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Image display device and image processing method

An image display device and image technology, applied in image communication, static indicators, cathode ray tube indicators, etc., can solve the problems of insufficient adjustment, insufficient adjustment, etc.

Inactive Publication Date: 2004-01-21
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the AD conversion characteristics of the AD converter and the display characteristics of the display device, which are the operating characteristics of the image display device, often change over time, so adjustments only at the time of assembly may not be sufficient.
In addition, the operating characteristics of the image display device also change with seasons and usage environments, so adjustment is also insufficient due to the influence of these changes.

Method used

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  • Image display device and image processing method
  • Image display device and image processing method
  • Image display device and image processing method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] A1. The overall structure of the image display device:

[0027] A2. Adjustment of working characteristics:

Embodiment 2

[0029] A. Example 1:

[0030] A1. The structure of the image display device:

[0031] figure 1 It is a block diagram showing the schematic configuration of the image display device according to the first embodiment of the present invention. The image display apparatus 1000 includes a selector 10, an AD conversion unit 20 (ADC), a video processor 30, a controller 40, an EEPROM 50, and a DA converter 60 (DAC) as an image processing unit. In addition, the image display device 1000 includes a display driver 70 and a display device 80 as an image display unit. As the display driver 70, a driver corresponding to the display device 80 is used. In this example, a liquid crystal panel is used as the display device 80 , and a driver for driving the liquid crystal panel is used as the display driver 70 .

[0032] As the above-mentioned display device 80, a liquid crystal panel, a DMD, etc. may be used, and at the same time, an illumination device for illuminating the display device a...

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Abstract

In an image display apparatus of the present invention, at a predetermined timing, a characteristic data setting module actuates a reference image signal generation module to generate an analog reference image signal, based on reference image data prepared in advance. The characteristic data setting module then controls a signal selector module to select the analog reference image signal. An A-D converter module converts the analog reference image signal selected by the signal selector module into a digital image signal according to preset characteristic data. The characteristic data setting module adjusts the characteristic data set in the A-D converter module to make image data expressed by the digital image signal input from the A-D converter module into an image conversion processing module approach to the reference image data. This arrangement ensures easy adjustment of the operating characteristics of the image display apparatus.

Description

technical field [0001] The present invention relates to a technique for automatically adjusting the operating characteristics of an image display device. Background technique [0002] In projectors, as an image display device, for example, a liquid crystal panel, a DMD (Digital Micromirror Device: a trademark of TI Corporation), and the like are widely used. In addition, as a direct-view type image display device, a liquid crystal panel, a PDP (plasma display panel), or the like has been widely used. [0003] In an image processing apparatus constituting an image display apparatus having such a display apparatus, generally, an input analog image signal is digitized, and various kinds of image processing are performed on the digitized image signal. Then, an image corresponding to the image signal output from the image processing device is displayed on the display device used. As described above, the image processing apparatus includes various electronic circuits including A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20G09G5/00G09G5/04H04N5/00H04N5/14H04N17/04
CPCG09G5/04G09G2320/0626G09G2320/0693
Inventor 竹内启佐敏
Owner SEIKO EPSON CORP