Patents by Inventor Won S. Cho

Won S. Cho 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).

  • Color video printer which enables a pattern generation process when no synchronizing signals are detected
    Patent number: 5488690
    Abstract: A color video printer comprising a first signal processing circuit for processing a video signal inputted therein to be storable and detecting synchronizing signals from the inputted video signal, a memory control unit for outputting read and write signals as memory control signals and generating a predetermined color test signal and predetermined data valid interval signals upon receiving no synchronizing signals from the first signal processing circuit, a pattern generating circuit being enabled by the color test signal for outputting a video pattern signal determined in data valid intervals, a video memory for storing the video signal from the first signal processing circuit or the video pattern signal from the pattern generating circuit in response to the write signal from the memory control unit and outputting the stored video signal or video pattern signal in response to the read signal from the memory control unit, a second signal processing circuit for processing the video signal or the video pattern
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: January 30, 1996
    Assignee: Goldstar Co., Ltd.
    Inventor: Won S. Cho