Patent ID: 7817156

Claim:
An image supply device for supplying an image to an image display device via a network, comprising: an application program capable of issuing image drawing commands; a drawing module configured to process drawing commands issued by the application program; a hook processing module configured to hook and preempt a specific drawing command issued by the application program and to draw an image in a transfer image storage area within a general purpose memory according to the acquired drawing command; and an image transfer processing module configured to acquire an image from the transfer image storage area and to transfer the acquired image to the image display device via the network, wherein the image transfer processing module is constituted such that the hook processing module is loaded into the application program responsive to activation of the image transfer processing module, and the hook processing module is unloaded from the application program responsive to deactivation of the image transfer processing module, to avoid the drawing command being hooked when a VNC server is not executing.