Conversion of television signal formats with retention of common control data stream
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 1992
Grant Date -
N/A
app pub date -
May 2, 1991
filing date -
May 2, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Television signals are converted from a first format to a plurality of different formats while retaining a common control data stream. A first television signal in a first format is separated into a first signal portion carrying television information and a second signal portion carrying control data. The first signal portion is reformatted into a second format. The second signal portion is combined with the reformatted first signal portion to provide a second television signal. In this manner, a plurality of television signals having different formats can be transmitted with common control data, e.g., for controlling access to television programming.
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Family
International Classification(s)
Cited Art Landscape
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