Method of and means for generating complex electrical coding wav

Details Method of and means for generating complex electrical coding wav Method of and means for generating complex electrical coding wav

1944-07-22

1980-11-04

Birmiel, Howard A.

Telegraphy

Systems

Printing

331 78, H04K 904

Patent

active

042321867

ABSTRACT:
10. Apparatus for generating a complex wave comprising means for generating a plurality of different concurrent short period series of pulses, a plurality of electrical networks, means for applying a different one of said series of pulses to each of said electrical networks, means for deriving a plurality of differently delayed unmodulated pulse signals from each of said networks in response to said applied series of pulses, means for combining said derived signals from predetermined ones of said networks, and means for selecting in a predetermined manner said delayed signal components, and means for deriving from said selected signal components a complex wave having a period longer than either of said selected pulse periods, said complex wave having a substantially longer period than either of said short period pulse series.

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patent: 2403561 (1946-07-01), Smith
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