Patents by Inventor Da-Wei Jin

Da-Wei Jin 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).

  • Power source switching circuit
    Patent number: 8242637
    Abstract: A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: August 14, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Shi-Tao Chen, Sheng-Chung Huang, Hsiang-Jui Hung, Da-Wei Jin, Lei Yang, Yong-Xian Zhao
  • POWER SOURCE SWITCHING CIRCUIT
    Publication number: 20100231048
    Abstract: A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.
    Type: Application
    Filed: June 3, 2009
    Publication date: September 16, 2010
    Applicants: HONG FU JIN PRECISION INDUSTRY(ShenZhen) Co., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHI-TAO CHEN, SHENG-CHUNG HUANG, HSIANG-JUI HUNG, DA-WEI JIN, LEI YANG, YONG-XIAN ZHAO