Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-12-29
1999-02-23
Saras, Steven
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 63, 345 72, G09G 322
Patent
active
058749322
ABSTRACT:
A plasma display device is capable of creating a screen of high quality without generating half tone noise in the succeeding frames irrespective of the arrangement or the turn-on state of the subframes in a preceding frame that is being displayed. A picture of a frame is displayed on a plasma display device by combining a plurality of subframes SF1 and Sfn having different degrees of brightness. Each of the plurality of subframes SF1 and Sfn includes a totally writing and totally self-erasing period S1, an address period S2, a sustain discharge period S3, and a quiescent period S4 determined by a difference between the sum of the periods S1 to S3 and a period of a vertical synchronizing signal Vsync. A period S5 for imparting a discharge waveform different from the sustain discharge waveform applied across the electrodes is provided in the sustain discharge period S3 between the quiescent period S4 in the predetermined frame FM1 and the totally writing and totally self-erasing period S1 in the succeeding frame FM2.
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Kanazawa Yoshikazu
Matsui Naoki
Nagaoka Keishin
Fujitsu Limited
Saras Steven
Suraci John
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