Title :
A data-reuse scheme for avoiding unnecessary memory accesses in MPEG-4 ASP video decoder
Author :
Lin, Wei-Cheng ; Chen, Chung-Ho
Author_Institution :
Department of Electrical Engineering and Institute of Computer and Communication Engineering, National Cheng-Kung University, No.1 University Road, Tainan, 70101, China
Abstract :
Due to the inherent characteristics of MPEG video decoder processing which involves bulk data transfers, a large portion of the energy used comes from memory accesses. In this paper, we propose a data-reuse scheme which recognizes the reusable data in frame buffers and a display RAM to avoid unnecessary memory accesses. Extensive experiments for eighteen video sequences exhibiting various image features show that the proposed approach on average reduces the frame buffer accesses by one half and the display RAM accesses by one quarter.
Keywords :
Application specific processors; Buffer storage; Decoding; Flat panel displays; Image reconstruction; Liquid crystal displays; MPEG 4 Standard; Random access memory; Read-write memory; Video compression;
Conference_Titel :
SOC Conference, 2007 IEEE International
Conference_Location :
Hsin Chu, Taiwan
Print_ISBN :
978-1-4244-1592-2
Electronic_ISBN :
978-1-4244-1593-9
DOI :
10.1109/SOCC.2007.4545467
