Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2011-03-01
2011-03-01
Awad, Amr (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S089000, C345S211000, C345S212000
Reexamination Certificate
active
07898555
ABSTRACT:
A generation circuit generates gray scale voltages having a plurality of levels for positive polarity and gray scale voltages having a plurality of levels for negative polarity; wherein said generation circuit, in the mode in which the number of colors to be displayed on a display panel is small, decreases a current flowing into an internal circuit which generates a gray scale voltage of an intermediate level other than two gray scale voltages of a gray scale voltage of the most lowest level and a gray scale voltage of the most highest level among the gray scale voltages of said plurality of levels, in comparison to a current flowing in the other mode; and wherein said selection circuit, in the mode in which the number of colors to be displayed on said display panel is small, selects said gray scale voltage according to said display data, from the two gray scale voltages of said most lowest level gray scale voltage and said most highest level gray scale voltage which are generated from said generation circuit.
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Hitachi's New Release, May 17, 2001.
Akai Akihito
Higa Atsuhiro
Kudo Yasuyuki
Kurokawa Kazunari
Ookado Kazuo
Antonelli, Terry Stout & Kraus, LLP.
Awad Amr
Hitachi , Ltd.
Pervan Michael
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