Patents Represented by Attorney William A. Powers

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  • Scrambler with self-calibration
    Patent number: 5177787
    Abstract: The invention is directed to an improved scrambler capable of self-calibrating output signals. In one embodiment, the scrambler provides an encoded signal along separate signal pulses. A portion of one signal is made to correspond to a portion of another signal to thereby self-calibrate the signals. Also, portions of the incoming video signal are forced to correspond with internally generated voltage level signals.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: January 5, 1993
    Assignee: Scientific-Atlanta, Inc
    Inventors: William T. Murphy, James Farmer, Lamar West, Jr.