G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/14 (2006.01) G09G 3/28 (2006.01)
Patent
CA 2181211
In a display device in which each group of plural drive elements 10 takes charge of the drive of plural picture elements (pixels) and the display luminance changes as the number of sustaining pulses changes that are supplied to PDP16, a constant emission luminance characteristic is maintained by increasing the number of sustaining pulses for larger load when the display load factor is large, and decreasing the number of sustaining pulses for smaller load when the display load factor is small. When displaying multi-tone image by subfield drive method, a display area detect circuit 20 allows to display image always with constant luminance characteristic despite the variation of the display load factor, and to prevent the deterioration of tone characteristic due to the subfield drive method, and further a half tone display circuit 30 allows to decrease the bit number thereby simplifying the configuration of the display area detect circuit 20.
Aida Toru
Denda Hayato
Kobayashi Masayuki
Kosakai Asao
Matsunaga Seiji
Canon Kabushiki Kaisha
Fujitsu General Limited
Gowling Lafleur Henderson Llp
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