Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2004-10-14
2008-09-16
Nguyen, Chanh (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S063000
Reexamination Certificate
active
07425936
ABSTRACT:
A driving apparatus for plasma display panel and a gray level expressing method thereof that reduces pseudo-contour. A row average gray level value is calculated through simulation after displaying a test image with different gray levels, and the respective gray levels are classified into a plurality of gray level groups according to the probability of pseudo-contour. The gray level conversion is performed differently according to the plural gray level groups. The gray level values of two frames input consecutively and the illuminating patterns of the subfields are compared to detect the pseudo-contour, and the detecting result is applied to the gray level groups to perform the different gray level conversions.
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Christie Parker & Hale LLP
Nguyen Chanh
Samsung SDI & Co., Ltd.
Snyder Adam J
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