FM Receiver with subcarrier decoding circuit

Details FM Receiver with subcarrier decoding circuit FM Receiver with subcarrier decoding circuit

1982-09-07

1984-10-09

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455 45, 455228, H04B 116, H03J 720

Patent

active

044765819

ABSTRACT:
To prevent loss of information during an announcement in a traffic or announcement recognition system in which, during radiation of an announcement, a subcarrier is modulated to a lesser degree by a radio station or region recognition frequency (RR) but to a higher degree by an announcement recognition (AR frequency) during an announcement only, and a logic circuit is included in the announcement decoder which recognizes

REFERENCES:
patent: 2361653 (1944-10-01), Roberts
patent: 3534266 (1970-10-01), Halstead
patent: 3535636 (1970-10-01), Muilwijk
patent: 3840811 (1974-10-01), Blouch
patent: 4009442 (1977-02-01), Von Bromssen
patent: 4181887 (1980-01-01), Place
patent: 4392248 (1983-07-01), Eckels et al.

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