Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2008-07-15
2008-07-15
Smithers, Matthew (Department: 2137)
Cryptography
Video cryptography
Copy protection or prevention
C380S201000, C380S210000, C380S213000, C726S026000, C726S032000, C348S391100, C348S396100, C348S473000
Reexamination Certificate
active
07400727
ABSTRACT:
An apparatus for embedding secret information in an image signal transmitted with a shape signal showing the shape of an object is described. This apparatus comprises an embedding position decision unit for deciding a position in the object where the secret information is to be embedded, according to the shape signal; and a compositor for embedding the secret information in the position decided by the decision unit. Therefore, the secret information is protected against translation or clipping of image.
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Callahan Paul
Matsushita Electric - Industrial Co., Ltd.
Smithers Matthew
Steptoe & Johnson LLP
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