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Digital KVM (Keyboard, Video and Mouse) switcher oriented screen video compression method

A technology of screen video and compression method, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., and can solve the problems of large amount of peak transmission data and large amount of overall transmission data.

Active Publication Date: 2016-11-09
杭州比特瑞旺电脑有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that the overall transmission data volume of screen video data in the digital KVM system is huge and the peak transmission data volume is too large in complex video scenes, the present invention provides a screen video compression method for digital KVM devices. Compress the screen video data at a high speed, effectively reduce the overall data volume and peak data volume of the screen video code stream, and maintain good reconstructed video quality

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  • Digital KVM (Keyboard, Video and Mouse) switcher oriented screen video compression method
  • Digital KVM (Keyboard, Video and Mouse) switcher oriented screen video compression method

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Embodiment Construction

[0270] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings and examples. It should be pointed out that the following data compression is performed for screen video with a resolution of 1366×768. In the specific writing process of the compressed code stream, this embodiment uses big-endian When writing in storage mode, the high-order bit data of the data to be compressed is first written into the high-order bit of the code stream byte. The described method is only one of the typical application methods of digital KVM switches. Within the scope of the present invention, those skilled in the art can also use some other alternative implementation manners according to requirements.

[0271] A screen video compression method for digital KVM switches, such as figure 1 shown, including the following steps:

[0272] (1) Input a frame of screen video data:

[0273] Described one frame of screen video data is collec...

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Abstract

The invention discloses a digital KVM (Keyboard, Video and Mouse) switcher oriented screen video compression method. The method comprises the steps of (1), inputting a frame of screen video data; (2), writing frame header information of a current video frame in a stream; (3), obtaining an uncoded chrominance component sub-frame from the current video frame; (4), obtaining an uncoded data block from a current chrominance component sub-frame; (5), calculating coding information and reconstruction data of a current block under various candidate coding modes, and selecting a final coding mode; (6), writing the coding information of the current block in the stream; (7), repeating the steps (4) to (6); (8), carrying out byte alignment to the stream written in the current video frame; (9), repeating the steps (3) to (8); and (10), carrying out frame synchronization header escape on the stream generated by the current video frame. According to the method, under the limited calculation complexity, the overall and peak data volume of the video stream of the screen can be effectively reduced; moreover, the high reconstruction video quality is ensured.

Description

technical field [0001] The invention relates to the field of digital video signal processing, in particular to a screen video compression method for digital KVM switches. Background technique [0002] Digital KVM system is a multi-computer switching management system based on IP network, which can realize remote control of multiple computers using a set of keyboard (Keyboard), monitor (Video), and mouse (Mouse), mainly including digital KVM switcher and main control platform . The digital KVM switch digitizes and transmits the output signal of the computer monitor through the network, so that the screen video can be displayed on the client side of the main control platform. In addition, the digital KVM switch also receives the keyboard and mouse information from the main control platform, and converts it into the input signal of the local computer, so as to realize the remote control of the local computer by the main control platform. Due to the low operating frequency of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/154H04N19/103H04N19/176H04N19/186H04N19/124H04N19/59
CPCH04N19/103H04N19/124H04N19/154H04N19/176H04N19/186H04N19/59
Inventor 朱威郑雅羽郑阳徐鑫涛李伟超吴斌
Owner 杭州比特瑞旺电脑有限公司
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