Secrecy system

Details Secrecy system Secrecy system

1954-05-24

1980-06-17

Birmiel, Howard A.

Telegraphy

Systems

Printing

35 4, H04L 900

Patent

active

042085454

ABSTRACT:
1. In a system of secret telegraph communication, an incoming channel over which miscellaneous matter intelligence signals are periodically received, an outgoing channel susceptible of operating at a higher speed than said incoming channel, a cipher unit interconnecting said channels, said unit comprising a signal storage device, means controlled by said storage device for periodically generating special supervisory signals for compensating for the speed difference between said channels, a fan circuit connected to said storage device, a ciphering maze connected to said fan circuit, means for inserting masking signals during pauses between said periodically received miscellaneous matter intelligence signals, means for inserting said supervisory signals upon transitions from said received miscellaneous intelligence signals to said masking signals and vice versa, and means operable automatically upon encipherment of all said signals for transmitting the enciphered signals over said outgoing channel.

REFERENCES:
patent: 2406023 (1946-08-01), Locke
patent: 2632057 (1953-03-01), Koening, Jr.

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