Video processor

Abstract

A video processor (video processing unit, ‘VPU’), 2, has one or more processing cores, 60, each comprising a memory interface, 69, and at least one requestor unit, 70, 80, which issues memory transaction requests to the memory interface. The requestor unit has a memory access circuit which receives memory access requests and issues corresponding memory transaction requests to the memory interface of the processing core that the requestor unit is part of. The requestor unit also has a dedicated decoding unit, ACTU, which decompresses data as it is read into the requestor unit and provides an uncompressed view of the data to the memory access circuit internal to the requestor unit. The requestor unit may be a video direct memory access unit (VDMA) which reads input frame data into the processing core and writes output frame data to memory, and which decompresses the input frame data as it is read into and compresses the output frame data as it is written out of the VDMA unit.

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