Supercharge Your Innovation With Domain-Expert AI Agents!

De-Mura table data compression and decompression method and device and encoding and decoding system

A compression method and table data technology, applied in the field of LCD/OLED demura and data compression, can solve the problem of low compression rate, achieve the effect of improving compression rate, reducing RAM space requirements, and ensuring accuracy

Active Publication Date: 2019-06-14
WUHAN JINGLI ELECTRONICS TECH +1
View PDF4 Cites 8 Cited by
  • 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 De-Mura table data, so as to solve or at least partially solve the technical problem of low compression rate existing in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • De-Mura table data compression and decompression method and device and encoding and decoding system
  • De-Mura table data compression and decompression method and device and encoding and decoding system
  • De-Mura table data compression and decompression method and device and encoding and decoding system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a method for compressing De-Mura table data, please refer to figure 1 , The method includes:

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

[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] Then perform step S102: Generate the first original demura table data based on the preset demura table data generation algorithm and the LCD images in different states, the scale of the first original demura table data can 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 detailed here.

[0068] Next, step S103 is performed: the first original demura table data is compressed in a down-sampling manner to obtain down-sampled d...

Embodiment 2

[0086] See image 3 This embodiment provides a method for decompressing De-Mura table data, which includes:

[0087] S201: Use the three-channel interleaving jpegls decoding method to decode the compressed Demura table code stream data to obtain the decompressed down-sampled demura table data, where the compressed Demura table code stream data adopts three-channel interleaved jpegls The encoding method is obtained by compressing 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, through 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: Use a run-length decoding method to decode the compressed compensation area mask image and ru...

Embodiment 3

[0094] This embodiment provides a device for compressing De-Mura table data, please refer to image 3 , The compression device includes:

[0095] The acquisition module 301 is used to acquire LCD images in different states;

[0096] The generating module 302 is configured to generate first original demura table data based on a preset demura table data generation algorithm and LCD images in different states;

[0097] The first compression module 303 is configured 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 uses a three-channel interleaving jpegls encoding method to compress the down-sampled demura table data to obtain compressed Demura table code stream data.

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

[0100] According to the LCD image ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides de-Mura table data compression and decompression methods and device and an encoding and decoding system. The compression method comprises the steps: collecting LCD images in different states, and generating first original demura table data based on a preset demura table data generation algorithm and the LCD images in different states; compressing the first original decura table data in a downsampling mode to obtain downsampled decura table data; and finally, compressing the downsampled demura table data by adopting a three-channel interleaved jpegs coding method to obtain compressed Demura table code stream data. The technical effects of improving the compression ratio and reducing the cost of the decompression circuit are achieved.

Description

Technical field [0001] The invention relates to the technical field of LCD / OLED demura and data compression, and in particular to a method, device and coding and decoding system for compressing and decompressing De-Mura table data. Background technique [0002] In order to stabilize the display effect of the LCD / OLED display and eliminate the mura phenomenon, it is necessary to adopt a compensation method, namely De-Mura. LCD stands for Liquid Crystal Display, OLED stands for Organic Light-Emitting Diode, mura phenomenon refers to the phenomenon of uneven display brightness, which causes various traces, and De-Mura stands for 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 pictures (usually grayscale or RGB). [0005] b. Use a high-resolution and high-precision CCD camera to take the above picture. [0006] c. Analyze the pixel color distri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N19/42H04N19/13G09G3/36G09G3/3208
Inventor 梅林海郑增强
Owner WUHAN JINGLI ELECTRONICS TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com