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Image display device and image display system

An image display device and image technology, applied in projection devices, image communications, components of television systems, etc.

Active Publication Date: 2005-02-02
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as mentioned above, when the adjuster adjusts the image while looking at the image displayed on the screen, if adjacent colors are different, even if the same color is displayed, the human eye may perceive it as a different color, so only It is difficult to adjust the color to the desired color when looking at the image

Method used

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  • Image display device and image display system
  • Image display device and image display system
  • Image display device and image display system

Examples

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Embodiment Construction

[0060] FIG. 1 is an explanatory diagram showing a schematic configuration of a projector 100 as a first embodiment of the present invention.

[0061] The projector 100 has: a control unit 10; a liquid crystal panel 90 as a light modulation device; an image processing system 20 for processing an image based on an image signal VS input from the outside; The liquid crystal panel driving part 80 of the panel 90; the light source lamp unit 95 having the light source lamp 92; The image processing system 20 has: an A / D converter 30 for converting an input analog image signal VS into a digital image signal VSI; a frame memory 40 for temporarily storing the image signal VSI output from the A / D converter 30; an OSD section (closed screen display section) 50 superimposed on an image displayed by the image signal VB2 read out from the frame memory 40; a tone correction section 60 for correcting the tone value of the image signal VS3 output from the OSD section 50; A gamma correction unit...

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PUM

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Abstract

The invention provides an image display device, an image display system, and a projector that enable an adjuster to easily verify whether colors that appear to be identical are actually identical or different for image adjustment. An image display device according to the invention includes a superimposing part that superimposes a cursor image on a position specified by an external source and located in an image of an input image signal, a first display that displays an image processed by the superimposing part, a gray-scale acquisition part that acquires the gray scale of the image signal corresponding to the specified position from the image signal, and a gray-scale output part that outputs the gray scale acquired by the gray-scale acquisition part.

Description

technical field [0001] The present invention relates to an image display device, an image display system, and a projector capable of easy image adjustment. Background technique [0002] Conventionally, in an image display device such as a projector, a desired image is obtained by correcting the tone value (gradation) of image data using a lookup table or the like. Therefore, at the stage before the product is shipped, the adjuster operates the data in the above-mentioned look-up table while looking at the image displayed on the screen, and adjusts the image to obtain a desired image. [0003] In addition, as such an image adjustment method, for example, a related method is described in Patent Document 1 below. [0004] [Patent Document 1] [0005] Japanese Patent Laid-Open Publication No. 7-141329 [0006] However, as mentioned above, when the adjuster adjusts the image while looking at the image displayed on the screen, if the adjacent colors are different, even if the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/66G09G5/00G09G5/06G09G5/08
CPCH04N5/202G09G5/06G09G2320/0606G09G2320/0666
Inventor 小山文夫
Owner SEIKO EPSON CORP