Robert R Mathews

US Patent:

46149708, Sep 30, 1986

Filed:

Dec 13, 1983

Appl. No.:

6/561054

Inventors:

Charles B. Clupper - Cameron Park CA
Robert J. Mathews - Fair Oaks CA

Assignee:

U.S. Computer Systems - Sacramento CA

International Classification:

H04N 7167

US Classification:

358120

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.

US Patent:

47682280, Aug 30, 1988

Filed:

Sep 11, 1987

Appl. No.:

7/096343

Inventors:

Charles B. Clupper - Cameron Park CA
Robert J. Mathews - Fair Oaks CA

Assignee:

U.S. Computer Systems - Sacramento CA

International Classification:

H04N 7167
H04N 704

US Classification:

380 20

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.