Operator console with paired modules including means for cipheri

Details Operator console with paired modules including means for cipheri Operator console with paired modules including means for cipheri

1987-11-16

1989-09-26

Chan, Eddie P.

Boots, shoes, and leggings

380 42, 380 46, 235382, 2353825, 36494971, 364928, G06F 3023, G06F 758, H04L 900

Patent

active

048706124

ABSTRACT:
An operator console for data communication is divided into two separate units which can be connected electrically together, namely a keyboard (10) having a logical unit (21), with a memory (211) and a ciphering/deciphering circuit (22), and a security module (11). Connected between the input side of the keyboard (10) and the memory (211) is a security circuit which disconnects a conduit (240) to the keyboard memory (211), subsequent to a first transfer of a code from the security module (11), and connects instead a conductor (241) to the memory (211) from the ciphering/deciphering circuit (22).

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