System and method for performing efficient program encoding without splicing interference
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United States of America Patent
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Issued Date -
Oct 25, 2007
app pub date -
Apr 24, 2006
filing date -
Apr 24, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Multiple-frame format data streams are selectively encrypted at a master head-end prior to distribution. Selective encryption includes monitoring packet for frame header information. Only packets that do not contain frame header information are encrypted, while those that contain frame header information are left unencrypted. Splicers at distribution hubs can then interject local content into the data streams and forward these to individual subscribers at the local node groups.
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