Secure communications system

Details Secure communications system Secure communications system

1969-07-22

1979-10-16

Hubler, Malcolm F.

Telegraphy

Systems

Printing

178 22, 179 15M, 179 15E, H04K 100, H04L 900

Patent

active

041715136

ABSTRACT:
A privacy communication system is herein disclosed comprising apparatus for digitizing information to be transmitted, apparatus for logically adding a selected pseudo-random digital code to the digitized information, apparatus for removing the pseudo-random code upon reception and apparatus for synchronizing the transmitted and received pseudo-random codes.

REFERENCES:
patent: 3038028 (1962-06-01), Henze
patent: 3153196 (1964-10-01), McGuire
patent: 3244808 (1966-04-01), Roberts
patent: 3303335 (1967-02-01), Pryor
patent: 3305636 (1967-02-01), Webb
patent: 3427399 (1969-02-01), Ehrat

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