Method for preventing "compromising radiation"

Details Method for preventing "compromising radiation" Method for preventing "compromising radiation"

1982-07-15

1986-01-07

Cangialosi, Salvatore

Telegraphy

Systems

Printing

178 2209, 178 2219, 179 15M, H04K 102

Patent

active

045635463

ABSTRACT:
A method of preventing "compromising radiation" when processing and transmitting secret data information in data processing and long-distance data transmission systems. In addition to direct, physical shielding and/or decoupling of the data signals, a code converter of per se known construction is employed which acts indirectly in the plane of the logic processing or coding of the information and which additionally processes the secret data in such a manner that at any point in time during further processing or during transport the sum of the values "0" in the data signal is equal to the sum of the values "1" so that practically no "compromising radiation" is generated thereby since the physical signals reaching the environment no longer contain any analyzable information.

REFERENCES:
patent: 3077518 (1963-02-01), Guanella
patent: 3133991 (1964-05-01), Guanella
patent: 3634665 (1972-01-01), Carter et al.
patent: 4176247 (1979-11-01), Englund
patent: 4177355 (1979-12-01), Fleisher et al.
patent: 4225962 (1980-09-01), Meyr et al.
patent: 4283602 (1981-08-01), Adam et al.
patent: 4404426 (1983-09-01), Safford
patent: 4447672 (1984-05-01), Nakamura
S 0309 0091, Elektronik, vol. 28 (1979), No. 23, pp. 51-51, Budzinski, "Data Encryption with Single Chip Computers".
L. Balliet and T. J. Wylie, "Four/Six-Block Transmission Code", IBM Technical Disclosure Bulletin, vol. 22, No. 8B, Jan. 1980, pp. 3547-3550.

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