Image Data Transmission Apparatus and Method for Image Display System

Abstract

An image display system comprises: a transmission device (PC), for transmitting image data upon receiving a drawing command from an OS or an application; and a receiving monitor, for displaying, on a high-resolution panel, image data received via a monitor cable, wherein the transmission device includes a drawing command analysis device, for detecting an area on a screen wherein the content is changed by the drawing command, and for employing the detected area to calculate an area to be transmitted, and a graphics card, for transmitting a packet that includes the calculated area to be transmitted, and control data provided as header data for the area to be transmitted, and wherein the receiving monitor includes a packet reception device, for analyzing the header data in the received packet and for, based on the header data, rendering image data in an internally provided frame memory.

1 . An image display device for displaying image to a panel upon receiving a packet from transmission apparatus comprising: a packet analysis unit, for extracting header data from a received packet; a header analysis unit, for identifying, based on said header data extracted from said packet analysis unit, the location of a frame memory whereat image data is written; and a panel controller, for reading said image data from said frame memory, and for displaying said image data on a panel at a location obtained by the analyzation. 
     
     
         2 . The image display device according to  claim 1 , wherein said header data includes data for a scanning start point in a rectangular area in said frame memory wherein images are drawn. 
     
     
         3 . The image display device according to  claim 1 , wherein said panel is a high-resolution panel such that, when raster image data is to be displayed, the data transfer capacity of a cable along which a packet is transmitted, by said image data transmission apparatus, is exceeded, so that the display quality must be reduced.