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System and method of processing chromatic difference signal 4:2:0 plane image data format storage

一种数据存储、存储器的技术，应用在图像处理领域

Inactive Publication Date: 2006-08-02
VIA TECH INC
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AI Technical Summary

Problems solved by technology

Color display systems that use knowledge of how humans work with their senses have existed for a long time, however, the methods of displaying color used in current electronic systems are still under continuous development

Method used

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  • System and method of processing chromatic difference signal 4:2:0 plane image data format storage
  • System and method of processing chromatic difference signal 4:2:0 plane image data format storage
  • System and method of processing chromatic difference signal 4:2:0 plane image data format storage

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Embodiment Construction

[0034] The present invention is applied in the YCbCr color space and the color space format. In order to fully understand the content of the present invention, it is most important to understand the concept of RGB and YUV color space and other various YCbCr color formats.

[0035] The RGB color space is widely used in computer graphics display, wherein red, green and blue are three main additive colors. In the RGB color space, colors are displayed in a three-dimensional Cartesian coordinate system. The RGB color space is one of the earliest color spaces used, and it is also the most commonly used color space in the electronics industry. For example, most display media, such as CRT monitors or flat screens, use the RGB color space . However, the main disadvantage of the RGB color space is that it is necessary to switch between different colors from time to time, especially when changing the light intensity of a special image pixel, the light intensity of each color source, R, G...

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Abstract

In the present invention, colour difference signal (YCbCr) plane image data in 4:2:0 format can be picked up from paging storage and page containing Y data in the paging storage can be properly access-processed. Y data corresponding to M image element can be picked up and stored in displacement buffer storage, of which M value is bigger than or qual to 2. By utilizing abovesteps, Cb and Cr data can be access, picked up and stored so Y, Cb and Cr data stored in the displacement buffer storage can be treated to be plane vedio data set and Y, Cb and Cr data picked up from buffer storage is an image element data which is continuous and is used to put on video display unit.

Description

technical field [0001] The present invention relates to an image processing, in particular to improving the access mode of frame buffer including 4:2:0 format. Background technique [0002] The human eye has three different photoreceptor cells, also known as cone cells (cones), and each cone cell responds differently to light of different wavelengths. Therefore, light with different wavelengths can be perceived as different Color rays. Color display systems that utilize the knowledge of how humans work with their senses have existed for a long time, however, methods of displaying color used in current electronic systems are still under continuous development. [0003] The basic color display system uses the RGB color system, where R represents the red source, G represents the green source, and B represents the blue source. By selecting the wavelength content of the RGB color system, the color gamut (colorgamut) can also be obtained. That is, a wide range of colors can be o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14G09G5/02G09G5/395
CPCG09G5/395G09G5/022
Inventor 谷锦明哈里什·艾尔帕拉维斯维纳森·克里斯那莫思
Owner VIA TECH INC
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