Embedded NAND flash file system for mobile multimedia devices

Author

Kim, Hyojun ; Won, Youjip ; Kang, Sooyong

Author_Institution

Samsung Electron., Suwon, South Korea

Volume

55

Issue

2

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

545

Lastpage

552

Abstract

In this work, we present a novel mobile multimedia file system, MNFS, which is specifically designed for NAND flash memory. Our design specifically addresses the needs of devices such as MP3 players, personal media players (PMPs), digital camcorders, etc. The file system has three novel features important in mobile multimedia applications: (1) predictable and uniform write latency, (2) quick file system mount, and (3) a small memory footprint. We implemented the proto-type file system on an embedded platform. In our experiments, MNFS exhibits uniform I/O latency for sequential write operation. It is mountable within 0.2 seconds and available with only 34 Kbytes of heap memory for a 128 Mbytes volume. The mounting time is 30 times faster compared to that of YAFFS, which is a well known file system for NAND flash memory, and the heap memory usage is only 5% of the YAFFS usage.

Keywords

NAND circuits; flash memories; multimedia systems; embedded NAND flash file system; flash memory; mobile multimedia devices; quick file system mount; small memory footprint; uniform write latency; Computer architecture; Delay; Digital audio players; Electric shock; File systems; Image storage; Mobile computing; Multimedia systems; Portable media players; Video equipment; device, Mobile multimedia device, Multimedia; file system, NAND Flash memory;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2009.5174420

Filename

5174420