Patents by Inventor Wan-Ning Li

Wan-Ning Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Central processing unit start-up circuit of portable electronic devices
    Patent number: 8214667
    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.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: July 3, 2012
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., Chi Mei Communication Systems, Inc.
    Inventors: Wan-Ning Li, Ying-Zheng Li
  • CENTRAL PROCESSING UNIT START-UP CIRCUIT OF PORTABLE ELECTRONIC DEVICES
    Publication number: 20100293395
    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.
    Type: Application
    Filed: October 26, 2009
    Publication date: November 18, 2010
    Applicants: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., CHI MEI COMMUNICATION SYSTEMS, INC.
    Inventors: WAN-NING LI, YING-ZHENG LI