Radio broadcasting system with transmitter identification

Details Radio broadcasting system with transmitter identification Radio broadcasting system with transmitter identification

1978-02-17

1981-02-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 76, 375 52, H04H 500

Patent

active

042529956

ABSTRACT:
FM radio broadcasting system with transmitter identification by means of a transmitted subcarrier whose frequency is a harmonic of subharmonic of the stereo pilot and which is binary phase modulated with transmitter identification signals. In the transmitter the subcarrier is locked to the stereo pilot and the unmodulated wave, which is required for detection of the transmitter identification signal, is derived in the receiver from the received stereo pilot.

REFERENCES:
patent: 3242431 (1966-03-01), Crafts
patent: 3478169 (1969-11-01), Saito
patent: 3902019 (1975-08-01), Bruene
patent: 4048619 (1977-09-01), Forman et al.
Sherwood Advertisement in "Stereo Review", Nov. 1977.

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