发明名称 |
SYSTEM, CIRCUIT AND METHOD FOR ACTIVATING AN ELECTRONIC DEVICE |
摘要 |
The disclosure provides a system, circuit and method for activating an electronic device from a low power state. The circuit comprises: a microprocessor; a first accelerometer; a second accelerometer which is activated upon receiving a movement signal from the first accelerometer, indicating a movement of the electronic device; a threshold circuit connected to an output of the second accelerometer to allow only signals generated by the second accelerometer that exceed a threshold to pass; an input device; and a monitoring circuit connected to the input device and an output of the threshold circuit. The monitoring circuit comprises a latch circuit utilizing signals from the threshold circuit and a reset signal from the microprocessor to generate a trigger signal to activate the input device. The monitoring circuit selectively generates an activation signal to activate the electronic device to a higher power state utilizing a notable signal received from the input device.
|
申请公布号 |
US2010003944(A1) |
申请公布日期 |
2010.01.07 |
申请号 |
US20090558731 |
申请日期 |
2009.09.14 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
ORR KEVIN;FYKE STEVEN;MAK-FAN DAVID |
分类号 |
H04B1/16;G08B5/22 |
主分类号 |
H04B1/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|