SYSTEMS AND METHODS FOR DIGITAL PROGRAM INSERTION WITHIN SCRAMBLED CONTENT
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United States of America Patent
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Issued Date -
Jun 16, 2011
app pub date -
Dec 14, 2009
filing date -
Dec 14, 2009
priority date (Note) -
Abandoned
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Abstract
Systems and methods for digital program insertion. Entitlement control messages (ECMs) may be sent over an out-of-band communication channel to a client device such that the ECMs are received proximate in time to splice points where, e.g., advertising is inserted into a scrambled program or when the scrambled program is to resume at the end of the ad or program insertion. The ECMs may be communicated over the out-of-band channel having a timing such that the client device can process the ECMs, extract a control word and begin descrambling of the scrambled program to provide near seamless splices. In some implementations, out-of-band bandwidth is conserved as the ECMs are sent a splice time, rather than continuously.
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