Extended definition widescreen television signal processing system
Patent 5025309 Issued on June 18, 1991. Estimated Expiration Date: June 18, 2008. 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.
An NTSC compatible, single broadcast channel, widescreen EDTV system encodes and decodes a television signal comprising four components: (1) a main, standard format NTSC signal with low frequency side panel image information compressed into the overscan regions thereof; (2) time expanded high frequency side panel image information; (3) extended high frequency horizontal luminance image information; and (4) vertical-temporal luminance image information. Components (2) and (3) are intraframe averaged and quadrature modulate an alternate subcarrier, e.g., at 3.108 MHz, to produce a modulated signal. The modulated signal is summed with component (1) after intraframe averaging to produce an NTSC compatible 4.2 MHz baseband signal. This signal and component (4) quadrature modulate an RF picture carrier to produce an NTSC compatible RF broadcast signal for transmission via a single broadcast channel.
Other References
"A Single Channel HDTV Broadcast System--The Muse"--Minomiya et al., NHK Corporation Laboratories Note, No. 304, Sep. 1984
"A Proposal for a New High-Definition NTSC Protocol", R. J. Iredale, IEEE Transactions on Consumer Electronics, vol. CE-33, No. 1, Feb. 1987, pp. 14-27
"ENTSC Two-Channel Compatible HDTV System"--Tsinberg et al., IEEE Transactions on Consumer Electronics, vol. CE-33, No. 3, Aug. 1987, pp. 146-153
"An Extended Definition Television System Using Quadrature Modulation of the Video Carrier with Inverse Nyquist Filter", Yasumoto et al., IEEE Transactions on Consumer Electronics, Aug. 1987, vol. CE-33, No. 3, pp. 173-180
"A Fully Compatible Extended Definition Television System Transmitting High Components of Luminance and Chrominance", S. Inoue et al., (Matsushita Corp.)
"A Fully Capatible Extended Definition Television System Capable of Increasing the Aspect Ratio", Yasumoto et al., (Matsushita Corp.)
"Extended Definition TV Fully Compatible with Existing Standards", Fukinuki et al., IEEE Transactions on Communications, vol. COM-32, No. 8, Aug. 1984, pp. 948-953
"High Definition Television Systems: Desirable Standards, Signal Forms, and Transmission Systems", T. Fujio, IEEE Transactions on Communications, COM-29, Dec. 1981, pp. 1882-1891
"Development of High-Definition TV Displays", T. Kubo, IEEE Transactions on Broadcasting, BC-28, No. 2, Jun. 1982, pp. 51-64
"A 70-mm Film Laser Telecine for High Definition Television", T. Ishida et al., SMPTE Journal, vol. 92, No. 6, Jun. 1982, pp. 629-635
"Channel Matching Techniques for 2-Channel Television", C. Basile, IEEE Transactions on Consumer Electronics, CE-33, No. 3, Aug. 1987, pp. 154-161
"Decomposition and Recombination of a Wide Aspect Ratio Image for ENTSC Two-Channel Television", A. Cavallerano et al., IEEE Transactions on Consumer Electroics, CE-33, No. 3, Aug. 1987, pp. 162-172
"HDTV Compatible Transmission System", W. E. Glenn et al., SMPTE Journal, vol. 96, No. 3, Mar. 1987, pp. 242-246
"A Compatible High-Definition Television System (SLSC) with Chrominance and Aspect Ratio Improvements", J. L. LoCicero, SMPTE Journal, vol. 94, No. 5, May 1985, pp. 546-558
"Improved Television Systems: NTSC and Beyond", W. F. Schreiber, SMPTE Journal, vol. 96, No. 8, Aug. 1987, pp. 734-744
"6-MHz Single-Channel HDTV Systems", W. F. Schreiber, presented at the HDTV Colloquium, Ottawa, Canada, Oct. 4-8, 1987
"A Single Channel NTSC Compatible Widescreen EDTV System", M. A. Isnardi et al., presented at the HDTV Colloquium, Ottawa, Canada, Oct. 4-8, 1987
"Cooperative Processing for Improved Chrominance/Luminance Separation", C. H. Strolle, SMPTE Journal, vol. 95, No. 8, Aug. 1986, pp. 782-789
"Experiments on Proposed Extended-Definition TV with Full NTSC Compatibility", T. Fukinuki et al., SMPTE Journal, vol. 93, No. 10, Oct. 1984, pp. 923-929
"Digital Video Processing Facility with Motion Sequence Capability", C. H. Strolle et al., ICCE Digest of Technical Papers, Jun. 5-7, 1985, pp. 178-179
"Exploring and Exploiting Subchannels in the NTSC Spectrum", M. A. Isnardi, presented at the 129th SMPTE Conference, Los Angeles, Oct. 31-Nov. 4, 1987
"A System for Artifact Free NTSC Encoding and Decoding", M. Tsinberg et al., IEEE Transactions on Consumer Electronics, CE-32, No. 3, Aug. 1986, pp. 228-236
"A Compatible HDTV System (SLSC) with Chrominance and Aspect Ratio Improvements (1,2)", J. L. LoCicero et al., Symposium, Joint Sessions, Montreux, CH, Jun. 8, 1985, pp. 324-349
Fukinuki et al., Experiments on Proposed Extended-Definition TV with Full NTSC Compatibility, SMPTE Journal, Oct. 1984, pp. 923-929
Turner, Some Thoughts on Using Comb Filters in the Broadcast Television Transmitter and at the Receiver, IEEE Transactions on Consumer Electronics vol. CE-23, No. 3, Aug. 1977, p. 248-25
June 18, 2008. 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.
