FM Stereophonic receiver with CPU controlled tuning and demodula

Details FM Stereophonic receiver with CPU controlled tuning and demodula FM Stereophonic receiver with CPU controlled tuning and demodula

1981-08-31

1984-06-12

Pellinen, A. D.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381 12, 381 13, H04H 500

Patent

active

044546076

ABSTRACT:
An FM stereophonic receiver is arranged so that a central processing unit assigned for selection of a broadcasting station is burdened, based on a clock pulse of the central processing unit, to generate sub-carriers synchronized with a pilot signal contained in a composite signal, for being used in multiplex demodulation, whereby to improve signal-to-noise ratio of the multiplex demodulated signals, and to simplify the circuit arrangement of the receiver.

REFERENCES:
patent: 4232393 (1980-11-01), Kumaoka et al.
patent: 4291414 (1981-09-01), Kimura
patent: 4323731 (1982-04-01), Hershberger
Hirose et al., "Application of Microcomputer to Frequency-Synthesized AM/FM Radio Tuning System", National Technical Report, vol. 25, No. 4, Aug. 1979, pp. 705-713, S03890070, 455-154.

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