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Video data compression method

A compression method and technology for video data, applied in the direction of digital output to display devices, electrical components, transmission systems, etc., can solve the problems of loss of original image details, high logic implementation cost, poor real-time image performance, etc., to achieve simple recovery and saving. Hardware cost and efficiency gains

Active Publication Date: 2007-10-03
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

However, this compression algorithm is complex and the cost of logic implementation is high
And the JPEG algorithm is lossy compression, which will lose the details of the original image
In addition, due to the complexity of the JPEG compression algorithm, the compression time is relatively long, and the real-time performance of the image is relatively poor.

Method used

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Embodiment Construction

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0019] In order to facilitate the understanding of the present invention, the server management function and computer image display characteristics are firstly analyzed. In KVM applications, most of the images are simple windows and menu interfaces, so the color of the image is relatively simple, and there are few changes in the image, even if there are changes, it is relatively simple, such as window switching, mouse movement, etc. The present invention proposes a simple image compression method aimed at the characteristics of video images in KVM applications.

[0020] The structure of a common KVM image processing system is shown in Figure 2, including a digital video interface (DVI), image processing logic implemented by a field programmable gate array (FPGA), an image transmission co...

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Abstract

The present invention discloses a video data compression method for KVM application. Said method includes the following steps: for first frame image coding said image data, obtaining image coded data, then using aid image data and data whose data length is smaller in the image coded data as result output; for the image after first frame comparing current frame image data with last frame image data to obtain difference data of both them, and respectively coding current frame image data and difference data to obtain current frame image coded data and coded difference data, then outputting current frame image data, current frame image coded data, difference data and the data whose data length is smallest in coded difference data.

Description

technical field [0001] The invention relates to the technical field of image compression, in particular to a video data compression method for keyboard, video and mouse (KVM). Background technique [0002] As we all know, keyboard, video and mouse (Keyboard Video Mouse, KVM) is a technology for remote management of servers. In KVM technology, the input / output devices (keyboard, video and mouse) of the server are placed at the remote end. During use, the keyboard, video and mouse information is processed to a certain extent, and then transmitted to one or more servers through the network, so as to realize complete control and management of these servers from the remote end. [0003] Figure 1 is a practical mode of KVM. The remote console (Management Station) in the figure is connected to the server main board (Server Main Board) through a LAN hub (LAN Hub). On the server side, the universal serial bus interface (USB I / F) transmits keyboard and mouse data to the KVM module, ...

Claims

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Application Information

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IPC IPC(8): G06F3/14H04L29/06
Inventor 谢建斌
Owner TENCENT TECH (SHENZHEN) CO LTD
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