System for transmitting a commercial program in a CATV system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 5, 1994
Grant Date -
N/A
app pub date -
Mar 27, 1992
filing date -
Mar 29, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A CATV system includes a broadcasting station, a satellite, and a local center. Scrambled television signals transmitted from the broadcasting station to the local center through the satellite are descrambled and re-scrambled at the local center, and the re-scrambled TV signals are transmitted to terminal devices. A non-scrambled TV signal included in the TV signal transmitted from the broadcasting station to the local center is detected. The detected non-scrambled TV signal is transmitted to terminal devices without scrambling.
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Family
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Cited Art Landscape
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