Dual-modulation receiving apparatus

Details Dual-modulation receiving apparatus Dual-modulation receiving apparatus

1980-03-31

1981-02-03

Olms, Douglas W.

179 1GN, H04H 500

Patent

active

042490391

ABSTRACT:
Receiving apparatus, for a signal consisting of a carrier amplitude modulated by a first program and angle modulated by a second program, which delivers the programs separately and indicates a dual-modulation signal is being received, for use in a-m stereo and a-m dual-program systems.

REFERENCES:
patent: 4018994 (1977-04-01), Kahn
patent: 4105868 (1978-08-01), Takahashi et al.
patent: 4178553 (1979-12-01), Fisher et al.
patent: 4182932 (1980-01-01), Fisher et al.
Don Mennie, "AM Stereo: Five Competing Options," IEEE Spectrum, Jun. 1978, pp. 26-28.
Transmission Systems for Communications, 4th Edition, Bell Laboratories, pp. 116, 117, 118 & 125-128.
P. F. Panter, Modulation, Noise, and Spectral Analysis, McGraw-Hill 1965, pp. 524-527.
Reference Data for Radio Engineers, Fifth Edition, Howard Sams, p. 21-14.
H. S. Black, Modulation Theory, New York 1953, p. 48.
S. Prigozy, "Zero-Crossing Detector Provides Fast Sync Pulses," Electronics, Apr. 19, 1965, p. 91.
T. R. Ferrara, "Delayed Pulse Generator," EEE 13:10, p. 71.

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