05754649 is referenced by 89 patents and cites 21 patents.

A video disc designed for providing security and tracking data in the rental video media market. Those new formats for video players and media allow for inclusion of security features which both allow tracking of rental of such media and prevent unauthorized rental thereof Each player includes a decision circuit which plays a particular optical disc only if a player identification number recorded on a special separate magnetic track on the optical disk is the same as the player identification stored in the player, and if a movie identification number optically read from the disc matches a movie identification number recorded on the special separate magnetic track. A corresponding apparatus is provided at the video rental store which, at the time of rental, records on a magnetic portion of the media in encrypted form the movie identification number and the number of the particular disc player for which that rental is intended. The authorization encryption uses the private key of a public key system, the public key and the modulus being pre-recorded on the optical portion of the disc.

Title
Video media security and tracking system
Application Number
440194
Publication Number
5754649
Application Date
June 23, 1997
Publication Date
May 19, 1998
Inventor
Gregory C Copeland
San Jose
CA, US
E Fraser Morrison
Redwood City
CA, US
John O Ryan
Cupertino
CA, US
Agent
Gerow D Brill
Assignee
Macrovision
CA, US
IPC
G06F 1/00
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