Multi-source video synchronization

Abstract

A system for synchronizing input video signals from a plurality of video sources includes a plurality of buffering units (B1 . . . BN) each coupled to receive a respective one of the input video signals. The buffering units have mutually independent read and write operations. Each buffer write operation is locked to the corresponding video input signal. Each buffer read operation is locked to a system clock. The buffering units are substantially smaller than required to store a video signal field. The system further includes a storage arrangement (DRAM-1 . . . DRAM-M) for storing a composite signal composed from the input video signals, and a communication network (110) for communicating data from the buffering units to the storage arrangement, pixel (X) and line (Y) addresses of the buffering units and of the storage arrangement being coupled.

Dependencies are inferred from the claim text.