Method and apparatus for minimizing conditional access information overhead while ensuring conditional access information reception in multi-tuner receivers
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United States of America Patent
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Feb 14, 2006
Grant Date -
May 27, 2004
app pub date -
Nov 21, 2002
filing date -
Nov 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for receiving conditional access information (CAI) on one or more of a plurality of tuners receiving the CAI from a first tuner of the plurality of tuners is disclosed. The method comprises the steps of determining if the CAI is of a first type that is transmitted by all of a plurality of transponders or of a second type that is transmitted by fewer than all of the plurality of transponders; passing, to a conditional access module, only CAI from the first tuner and rejecting CAI from any other tuner if the CAI is of a type that is transmitted by all transponders; and passing, to the conditional access module, all CAI from any of the plurality of tuners if the CAI is of a type that is transmitted by fewer than all transponders.
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