Method and system for acquiring screen image in screen sharing system based on Internet

Abstract

The invention discloses a system for acquiring a screen image in a screen sharing system based on the Internet. The system comprises a screen sharing server and one or more screen acquisition terminals connected with the screen sharing server in a communication manner, wherein the screen acquisition terminal comprises a screen acquisition module for acquiring the screen image and encoding the acquired screen image into a data stream according to a lossless data encoding method; and the screen sharing server comprises a decoder for decoding and reducing the data stream acquired and encoded by the screen acquisition terminal into the original image, a video encoder for encoding the decoded original image into video data according to a loss video encoding method, a cache area for storing the video data, and a transmitter for transmitting the video data to an external Internet for sharing. In the system, the screen acquisition module is separated from a video encoding and transmitting module, so that the cost is extremely low, and different screen acquisition terminals and acquisition parameters can be switched.

Description

technical field [0001] The invention relates to the technical field of screen sharing based on the Internet, in particular to a method and system for collecting screen images in the screen sharing system based on the Internet. Background technique [0002] Screen sharing is to collect and encode the content displayed on the computer screen, and transmit it over a long distance through the network, so that a large number of users can watch it online at the same time in real time. Screen sharing is widely used in multimedia communication fields such as remote teaching and training, information sharing, real-time data monitoring, and collaborative office. [0003] The original image of the computer screen, due to the relatively large amount of data, generally cannot be directly transmitted on the network. It needs to be encoded and compressed to reduce the amount of transmitted data before transmission. Generally, the screen image is encoded in two ways, one is encoding of a v...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that in view of the defects in the prior art that the cost of hardware sharing is too high and the shared area cannot be set and the screen size of the acquisition can be dynamically adjusted, and the software sharing method cannot be dynamically switched to other computer screens, it provides Method and system for capturing screen images in an Internet-based screen sharing system with low cost and flexible operation

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