Memory bandwidth reduction using frame pipeline in video codec chips

IEICE Electronics Express

Ki-Hoon Lee²  Yun Gu Lee¹  Woosaeng Kim¹ 

[1] Department of Computer Science and Engineering, Kwangwoon University;Department of Computer Engineering, Kwangwoon University

关键词: video coding;    codec;    memory bandwidth reduction;   

DOI  :  10.1587/elex.11.20140592

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)An image processing chip includes many image processing engines requesting heavy external memory access. So bus traffic is a critical issue in real-time systems. An video encoder is one of blocks requesting the most heavy external memory access among them. This letter presents a method to reduce the external memory requests for accessing reference frames in video codec chips. The method pipelines a video in a frame level, and the intermediate reconstructed data is used in the next frame without storing it to external memory. Thereby the proposed algorithm reduces the external memory access with reasonable internal memory increase.

【 授权许可】

Unknown