Patents by Inventor Eun A Cha

Eun A Cha 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).

  • Video input level control circuit in a video appliance
    Patent number: 6191760
    Abstract: A video input level control circuit in a video display device which can improve picture quality of the video appliance by selectively controlling input levels of the video signals inputted in different manners from different-typed video cards of a PC so that the input levels may be minimal.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: February 20, 2001
    Assignee: LG Electronics Inc.
    Inventors: Il Jin Jun, Eun A Cha