LARGE SCREEN VIDEO DISPLAY DEVICE AND METHOD OF DISPLAYING LARGE SCREEN VIDEO THEREIN

摘要

PROBLEM TO BE SOLVED: To facilitate a video image input when the number of screens increases, and to facilitate fetching and displaying video from a remote place by transmitting compressed video data to all video display processing parts by batch broadcasting, expanding and transforming coordinates of the received compressed video data, and writing them in a frame memory. SOLUTION: A video data compression means 12 of a video display control part 14 compresses video data, and transmits the data by a multicast of a video data compression means 13. And, compression video data expansion means 141-144 expand the compressed video data respectively in video display processing parts 171-174. Next, coordinate transformation means 151-154 operate coordinate transformation processing for transforming the inputted video data into the coordinate systems on own displays. Next, video display means 161-164 display coordinatetransformed video data on own displays 181-184. Thus, the coordinate-transformed video data are written in a frame memory.