Processing copy protection signals

Details Processing copy protection signals Processing copy protection signals

2007-12-18

2007-12-18

Revak, Christopher (Department: 2131)

Information security

Prevention of unauthorized use of data including prevention...

C713S176000, C713S179000, C705S057000

Reexamination Certificate

active

10240913

ABSTRACT:
A method and device if or recording an information signal with first copy protection information to a storage medium includes recording according to first copy rules identified by the first copy protection information. The first copy protection information identifying the first copy rules is detected, and at least second copy protection information is recorded according to the detected first copy rules. The first and second copy protection information identify a legality message to be interpreted by reader. Screening information is recorded in a safe way on the storage medium to identify that the first copy protection message has been read.

REFERENCES:
patent: 6700989 (2004-03-01), Itoh et al.
patent: 6701062 (2004-03-01), Talstra et al.
patent: 6937553 (2005-08-01), Mitui et al.
patent: 0969462 (2000-01-01), None
patent: 0969462 (2000-01-01), None
patent: 1005040 (2000-05-01), None
“System Issues in Digital Image and Video Watermarking for Copy Protection”, by T. Kalker, Philips Research Eindhoven, pp. 562-567 . XP-002132684, no date provided.

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