Patent ID: 7187372

Claim:
An image display system, comprising: a transmission device, for transmitting image data based on a predetermined drawing command; and a receiving monitor, for displaying received image data on a display panel, wherein said transmission device includes a transmitter frame memory, area detection means, for detecting an area wherein a change occurs on a screen in accordance with said drawing command, transmission target area calculation means, for calculating, based on said area detected by said area detection means, a target area to be transmitted, and packet transmission means, for transmitting a packet that includes said target area that is obtained by said transmission target area calculation means, and control data for said target area, and wherein said receiving monitor includes analysis means, for analyzing said control data received from said packet received from said transmission device, a receiver frame memory, for composing image data based on said control data analyzed by said analysis means, and display means, for displaying, on a display panel, said image data rendered in said receiver frame memory, wherein said packet transmission means adds, to said target area, header data that is composed of said control data, and transmits the resultant data as said packet to said receiving monitor, wherein said image data of said target area to be transmitted is stored in a displayed area in said transmitter frame memory and said header data is stored in an undisplayed area in said transmitter frame memory wherein no image data are stored.