Communicating on wandering channels

Details Communicating on wandering channels Communicating on wandering channels

1991-05-28

1994-01-18

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

380 34, H04L 2730

Patent

active

052804976

ABSTRACT:
For protection of communication against interception by frequent pseudorandom changing of the distribution of transmissions on channels, an input distributive switch is installed before the channel division device of a transmitting system and a similar output switch is installed after the channel division device of a receiving system. The distributive switches are controlled by synchronized pseudorandom generators and while the input switch repeatedly changes the distribution of transmissions on channels, and thereby channel of each transmission, the output switch directs all signals of each transmission to a fixed circuit defined for reception of that transmission.

REFERENCES:
patent: 2405991 (1946-08-01), Beverage et al.
patent: 3881099 (1975-04-01), Ailett et al.
patent: 4245341 (1981-01-01), Hoffman et al.
patent: 4700341 (1987-10-01), Huang
patent: 4755987 (1988-07-01), Lee et al.
patent: 4771420 (1988-09-01), Deschaine et al.

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