Encipering- and deciphering apparatus in the form of a typewrite

Details Encipering- and deciphering apparatus in the form of a typewrite Encipering- and deciphering apparatus in the form of a typewrite

1976-11-19

1982-09-21

Birmiel, Howard A.

Telegraphy

Systems

Printing

178 2212, 178 2219, H04L 902

Patent

active

043508448

ABSTRACT:
An enciphering and deciphering apparatus in the form of a typewriter having an input device for the input of characters to be processed, a control device for the input of control commands determining the mode of operation of the apparatus and an output device possessing at least one page printer. A display device is connectable with the input device for the stepwise progressive display of the infed characters. The output side of the display device can be selectively connected with the printer, with a cipher computer or a key character storage associated with the cipher computer. The cipher computer has its output side connectable with the printer. A central control unit is provided which can be controlled by the control device. The central control unit fixes as a function of the infed control commands the data routes in the apparatus and controls the components of the apparatus, and depending upon the infed control commands the printer receives and prints the characters displayed by the display device or the characters produced by the cipher computer.

REFERENCES:
patent: 3057955 (1962-10-01), Hirsch
patent: 3083263 (1963-03-01), Hagelin et al.
patent: 3229037 (1966-01-01), Sturzinger et al.
patent: 3267213 (1966-08-01), Berger
patent: 3291908 (1966-12-01), Ehrat
patent: 3485948 (1969-12-01), Hagelin
patent: 3670104 (1972-06-01), Abrahamsen
patent: 3878332 (1975-04-01), Morgan et al.
patent: 3976995 (1976-08-01), Sebestyen
patent: 4016365 (1977-04-01), Staar

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