Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2007-11-06
2007-11-06
Barroń, Jr., Gilberto (Department: 2132)
Cryptography
Video cryptography
Video electric signal modification
C725S031000, C375S240130, C380S200000, C380S211000
Reexamination Certificate
active
10303594
ABSTRACT:
A selective encryption encoder and method of dual selective encryption and detection of intra-coded slices in video content. The selective encryption encoder has a packet identifier that identifies packets of at least one specified packet type, the at least one specified packet type being packets in a set of N consecutive slices in a frame wherein the a second byte after a slice start code is identical in all N consecutive slices. A packet duplicator duplicates the identified packets to produce first and second sets of the identified packets. The packets are sent to and from a primary encryption encoder to encrypt the first set of identified packets under a first encryption method. A secondary encrypter encrypts the second set of identified packets under a second encryption method.
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Candelore Brant L.
Derovanessian Henry
Pedlow, Jr. Leo M.
Barro, Jr. Gilberto
Homayounmehr Farid
Miller Jerry A.
Miller Patent Services
Sony Corporation
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