Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2008-01-15
2008-01-15
Smithers, Matthew B (Department: 2137)
Cryptography
Video cryptography
Video electric signal modification
C380S217000
Reexamination Certificate
active
07319754
ABSTRACT:
A method and a circuit for marking with a binary code a video sequence compressed by motion calculation, from one picture to another, of macroblocks dividing each picture, the digital pictures being distributed in at least two categories according to whether they are coded integrally or by the motion vectors of the macroblocks with respect to the previous picture or to the previous and next pictures, which includes, at least for the pictures coded by motion vectors, only marking the macroblocks for which the motion vectors are greater than a predetermined threshold.
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French Search Report from French Patent Application 02/08114, filed Jun. 28, 2002.
Jorgenson Lisa K.
Morris James H.
Smithers Matthew B
STMicroelectronics S.A.
Wolf Greenfield & Sacks P.C.
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