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计算机工程 ›› 2007, Vol. 33 ›› Issue (06): 222-224. doi: 10.3969/j.issn.1000-3428.2007.06.078

• 多媒体技术及应用 • 上一篇    下一篇

基于FPGA的AVS环路滤波器设计与实现

黄中华,支 琤   

  1. (上海交通大学芯片与系统研究中心,上海200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-03-20 发布日期:2007-03-20

Design and Implementation of AVS Loop Filter Based on FPGA

HUANG Zhonghua, ZHI Cheng   

  1. (IC and System Research Center, Shanghai Jiaotong University, Shanghai 200240)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-03-20 Published:2007-03-20

摘要: 根据AVS音视频编码标准中提出的环路滤波算法设计了一个高效的环路滤波器。通过适当地增加片上数据存储空间,使得整个环路滤波的过程占用的带宽资源最小。该滤波器经过仿真验证,对一个完整的4:2:0格式的宏块数据进行环路滤波仅需293个时钟周期。可以被用于1 920×1 080高清图像的AVS解码芯片中。

关键词: AVS, 环路滤波, 去块效应

Abstract: In this paper, according to the arithmetic of loop filter in AVS audio video coding standard, a high effective loop filter circuit is designed. The band width is reduced lowest by increasing data memory on the chip acceptably. The circuit is verified through stimulation and processes a complete chroma format 4:2:0 macroblock data in 293 clock cycle. As a result, the circuit can be used in 1 920×1 080 high definite image AVS decoding IC.

Key words: Audio video coding standard(AVS), Loop filter, Deblock