Data recording and reproduction apparatus

Details Data recording and reproduction apparatus Data recording and reproduction apparatus

2006-01-31

2006-01-31

Barron, Jr., Gilberto (Department: 2132)

Cryptography

Electric signal masking

C713S176000, C713S189000, C713S193000

Reexamination Certificate

active

06993133

ABSTRACT:
A data recording and reproduction apparatus is provided with a stream attribute decision means for deciding whether an audio data stream supplied from an outside source is compressed or not. A compression ID flag having a value according to the result of the compression decision is attached to the audio data stream, and the flag-attached audio data stream is written in a stream storage unit. Therefore, a watermark can be inserted in a compressed audio data stream after reading the compressed audio data stream from the stream storage unit, whereby the time required for writing the compressed audio data stream in the stream storage unit is reduced, and the quality of analog audio data obtained by reproducing the compressed audio data stream is prevented from being degraded.

REFERENCES:
patent: 5224087 (1993-06-01), Maeda et al.
patent: 5379345 (1995-01-01), Greenberg
patent: 5848155 (1998-12-01), Cox
patent: 5912972 (1999-06-01), Barton
patent: 6061793 (2000-05-01), Tewfik et al.
patent: 6209092 (2001-03-01), Linnartz
patent: 0 661 819 (1995-07-01), None
patent: 0840507 (1998-05-01), None
patent: 0903943 (1999-03-01), None
patent: 0915620 (1999-05-01), None
patent: 0 933 919 (1999-08-01), None
patent: 10-145732 (1998-05-01), None
patent: 11-32200 (1999-02-01), None
patent: 11-98479 (1999-04-01), None
patent: 11-144380 (1999-05-01), None
Hartung and Girod: “Digital Watermarking of Raw and Compressed Video” Proceedings of the Spie, Spie, Bellingham, VA, US, vol. 2952, Oct. 7, 1996; pp. 205-213, XP002085796.

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