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Driving device of image display device, program and storage medium thereof, image display device, and television receiver

A technology of image display equipment and driving device, which can be used in TV, color TV, identification device, etc., and can solve problems such as slow response speed

Inactive Publication Date: 2004-11-03
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, even if the response speed of the liquid crystal is very slow, it is still possible to improve the response speed of the liquid crystal display

Method used

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  • Driving device of image display device, program and storage medium thereof, image display device, and television receiver
  • Driving device of image display device, program and storage medium thereof, image display device, and television receiver
  • Driving device of image display device, program and storage medium thereof, image display device, and television receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The following description will explain an embodiment of the present invention with reference to FIGS. 1 to 9 . More precisely, according to the present embodiment, the image display device 1 can increase the response speed of the pixels, so that the display quality of the image displayed by the pixels will not be significantly deteriorated, and the circuit size and calculation amount can be reduced. For example, the image display device 1 of the present embodiment can be better used as an image display device of a television receiver. Note: Examples of television broadcasts received by television receivers include: (i) terrestrial microwave television broadcasts; (ii) satellite broadcasts such as BS (Broadcast Television Satellite) digital broadcasts and CS (Communication Satellite) digital broadcasts; (iii) cable TV broadcasts .

[0063] For example, on the panel 11 of the image display device 1 , sub-pixels capable of displaying red, green, and blue colors constitute...

Embodiment 2

[0128] As shown in FIG. 10, the modulation-excitation circuit processing section 21a corresponding to the present embodiment includes a FRC (frame refresh rate control) circuit (least significant bit control means) 38, which is installed between the following two: ( i) interception circuit 36; (ii) picture memory 31 and modulation processing section 33.

[0129] According to the video data D(i, j, k), the FRC circuit 38 changes the least significant bit of the video data output by the intercept circuit 36 ​​on the basis of a predetermined pattern, and then outputs the signal with the least significant bit changed as the video data D1(i,j,k). A predetermined pattern is set such that the value of the bits truncated by the truncation circuit 36 ​​corresponds to the average value of the numerical values ​​constituting the pattern. Illustrate, when the truncated value (2 bits) is "01", the relevant value of the least significant bit of the video data output by the truncation circu...

Embodiment 3

[0136] Incidentally, it is explained in Embodiments 1 and 2 that the noise adding circuit 34 is added to the video data D(i, j, * ) is fixed in time series, and for sub-pixel SPIX(i, j), always add the same value of noise to the video data D(i, j, * )superior. On the other hand, this embodiment will explain that the noise added circuit 34 is added to the video data D(i, j, * ) The noise on ) changes in a time-series manner. Note: This structure can also be applied to Examples 1 and 2. A case where the structure described with respect to FIG. 1 is applied to Embodiment 1 will be described below.

[0137] More specifically, in the modulation-excitation processing section 21b of this embodiment, in order to generate a noise that changes in a time-series manner, the noise generating circuit 35b is used instead of the noise generating circuit 35. In the noise adding circuit 35b of the present embodiment, a control circuit 53b is used instead of the control circuit 53, which cha...

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Abstract

A noise adding circuit adds noise data to video data, and a circuit rounds a less significant bit, so as to output video data of 6 bits from 8 bit input data for example. The video data of 6 bits is stored in a frame memory until a further next frame, and a previous frame grayscale correction circuit corrects video data of a previous frame as required so that the video data of the previous frame approaches video data of a further previous frame. It then outputs thus corrected video data. Further, a modulation processing section corrects video data of a current frame so as to emphasize grayscale transition from the video data of the previous frame which is outputted by the previous frame grayscale correction circuit. Thus, it is possible to realize a driving device of an image display device, which can improve a response speed of pixels and has a simple arrangement, without apparently deteriorating display quality of an image displayed in the pixels.

Description

field of invention [0001] In general, the present invention relates to a driver of an image display device, a program and / or its storage medium, an image display device, and / or a television receiver. Background of the invention [0002] Low-power liquid crystal display devices are widely used in mobile devices and fixed devices. As such a liquid crystal display device, there is a liquid crystal display device, wherein: the liquid crystal display device can transmit the grayscale digital signal of the corresponding pixel to the data signal driving circuit; according to the value of the digital signal, the data signal driving circuit converts it to It is converted into a voltage signal, and then converted into a data scan line, thereby controlling the gray level of the pixel. [0003] In a liquid crystal display device, the voltage data corresponding to each pixel on the display panel is transmitted as a digital signal. Therefore, when enlarging the bit width of the grayscal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/36G09G5/02
CPCG09G5/02G09G3/3648G09G2340/16G09G2320/0252G09G2320/041G09G3/2011G09G2340/0428G09G3/2051G09G3/2048G09G2320/0276B22D21/00B22D27/04B22D29/04
Inventor 盐见诚古川智朗宫地弘一富泽一成
Owner SHARP KK
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