Textiles: ironing or smoothing
Patent
1986-03-26
1987-12-08
Isen, Forester W.
Textiles: ironing or smoothing
358144, 375 18, H04H 500, H04N 704
Patent
active
047122404
ABSTRACT:
A method and apparatus for modulating and demodulating a digitized stereo audio signal with a 3-level, partial response waveform. The 3-level, partial response waveform utilizes 3-level coded pulses rather than conventional on-off or 2-level coded pulses. This results in a bandwidth reduction of approximately 50% over the conventional 2-level coded pulses and allows the stereo audio signal to be transmitted within the bandwidth limitations of conventional television transmission systems, without first compressing or reducing the sampling rate of the stereo audio signal. For transmission over statellite-based systems, the modulated stereo audio signal is digitally up-converted to a 6.6 MHz quadrature subcarrier. For transmission over ground-based systems, the modulated audio signal is multiplexed into the video signal during the video horizontal blanking interval.
REFERENCES:
patent: 3723637 (1973-03-01), Fujio et al.
patent: 3916092 (1975-10-01), Justice
patent: 4114710 (1978-09-01), Katoh
patent: 4266243 (1981-05-01), Shutterly
patent: 4318125 (1982-03-01), Shutterly
patent: 4321623 (1982-03-01), Rzeszewski
patent: 4535356 (1985-08-01), Nakagawa et al.
patent: 4558454 (1985-12-01), Hills et al.
Goldstein Sol L.
Heal Noel F.
Isen Forester W.
TRW Inc.
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