Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2007-03-06
2007-03-06
Song, Hosuk (Department: 2135)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C380S201000, C726S026000
Reexamination Certificate
active
09812726
ABSTRACT:
Digital sound data is encrypted and recorded in a recording medium200. Information212required for decoding the encrypted digital sound data220is recorded in a program211for controlling the reproduction of sound data separately from the digital sound data220. This can prevent PCM sound data recorded in the recording medium as a part of a content, from being reproduced separately from the content.
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Ohdaira Toshimitsu
Terasaka Isamu
Yamamoto Hiroshi
Katten Muchin & Rosenman LLP
Song Hosuk
Sony Computer Entertainment Inc.
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