JP4392601B2 - データアクセス装置および記録媒体 - Google Patents
データアクセス装置および記録媒体 Download PDFInfo
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- JP4392601B2 JP4392601B2 JP2004138614A JP2004138614A JP4392601B2 JP 4392601 B2 JP4392601 B2 JP 4392601B2 JP 2004138614 A JP2004138614 A JP 2004138614A JP 2004138614 A JP2004138614 A JP 2004138614A JP 4392601 B2 JP4392601 B2 JP 4392601B2
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- 239000004065 semiconductor Substances 0.000 claims description 8
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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
- G06F3/0661—Format or protocol conversion 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
- G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
-
- 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
- G06F3/061—Improving I/O performance
- G06F3/0613—Improving I/O performance in relation to throughput
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99932—Access augmentation or optimizing
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- Television Signal Processing For Recording (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
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Description
・書き込むべきアドレスを含む消去ブロックのデータを一時バッファに読み出す。
・その後に当該消去ブロックを消去する。
・一時バッファ上で書き込むべき断片データを上書きする。
・一時バッファ上のデータを当該消去ブロックに書き戻す。
前記パラメータは、前記データサイズと、当該データサイズでデータを前記記録媒体に対して読み書きするのに要する時間に関する情報とを互いに対応させたテーブルであり、
前記データサイズそれぞれでデータが書き込まれる際におけるデータ転送効率を示すパラメータが記録された記憶部と、
データアクセス装置が送信する必要データ転送効率を示す情報を受けて、前記記憶部に記憶されたパラメータに照合することで、データ書き込み時における最適データサイズを選択する手段と、
選択した最適データサイズを示す情報を、前記データアクセス装置に送信する手段と、
を有する。
上記記録媒体に、データを読み書きするデータアクセス装置であって、
当該データアクセス装置で読み書き対象とするデータの方式において規定される所定の必要データ転送効率を示す情報を、前記記録媒体に送信する手段と、
前記必要データ転送効率を示す情報を受信した前記記録媒体が送信する最適データサイズを示す情報に基づいてデータ書き込み時におけるデータサイズを設定し、そのデータサイズで前記記録媒体との間でデータの読み書きを行う手段と、
を有する。
図1〜図4を参照してDV方式のデジタルビデオデータを実時間記録するシステム構成を例にした本発明の参考例を説明する。図1はメモリカード型記録媒体(以下、メモリカードという)とアクセス装置の関係を示しており、記録媒体であるメモリカード101は、コマンド解析手段102、遅延パラメータ103、および遅延パラメータ読み出し手段104を有する。本実施形態では、遅延パラメータ読み出し手段104から、パラメータを読み出してデータアクセス装置に送信する手段が構成される。
図5,図6を参照して、本発明の実施の形態2を説明する。なお、実施の形態2の基本構成は、図1〜図4に示す参考例と同様であるため、それらの構成については説明を省略する。
103 遅延パラメータ 104 遅延パラメータ読み出し手段
105 データアクセス装置
106 遅延パラメータ読み出しコマンド発行手段
107 データ再生手段 108 データ記録手段
109 最適データサイズ選択手段
202 記憶領域 203 ユーザ領域
204 システム領域 601 メモリカード
602 コマンド解析手段 603 遅延パラメータ
604 遅延パラメータ読み出し手段
605 最適データサイズ選択手段
607 最適データサイズ読み出しコマンド発行手段
608 データ再生手段 609 データ記録手段
Claims (3)
- 段階的に増減可能なデータサイズ単位でデータが読み書きされるとともに、データが書き込まれる際におけるデータ転送効率が前記データサイズに応じて変動し、かつ前記データサイズそれぞれでデータが書き込まれる際におけるデータ転送効率を示すパラメータが記録された記録媒体であって、
前記パラメータは、前記データサイズと、当該データサイズでデータを前記記録媒体に対して読み書きするのに要する時間に関する情報とを互いに対応させたテーブルであり、
前記データサイズそれぞれでデータが書き込まれる際におけるデータ転送効率を示すパラメータが記録された記憶部と、
データアクセス装置が送信する必要データ転送効率を示す情報を受けて、前記記憶部に記憶されたパラメータに照合することで、データ書き込み時における最適データサイズを選択する手段と、
選択した最適データサイズを示す情報を、前記データアクセス装置に送信する手段と、
を有することを特徴とする記録媒体。 - 請求項1に記載の記録媒体に、データを読み書きするデータアクセス装置であって、
当該データアクセス装置で読み書き対象とするデータの方式において規定される所定の必要データ転送効率を示す情報を、前記記録媒体に送信する手段と、
前記必要データ転送効率を示す情報を受信した前記記録媒体が送信する最適データサイズを示す情報に基づいてデータ書き込み時におけるデータサイズを設定し、そのデータサイズで前記記録媒体との間でデータの読み書きを行う手段と、
を有することを特徴とするデータアクセス装置。 - 前記記録媒体は半導体メモリであり、
前記データサイズは、前記記録媒体の消去ブロックサイズの整数倍の大きさである、
ことを特徴とする請求項1に記載の記録媒体。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004138614A JP4392601B2 (ja) | 2004-05-07 | 2004-05-07 | データアクセス装置および記録媒体 |
EP05736645.2A EP1746491B1 (en) | 2004-05-07 | 2005-04-27 | Method for accessing data, apparatus and recording medium for performing that method |
PCT/JP2005/007996 WO2005109169A1 (ja) | 2004-05-07 | 2005-04-27 | データアクセス方法、およびその方法が実施される装置と記録媒体 |
US10/587,239 US7631140B2 (en) | 2004-05-07 | 2005-04-27 | Data accessing method, device in which the data accessing method is executed and recording medium |
CNB200580014645XA CN100468308C (zh) | 2004-05-07 | 2005-04-27 | 数据存取方法,执行数据存取方法的器件及记录装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004138614A JP4392601B2 (ja) | 2004-05-07 | 2004-05-07 | データアクセス装置および記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005321952A JP2005321952A (ja) | 2005-11-17 |
JP4392601B2 true JP4392601B2 (ja) | 2010-01-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004138614A Expired - Lifetime JP4392601B2 (ja) | 2004-05-07 | 2004-05-07 | データアクセス装置および記録媒体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7631140B2 (ja) |
EP (1) | EP1746491B1 (ja) |
JP (1) | JP4392601B2 (ja) |
CN (1) | CN100468308C (ja) |
WO (1) | WO2005109169A1 (ja) |
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