Partial encryption and PID mapping
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United States of America Patent
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Jan 15, 2008
Grant Date -
Jun 1, 2006
app pub date -
Nov 18, 2005
filing date -
Jun 6, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method of selecting data for multiple carriage partial encryption consistent with certain embodiments involves examining unencrypted packets of data in a digital audio/video data stream to identify a packet type; and selecting packets of the identified packet type for multiple partial encryption, wherein the amount of data to be encrypted is sufficient to render a portion of an entire frame unviewable. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
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