TW200725268A - Accessing mechanism of a file allocation table - Google Patents

Accessing mechanism of a file allocation table

Info

Publication number
TW200725268A
TW200725268A TW094146871A TW94146871A TW200725268A TW 200725268 A TW200725268 A TW 200725268A TW 094146871 A TW094146871 A TW 094146871A TW 94146871 A TW94146871 A TW 94146871A TW 200725268 A TW200725268 A TW 200725268A
Authority
TW
Taiwan
Prior art keywords
cluster
message
file
fat
continuous
Prior art date
Application number
TW094146871A
Other languages
Chinese (zh)
Inventor
Jun Wang
Chuan-En Jin
Original Assignee
Vimicro Corp Beijing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vimicro Corp Beijing filed Critical Vimicro Corp Beijing
Publication of TW200725268A publication Critical patent/TW200725268A/en

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  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

An accessing method of a file allocation table (FAT) and an apparatus thereof are publicized. Firstly, the FAT is read and a cluster chain structure message for storing a file is extracted before the position message of the first cluster in a continuous cluster of the cluster chain and the length message of the continuous cluster can be confirmed according to the cluster chain structure message of the file. Then, the position message of the first cluster in the continuous cluster and the length message of the continuous cluster are stored sequentially into a buffer area to form a replacement message of the FAT. Finally, read/write of the file is performed according to the replacement message. Since the present invention requires less buffer area for the temporary storage of a cluster chain structure in a FAT and the main processor needs only to send a command once for the access of each file, the work load of the main processor is lessen.
TW094146871A 2005-09-13 2005-12-27 Accessing mechanism of a file allocation table TW200725268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005101026917A CN100419756C (en) 2005-09-13 2005-09-13 File distribution list file system read-write method and device

Publications (1)

Publication Number Publication Date
TW200725268A true TW200725268A (en) 2007-07-01

Family

ID=36139459

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094146871A TW200725268A (en) 2005-09-13 2005-12-27 Accessing mechanism of a file allocation table

Country Status (3)

Country Link
JP (1) JP2007080240A (en)
CN (1) CN100419756C (en)
TW (1) TW200725268A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100485681C (en) * 2006-03-23 2009-05-06 北京握奇数据系统有限公司 Smart card storage system and managing method for file creation in the system
CN100517236C (en) 2006-04-03 2009-07-22 北京握奇数据系统有限公司 Intelligent card embedded operation system and its control method
CN100535935C (en) 2006-12-26 2009-09-02 北京握奇数据系统有限公司 CPUCPU and logic encryption double-purpose smart card and its data synchronization method
CN101908050B (en) * 2009-06-03 2013-04-24 晨星软件研发(深圳)有限公司 File format conversion method
CN101996250B (en) * 2010-11-15 2012-07-25 中国科学院计算技术研究所 Hadoop-based mass stream data storage and query method and system
CN104394371B (en) * 2014-12-01 2017-09-29 北京理工大学 A kind of system for being adapted to a large amount of sequential image acquisitions and quick storage
CN105243090A (en) * 2015-09-10 2016-01-13 北京北信源软件股份有限公司 Exclusive file acquisition method and system
CN111506272B (en) * 2020-07-02 2020-10-27 深圳市千分一智能技术有限公司 Storage method, device and equipment of note file and computer readable storage medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371885A (en) * 1989-08-29 1994-12-06 Microsoft Corporation High performance file system
US5715455A (en) * 1995-05-18 1998-02-03 International Business Machines Corporation Apparatus and method for storing file allocation table efficiently in memory
JP2001056774A (en) * 1999-08-18 2001-02-27 Victor Co Of Japan Ltd File area managing method
JP2002163136A (en) * 2000-11-24 2002-06-07 Matsushita Electric Ind Co Ltd File system
KR100477119B1 (en) * 2002-02-18 2005-03-18 마츠시타 덴끼 산교 가부시키가이샤 File reproduction apparatus and file reproduction method
JP2003308234A (en) * 2002-02-18 2003-10-31 Matsushita Electric Ind Co Ltd File reproducing apparatus and file reproducing method

Also Published As

Publication number Publication date
CN100419756C (en) 2008-09-17
JP2007080240A (en) 2007-03-29
CN1744090A (en) 2006-03-08

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