Information security – Prevention of unauthorized use of data including prevention...
Reexamination Certificate
1999-09-23
2009-12-08
Pich, Ponnoreay (Department: 2435)
Information security
Prevention of unauthorized use of data including prevention...
C713S189000, C705S050000, C705S051000
Reexamination Certificate
active
07631358
ABSTRACT:
A method of protection against the copying of digital data stored on an information carrier envisages, on the basis of a first identification of an encryption of the digital data and of a second identification of a watermarking of digital data, the determination of a first mark if it has been possible to identify the encryption and the watermarking. A third identification of a type of the information carrier is followed by the determination of a second mark if it has been possible to determine the first mark and if it has been possible to identify a determined type of information carrier. A fourth identification of cryptographic signature data accompanying the digital data is followed by the determination of a third mark if it has been possible to determine the second mark and if it has been possible to identify a cryptographic signature datum. A permission for digital copying of the digital data is delivered if it has been possible to determine the third mark.
REFERENCES:
patent: 4937679 (1990-06-01), Ryan
patent: 5613004 (1997-03-01), Cooperman et al.
patent: 5694381 (1997-12-01), Sako
patent: 5842023 (1998-11-01), Tsumura
patent: 6209092 (2001-03-01), Linnartz
patent: 6246802 (2001-06-01), Fujihara
patent: 6256390 (2001-07-01), Okuyama
patent: 6266477 (2001-07-01), Ichinoi
patent: 6314518 (2001-11-01), Linnartz
patent: 6393568 (2002-05-01), Ranger et al.
patent: 6553070 (2003-04-01), Hashimoto
patent: 6882728 (2005-04-01), Takahashi et al.
patent: 2002/0003879 (2002-01-01), Ibaraki et al.
patent: 413350 (1991-02-01), None
patent: 416663 (1991-03-01), None
patent: 735752 (1996-10-01), None
patent: 6-334616 (1994-12-01), None
patent: 7-288798 (1995-10-01), None
patent: 09-055025 (1997-02-01), None
patent: 9-160899 (1997-06-01), None
patent: 10-155151 (1998-06-01), None
patent: 10-241288 (1998-09-01), None
patent: 10-243398 (1998-09-01), None
patent: 96/00963 (1996-01-01), None
patent: 97/33283 (1997-09-01), None
Chevreau Sylvain
Furon Teddy
Ferguson Catherine A.
Opalach Joseph J.
Pich Ponnoreay
Shedd Robert D.
Thomson Licensing
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