Patents by Inventor Roy Steinar Sutherland

Roy Steinar Sutherland 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 signal luminance and chrominance separation
    Patent number: 6333764
    Abstract: A video signal decoder including a comb filter characterised by means for changing the operating mode of the filter progressively. Also, a video signal decoder including a comb filter characterised by means for adjusting continuously the degree of filtering performed by the filter. In one arrangement the decoder comprises an input filter and two signal multipliers wherein one of the multipliers is connected to receive a signal output by the input filter and the other multiplier is connected to receive a signal output by the comb filter wherein operation of the multipliers is mutually interdependent.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 25, 2001
    Assignee: Vistek Electronics Ltd.
    Inventors: Roger Neil Robinson, Roy Steinar Sutherland