Video-frequency compression method

A video compression, current frame technology, applied in the field of image processing, can solve the problems of high rate, high complexity, can not meet the user's usage habits, etc., to achieve the effect of stable coding output and satisfying operating habits

Active Publication Date: 2007-06-20
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

[0006] Conventional video and image compression standards of the Moving Picture Experts Group (MPEG) series, H.26x series, and Joint Photographic Experts Group (JPEG) series are all aimed at general-purpose video compression processing, with high complexity and high speed, which cannot meet the practical requirements of KVM. requirements
Moreover, these solutions do not fully consider the display video characteristics of KVM applications, and cannot meet the user's usage habits.

Method used

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Embodiment Construction

[0036] 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.

[0037] The general idea of ​​the present invention is to simplify on the basis of active video processing, and realize dynamic adjustment of response time and flow distribution by controlling the change of quantization coefficient. For example: if the quantization coefficient is set to 1, all the content of the changed picture will be encoded immediately, and the subsequent encoded data of the picture that does not change will be zero except for the frame header. This effect is equivalent to static picture compression, and the data traffic is concentrated on the changing picture ; If the quantization coefficient is set to a maximum value when the screen is switched, and the quantization coefficient is gradually reduced in a series of subsequent screens according to a certain strategy, the...

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Abstract

The method comprises: for first frame of image, using an upper limit quantization factor as the quantization factor of current frame to make intra-frame coding for the current frame; for the images after first frame, deciding if the current frame occurs image switch; if yes, then using the upper limit quantization factor as the quantization factor of current frame to make intra-frame coding for the current frame; otherwise, using the quantization factor of reference frame to make calculation to get the quantization factor of current frame, and according to the quantization factor, making the coding for the current frame. The invention stabilizes the output of codes compressed with KVM, smoothes the burst data size, and improves the response speed of KVM display interface.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a video compression method for keyboard, video and mouse management (KVM). Background technique [0002] At present, keyboard, video, and mouse management (Key Video Mouse, KVM) have been widely used in remote management. KVM is mainly used for remote control of the main input and output interfaces of computers, generally including keyboard, mouse, and display. The amount of information data of the keyboard and the mouse is relatively small, which is relatively easy to implement, but the amount of video data displayed on the output is large, so it is necessary to effectively compress the video data in order to transmit video data under the condition of limited bandwidth. [0003] As we all know, the premise of the application of standard video compression algorithms is continuous, active, and rich dynamic pictures. In these cases, its compression efficiency and adaptabil...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/30H04N19/124H04N19/51H04N19/593
Inventor 马付伟关少宁王卫勤覃景繁唐繁荣李玉龙
Owner TENCENT TECH (SHENZHEN) CO LTD
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