Electronic price scale with contrast adjustment function, drive control system for liquid crystal display device and drive control method thereof
First Claim
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1. An electronic price scale comprising:
- a display comprising a TFT type LCD as a display surface;
an input section for adjusting a contrast of the LCD; and
a contrast adjustment unit configured to adjust the contrast of the LCD by changing a luminance gradation for each color of colors displayable on the display;
wherein the contrast adjustment unit comprises;
a color pallet configured to store luminance gradation data of three primary colors of the colors displayable on the display;
a display data forming section configured to read luminance gradation data corresponding to colors to be displayed on the display from the color pallet so as to form display data;
a contrast correction value forming section configured to form a contrast correction value in accordance with input data input from the input section;
a contrast correction display data forming section which corrects the display data Output from the display data forming section with the contrast correction value output from the contrast correction value forming section so as to form corrected display data; and
a display drive section configured to drive the display based on the corrected display data output from the contrast correction display data forming section.
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Abstract
An electronic price scale having a TFT type of LCD as a display comprises a contrast adjustment function which adjusts a contrast of the LCD.
6 Citations
6 Claims
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1. An electronic price scale comprising:
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a display comprising a TFT type LCD as a display surface; an input section for adjusting a contrast of the LCD; and a contrast adjustment unit configured to adjust the contrast of the LCD by changing a luminance gradation for each color of colors displayable on the display; wherein the contrast adjustment unit comprises; a color pallet configured to store luminance gradation data of three primary colors of the colors displayable on the display; a display data forming section configured to read luminance gradation data corresponding to colors to be displayed on the display from the color pallet so as to form display data; a contrast correction value forming section configured to form a contrast correction value in accordance with input data input from the input section; a contrast correction display data forming section which corrects the display data Output from the display data forming section with the contrast correction value output from the contrast correction value forming section so as to form corrected display data; and a display drive section configured to drive the display based on the corrected display data output from the contrast correction display data forming section.
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2. A drive control system for a liquid crystal display device comprising
a liquid crystal display device; -
an input section for adjusting a contrast of the liquid crystal display device; and a display control unit configured to chance a luminance gradation of each color of colors displayable on the liquid crystal display device in accordance with input data from the input section so as to adjust the contrast of the liquid crystal display device; wherein the display control unit comprises; a color pallet configured to store luminance gradation data of three primary colors of the colors displayable on the liquid crystal display device; a display data forming section configured to read luminance gradation data corresponding to colors to be displayed on the liquid crystal display device from the color pallet so as to form display data; a contrast correction value forming section configured to form a contrast correction value in accordance with the input data input from the input section; a contrast correction display data forming section which corrects the display data output from the display data forming section with the contrast correction value output from the contrast correction value forming section so as to form corrected display data; and a display drive section configured to drive the liquid crystal display device based on the corrected display data output from the contrast correction display data forming section. - View Dependent Claims (3)
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4. A drive control system for a liquid crystal display, comprising
a liquid crystal display device; -
an input section for adjusting a contrast of the liquid crystal display device; and a display control unit configured to chancre a luminance gradation of each color of colors displayable on the liquid crystal display device in accordance with input data from the input section so as to adjust the contrast of the liquid crystal display device; wherein the display control unit comprises; a color pallet configured to store luminance gradation data of three primary colors of the colors displayable on the liquid crystal display device; a contrast correction value forming section configured to form a contrast correction value in accordance with the input data input from the input section; a correction color pallet forming section which corrects the luminance gradation data stored in the color pallet with the contrast correction value output from the contrast correction value forming section so as to form a corrected color pallet; a contrast correction display data forming section configured to read luminance gradation data corresponding to colors to be displayed on the liquid crystal display device from the correction color pallet so as to form display data; and a display drive section configured to drive the liquid crystal display device based on the display data output from the contrast correction display data forming section. - View Dependent Claims (5, 6)
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Specification