Digital tone generator for use with radio transmitters and the l

Details Digital tone generator for use with radio transmitters and the l Digital tone generator for use with radio transmitters and the l

1976-04-19

1977-09-06

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

325 64, 328 14, 328 55, G06F 1534, H04B 116

Patent

active

040470091

ABSTRACT:
Many radio continuous tone controlled squelch systems use a digitally generated tone. A digital adder is provided for the digital tone generator to introduce a phase shift to the tone to indicate that a radio transmission is ending.

REFERENCES:
patent: 2974221 (1961-03-01), Peth
patent: 3529250 (1970-09-01), Farrow et al.
patent: 3657657 (1972-04-01), Jefferson
patent: 3686469 (1972-08-01), Clark et al.
patent: 3833854 (1974-09-01), Schonover
patent: 3838414 (1974-09-01), Wiles
patent: 3962645 (1976-06-01), Stewart
F. J. Lebert, "Walsh Function Generator for a Million Different Functions", Walsh Function Proceedings, Wash. D. C., 3-31-70.

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