Design of Bitstream Co-processor for Multimedia Applications

Author

Yingke Gao ; Huan Ying ; Zhiyuan Xue ; Tiejun Zhang ; Donghui Wang ; Chaohuan Hou

Author_Institution

Digital Syst. Integration Lab., Inst. of Acoust., Beijing, China

fYear

2013

fDate

21-22 Dec. 2013

Firstpage

227

Lastpage

230

Abstract

Variable length coding (VLC) is widely used in the entropy codec part of various video codec standards. Its parallelism is difficult to be developed due to its inherent bit-serial characteristic. As it becomes the system bottleneck of real-time video decoding, this paper presents a bitstream co-processor which greatly accelerates the codec of VLC by designing corresponding bitstream instructions. With SuperV DSP as the research prototype, the area cost of the bitstream co-processor only increases by 1.71% while the performance of the application of entropy decoding is improved about 73% on average.

Keywords

coprocessors; digital signal processing chips; video coding; SuperV DSP; VLC; bit-serial characteristic; bitstream coprocessor design; bitstream instructions; digital signal processor; entropy decoding; multimedia applications; real-time video decoding; variable length coding; video codec standards; Codecs; Decoding; Entropy; Multimedia communication; Standards; Table lookup; VLIW; VLC; bitstream; bitstream instruction; co-processor; multimedia application;

fLanguage

English

Publisher

ieee

Conference_Titel

Dependable, Autonomic and Secure Computing (DASC), 2013 IEEE 11th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3380-8

Type

conf

DOI

10.1109/DASC.2013.66

Filename

6844366