Method and apparatus for controlling the operation of a signal decoder in a broadcasting system
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United States of America Patent
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-
Feb 1, 2000
Grant Date -
N/A
app pub date -
Jun 18, 1996
filing date -
Jun 23, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a method and apparatus for controlling the operation of a signal decoder in a broadcasting system, a broadcast signal and an encrypted signature are generated and the signature is added to the signal. The signal together with the signature is broadcasted and received in the decoder, where the signature is decrypted and compared with a verification value. If a match occurs, further operation of the decoder is allowed. If a match does not occur, further operation of the decoder is disallowed.
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