Patent Publication Number: US-2016231772-A1

Title: Wearable electronic device and touch operation method

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Application No. 62/113,603 filed on Feb. 9, 2015, the entirety of which is incorporated by reference herein. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The disclosure generally relates to a wearable electronic device, and more particularly, to a touch operation method for controlling the operation of a wearable electronic device. 
     2. Description of the Related Art 
     Wearable electronic devices which provide functions such as communication, gaming and photography are getting more popular nowadays. A wearable electronic device may use a communication network to communicate with other electronic devices, for example, to initiate another electronic device, access remotely-stored data, or provide locally-stored data. However, due to the limited display area and limited volume of the wearable electronic device, it is not convenient for users to utilize certain functions such as communication, gaming and photography on the wearable electronic device. Therefore, an efficient and user-friendly touch operation method for the wearable electronic device is needed. 
     BRIEF SUMMARY OF THE INVENTION 
     The disclosure proposes a touch operation method for controlling a wearable electronic device. The touch operation method can sense one or more touch events on the touch display panel and/or the touch bezel to control the wearable electronic device. The touch operation method can solve the aforementioned problem. 
     In one aspect of the disclosure, a wearable electronic device is provided. The wearable electronic device includes a touch display panel, a touch bezel and a processor. The touch display panel is configured to sense at least one first touch event and display content. The touch bezel is disposed around the touch display panel and configures to sense at least one second touch event. The processor is configured to generate at least one control signal according to a combination of at least scenario occurring on the touch display panel and the at least one second touch event occurring on the touch bezel, and control the wearable electronic device to perform at least one operation in response to the at least one control signal. 
     In some embodiments, at least one scenario occurring on the touch display panel comprises the at least one first touch event occurring on the touch display panel. In some other embodiments, the at least one scenario occurring on the touch display panel comprises a content currently displayed on the touch display panel. 
     In some embodiments of the disclosure, in controlling the wearable electronic device to perform the at least one operation in response to the at least one control signal, the processor determines a content subsequently displayed on the touch display panel according to the combination of the at least one first touch event and the at least one second touch event. 
     In some embodiments of the disclosure, the combination of the at least one first touch event and the at least one second touch event comprises the at least one first touch event and the at least one second touch event occurring simultaneously. In other embodiments, the combination of the at least one first touch event and the at least one second touch event comprises the at least one first touch event and the at least one second touch event occurring sequentially. 
     In some embodiments of the disclosure, in generating the at least one control signal according to the combination of the at least one first touch event and the at least one second touch event, the processor determines a first gesture according to the at least one first touch event and determines a second gesture according to the at least one second touch event, and generates the at least one control signal according to a combination of the first gesture and the second gesture. In other embodiments, in generating the at least one control signal according to the combination of the at least one first touch event and the at least one second touch event, the processor determines a gesture according to a combination of the at least one first touch event and the at least one second touch event, and generates the at least one control signal according to the gesture. 
     Moreover, in the embodiments, in generating the at least one control signal according to the combination of the at least one first touch event and the at least one second touch event, the processor generates the at least one control signal further according to at least one of a currently-executed application and/or a currently-occurring scenario and a detection of whether a right hand or a left hand is holding the wearable electronic device, and the at least one currently-occurring scenario comprises a content currently displayed by the touch display panel. 
     In some embodiments of the disclosure, the processor further judges whether a predetermined unlocking condition is met by the combination of the at least one first touch event and the at least one second touch event, and when the predetermined unlocking condition is met, the processor generates the at least one control signal for unlocking another device. 
     In some embodiments, the at least one second touch event comprise a combination of at least one first sub-touch event occurring on a first portion of the touch bezel and at least one second sub-touch event occurring on a second portion of the touch bezel, and the at least one operation comprises texting, zooming, rotating and/or scrolling. 
     In another aspect of the disclosure, a touch operation method for a wearable electronic device is provided. The touch operation method includes sensing at least one first touch events and displaying a content by a touch display panel; sensing at least one second touch event by a touch bezel which is disposed around the touch display panel; generating at least one control signal according to at least one scenario occurring on the touch display panel and the at least one second touch event by a processor; and controlling the wearable electronic device to perform at least one operation in response to the at least one control signal by the processor. 
     In the embodiments, since the touch bezel provides one or more extra touch areas, users can access the wearable electronic device more easily and conventionally. In addition, at least one scenario occurring on the touch display panel and at least one touch event occurring on the touch bezel can be considered in a combined way to determine a corresponding operation of the wearable electronic device. In other words, the touch bezel and the touch display panel can operate in a more integrated way, thus allowing users to operate the wearable electronic device in a more intuitive, fluent, and elegant way. Furthermore, the touch bezel and the touch display panel can be physically integrated to have a more integrated and hence stylish appearance. 
     In another aspect of the disclosure, a mobile electronic device is provided, comprising: a display panel, configured to display contents; a processor, configured to detect whether a right hand or left hand is wearing/holding the mobile electronic device and provide different provide different user interfaces for the same functionality when a right hand or left hand is detected to wear/hold the mobile electronic device, wherein the different user interfaces for the same functionality comprise different contents for the same functionality displayed on the display panel. 
     In one embodiment, the different contents for the same functionality displayed on the display panel comprise at least one partial content for the same functionality displayed closer to one side of the display panel when a right hand is detected to wear/hold the mobile electronic device and one opposite side of the display panel when a left hand is detected to wear/hold the mobile electronic device. 
     A detailed description is given in the following embodiments with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein: 
         FIG. 1  is a schematic diagram illustrating the appearance of the wearable electronic device according to an embodiment of the invention; 
         FIG. 2A  is a schematic diagram illustrating the appearance of a wearable electronic device according to an embodiment of the invention: 
         FIG. 2B  is another schematic diagram illustrating the appearance of a wearable electronic device according to an embodiment of the invention: 
         FIG. 3  is a schematic diagram illustrating a detailed structure of a wearable electronic device according to an embodiment of the invention: 
         FIG. 4A  is a schematic diagram illustrating a security application for a wearable electronic device according to one embodiment; 
         FIG. 4B  is a diagram showing an example unlocking operation corresponding to  FIG. 4A ; 
         FIG. 5  is a schematic diagram illustrating a texting operation for a wearable electronic device according to some embodiments; 
         FIG. 6  is a flowchart illustrating another touch operation method for controlling a wearable electronic device according to an embodiment of the invention: 
         FIG. 7A  to  FIG. 7E  are schematic diagrams illustrating various kinds of gestures for a wearable electronic device according to some embodiments of the invention; 
         FIG. 8  is a schematic diagram illustrating a texting operation for a wearable electronic device according to some embodiments: 
         FIG. 9A  is a schematic diagram illustrating another texting operation for a wearable electronic device according to other embodiments; 
         FIGS. 9B and 9C  are diagrams showing different example texting operations performed corresponding to  FIG. 9A ; 
         FIG. 10  is a flowchart illustrating another touch operation method for controlling a wearable electronic device according to an embodiment of the invention; and 
         FIGS. 11A and 11B  an example diagram of a mobile electronic device according to an embodiment, illustrating that different user interfaces provided when different hands are holding/wearing the mobile electronic device. 
     
    
    
     Corresponding numerals and symbols in the different figures generally refer to corresponding parts unless otherwise indicated. The figures are drawn to clearly illustrate the relevant aspects of the embodiments and are not necessarily drawn to scale. 
     DETAILED DESCRIPTION OF THE INVENTION 
     The following description is of the best-contemplated operation of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. Certain terms and figures are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This document does not intend to distinguish between components that differ in name but not function. The terms “component”. “system” and “device” used in the present invention could be the entity relating to the computer which is hardware, software, or a combination of hardware and software. Accordingly, when one device is coupled to another device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections. 
     In embodiments of the disclosure, a touch bezel and a touch display panel  120  can be utilized in combination. More specifically, at least one scenario occurring on the touch display panel and at least one touch event occurring on the touch bezel can be considered in a combined way to determine a corresponding operation of the wearable electronic device. For example, in some of the embodiments, the wearable electronic device  10  can have an operation corresponding to a combination of at least one first touch event occurring on the touch display panel  120  and at least one second touch event occurring on the touch bezel. In some other embodiments of the embodiments, the wearable electronic device  10  can have an operation corresponding to a combination of at least one touch event occurring on the touch bezel  110  and content currently displayed on the touch display panel  120 . Accordingly, the touch bezel  110  and the touch display panel  120  can operate in a more integrated way. 
       FIG. 1  is a schematic diagram illustrating the appearance of the wearable electronic device  10  according to an embodiment of the invention. The wearable electronic device  10  is suitable to be worn on the user&#39;s body, such as wrist or head. As an example, the wearable electronic device  10  is shown as a wristband in the embodiment of  FIG. 1 , but the disclosure is not limited thereto. For example, the wearable electronic device  10  can be any other type of wearable device, such as glasses, watches, sports accessories, etc. The wearable electronic device  10  may perform various functions related to techniques, methods and systems described in different embodiments of the disclosure. 
     As shown in  FIG. 1 , the wearable electronic device  10  can include a touch bezel  110  and a touch display panel  120  around which the touch bezel  110  is disposed. It is noted in the embodiments and in other embodiments of the disclosure, the touch bezel  110  can be any shape in different designs. The touch display panel  120  is configured to display content which may be provided by a processor. Specifically, the touch display panel  120  can be configured to display information content to be provided by the wearable electronic device  10  and/or any messages or contents that can enable operation, communication, or interaction by the user with the wearable electronic device  10 . 
     In addition, the touch display panel is also configured to sense at least one first touch event. In other words, the touch display panel  120  can be a touch-sensitive display that can not only output information to the user but can also receive input from the user. For example, the touch display panel  120  could include a resistive touch panel, a capacitive touch panel, an optical touch panel or an electromagnetic touch panel. In some implications, at least one touch sensor could be arranged within the touch bezel  110  to detect the touch input from the user. For example, the touch sensor could be a resistive touch sensor, a capacitive touch sensor, an optical touch sensor or an electromagnetic touch sensor. 
     As will be described in embodiments below, the touch bezel  110  and the touch display panel  120  can be utilized in combination. More specifically, in some embodiments, the wearable electronic device  10  can have an operation corresponding to a combination of at least one first touch event occurring on the touch display panel  120  and at least one second touch event occurring on the touch bezel. In other embodiments, the wearable electronic device  10  can have an operation corresponding to a combination of at least one touch event occurring on the touch bezel  110  and content currently displayed on the touch display panel  120 . In the embodiments, the touch bezel  110  and the touch display panel  120  can operate in a more integrated way. 
     In addition, according to design requirement, the touch bezel  110  and the touch display panel  120  can be separate components, or alternatively, they can be designed to have an integrated appearance. In other words, the touch bezel  110  and the touch display panel  120  can be more integrated in both operation and appearance. 
     Moreover, the wearable electronic device  10  can be connected to at least one supporting component  20 . For example, the supporting component  20  could be a spire lamella as shown in  FIG. 1 . The supporting component  20  may provide a mechanical function such as supporting and/or connecting different components of the wearable electronic device  10 . In addition, the supporting component  20  may provide a decorative or ornamental function. In different embodiments, the supporting component  20  includes a housing, a casing, a band, and/or a covering of the wearable electronic device  10 . It is noted that the touch bezel  110 , the touch display panel  120 , and the at least one supporting component  20  can be designed as separate components, or alternatively, integrated at least partially. For example, the touch bezel  110  can be integrated with the housing, the casing or the covering. In other words, the term “touch bezel” may mean at least one of the bezel, the housing, the casing, the band and/or the covering of the wearable electronic device  10  having sensing ability. 
     Additionally, one or more environment detection components could be arranged within the wearable electronic device  10  or the supporting component  20 . The environment detection component can include at least one image-capture device, a sensor (such as light sensor or color sensor, a temperature sensor, a humidity sensor), an barometer, an antenna, a GPS receiver, a wireless communication transceiver, a haptic device, an accelerometer, a speedometer, a health monitor, and/or any hardware/software device/module (a database or an application) capable of fetching or providing any environmental information, e.g., current time/date/location/temperature information. 
       FIG. 2A  is a schematic diagram illustrating the appearance of the wearable electronic device  10  according to an embodiment of the invention. In some embodiments, the touch bezel  110  includes two sub-touch bezels  110 A and  110 B. As shown in  FIG. 2A , the sub-touch bezel  110 A is approximately on the same plane as the touch display panel  120 . The sub-touch bezel  110 A is arranged on a plane which is different from the plane of the sub-touch bezel  110 B. For example, the plane on which the sub-touch bezel  110 B is arranged is perpendicular to the plane on which the sub-touch bezel  110 A is arranged. In other words, from the point of view of the user, the sub-touch bezel  110 A is located on the front side of the wearable electronic device  10 , and the sub-touch bezel  110 B is located on the lateral side or flanking side of the wearable electronic device  10 . Various kinds of touch events could be conducted by the user through the sub-touch bezels  110 A and  110 B which are arranged in different positions of the wearable electronic device  10 . Therefore, a user-friendly wearable electronic device  10  could be provided for users. 
     Specifically, in the embodiments of  FIG. 2A , the user can operate the wearable electronic device  10  by touching the sub-touch bezel  110 B on the lateral side. Because the touch bezel  110  could be arranged not only in two-dimensions but also in three-dimensions as shown in  FIG. 2A , the user interface of the wearable electronic device  10  could be designed with more possibilities and could be more user-friendly. For example, the sub-touch bezel  110 B could be touched by the thumb of the user to initiate a software application, and the sub-touch bezel  110 A could be touched by the forefinger of the user to operate the software application accordingly. 
     It should be noted that the areas and shapes of the sub-touch bezels  110 A and  110 B could be changed for various kinds of designs of the wearable electronic devices  10 .  FIG. 2B  is another schematic diagram illustrating the appearance of the wearable electronic device  10  according to an embodiment of the invention. In this embodiment of  FIG. 2B , the sub-touch bezel  110 B is provided without arranging the sub-touch bezel  110 A. Since no area is occupied by the sub-touch bezel  110 A, the touch display panel  120  could have a large area for displaying much content. 
       FIG. 3  is a schematic diagram illustrating a detailed structure of a wearable electronic device according to an embodiment of the invention.  FIG. 3  may be applied in the embodiments through the disclosure but is not limited thereto. Since the embodiment of  FIG. 3  can be implemented in the wearable electronic device  10  in  FIG. 1 , it is explained below using the same reference numbers used in  FIG. 1  for convenience of explanation. 
     In some embodiments, the wearable electronic device  10  includes a touch bezel  110 , a touch display panel  120 , a processor  130 . In addition, the wearable electronic device  10  can further include a memory  140  and a communicator  150 . Although the touch bezel  110 , the touch display panel  120 , the processor  130 , the memory  140  and the communicator  150  are illustrated as discrete components separate from each other, in various implementations of the wearable electronic device, at least some of these components may be integral parts of a single IC, chip or chipset. 
     The touch display panel  120  is configured to sense at least one first touch event and display content. The touch bezel  110  is disposed around the touch display panel  120  and is configured to sense at least one second touch event. The processor  130  is configured to generate at least one control signal according to a combination of at least one scenario and the second touch event, and control the wearable electronic device  10  to perform at least one operation in response to the control signal. The at least one scenario occurring on the touch display panel may include either or both of the at least one first touch event occurring on the touch display panel and a content currently displayed on the touch display panel. In some embodiments, in controlling the wearable electronic device  10  to perform at least one operation, the processor  130  can determine content subsequently displayed on the touch display panel  120  according to the combination of the first touch event and the second touch event and generates at least one control signal and generate at least one control signal based on the determination, e.g., for controlling the touch display panel  120  to display the determined content. In addition, the operation performed by the wearable electronic device  10  includes texting, zooming, rotating and/or scrolling. Because the scenario on the touch display panel  120  and the touch event on the touch bezel  110  can be considered in combination by the processor  130 , the touch display panel  120  can operate in more integrated way, as will be explained more below. 
     Furthermore, the processor  130  could include a digital signal processor (DSP), a microcontroller (MCU), a central-processing unit (CPU) or a plurality of parallel processors relating the parallel processing environment to implement the operating system (OS), firmware, driver and/or other software applications of the wearable electronic device  10 . 
     The memory  140  is utilized to store data generated when the wearable electronic device is operated such as texting. The memory  140  could include one or a plurality of a random access memory (RAM), a read-only memory (ROM), a flash memory or a magnetic memory. In addition, the communicator  150  is utilized to transmit data to other electronic devices and receive data from other electronic devices based on wireless communication protocols. The wireless communication protocol of the wearable electronic device  10  could constitute GSM. GPRS, EDGE, UMTS, W-CDMA, CDMA2000. TD-CDMA, Bluetooth, NFC, WiFi, WiMAX, LTE, LTE-A or TD-LTE. 
     In embodiments where the first touch event is considered as the scenario occurring on the touch display panel  120 , the first touch event and the second touch event could occur simultaneously or sequentially. In other words, the first and second touch events occurring at the same or different times can be considered in combination. 
     In addition, in different embodiments, in generating at least one control signal according to a combination of the first touch event and the second touch event, the first touch event and the second touch event can be combined in different stages and forms. For example, the combination can occur before gestures are respectively identified for the first touch event and the second touch event. Alternatively, the combination can occur after the first and second events are considered in combination to identify a gesture. The gesture can be single or multi-touch gestures such as tape, click, scroll, drag, select, zoom, rotate, panning, and etc, as required by designs. 
     More specifically, in one embodiment, the processor  130  can determine a first gesture according to the first touch event and determines a second gesture according to the second touch event, and generates the control signal according to a combination of the first gesture and the second gesture. For example, a press on the touch display panel  120  and a rotate on the touch bezel  110  can be considered in combination to determine a corresponding operation of the wearable electronic device. 
     In another embodiment, the processor  130  determines a gesture according to a combination of the first touch event and the second touch event, and generates the control signal according to the gesture. For example, relative movements of touches simultaneously on the touch bezel  110  and the touch display panel  120  can be identified to be a specific gesture. Or the first and second touch events sequentially occur to across the touch bezel  110  and the touch display panel  120  can be identified to be a specific gesture. 
     In some embodiments, the processor  130  generates the at least one control signal according to a combination of a touched region where the at least one first touch event occurs on the touch display region  120  and one or more rotations in the at least one second touch event occurring on the touch bezel  110 . The processor  130  may further judges whether a predetermined condition is met according to the combination to control the wearable electronic device to perform a corresponding operation. For example, the processor  130  can judges whether a predetermined unlocking condition is met by the combination of the at least one first touch event and the at least one second touch event according to the detections. When the predetermined unlocking condition is met, the processor generates the at least one control signal for unlocking another device, as explained in  FIG. 4 . 
       FIG. 4A  is a schematic diagram illustrating a security application of a wearable electronic device according to an embodiment. Since the embodiment of  FIG. 4A  can be implemented in the wearable electronic device of  FIG. 1 , it is explained below using the same reference numbers used in  FIG. 1  for convenience of explanation but the disclosure it not limited thereto. 
     Compared with other kinds of electronic devices, the wearable electronic device  10  is closer to human body and is more privacy. As such, the wearable electronic device  10  could be a personal electrical key to unlock itself or unlock other electronic devices to improve the security. In some embodiments, the security application could be initiated by conducting the first touch event on the touch display panel  120  and the second touch event on the touch bezel  110  at the same time. Accordingly, the unlocking content of the security application could be displayed on the touch display panel as shown in  FIG. 4 . In the embodiment, after the processor  130  judges a predetermined unlocking condition is met, the processor  130  can generate a control signal for unlocking another electronic device or unlocking the wearable electronic device  10  by itself. The predetermined unlocking condition can include a series of numbers defined by the user. 
     In the embodiment of  FIG. 4A , the unlocking can be performed by a sequence of rotating gestures representing the second touch event on the touch bezel  110 .  FIG. 4B  is a diagram showing example unlocking operation. More specifically, when the user utilizes the security application, he may input multiple numbers in sequence to the wearable electronic device  10  by performing a sequence of rotations on the touch bezel  110 . An indicator AX may be implemented to indicate a selected one of the numbers corresponding to each rotation in the second touch event. For example, the user can perform a clockwise rotation on the touch bezel  110  to increase the number for selection, and a counterclockwise wise rotation on the touch bezel  110  to decrease the number for selection. In some implementations, a press (by a thumb for example) can be required to be maintained on the touch display panel  120  during the rotations to imitate a typical unlocking action. Moreover, once a number has been selected by the user, a click or any gesture on either the touch display panel  120  (another first touch event) or the touch bezel  110  could be conducted to confirm the chosen number. 
     When each of the chosen numbers input by the user have met the predetermined unlocking condition, a control signal will be generated by the processor  130  to unlock the wearable electronic device  20  or to unlock other electronic devices. In brief, the unlocking can be performed by a sequence of rotating gestures on the touch bezel  110  in combination of a press maintained and/or a confirmation click on the touch display panel  120 . Since the rotation does not leave any finger prints on the touch display panel  120 , the security could be further improved. Therefore, an easy-accessing and reliable security application could be provided by the wearable electronic device  10  of the embodiment. 
     In some embodiments, a selection with respect to a displayed content can be performed by considering a combination of first touch event occurring on the touch display panel  110  and the touch bezel  120 . This may used for realizing a texting operation. For example, a plurality of groups of characters can be displayed respectively on a plurality of portions on the touch display panel. The first touch event may correspond to a preliminary selection to select a group of characters the second touch event may correspond to a further selection to select one characters from the preliminarily selected group of characters. More specifically, And the processor  130  can generate the at least one control signal for selecting one character from the plurality of groups of characters according to a combination of a touched portion of the plurality of portions on the touch display panel  120  in the at least one first touch event on the touch display panel, and the at least one second touch event occurring on the touch bezel  130  for further selecting one character from the group of characters in the touched portion. 
       FIG. 5  is a schematic diagram illustrating a texting operation for the wearable electronic device according to some embodiments. Since the embodiment of  FIG. 5  can be implemented in the wearable electronic device of  FIG. 1 , it is explained below using the same reference numbers used in  FIG. 1  for convenience of explanation but the disclosure it not limited thereto. 
     When a plurality of characters are displayed on the touch display panel  120 , in response to at least one first touch event occurring on a first portion of the touch display panel  120 , the processor  130  determines which one or more characters among the characters are to be further selected. Moreover, in response to at least one second touch event occurring on a second portion of the touch bezel  110 , the processor  130  determines which one character among the characters on the touch display panel  120  is selected. Furthermore, when the touch bezel  110  senses the touch event occurring sequentially or simultaneously on at least one portion of the touch bezel  110 , the processor  130  determines to rotate, move, zoom in, zoom out, or scroll at least a portion of the content displayed on the touch display panel  120 . 
     As shown in  FIG. 5 , the characters A-Z are divided into four groups, and the four groups are displayed in four portions  105 C- 105 F along the four edge areas of the touch display panel  120 . It should be noted that the arrangement of the characters is for illustration, not for limitation. The characters could also be arranged in a circle or in an ellipse corresponding to the shape of the touch display panel and the user interface. In this embodiment, the touch bezel  110  includes four portions  110 C- 110 F corresponding to four portions  105 C- 105 F or the four groups of characters respectively. 
     In an example that the user wants to type “O”, the user can first conducts a touch event by touching the portion  105 E to select the group of the characters L-Q. Afterwards, the user could conduct another touch event on the touch bezel  120 , for example by moving his finger on the touch bezel  120 . To facilitate a further selection by the user, a corresponding character along with the moving by the user finger in the selected group of the characters L-Q can be rotated, scrolled or zoomed out on the touch display panel  110 . In one embodiment, a zoom out o is performed on the selected character SC and displayed in a specific region on the touch display panel  120  as shown. Moreover, once a character has been selected by the user, a click or any gesture on either the touch display panel  120  (another first touch event) or the touch bezel  110  could be conducted to confirm the chosen character. Consequently, a user-friendly texting method can be provided by the wearable electronic device  10  for texting characters (including either or both of alphabetic and numeric characters), and the messages from the user could be edited and transmitted more conveniently. 
       FIG. 6  is a flowchart illustrating a touch operation method for controlling a wearable electronic device  10  according to an embodiment of the invention. Although illustrated as discrete blocks, various blocks may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation.  FIG. 6  may be applied in the embodiments of  FIG. 1 - FIG. 5  but is not limited thereto. Since the embodiment of  FIG. 6  can be implemented in the wearable electronic device  10  in  FIG. 1 , it is explained below using reference numbers used in the embodiment of  FIG. 1  but is noted limited thereto. 
     In step S 602 , at least one first touch event is sensed and content is displayed on a touch display panel  120 . In step S 604 , at least one second touch event is sensed by a touch bezel  110  which is disposed around the touch display panel  120 . It should be noted that step S 602  and step S 604  could be executed simultaneously or sequentially. Afterwards, in step S 606 , at least one control signal is generated according to a combination of the first touch event and the second touch event by a processor  130 . In step S 608 , the wearable electronic device  10  is controlled to perform at least one operation in response to the control signal by the processor  130 . Details of each step may be analogized from the above embodiments, thus omitted here for brevity. Various kinds of operations have been illustrated and will not be repeated again. 
     In some embodiments where the content displayed on the touch display panel  120  is considered as the scenario occurring on the touch display panel  120 , the processor determines to rotate, move, zoom in, zoom out, or scroll at least first part of the content displayed on the touch display panel according to the combination of a second part of the content displayed on the touch display panel  120  and the at least one first touch event occurring on the touch bezel  110 . The at least first part of the content can be different from or the same as the at least one second part of the content. 
       FIG. 7A  to  FIG. 7E  are schematic diagrams illustrating various kinds of gestures for the wearable electronic device  10  according to some embodiments of the invention. 
     In the embodiment of  FIG. 7A , a touch event TE 1  is performed on the touch bezel  110 , including a clockwise or counter-clockwise movement along the touch bezel  110 . The processor  130  can then determine a gesture of scrolling and generate a control signal for controlling the touch display panel  120  to represent a scrolling operation on at least a part/an object of a currently-displayed content. 
     In the embodiments of  FIG. 7B  and  FIG. 7C , two touch events TE 1  and TE 2  are detected by the touch bezel, including a clockwise movement and a counterclockwise movement simultaneously occurring along the touch bezel  110 , and the other of the touch events TE 1  and TE 2  moves counter-clockwise along the touch bezel  110 . The processor  130  can then determine gestures of zooming-out and zooming-in and generate a control signal for controlling the touch display panel  120  to represent a zooming-out operation and zooming-in operation on at least a part/an object of a currently-displayed content  FIG. 7B  and  FIG. 7C , respectively. 
     In the embodiments of  FIG. 7D  and  FIG. 7E , two touch events TE 1  and TE 2  are detected by the touch bezel, including two clockwise movements in  FIG. 7D  or two counterclockwise movements in  FIG. 7E  simultaneously occurring along the touch bezel  110 . The processor  130  can then determine gestures of rotations and generate a control signal for controlling the touch display panel  120  to represent a switching-left operation and a switching-right operation on at least a part/an object of a currently-displayed content  FIG. 7D  and  FIG. 7E , respectively. 
     It should be noted that the same touch event could be determined to represent different gestures or lead to different operations in different conditions/embodiments. For example, the touch events TE 1  and TE 2  in  FIG. 7D  could trigger rotating operation in some conditions, and also or alternatively be determined to trigger scrolling operations in other conditions. The mapping relationship between the touch events, the gestures, and operations could be determined and adjusted by users. 
     Moreover, it should be noted that in some embodiments, the touch events TE 1  and TE 2  are conducted on different portions of the touch bezel  110  simultaneously or sequentially. In other words, the at least one second touch event could include a combination of at least one first sub-touch event TE 1  occurring on a first portion of the touch bezel  110  and at least one second sub-touch event TE 2  occurring on a second portion of the touch bezel  110 . 
     The sub-portions can be arranged in different places in different implementations. For example, in some embodiments as shown in  FIG. 2A , the first sub-touch event could be conducted on the sub-touch bezel  110 A, and the second sub-touch event could be conducted on the sub-touch bezel  110 B. Various kinds and combinations of touch events could be detected by the wearable electronic device  10  to execute many different operations. 
     The consideration of the combination of a scenario on the touch display panel  120  and the touch bezel  110  in determining a corresponding operation can be utilized to realize various functions of the wearable electronic device  10 , for example, a texting function. In one example implementation, a plurality of characters can be arranged to be displayed respectively on a plurality first sub-portions of the touch display panel  120 . At the same time, the processor  130  can determine to sequentially display one character of the characters according to a combination of a touched portion of a plurality second portions of the touch bezel in at least one second touch event occurring on the touch bezel and the character currently displayed on the first portion of the touch display panel corresponding to (e.g., closest to) the touched portion of the touch bezel, as will explained more in embodiment of  FIG. 8 . 
       FIG. 8  is a schematic diagram illustrating a texting operation for a wearable electronic device according to some embodiments.  FIG. 8  may be applied in the embodiments through the disclosure but is not limited thereto. Since the embodiment of  FIG. 8  can be implemented in the wearable electronic device  10  in  FIG. 1 , it is explained below using 
     In a non-limiting example that a user wants to make a phone call, a texting operation can be performed by the wearable electronic device  10  for inputting phone numbers. As exemplarily illustrated, the phone numbers displayed on the touch display panel  120  could be arranged in the shape of circle close to the touch bezel  110 , respectively in a plurality of portions of the touch display panel  120 . When the user touches a portion of the touch bezel  110  nearest a specific number, which means the touched portion of the touch bezel is the portion nearest the located portion of the specific number in the touch display panel  120 , causing a second touch event on the touch bezel  110  to occur, the specific number can be selected. With similar operations performed in a sequence, a sequence of number could be selected and input to the wearable electronic device  10 . 
     Moreover, after all of the phone numbers are input, either or both of a first touch event on the touch display panel  120  or another second touch event on the touch bezel can be conducted for confirming the input or making calling. For example, the user may click an icon BX on the touch display panel  120  to conduct the first touch event. In response, a calling operation can be determined by the processor  130  to be performed. With such an implementation, a user-friendly texting method can be provided by the wearable electronic device  10  to input phone number and make a phone call. 
     In another example implementation of texting, when a plurality of groups of characters are displayed respectively on a plurality of first portions on the touch display panel  120 , the processor  130  generates the at least one control signal for selecting one character from the plurality of groups of characters according to a combination of a touched portion of a plurality of second portions on the touch display panel  120  in the at least one first touch event on the touch display panel  120 , and the at least one second touch event occurring on the touch bezel  110  which are performed for further selecting one character from the group of characters in the second portion of the touch display panel  120  corresponding to (e.g., closest to) the touched portion of the touch bezel  110 , as will be explained more in the embodiment of  FIG. 9 . 
       FIG. 9A  is a schematic diagram illustrating a texting operation for the wearable electronic device according to some embodiments. Since the embodiment of  FIG. 5  can be implemented in the wearable electronic device of  FIG. 1 , it is explained below using the same reference numbers used in  FIG. 1  for convenience of explanation but the disclosure it not limited thereto. 
       FIG. 9A  differs from  FIG. 5  mainly in the selection in selecting the group of characters in the first step. Specifically, when a plurality of characters are displayed on the touch display panel  120 , in response to at least one second touch event occurring on a first portion of the touch bezel  110  rather than the first touch event occurring on a first portion of the touch display panel  120 , the processor  130  determines which one or more characters among the characters are to be further selected. 
     Moreover, similar to the embodiment of  FIG. 5 , in response to at least one second touch event occurring on a second portion of the touch bezel  110 , the processor  130  determines which one character among the characters on the touch display panel  120  is selected. In an example, in the first determination, the at least one second touch event occurring on the touch bezel  110  can include a touch on the touch bezel  110  by a finger, and in the second determination, the at least one second touch event occurring on the touch bezel  110  can include one or more different fingers moving (such as rotating or scrolling) on the touch bezel  110  as shown in  FIG. 9B . In another example, in the first determination, the at least one second touch event the touch bezel  110  can include a touch on the touch bezel  110  by a finger, and in the second determination, the at least one second touch event occurring on the touch bezel  110  can include the same finger moving on the touch bezel  110  as shown in  FIG. 9C . It can be required that the touch event in the second determination occur while the touch event in the first determination is still occurring. 
     When the touch bezel  110  senses the touch event occurring sequentially or simultaneously on at least one portion of the touch bezel  110 , the processor  130  determines to rotate, move, zoom in, zoom out, or scroll at least a portion of the content displayed on the touch display panel  120 . 
     It is noted that although the wearable electronic device  FIGS. 5 and 9A-9C  is shown as to have a rectangular shape, it can have different shapes in other embodiments. For example, in an embodiment, it is circular. In addition, it is not required to groups the characters in the two stages of character selection. Specifically, in the generating the at least one control signal according to the combination of at least one scenario occurring on the touch display panel and the at least one second touch event, the processor can preliminarily select one or more characters (e.g., ‘O’) based on either the first touch event or the second touch event on the touch display panel or the display bezel performed by a finger (e.g., index finger). The one or more preliminarily-selected characters may be characters closest to the at least one first/second touch event, or in any locations predetermined to correspond to the touched area. The processor can then confirms to select at least one character of the one or more preliminarily-selected characters based on the at least one second touch event on the touch display panel or the display bezel performed by the same finger or at least one different finger on the display bezel. To this end, the moving of the finger(s) on the display bezel can confirm the preliminarily-selected character to be selected, or cause another character to be selected (e.g., ‘Q’, ‘P’ for a first moving direction or ‘N’, ‘M’, ‘L’ for second moving direction). In addition, the selected character(s) may be displayed in different forms/places on the touch display panel. More other details can be referred to description for the embodiment of  FIG. 5 , thus omitted here for brevity. 
       FIG. 10  is a flowchart illustrating another touch operation method for controlling a wearable electronic device according to an embodiment of the invention. Although illustrated as discrete blocks, various blocks may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation.  FIG. 10  may be applied in the embodiments of  FIG. 7 - FIG. 9  but is not limited thereto. Since the embodiment of  FIG. 10  can be implemented in the wearable electronic device  10  in  FIG. 1 , it is explained below using reference numbers used in the embodiment of  FIG. 1  but is noted limited thereto. 
     In step S 1002 , at least one touch event is sensed by a touch bezel  110  which is disposed around the touch display panel. Afterwards, in step S 1004 , at least one control signal is generated according to the touch event and according to the content currently displayed on the touch display panel  120  by a processor  130 . In step S 1006 , the wearable electronic device  10  is controlled to perform at least one operation in response to the control signal by the processor  130 . Details of each step may be analogized from the above embodiments, thus omitted here for brevity. 
     It should be noted that in some embodiments, the processor  130  generates the control signal according to a currently-executed application. In other words, the scenario occurring on the touch display panel  120  combined with the same touch event on the touch bezel  110  may represent different gestures or lead to different operations under different applications. 
     In addition, the current scenario can include both of the first touch event on the touch display panel  120  and the content currently displayed by the touch display panel. For example, when the wearable electronic device  10  is running an application for previewing a photograph or for viewing a taken photograph, the content currently displayed on the touch display panel  120  can be a current image captured by an image sensor or a camera of the wearable electronic device  10  or a photo in an album. Under such application, the user could touch the touch display panel  120  (the first touch event) for selecting an object in the image (the currently-displayed content), and touch the touch bezel  110  for zooming-in or zooming-out (the second touch event) the selected object. The first touch event and the second touch event occur sequentially. Therefore, the operation of viewing pictures could be performed according to a combination of the first touch event and the second touch event and the content currently displayed by the touch display panel. 
     Additionally or alternatively, the processor  130  generates the control signal according to a detection of whether a right hand or a left hand is holding/wearing the wearable electronic device  10 . For example, for different hands detected to be holding/wearing the wearable electronic device, a user interface displayed on the touch display panel  120  can be shown differently to facilitate the operation of the detected hand. Alternatively and/or additionally, the touch event on the touch display panel  120  and/or the touch event on the touch bezel  110  required to trigger a specific operation of the wearable electronic device can be different when a different hand is detected to be holding the wearable electronic device  10 . For example, a clockwise rotation required to trigger an operation may be replaced by a counter-clockwise rotation to trigger the same operation for different hands. Or a touch event on the right side of the touch bezel  110  may be replaced by a touch event on the left side of the touch bezel  110  to trigger the same operation. 
       FIGS. 11A and 11B  an example diagram of a mobile electronic device  60  according to an embodiment, illustrating that different user interfaces provided when different hands are holding/wearing the mobile electronic device. The mobile electronic device  60  may be a tablet, a mobile phone, or a wearable electronic device. In addition, the mobile electronic device  60  includes a display panel and a processor. The display panel may be implemented as a touch display panel and configured to display contents. The processor is configured to detect whether a right hand or left hand is wearing/holding the mobile electronic device  60 , and provide different provide different user interfaces for the same functionality when a right hand or left hand is detected to wear/hold the mobile electronic device  60 . The different user interfaces for the same functionality comprise different contents for the same functionality displayed on the display panel. The different contents for the same functionality displayed on the display panel comprise at least one partial content for the same functionality displayed. The partial content P 1  may be closer to one side of the display panel when a right hand is detected to wear/hold the mobile electronic device  60  in  FIG. 11A , and closer to one opposite side of the display panel when a left hand is detected to wear/hold the mobile electronic device  60  in  FIG. 11B . 
     In the embodiments, since the touch bezel provides one or more extra touch areas, users can access the wearable electronic device more easily and conventionally. In addition, at least one scenario occurring on the touch display panel and at least one touch event occurring on the touch bezel can be considered in a combined way to determine a corresponding operation of the wearable electronic device. In other words, the touch bezel and the touch display panel can operate in a more integrated way, thus allowing users to operate the wearable electronic device in a more intuitive, fluent, and elegant way. Furthermore, the touch bezel and the touch display panel can be physically integrated to have a more integrated and hence stylish appearance. 
     Although embodiments of the present disclosure and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure as defined by the appended claims. As one of ordinary skill in the art will readily appreciate from the disclosure of the present disclosure, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present disclosure. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufactures, compositions of matter, means, methods, or steps.