Digital content distribution system and method

Details Digital content distribution system and method Digital content distribution system and method

2007-01-09

2007-01-09

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S193000, C713S176000, C726S026000, C726S027000, C726S030000

Reexamination Certificate

active

09880856

ABSTRACT:
A content distribution system and method which prevents unauthorized access to secured content such as movies and music. The apparatus includes a source, a receiver, an authorized security device such as a conditional access module (CAM) for decrypting authorized content, an output device for outputting content and a backend for managing accounts and system operations. One aspect of this invention provides a mechanism for providing secured content on a medium such as a DVD optical disc. These devices may verify that there is authorization to play the secured content, add watermarks to the secured content, convert the secured content to a displayable form and provide a means for preventing output of the secured content.

REFERENCES:
patent: 5796829 (1998-08-01), Newby et al.
patent: 6266415 (2001-07-01), Campinos et al.
patent: 6530021 (2003-03-01), Epstein et al.
patent: 6628891 (2003-09-01), Vantalon et al.

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