Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2011-05-17
2011-05-17
Dharia, Prabodh M (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S691000, C345S692000
Reexamination Certificate
active
07944458
ABSTRACT:
A digital-analog converter (DAC) including: a gray scale generator for generating gray scale voltages corresponding to digital data input through charge sharing between a plurality of data lines and a plurality of dummy data lines; a switching signal generator for providing operation control signals for a plurality of switches of the gray scale generator; and a reference voltage generator for generating reference voltages and for providing the reference voltages to the gray scale generator. According to the present invention, the digital-analog converter uses capacitance components existing in the respective data lines and the dummy data lines as a sampling capacitor and a holding capacitor to generate desired gray scale voltages through charge sharing between the data lines and the dummy data lines, thereby reducing area and power consumption over an existing R-string type of DAC.
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Choi Byong Deok
Kwon Oh Kyong
Christie Parker & Hale LLP
Dharia Prabodh M
Samsung Mobile Display Co., Ltd.
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