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Ko, Sungahn
IVADER: Interactive Visual Analysis and Data Exploration Research
Research Interests
  • Information visualization, visual analytics, human-computer interaction (HCI)

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NLE-FFS: A flash file system with PRAM for non-linear editing

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Title
NLE-FFS: A flash file system with PRAM for non-linear editing
Author
Seo Man-KeunKo, SungahnPark YoungwooPark Kyu Ho
Keywords
Flash file system; NAND flash memory; PRAM; Non-linear editing; Mobile multimedia device
Issue Date
2009-11
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, v.55, no.4, pp.2016 - 2024
Abstract
For efficient non-linear editing (NLE) operations, a flash file system should be designed considering three factors: data indexing, system calls and frame header updates. Based on the hybrid architecture of phase-change RAM (PRAM) and NAND flash, we introduce a non-linear editing flash file system (NLE-FFS) which is designed for mobile multimedia devices that support NLE. In the proposed file system, the following three features are proposed. First, new data indexing scheme is proposed that is not limited by page-alignment constraint. Not only does it deal effectively with large multimedia files, it also facilitates flexible datamanagement. Second, new system calls are proposed that minimize re-write overhead due to NLE operations by updating a small amount Of metadata. Finally, an H-data block is proposed to reduce the overhead caused by frame header updates. The H-data block is a PRAM region reserved for frame header data updates. It alloys byte-level updates instead of page-level updates; hence, several bytes of frame headers can be effectively updated in this region.
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DOI
10.1109/TCE.2009.5373764
ISSN
0098-3063
Appears in Collections:
ECE_Journal Papers
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