SYSTEM FOR VIRTUAL DESKTOP SCREEN TRANSMISSION SUPPORTING ZERO CLIENT

摘要

PURPOSE: A virtual desktop screen transmission system is provided to remarkably reduce load of a network in transmission of a virtual desktop screen required for implementing a zero client. CONSTITUTION: A virtual desktop screen transmission system supporting a zero client includes a cloud computing server(100) and a cloud computing zero client(200). The cloud computing server consists of a first frame/block buffer(110), a comparator(120) and an encoder(130). The first frame/block buffer stores a frame or a block having virtual desktop screen data. The comparator determines whether there is variation or not by comparing variation of the frame or block stored in the first frame/block buffer. If there is no variation in the frame or the block, the comparator transmits a control signal maintaining a virtual desktop screen currently displayed to the cloud computer zero client. If there is variation in the frame or the block, the comparator transmits the corresponding frame or block to the cloud computing zero client. The cloud computing zero client includes a decoding unit(210), a second frame/block buffer(220) and a display controller(230). The second frame/block buffer stores a frame or block decoded in the decoding unit. [Reference numerals] (100) Cloud computing server; (110,220) Frame/block buffer; (120) Comparator; (130) Encoding; (200) Cloud computing zero client; (210) Decoding; (230) Display controller; (AA) Display device