Cadence suppression system

Details Cadence suppression system Cadence suppression system

1945-04-30

1980-07-22

Birmiel, Howard A.

179 15R, H04K 102

Patent

active

042141265

ABSTRACT:
1. A secret telecommunication system including a source of communication signals, a signal cadence suppression circuit including means responsive to the envelope of said communication signals for generating a spurious signal, means for combining said communication signals and said spurious signal, means for coding said combined signals, means for transmitting said coded combined signals, means for receiving and decoding said transmitted signals, spurious signal rejection means responsive to said received decoded signals for separating said spurious signal component from said communication signal component of said received decoded signals, and means for utilizing said separated communication signal component.

REFERENCES:
patent: 2413396 (1946-12-01), Weagant
patent: 2530140 (1950-11-01), Atkins
patent: 2530142 (1950-11-01), Atkins
patent: 3967067 (1976-06-01), Potter
patent: 3976839 (1976-08-01), Miller

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