Upgrading of encryption
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United States of America Patent
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Mar 25, 2008
Grant Date -
Mar 11, 2004
app pub date -
Nov 13, 2002
filing date -
Jun 6, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of upgrading an encryption process for encryption of video information from an old encryption process to a new encryption process, consistent with certain embodiments involves selecting a portion of video content for selective encryption. The selected portion is duplicated to produce first and second copies of the selected portion. The first copy is encrypted using the old encryption process and the second copy is encrypted using the new encryption process to produce a dual partially encrypted segment of video information that can either be broadcast over a cable or satellite system or stored in a package medium as two program chains.
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