JP4964940B2 - データの保護方法とシステム、記憶デバイス及び記憶デバイスコントローラ - Google Patents
データの保護方法とシステム、記憶デバイス及び記憶デバイスコントローラ Download PDFInfo
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00833—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction limits the data access speed, e.g. by defining a maximum bit rate of the I/O interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
- G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
- G11B2020/10675—Data buffering arrangements, e.g. recording or playback buffers aspects of buffer control
- G11B2020/10694—Data buffering arrangements, e.g. recording or playback buffers aspects of buffer control output interface, i.e. the way data leave the buffer, e.g. by adjusting the clock rate
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
- G11B2020/1075—Data buffering arrangements, e.g. recording or playback buffers the usage of the buffer being restricted to a specific kind of data
- G11B2020/10759—Data buffering arrangements, e.g. recording or playback buffers the usage of the buffer being restricted to a specific kind of data content data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10833—Copying or moving data from one record carrier to another
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10935—Digital recording or reproducing wherein a time constraint must be met
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10935—Digital recording or reproducing wherein a time constraint must be met
- G11B2020/10944—Real-time recording or reproducing, e.g. for ensuring seamless playback of AV data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/17—Card-like record carriers
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Storage Device Security (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
Claims (6)
- 記憶デバイス内のデータを、ホストが前記データにアクセスする際に保護するためのデータ保護方法であって、
前記記憶デバイスの記憶デバイスコントローラによって、前記ホストが前記記憶デバイス内の前記データの再生操作を実行するか、前記データのコピー操作を実行するかを、前記記憶デバイスのデータ出力量に従って決定するステップと、
前記記憶デバイスによって、前記決定の結果に従って、2つ以上の読取り応答を提供するステップとを含み、
前記決定の結果に従って2つ以上の読取り応答を提供する前記ステップは、
前記記憶デバイスコントローラが、前記ホストが前記データの再生操作を実行することを決定したら、前記読取り応答のうちの1つを提供し、前記記憶デバイスによる再生操作の実行を継続して前記ホストが前記データにアクセスすることを許容し、前記記憶デバイスコントローラが、前記ホストが前記データのコピー操作を実行することを決定したら、前記読取り応答のうちのもう一方を提供し、前記記憶デバイスによる妨害処置を実行して前記データが前記ホストにコピーされることを防止するか遅らせるステップを含む、データ保護方法。 - 前記データ出力量は、特定の時間に測定されるデータフロー値である、請求項1記載のデータ保護方法。
- 前記データ出力量は、特定の時間期間内に測定される平均データフロー値である、請求項1記載のデータ保護方法。
- 前記記憶デバイスコントローラによって、前記ホストが前記データの再生操作を実行するか、コピー操作を実行するかを前記データ出力量に従って決定する前記ステップは、
前記記憶デバイスコントローラによって、フロー速度しきい値を定義するステップと、
前記記憶デバイスコントローラによって、前記記憶デバイスのデータ出力量を前記特定の時間期間内のサンプリング持続期間の間隔で測定するステップであって、前記特定の時間期間は前記サンプリング持続時間より長いステップと、
前記記憶デバイスコントローラによって、前記特定の時間期間内に測定された全てのデータ出力量を使用することにより、平均フロー速度を計算するステップと、
前記記憶デバイスコントローラによって、前記平均フロー速度が前記フロー速度しきい値より低値であれば、前記ホストが前記データの再生操作を実行することを決定するステップと、
前記記憶デバイスコントローラによって、前記平均フロー速度が前記フロー速度しきい値より高値か等しければ、前記ホストが前記データのコピー操作を実行することを決定するステップとを含む、請求項3記載のデータ保護方法。 - 前記フロー速度しきい値を定義するステップは、
前記記憶デバイスコントローラによって、前記フロー速度しきい値を、予め決められたファイルフォーマットまたは前記記憶デバイスの伝送インタフェースのタイプに従って定義するステップを含む、請求項4記載のデータ保護方法。 - 前記記憶デバイス内の記憶ユニットの少なくとも一部は複数の記憶スペースに分割され、前記記憶スペースの各々はフロー速度基準に対応し、前記データは前記記憶スペースのうちの1つに存在し、前記フロー速度しきい値を定義するステップは、
前記記憶デバイスコントローラによって、前記データを含む前記記憶スペースに対応する前記フロー速度基準を前記フロー速度しきい値として供給するステップを含む、請求項4記載のデータ保護方法。
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TW098131096A TWI413898B (zh) | 2009-09-15 | 2009-09-15 | 資料保護方法與系統、儲存裝置及儲存裝置控制器 |
TW098131096 | 2009-09-15 |
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JP2012032273A Division JP5037734B2 (ja) | 2009-09-15 | 2012-02-17 | データの保護方法とシステム、記憶デバイス及び記憶デバイスコントローラ |
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JP2012032273A Active JP5037734B2 (ja) | 2009-09-15 | 2012-02-17 | データの保護方法とシステム、記憶デバイス及び記憶デバイスコントローラ |
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TWI439859B (zh) * | 2009-11-30 | 2014-06-01 | Silicon Motion Inc | 資料儲存裝置及其資料管理方法 |
JP6015414B2 (ja) * | 2012-12-18 | 2016-10-26 | 富士通株式会社 | プログラム、情報処理方法、及び情報処理装置 |
US9231921B2 (en) | 2013-08-20 | 2016-01-05 | Janus Technologies, Inc. | System and architecture for secure computer devices |
JP6423231B2 (ja) * | 2014-10-02 | 2018-11-14 | 株式会社メガチップス | 情報処理システム |
US10055236B2 (en) * | 2015-07-02 | 2018-08-21 | Sandisk Technologies Llc | Runtime data storage and/or retrieval |
KR20200093363A (ko) * | 2019-01-28 | 2020-08-05 | 에스케이하이닉스 주식회사 | 메모리 시스템 |
TWI750811B (zh) * | 2020-09-16 | 2021-12-21 | 英柏得科技股份有限公司 | 用於記憶體的資料保護寫入方法、用於記憶體的資料保護讀取方法以及記憶體資料保護系統 |
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- 2009-09-15 TW TW098131096A patent/TWI413898B/zh active
- 2009-11-20 US US12/623,227 patent/US8826461B2/en active Active
- 2009-12-10 JP JP2009280867A patent/JP4964940B2/ja active Active
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TW201109925A (en) | 2011-03-16 |
JP2011065622A (ja) | 2011-03-31 |
JP5037734B2 (ja) | 2012-10-03 |
JP2012141999A (ja) | 2012-07-26 |
TWI413898B (zh) | 2013-11-01 |
US20110067118A1 (en) | 2011-03-17 |
US8826461B2 (en) | 2014-09-02 |
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