EVENT DETECTION METHOD FOR WAKING UP A PORTABLE ELECTRONIC DEVICE AND ACTION SENSOR USING SAME

摘要

The present invention discloses an event detection method for waking up a portable electronic device and an action sensor using same. The event detection method includes the steps of: under a normal operation mode, sensing action events by the action sensor with a first data sensing frequency, wherein the action sensor operates by a normal current to detect the action events; entering into a sleep mode; under the sleep mode, detecting a wake-up event by the action sensor with a second data sensing frequency, wherein the action sensor operates by a weak current to detect the wake-up event, wherein the weak current is smaller than the normal current, and the second data sensing frequency is not higher than the first data sensing frequency; and returning to the normal operation mode when the wake-up event is detected.

主权项

1. An event detection method for waking up a portable electronic device having an action sensor, comprising the steps of:
under a normal operation mode, sensing action events by the action sensor with a first data sensing frequency, wherein the action sensor operates by a normal current to detect the action events; entering into a sleep mode wherein at least one component of the portable electronic device is not fully functioning to reduce power consumption; under the sleep mode, detecting a wake-up event by the action sensor with a second data sensing frequency, wherein the action sensor operates by a weak current to detect the wake-up event, wherein the weak current is smaller than the normal current, and the second data sensing frequency is not higher than the first data sensing frequency; wherein the action sensor is a capacitive sensor sensing the action events and detecting the wake-up event according to a change of capacitance, wherein a sensitivity of the capacitive sensor is related to an operation current of the capacitive sensor, and when the capacitive sensor operates by the weak current, the sensitivity of the capacitive sensor is lower than the sensitivity when the capacitive sensor operates by the normal current; and returning to the normal operation mode when the wake-up event is detected.