05764275 is referenced by 130 patents and cites 42 patents.

A system for providing security on an interactive television system. Two sets of interactive data, with time stamps, are separately sent to a remote location. At the remote location, the time stamps are checked against a remote clock, a time difference being noted for both sets of data. The two time differences are compared to determine if one set of data has been delayed as compared to the other. Non-delayed data can be used to update a game score for an interactive game. After the game is completed, the remote clock is compared to a central clock. the difference between the two clocks are compared to the time difference for non-delayed data to determine whether the entire aggregate of interactive data was delayed.

Title
Interactive television security through transaction time stamping
Application Number
796085
Publication Number
5764275
Application Date
June 7, 1995
Publication Date
June 9, 1998
Inventor
Richard S Simons
Duluth
GA, US
Eric C Berkobin
Woodstock
GA, US
Cameron A Wilson
Marietta
GA, US
Wayne Y Yamamoto
Aurora
CO, US
Susan K Marshall
Greenwood Village
CO, US
John P Lappington
Lawrenceville
GA, US
Agent
Jeffrey D Carter
Assignee
Thomson Multimedia
FR
IPC
H04N 7/00
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