Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-09-30
2000-06-06
Chow, Dennis-Doon
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
340 60, G09G 328
Patent
active
06072448&
ABSTRACT:
The plasma display device has a plasma display panel and a driving part for driving the plasma display panel in a subframe mode. The driving part has a circuit for calculating the length of one frame based on one period of a vertical synchronizing signal introduced along with an image signal from an external device, a circuit for calculating the total number of sustaining pulses contained in one frame based on a brightness information contained in the image signal, and a circuit for calculating the length of one driving period required for displaying one frame. The length of one frame and the length of one driving period thus obtained are then compared in a comparing circuit. If the one frame length is found to be shorter than the one driving length, the total number of sustaining pulses or the number of scan lines will be reduced so that the one frame length becomes shorter than the length of one driving period, thus avoiding an extraordinary display.
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Patent Abstracts of Japan, vol. 96, No. 7, Jul 31, 1996 & JP 08-076716 A (Pioneer Electronics Corp.), Mar. 22, 1996.
Ishida Katsuhiro
Kojima Ayahito
Kuriyama Hirohito
Tajima Masaya
Yamamoto Akira
Chow Dennis-Doon
Fujitsu Limited
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