Cryptography – Video cryptography
Reexamination Certificate
2007-11-27
2007-11-27
Song, Hosuk (Department: 2135)
Cryptography
Video cryptography
C380S239000, C713S189000, C713S192000
Reexamination Certificate
active
10763865
ABSTRACT:
In accordance with one embodiment, a method for securing control words is provided. The method includes receiving scrambled digital content in a descrambler integrated circuit. The method further includes receiving an encrypted control word in the descrambler integrated circuit, decrypting the encrypted control word using a key stored in a register circuit of the descrambler integrated circuit, and descrambling the scrambled digital content in the descrambler integrated circuit using the decrypted control word.
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patent
Blakely , Sokoloff, Taylor & Zafman LLP
Song Hosuk
Sony Corporation
Sony Electronics Inc.
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