Synchronization of Video-Embedded 3D Contents for Tiled Display System

Synchronization among screens is very important for correctly working of tiled display systems, which is regarded as one of fundamental technologies for providing a very large and high resolution display. This paper proposes a novel approach to synchronization of animation and video-embedded 3D content, so that complicated 3d virtual scenarios can be playbacked in a tiled fashion over multiple devices. Based on a grid configuration, a display controller collects the information of rendering threads and sends synchronization beacons to all tiled windows in a multicast way and each tiled window will adapt its render progress accordingly. A ready bar-based synchronization method for video is used to overcome the influence of packet losses and the variance of buffering and networking delay on video frames. The experiment results show that all kinds of 3D contents, including 3D models, textures, animations, virtual cursors and videos embedded can be rendered in a consistent way even under poor networking conditions.

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