Method and apparatus for driving liquid crystal dispaly device
AssigneeLG.Philips LCD Co., Ltd.
InventorsHee Hong, Kyung Kwon
Life of this patent
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Abstract
A method and an apparatus for driving a display device including a histogram calculator to calculate a histogram of pixel data for an input image and a data stretching curve generator, which divides the histogram into n (n being a positive integer above 2) gray level areas to generate a data stretching curve for each gray level area of which a gradient is determined in proportion to a total number of pixel data accumulated for each of the gray level areas, and modulates the pixel data of the input image with the generated data stretching curve.
Claims16
An apparatus for driving a display device, comprising:
- a histogram calculator to calculate a histogram of pixel data for an input image;
- and
- a data stretching curve generator, which divides the histogram into n (n being a positive integer above 2) gray level areas to generate a data stretching curve for each gray level area of which a gradient is determined in proportion to a total number of pixel data accumulated for each of the gray level areas, and modulates the pixel data of the input image with the generated data stretching curve.
A liquid crystal display device, comprising:
- a liquid crystal display panel;
- a histogram calculator to-calculate a histogram of pixel data for an input image;
- a data stretching curve generator, which divides the histogram into n (n being a positive integer above 2) gray level areas to generate a data stretching curve for each gray level area of which a gradient is determined in proportion to a total number of pixel data accumulated for each of the gray level areas, and modulates the pixel data of the input image with the generated data stretching curve;
- a data driver to supply the modulated pixel data to the liquid crystal display panel;
- a gate driver to supply a scan pulse to the liquid crystal display panel;
- and
- a timing controller to supply the modulated pixel data to the data driver and control the data driver and the gate driver.
A driving method of a liquid crystal display device, comprising the steps of:
- calculating a histogram of pixel data for an input image;
- dividing the histogram into n (n being a positive integer above 2) gray level areas;
- generating a data stretching curve for each gray level area of which a gradient is determined in proportion to a total number of pixel data accumulated for each of the gray level areas;
- and
- modulating the pixel data of the input image with the data stretching curve.
Dependencies are inferred from the claim text.