METHOD AND CIRCUIT FOR SWITCHING A WRISTWATCH FROM A FIRST POWER MODE TO A SECOND POWER MODE
First Claim
Patent Images
1. A method combining gesture detection by an accelerometer and gesture detection with a touch panel for switching a wristwatch from a first power mode to a second power mode, comprising:
- using an accelerometer with embedded signal processing capabilities for generating an acceleration signal used for detecting a gesture on a cover glass of said wristwatch;
discriminating between gesture and no gesture based on the frequency of said acceleration signal, and/or the direction of said acceleration signal, and/or the slope of said acceleration signal as measured by said accelerometer being a three dimensional accelerometer,waking up a microcontroller in said wristwatch upon detection of a gesture by said accelerometer,using said microcontroller for detecting said gesture and for discriminating between gesture and no gesture based at least on signals from a touch panel underneath said cover glass.
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Abstract
An electronic wristwatch operable in two power modes. The wristwatch has an inertial sensor for detecting a gesture on a cover glass of the wristwatch. A touch panel is provided underneath the cover glass for detecting the gesture. Gesture detection by the inertial sensor is combined with gesture detection by the touch panel for triggering a switch from a first power mode to a second power mode.
104 Citations
19 Claims
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1. A method combining gesture detection by an accelerometer and gesture detection with a touch panel for switching a wristwatch from a first power mode to a second power mode, comprising:
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using an accelerometer with embedded signal processing capabilities for generating an acceleration signal used for detecting a gesture on a cover glass of said wristwatch; discriminating between gesture and no gesture based on the frequency of said acceleration signal, and/or the direction of said acceleration signal, and/or the slope of said acceleration signal as measured by said accelerometer being a three dimensional accelerometer, waking up a microcontroller in said wristwatch upon detection of a gesture by said accelerometer, using said microcontroller for detecting said gesture and for discriminating between gesture and no gesture based at least on signals from a touch panel underneath said cover glass. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 19)
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6. (canceled)
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12. (canceled)
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15. The method of claim 141, said step of detecting a wristturn comprising:
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detecting that the orientation of the wristwatch is in a first range; detecting that the orientation of the wristwatch is then in a second range, different from said first range, detecting that the wristwatch remains substantially immobile during a predetermined duration.
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16. A wristwatch which can be operated in a plurality of power modes including a first power mode and a second power mode, comprising:
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a display; a touch panel underneath a cover glass of said wristwatch for detecting a gesture on said cover glass; an accelerometer with embedded signal processing capabilities, said accelerometer being arranged for generating an acceleration signal and for discriminating between gesture and no gesture based on the frequency of said acceleration signal, and/or the direction of said acceleration signal as measured by said accelerometer being a three dimensional accelerometer, and/or the slope of said acceleration signal, a microcontroller commanded so as to be switched to said second power mode upon gesture detection by said accelerometer and for discriminating between gesture and no gesture based at least on signals from said touch panel. - View Dependent Claims (17)
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18. A method for switching a wristwatch from a first power mode to a second power mode, comprising:
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using an accelerometer for detecting a wristturn, and switching said wristwatch from said first power mode to said second power mode when a wristturn has been detected.
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Specification