A group-based low delay variable length decoder for MPEG-4
A new grouping method for variable-length code (VLC) table is presented. It takes advantage of a unified look up table and generates the table address by comparing the input data bit-by-bit. In theory, it can significantly decrease the critical path delay of the circuit. Experimental result shows that the decoding speed is 2 cycles per no-escape code and 2 to 4 cycles per escape code. The decoder has been integrated into a mpeg-4 decoder of 1080P video. And the FPGA prototype result shows that the frequency could achieve 255MHz.
group-based variable length decoding low-latency MPEG-4
HU Xue-quan DU Gao-ming ZHANG Duo-li SONG Yu-kun GAO Ming-lun
Institute of VLSI Design, Hefei University of Technology Hefei, China
国际会议
2009 International Workshop on Information Security and Application(2009 信息安全与应用国际研讨会)
青岛
英文
372-375
2009-11-21（万方平台首次上网日期，不代表论文的发表时间）