Method of subcarrier multiplication which preserves AM Informati

Details Method of subcarrier multiplication which preserves AM Informati Method of subcarrier multiplication which preserves AM Informati

1991-12-03

1993-10-26

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

455102, 455218, 358160, H04B 700

Patent

active

052574032

ABSTRACT:
A multiplication circuit for use in an FM television transmitter and receiver is provided. The multiplication circuit includes a limiting circuit for limiting a subcarrier supplied thereto and a dividing circuit coupled to the limiting circuit and dividing the output of the limiting circuit by a predetermined factor. A mixer is coupled to the dividing circuit and mixes the output of the dividing circuit with the subcarrier.

REFERENCES:
patent: 2439661 (1948-04-01), Keever
patent: 2735001 (1956-02-01), Wittels
patent: 3778718 (1973-12-01), Bass et al.
patent: 4079204 (1978-03-01), Takahashi et al.
The Synchronous Communications Brochure.
The Cable World Technology New Article of Apr. 3, 1989.

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