JP2002513484A - フラッシュメモリ大容量記憶システム - Google Patents
フラッシュメモリ大容量記憶システムInfo
- Publication number
- JP2002513484A JP2002513484A JP52657998A JP52657998A JP2002513484A JP 2002513484 A JP2002513484 A JP 2002513484A JP 52657998 A JP52657998 A JP 52657998A JP 52657998 A JP52657998 A JP 52657998A JP 2002513484 A JP2002513484 A JP 2002513484A
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- Prior art keywords
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- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0616—Improving the reliability of storage systems in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7203—Temporary buffering, e.g. using volatile buffer or dedicated buffer blocks
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Read Only Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.大容量記憶システムを実現するためにフラッシュメモリを使用する方法であ って、 (a)前記フラッシュメモリを複数のブロックに分割し、 (b)前記複数のブロックから第1のタイプのブロックを形成し、前記第1の タイプのブロックを予め決められたアドレッシングスキームに関して編成 されたデータをストアするのに使用し、 (c)前記複数のブロックから第2のタイプのブロックを形成し、前記第2の ブロックを、前記第1のタイプのブロックのうちの一つに書き込まれるよ うになっているデータをストアするための一時的なバッファとして使用し 、 (d)消去される有効なデータを包含するブロックの第3のタイプを形成し、 (e)前記複数のブロックのうちの少なくとも一つを、前記第1、前記第2及 び前記第3のタイプのブロックのうちの一つから別のタイプに変更する、 ステップを含む、前記方法。 2.(a)物理識別を前記複数のブロックの各々に割り当て、 (b)論理アドレスを前記第1のタイプのブロックの各ブロックに割り当て、 (c)前記物理識別を前記論理アドレスにマッピングする、 ステップを更に含む、請求の範囲第1項に記載の方法。 3.前記第1のタイプのブロックのうちの選択された一つに既にストアされたデ ータを更新するステップを、更に有する請求の範囲第2項に記載の方法。 4.前記更新ステップが、 (a)更新される必要があるデータを包含する前記第1のタイプのブロックを 識別し、 (b)前記第3のタイプからのブロックを割り当て、前記割り当てられたブロ ックを前期第2のタイプのブロックに変更し、 (c)前記更新されたデータを前記割り当てられたブロック内に書き込む、 ステップを含む、請求の範囲第3項に記載の方法。 5.前記更新されたデータが前記割り当てられたブロック内に書きこまれた後に 、 前記第2のタイプの前記識別されたブロックをダーティとマークするステップ を更に含む、請求の範囲第4項に記載の方法。 6.前記更新されたデータが前記割り当てられたブロックに書きこまれた後に、 前記第2のタイプの前記識別されたブロックをusedとマークするステップ を更に含む、請求の範囲第4項に記載の方法。 7.前記更新ステップが更に、 (a)前記識別ブロックを前記第3のタイプに変更し、 (b)前記割り当てられたブロックを前記第1のタイプに変更する、 ステップを更に含む、請求の範囲第4項に記載の方法。 8.前記識別ブロックが割り当て済み論理アドレスを有し、前記割り当てられた ブロックを変更することが、前記割り当てられたブロックを前記割り当て済み 論理アドレスを有するブロックに変更するステップを有する、請求の範囲第6 項に記載の方法。 9.前記定義済みアドレッシングスキームがセクタベースアドレッシングスキー ムである、請求の範囲第1項に記載の方法。 10.前記定義ズムアドレッシングスキームが論理ブロックアドレスである、請 求の範囲第8項に記載の方法。 11.フラッシュメモリシステムが、 (i)線形アドレッシングスキームに論理的に編成されたデータをストアする ための第1のタイプのブロックと、 (ii)前記第1のタイプのブロックのうちの一つに書きこまれることになって いるデータを一時的にストアするための第2のタイプのブロックと、 (iii)消去されるべきであるブロックを含む第3のタイプのブロックと、 に分割される複数のブロックを有し、 前記複数のブロックの各々が、複数のフラッシュメモリセルを有し、 前記第2のタイプのブロックが前記第1のタイプのブロックに変更可能であ り、前記第1のタイプのブロックが前記第3のタイプのブロックに変更可能で ある、 前記フラッシュメモリシステム。 12.前記複数のブロックの各々が物理識別に割り当てられ、前記第1のタイプ のブロックが論理アドレッシングスキームを実行するのに使用され、前記シス テムが前記物理識別を前記論理アドレッシングスキームにマッピングするため のバッファを更に有する、請求の範囲第10項に記載のシステム。 13.前記論理アドレッシングスキームがセクタベースアドレッシングスキーム を有する、請求の範囲第11項に記載のシステム。 14.各ブロックが、領域に関係するブロックに関連する属性情報をストアする のに使用される前記領域を有する、請求の範囲第10項に記載のシステム。 15.各ブロックが複数のセクタを有する、請求の範囲第10項に記載のシステ ム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/756,304 | 1996-11-25 | ||
US08/756,304 US5745418A (en) | 1996-11-25 | 1996-11-25 | Flash memory mass storage system |
PCT/US1996/018973 WO1998024029A1 (en) | 1996-11-25 | 1996-11-26 | Flash memory mass storage system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002513484A true JP2002513484A (ja) | 2002-05-08 |
JP4005142B2 JP4005142B2 (ja) | 2007-11-07 |
Family
ID=25042900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52657998A Expired - Lifetime JP4005142B2 (ja) | 1996-11-25 | 1996-11-26 | フラッシュメモリ大容量記憶システム |
Country Status (5)
Country | Link |
---|---|
US (2) | US5745418A (ja) |
EP (1) | EP0882264B1 (ja) |
JP (1) | JP4005142B2 (ja) |
DE (1) | DE69635962T2 (ja) |
WO (1) | WO1998024029A1 (ja) |
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JP2009211228A (ja) * | 2008-03-01 | 2009-09-17 | Toshiba Corp | メモリシステム |
WO2011068109A1 (ja) * | 2009-12-03 | 2011-06-09 | 株式会社日立製作所 | 記憶装置、およびメモリコントローラ |
JP4773342B2 (ja) * | 2004-04-28 | 2011-09-14 | パナソニック株式会社 | 不揮発性記憶装置及びデータ書込み方法 |
WO2013161398A1 (ja) * | 2012-04-25 | 2013-10-31 | ソニー株式会社 | シーケンシャル書き込みを行う不揮発性メモリ装置 |
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Also Published As
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EP0882264A1 (en) | 1998-12-09 |
JP4005142B2 (ja) | 2007-11-07 |
US5745418A (en) | 1998-04-28 |
WO1998024029A1 (en) | 1998-06-04 |
DE69635962D1 (de) | 2006-05-11 |
US5933368A (en) | 1999-08-03 |
DE69635962T2 (de) | 2006-11-16 |
EP0882264B1 (en) | 2006-03-22 |
EP0882264A4 (en) | 2002-09-04 |
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