NDLI: A low-power video recording system with H.264/AVC and light-weight compression

Content Provider	IEEE Xplore Digital Library
Author	Hyun Kim Chae Eun Rhee Hyuk-Jae Lee
Copyright Year	2013
Description	Author affiliation: Schoolof Inf. & Commun. Eng., Inha Univ., Incheon, South Korea (Chae Eun Rhee) \|\| Dept. of EECS, Seoul Nat. Univ., Seoul, South Korea (Hyun Kim; Hyuk-Jae Lee)
Abstract	The increasing demand for mobile video recording systems makes it important to reduce the power consumption and to extend the lifetime of the battery. The H.264/AVC compression is widely used for most video recording systems because of its high compression efficiency. However, a complex coding structure of H.264/AVC requires a large amount of computation and also large power consumption as well. Meanwhile, a light weight video compression (LWC) based on DWT and SPIHT consumes less power than H.264/AVC thanks to its relatively simple coding structure although its compression efficiency is lower than that of H.264/AVC. This paper proposes a low-power video recording system that combines both H.264/AVC and LWC. LWC is used to compress video data temporarily. When the temporal data are turned out to be meaningful, they are compressed by the H.264/AVC to be stored permanently. The use of LWC for temporal storage contributes to power saving because LWC consumes less power than H.264/AVC does. For additional power saving, a NAND flash memory instead of an SDRAM is used for temporal storage of video data compressed by LWC. The estimation of power consumption shows that a power reduction of 73.7% is achieved compared to the conventional video recording system which uses only H.264/AVC.
Starting Page	183
Ending Page	188
File Size	248857
Page Count	6
File Format	PDF
ISBN	9781467362382
ISSN	21623562
DOI	10.1109/SiPS.2013.6674502
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-16
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	SPIHT Video recording system light weight compression H.264/AVC low power design
Content Type	Text
Resource Type	Article

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