| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection video display system capable of reducing the load of a network without fault, and a projection video display device used for the same. <P>SOLUTION: An information processor periodically captures its display image, detects the difference region between the capture image of the previous time and the capture image of the present time, and transmits the coordinate data and image data of the detected difference region via the network to the projection video display device. When the difference regions are not detected continuously a prescribed number of times, the processor transmits the image data of the entire region of the capture image via the network to the projection video display device. The projection video display device writes the received image data to a drawing area when the capture image data received from the information processor is the entire area data of the drawing area. When the received image data is not the entire area data of the drawing area, the processor writes the received image data into the received coordinate data position of the drawing area. <P>COPYRIGHT: (C)2009,JPO&INPIT |
