United States Patent  [li] Patent Number: 4,855,827
Best [«] Date of Patent: Aug. 8,1989
 METHOD OF PROVIDING
IDENTIFICATION, OTHER DIGITAL DATA
AND MULTIPLE AUDIO TRACKS IN VIDEO
 Inventor: Robert J. Best, San Jose, Calif.
 Assignee: Worlds of Wonder, Inc., Fremon, Calif.
 Appl. No.: 76,036
 Filed: Jul. 21,1987
 Int. Q.4 H01N7/04
 U.S. a 358/143; 358/142
 Field of Search 358/142, 143, 144, 145,
 References Cited
U.S. PATENT DOCUMENTS
4,318,125 3/1982 Shutterly 358/145
4,321,623 3/1982 Rzeszewski 358/145
Primary Examiner—Edward L. Coles, Sr.
Assistant Examiner—Michael D. Parker
Attorney, Agent, or Firm—Blakely, Sokoloff, Taylor &
A method and apparatus for imbedding digital data and multiple audio (analog) track information in a video signal in a manner compatible with ordinary broadcast TV and transparent to a conventional television receiver is disclosed. The method and apparatus may provide multiple independent audio tracks and a substantial level of interaction with a viewer utilizing special reception equipment, which equipment may be utilized to provide a fully interactive system from signal sources not required to be compatible with convention receivers. The method and apparatus includes the ability of imbedding both analog and digital signals in a video signal, and while advantageous for interactive TV systems, may be used for a multitude of purposes in various video systems.
43 Claims, 6 Drawing Sheets