Gray-scale font generating apparatus utilizing a blend ratio

Details Gray-scale font generating apparatus utilizing a blend ratio Gray-scale font generating apparatus utilizing a blend ratio

1992-08-07

1997-04-29

Herndon, Heather R.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345141, G06F 1500, G09G 524

Patent

active

056257724

ABSTRACT:
A gray-scale display device such as a general display for a personal computer or work station, a laser printer or a color printer. A gray-scale font generating apparatus used in the display device includes an input unit for inputting the information representative of a font code, and control unit for acquiring a blend ratio in accordance with the ratio of a font area and a background area in the contour of the shape data of the font corresponding to the information representative of a font code, and making the gradation display of the font with the blend ratio thus acquired. Since the blend ratio is acquired without using work memory, a gray-scale font can be created and output at high speed.

REFERENCES:
patent: 4851825 (1989-07-01), Naiman
patent: 4908780 (1990-03-01), Priem et al.
patent: 5068803 (1991-11-01), Valdes et al.
patent: 5123085 (1992-06-01), Wells et al.
patent: 5276790 (1994-01-01), Lo et al.

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