Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2002-07-15
2008-10-07
Moise, Emmanuel L (Department: 2137)
Information security
Prevention of unauthorized use of data including prevention...
Access control
Reexamination Certificate
active
07434266
ABSTRACT:
A disc key detecting unit3detects a disc key on the basis of data which is supplied from an RF processor1. If the disc key can be detected, a system controller7controls an optical pickup or the like and reproduces data of a few sectors included in an audio block portion together with data in a TOC portion. On the basis of the disc key, a data decrypting unit4decrypts the data in the TOC portion which is supplied from a data demodulating unit2and the data of a few sectors and supplies them to a data processing unit5. The data processing unit supplies the data in the TOC portion and data in a header portion included in the sector to the system controller7. A validity discriminating unit8confirms continuity of time data included in the header portion supplied from the data processing unit5. If there is no continuity in the time data, a reproducing process or the like is suppressed.
REFERENCES:
patent: 5513260 (1996-04-01), Ryan
patent: 5541997 (1996-07-01), Pappas et al.
patent: 5572507 (1996-11-01), Ozaki et al.
patent: 5930209 (1999-07-01), Spitzenberger et al.
patent: 6289102 (2001-09-01), Ueda et al.
patent: 6865676 (2005-03-01), Staring et al.
patent: 6925342 (2005-08-01), Hars
patent: 7031472 (2006-04-01), Noda
patent: 5-274805 (1993-10-01), None
patent: 6-236625 (1994-08-01), None
patent: 8-153331 (1996-06-01), None
patent: 2001-184654 (2001-07-01), None
patent: WO 00/52684 (2000-09-01), None
Frommer William S.
Frommer & Lawrence & Haug LLP
Moise Emmanuel L
Pearson David J
Presson Thomas F.
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