Programmable character fonts for a color-graphic crt display

Details Programmable character fonts for a color-graphic crt display Programmable character fonts for a color-graphic crt display

G - Physics

09

G

375/12

G09G 1/00 (2006.01) G09G 5/22 (2006.01)

Patent

CA 1224289

PROGRAMMABLE CHARACTER FONTS FOR A COLOR-GRAPHIC CRT DISPLAY ABSTRACT OF THE DISCLOSURE A system for producing a cathode ray tube display wherein the character fonts axe programmable is disclosed. The system utilizes a random access memory (18) in addition to a read only memory (16) for the storage of character fonts. The random access memory (18) is programmable via a microprocessor (12) for the entry of the desired character fonts therein. The microprocessor (12) can access either the read only memory (16) or the random access memory (18), via a display memory (20), for the retrieval of the proper character font for display on a chathode ray tube (38).

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