Commands and data transferred via a network line NL are input to an ASP terminal portion 20 via a network interface controller 220. A first CPU loads a client application corresponding to the command and generated user interface image data via a graphics controller 210. A video signal conversion circuit 310 receives image data from the graphics controller 210 and transfers the processed image data to an LCD drive circuit 330. LCD drive circuit 330 drives an LCD 332 in response to the received image data to project the desired image data onto a projection screen.