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Image processing device, image display device and image processing method

An image processing device and pixel technology, applied in image communication, static indicators, instruments, etc., can solve problems such as display brightness reduction

Inactive Publication Date: 2010-02-10
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these techniques, the black interpolation ratio is increased to increase the effect of improving the response of moving pictures, so there is a problem that display brightness decreases as the black interpolation ratio increases

Method used

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

Examples

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no. 1 example

[0081] figure 1 The overall configuration of an image display (liquid crystal display 1 ) including the image processing apparatus (image processing section 4 ) according to the first embodiment of the present invention is shown. The liquid crystal display 1 includes a liquid crystal display panel 2 , a backlight section 3 , an image processing section 4 , a frame memory 62 , an X driver 51 , a Y driver 52 , a timing control section 61 and a backlight control section 63 . Furthermore, the image processing method according to the embodiment is embodied by the image processing device according to the embodiment, and will also be described below.

[0082]The liquid crystal display panel 2 displays a picture corresponding to a picture signal Din by driving signals supplied from an X driver 51 and a Y driver 52 which will be described below, and includes a plurality of pixels 20 arranged in a matrix. Furthermore, each pixel 20 includes two sub-pixels SP1 and SP2, whereby the view...

no. 2 example

[0113] Next, a second embodiment of the present invention will be described below. Incidentally, similar components are denoted by similar numerals to those of the first embodiment, and will not be further described. Furthermore, the image processing method according to this embodiment is embodied by the image processing apparatus according to this embodiment, and will also be described below.

[0114] Figure 10 The overall configuration of an image display (liquid crystal display 1A) including the image processing apparatus (image processing section 4A) according to this embodiment is shown. Image Display 1A with figure 1 The image display 1 of the first embodiment shown is different in that an image processing section 4A is arranged instead of the image processing section 4 .

[0115] The image processing section 4A includes: a gradation conversion section 46 instead of the two gradation conversion sections 44 and 45 in the image processing section 4; and a sub-pixel driv...

no. 3 example

[0126] Next, a third embodiment of the present invention will be described below.

[0127] Figure 12 The overall configuration of an image display (liquid crystal display 1001) including the image processing apparatus (image processing section 2004) according to the third embodiment of the present invention is shown. The liquid crystal display 1001 includes a liquid crystal display panel 1002 , a backlight section 1003 , an image processing section 1004 , a frame memory 1062 , an X driver 1051 , a Y driver 1052 , a timing control section 1061 and a backlight control section 1063 . Furthermore, the image processing method according to this embodiment is embodied by the image processing apparatus according to the embodiment, and will also be described below.

[0128] The liquid crystal display panel 1002 displays a picture corresponding to, for example, a picture signal Din by driving signals supplied from the X driver 1051 and the Y driver 1052 to be described below, and incl...

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Abstract

An image processing device is provided for making it possible to cope with both the widening of a viewing angle characteristic while reducing a feeling of flickers in an image display device with a sub-pixel structure and the improvement of a dynamic image response characteristic. The image processing device includes a detection means for detecting a motion index and / or an edge index of an input picture for each pixel; a frame division means for dividing a unit frame period of the input picture into a plurality of sub-frame periods; and a gray-scale conversion means for selectively performing adaptive gray-scale conversion on a luminance signal in a pixel region where a motion index or an edge index larger than a predetermined threshold value is detected from the luminance signal of the input picture by the detection means so that, while allowing the time integral value of the luminance signal within the unit frame period to be maintained as it is, a high luminance period having a luminance level higher than that of an original luminance signal and a low luminance period having a luminance level lower than that of the original luminance signal are allocated to sub-frame periods in the unit frame period, respectively, and performs adaptive gray-scale conversion for each sub-pixel so that the plurality of sub-pixels in each pixel have different display luminance from each other.

Description

technical field [0001] The present invention relates to an image processing device and an image processing method suitable for application to a hold type image display or an image display configured such that each pixel includes a plurality of sub-pixels, and an image display including such an image processing device. Background technique [0002] As a method of improving the response of a moving picture by performing a pseudo-impulse display (pseudo-impulse display) by an image display that performs a hold type display, such as a liquid crystal display (LCD), black interpolation techniques such as black frame interpolation or backlight flicker are widely used. in commercial LCDs. However, in these techniques, the black interpolation ratio is increased to increase the effect of improving the moving picture response, and thus there is a problem that display brightness decreases as the black interpolation ratio increases. [0003] Therefore, a pseudo-impulse display method ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20H04N5/66
CPCG09G2300/0443G09G2320/103G09G2360/18G09G2320/0252G09G2320/028G09G3/2092G09G3/3648
Inventor 糸山智彦猿乐寿雄杉泽扩谷野友哉
Owner SONY CORP
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