Patents by Inventor Fa-Qing Xu

Fa-Qing Xu 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).

  • Keyboard
    Patent number: 7930567
    Abstract: A keyboard includes a keyboard processor configured for outputting a control signal for turning a computer on/off; a switch circuit connected to a turn-on port of a south bridge chipset on a mainboard of the computer; and a processor connected to the keyboard processor and the switch circuit. When the processor receives the control signal output from the keyboard processor, the processor outputs a high pulse signal to the switch circuit to make the turn-on port grounded to turn on or turn off the computer.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: April 19, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Fa-Qing Xu, Gui-Rong Chen
  • Power supply protecting circuit
    Patent number: 7697254
    Abstract: A power supply protecting circuit configured to protect an electronic device includes a normally open switch, a voltage dropping circuit, a first rectifier, and a relay having a coil and switch. A power terminal of the electronic device is connected to a power terminal of a power supply, the other power terminal of the electronic device is connected to the other power terminal of the power supply via the normally open switch. The power terminal of the electronic device is connected to the other power terminal of the electronic device via the voltage dropping circuit, the first rectifier, and the coil of the relay in turn. The switch of the relay is connected in parallel to the normally open switch.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 13, 2010
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Fa-Qing Xu
  • KEYBOARD
    Publication number: 20090183012
    Abstract: A keyboard includes a keyboard processor configured for outputting a control signal for turning a computer on/off; a switch circuit connected to a turn-on port of a south bridge chipset on a mainboard of the computer; and a processor connected to the keyboard processor and the switch circuit. When the processor receives the control signal output from the keyboard processor, the processor outputs a high pulse signal to the switch circuit to make the turn-on port grounded to turn on or turn off the computer.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 16, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: FA-QING XU, GUI-RONG CHEN
  • POWER SUPPLY PROTECTING CIRCUIT
    Publication number: 20090059458
    Abstract: A power supply protecting circuit configured to protect an electronic device includes a normally open switch, a voltage dropping circuit, a first rectifier, and a relay having a coil and switch. A power terminal of the electronic device is connected to a power terminal of a power supply, the other power terminal of the electronic device is connected to the other power terminal of the power supply via the normally open switch. The power terminal of the electronic device is connected to the other power terminal of the electronic device via the voltage dropping circuit, the first rectifier, and the coil of the relay in turn. The switch of the relay is connected in parallel to the normally open switch.
    Type: Application
    Filed: December 28, 2007
    Publication date: March 5, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: FA-QING XU