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Method and device for compressing and decompressing data information, method and device for compensating drive, and display device

A technology for data information and data compression, applied in the fields of compression, compensation drive, decompression of data information, and display devices, can solve the problems of occupying a large amount of memory, compensation of display devices, and inability to accurately improve the uniformity of brightness of display devices, etc. The effect of reducing space and ensuring accuracy

Active Publication Date: 2018-09-21
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the excessive number of sub-pixel units, the amount of data information is also very large, and storing data information requires a large amount of memory.
In order to reduce the memory occupied by storing data information, it is necessary to compress the data information, but because the fluctuation range of the data information representing the brightness capability of the sub-pixel unit has a certain correlation, and because each sub-pixel unit is an independent individual, so The data information representing the brightness capability of the sub-pixel unit also has certain independence. If lossless compression is used for data information, the memory occupied by storing data information cannot be effectively reduced; if lossy compression is used for data information, data will be damaged. The accuracy of the information leads to the inability to accurately compensate the display device based on the decompressed data information, so that the uniformity of the brightness of the display device cannot be accurately improved

Method used

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  • Method and device for compressing and decompressing data information, method and device for compensating drive, and display device
  • Method and device for compressing and decompressing data information, method and device for compensating drive, and display device
  • Method and device for compressing and decompressing data information, method and device for compensating drive, and display device

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Embodiment 1

[0059] see figure 1 , the method for compressing data information provided by the embodiment of the present invention includes:

[0060] Step 101, obtain the data information corresponding to each sub-pixel unit; wherein, the data information is used to represent the brightness capability of the sub-pixel unit, and according to the data information, an external circuit can be connected to compensate the sub-pixel unit, so that multiple sub-pixel units have a higher brightness. High brightness uniformity.

[0061] Step 102, according to the data information, establish a distribution function model; wherein, the distribution function model can be a distribution function model such as a Gaussian distribution function model, a Poisson distribution function model, or a Cauchy distribution function model, wherein, establishing the distribution function model requires Parameters, such as expected value, variance, standard deviation, covariance and other parameters, can be obtained t...

Embodiment 2

[0072] In the data information, there are also some data information that belong to abnormal data information. For example, if a sub-pixel unit is a normally bright, normally dark or dead pixel, the data information corresponding to the sub-pixel unit belongs to abnormal data information. When performing compensation, the abnormal data information will affect the brightness uniformity of other sub-pixel units around the sub-pixel unit corresponding to the abnormal data information. In order to reduce the impact of abnormal data information on the brightness uniformity of other sub-pixel units, on the basis of the first embodiment, this embodiment will describe how to process the abnormal data information in the specific steps of obtaining the effective value selection interval; in addition , this embodiment will also specifically describe how to establish a distribution function model. see Figure 5 , step 102 in the first embodiment can be specifically refined into step 1021...

Embodiment 3

[0086] see Figure 7 , in order to find the compressed data information (i.e. compressed data information block) quickly and conveniently, on the basis of Embodiment 1, the method for compressing data information of the present invention can also add step 105-step 108 after step 104, step 105-step 108 includes:

[0087] Step 105, according to the boundary values ​​X1 and X2 of the effective value selection interval, and the N, use the formula C(i)=X1+[(2i-1) / 2N]*(X2-X1) to calculate the The quantization value C(i) corresponding to the compression interval; wherein, X1 Figure 8 As shown, the boundary value X1=-0.176, X2=2.016 of the effective value selection interval, and the number of compression intervals N=4, so the quantization value C(1) corresponding to the compression area a=-0.176+(1 / 8)* (2.016+0.176)=0.098, the quantized value C(2)=-0.176+(3 / 8)*(2.016+0.176)=0.646 corresponding to the compressed region b, the quantized value C(3)=- corresponding to the compressed region...

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Abstract

The invention discloses a method and device for compressing and decompressing data information, a method and device for compensating driving, and a display device, and relates to the field of display technology. The problem of accurate compensation. The method for compressing data information includes: obtaining data information corresponding to a sub-pixel unit; establishing a distribution function model according to the data information; obtaining an effective selection interval according to the distribution function model and an effective threshold; dividing the effective selection interval into N In the compression interval, according to the storage length P of the data information corresponding to the sub-pixel unit, the data information corresponding to each compression interval is compressed to M times of the data information corresponding to all sub-pixel units to obtain N compressed data information blocks. The method and device for compressing and decompressing data information and the method and device for compensating driving provided by the present invention are applied to display devices that need to compensate sub-pixel units.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a method and device for compressing and decompressing data information, a compensation driving method and device, and a display device. Background technique [0002] At present, with the increase of user demand, the display device tends to be larger in size and higher in resolution. In order to meet the above trend, the number of sub-pixel units in the display device is increasing. However, due to the large number of sub-pixel units, The display device often has uneven display brightness when displaying pictures. In order to improve the uniformity of display brightness of the display device, it is necessary to obtain the brightness capability of the sub-pixel unit corresponding to the sub-pixel unit one by one. According to the data information, the luminance of the sub-pixel unit is compensated by using an external compensation method according to the data information, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/30
CPCH03M7/30H03M7/3059H03M7/3079G09G3/20G09G2320/0285G09G5/10G09G2320/0233G09G3/2092G09G5/393
Inventor 周杨孟松
Owner BOE TECH GRP CO LTD
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