Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2008-05-20
2008-05-20
Truong, Thanhnga (Department: 2135)
Cryptography
Video cryptography
Video electric signal modification
C380S028000
Reexamination Certificate
active
10273905
ABSTRACT:
A selective encryption encoder and method of dual selective encryption. 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 any of a plurality of packet types including packets containing a video slice headers or packets carrying data appearing in an active area of the image. 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.
Klimach Paula
Miller Jerry A.
Miller Patent Services
Sony Corporation
Sony Electronics Inc.
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