JP4471007B2 - 記録装置、記録装置の制御方法、記録装置の制御方法のプログラム及び記録装置の制御方法のプログラムを記録した記録媒体 - Google Patents
記録装置、記録装置の制御方法、記録装置の制御方法のプログラム及び記録装置の制御方法のプログラムを記録した記録媒体 Download PDFInfo
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- 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
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- 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
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- 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
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- 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
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Description
図2は、本発明の実施例1の記録装置であるディジタルビデオカメラを示すブロック図である。このディジタルビデオカメラ11において、光学レンズ部12は、光電変換部13の撮像面に被写体の光学像を形成する。カメラ機能部14は、中央処理ユニット(CPU)15の制御により、光学レンズ部12の焦点距離、絞りを可変制御する。光電変換部13は、例えばCMOS(Complementary Metal-Oxide Semiconductor )固体撮像素子、CCD(Charge Coupled Device )固体撮像素子等により作成され、撮像面に形成された光学像の光電変換結果を出力する。
以上の構成において、このディジタルビデオカメラ11では(図2)、光学レンズ部12、光電変換部13、画像信号処理部16により得られる画像データ、音声入出力部19、音声処理部20により得られる音声データが、中央処理ユニット15に入力され、ここでデータ圧縮された後、ドライブ24を介して各種の記録媒体に記録される。ここでディジタルビデオカメラ11では、この記録媒体にFATファイルシステムが適用されることから、従来手法による場合には、各記録媒体のデータ領域にクラスタ単位で順次データを記録した後、このデータ領域の記録に対応するように管理領域であるシステム領域の管理情報(FATエントリ、ディレクトリエントリ)を更新して1つのファイルの記録が完了する。
以上の構成によれば、一定データ量を記録する毎に管理情報を更新するようにして、記録媒体がフラッシュメモリ等による記録媒体である場合、消去ブロックサイズが増大するに従ってこの一定データ量を増大させることにより、一定データ量を記録する毎に、FATエントリ等の記録を更新する場合に、記録媒体の極端な使用可能年数の低下を低減することができる。
Claims (6)
- 着脱可能に保持された記録媒体の種類を検出する種類検出部と、
前記記録媒体の消去ブロックサイズを検出する消去ブロックサイズ検出部と、
前記記録媒体のデータ領域に所望のデータを記録すると共に、前記記録媒体の管理領域に前記データ領域の管理情報を記録する記録部と、
前記種類検出部及び前記消去ブロックサイズ検出部の検出結果に基づいて、前記記録部にコマンドを発行して前記記録部を制御する制御部と、
前記記録媒体に対するデータ転送速度を検出する転送速度検出部と
を備え、
前記制御部は、
一定データ量を前記データ領域に記録する毎に、前記データ領域への記録に対応して前記管理情報を更新し、
前記記録媒体が、前記消去ブロックサイズ単位で記録したデータを更新する記録媒体である場合、前記消去ブロックサイズが増大するに従って増大させるように前記一定データ量を管理し、
前記記録部に対して1回の書込みコマンドで前記記録媒体に記録するまとめ書きサイズと、前記コマンドの発行回数で前記管理情報を更新する周期を設定するカウント値とを、前記データ転送速度が増大するに従って低下するように設定する
ことを特徴とする記録装置。 - 前記一定データ量が、
前記消去ブロックサイズの整数倍に対応するデータ量である
ことを特徴とする請求項1に記載の記録装置。 - 前記まとめ書きサイズが、
前記消去ブロックサイズの整数倍に対応するデータ量である
ことを特徴とする請求項1又は2に記載の記録装置。 - 着脱可能に保持された記録媒体の種類を検出する種類検出ステップと、
前記記録媒体の消去ブロックサイズを検出する消去ブロックサイズ検出ステップと、
前記記録媒体のデータ領域に所望のデータを記録すると共に、前記記録媒体の管理領域に前記データ領域の管理情報を記録する記録ステップと、
前記種類検出ステップ及び前記消去ブロックサイズ検出ステップの検出結果に基づいて、前記記録ステップにコマンドを発行して前記記録ステップを制御する制御ステップと、
前記記録媒体に対するデータ転送速度を検出する転送速度検出ステップと
を有し、
前記制御ステップは、
一定データ量を前記データ領域に記録する毎に、前記データ領域への記録に対応して前記管理情報を更新し、
前記記録媒体が前記消去ブロックサイズ単位で記録したデータを更新する記録媒体である場合、前記消去ブロックサイズが増大するに従って増大させるように前記一定データ量を管理し、
前記記録部に対して1回の書込みコマンドで前記記録媒体に記録するまとめ書きサイズと、前記コマンドの発行回数で前記管理情報を更新する周期を設定するカウント値とを、前記データ転送速度が増大するに従って低下するように設定する
ことを特徴とする記録方法。 - 着脱可能に保持された記録媒体に所望のデータを記録する記録方法のプログラムにおいて、
前記記録媒体の種類を検出する種類検出ステップと、
前記記録媒体の消去ブロックサイズを検出する消去ブロックサイズ検出ステップと、
前記記録媒体のデータ領域に所望のデータを記録すると共に、前記記録媒体の管理領域に前記データ領域の管理情報を記録する記録ステップと、
前記種類検出ステップ及び前記消去ブロックサイズ検出ステップの検出結果に基づいて、前記記録ステップにコマンドを発行して前記記録ステップを制御する制御ステップと、
前記記録媒体に対するデータ転送速度を検出する転送速度検出ステップと
を有し、
前記制御ステップは、
一定データ量を前記データ領域に記録する毎に、前記データ領域への記録に対応して前記管理情報を更新し、
前記記録媒体が前記消去ブロックサイズ単位で記録したデータを更新する記録媒体である場合、前記消去ブロックサイズが増大するに従って増大させるように前記一定データ量を管理し、
前記記録部に対して1回の書込みコマンドで前記記録媒体に記録するまとめ書きサイズと、前記コマンドの発行回数で前記管理情報を更新する周期を設定するカウント値とを、前記データ転送速度が増大するに従って低下するように設定する
ことを特徴とする記録方法のプログラム。 - 着脱可能に保持された記録媒体に所望のデータを記録する記録方法のプログラムを記録した記録媒体において、
前記記録方法のプログラムは、
前記記録媒体の種類を検出する種類検出ステップと、
前記記録媒体の消去ブロックサイズを検出する消去ブロックサイズ検出ステップと、
前記記録媒体のデータ領域に所望のデータを記録すると共に、前記記録媒体の管理領域に前記データ領域の管理情報を記録する記録ステップと、
前記種類検出ステップ及び前記消去ブロックサイズ検出ステップの検出結果に基づいて、前記記録ステップにコマンドを発行して前記記録ステップを制御する制御ステップと、
前記記録媒体に対するデータ転送速度を検出する転送速度検出ステップと
を有し、
前記制御ステップは、
一定データ量を前記データ領域に記録する毎に、前記データ領域への記録に対応して前記管理情報を更新し、
前記記録媒体が前記消去ブロックサイズ単位で記録したデータを更新する記録媒体である場合、前記消去ブロックサイズが増大するに従って増大させるように前記一定データ量を管理し、
前記記録部に対して1回の書込みコマンドで前記記録媒体に記録するまとめ書きサイズと、前記コマンドの発行回数で前記管理情報を更新する周期を設定するカウント値とを、前記データ転送速度が増大するに従って低下するように設定する
ことを特徴とする記録方法のプログラムを記録した記録媒体。
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| JP2008025073A JP4471007B2 (ja) | 2008-02-05 | 2008-02-05 | 記録装置、記録装置の制御方法、記録装置の制御方法のプログラム及び記録装置の制御方法のプログラムを記録した記録媒体 |
| US12/339,539 US8209467B2 (en) | 2008-02-05 | 2008-12-19 | Recording apparatus, recording method, program for recording method, and storage medium that stores program for recording method |
| EP09150895A EP2117007A3 (en) | 2008-02-05 | 2009-01-20 | Managing the amount of data according to batch writing size and to update count, which increases with erase-block size and depends on the type of flash memory |
| TW098102290A TWI382309B (zh) | 2008-02-05 | 2009-01-21 | 記錄裝置、記錄裝置之控制方法、記錄裝置之控制方法之程式及記錄著記錄裝置之控制方法之程式的記錄媒體 |
| CN200910008587XA CN101504593B (zh) | 2008-02-05 | 2009-02-03 | 记录装置、记录装置的控制方法、记录装置控制方法的程序 |
| KR1020090009321A KR20090086049A (ko) | 2008-02-05 | 2009-02-05 | 기록 장치, 기록 장치의 제어 방법, 기록 장치의 제어 방법의 프로그램 및 기록 장치의 제어 방법의 프로그램을 기록한 기록 매체 |
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| JP5523081B2 (ja) * | 2009-12-16 | 2014-06-18 | キヤノン株式会社 | 記録装置 |
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| JP5488019B2 (ja) * | 2010-02-10 | 2014-05-14 | ソニー株式会社 | 記録装置、撮像記録装置、記録方法及びプログラム |
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