A picture display device displays a video signal supplied from a data process device. Bi-directional communication is carried out with each of a plurality of data process devices. A plurality of video signals is combined into one screen corresponding to information of the picture size of each of the...http://www.google.com.tw/patents/US7868881?utm_source=gb-gplus-share專利 US7868881 - Picture display device and picture display method
