05251301 is referenced by 44 patents and cites 9 patents.

A system for simultaneously using a video signal to provide a video picture and computer data. At the transmitting end, a video signal is digitized and then modified by substituting digital signals representative of computer data for those representative of video pixels. The modified signal is reconverted to an analog signal and transmitted to a receiver. The receiver displays the video picture corresponding to the modified signal and extracts the computer data so that they may be provided to the computer. The computer can thus be controlled by the computer data as the video picture is being displayed.

Title
Computer remote control through a video signal
Application Number
199624
Publication Number
5251301
Application Date
May 22, 1992
Publication Date
October 5, 1993
Inventor
Gary M Cook
Pepperell
MA, US
Agent
Bromberg & Sunstein
Assignee
PC Connection
NH, US
IPC
H04N 7/08
G06F 15/16
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