Remote desktop image transmission method and remote desktop image transmission system

A remote desktop and desktop image technology, applied in the remote desktop field, can solve problems such as poor versatility, and achieve the effects of improving user experience, improving system performance, and reducing the amount of data transmitted

Active Publication Date: 2012-12-12
SANGFOR TECH INC
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This technology needs to rely on the support of the operating system platform. If it is implemented betwe

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  • Remote desktop image transmission method and remote desktop image transmission system
  • Remote desktop image transmission method and remote desktop image transmission system
  • Remote desktop image transmission method and remote desktop image transmission system

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Embodiment Construction

[0065] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The remote desktop described in the embodiment of the present invention is a graphical remote access technology, which enables the user to remotely manipulate the computer at the other end of the network, and the desktop image of the controlled end will be displayed on the user's display device, allowing the user to obtain the operation The same experience as the local device; correspondingly, in a preferred embodiment, the compression end is the computer controlled by the remote network, and the decompression end is the computer displayed on the user end. The meanings of the remote desktop, the compression end and the decompression end will not be described in detail i...

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Abstract

The invention discloses a remote desktop image transmission method and a remote desktop image transmission system. The remote desktop image transmission method comprises the following steps: synchronous image block cache is maintained in the image transmission process by compression end and a decompression end; the current frame of a desktop image is partitioned and hierarchical indexes are constructed by the compression end; changed image blocks and unchanged image blocks of the current frame with respect to the image block cache are detected, the change image blocks after the compression with tags of the unchanged image blocks in the image block cache are packaged into final transmission data; the data are transmitted to the decompression end; the image tags and the compressed image block data are distinguished and the corresponding restoration is carried out after the transmission data are received; and the desktop image is displayed. By means of the image blocks, the hierarchical indexes and a image block cache technology, the invention has the beneficial effects of optimizing the remote desktop image transmission.

Description

technical field [0001] The invention relates to the technical field of remote desktops, in particular to a remote desktop image transmission method and system. Background technique [0002] The remote desktop technology needs to transmit the image of the remote controlled terminal to the control terminal. Because the image data is large and occupies a lot of bandwidth, the optimization of the remote desktop transmission data has become a core technology of the remote desktop. [0003] The optimization techniques for remote desktop image transmission in the prior art mainly include: 1. Do logical XOR operation between the current desktop image and the previous frame, so as to find the pixels that have not changed and the pixels that have changed, and then pass the pixels that have not changed through Lossless compression algorithm for compression. This technology can only compress unchanged images existing in adjacent columns in the same row, and cannot compress the unchange...

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Application Information

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IPC IPC(8): H04N7/26H04N19/176H04N19/30
Inventor 李龙
Owner SANGFOR TECH INC
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