Selective and persistent application level encryption for video provided to a client
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 3, 2013
Grant Date -
Jul 12, 2007
app pub date -
Jan 3, 2007
filing date -
Jan 6, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system, apparatus, and method are directed towards allowing ingestion of encrypted content into such as a VOD server, or PVR, or the like by selectively encrypting portions of a content stream based on various selection rules. In one embodiment, the selection rules include leaving selected portions of the content stream unencrypted, including packets that include a PES header; or video packets that include various trick play data such as picture start, GOP start, sequence start, sequence end data; PIDs associated with a PAT, PMT, or the like; while other portions of the content stream may be encrypted, including video and/or audio PIDs, or other video and/or audio portions. In still another embodiment, Entitlement Control Messages (ECMs) may be inserted that employ an encryption/decryption key rotation scheme, such as odd and/or even scrambling control bit structures, which may also be rotated based on a variety of conditions.
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