Realization method of AVS (Audio Video Standard) inverse transformation based on reconfiguration technology

An implementation method and an inverse transformation technology, applied in the field of AVS inverse transformation, can solve the problems of increased power consumption, the number of cells and the interconnection area, etc., and achieve the effect of high practicability, saving development costs, and saving development time.

Inactive Publication Date: 2012-05-02
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, as the scale and complexity of the algorithm increase, the number of FPGA units and t

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  • Realization method of AVS (Audio Video Standard) inverse transformation based on reconfiguration technology
  • Realization method of AVS (Audio Video Standard) inverse transformation based on reconfiguration technology
  • Realization method of AVS (Audio Video Standard) inverse transformation based on reconfiguration technology

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Embodiment Construction

[0047] Embodiments of the present invention are described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0048] In this embodiment, the reconfigurable processing unit is the core part, and its internal structure is as follows figure 1 As shown, inside the RPU, the width of all memories and FIFO queues is 256 bits, and the data port of each module is also 256 bits. The RPU and ARM communicate through a 32-bit AHB bus, and the SRAM communicates through a memory interface (EMI: External Memory Interface) and the 64-bit Fast bus communicate with the RPU. Here's a brief description of it:

[0049] The RPU is divided into 4 reconfigurable arrays (RCA: Reconfigurable Cell Array), each array includes 64 processing units (these 64 PE...

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Abstract

The invention relates to a realization method of AVS (Audio Video Standard) inverse transformation based on a reconfiguration technology, and the method comprises the following steps of: firstly, carrying out algorithm analysis, namely analyzing a C code of an algorithm and extracting a DFG (Data Flow Graph) of the algorithm to obtain a data transmission requirement of the algorithm; secondly, dividing and mapping the DFG according results of the algorithm analysis and a frame of a reconfigurable array, so as to design the optimal data transmission scheme; thirdly, utilizing a configuration tool to generate configuration characters of the reconfigurable array according to the results of the two previous steps; and finally, loading configuration information into a configuration information memorizer of the reconfigurable array through an ARM (Advanced RISC Machine) processor, so as to reconfigure the reconfigurable array into an acceleration module which is specially used for executing the inverse transformation. According to the realization method provided by the invention, a complicated chip design process is not needed, so that the development time and the development cost can be greatly saved and the practical applicability is very high.

Description

technical field [0001] The present invention relates to a method in the field of embedded video decoding, in particular to an implementation method of AVS inverse transformation based on reconfigurable technology. Background technique [0002] With the development of video standards, the effect and performance of video compression are getting better and better, but its complexity and calculation amount are also greatly increased. Correspondingly, to realize real-time decoding at the decoding end, high requirements are put forward for the data parallelism and computing efficiency of the hardware. [0003] Standard (Audio and Video Coding Standard) is a second-generation source coding standard proposed by my country with independent intellectual property rights, and its coding efficiency is equivalent to that of H.264. Its video part officially became a national standard in 2006. [0004] Transform coding is an important method to remove the spatial correlation of pixels and...

Claims

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Application Information

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IPC IPC(8): H04N7/30H04N7/26H04N19/625
Inventor 王浩熊一舟何卫锋绳伟光毛志刚
Owner SHANGHAI JIAO TONG UNIV
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