Client screen updating display method based on remote desktop protocol

Abstract

The invention relates to a client screen updating display method based on a remote desktop protocol. The method comprises the following steps: (1) monitoring a picture change of a server screen and carrying out step (2); (2) mapping the change of the server screen to an application window; judging whether cache updating is influenced or not; if so, carrying out step (3); otherwise, carrying out step (4); (3) judging whether the size of an updating region of the application window exceeds a pre-set value or not; if so, carrying out differentiation updating of server caching and client caching and displaying on a client; otherwise, carrying out combination updating and displaying on a client; and (4) extracting a caching index corresponding to the application window stored in a server caching list to the client and extracting an image corresponding to the caching index from a client caching list by the client and displaying. Compared with the prior art, a lot of redundant data in a data transmission process can be removed, the data transmission amount is greatly reduced, the network bandwidth is saved and a network responding speed is improved.

Description

Technical field [0001] The invention relates to a client screen update display method, in particular to a client screen update display method based on a remote desktop protocol. Background technique [0002] The remote desktop protocol is to transmit the screen update of the remote desktop to the user client for display. During the remote desktop running process, there will be many screen updates that are the same. For example, if a window is minimized and then restored, and a window is switched from the background to the foreground, these operations will cause the screen of these windows to be redrawn, but The content of the screen is actually the same, or only a small part of it has changed, and there is a lot of redundant data. If the window screen must be redrawn after each operation, a large amount of redundant image information data will be transmitted, which will occupy bandwidth and reduce the network response speed. [0003] The disadvantage of the solution adopted in th...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the solution adopted in the prior art is: only cache the entire screen update picture, and not cache when there is a small amount of picture update, thus causing cache failure; in addition, the update of the user's desktop screen picture is not linked to the specific application, so When the storage space of the cache is full, the accuracy of replacing the cached picture is relatively low, and the picture redrawing speed is slow, which makes the user feel that the screen picture is delayed

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