基于H.264的熵编码结构  

VLSI Architecture for H.264 Entropy Encoding

作　　者：何俊[1] 田应洪[1] 洪志良[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《计算机工程》2008年第6期229-232,共4页Computer Engineering

基　　金：华为科技基金资助项目(YJCB2005019BA)

摘　　要：Exp-Golomb和CAVLC是H.264引入的新的熵编码形式,通过引入上下文的方式,减少编码码流,提高鲁棒性。该文提出一种熵编码的硬件结构,采用全0子块探测,双RAM结构,流水线技术,以及通过计算代替查找表的方法,加快编码过程,同时减少硬件的复杂度。FPGA综合结果显示,关键路径为11.449ns,系统时钟最高支持到87.346MHz。This paper presents a high performance VLSI architecture design for H.264/AVC entropy encoding. In the design, a fast encode all-zeros block method is proposed to accelerate the encoding process. A double RAM method is designed to avoid the mistake of storage and be easy to control data as a block. A pipeline technology is proposed to erase the RAM and make the process faster. The synthesis result shows the proposed architecture can improve the performance of the CAVLC.

关 键 词：基于内容的变长编码 指数哥伦布编码 H.264协议 超大规模集成电路 

分 类 号：TN919.81[电子电信—通信与信息系统]