Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2011-07-19
2011-07-19
Cervetti, David Garcia (Department: 2436)
Cryptography
Video cryptography
Video electric signal modification
C380S239000, C380S042000, C713S189000, C725S031000, C725S138000
Reexamination Certificate
active
07983417
ABSTRACT:
The present invention is suitable for use in a multi-encrypted system that dynamically allocates stream identifiers in a secondary overlay stream depending upon the identifiers in a primary encrypted stream. The primary encrypted input stream is monitored to determine the presence of all identifier values. Once the identifier values are determined, the values are stored in an allocation table and marked as ‘in-use’ to ensure that these identifier values are not allocated to any of the secondary overlay streams. The primary encrypted stream is monitored and the allocation table is updated continuously to detect any changes or conflicts to the identifier values, and the secondary overlay streams are dynamically updated accordingly.
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Buchen Neil B.
Wilson Thomas C.
Cervetti David Garcia
Merchant & Gould
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