Video multiviewer system using direct memory access (dma)...

Details Video multiviewer system using direct memory access (dma)... Video multiviewer system using direct memory access (dma)...

G - Physics

09

G

G09G 5/393 (2006.01) G06F 13/28 (2006.01) H04N 5/44 (2006.01)

Patent

CA 2661678

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.

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