Terminal key locking system

Details Terminal key locking system Terminal key locking system

1994-08-26

1996-03-19

Kuntz, Curtis

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345169, G09G 302

Patent

active

055006558

ABSTRACT:
An information processor equipment in use for a terminal key locking system includes: an input key device for inputting data; a terminal key locking unit for locking the input key and generating a plurality of mode signals concurrently with the locking; a plurality of gates corresponding to the modes and connected to a plurality of controllers the output of which is connected to a display control unit; a display unit connected to the display controller, for displaying picture signals; a first memory device connected to the display control unit for saving operating display information; and a second memory device connected to the display control unit for storing in advance picture signals representing each discriminated mode signal; wherein the previously stored picture signals are displayed in correspondence to one of the modes and when the lock is released, an original operative picture signal is returned to the display unit, and wherein the gates are respectively operated according to incoming mode signals.

REFERENCES:
patent: 4458238 (1984-07-01), Learn
patent: 4639225 (1987-01-01), Washizuka
patent: 4992779 (1991-02-01), Sugino et al.
patent: 5165012 (1992-11-01), Crandall et al.

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