Encoding of audio and digital signals in a video signal
Patent 4875096 Issued on October 17, 1989. Estimated Expiration Date: 
August 20, 2009. 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.
August 20, 2009. 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 References 3492432 3549795 3666888 3859458 3900887 3902007 3916092 Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels Color television signal including auxiliary information Signal multiplexing system InventorsAssigneeApplicationNo. 898268 filed on 08/20/1989US Classes:348/485, Plural (e.g., stereo or SAP)348/476, During sync, blanking, or overscan348/484Sound signalExaminersPrimary: Groody, James J.Assistant: Harvey, David E. Attorney, Agent or FirmForeign Patent References
International ClassH04N 007/04AbstractAudio signals and digital commands are encoded into a standard raster format television signal recorded on a casette for play by a home video cassette unit. The audio signals are encoded in the displayable video as modulated carrier pulses separated by return to median intervals with the audio waveforms being tapered near discontinuities. The digital commands are recorded as binary level pulses, one such pulse occupying substantially an entire video line to permit accurate decoding. | |
