Radio transmitter system with special program identification

Details Radio transmitter system with special program identification Radio transmitter system with special program identification

1982-09-07

1984-10-09

Bookbinder, Marc E.

Telecommunications

Transmitter

Plural modulation

455 45, 455108, 332 17, 332 22, 370 11, H04B 104

Patent

active

044765770

ABSTRACT:
To permit mass-production of coders selectively usable in various types of transmitter installations, and regardless of whether designed for stereophonic or monophonic transmission, in which a subcarrier of non-audible frequency (57 kHz) is radiated, amplitude modulated by separate recognition signals characterizing intelligence information (AR, or announcement recognition) and a specific transmitter (region or radio station recognition, RR), a memory element (36) such as a PROM is provided, connected to a selector switch, the memory element having stored therein data representative of

REFERENCES:
patent: 3497625 (1970-02-01), Hileman et al.
patent: 3732507 (1973-05-01), Christiansen et al.
patent: 4003003 (1977-01-01), Heaberlin

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