Method of providing identification, other digital data and multiple audio tracks in video systems
Patent 4855827 Issued on August 8, 1989. Estimated Expiration Date: 
July 21, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 21, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSolid state digital audio scrambler system for teletransmission of audio intelligence through a television system Auxiliary television signal system Patent #: 4321623 InventorAssigneeApplicationNo. 07/076036 filed on 07/21/1987US Classes:348/485, Plural (e.g., stereo or SAP)348/473, Including additional information348/476During sync, blanking, or overscanExaminersPrimary: Coles, Sr., Edward L.Assistant: Parker, Michael D. Attorney, Agent or FirmInternational ClassesG09B 5/00 (20060101)G09B 5/06 (20060101) H04N 7/08 (20060101) H04N 9/802 (20060101) H04N 5/92 (20060101) AbstractA 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. | |
