Method for treating color plasma display screen grey

A technology of plasma display screen and processing method, which is applied in the field of grayscale processing of ion display screen, can solve the problems of not very good actual effect, etc., and achieve the effects of clearly highlighting details, ensuring quality, and reducing errors

Inactive Publication Date: 2006-03-22
四川世纪双虹显示器件份有限公司
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Problems solved by technology

Although these methods solve some problems to some extent, the actual effect is not very good.

Method used

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  • Method for treating color plasma display screen grey
  • Method for treating color plasma display screen grey
  • Method for treating color plasma display screen grey

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] see figure 1 (a), the solid line is the brightness response characteristic of the CRT display device to the input interface signal, the curve characteristic is approximately a gamma curve, and the characteristic relationship is a nonlinear relationship; figure 1 (b) is the brightness response characteristic of the interface signal of the plasma display, and its curve coincides with the straight line, forming a linear relationship. Usually, the traditional launch signal corresponds to the nonlinear curve characteristics of CRT displays. The TV station loads the pre-correction signal during the launch process, but the PDP display device with good linearity does not need the pre-correction signal, so it needs to be reversed. Gamma correction.

[0029] see figure 2 , 24-bit binary signal in the figure, 8 bits for each of red, green and blue colors, thr...

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Abstract

The grey treating method for color plasma display screen includes dividing grey level into lower, middle and high grey levels; detecting image information with FPGA in statistic digital image algorithm and grey detecting module, judging the grey characteristic of the current image information with the image processing device, real-time regulating image through expanding one weighting 0.5 sub-field to form 9-bit binary number and to raise the grey output levels in lower grey range of 0-50 to 10, and correcting error generated during processing with the error corrector. The present invention adopts dynamic grey correcting method, can regulate the grey display correction curve automatically based on the real-time image grey and brightness so as to raise grey level, and has lest list checking error and raised image quality.

Description

technical field [0001] The invention relates to a processing method for the gray scale of a color plasma display screen. Background technique [0002] The color plasma display uses gas discharge to realize image display, and has great competitiveness in the field of large-screen flat panel display. The color plasma display adopts the multi-subfield technology to realize the multi-gray level display of the image, which is realized by dividing a frame of image into multiple subfields. Different subfields correspond to different weights, and different weights correspond to different numbers of sustain pulses. , the display time of each subfield is different, and the multi-level grayscale display of the image can be realized through the combination of subfields with different weights. [0003] Since the CRT display device has a nonlinear response to the brightness characteristic, gamma correction is added to all video and image signals, so that the grayscale display of the imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/20G09G5/10H01J17/49G09F9/313
Inventor 刘洋王付生郭应锋
Owner 四川世纪双虹显示器件份有限公司
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