Television signal transmission system
Patent 4660072 Issued on April 21, 1987. Estimated Expiration Date: 
April 21, 2004. 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.
April 21, 2004. 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 2686831 2716151 Television transmission system Patent #: 4520385 InventorAssigneeApplicationNo. 06/578528 filed on 02/09/1984US Classes:375/240.25, Specific decompression process360/24SPLITTING, PROCESSING AND RECOMBINING ONE INFORMATION SIGNAL FOR RECORDING OR REPRODUCING ON THE SAME TRACKExaminersPrimary: Shepperd, John W.Attorney, Agent or FirmInternational ClassesH04N 7/12 (20060101)H04N 11/00 (20060101) H04N 5/92 (20060101) H04N 11/24 (20060101) Foreign Application Priority Data1983-03-18 JPAbstractA television signal transmission system is improved to be able to transmit a video signal having a frequency band wider than existing transmission frequency bands while maintaining compatibility with existing television systems. On the sending side, a wide-band luminance signal is frequency-shifted and inserted into a vacant frequency spectrum of a television signal in the existing television systems before transmission.Other References
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