Patents by Inventor Gwang-Sig Jang

Gwang-Sig Jang 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).

  • Appparatus and method for controlling power to USB device
    Patent number: 7945711
    Abstract: The present invention relates to an apparatus and method for controlling power to a Universal Serial Bus (USB) device. The present invention provides an apparatus for controlling power to a USB device, the USB device being used to connect a Personal Computer (PC) with a peripheral device, the power control apparatus including a plug-in port for connecting the peripheral device with the PC, a state detector for detecting whether the peripheral device is in a preparation completion state, a power supply unit for supplying power to the USB device, and a power control unit for controlling the power supply unit so that power is supplied to the USB device if it is determined that the peripheral device is in a plugged-in state, and if it is determined that the peripheral device is in a preparation completion state by the state detector.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: May 17, 2011
    Assignee: Pointchips Co., Ltd.
    Inventors: Kyung-Beom Kim, Young-Hwan Kim, Tae-Gyun Kim, Min-Sick Park, Jae-Han Lee, Gwang-Sig Jang, Sang-Hyun Han