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VNC-based multi-screen interaction method and device

A multi-screen interaction and screen technology, applied in the direction of program control devices, digital output to display devices, etc., can solve problems such as jams and pauses

Inactive Publication Date: 2014-03-26
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, H264, JPEG or MJPEG will consume a lot of CPU resources when encoding and decoding, and the consumption of resources is proportional to the number of pixels, so there will be very obvious phenomena such as jamming and pause.

Method used

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  • VNC-based multi-screen interaction method and device

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Embodiment Construction

[0020] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0021] see figure 1 , is a schematic flowchart of the VNC-based multi-screen interaction method of the present invention.

[0022] The multi-screen interactive method based on VNC of the present invention comprises the following steps:

[0023] S101 detects the screen change rate of the VNC Server desktop;

[0024] S102 If the detected screen change rate is greater than or equal to a first preset value, then detect the window change rate of each window in the VNC Server desktop one by one;

[0025] S103 If there is a window whose window change rate is greater than or equal to a second preset value, encode the window with H264, JPEG or MJPEG; wherein the second preset value is greater than the...

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PUM

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Abstract

The invention discloses a VNC-based multi-screen interaction method and device. The method includes: detecting screen change rate of a VNC server desktop; if the screen change rate detected is larger than or equal to a first preset value, detecting window change rates of windows in the VNC server desktop one by one; if the window change rates of the windows are larger than or equal to a second preset value; encoding the windows by H264, JPEG or MJPEG; transmitting the windows encoded to a VNC viewer desktop. The second preset value is larger than the first preset value. The invention further discloses the VNC-based multi-screen interaction device. Through the application of the VNC-based multi-screen interaction method and device, the problem that the VNC server desktop changes fast, for example, images obviously jam or slow down when video or animation is played, is solved effectively.

Description

technical field [0001] The invention relates to the technical field of multi-screen interaction, in particular to a VNC-based multi-screen interaction method and a VNC-based multi-screen interaction device. Background technique [0002] VNC (Virtual Network Computing, virtual network computer) is widely used in cross-platform remote desktop sharing and control. It uses the RFB (Remote Frame Buffer, remote frame buffer) protocol. The encoding methods in the RFB protocol mainly include Raw, Copy Rectangle, RRE , Hextile and ZRLE etc. The coding methods adopted by the above-mentioned VNC are characterized by fast coding and decoding speed, but low compression rate. These coding methods can meet the requirements of some common applications of users, such as viewing files and browsing web pages. However, in application scenarios that require high-speed screen changes, such as watching videos, the refresh rate of the screen can reach about 25 frames per second, which requires hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44G06F3/14
Inventor 朱燕明
Owner GUANGDONG VTRON TECH CO LTD
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