Digital information recording apparatus and...

Details Digital information recording apparatus and... Digital information recording apparatus and...

2008-01-28

2010-12-21

Truong, Thanhnga B (Department: 2438)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C380S201000, C705S051000, C705S057000, C386S349000, C360S060000

Reexamination Certificate

active

07856560

ABSTRACT:
In a digital information recording/reproducing apparatus, information recorded on a hard disk with copy restriction thereof is protected from being copied onto other hard disks by means of a PC, etc., to be produced a large number of illegal copies, i.e., infringing a copyright.The information is recorded onto a hard disk drive through encryption thereof, with using an identification being number unique thereto, when it is recorded onto the hard disk. With this, normal reproduction is prevented, since the drive identification number necessary for decryption is different from, even if it is copied onto the other hard disk. Also, a version information of the hard disc is memorized in an information management circuit. When the information is illegally copied onto the other hard disc, the version information is changes; therefore it does not coincide with the version information memorized in the information management circuit. With this, illegal reproduction of the information copied can be prohibited in the reproducing operation.

REFERENCES:
patent: 5896454 (1999-04-01), Cookson et al.
patent: 5917910 (1999-06-01), Ishiguro et al.
patent: 6085323 (2000-07-01), Shimizu et al.
patent: 6343281 (2002-01-01), Kato
patent: 6480607 (2002-11-01), Kori et al.
patent: 6674858 (2004-01-01), Kimura et al.
patent: 6711343 (2004-03-01), Matsumi et al.
patent: 6999588 (2006-02-01), Oishi
patent: 7254312 (2007-08-01), Yamada et al.
patent: 0849658 (1998-06-01), None
patent: 04-98552 (1992-03-01), None
patent: 10-312335 (1998-11-01), None
patent: 11-275516 (1999-10-01), None
patent: 2000-148417 (2000-05-01), None
patent: 2000-339223 (2000-12-01), None
patent: 2001-71908 (2001-03-01), None
patent: 2001-245223 (2001-09-01), None
patent: 2001-298705 (2001-10-01), None
patent: 2002-010189 (2002-01-01), None
Japan Patent Office (JPO) office action for JPO patent application JP2006-019976 (Aug. 18, 2009).
Japan Patent Office (JPO) office action for JPO patent application JP2006-019976 (Mar. 30, 2010).

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