Isolator/switching assembly for data processing terminal

Details Isolator/switching assembly for data processing terminal Isolator/switching assembly for data processing terminal

1976-08-23

1981-01-06

Buczinski, Stephen C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

361390, G02B 2700, H05K 500

Patent

active

042438900

ABSTRACT:
The present disclosure describes an isolator/switching assembly for use in a message terminal system. The assembly permits a pair of electronic data processors, one on-line and the other a back-up unit, each processing confidential or so called "red" data, to interface with each other and both units to interface with and control a common peripheral device or I/O port. At the same time, the assembly provides physical and electrical isolation between the processor and the peripheral device and insures the TEMPEST security of the entire system.

REFERENCES:
patent: 3493760 (1970-02-01), Hoadley
patent: 3629590 (1971-12-01), Case
patent: 3792208 (1974-02-01), Meyer
Clapper et al., IBM Tech. Discl. Bul., vol. 16, No. 11, 4-1974, pp. 3523, 3524.

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