Conditional access enhancements using an always-on satellite backchannel link
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United States of America Patent
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Issued Date -
Jan 10, 2008
app pub date -
Jul 10, 2006
filing date -
Jul 10, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus for providing conditional access to media programs is disclosed. An embodiment of the method comprises the steps of generating a validation message in at least one of the receiver stations, the validation message comprising an answer to a validation query; transmitting the validation message directly from the receiver to the satellite on an always-on backchannel communications link; and receiving the media programs from the satellite only if the validation message matches an expected validation message.
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