PATENT DOCUMENT

Publication Number: US-11347351-B2
Application Number: US-202017118088-A
Country: US
Kind Code: B2

Title: Rejection of false turns of rotary inputs for electronic devices

Abstract:
Various embodiments for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices are disclosed herein. In one example, an electronic device is provided with an optical detector that measures the distance between the electronic device and the wearer&#39;s forearm or hand, and when the distance is smaller than a threshold distance, the turns of the rotary input are false, unintended turns. In another example, a crown of a rotary input includes a plurality of capacitive sensors that detects the presence of a wearer&#39;s finger, which when absent, the turns of the rotary input are false turns. In another example, deflections or positions of a shaft of the rotary input are measured and if the deflections/positions indicate an upward force on the rotary input (which are likely caused by the wearer&#39;s forearm or hand), the turns of the rotary input are false turns. Other embodiments are described herein.

Claims:
We claim: 
     
       1. An electronic watch comprising:
 a display; 
 a housing at least partially surrounding the display; 
 a processor positioned within the housing; and 
 a crown positioned along a side of the housing, the crown comprising an array of sensors positioned along a periphery of an external surface of the crown and operably coupled to the processor, the array of sensors operable to detect a position of a touch at the external surface. 
 
     
     
       2. The electronic watch of  claim 1 , wherein:
 the crown comprises a shaft that extends into an interior of the housing; and 
 the electronic watch further comprises a rotational sensor that is configured to detect a rotation of the crown. 
 
     
     
       3. The electronic watch of  claim 2 , wherein the rotational sensor is an optical sensor that is configured to detect the rotation of the crown using reflected light. 
     
     
       4. The electronic watch of  claim 1 , wherein the electronic watch is configured to determine if the position of the touch is along a top region or a bottom region of the external surface. 
     
     
       5. The electronic watch of  claim 4 , wherein:
 in response to the touch being along the top region of the external surface, the electronic watch is configured to accept input from the crown; and 
 in response to the touch being along the bottom region of the external surface, the electronic watch is configured to reject input from the crown. 
 
     
     
       6. The electronic watch of  claim 4 , wherein the bottom region of the external surface is proximate to a wrist of a user when the electronic watch is worn. 
     
     
       7. The electronic watch of  claim 1 , wherein the electronic watch is configured to reject an input to the crown unless the touch is detected by the array of sensors. 
     
     
       8. A wearable electronic device comprising:
 a housing; 
 a band coupled to the housing and configured to attach the wearable electronic device to a wrist; 
 a display positioned at least partially within the housing; and 
 a crown comprising:
 a dial positioned along a side of the housing; and 
 an array of sensors positioned along an exterior of the dial and configured to detect a location of a touch on the dial. 
 
 
     
     
       9. The wearable electronic device of  claim 8 , wherein the display is configured to scroll displayed contents in response to an input provided to the crown. 
     
     
       10. The wearable electronic device of  claim 8 , wherein the wearable electronic device is configured to determine whether the location is along a top or a bottom of the dial. 
     
     
       11. The wearable electronic device of  claim 10 , wherein:
 the wearable electronic device is configured to accept a crown input in response to a determination that the location is along the top of the dial; and 
 the wearable electronic device is configured to reject the crown input in response to a determination that the location is along the bottom of the dial. 
 
     
     
       12. The wearable electronic device of  claim 8 , wherein:
 the wearable electronic device is configured to detect a contact with the wrist using the array of sensors; and 
 the wearable electronic device is configured to reject a crown input in response to detecting the contact with the wrist. 
 
     
     
       13. The wearable electronic device of  claim 8 , wherein the array of sensors is an array of capacitive sensors operable to detect capacitive coupling between the crown and an external object. 
     
     
       14. The wearable electronic device of  claim 13 , wherein:
 the wearable electronic device is configured to detect a local capacitance maximum using the array of capacitive sensors; and 
 in response to detecting the local capacitance maximum, accept an input from the crown. 
 
     
     
       15. The wearable electronic device of  claim 8 , wherein:
 the wearable electronic device further comprises an optical sensor; and 
 the optical sensor is configured to detect a rotational input provided to the crown. 
 
     
     
       16. An electronic watch comprising:
 a housing; 
 a touch screen positioned at least partially within the housing; 
 a processor positioned within the housing; and 
 a crown positioned along a side of the housing, the crown comprising an array of capacitive sensors positioned along a periphery of the crown and operably coupled to the processor, the electronic watch configured to detect a location of a touch along the crown using the array of capacitive sensors. 
 
     
     
       17. The electronic watch of  claim 16 , wherein the electronic watch is configured to ignore an input to the crown in response to a determination that the touch is not detected. 
     
     
       18. The electronic watch of  claim 17 , wherein:
 the electronic watch is configured to enter a sleep mode; 
 a graphical output is not displayed on the touch screen when the electronic watch is in the sleep mode; and 
 the electronic watch is configured to transition from the sleep mode to an operational mode in response to accepting the input. 
 
     
     
       19. The electronic watch of  claim 16 , wherein the electronic watch comprises a rotation sensor configured to detect rotational input provided to the crown. 
     
     
       20. The electronic watch of  claim 19 , wherein:
 the electronic watch is configured to disregard the rotational input unless the location of the touch is along a top region of the crown; and 
 in response to disregarding the rotational input, the electronic watch is configured to maintain a static display on the touch screen.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation patent application of U.S. patent application Ser. No. 16/840,336, filed Apr. 4, 2020, and titled “Rejection of False Turns of Rotary Inputs for Electronic Devices,” which is a continuation patent application of U.S. patent application Ser. No. 16/262,728, filed Jan. 30, 2019, and titled “Rejection of False Turns of Rotary Inputs for Electronic Devices,” now U.S. Pat. No. 10,613,685, issued Apr. 7, 2020, which is a continuation patent application of U.S. patent application Ser. No. 16/048,081, filed Jul. 27, 2018 and titled “Rejection of False Turns of Rotary Inputs for Electronic Devices,” now U.S. Pat. No. 10,222,909, issued Mar. 5, 2019, which is a continuation patent application of U.S. patent application Ser. No. 15/117,819, filed Aug. 10, 2016 and titled “Rejection of False Turns of Rotary Inputs for Electronic Devices,” now U.S. Pat. No. 10,048,802, issued Aug. 14, 2018, which is a 35 U.S.C. § 371 application of PCT Patent Application No. PCT/US2014/016079, filed Feb. 12, 2014 and titled “Rejection of False Turns of Rotary Inputs for Electronic Devices,” the disclosures of which are hereby incorporated herein by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates generally to rotary input devices for electronic devices, and more particularly relates to rotary input devices for wearable electronic devices. 
     BACKGROUND 
     Electronic devices—such as wearable computing devices (e.g., watches), mobile devices, mobile phones, tablet computers, music and multi-media players, gaming devices, and other handheld, wearable or portable devices—have one or more inputs such as buttons, touch screens, switches, and rotary inputs that can perform various functions. 
     With some rotary inputs or rotary controls, the present inventors have recognized that there may be false inputs that are not intended by the user but occur when the rotary inputs are inadvertently or unintentionally moved by contact with clothing, portions of a user&#39;s arm or hand or other items. 
     For instance, as shown in  FIGS. 1A-1B , with a wearable electronic device  20  in the form of a watch, rotary input(s) may be in the form of a crown  22  that rotates to provide input to and control of the wearable electronic device  20 . Since this crown  22  is a user input, external to the device, it is possible during normal wear that the crown  22  will be turned without the user intending it be turned—for example, when a user puts their hand in their pocket or rotates their wrist into extension ( FIG. 1A ), hitting the crown  22  into their lower forearm  24  or the back of their hand  26  ( FIG. 1A ).  FIG. 1C  shows an electronic device  20  positioned on a user&#39;s body (represented by dashed lines  24 ,  26 ) that could be the user&#39;s arm or back of the user&#39;s hand. If such a rotary input  22  also wakes the electronic device  20  from a sleep mode and turns on the screen, these false turns may not only be distracting to the user, they may also waste battery charge of device  20  that could have been saved for intended interactions. 
     Rotational motion of the user&#39;s hand or arm—such as shown in  FIG. 1B  or when for instance the user is opening a door, unscrewing a jar lid, or the like—may also result in inadvertent, unintentional false turns of the crown  22  of the wearable electronic device  20 . 
     Accordingly, as recognized by the present inventors, what is needed are mechanisms and processes for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices. 
     SUMMARY 
     According to one broad aspect of one embodiment of the present disclosure, disclosed herein is an electronic device configured to differentiate between false turns of a rotary input device unintended by a user, and valid turns of the rotary input device intended by the user. In one example, an electronic device may include a processor; a rotary input coupled with the processor, the rotary input having a shaft connected with a crown, the rotary input providing rotary input turn data to the processor when the rotary input is rotated; and a module operating on the electronic device, the module determining whether the rotary input turn data from the rotary input is invalid data resulting from unintended rotations of the rotary input. 
     In one example, the module determines whether an amount of rotations of the rotary input is greater than a threshold amount of rotations, and if not, the input turn data is considered invalid data. In another example, the module determines whether a rate of rotations of the rotary input is greater than a threshold rate of rotations, and if not, the input turn data is considered invalid data. 
     In another example, the electronic device may include a shield extending from the housing, the shield positioned around a bottom portion of the crown. The shield can reduce inadvertent contact between the user&#39;s body (such as the user&#39;s arm or back of the hand) with the crown of the rotary input. 
     In another example, the electronic device may include the shaft being positioned on the housing along an axis that is positioned above a centerline of the housing. In this manner, inadvertent contact between the user&#39;s body (such as the user&#39;s arm or back of the hand) with the crown of the rotary input is reduced when compared with an electronic device having the shaft of the rotary device positioned at or below the centerline of the housing. 
     In another example, the electronic device may include a light source positioned within the housing, the light source emitting light in a direction toward a portion of the user&#39;s body; and a detector positioned within the housing, the detector detecting one or more reflections of the light from the portion of the user&#39;s body. In this example, the module determines whether the portion of the user&#39;s body is in contact with the crown, and if so, the input turn data may be considered invalid data. 
     In another embodiment, the electronic device may include one or more capacitive sensors positioned on the crown, the sensors configured to detect contact with a user&#39;s finger. In this example, the module determines whether the rotation of the rotary input resulted from contact between the user&#39;s finger and the crown, and if not, the input turn data may be considered invalid data. 
     In another example, an electronic device may include one or more sensors detecting a position or movement/deflection of the shaft. In this example, based on the shaft deflection the module determines whether the rotation of the rotary input resulted from contact with an upper portion of the crown, and if not, the input turn data may be considered invalid data. 
     The electronic device may be in various forms, such as a wearable computing device having a touchscreen coupled with the processor. In one example, if the module determines that the input turn data is valid data from the rotary input, the processor alters the contents of the touch screen bases on the input turn data; and if the turn data is determined to be invalid data resulting from false, unintended turns of the rotary input, the turn data is rejected and the processor does not alter the contents of the touch screen based on the input turn data. 
     According to another broad aspect of another embodiment of the present disclosure, disclosed herein is an electronic device having a housing, wherein the electronic device may include a processor; at least one rotary input coupled with the processor, the rotary input providing rotary input turn data to the processor when the rotary input is rotated, the rotary input having a shaft connected with a crown; and at least one module operating on the electronic device, the module determining whether the rotary input turn data from the rotary input is valid data resulting from a user&#39;s rotations of the rotary input. 
     In one example, the module determines whether an amount of rotations of the rotary input is greater than a threshold amount of rotations, and if so, the input turn data may be considered valid data. In another example, the module determines whether a rate of rotations of the rotary input is greater than a threshold rate of rotations, and if so, the input turn data may be considered valid data. 
     In another example, the electronic device may include a light source positioned within the housing, the light source emitting light in a direction toward a portion of the user&#39;s body; and a detector positioned within the housing, the detector detecting one or more reflections of the light as reflected from the portion of the user&#39;s body; wherein the module determines whether the portion of the user&#39;s body is in contact with a lower portion of the crown, and if not, the input turn data may be considered valid data. 
     In another example, the electronic device may include one or more capacitive sensors positioned on the crown, the sensors configured to detect contact with a user&#39;s finger; wherein the module determines whether the rotation of the rotary input resulted from contact between the user&#39;s finger and the crown, and if so, the input turn data may be considered valid data. 
     In one example, the electronic device may include one or more sensors detecting a position of the shaft; wherein the module determines whether the rotation of the rotary input resulted from contact with an upper portion of the crown, and if so, the input turn data may be considered valid data. 
     According to another broad aspect of another embodiment of the present disclosure, disclosed herein is a process for an electronic device having at least one rotary input providing data, the process may include detecting one or more rotations of the rotary input; and determining whether the rotations resulted from inadvertent contact with the rotary input. In one example, if the determining operation determines that the rotations resulted from inadvertent contact with the rotary input, the data from the rotary input may be rejected. 
     In another example, the process may include detecting a distance between the electronic device and a portion of a user&#39;s body; and comparing the distance to a threshold distance to determine whether the rotations resulted from inadvertent contact with the rotary input. 
     In another example, the process may include detecting a presence or an absence of contact on the rotary input with a user&#39;s finger to determine whether the rotations resulted from inadvertent contact with the rotary input. 
     In one example, the process may include detecting a position of a shaft of the rotary input to determine whether the rotations resulted from inadvertent contact with the rotary input. 
     Other embodiments of the disclosure are described herein. The features, utilities and advantages of various embodiments of this disclosure will be apparent from the following more particular description of embodiments as illustrated in the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  illustrates an example of a wearable electronic device positioned on a user&#39;s arm which can generate false, inadvertent turns of a crown of a rotary input. 
         FIG. 1B  illustrates an example of a wearable electronic device positioned on a user&#39;s arm which can generate false, inadvertent turns of the crown of the rotary input. 
         FIG. 1C  illustrates a representation of a wearable electronic device positioned on a user&#39;s arm which can generate false, inadvertent turns of the crown of the rotary input. 
         FIG. 2  illustrates an example of a wearable electronic device having one or more rotary inputs, in accordance with one embodiment of the present disclosure. 
         FIG. 3  illustrates an example of a block diagram of an electronic device having one or more rotatable inputs and one or more false turn rejection modules, in accordance with one embodiment of the present disclosure. 
         FIG. 4  illustrates an example of a block diagram of an electronic device with a rotary input, light source, and an optical detector to aid in detecting and rejecting false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 5  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. 
         FIG. 6A  illustrates an example of a block diagram of an electronic device with a rotary input having one or more capacitive sensors to aid in rejecting false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 6B  illustrates a side view of  FIG. 6A  showing an electronic device with a rotary input having one or more capacitive sensors to aid in rejecting false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 7  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. 
         FIG. 8  illustrates an example of a block diagram of an electronic device with a rotary input and a shaft deflection detector to aid in rejecting false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 9  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. 
         FIG. 10  illustrates an example of a block diagram of an electronic device with a rotary input and one or more modules to aid in detecting and rejecting false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 11  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. 
         FIG. 12  illustrates an example of an electronic device with a rotary input having a mechanical structure to aid in reducing false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
         FIG. 13  illustrates an example of an electronic device with a rotary input positioned at an offset position to aid in reducing false turns of the rotary input, in accordance with one embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Disclosed herein are various embodiments of mechanisms and processes for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices, such as wearable computing devices. In one example of the present disclosure, an electronic device is provided with an optical detector that measures the distance between the electronic device and a surface of the wearer&#39;s forearm or hand, and when the distance is smaller than a baseline or threshold distance, the turns of the rotary input may be considered to be false, unintended turns. In another example of the present disclosure, a crown of a rotary input of an electronic device includes one or more capacitive sensors which detect the presence of a wearer&#39;s finger, which when absent, the turns of the rotary input may be considered to be false, unintended turns. In another example, deflections or positions of a shaft of a rotary input of an electronic device are measured and if the deflections/positions indicate an upward force on the rotary input (which are likely caused by the wearer&#39;s forearm or hand), the turns of the rotary input may be considered to be false, unintended turns. Other embodiments are described herein. 
       FIG. 2  illustrates an example of a wearable electronic device  30  having a plurality of rotatable inputs  32 , in accordance with one embodiment of the present disclosure. Electronic device  30 , in this example in the form of a computing device wearable on a user&#39;s wrist, may have one or more rotary inputs  32  which may include a crown or other structure  34  which may be attached to a shaft  35 , wherein the crown  34  is configured to be rotated by the user, for instance by one or more of the user&#39;s fingers or thumbs. The electronic device  30  may include a housing  36  that encloses and protects the contents of electronic device  30 , a display  38  (such as a touch screen) to display data and information to the user as well as to accept touch input from the user, audio output/speakers  39 , and in one example may also include a band or other structure  40  to attach the electronic device  30  to the user, for instance to the user&#39;s arm. 
     Device  30  may be configured to accommodate both left and right handed use, in which case a user can decide to orient the device  30  and crown  34  pointing either up the user&#39;s arm or down the user&#39;s arm, as desired. 
     Electronic device  30  may be configured as a portable computing device, and as shown in  FIG. 3 , may include a processor  42 , memory  44  (which may include ROM and RAM for program memory and data stores), and communications interfaces  46  (such as but not limited to wireless interfaces, Bluetooth interfaces, USB interfaces, Wi-Fi interfaces, TCP/IP interfaces, network communications interfaces, or any conventional communication interfaces). 
     Electronic device  30  may include various input devices  48 , such as but not limited to, touch inputs  50  (which may be part of or separate from touchscreen  38 ), audio/microphone input  52 , data from accelerometer(s)  53 , and rotary inputs  32  which can be provided to enable a user to manipulate or control electronic device  30 , and other inputs such as buttons, switches, sliders or any other conventional input. 
     In one example, rotary inputs  32  provide rotary input turn data to the processor  42 , and such turn data may include, but is not limited to, a number of turns, or increments of turns, of crown  34 , a direction of turns (e.g., clockwise or counterclockwise rotation of crown  34 ), a rate of turns, a length of time of rotations of crown  34 , and other data and parameters as described herein. 
     As used herein, the terms “turns” or “rotations” or the like (such as in the phrases “false turns” or “inadvertent turns”) include any movements, fractional rotations, partial rotations, full rotations, revolutions or any degree or amount of rotary movement of rotary input  32 /crown  34 , and these terms are used interchangeably herein. 
     Rotary input  32  allow a user to perform a variety of functions, such as but not limited to scroll contents of displays, scroll menus, scroll selections or options, manipulate lists or data, advance or rewind audio or video, move pointers, or perform other various controls of electronic device  30  or the content of display  38 . 
     In accordance with some embodiments of the present disclosure, electronic device  30  may include one or more module(s)  54  for detecting and/or handling false or inadvertent movements or turns of the rotary inputs  32 . Module(s)  54  may include one or more of the features, functions or processes disclosed herein. Module(s)  54  may be implemented in various manners, such as but not limited to, as hardware devices, specialized integrated circuits, logic, computer program products, code modules operating on processor  42  or device  30 , or in any combination thereof. 
     Various embodiments of electronic device  30  are described having one or more module(s)  54  that can determine whether turns of rotary input  32 /crown  34  (along with the associated rotary input turn data) are (or possibly are) false inadvertent turns with invalid data that were unintended by the user, or whether turns of rotary input  32 /crown  34  (along with the associated rotary input turn data) are (or possibly are) turns with valid data that were intended by the user. 
       FIG. 4  illustrates an example of an electronic device  30  with a rotary input  32 , wherein the electronic device is configured with a light source  60  to emit light  62  onto the wearer&#39;s body (such as the user&#39;s arm  24  or back of the user&#39;s hand  26 ), and a detector  64  that detects reflections of light  62 . The light  62  can be emitted prior to and/or during rotation of the rotary input  32 . Based on the characteristics of the reflections, electronic device  30  determines whether to reject the rotations of rotary input  32  as false, inadvertent rotations or as valid rotations intended by the user. For instance, the light  62  can be used to determine the distance from the crown to the wearer&#39;s arm  24  or back of the wearer&#39;s hand  26 , and the determined distance can be used as a factor in deciding whether rotations of the crown  34  should be rejected or accepted. In one example, if the detected light reflections indicate that the wearer&#39;s arm  24  or hand  26  are outside of a specified distance away from the crown  34 , then the rotations of crown  34  can be deemed valid rotations intended by the user; and conversely, if the detected light reflections indicate that the wearer&#39;s arm  24  or hand  26  are within a specified distance near the crown  34 , then the rotations of crown  34  can be deemed false, inadvertent rotations and rejected. 
     In another example, the distance from the crown to the user&#39;s arm  24  or hand  26  is used as a factor in deciding whether to accept or reject rotations of the crown  34 . For example, when the distance from the crown to the user&#39;s arm  24  or hand  26  goes to zero or is within a defined distance, turns of the crown  34  would be rejected unless it is detected that the crown was touched in at least two discrete places, such as a top portion of the crown and a bottom portion of the crown, such as when the user is attempting to rotate the crown while the user&#39;s hand is in an extension position. 
     In one example, the light source  60  can be a light emitting diode (LED) such as an infrared LED. In one embodiment, the shaft  35  of the rotary input  32  (or portions of the shaft) may be clear or transparent or may include a light pipe, and the light source  60  may be configured so that the light emits out of the shaft  35 . In another example, the light source  60  may be positioned to transmit light out of the housing  26  of the electronic device  30 , such as through an opening or a window in the housing  36 . 
     Detector  64  can be an optical detector such as a photodiode that detects reflected light, such as but not limited to infrared light. The housing  36  may be provided with a window, and the detector  64  can be placed within the housing  36  adjacent to the window. For instance, the window may be a dedicated window in the housing  36 , or a speaker port or other opening in the housing  36  can also serve as the window where the detector receives reflected light. 
     In  FIG. 5 , an example of a process for detecting and rejecting false turns of a rotary input of an electronic device is shown, in accordance with one embodiment of the present disclosure. At operation  70  light is transmitted by the electronic device. In one example, operation  70  transmits infrared light, although other types of light may be transmitted. Operation  72  detects reflections of the transmitted light. 
     At operation  74 , a distance can be calculated based on the transmitted light of operation  70  and reflected light detected by operation  72 . For instance, operation  72  can detect reflections of the transmitted light off of a user&#39;s arm or back of the hand depending upon the position of the electronic device relative to the user. 
     In one example, operations  70 - 74  may be performed during an initialization or calibration phase, for instance by prompting the user through the display of the electronic device for the user to place the electronic device on the user&#39;s wrist in a normal, flat, non-extended position. This can be used to determine a baseline or default distance value. 
     At operation  76 , movements or turns of the crown or rotary input are detected, and operation  78  determines a distance, for instance a distance from the electronic device to a wearer&#39;s arm or back of the hand that exists while the crown is being rotated. In one example, operation  78  may include transmitting light, detecting reflected light, and calculating a distance based on the reflected light, in a manner similar to operation  70 ,  72 ,  74 . 
     Operation  80  determines whether the distance measured by operation  80  is acceptable or unacceptable. For instance, operation  80  may determine whether the distance measured by operation  78  is below a desired threshold, wherein the threshold may be established by the distance calculated at operation  74 . For instance, in one example, a distance of zero or near zero may indicate that the crown is in direct contact with the wearer&#39;s back of the hand or forearm. If an acceptable distance is measured by operation  78 , then control may be passed to operation  82  where the rotations of the crown/rotary input are accepted as true, intended user input. Conversely, if an unacceptable distance is measured by operation  78 , then control may be passed to operation  84  where the rotations of the crown/rotary input may be rejected as false, unintended user input. In another example, operation  84  may indicate that the unacceptable distance be used as a factor in determining whether the turns of the rotary input of the electronic device may be false turns. 
     If operations  80 - 82  determine that the turns of the rotary input are true, intended turns, then operation  86  can process the movements of the rotary inputs as needed so that the electronic device responds appropriately to the user input received through the rotary input (such as but not limited to, changing the contents of the display, providing audible feedback, or otherwise processing the rotary input received from the user). 
     In another embodiment of the present disclosure and referring to  FIG. 6A-6B , an electronic device  30  can be formed having a rotary input  32  having one or more capacitive sensors  90  to aid in detecting and rejecting false turns of rotary input  32 . In one example, capacitive sensors  90  are shown in  FIG. 6B  (side view) as four sensors  90 A,  90 B,  90 C and  90 D, each positioned about a portion of the crown  34 . It is understood that more or fewer sensors  90  could be used, and sensors  90  could be positioned on other portions of crown  34  or positioned in different orientations on crown  34 . 
     In one example, sensors  90  can be used sense distance to the wearer, for instance distance from the crown to the wearer&#39;s wrist or back of the hand, or to sense or detect actual contact therebetween. In another example, sensors  90  can also be used to detect a user&#39;s finger placed on top of crown  34 , or on a side of crown  34 , to actuate the crown. Sensors  90  can also be used to distinguish whether rotation of crown  34  is resulting from detected contact with the top of the crown, which would tend to indicate that the rotation is intended by the user through a finger of the user; or whether rotation is resulting from detected contact with the bottom of the crown  34 , which would tend to indicate contact with a wearer&#39;s arm or back of their hand which is a false, unintended rotation that may be rejected. 
     In one example, electronic device  30  utilizes a rotary encoder (e.g., an absolute position rotary encoder) as part of the rotary input  32 , and may also include with capacitive sensors  90  in the crown  34 . The rotary encoder may be configured, in one example, to have marked lines, detents or other indicia delineating a portion, fraction, increment or unit of movement when compared with a full rotation of the rotary input  32 . In one example, the rotary encoder may have 50 marked lines across a full 360 degree rotation, which can be interpolated upwardly by the processor  42 , false turn rejection module  54  or other element within device  30 , such as by a factor of four (4×) to create 200 counts per revolution or rotation which equates to approximately 1.8 degrees of resolution. In this manner, processor  54  and/or false turn rejection module  54  can detect a fractional/partial amount or degree of rotatory movement of the rotary input  32 /crown  34  which is less than a full rotation of the rotary input  32 /crown  34 . It is understood that the amount of resolution of detected rotatory movement of rotary input  32 /crown  34  can be larger or smaller in other embodiments, depending upon the particular implementation, as is the interpolation of such detected movement. 
     Electronic device  30  can be configured to dynamically determine, at any given time, which sensors  90  on the crown  34  are towards the upper portion or top surface  92  ( FIG. 6A ) of electronic device  30 , and which sensors  90  on the crown are towards the lower portion or bottom surface  94  ( FIG. 6A ) of the electronic device  30 . In one example, electronic device  30  could be configured so that rotations of the crown  34  resulting from contact detected by sensors  90  towards the lower portion/bottom  94  of the electronic device  30  may be ignored or rejected as false turns, while rotations of the crown  34  resulting from contact detected by sensors  90  towards the upper portion  92  of electronic device  30  may be accepted as valid input intended by the user. In another example, the lower portion of crown sensors  90  could be dynamically desensitized, while the upper portion of the crown sensors  90  could be dynamically highly sensitized. 
     In another example of the present disclosure, sensors  90  on crown  34  can be used to distinguish the touch of a finger versus false turns resulting from a touch of a wrist or back of the user&#39;s hand. Sensors  90  on crown  34  may sense the presence of a user&#39;s finger by determining a local capacitance maximum value detected; in contrast, the capacitance profile generated by contact of a user&#39;s wrist with sensors  90  may appear more like a plane of capacitance and less like a local maximum. In this manner, sensors  90  on crown  34  can be used to distinguish the touch of a finger versus false turns resulting from a touch of a wrist or back of the user&#39;s hand. 
       FIG. 7  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. At operation  100 , the position of the capacitive sensors relative to the electronic device are determined. In one example, the position of the sensors relative to the top ( 92  in  FIG. 6A ) and/or bottom ( 94  in  FIG. 6A ) of the device may be determined based on the rotary position of the crown or position of the shaft of the crown, for instance through the use of a rotary encoder. 
     At operation  102 , movements or turns of the rotary input device are detected. At operation  104 , the capacitive sensors on the rotary input device are read, for instance, to determine which of the capacitive sensors detect touch or contact from a user. At operation  106 , a determination is made whether the contact is originating from capacitive sensors positioned towards the bottom ( 94  in  FIG. 6A ) of the device or towards the top ( 92  in  FIG. 6A ) of the device. If operation  106  determines that contact is originating from sensors positioned towards the bottom of the device, then operation  108  may reject the turns of the rotary input as false or unintended turns. 
     Conversely, if operation  106  determines that contact is originating from sensors positioned toward the top of the device, then operation  110  may accept the turns of the rotary input as true, intended turns by the user. Operation  112  may then process the rotations of the rotary input, and the electronic device may respond accordingly. 
     In one example, if sensors towards the top and towards the bottom of the device are simultaneously triggered, this input scenario could mean that the user is contacting the top of the crown with a finger while the bottom of the crown is being contacted by the user&#39;s arm or back of the hand. In one example, such scenario could be processed as true user input based on an assumption that the user is intentionally rotating the rotary input in a manner that is overcoming the contact from the user&#39;s arm or back of the hand. 
       FIG. 8  illustrates an example of a block diagram of an electronic device  30  with a rotary input  32  having a crown  34  attached to a shaft  35 , wherein a shaft deflection detector  120  is provided to aid in detecting and rejecting false turns of the rotary input  32 , in accordance with one embodiment of the present disclosure. In one example, the shaft  35  of the rotary input  32  is positioned or supported by pivot supports or suspension supports  122 , which may include one or more O-rings. 
     Shaft deflection detector  120 , in one example, measures or determines the position of the shaft  35  (such as an internal end of the shaft  35 ), such as by determining the distance and/or direction that shaft  35  moves or travels during a rotation of rotary input  32 . The deflections of shaft  35  are used to determine whether the turns of crown  34  are resulting from downward force for instance from a user&#39;s finger or thumb (which would be associated with true, intended rotary input), or resulting from upward force for instance from inadvertent contact between the crown  34  and the user&#39;s arm  24  or back of the hand  26  (which would be associated with false, unintended rotary input). 
     In another embodiment, detector  120  senses the moment or torque caused by downward pressure of a finger on the crown  34 , compared to the negative moment caused by upward pressure of the user&#39;s arm  24  or wrist  26  on the crown  34 . 
       FIG. 9  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. 
     At operation  130 , the position of the shaft of the rotary input relative to the electronic device is determined. In one example, the position of the shaft relative to the top and/or bottom of the device may be determined for instance through the use of a position sensor or torque sensor configured to monitor the shaft. 
     At operation  132 , movements or turns of the rotary input device are detected. At operation  134 , the deflection or direction of shaft movement is detected. At operation  136 , a determination is made whether the rotation of the crown/rotary input is originating from generally upward contact with the crown, or originating from generally downward contact with the crown. If operation  136  determines that the rotation of the crown/rotary input is originating from generally upward contact with the crown—for instance from inadvertent contact between the crown  34  and the user&#39;s arm  24  or back of the hand  26  which would be associated with false, unintended rotary input—then operation  138  may reject the turns of the rotary input as false or unintended turns. 
     Conversely, if operation  136  determines that the rotation of the crown/rotary input is originating from generally downward contact with the crown—for instance from contact from a user&#39;s finger or thumb into the crown which would be associated with true, intended rotary input—then operation  140  may accept the turns of the rotary input as true, intended turns by the user. Operation  142  may then process the rotations of the rotary input, and the electronic device may respond accordingly. 
       FIG. 10  illustrates an example an electronic device  30  with a rotary input  32  and one or more modules (for instance, modules  54  in  FIG. 3 ) that aid in detecting and rejecting false turns of the rotary input  32 , in accordance with one embodiment of the present disclosure. 
     In one example, modules  54  perform one or more functions or operations described herein. Modules  54  may also differentiate between true, intended turns of rotary input  32  and false, unintended turns of rotary input  32  by analyzing characteristics of the rotations detected by electronic device  30  when rotary input  32  moves. For instance, false turns would be expected to be relatively short duration, low torque events since they are often due to friction. These events could be rejected using a torque sensor measuring torque about the shaft axis, or a rotary detector or rotatory encoder in communications with the shaft  35  measuring characteristics of shaft rotations. 
     In one example, one or more thresholds (such as a minimum number of rotations, a minimum rate of rotations, a minimum amount of time during rotations, a minimum amount of rotational torque, or any combination thereof) may be defined and stored in device  30 , wherein the characteristics of the detected rotations of rotary input  32  need to exceed the threshold before electronic device  30  accepts the rotations as valid, intended input from the user. 
     In one example, the electronic device  30 , when in a sleep mode (for instance, with the display  38  off) and upon detecting rotation of rotary input  32 , may determine whether the characteristics of the rotations exceed the threshold(s), and if not, the detected turns may be deemed false, unintended turns and the device  30  is maintained in the sleep mode (with the display  38  off), thereby conserving stored battery energy. 
     Conversely, if the device  30  determines the characteristics of the rotations exceed the threshold(s), the detected turns may be deemed true, intended turns and the device  30  awakes out of the sleep mode and the display  38  may be activated. 
     For instance as an example for illustrative purposes only, approximately 160 to 180 degrees of turn of the crown  34  of input  32  may be a minimum threshold to register or trigger waking up the electronic device  30  out of a sleep mode or to perform other functions of the electronic device  30 . 
     In another example, once the device  30  is awake, the threshold(s) for accepting rotations of the rotary input could be reduced so as to accept lower torques or other lower rotary input characteristics as valid, intended rotary input. 
       FIG. 11  illustrates an example of a process for detecting and rejecting false turns of a rotary input of an electronic device, in accordance with one embodiment of the present disclosure. At operation  150 , the electronic device is in a sleep mode, for instance in a low-power mode with the display off and with one or more of other components of the electronic device in a low-power or sleep mode. At operation  152 , movements or turns of the rotary input/crown are detected. At operation  154 , characteristics of the rotation or movement of the rotary input are measured or determined. In one example, these characteristics may include but are not limited to the number of rotations, the rate of rotations, the amount of time during rotations, the amount of rotational torque, or any combination thereof. 
     At operation  156 , a determination is made as to whether the characteristics of the detected rotations, as measured by operation  154 , meet or exceed one or more rotation characteristic thresholds. These thresholds may include but are not limited to a minimum number of rotations, a minimum rate of rotations, a minimum amount of time during rotations, a minimum amount of rotational torque, or any combination thereof. If operation  156  determines that the detected rotations of the rotary input did not meet or exceed the rotation characteristic thresholds, then control is passed to operation  158  wherein the detected rotations/turns of the rotary input/crown may be rejected as false, unintended turns; and control may be returned to operation  150  wherein the electronic device is maintained in a sleep mode. 
     If operation  156  determines that the detected rotations of the rotary input do meet or exceed the rotation characteristic thresholds, then control is passed to operation  160  wherein the detected rotations/turns of the rotary input/crown may be accepted as true, intended turns and valid user input; and control may be passed to operation  162  wherein the electronic device may be awoken out of the sleep mode, and the display and other functional components of the device may be started up into a normal, operating mode. At operation  164 , the movements of the rotary input/crown, for instance as detected by operation  152 , are processed accordingly and the electronic device responds to such rotary input by performing one or more functions or operations programmed on the electronic device. 
     In another example of electronic device  30 , a photoplethysmograph (PPG) sensor may be provided within device  30  to measures the relative blood flow through the user&#39;s body proximate the location of the electronic device (such as but not limited to the user&#39;s arm/wrist), and to detect, for instance, a wrist clench characteristic or a wrist extension condition. When a wrist clench or extension condition (such as shown in  FIG. 1A ) is detected via the PPG sensor data, these conditions may be considered by the electronic device  30  when determining whether detected rotations of the rotary input  32  are false/unintended turns or true/intended turns. 
       FIG. 12  illustrates another example of an electronic device  30  with a rotary input  32  having a mechanical structure such as a shield  170  extending from the housing  36 , wherein the shield  170  surrounds a portion of the crown  34 . Shield  170  aids in reducing occurrences of false turns of the rotary input  32 , by shielding or partially shielding crown  34  from physical contact with a user&#39;s arm  24  or back of hand  26  or other body parts. For instance, shield  170  can reduce the occurrence of false, inadvertent turns of rotary input  32 /crown  34  during wrist extensions or other movement (such as movements shown in  FIGS. 1A, 1B ). Shield  170  may be configured to cover the bottom of the crown  34 , the sides of crown  34 , or both. 
       FIG. 13  illustrates an example of an electronic device  30  with a rotary input  32  positioned at upwardly offset position to aid in reducing occurrences of false turns of the rotary input  32 /crown  34 , in accordance with one embodiment of the present disclosure. In this example, the crown  34  is positioned or centered about an axis  180  that is above the centerline  182  of the housing  36  of device  30 . The upwardly offset position of rotary input  32  increases the amount of space between the bottom of the crown  34  and the user&#39;s back of the hand or lower forearm. In this manner, occurrences of false turns of crown  34  are decreased when compared with when the crown  34  is positioned or centered at or below the centerline  182  of the housing  36  of device  30 . 
     In another example of electronic device  30 , electronic device  30  can be configured so that if on touch screen  38 , two fingers are detected as contacting display  38 , then rotational input to the crown  34  may be considered false input. 
     In another example of electronic device  30 , electronic device  30  may be configured so that when accelerometer  53  senses that the device  30  is moving with general rotational motion or with randomized motion (such as during exercise by the user), device  30  may require a larger amount of rotations of rotary input  32 /crown  34  or a longer time duration of crown rotations, in order to accept the rotations/input as valid, intended input or to wake up device  30  if device  30  is in a sleep mode. 
     Hence, it can be seen that various embodiments of the present disclosure provide an electronic device  30  that detect and/or handle false or inadvertent movements or turns of the rotary inputs  32  which are unintended by the user. An electronic device  30  can be formed utilizing one or more of the features, functions, processes or structures disclosed herein. 
     While the methods disclosed herein have been described and shown with reference to particular operations performed in a particular order, it will be understood that these operations may be combined, sub-divided, or re-ordered to form equivalent methods without departing from the teachings of the present disclosure. Accordingly, unless specifically indicated herein, the order and grouping of the operations is not a limitation of the present disclosure. 
     It is understood that the directional references provided herein, such as top, bottom, upwards, downwards, clockwise, counterclockwise, left, right, and the like, are provided to describe examples of the embodiments disclosed herein, and are not intended to be limiting. 
     It should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, Figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claims require more features than are expressly recited in each claim. Rather, inventive aspects lie in less than all features of a single foregoing disclosed embodiment, and each embodiment described herein may contain more than one inventive feature. 
     While the disclosure is presented and described with reference to embodiments thereof, it will be understood by those skilled in the art that various other changes in the form and details may be made without departing from the spirit and scope of the disclosure.

Metadata:
Filing Date: 20201210
Publication Date: 20220531
Grant Date: 20220531
Priority Date: 20140212
Inventors: SHEDLETSKY, ANNA-KATRINA
WERNER, CHRISTOPHER M.
ELY, COLIN M.
WEISS, SAMUEL
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F3/0418", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/0362", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0421", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/044", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F2203/04106", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F1/163", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/044", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/163", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/1626", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0418", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/0362", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0418", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F1/163", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0362", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F2203/04106", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F1/1626", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0421", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/044", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 50280465