System and method for transitioning an electronic device from a first power mode to a second power mode

摘要

A system and method for reducing power consumption in an electronic device by controlling the transition of the electronic device from a sleep mode to a full power mode. The electronic device comprises a main processor a touch-sensitive overlay, and an overlay controller. A sequence of touch inputs on the touch-sensitive overlay are detected and captured using the overlay controller while the main processor is in the sleep mode. A subset of the sequence of touch inputs is processed using the overlay controller to determine that the sequence of touch inputs corresponds to a coarse model of a pre-determined wake-up gesture prior to transitioning the electronic device from the sleep mode to the full power mode.

主权项

1. A method for transitioning an electronic device from a first power mode to a second power mode based on a wake-up gesture captured as a sequence of touch inputs by a touch-sensitive overlay, the method comprising:
determining a coarse match between the captured wake-up gesture and a pre-determined wake-up gesture using an overlay controller while a main processor is in the first power mode; transitioning the main processor from the first power mode to the second power mode in response to the coarse match; determining a fine match between the captured wake-up gesture and the pre-determined wake-up gesture using the main processor in the second power mode; and, transitioning the electronic device from the first power mode to the second power mode in response to the fine match.