Invention Grant
US08214667B2 Central processing unit start-up circuit of portable electronic devices
有权
便携式电子设备的中央处理单元启动电路
- Patent Title: Central processing unit start-up circuit of portable electronic devices
- Patent Title (中): 便携式电子设备的中央处理单元启动电路
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Application No.: US12605693Application Date: 2009-10-26
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Publication No.: US08214667B2Publication Date: 2012-07-03
- Inventor: Wan-Ning Li , Ying-Zheng Li
- Applicant: Wan-Ning Li , Ying-Zheng Li
- Applicant Address: CN ShenZhen, Guangdong Province TW Tu-Cheng, New Taipei
- Assignee: Shenzhen Futaihong Precision Industry Co., Ltd.,Chi Mei Communication Systems, Inc.
- Current Assignee: Shenzhen Futaihong Precision Industry Co., Ltd.,Chi Mei Communication Systems, Inc.
- Current Assignee Address: CN ShenZhen, Guangdong Province TW Tu-Cheng, New Taipei
- Agency: Altis Law Group, Inc.
- Priority: CN200910302418 20090518
- Main IPC: G06F1/26
- IPC: G06F1/26
Abstract:
A central processing unit (CPU) start-up circuit for controlling a CPU of a portable electronic device includes a power management unit (PMU) connected to the CPU, an awaking circuit connected to the CPU, and a main power supply connected to the CPU, the PMU and the awaking circuit. The main power supply provides working electric power to the CPU, the PMU detects the status of the main power supply and generates a status signal (SS) according to the detecting result, the awaking circuit detects the status of the main power supply and generates a waking signal (WS) according to the detecting result, and the SS and the WS are both transmitted to the CPU to cooperatively control the CPU to be switched on and switched off.
Public/Granted literature
- US20100293395A1 CENTRAL PROCESSING UNIT START-UP CIRCUIT OF PORTABLE ELECTRONIC DEVICES Public/Granted day:2010-11-18
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