2  (e.g., associating the turn event with jog dial  675  which is currently mapped to display  546 - 2 ) based on the changed input-source to display mapping. After determining that the turn event detected in  FIG. 6DD  is associated with display  546 - 2 , device  100  also determines the display state of display  546 - 2  shown in  FIG. 6DD  (e.g., user interface  676  is in an album song list mode). 
       FIG. 6DD  further illustrates returning to display the list of songs  677  in user interface  676  from  FIG. 6W  on display  546 - 2  once the vehicle is no longer in reverse. 
       FIG. 6EE  illustrates displaying the turn-by-turn direction mode in user interface  604  from  6 BB on display  546 - 1 .  FIG. 6EE  also illustrates displaying a scrolled downward list of songs  677  in user interface  676  of display  546 - 2 . In  FIG. 6EE , display  546 - 2  displays the scrolled downward list of songs  677  in user interface  676  in response to receiving update information from device  100  including an updated user interface corresponding to turn  688  detected by jog dial  675  in  FIG. 6DD  and the display state of user interface  676  in  FIG. 6DD  (e.g., the album song list mode). In  FIG. 6EE , in response to detecting turn  688  (e.g., an approximately 90 degree clockwise turn) of jog dial  675  in  FIG. 6DD , list of songs  677  is scrolled downward in user interface  604 . 
       FIG. 6EE  further illustrates detecting an upward swipe gesture (sometimes herein also called a “drag” gesture) with user touch input  689  moving from position  689   a  to position  689   b  on display  546 - 2 . In response to detecting user touch input  689  (or the swipe gesture), display  546 - 2  (or system  540 ) sends input information indicative of touch input  689  (or the swipe gesture) to device  100 . The input information includes an identifier associated with the touch-sensitive surface of display  546 - 2  (e.g., a unique identifier associated with the touch-sensitive surface of display  546 - 2 ) and input description information describing touch input  689  (or the swipe gesture). In response to receiving the input information associated with touch input  689  (or the swipe gesture), device  100  determines that the identifier included in the input information is associated with display  546 - 2  (e.g., associating the touch event (or the gesture) with the touch-sensitive surface of display  546 - 2 ) based on the input-source to display mapping. After determining that the touch event detected in  FIG. 6EE  is associated with display  546 - 2 , device  100  also determines the display state of display  546 - 2  shown in  FIG. 6EE  (e.g., user interface  676  is in the album song list mode). 
       FIG. 6FF  illustrates displaying the turn-by-turn direction mode in user interface  604  from  6 BB on display  546 - 1 .  FIG. 6FF  also illustrates displaying a scrolled upward list of songs  677  in user interface  676  of display  546 - 2 . In  FIG. 6FF , display  546 - 2  displays the scrolled upward list of songs  677  in user interface  604  in response to receiving update information from device  100  including an updated user interface corresponding to the swipe gesture detected on display  546 - 2  in  FIG. 6EE  and the display state of user interface  676  in  FIG. 6EE  (e.g., the album song list mode). In  FIG. 6FF , in response to detecting the upward swipe gesture in  FIG. 6EE , list of songs  677  is scrolled upward in user interface  604 . 
       FIGS. 7A-7D  are flow diagrams illustrating a method  700  of synchronizing two or more displays in accordance with some embodiments. Method  700  is performed at a first electronic device (e.g., device  300 ,  FIG. 3 , or portable multifunction device  100 ,  FIG. 1A ) with a first display and a touch-sensitive surface. In some embodiments, the first display is a touch screen display (e.g., touch screen  112 ) and the touch-sensitive surface is on the first display. In some embodiments, the first display is separate from the touch-sensitive surface. Some operations in method  700  are, optionally, combined and/or the order of some operations is, optionally, changed. 
     As described below, method  700  provides an intuitive way to synchronize two or more displays. The method reduces the cognitive burden on a user when displaying information on two or more displays, thereby creating a more efficient human-machine interface. For battery-operated electronic devices, enabling a user to use information displayed on two or more displays faster and more efficiently conserves power and increases the time between battery charges. 
     The first electronic device displays ( 702 ) a first user interface on the first display. In some embodiments, the first electronic device is a portable multifunction computing device such as a smart phone or tablet computer.  FIGS. 6A-6V , for example, show portable multifunction device  100  (sometimes herein called “device  100 ”) displaying user interface  602  (e.g., the first user interface) on touch screen  112 . 
     The first user interface enables ( 704 ) selection between a plurality of selectable objects (e.g., search results that correspond to a previously performed search operation).  FIG. 6D , for example, shows user interface objects (e.g., pins) corresponding to the dry cleaners represented by pins  614   a  and  614   b  displayed in user interface  602  of device  100 . The dry cleaners represented by pins  614   a  and  614   b  are displayed in user interface  602  in  FIG. 6D  in response to a search query for “dry cleaning” nearby the current location  608  of device  100  in  FIG. 6C . 
     The first user interface corresponds to a second user interface displayed on a second display different from the first display. In some embodiments, the first user interface and the second user interface are user interfaces for a same respective application (e.g., an application running on the first electronic device). User interface  602  (e.g., the first user interface) displayed on touch screen  112  of device  100  corresponds to user interface  604  (e.g., the second user interface) displayed on display  546 - 1  (e.g., a touch screen display) of external information presentation system  540  (sometimes herein called “system  540 ”). In some embodiments, display  546 - 1  is a primary display of a plurality of displays associated with system  540 . In some embodiments, display  546 - 1  is implemented in the dashboard of the vehicle and is visually accessible to the driver and/or passenger of the vehicle. 
     A first object from the plurality of selectable objects is displayed as a selected object in the second user interface (e.g., the first user object is a currently selected object in the second user interface).  FIG. 6D , for example, shows information box  613  corresponding to the dry cleaner represented by pin  614   a  displayed in user interface  602 . Information box  613  is displayed in user interface  602  due to the fact that the dry cleaner represented by pin  614   a  is automatically selected based on predetermined criteria.  FIG. 6D , for example, further shows route  616  from the current location  608  of device  100  to automatically selected the dry cleaner represented by pin  614   a  displayed in user interface  604  of display  546 - 1 . 
     In some embodiments, the first object was automatically selected ( 706 ) as the selected object based on predefined object selection criteria (e.g., after initiating a search and receiving a set of one or more search results, a first object that corresponds to the most relevant search result was automatically, without user intervention, selected as the selected object). In  FIG. 6D , for example, the dry cleaner represented by pin  614   a  is automatically selected based on proximity, the establishment&#39;s ratings, the amount of reviews, the amount of times the user has frequented the establishment, and/or other factors. 
     In some embodiments, the plurality of selectable objects correspond to ( 708 ) a plurality of search results produced in response to a search query (e.g., a typed or spoken search query), and the selected object corresponds to a currently selected search result. In  FIG. 6D , for example, user interface objects (e.g., pins) corresponding to the dry cleaners represented by pins  614   a  and  614   b  are displayed in user interface  602  of device  100  in response to the search query “dry cleaning” input into search box  609  in  FIG. 6C . In some embodiments, the search query is manually input into search box  609  by way of a virtual keyboard displayed in user interface  602  of touch screen  112 . In some other embodiments, the search query is audibly input into search query box  609  by way of a speech input from the user of device  100 . In  FIG. 6D , for example, the dry cleaner represented by pin  614   a  is automatically selected from the plurality of search results including the dry cleaners represented by pins  614   a  and  614   b . Also, in  FIG. 6D , user interface  604  of system  540  displays route  616  from current location  608  of user device  100  to selected the dry cleaner represented by pin  614   a.    
     In some embodiments, the plurality of selectable objects correspond to ( 710 ) a plurality of map locations, and the selected object corresponds to a currently selected destination. In  FIG. 6D , for example, user interface objects (e.g., pins) corresponding to the dry cleaners represented by pins  614   a  and  614   b  are map locations relative to current location  608  of device  100 . Also, in  FIG. 6D , user interface  604  of system  540  displays route  616  from current location  608  of user device  100  to the map location for selected the dry cleaner represented by pin  614   a.    
     In some embodiments, the plurality of selectable objects correspond to ( 712 ) a plurality of navigation routes, and the selected object corresponds to a currently selected navigation route.  FIG. 6G , for example, shows a plurality of selectable user interface objects, including “route 1” affordance  631   b  and “route 2” affordance  632   b , corresponding to routes  631   a  and  631   b , respectively, from current location  608  of user device  100  to the dry cleaners represented by pins  614   a  and  614   b . Also, in  FIG. 6D , user interface  604  of system  540  displays route  616  corresponding to highlighted route  631   a  in user interface  602  from current location  608  of user device  100  to selected the dry cleaner represented by pin  614   a.    
     In some embodiments, the plurality of selectable objects correspond to ( 714 ) a plurality of content items that can be played (or presented) with the device (e.g., the plurality of selectable objects are songs, playlists, audio books, radio stations, or the like), and the selected object corresponds to a currently selected content item. For example, a respective song in a list of songs is displayed as an automatically selected song on a user interface of touch screen  112  of device  100  based at least in part on the amount of plays of the respective song, the ordinal position of the respective song in an album, the last played song, and other factors. In this example, the respective automatically selected song is displayed as being currently played on a user interface of display  546 - 1 . 
     In some embodiments, the plurality of selectable objects correspond to ( 716 ) a plurality of applications, and the selected object corresponds to a currently selected application. 
     In some embodiments, the second display is ( 718 ) a display coupled to a second electronic device that is different from the first electronic device (e.g., in place of a native GUI of the second electronic device).  FIGS. 6A-6V , for example, show display  546 - 1  (e.g., the second display) coupled to system  540  (e.g., the second electronic device) that is different (and separate) from device  100 . 
     In some embodiments, the second electronic device controls ( 720 ) an m-vehicle entertainment system with a native graphical user interface, and the second user interface is displayed on the second display instead of at least a portion of the native graphical user interface of the second electronic device (e.g., the second user interface is generated by an application running on the first electronic device and is displayed instead of some or all of the native graphical user interface of the in-vehicle entertainment system). In  FIGS. 6A-6V , for example, system  540  controls an in-vehicle entertainment system including display  546 - 1 . For example, user interface  604  in  FIG. 6A , including climate controls for a vehicle, is the native graphical user interface of the in-vehicle entertainment system.  FIGS. 6B-6V , for example, show user interface  604  including a map displayed on display  546 - 1  in place of the native graphical user interface (e.g., climate controls) as shown in  FIG. 6A . 
     In some embodiments, the first electronic device receives ( 722 ) information that corresponds to a respective input from a control of the in-vehicle entertainment system (e.g., a tap or swipe gesture on a touch-sensitive surface associated with the second display, a button press operation for a button associated with the second display and/or a knob turn operation for a knob associated with the second display).  FIG. 6U , for example, shows system  540  detecting user touch input  672  over “start directions” affordance  672  in user interface  604  of display  546 - 1 . In this example, system  540  sends information to device  100  indicating that user touch input  672  was detected over “start directions” affordance  672  in user interface  604  of display  546 - 1 . 
     In some embodiments, in response to receiving the information that corresponds to the respective input, the first electronic device updates ( 724 ) the first user interface and the second user interface in accordance with the respective input.  FIG. 6V , for example, shows device  100  updating user interface  602  to display turn-by-turn directions box  673  on touch screen  112  and user interface  604  to display a turn-by-turn mode on display  546 - 1 . In some embodiments, while user interface  604  is in a turn-by-turn mode, the map displayed on display  546 - 1  is further zoomed into in comparison to when user interface  604  is not in turn-by-turn mode. 
     In some embodiments, the first user interface and the second user interface are both generated ( 726 ) by a same application running on the first electronic device (e.g., an application running on a smart phone generates a user interface for the phone and a user interface for display on a display of an in-vehicle entertainment system of a vehicle).  FIG. 6A , for example, shows user touch input  606  selecting maps application  436  in user interface  602 .  FIGS. 6B-6V , for example, show maps application  436  running on device  100  and generating both user interface  602  on touch screen  112  (e.g., the first user interface) and user interface  604  on display  546 - 1  (e.g., the second user interface). 
     While the first object is displayed ( 728 ) as the selected object in the second user interface, the first electronic device detects ( 730 ) a first input (e.g., a tap or swipe gesture on the first touch-sensitive surface of the first electronic device) from a user that corresponds to a request to display information about a second object in the plurality of selectable objects in the first user interface (e.g., without selecting the second object as the selected object).  FIG. 6L , for example, shows device  100  detecting user touch input  643  over the user interface object (e.g., pin) corresponding to the dry cleaner represented by pin  614   b  on the map displayed in user interface  602  including the dry cleaners represented by pins  614   a ,  614   b ,  614   c ,  614   e , and  614   f .  FIG. 6L , for example, also shows user system  540  displaying turn-by-turn directions mode including route  616  from marker  636  to the dry cleaner represented by pin  614   a  in user interface  604  of display  546 - 1  while device  100  detects user touch 
     While the first object is displayed ( 728 ) as the selected object in the second user interface, in response to detecting the first input, the first electronic device updates ( 732 ) the first user interface on the first display in accordance with the first input to display respective information about the second object while display of the first object as the selected object in the second user interface is maintained.  FIG. 6M , for example, shows device  100  updating user interface  602  to display information box  644  corresponding to the dry cleaner represented by pin  614   b  in response to detecting user touch input  643  over the user interface object (e.g., pin) corresponding to the dry cleaner represented by pin  614   b  in  FIG. 6L . While user interface  602  is updated in  FIG. 6M , user interface  604  is maintained on display  546 - 1  in  FIG. 6M  as shown prior to detecting user touch input  643  in  FIG. 6L . 
     In some embodiments, the first user interface is updated ( 734 ) in response to detecting the first input without providing, to the second display, information that enables the second user interface on the second display to be updated to display the respective information about the second object in the second user interface (e.g., the first electronic device does not send the respective information to the second electronic device or the second display in response to the first input).  FIG. 6M , for example, shows device  100  updating user interface  602  on touch screen  112  in response to detecting user touch input  643  in  FIG. 6L  without providing information to display  546 - 1  (or system  540 ) that enables user interface  604  on display  546 - 1  to be updated. While user interface  602  is updated in  FIG. 6M , user interface  604  is maintained on display  546 - 1  in  FIG. 6M  as shown prior to detecting user touch input  643  in  FIG. 6L . 
     In some embodiments, updating the first user interface on the first display in accordance with the first input to display respective information about the second object while display of the first object as the selected object in the second user interface is maintained includes ( 736 ) updating the first user interface on the first display in accordance with the first input to display respective information about the second object while the entire second user interface is maintained on the second display as it was displayed immediately prior to detecting the first input (e.g., the second user interface is not updated in response to the first update).  FIG. 6M , for example, shows device  100  updating user interface  602  on touch screen  112  to display information box  644  corresponding to the dry cleaner represented by pin  614   b  in response to detecting user touch input  643  in  FIG. 6L . While user interface  602  is updated in  FIG. 6M , user interface  604  is maintained on display  546 - 1  in  FIG. 6M  as shown prior to detecting user touch input  643  in  FIG. 6L . 
     While the first object is displayed ( 728 ) as the selected object in the second user interface, after updating the first user interface in accordance with the first input, the first electronic device detects ( 738 ) a second input from a user that corresponds to a request to select the second object as the selected object.  FIG. 6Q , for example, shows device  100  detecting user touch input  661  corresponding to a request to display turn-by-turn directions for route  659   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners). 
     In response to detecting ( 740 ) the second input, the first electronic device updates ( 742 ) the first user interface on the first display in accordance with the second input to display the second object as the selected object.  FIG. 6R , for example, shows, device  100  updating user interface  602  to display turn-by-turn directions box  662  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners) in response to detecting user touch input  661  in  FIG. 6Q . 
     In response to detecting ( 740 ) the second input, the first electronic device provides ( 744 ), to the second display, information that enables the second user interface on the second display to be updated to display the second object as the selected object instead of the first object. In response to detecting user touch input  661  in  FIG. 6Q , device  100  sends system  540  information to enable system  540  to update user interface  604  on display  546 - 1 .  FIG. 6R , for example, shows updated user interface  604  where turn-by-turn directions mode (e.g., from current location  608  of device  100  to the dry cleaner represented by pin  614   b ) is displayed in user interface  604  of display  546 - 1  including marker  664  indicating the current location of device  100 , route  659   a  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners), and turn-by-turn directions box  663  indicating the user&#39;s first direction (or turn) on route  659   a.    
     In some embodiments, after providing the information that enables ( 746 ) the second user interface on the second display to be updated to display the second object as the selected object instead of the first object, the first electronic device enters ( 748 ) a display synchronization mode (e.g., entering a playlist play mode or driving directions mode). FIG.  6 R, for example, shows device  100  displaying turn-by-turn directions box  662  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  in user interface  602  of touch screen  112  (e.g., a display synchronization mode). In some embodiments, while in the display synchronization mode ( 750 ): the first electronic device periodically updates ( 752 ) the first user interface over time (e.g., updating displayed cover art as the first electronic device plays through a sequence of songs in a playlist or updating a displayed map to indicate progress of a vehicle moving along a navigation route). For example, while device  100  displays turn-by-turn directions box  662  as shown in  FIG. 6R , device  100  periodically updates user interface  602  to show the updated next direction (or turn) on route  659   a  and the updated mileage and time remaining in turn-by-turn directions box  662  as device  100  approaches the destination (e.g., the dry cleaner represented by pin  614   b  corresponding to Mary Ann&#39;s Cleaners). In some embodiments, while in the display synchronization mode ( 750 ): the first electronic device provides ( 754 ) information that enables the second user interface on the second display to be synchronized with the first user interface as the first user interface is updated over time (e.g., providing updated cover art or map images to the display as the first electronic device plays through the playlist or the vehicle moves along the navigation route). For example, while device  100  displays turn-by-turn directions box  662  as shown in  FIG. 6R , device  100  provides information to system  540  that enables system  540  to display updated user interface  604  including the updated next direction (or turn) on route  659   a , the updated mileage and time remaining in turn-by-turn directions box  663  and marker  664  (e.g., the current location of device  100 ) as device  100  approaches the destination (e.g., the dry cleaner represented by pin  614   b  corresponding to Mary Ann&#39;s Cleaners). 
     In some embodiments, prior to detecting the first input, the first user interface is synchronized ( 756 ) with the second user interface (e.g., the first object is displayed in both the first user interface and the second user interface as the selected object); after responding to the first input and prior to detecting the second input, the first user interface is not synchronized with the second user interface (e.g., a second object is displayed as the selected object in the first user interface while the second object remains displayed as the selected object in the second user interface); and after responding to the second input, the first user interface is synchronized with the second user interface (e.g., the second object is displayed as the selected object in both the first user interface and the second user interface). 
     In  FIG. 6H , first user interface  602  and second user interface  604  are synchronized.  FIG. 6H , for example, shows user interface  602  on touch screen  112  displaying turn-by-turn directions box  634  indicating the user&#39;s first direction (or turn) on route  631   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   a  (e.g., the selected first object) and the name of the selected first object, or destination, (e.g., ABC Cleaners).  FIG. 6H , for example, also shows user interface  604  on display  546 - 1  displaying a turn-by-turn directions mode with route  616  from the current location  608  of device  100  to the dry cleaner represented by pin  614   a  (e.g., the first selected object). 
     In  FIG. 6M , first user interface  602  and second user interface  604  are not synchronized.  FIG. 6M , for example, shows user interface  602  on touch screen  112  displaying information box  644  corresponding to the dry cleaner represented by pin  614   b  (e.g., the selected second object).  FIG. 6M , for example, also shows user interface  604  on display  546 - 1  displaying route  616  from current location  608  of device  100  to the dry cleaner represented by pin  614   a  (e.g., the selected first object). 
     In  FIG. 6R , first user interface  602  and second user interface  604  are synchronized.  FIG. 6R , for example, shows user interface  602  on touch screen  112  displaying turn-by-turn directions box  662  indicating the user&#39;s first direction (or turn) on route  659   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., the selected second object) and the name of the selected second object, or destination, (e.g., Mary Ann&#39;s Cleaners).  FIG. 6R , for example, also shows user interface  604  on display  546 - 1  displaying a turn-by-turn directions mode with route  659   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., the selected second object). 
     Thus, as described above, the user interface displayed on touch screen display  112  and display  546 - 1  are intermittently synchronized. Intermittently synchronizing the user interfaces displayed on touch screen display  112  and display  546 - 1  enables a passenger in a vehicle to browse through information displayed on touch screen display  112  (e.g., investigating different candidate destinations including contact information, reviews, descriptions, etc.) without the user interface that is displayed on the driver-visible display (e.g., display  546 - 1 ) updating constantly in response to the activity of the passenger. However, once the passenger has committed to an operation (e.g., selected a destination) in the user interface displayed on touch screen display  112 , the user interfaces on the displays are synchronized, so that the driver can drive to the selected destination and the user can help to navigate to the selected destination. Similarly, if the driver selects a destination in the user interface that is displayed on the driver-visible display (e.g., display  546 - 1 ), the user interface displayed on touch screen display  112  is updated to reflect the driver&#39;s selection, so that the passenger can help the driver navigate to the selected destination. The intermittent synchronization of user interfaces described above is an improvement over a situation where the user interfaces displayed on two displays are continuously synchronized (e.g., because the passenger is able to view additional information without repeatedly changing the information displayed to the driver). Additionally, the intermittent synchronization of user interfaces describe above is an improvement over a situation where the user interfaces displayed on two displays are never synchronized (e.g., because the passenger does not need to take the additional step of updating a destination address in a car navigation system after looking up the address on device  100 ). 
     It should be understood that the particular order in which the operations in  FIGS. 7A-7D  have been described is merely exemplary and is not intended to indicate that the described order is the only order in which the operations could be performed. One of ordinary skill in the art would recognize various ways to reorder the operations described herein. Additionally, it should be noted that details of other processes described herein with respect to other methods described herein (e.g., methods  800  and  900 ) are also applicable in an analogous manner to method  700  described above with respect to  FIGS. 7A-7D . For example, the contacts, gestures, user interface objects described above with reference to method  700  optionally have one or more of the characteristics of the contacts, gestures, user interface objects described herein with reference to other methods described herein (e.g., methods  800  and  900 ). For brevity, these details are not repeated here. 
       FIGS. 8A-8B  are flow diagrams illustrating a method  800  of synchronizing two or more displays in accordance with some embodiments. Method  800  is performed at a portable electronic device (e.g., device  300 ,  FIG. 3 , or portable multifunction device  100 ,  FIG. 1A ) that is in communication with a vehicle display of a vehicle. The portable electronic device includes a portable-device display and a touch-sensitive surface. In some embodiments, the portable-device display is a touch screen display and the touch-sensitive surface is on the portable-device. In some embodiments, the portable-device is separate from the touch-sensitive surface. Some operations in method  800  are, optionally, combined and/or the order of some operations is, optionally, changed. 
     As described below, method  800  provides an intuitive way to synchronize two or more displays. The method reduces the cognitive burden on a user when using two or more displays, thereby creating a more efficient human-machine interface. For battery-operated electronic devices, enabling a user to synchronize two or more displays faster and more efficiently conserves power and increases the time between battery charges. 
     The portable electronic device obtains ( 802 ) a set of map search results that includes a plurality of candidate destinations.  FIG. 6C , for example, shows a user search query (e.g., dry cleaning) displayed in search box  609  in user interface  602  of touch screen  112 . In response to the search query, device  100  obtains a set of map search results that includes a plurality of candidate destinations by searching a memory local to device  100 , a memory external to device  100 , the Internet, or a combination thereof. 
     The portable electronic device displays ( 804 ) a portable-device navigation interface on the portable-device display, where the portable-device navigation interface enables selection of a destination from the plurality of candidate destinations (e.g., search results that correspond to a previously performed search operation).  FIG. 6D , for example, shows a portable-device navigation interface (e.g., user interface  602 ) corresponding to the search query “dry cleaning” input into search query box  609  in  FIG. 6C  displayed on touch screen  112 . In  FIG. 6D , user interface  602  includes selectable user interface objects (e.g., pins), or affordances, corresponding to the dry cleaners represented by pins  614   a  and  614   b  nearby current location  608  of device  100 . 
     The portable electronic device sends ( 806 ) information to the vehicle display that enables the vehicle display to display a vehicle navigation interface, where a first destination of the plurality of candidate destinations is a selected destination in the vehicle navigation interface.  FIG. 6D , for example, shows a vehicle navigation interface (e.g., user interface  604 ) displayed on display  546 - 1  of system  540 . In  FIG. 6D , the dry cleaner represented by pin  614   a  (e.g., ABC Cleaners) is displayed as the selected destination in user interface  604  of display  546 - 1  and route  616  from current location  608  of device  100  to the dry cleaner represented by pin  614   a  is also displayed in user interface  604  of display  546 - 1 . In some embodiments, display  546 - 1  is a touch screen display. In some embodiments, display  546 - 1  is a primary display of a plurality of displays associated with system  540 . In some embodiments, display  546 - 1  is implemented in the dashboard of the vehicle and is visually accessible to the driver and/or passenger of the vehicle. 
     While the first destination is ( 808 ) the selected destination in the vehicle navigation interface, the portable electronic device detects ( 810 ) a first input (e.g., a tap or swipe gesture on a touch-sensitive surface of the first electronic device) from a user that corresponds to a request to display information about one or more candidate destinations in the plurality of candidate destinations other than the first destination (e.g., without selecting the second object as the selected object).  FIG. 6L , for example, shows device  100  detecting user touch input  643  over the user interface object (e.g., pin) corresponding to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners) on the map displayed in user interface  602 . In  FIG. 6L , the map displayed in user interface includes the dry cleaners represented by pins  614   a ,  614   b ,  614   c ,  614   e , and  614   f  In  FIG. 6L , for example, the dry cleaner represented by pin  614   a  (e.g., ABC Cleaners) is displayed as the selected destination in user interface  604  of display  546 - 1 . 
     While the first destination is ( 808 ) the selected destination in the vehicle navigation interface, in response to detecting the first input, the portable electronic device updates ( 812 ) the portable-device navigation interface on the portable-device display in accordance with the first input without the vehicle navigation interface on the vehicle display being updated.  FIG. 6M , for example, shows device  100  updating user interface  602  to display information box  644  corresponding to the dry cleaner represented by pin  614   b  in response to detecting user touch input  643  over the user interface object (e.g., pin) corresponding to the dry cleaner represented by pin  614   b  in  FIG. 6L . In  FIG. 6M , user interface  602  is updated without providing information to display  546 - 1  (or system  540 ) that enables user interface  604  on display  546 - 1  to be updated. In  FIG. 6M , for example, the dry cleaner represented by pin  614   a  is displayed as the selected destination in user interface  604  of display  546 - 1 . 
     While the first destination is ( 808 ) the selected destination in the vehicle navigation interface, after updating the portable-device navigation interface in accordance with the first input, the portable electronic device detects ( 814 ) a second input from a user that corresponds to a request to select a second destination in the plurality of candidate destinations as the selected destination.  FIG. 6Q , for example, shows device  100  detecting user touch input  661  corresponding to a request to display turn-by-turn directions for route  659   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners). 
     In response to detecting ( 816 ) the second input, the portable electronic device updates ( 818 ) the portable-device navigation interface on the portable-device display in accordance with the second input to display the second destination as the selected destination.  FIG. 6R , for example, shows, device  100  updating user interface  602  to display turn-by-turn directions box  662  with directions to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners) in response to detecting user touch input  661  in  FIG. 6Q . 
     In response to detecting ( 816 ) the second input, the portable electronic device sends ( 820 ) information to the vehicle display that enables the vehicle display to update the vehicle navigation interface in accordance with the second input to display the second destination as the selected destination. In response to detecting user touch input  661  in  FIG. 6Q , device  100  sends system  540  information to enable system  540  to update user interface  604  on display  546 - 1 .  FIG. 6R , for example, shows updated user interface  604  where turn-by-turn directions mode is displayed in user interface  604  of display  546 - 1  including marker  664  indicating the current location of device  100 , route  659   a  from current location  608  of device  100  to the dry cleaner represented by pin  614   b  (e.g., Mary Ann&#39;s Cleaners), and turn-by-turn directions box  663  indicating the user&#39;s first direction (or turn) on route  659   a.    
     It should be understood that the particular order in which the operations in  FIGS. 8A-8B  have been described is merely exemplary and is not intended to indicate that the described order is the only order in which the operations could be performed. One of ordinary skill in the art would recognize various ways to reorder the operations described herein. Additionally, it should be noted that details of other processes described herein with respect to other methods described herein (e.g., methods  700  and  900 ) are also applicable in an analogous manner to method  800  described above with respect to  FIGS. 8A-8B . For example, the contacts, gestures, user interface objects described above with reference to method  800  optionally have one or more of the characteristics of the contacts, gestures, user interface objects described herein with reference to other methods described herein (e.g., methods  700  and  900 ). For brevity, these details are not repeated here. 
       FIGS. 9A-9C  are flow diagrams illustrating a method  900  of sending update information to an affected display in accordance with some embodiments. Method  900  is performed at an electronic device (e.g., device  300 ,  FIG. 3 , or portable multifunction device  100 ,  FIG. 1A ) that is in communication with a plurality of displays that include a first display and a second display. In some embodiments, the electronic device, optionally, includes a display and a touch-sensitive surface. In some embodiments, the display is a touch screen display and the touch-sensitive surface is on the electronic device. In some embodiments, the electronic device is separate from the touch-sensitive surface. Some operations in method  900  are, optionally, combined and/or the order of some operations is, optionally, changed. 
     As described below, the method  900  provides an efficient way to send update information to an affected display. 
     An electronic device that is in communication with a plurality of displays that include a first display and a second display receives ( 902 ) first input information that is indicative of a first input detected by a first input source of a plurality of input sources, where the first input information includes: a first (unique) identifier for the first input source; and a first input description that describes the first input. For example, the first input source description is raw input data such as contact locations and movement amounts/directions detected on a touch-sensitive surface and/or gesture data describing a type of gesture that was performed on the touch-sensitive surface. In some embodiments, the device is in communication with a plurality of different input sources (e.g., one or more buttons, knobs, jog dials, and/or touch-sensitive surfaces) where a respective input source is mapped to work in conjunction with a particular display. In some embodiments, as described in greater detail below with reference to  FIG. 6DD-6EE , the mapping is, optionally, updated so that the mapping of a respective input source is changed from being mapped to the first display to being mapped to the second display. 
       FIGS. 6W-6FF , for example, show device  100  in communication with display  546 - 1  and  546 - 2 . For example, display  546 - 1  (e.g., a primary display) and  546 - 2  (e.g., an auxiliary display) are associated with system  540  which is implemented in a vehicle. For example, jog dial  675  is associated with system  540  and, when activated, causes the device to control one or both of display  546 - 1  and display  546 - 2 .  FIG. 6X , for example, shows jog dial  675  detecting turn  681  (e.g., an approximately 90 degree clockwise turn). In response to detecting turn  681 , jog dial  675  (or system  540 ) sends input information indicative of turn  681  to device  100 . The input information includes an identifier associated with jog dial  675  (e.g., a unique identifier associated with jog dial  675 ) and input description information describing turn  681 . For example, the input description information includes raw data describing turn  681  such as the magnitude (90 degrees) and direction (clockwise) of the turn. 
     The device selects ( 904 ) a first affected display from the plurality of displays based on the first identifier and an input-source mapping that maps input sources to corresponding displays. For example, in response to receiving input information corresponding to turn  681  in  FIG. 6X  from jog dial  675 , device  100  selects (or determines) an affected display by correlating the identifier (e.g., identifying the input source as jog dial  675 ) included in the input information with a display (e.g., display  546 - 1 ) based on an input-source mapping that maps input sources to displays. 
     In some embodiments, selecting the first affected display includes ( 906 ): in accordance with a determination that the first input source is assigned to the first display in the input-source mapping, selecting the first display as the first affected display that is affected by the first input; and in accordance with a determination that the first input source is assigned to the second display, different from the first display, in the input-source mapping, selecting the second display as the first affected display that is affected by the first input. For example, in response to receiving input information corresponding to the pinch gesture in  FIG. 6W  from the touch-sensitive surface associated with display  546 - 1 , device  100  selects (or determines) an affected display by correlating the identifier (e.g., identifying the input source as the touch-sensitive surface associated with display  546 - 1 ) included in the input information with a display (e.g., display  546 - 1 ) based on the input-source mapping that maps input sources to displays. In another example, in response to receiving input information corresponding to the upward swipe gesture in  FIG. 6EE  from the touch-sensitive surface associated with display  546 - 2 , device  100  selects (or determines) an affected display by correlating the identifier (e.g., identifying the input source as the touch-sensitive surface associated with display  546 - 2 ) included in the input information with a display (e.g., display  546 - 2 ) based on the input-source mapping that maps input sources to displays. 
     In some embodiments, after selecting the first affected display, the device ( 908 ): determines a respective state of a user interface displayed on the first affected display (e.g., a user interface displayed on the first affected display immediately prior to when the first input information was received); and generates the update information based on the first input description and the respective state of the user interface displayed on the first affected display. For example, in response to receiving input information corresponding to turn  681  in  FIG. 6X  from jog dial  675 , device  100  selects (or determines) an affected display by correlating the identifier (e.g., identifying the input source as jog dial  675 ) included in the input information with a display (e.g., display  546 - 1 ) based on an input-source mapping that maps input sources to displays. In this example, after determining that the turn event detected in  FIG. 6X  is associated with display  546 - 1 , device  100  also determines the display state of display  546 - 1  shown in  FIG. 6X  (e.g., user interface  604  is in a search results or destination selection mode). In this example, device  100  generates the update information (e.g., the updated user interface displayed on display  546 - 1  in  FIG. 6Y ) based on the input description information shown in  FIG. 6X  (e.g., an approximately 90 degree clockwise turn) and the display state of display  546 - 1  (e.g., user interface  604  is in a search results or destination selection mode). 
     In some embodiments, in accordance with a determination that the respective state of the user interface displayed on the first affected display is a first state, the update information corresponds to ( 910 ) performing a first operation for the respective state of the user interface displayed on the first affected display (e.g., the respective state is displaying a “now playing” interface for playing audio and the respective operation includes adjusting a volume level of audio playback associated with the user interface displayed on the first affected display in accordance with an amount of rotation of a knob); and in accordance with a determination that the respective state of the user interface displayed on the first affected display is a second state different from the first state, the update information corresponds to performing a second operation, different from the first operation, for the respective state of the user interface displayed on the first affected display (e.g., the respective state is displaying a list of selectable items such as audio content items and the respective operation includes navigating through the list of selectable items on the first affected display in accordance with an amount of rotation of a knob).  FIGS. 6Y-6Z , for example, shows display  546 - 1  scrolling south-to-north through selected search results (e.g., dry cleaners) in user interface  604  in response to detecting turn  683  of jog dial  675  in  FIG. 6Y  (e.g., an approximately 180 degree counter-clockwise turn) and in accordance with the display state of user interface  604  in  FIG. 6Y  (e.g., a search results or destination selection mode).  FIGS. 6AA-6BB , for example, show display  546 - 1  zooming out a turn-by-turn directions mode in user interface  604  in response to detecting turn  686  of jog dial  675  in  FIG. 6AA  (e.g., an approximately 90 degree counter-clockwise turn) and in accordance with the display state of user interface  604  in  FIG. 6AA  (e.g., a turn-by-turn directions mode). 
     In some embodiments, prior to receiving the first input information, the respective user interface has a prior state; and the device updates ( 912 ) the user interface to an updated state that is different from the prior state based on the first input and the prior state of the respective user interface (e.g., in response to a swipe gesture on a touch-sensitive surface or a rotation of a knob, a map user interface is scrolled in accordance with a magnitude and direction of the swipe gesture or the magnitude of the rotation of the knob).  FIGS. 6EE-6FF , for example, show display  546 - 2  scrolling up a list of songs  677  in user interface  676  in response to detecting an upward swipe gesture with user touch input  689  on display  546 - 2  in  FIG. 6EE  and in accordance with the display state of user interface  676  in  FIG. 6EE  (e.g., an album song list mode). 
     In some embodiments, prior to sending the update information to the first affected display, the device generates ( 914 ) the update information based on the first input information, where: in accordance with a determination that the first input description describes first input properties, the device generates first update information; and in accordance with a determination that the first input description describes second input properties different from the first input properties, the device generates second update information different from the first update information. For example, when the first input information corresponds to rotation of a knob while a list is displayed on the first affected display, if the first input description indicates that the first input includes clockwise rotation of a knob, the device scrolls a list downward on the affected display; in contrast, if the first input description indicates that the first input includes counter-clockwise rotation of the knob, the device scrolls the list upward on the affected display. 
     In another example, when the search results or a destination selection mode is displayed, a 90 degree turn of jog dial  675  selects a next search result, a clockwise turn scrolls the search results north-to-south, and a counter-clockwise turn scrolls the search results south-to-north.  FIGS. 6X-6Y , for example, show display  546 - 1  scrolling north-to-south through selected search results (e.g., dry cleaners) in user interface  604  in response to detecting turn  681  of jog dial  675  in  FIG. 6X  (e.g., an approximately 90 degree clockwise turn). In contrast,  FIGS. 6Y-6Z , for example, shows display  546 - 1  scrolling south-to-north through selected search results (e.g., dry cleaners) in user interface  604  in response to detecting turn  683  of jog dial  675  in  FIG. 6Y  (e.g., an approximately 180 degree counter-clockwise turn). 
     The device sends ( 916 ), to the first affected display, update information that enables the first affected display to be updated in accordance with the first input. For example, in response to receiving input information corresponding to turn  681  in  FIG. 6X  from jog dial  675 , device  100  selects display  546 - 1  as the affected display by correlating the identifier (e.g., identifying the input source as jog dial  675 ) included in the input information with display  546 - 1  based on the input-source mapping. After selecting display as the affected display, device  100  sends affected display  546 - 1  update information that enables affected display  546 - 1  to be updated. 
     In some embodiments, the update information includes ( 918 ) information corresponding to the first input (e.g., raw input data such as contact locations and movement amounts/directions detected on a touch-sensitive surface and/or gesture data describing a type of gesture that was performed on the touch-sensitive surface). In some embodiments, the update information includes the first input description. In some embodiments, the update information is generated based on the first input description (e.g., the first input description is raw touch input data and the update information includes a gesture that corresponds to the raw touch input data). 
     In some embodiments, the update information includes ( 920 ) an updated user interface for display at the first affected display (e.g., an image for display on the first display that includes a plurality of user interface objects). After selecting display  546 - 1  as the affected display corresponding to turn  681  in  FIG. 6X , device I  00  sends affected display  546 - 1  update information that enables affected display  546 - 1  to be updated in accordance with the magnitude (90 degrees) and direction (clockwise) of turn  681  of jog dial  675  in  FIG. 6X . For example, the update information includes an updated user interface that scrolls the search results (e.g., dry cleaners) so that the next dry cleaner south (e.g., Suzie&#39;s Cleaners corresponding to the dry cleaner represented by pin  614   d ) from ABC Cleaners corresponding to the dry cleaner represented by pin  614   a  is displayed as the selected search result in user interface  604  in  FIG. 6Y . 
     In some embodiments, the device generates ( 922 ) user interfaces for two or more displays of the plurality of displays and provides respective user interfaces to corresponding displays. For example, device  100  sends images that are representative of a first map/navigation user interface for display on a first display (e.g., primary display  546 - 1  or a dashboard navigation display) of a vehicle information display system (e.g., system  540 ), such as a vehicle entertainment or navigation system, and generates a second, different, map/navigation user interface for a second, different, display that is structurally integrated with the device (e.g., touch-screen  112  of device  100  or another portable electronic device). In some embodiments, the device sends images that are representative of a different user interface for display on a third display in the vehicle (e.g., auxiliary display  546 - 2  or a rear-seat entertainment display) of a vehicle information display system (e.g., system  540 ). 
     In some embodiments, after sending the update information that enables the first affected display to be updated in accordance with the first input ( 924 ), the device receives ( 926 ) second input information that is indicative of a second input detected by a second input source of the plurality of input sources distinct from the first input source, where the second input information includes: a second (unique) identifier for the second input source; and a second input description that describes the second input. For example, the second input description is raw input data such as contact locations and movement amounts/directions detected on a touch-sensitive surface and/or gesture data describing a type of gesture that was performed on the touch-sensitive surface. After selecting display  546 - 1  as the first affected display corresponding to turn  681  in  FIG. 6X , device  100  sends first affected display  546 - 1  update information that enables first affected display  546 - 1  to be updated as shown in  FIG. 6Y . Subsequently,  FIG. 6EE , for example, shows the touch-sensitive surface associated with display  546 - 2  detecting an upward swipe gesture with user touch input  689 . In response to detecting the upward swipe gesture, the touch-sensitive surface associated with display  546 - 2  (or system  540 ) sends input information indicative of user touch input  689  (or the upward swipe gesture) to device  100 . The input information includes an identifier associated with the touch-sensitive surface associated with display  546 - 2  (e.g., a unique identifier associated with the touch-sensitive surface associated with display  546 - 2 ) and input description information describing user touch input  689  (or the upward swipe gesture). 
     In some embodiments, after sending the update information that enables the first affected display to be updated in accordance with the first input ( 924 ), the device selects ( 928 ) a second affected display from the plurality of displays based on the second identifier and the input-source mapping. In response to receiving input information corresponding to the upward swipe gesture in  FIG. 6EE  from the touch-sensitive surface associated with display  546 - 2 , device  100  selects display  546 - 2  as the second affected display by correlating the identifier (e.g., identifying the input source as the touch-sensitive surface associated with display  546 - 2 ) included in the input information with a display (e.g., display  546 - 2 ) based on the input-source mapping that maps input sources to displays. 
     In some embodiments, after sending the update information that enables the first affected display to be updated in accordance with the first input ( 924 ), the device sends ( 930 ), to the second affected display, update information that enables the second affected display to be updated in accordance with the second input. In some embodiments (e.g., where the first input source and the second input source are both mapped to a same display), the first affected display is the same as the second affected display. In some embodiments (e.g., where the first input source and the second input source are mapped to different displays), the first affected display is different from the second affected display. After selecting display  546 - 2  as the second affected display, device  100  sends second affected display  546 - 2  update information that enables affected display  546 - 2  to be updated. For example, in  FIG. 6FF , the update information includes an updated user interface that enabled display  546 - 2  to display list  677  scrolled upward in user interface  676 . 
     In some embodiments, the device detects ( 932 ) a change in availability of a respective display of the plurality of displays, and in response to detecting the change in availability of the respective display, the device updates the input-source mapping to show the change in availability of the respective display. In some embodiments, the change in availability of the respective display includes a computer system (e.g., a vehicle information display system such as a navigation or entertainment system) that is different from the electronic device taking control of the respective display. In some embodiments, the change in availability of the respective display includes a computer system that is different from the electronic device giving control of the respective display to (or back to) the electronic device (e.g., while the vehicle is backing up, a vehicle information display system displays a video feed from a back-up camera on a display of the vehicle information display system and after the vehicle has ceased to back up, the vehicle information display system enables the electronic device to again display a user interface provided by the electronic device on the display of the vehicle information display system). 
       FIGS. 6W-6FF , for example, show display  546 - 1  and display  546 - 2  associated with system  540  that is implemented in a vehicle. While the vehicle is in reverse,  FIG. 6CC , for example, shows display  546 - 1  displaying a vehicle backup mode including a video feed from backup camera in user interface  604  and display  546 - 2  displaying a vehicle backup mode including a video feed from the backup camera in user interface  676 . While the vehicle is in reverse, vehicle backup mode supersedes all update information received by displays  546 - 1  and  546 - 2  from device  100 . 
     In some embodiments, while a respective input source is assigned to the first display, the device detects ( 934 ) a change in display assignment for a respective input source of the plurality of input sources from the first display to the second display, and in response to detecting the change in display assignment for the respective input source, the device updates the input-source mapping to show the change in display assignment for the respective input source, so that input information that is indicative of inputs associated with the respective input source is used to update a user interface displayed on the second display instead of being used to update a user interface displayed on the first display. For example, a passenger in a vehicle switches from using a first knob to control a user interface in a primary display of a vehicle information display system to using the first knob to control a user interface in an auxiliary display of the vehicle information display system (e.g., a rear-seat entertainment display) and input information that includes an identifier for the first knob is used to update a user interface displayed on the auxiliary display instead of being used to update a user interface displayed on the primary display. 
     In  FIGS. 6W-6CC , jog dial  675 , when activated, causes the device to control display  546 - 1 . Thus, in  FIGS. 6W-6CC , jog dial  675  is associated with display  546 - 1  in the input-source to display mapping. For example,  FIGS. 6AA-6BB  show display  546 - 1  zooming out a turn-by-turn directions mode in user interface  604  in response to detecting turn  686  of jog dial  675  (e.g., an approximately 90 degree counter-clockwise turn) in  FIG. 6AA  in accordance with a determination that jog dial  675  is mapped to display  546 - 1 . 
     In contrast, in  FIGS. 6DD-6EE , jog dial  675 , when activated, causes the device to control display  546 - 2 . Thus, in  FIGS. 6DD-6EE , jog dial  675  is associated with display  546 - 2  in the changed input-source to display mapping. In another example,  FIGS. 6DD-6EE  show display  546 - 2  scrolling down list  677  in user interface  676  in response to detecting turn  688  of jog dial  675  (e.g., an approximately 90 degree clockwise turn) in  FIG. 6DD  in accordance with a determination that jog dial  675  is mapped to display  546 - 2 . 
     It should be understood that the particular order in which the operations in  FIGS. 9A-9C  have been described is merely exemplary and is not intended to indicate that the described order is the only order in which the operations could be performed. One of ordinary skill in the art would recognize various ways to reorder the operations described herein. Additionally, it should be noted that details of other processes described herein with respect to other methods described herein (e.g., methods  700  and  800 ) are also applicable in an analogous manner to method  900  described above with respect to  FIGS. 9A-9C . For example, the contacts, gestures, user interface objects described above with reference to method  900  optionally have one or more of the characteristics of the contacts, gestures, user interface objects described herein with reference to other methods described herein (e.g., methods  700  and  800 ). For brevity, these details are not repeated here. 
     In accordance with some embodiments,  FIG. 10  shows a functional block diagram of a first electronic device  1000  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 10  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 10 , a first electronic device  1000  includes a first display unit  1002  configured to display to display a first user interface, where: the first user interface enables selection between a plurality of selectable objects; the first user interface corresponds to a second user interface displayed on a second display unit different from the first display unit; and a first object from the plurality of selectable objects is displayed as a selected object in the second user interface. Optionally, first electronic device  1000  also includes a communications interface unit  1004  configured to communicate with a second electronic device and a first touch-sensitive surface unit  1006  configured to receive one or more touch inputs. First electronic device  1000  further includes a processing unit  1008  coupled to first display unit  1002 , and, optionally, coupled to communications interface unit  1004  and first touch-sensitive surface unit  1006 . In some embodiments, processing unit  1008  includes a detecting unit  1010 , an updating unit  1012 , a providing unit  1014 , a synchronization unit  1016 , and a receiving unit  1018 . 
     While the first object is displayed as the selected object in the second user interface, processing unit  1008  is configured to: detect (e.g., with detecting unit  1010 ) a first input from a user that corresponds to a request to enable display of information about a second object in the plurality of selectable objects in the first user interface; in response to detecting the first input, update (e.g., with updating unit  1012 ) the first user interface on first display unit  1002  in accordance with the first input to enable display of respective information about the second object while display of the first object as the selected object in the second user interface is maintained; and after updating the first user interface in accordance with the first input, detect (e.g., with detecting unit  1010 ) a second input from a user that corresponds to a request to select the second object as the selected object. In response to detecting the second input, processing unit  1008  is further configured to: update (e.g., with updating unit  1012 ) the first user interface on first display unit  1002  in accordance with the second input to enable display of the second object as the selected object; and provide (e.g., with providing unit  1014 ), to the second display unit, information that enables the second user interface on the second display unit to be updated to enable display of the second object as the selected object instead of the first object. 
     In some embodiments, the first user interface is updated in response to detecting the first input without providing, to the second display unit, information that enables the second user interface on the second display unit to be updated to enable display of the respective information about the second object in the second user interface. 
     In some embodiments, updating the first user interface on first display unit  1002  in accordance with the first input to enable display of respective information about the second object while display of the first object as the selected object in the second user interface is maintained includes updating the first user interface on first display unit  1002  in accordance with the first input to enable display of respective information about the second object while the entire second user interface is maintained on the second display unit as it was displayed immediately prior to detecting the first input. 
     In some embodiments, the plurality of selectable objects correspond to a plurality of map locations, and the selected object corresponds to a currently selected destination. 
     In some embodiments, the plurality of selectable objects correspond to a plurality of navigation routes, and the selected object corresponds to a currently selected navigation route. 
     In some embodiments, the plurality of selectable objects correspond to a plurality of content items that can be played with first electronic device  1000 , and the selected object corresponds to a currently selected content item. 
     In some embodiments, the plurality of selectable objects correspond to a plurality of applications, and the selected object corresponds to a currently selected application. 
     In some embodiments, the plurality of selectable objects correspond to a plurality of search results produced in response to a search query, and the selected object corresponds to a currently selected search result. 
     In some embodiments, the first object was automatically selected as the selected object based on predefined object selection criteria. 
     In some embodiments, prior to detecting the first input, the first user interface is synchronized with the second user interface; after responding to the first input and prior to detecting the second input, the first user interface is not synchronized with the second user interface; and after responding to the second input, the first user interface is synchronized with the second user interface. 
     In some embodiments, processing unit  1008  is configured to: after providing the information that enables the second user interface on the second display unit to be updated to enable display of the second object as the selected object instead of the first object, enter (e.g., with synchronization unit  1016 ) a display synchronization mode; and while in the display synchronization mode: periodically update (e.g., with updating unit  1012 ) the first user interface over time; and provide (e.g., with providing unit  1014 ) information that enables the second user interface on the second display unit to be synchronized with the first user interface as the first user interface is updated over time. 
     In some embodiments, the second electronic device controls an in-vehicle entertainment system with a native graphical user interface, and the second user interface is displayed on the second display unit instead of at least a portion of the native graphical user interface of the second electronic device. 
     In some embodiments, processing unit  1008  is configured to: receive (e.g., with receiving unit  1018 ) information that corresponds to a respective input from a control of the in-vehicle entertainment system; and in response to receiving the information that corresponds to the respective input, update (e.g., with updating unit  1012 ) the first user interface and the second user interface in accordance with the respective input. 
     In accordance with some embodiments,  FIG. 11  shows a functional block diagram of a portable electronic device  1100  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 11  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 11 , a portable electronic device  1100  includes a portable device display unit  1102  configured to display a portable-device navigation interface, a communications interface unit  1104  configured to communicate with a vehicle display unit of a vehicle, and, optionally, a touch-sensitive surface unit  1106  configured to receive one or more touch inputs; and a processing unit  1108  coupled to portable-device display unit  1102 , communications interface unit  1104 , and, optionally, touch-sensitive surface unit  1106 . In some embodiments, processing unit  1108  includes an obtaining unit  1110 , a display enabling unit  1112 , a sending unit  1114 , a detecting unit  1116 , and an updating unit  1118 . 
     Processing unit  1108  is configured to: obtain (e.g., with obtaining unit  1110 ) a set of map search results that includes a plurality of candidate destinations; enable display (e.g., with display enabling unit  1112 ) of the portable-device navigation interface on portable-device display unit  1102 , where the portable-device navigation interface enables selection of a destination from the plurality of candidate destinations; and send (e.g., with sending unit  1114 ) information to the vehicle display unit that enables the vehicle display unit to enable display of the vehicle navigation interface, where a first destination of the plurality of candidate destinations is a selected destination in the vehicle navigation interface. While the first destination is the selected destination in the vehicle navigation interface, processing unit  1108  is also configured to: detect (e.g., with detecting unit  1116 ) a first input from a user that corresponds to a request to enable display of information about one or more candidate destinations in the plurality of candidate destinations other than the first destination; in response to detecting the first input, update (e.g., with updating unit  1118 ) the portable-device navigation interface on portable-device display unit  1102  in accordance with the first input without the vehicle navigation interface on the vehicle display unit being updated; and after updating the portable-device navigation interface in accordance with the first input, detect (e.g., with detecting unit  1116 ) a second input from a user that corresponds to a request to select a second destination in the plurality of candidate destinations as the selected destination. 
     In accordance with some embodiments,  FIG. 12  shows a functional block diagram of a portable electronic device  1200  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 12  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 12 , an electronic device  1200  includes a communications interface unit  1202  configured to communicate with a plurality of displays that include a first display and a second display. In some embodiments, electronic device  1200  also, optionally, includes a display unit  1204  configured to display a user interface and a touch-sensitive surface unit  1206  configured to one or more receive touch inputs. Electronic device  1200  further includes a processing unit  1208  coupled to communications interface unit  1202 , and, optionally, coupled to display unit  1204  and touch-sensitive surface unit  1206 . In some embodiments, processing unit  1208  includes a receiving unit  1210 , a selecting unit  1212 , a sending unit  1214 , a generating unit  1216 , a determining unit  1218 , an updating unit  1220 , a detecting unit  1222 , and a mapping update unit  1224 . 
     Processing unit  1208  is configured to receive (e.g., with receiving unit  1210 ) a first input information that is indicative of a first input detected by a first input source of a plurality of input sources, where the first input information includes: a first identifier for the first input source; and a first input description that describes the first input. Processing unit  1208  is also configured to select (e.g., with selecting unit  1212 ) a first affected display from the plurality of displays based on the first identifier and an input-source mapping that maps input sources to corresponding displays. Processing unit  1208  is further configured to send (e.g., with sending unit  1214 ), to the first affected display, update information that enables the first affected display to be updated in accordance with the first input. 
     In some embodiments, selecting the first affected display includes: in accordance with a determination that the first input source is assigned to the first display in the input-source mapping, selecting (e.g., with selecting unit  1212 ) the first display as the first affected display that is affected by the first input; and in accordance with a determination that the first input source is assigned to the second display, different from the first display, in the input-source mapping, selecting (e.g., with selecting unit  1212 ) the second display as the first affected display that is affected by the first input. 
     In some embodiments, the update information includes information corresponding to the first input. 
     In some embodiments, the update information includes an updated user interface for display at the first affected display. 
     In some embodiments, the device generates user interfaces for two or more displays of the plurality of displays and provides respective user interfaces to corresponding displays. 
     In some embodiments, prior to sending the update information to the first affected display, processing unit  1208  is configured to generate (e.g., with generating unit  1216 ) the update information based on the first input information, where: in accordance with a determination that the first input description describes first input properties, processing unit  1208  is configured to generate (e.g., with generating unit  1216 ) first update information; and in accordance with a determination that the first input description describes second input properties different from the first input properties, processing unit  1208  is configured to generate (e.g., with generating unit  1216 ) second update information different from the first update information. 
     In some embodiments, after selecting the first affected display, processing unit  1208  is configured to: determine (e.g., with determining unit  1218 ) a respective state of a user interface displayed on the first affected display; and generate (e.g., with generating unit  1216 ) the update information based on the first input description and the respective state of the user interface displayed on the first affected display. 
     In some embodiments, in accordance with a determination that the respective state of the user interface displayed on the first affected display is a first state, the update information corresponds to performing a first operation for the respective state of the user interface displayed on the first affected display; and in accordance with a determination that the respective state of the user interface displayed on the first affected display is a second state different from the first state, the update information corresponds to performing a second operation, different from the first operation, for the respective state of the user interface displayed on the first affected display. 
     In some embodiments, prior to receiving the first input information, the respective user interface has a prior state; and processing unit  1208  is configured to update (e.g., with updating unit  1220 ) the user interface to an updated state that is different from the prior state based on the first input and the prior state of the respective user interface. 
     In some embodiments, processing unit  1208  is configured to: detect (e.g., with detecting unit  1222 ) a change in availability of a respective display of the plurality of displays; and in response to detecting the change in availability of the respective display, update (e.g., with mapping update unit  1224 ) the input-source mapping to show the change in availability of the respective display. 
     In some embodiments, while a respective input source is assigned to the first display, processing unit  1208  is configured to detect (e.g., with detecting unit  1222 ) a change in display assignment for a respective input source of the plurality of input sources from the first display to the second display. And, in response to detecting the change in display assignment for the respective input source, processing unit  1208  is configured to update (e.g., with mapping update unit  1224 ) the input-source mapping to show the change in display assignment for the respective input source, so that input information that is indicative of inputs associated with the respective input source is used to update a user interface displayed on the second display instead of being used to update a user interface displayed on the first display. 
     In some embodiments, after sending the update information that enables the first affected display to be updated in accordance with the first input, processing unit  1208  is configured to receive (e.g., with receiving unit  1210 ) second input information that is indicative of a second input detected by a second input source of the plurality of input sources distinct from the first input source, where the second input information includes: a second identifier for the second input source; and a second input description that describes the second input. Processing unit  1208  is also configured to: select (e.g., with selecting unit  1212 ) a second affected display from the plurality of displays based on the second identifier and the input-source mapping; and send (e.g., with sending unit  1214 ), to the second affected display, update information that enables the second affected display to be updated in accordance with the second input. 
     The operations in the information processing methods described above are, optionally, implemented by running one or more functional modules in information processing apparatus such as general purpose processors (e.g., as described above with respect to  FIGS. 1A and 3 ) or application specific chips. 
     The operations described above with reference to  FIGS. 7A-7D, 8A-8B, and 9A-9C  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIGS. 10-12 . For example, displaying operation  702 , receiving operation  722 , detecting operations  730  and  738 , updating operation  742 , obtaining operation  802 , sending operations  806  and  820 , detecting operations  810  and  814 , updating operations  812  and  818 , receiving operations  902  and  928 , identifying operations  904  and  930 , sending operations  918  and  932 , and/or detecting operations  934  and  936  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best use the invention and various described embodiments with various modifications as are suited to the particular use contemplated.