Decoding device
AssigneePanasonic Corporation
InventorsTien Ping Chua, Mi Michael Bi
Life of this patent
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Abstract
Provided is a decoding device which can perform video decoding in a real time with a sophisticated video specification requiring a frequent access to an external memory. A video decoding device (100) includes a hardware video decoder (115) which executes decoding of a pixel coefficient and write of a reconfigured picture into an external memory (110). A hardware video decoder (115) includes: a hardware engine pipeline (201) formed by a plurality of hardware engines requiring a DMA read access or a DMA write access to the external memory (110) or both of the accesses; and a hardware video decoder DMA controller (200) which adjusts all the DMA accesses from the hardware engines to one DMA channel or a plurality of DMA channels to a DMA controller (111).
Claims6
A decoding apparatus comprising:
- an external memory;
- a direct memory access controller that controls direct memory access to the external memory;
- and
- a plurality of components that share use of the external memory through the direct memory access controller,
- wherein the plurality of components include:
- a hardware video decoder that decodes pixel coefficients and writes a reconstructed picture to the external memory;
- and
- a core processor that controls the hardware video decoder using parameters obtained by analyzing a compressed video bit stream.
Dependencies are inferred from the claim text.