Method and apparatus for driving liquid crystal display deriving modulated data using approximation
AssigneeLG Display Co., Ltd.
InventorYong Sung Ham
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Abstract
The present invention discloses a method and apparatus of driving a liquid crystal display device improving a picture quality. In the method and apparatus, modulated data bands including at least two modulated data centering a gray scale being approximate to a gray scale value of source data are derived. An approximation is carried out in two directions perpendicular to each other within the modulated data bands to derive unregistered modulated data positioned between the modulated data, thereby modulating the source data.
Claims15
A method of driving a liquid crystal display, comprising:
- registering a plurality of modulated data in look-up table;
- a modulated data band including a predetermined number of modulated data from the plurality of modulated data, each gray level value of the predetermined number of modulated data being adjacent to a gray level value of source data in horizontal and vertical directions within the look-up table;
- carrying out first and second approximations based on the modulated data band to derive an approximate modulated data not registered in the look-up table, thereby modulating the source data using the approximate modulated data.
A driving apparatus for driving a liquid crystal display, comprising:
- a look-up table having a plurality of registered modulated data and to derive a modulated data band including a predetermined number of modulated data from the plurality of modulated data, each gray level value of the predetermined number of modulated data being adjacent to a gray level value of source data in horizontal and vertical directions within the look-up table;
- and
- a modulator to approximate in the horizontal and vertical directions within the modulated data band to derive an approximate modulated data not registered in the look-up table, to thereby modulate the source data using the approximate modulated data.
A liquid crystal display, comprising:
- a liquid crystal display panel to display images;
- a look-up table having a plurality of registered modulated data and to derive a modulated data band including a predetermined number of modulated data from the plurality of modulated data, each gray level value of the predetermined number of modulated data being adjacent to a gray level value of source data in horizontal and vertical directions within the look-up table;
- and
- a modulator to approximate in the horizontal and vertical directions within the modulated data band to derive an approximate modulated data not registered in the look-up table, to thereby modulate the source data using the approximated modulated data.
Dependencies are inferred from the claim text.