| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a server device of a computer system capable of reducing a processing load at a server side following the transfer of drawing data between the server and clients further without deteriorating drawing quality, and to provide a server control program, and a client device of the server control program. <P>SOLUTION: By hardware processing by an accelerator circuit for a drawing region Q' of a change in an image in current drawing data G', not only transmission color data S are written into an unchanged image pixel in one tile unit for generating differential compression drawing data h (H) compressed optimally as data for transfer speedily, but also a transmission detection tile "0" (So) in which all image pixels in one tile have been rewritten to transmission color data S is not transferred to the client device, and only a drawing detection tile "1" is transferred where there is a change in the image. Only a changed tile division portion is extracted from the drawing data G and is compressed optimally, thus minimizing the amount of data transfer while maintaining image quality. <P>COPYRIGHT: (C)2007,JPO&INPIT |
