Display control method and apparatus for performing high-quality

Details Display control method and apparatus for performing high-quality Display control method and apparatus for performing high-quality

1994-10-24

1997-12-16

Wu, Xiao

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 98, 345 99, 345 93, G09G 336

Patent

active

056990766

ABSTRACT:
During a vertical blank period, in order to prevent generation of noise lines, a display controller outputs the same video data FVD as that of a display final line as dummy data of a vertical blank period start line, and outputs, in advance, video data to be displayed on a display start line in the next frame cycle as dummy data of a vertical blank period final line. The display controller also output a shift clock together with these dummy data. As a result, both upon a change from the display period to the vertical blank period and upon a change from the vertical blank period to the display period, a video data value difference can be eliminated, and generation of noise lines can be prevented.

REFERENCES:
patent: 4679043 (1987-07-01), Morokawa
patent: 5138305 (1992-08-01), Tomiyasu
patent: 5309168 (1994-05-01), Itoh
patent: 5512915 (1996-04-01), Leroux

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