Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-08-23
2005-08-23
Wu, Xiao (Department: 2674)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S063000, C345S690000, C315S169400
Reexamination Certificate
active
06933911
ABSTRACT:
A plasma display device comprises an area ratio detection means for detecting the area ratio of pixels having any luminance higher than a predetermined value in a display region; and a sustain frequency adjust means for adjusting, in accordance with the detected area ratio, the frequency or number of sustain pulses inputted to paired sustain electrodes in such a manner that the luminance in the display region satisfies a predetermined reference value. In this device, the frequency or number of the sustain pulses inputted to the paired sustain electrodes is adjusted in accordance with the detected area ratio, so that the luminance is always corrected to the reference value to thereby achieve proper expression of preset gradations.
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patent: 6496165 (2002-12-01), Ide et al.
patent: 6680732 (2004-01-01), Yoo
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patent: 2003/0090488 (2003-05-01), Yoo
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
Wu Xiao
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