Apparatus and method for CRT display screen

Details Apparatus and method for CRT display screen Apparatus and method for CRT display screen

1985-08-02

1988-02-23

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340750, 340792, 400109, G09G 116

Patent

active

047273666

ABSTRACT:
The video memory of a CRT display system is split into an application video memory and a CRT memory. The two memories are interconnected by logic means for manipulating primary and secondary texts whose characters proceed in directions which are different from each other. The character codes are applied to the application video memory. The logic manipulates the code in accordance with the rules of the primary and secondary languages and provides data to the CRT video memory for driving a CRT controller.

REFERENCES:
patent: 4205310 (1980-05-01), McMann, Jr. et al.
patent: 4507734 (1985-03-01), Kaldas
"Writing Orientation for a Display Terminal", IBM Technical Disclosure Bulletin, vol. 28, No. 2, Jul. 1985, p. 746.
Batey, M. A. et al., "Dual Direction Keying Display", IBM Technical Disclosure Bulletin, vol. 22, No. 1, Jun. 1979, pp. 376-388.
Johnson, C. F., et al., "Modified `Mixed Text` Function for an Electronic Typewriter", IBM Technical Disclosure Bulletin, vol. 24, No. 4, Sep. 1981, pp. 1829-1836.
Warnecke, C. G., "Mixed Left-Right, Right-Left Display", IBM Technical Disclosure Bulletin, vol. 24, No. 8, Jan. 1982, pp. 4305-4307.

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