TVRO receiver system for locating audio subcarriers

Details TVRO receiver system for locating audio subcarriers TVRO receiver system for locating audio subcarriers

1985-10-21

1988-11-08

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455183, 455207, 455264, 455315, H04B 1116, H04B 126

Patent

active

047838485

ABSTRACT:
An improved satellite receiver system is provided which automatically locates audio signals among the various audio subcarriers received by an earth station; manual scanning of transmissions received from different transponders in order to locate audio signals embedded therein is eliminated. The improved receiver system does not require any input data characterizing the frequencies or bandwidth of the incoming audio signals and locates desired audio subcarriers in response to a command signal, without need for any manual intervention after generation of the command signal.

REFERENCES:
patent: 3742361 (1973-06-01), Wason
patent: 4053838 (1977-10-01), Amaya
patent: 4457006 (1984-06-01), Maine
patent: 4542533 (1985-09-01), Parker
patent: 4556988 (1985-12-01), Yoshisato
patent: 4575761 (1986-03-01), Carlson et al.
NEC Corporation, "Bipolar Analog Integrated Circuit" brochure, No. IC-1312A Nov. 1984.

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