High throughput bandwidth optimized VLSI design for motion compensation in AVS HDTV decoder
High throughput bandwidth optimized VLSI design for motion compensation in AVS HDTV decoder作者机构:Department of lnformation Science and Electronic Engineering Zhejiang University Hangzhou 310027 China
出 版 物:《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报(英文版)A辑(应用物理与工程))
年 卷 期:2008年第9卷第6期
页 面:822-832页
核心收录:
学科分类:0810[工学-信息与通信工程] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 081001[工学-通信与信息系统] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:(No. Y106574) supported by the Natural Science Foundationof Zhejiang Province China
摘 要:In this paper we present a motion compensation (MC) design for the newest Audio Video coding Standard (AVS) of China. Because of compression-efficient techniques of variable block size (VBS) and sub-pixel interpolation, intensive pixel calculation and huge memory access are required. We propose a parallel serial filtering mixed luma interpolation data flow and a three-stage multiplication free chroma interpolation scheme. Compared to the conventional designs, the integrated architecture supports about 2.7 times filtering throughput. The proposed MC design utilizes Vertical Z processing order for reference data re-use and saves up to 30% memory bandwidth. The whole design requires 44.3k gates when synthesized at 108 MHz clock frequency using 0.18-μm CMOS technology and can support up to 1920×1088@30 fps AVS HDTV video decoding.