07162642 is referenced by 128 patents and cites 4 patents.

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.

Title
Digital content distribution system and method
Application Number
9/880856
Publication Number
7162642 (B2)
Application Date
June 15, 2001
Publication Date
January 9, 2007
Inventor
Richard Vitkus
Richmond
VA, US
Jack Ehrhardt
Richmond
VA, US
Michael Bergeron
Poway
CA, US
Guillaume Mercier
McLean
VA, US
Siu Leong Iu
San Jose
CA, US
David William Kravitz
Fairfax
VA, US
David Mosche Goldschlag
Silver Spring
MD, US
Richard Whittemore
Herndon
VA, US
Robert Wilhelm Schumann
Oakton
VA, US
Agent
David G Grossman
Assignee
Digital Video Express
VA, US
IPC
H04L 9/32
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