Patents Assigned to U.S. Computer Systems
  • Patent number: 4768228
    Abstract: An apparatus for receiving, detecting and storing a series of discrete bits of data transmitted in conjunction with a video signal wherein only a portion of the transmitted data is read and saved.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: August 30, 1988
    Assignee: U.S. Computer Systems
    Inventors: Charles B. Clupper, Robert J. Mathews
  • Patent number: 4614970
    Abstract: A descrambler apparatus for use with a video transmitter which transmits scrambled video transmission without detectable horizontal or vertical synchronizing pulses but with a descramble signal which occurs at a random time in each frame and which is coded with information indicating the length of time that the signal precedes a fixed preselected point in the transmitted frames. The descrambler apparatus detects the coding of each descramble signal and, after a length of time corresponding to the coding, generates a full frame sequence of horizontal and vertical sync pulses starting at the preselected point in a frame. The generated sync pulses are combined with the received video signals to produce a properly synchronized video signal.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: September 30, 1986
    Assignee: U.S. Computer Systems
    Inventors: Charles B. Clupper, Robert J. Mathews