05742521 is referenced by 170 patents and cites 6 patents.

The following invention is primarily concerned with new and improved systems for viewing a sporting event. In particular, systems which combine images of a real scene with computer generated imagery where the computer generated imagery is particular to the position and pointing attitude of the device. Being useful to spectators of the game baseball, the device can produce images showing where a strike zone is relative to the position of the players; can produce images of ball tracks; of replays and many other forms of information having characteristics dependent on a viewer's position and attitude.

Title
Vision system for viewing a sporting event
Application Number
119360
Publication Number
5742521
Application Date
September 14, 1994
Publication Date
April 21, 1998
Inventor
Peter Ellenby
La Jolla
CA, US
Thomas Ellenby
San Francisco
CA, US
John Ellenby
San Francisco
CA, US
Assignee
Criticom
CA, US
IPC
G06T 15/00
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