Graphic display system for personal computer

Details Graphic display system for personal computer Graphic display system for personal computer

1985-04-30

1988-08-09

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340748, 340703, G09G 116

Patent

active

047631180

ABSTRACT:
A graphic display circuit for driving a graphic display comprises a programmable character generator for storing character font data, a video RAM for storing display code data corresponding to characters in said font, an attribute RAM for storing block selection data for selecting one of the blocks of the character generator defining attributes of the character font data, and a controller for controlling the video RAM and attribute RAM.

REFERENCES:
patent: 3996584 (1976-12-01), Plager
patent: 4183046 (1980-01-01), Dalke et al.
patent: 4504828 (1985-03-01), Couper et al.
patent: 4520356 (1985-05-01), O'Keefe et al.
patent: 4563677 (1986-01-01), Seiler
patent: 4613856 (1986-09-01), Olin et al.

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