| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a client device and a server device for displaying drawing data generated and transferred by a server device so as to be displayed by a client device with excellent responsiveness. <P>SOLUTION: The height Hv of a virtual screen area 10B is set so as to be higher than the height Hd of a screen display area 26A, and an upward scroll time boundary 20u and a downward scroll time boundary 20d are set from the both upper and lower ends of the virtual screen area 10B to the front part of set width, and in the upward scroll operation, the scroll request of the virtual screen area 10B is transmitted to a server device 10 only when the upper end of a screen display area 26A reaches the upper scroll time boundary 20u, and in the downward scroll operation, the scroll request of the virtual screen area 10B is transmitted only when the lower end of the screen display area 26A reaches a downward scroll time boundary 20D. The scroll width Ss of the virtual screen area 10B accompanied by one scroll request to the server device 10 is set to N times or more (Ss≥N×Sd) with respect to the moving width Sd of the screen display area 26A per one scroll operation. <P>COPYRIGHT: (C)2009,JPO&INPIT |
