05200822 is referenced by 403 patents and cites 21 patents.

Data are added invisibly to the active video component of a television signal by a modulated carrier. The data, upon recovery, may be used for numerous purposes, including network signaling, data transmission, program identification, remote machine control, broadcast verification, and signal quality detection and measurement.

Title
Arrangement for and method of processing data, especially for identifying and verifying airing of television broadcast programs
Application Number
7/690111
Publication Number
5200822
Application Date
April 23, 1991
Publication Date
April 6, 1993
Inventor
Francis A Davenport
Haddonfield
NJ, US
W Robin Wilson
New York
NY, US
Stephen M Mahrer
Mt. Holly
NJ, US
Kenneth A Bronfin
New York
NY, US
Agent
Rosenman & Colin
Assignee
National Broadcasting Company
NY, US
IPC
H04N 7/08
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