VIDEO MULTIVIEWER SYSTEM USING DIRECT MEMORY ACCESS (DMA) REGISTERS AND BLOCK RAM

摘要

A video multiviewer system includes a Graphics Processing Unit (GPU) that includes a GPU memory. A video input module is operative with the GPU for receiving video data and transferring the video data to the GPU memory via a Direct Memory Access (DMA). A programmable circuit such as a Field Programmable Gate Array (FPGA) includes a multi-ported and in one aspect a dual ported block Random Access Memory (RAM) configured for a plurality of DMA channels for receiving video data and allowing uninterrupted operation of consecutive DMA transfers of video data to the GPU memory. A display displays the multiple video windows based upon video data received within the GPU memory.