Patent ID: 7792412

Claim:
A multi-screen video playback system for a multi-screen display, the multi-screen video playback system comprising: a plurality of display units constituting the multi-screen display; a local area network; a plurality of rendering units which are connected to the local area network and output video data to the corresponding display units among the plurality of display units, the video data including frames of video data; and a video-data and playback-control-information delivery device which is connected to the local area network and has a function of delivering the video data to the plurality of rendering units and a function of delivering to the plurality of rendering units playback control information which enables the plurality of rendering units to output the video data to the corresponding display units, the local area network comprising: a video network that connects the video-data and playback-control-information delivery device and each rendering unit, the video network configured to deliver the video data; and a playback-control-information network that connects the video-data and playback-control-information delivery device and each rendering unit, the playback-control-information network being separate from the video network and configured to deliver the playback control information, the playback control information including a synchronization signal which synchronizes the rendering units enabling the plurality of display units to display synchronized images, the synchronized images each being a partial picture corresponding to a dedicated area of the display with respect to the corresponding display units, the partial picture for each area corresponding to each imaging unit separately delivered.