A kind of compression and decompression method, device and codec system of demura table data

A compression method and table data technology, applied in the field of LCD/OLEDdemura and data compression, can solve problems such as low compression rate, and achieve the effects of improving compression rate, occupying less logic gates, and stabilizing compression rate

Active Publication Date: 2021-04-16
WUHAN JINGLI ELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of this, the embodiment of the present invention provides a method, device and codec system for compressing and decompressing Demura table data, so as to solve or at least partially solve the technical problem of low compression ratio existing in the prior art

Method used

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  • A kind of compression and decompression method, device and codec system of demura table data
  • A kind of compression and decompression method, device and codec system of demura table data
  • A kind of compression and decompression method, device and codec system of demura table data

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Embodiment 1

[0063] This embodiment provides a method for compressing Demura table data. For details, see figure 1 , the method includes:

[0064] First, step S101 is performed: collecting LCD images in different states.

[0065] Specifically, the LCD image is the image displayed on the LCD display screen, and the LCD has different resolutions, for example, the LCD has a 4K resolution of 2160*3840.

[0066] Step S102 is then executed: based on the preset Demura table data generation algorithm and the LCD images in different states, first original Demura table data is generated, and the scale of the first original Demura table data may be 3*2160*3840*10bit

[0067] Specifically, the preset Demura table data generation algorithm is a known algorithm, and different manufacturers have corresponding Demura table data generation algorithms, which will not be described in detail here.

[0068] Next, step S103 is performed: the first original Demura table data is compressed by using a down-sampl...

Embodiment 2

[0086] See image 3 , the present embodiment provides a decompression method for Demura table data, the method includes:

[0087] S201: Decode the compressed Demura table code stream data by using a three-channel interleaved jpegls decoding method to obtain decompressed down-sampled Demura table data, wherein the compressed Demura table code stream data passes through the three-channel interleaved jpegls The encoding method compresses the down-sampled Demura table data. The down-sampled Demura table data is generated based on the preset demura table data generation algorithm and LCD images in different states. After generating the first original Demura table data, the down-sampling method Obtained after compressing the first original Demura table data;

[0088] S202: Perform up-sampling processing on the down-sampled Demura table data to obtain up-sampled Demura table data;

[0089] S203: Decode the compressed run-length coded code stream of the mask map of the compensation ...

Embodiment 3

[0094] This embodiment provides a compression device for Demura table data, please refer to image 3 , the compression device includes:

[0095] A collection module 301, configured to collect LCD images in different states;

[0096] Generating module 302, for generating the first original Demura table data based on preset Demura table data generation algorithm and LCD images under different states;

[0097] The first compression module 303 is used to compress the first original Demura table data in a down-sampling manner to obtain down-sampled Demura table data;

[0098] The second compression module 304 compresses the down-sampled Demura table data by using a three-channel interleaved jpegls coding method to obtain compressed Demura table stream data.

[0099] In one embodiment, the compression device also includes a compensation area mask map compression module, which is used for after collecting LCD images in different states:

[0100] According to the LCD image and the ...

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Abstract

The present invention provides a method for compressing and decompressing De-Mura table data, a device, and a codec system, wherein the compression method includes: after collecting LCD images in different states, based on a preset demura table data generation algorithm and in different states LCD image to generate the first original demura table data; then use the down-sampling method to compress the first original demura table data to obtain the down-sampled demura table data; finally use the three-channel interleaved jpegls encoding method to compress the down-sampled demura table The data is compressed to obtain the compressed Demura table code stream data. The invention realizes the technical effect of increasing the compression rate and reducing the cost of the decompression circuit.

Description

technical field [0001] The invention relates to the technical field of LCD / OLED demura and data compression, in particular to a compression and decompression method, device and codec system for Demura table data. Background technique [0002] In order to stabilize the display effect of LCD / OLED displays and eliminate the mura phenomenon, it is necessary to adopt a compensation method, that is, De-Mura. LCD means Liquid Crystal Display (Liquid Crystal Display), OLED means Organic Light-Emitting Diode (Organic Light-Emitting Diode), mura phenomenon refers to the uneven brightness of the display, causing various traces, and De-Mura means mura elimination technology. [0003] In the prior art, the general steps of De-Mura include the following steps: [0004] a.Drive IC lights up the panel (TV / mobile / Tablet) and displays several images (usually grayscale or RGB). [0005] b. Use a high-resolution and high-precision CCD camera to take the above pictures. [0006] c. Analyze th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/42H04N19/13G09G3/36G09G3/3208
Inventor 梅林海郑增强
Owner WUHAN JINGLI ELECTRONICS TECH
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