Systems and methods of providing content protection for...

Details Systems and methods of providing content protection for... Systems and methods of providing content protection for...

2005-01-28

2008-12-09

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S200000, C380S201000

Reexamination Certificate

active

07464271

ABSTRACT:
A digital watermark is affixed to an existing image file prior to being copied onto a destination media. In one embodiment, the image file is encrypted using content scrambling system (CSS) encryption. In another embodiment, the image file is also compressed prior to being copied onto the destination digital video media. A unique identification code associated with an intended recipient may be embedded into the digital watermark. In one embodiment, this unique identification code is stored in a database, along with information particular to the intended recipient. In this fashion, the identity of the intended recipient of the destination digital video media may be determined.

REFERENCES:
patent: 6226618 (2001-05-01), Downs et al.
patent: 6671387 (2003-12-01), Chen et al.
patent: 6700989 (2004-03-01), Itoh et al.
patent: 6735699 (2004-05-01), Sasaki et al.
patent: 6961853 (2005-11-01), Marshall

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