Cryptography – Cryptanalysis
Patent
1988-07-27
1990-02-20
Buczinski, Stephen C.
Cryptography
Cryptanalysis
379 62, 455 89, 455 98, H04K 100
Patent
active
049032984
ABSTRACT:
A data communication system for an aircraft includes a voice encryption unit that is selectably included in the audio path between a user and a radio. The data communication system is interconnected so that the unencrypted audio path of a user is isolated from other users, thus providing the user with a secure, private communications link within the aircraft, as well as between the aircraft and a ground station. The system includes an audio path from the cockpit to the encryption unit and an audio path from the passenger cabin to the encryption unit, and further includes a control unit in each of the cockpit and the cabin so that control of the encryption unit can be selectably switched between the cockpit and the passenger cabin.
REFERENCES:
patent: 2463502 (1949-03-01), Atkins
patent: 3541258 (1970-11-01), Doyle et al.
patent: 4325141 (1982-04-01), Ghose
patent: 4584707 (1986-04-01), Goldberg et al.
patent: 4747158 (1988-05-01), Goldberg et al.
patent: 4763351 (1988-08-01), Lipscher et al.
"Intercompany Confidential" slide presentation produced by the Applicant, Summer 1986.
SSC-200 Communication Security System brochure, The Cline Corporation, Sep. 1987.
CYCOMM-1000 Series Voice Scrambler brochure, CYCOMM, Inc.
Buczinski Stephen C.
Gregory Bernarr Earl
Sunstrand Data Control, Inc.
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