Patents by Inventor YU-LING FENG

YU-LING FENG 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).

  • Touch screen device
    Patent number: 8519985
    Abstract: A touch screen device includes a circuit board, a power input port located on the circuit board, a main battery electronically connected to the power input port, and a stylus. A backup battery electronically connected to the power input port is located in the stylus. A power control unit is located on the circuit board. The power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device. According to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: August 27, 2013
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Yu-Ling Feng, Yong-Gang Zhang, Kuan-Hung Chen
  • TOUCH SCREEN DEVICE
    Publication number: 20120019458
    Abstract: A touch screen device includes a circuit board, a power input port located on the circuit board, a main battery electronically connected to the power input port, and a stylus. A backup battery electronically connected to the power input port is located in the stylus. A power control unit is located on the circuit board. The power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device. According to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device.
    Type: Application
    Filed: January 21, 2011
    Publication date: January 26, 2012
    Applicants: FIH (HONG KONG) LIMITED, SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD.
    Inventors: YU-LING FENG, YONG-GANG ZHANG, KUAN-HUNG CHEN