Patent ID: 8881298

Claim:
A client computer for communicating with a server executing an application program to enable a user at the client computer to utilize the application program by communicating with the server based on an instruction of the user, comprising: at least one hardware computer processor and one or more distinct software modules, each of the one or more distinct software modules being embodied on a non-transitory computer-readable recordable storage medium, and wherein the one or more distinct software modules comprise a graphic control module, a DirectDraw control module, and a composition processing module, wherein a graphic control module receives display data from the server and converts the display data to signals transmittable to a display device, and stores the signals in an on-screen buffer of a video RAM; a DirectDraw control module stores, in an off-screen buffer of the video RAM, display data received from the server apparatus; a composition processing module composes the display data stored respectively in the on-screen buffer and in the off-screen buffer, and outputs the composed display data into the display device; and a graphics chip, wherein the server, in response to detecting output processing of a certain type, outputs dummy display data unrelated to the display data to the graphics chip and whereby a screen based on dummy display data is displayed by the graphics chip while display data is displayed by the DirectDraw control module.