Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2003-08-28
2008-03-04
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S193000, C705S057000
Reexamination Certificate
active
07340609
ABSTRACT:
When sample data is played back, audio guide data G1and G2and subsequent frame data are played back based on usage license information L1contained in the sample data. When high-quality data is generated, the audio guide data G1and G2and the usage license information L1are overwritten based on usage license information L2contained in additional data. When the high-quality data is played back, audio guide data G1′ and G2′ and subsequent frame data are played back based on usage license information L3. A user is then able to identify the playback status of the sample data or high-quality data by listening to an audio guide.
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Haneda Naoya
Tsutsui Kyoya
Barron Jr. Gilberto
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Perungavoor Venkat
Sony Corporation
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