System for processing user access control data at a decoder
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United States of America Patent
Stats
-
Dec 13, 1994
Grant Date -
N/A
app pub date -
Sep 3, 1993
filing date -
Sep 14, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A subscriber/user TV system operates in response to locally stored entitlements. A user gains access to a program only if the description of the program is consistent with entitled rights owned by the user. Each night at a given hour, decoders affiliated with the system tune to a predetermined video or audio channel, a so-called Barker channel. Decoders previously in a stand-by mode are activated in order to tune to the Barker channel. The program provider then sends the entitlement data on the Barker channel while every affiliated decoder is responsive to an incoming data stream.
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Family
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Cited Art Landscape
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