Display control method and apparatus

Details Display control method and apparatus Display control method and apparatus

1995-10-25

1998-04-14

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

245 89, 245132, 245 3, G09G 510

Patent

active

057398089

ABSTRACT:
The present invention is to provide a display control method and apparatus which can display a high-quality image excellent in a gradation even if a resolution of a display device is higher than that of an input image. The display control apparatus which displays input image data of a first resolution on a display device of which a second resolution is higher than the first resolution comprises a calculation circuit for calculating a ratio of the first resolution to the second resolution, a determination circuit for determining the number of gradations on the basis of the ratio in case where the display device displays one pixel data of the input image data to a processing circuit for halftone processing the input image data to produce a value of the number of gradations determined by the a determination circuit and a data conversion circuit for converting the halftone-processed image data into data having a form which can be displayed on the display device.

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