JP2013520760A - 隣接状態情報に基づく温度補償がなされる不揮発性記憶装置 - Google Patents
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Abstract
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Claims (18)
- 不揮発性記憶装置を動作させる方法であって、
不揮発性記憶素子にデータをプログラムすること、及び、
前記プログラミングの後に、前記不揮発性記憶素子から前記データを読み出すことと、を備え、
前記データを読み出すことは、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することを含む、方法。 - 前記データを読み出すことは、温度差が閾値よりも大きいと判断することを含み、
前記温度差は、現在の温度と、前記データをプログラムする時点の温度と、の差であり、
温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、少なくとも1つの隣接不揮発性記憶素子に関する状態情報と、前記温度差が前記閾値よりも大きいと判断することに応じた前記温度差と、に基づいて、補償を提供することを含む、
請求項1に記載の方法。 - 温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、
温度に基づいて初期補償値を決定すること、及び、
少なくとも1つの隣接不揮発性記憶素子に関する前記状態情報に基づいて前記初期補償値を調整すること、
を含む、請求項1または2に記載の方法。 - 温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、温度と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて補償値を決定することを含む、
請求項1または2に記載の方法。 - 前記データを読み出すことは、
前記不揮発性記憶素子から情報を検知すること、
前記検知の後に、前記温度補償を適用すること、及び、
前記検知及び前記適用に基づいて前記データを決定すること、
を含む、請求項1から4のいずれか一項に記載の方法。 - データを読み出すことは、
前記温度補償を適用すること、及び、
前記温度補償の前記適用の後に、前記温度補償の前記適用に基づいて前記不揮発性記憶素子から情報を検知すること、
を含む、請求項1から4のいずれか一項に記載の方法。 - 温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいてエラー訂正符号復号化プロセスのためのLRRテーブルを調整することを含む、請求項1から6のいずれか一項に記載の方法。
- 温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、前記データの前記読み出しのための読み出し比較レベルを調整することを含み、
前記読み出し比較レベルは、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて調整される、
請求項1から6のいずれか一項に記載の方法。 - 温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することは、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいてエラー訂正符号復号化プロセスを調整することを含む、請求項1から6のいずれか一項に記載の方法。
- 読み出すことは、
現在の温度情報を決定すること、
前記データのプログラミングからの温度情報にアクセスすること、
前記現在の温度情報と、前記データのプログラミングからの前記温度情報と、の温度差を決定すること、
1以上の目標不揮発性記憶素子に対して、1以上の隣接不揮発性記憶素子に関する状態情報を決定すること、
前記温度差が閾値よりも大きいと判断すること、
前記温度差と、前記温度差が前記閾値よりも大きいと判断することに応じた適切な隣接不揮発性記憶素子に関する状態情報と、に基づいて、1以上の目標不揮発性記憶素子のための温度補償を適用すること、
目標不揮発性記憶素子から情報を検知すること、及び、
前記検知と前記温度補償とに基づいてデータを報告すること、
を含む、請求項1に記載の方法。 - 読み出すことは、
現在の温度情報を決定すること、
前記データのプログラミングからの温度情報にアクセスすること、
前記現在の温度情報と、前記データのプログラミングからの前記温度情報と、の温度差を決定すること、
前記受け取られた現在の温度情報に基づいて読み出しパラメータを調整すること、
前記読み出し動作パラメータを用いて前記不揮発性記憶素子から初期情報を検知すること、
前記温度差と、前記不揮発性記憶素子に関する1以上の隣接不揮発性記憶素子の状態を表す情報と、に基づく温度補償を用いて、前記初期情報から前記不揮発性記憶素子に記憶されたデータを特定すること、及び、
前記特定されたデータを報告すること、
を含む、請求項1に記載の方法。 - 不揮発性記憶素子と、
前記不揮発性記憶素子と通信する1以上の管理回路と、を備え、
前記1以上の管理回路は、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供することによって、前記不揮発性記憶素子からデータを読み出す、不揮発性記憶システム。 - 前記1以上の管理回路は、
温度差が閾値よりも大きいと判断し、
前記温度差が前記閾値よりも大きいと判断することに応じて、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供し、
前記温度差は、前記データのプログラミングの際の温度と、前記データを読み出す際の温度と、の差であり、
前記温度情報は、前記温度差である、
請求項12に記載の不揮発性記憶システム。 - 前記1以上の管理回路は、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいてエラー訂正符号復号化プロセスを調整することによって、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供する、
請求項12または13に記載の不揮発性記憶システム。 - 前記1以上の管理回路は、前記データを読み出すための読み出し比較レベルを調整することによって、温度情報と少なくとも1つの隣接不揮発性記憶素子に関する状態情報とに基づいて温度補償を提供する、
請求項12または13に記載の不揮発性記憶システム。 - 前記1以上の管理回路は、
現在の温度情報を決定し、
前記データのプログラミングからの温度情報にアクセスし、
前記現在の温度情報と、前記データのプログラミングからの温度情報と、の温度差を決定し、
1以上の隣接不揮発性記憶素子に関する状態情報を決定し、
前記温度差と適切な隣接不揮発性記憶素子に関する前記状態情報とに基づいて1以上の目標不揮発性記憶素子のための温度補償を決定して適用し、
目標不揮発性記憶素子から情報を検知し、
前記検知と前記温度補償とに基づいてデータを報告することによって、
前記不揮発性記憶素子からデータを読み出す、
請求項12に記載の不揮発性記憶システム。 - 前記1以上の管理回路は、
現在の温度情報を決定し、
データのプログラミングからの温度情報にアクセスし、
前記現在の温度情報と、データのプログラミングからの温度情報と、の温度差を決定し、
前記受け取られた現在の温度情報に基づいて1以上の動作パラメータを調整し、
前記1以上の動作パラメータを用いて、前記不揮発性記憶素子から初期情報を検知し、
前記温度差と、前記不揮発性記憶素子に対する1以上の隣接不揮発性記憶素子の状態を表す情報と、に基づく温度補償を用いて、前記初期情報から前記不揮発性記憶素子に記憶されたデータを特定し、
前記特定されたデータを報告することによって、
前記不揮発性記憶素子からデータを読み出す、
請求項12に記載の不揮発性記憶システム。 - 前記1以上の管理回路は、
各データ状態のための複数の比較値において読み出し動作を実行し、
前記読み出し動作、温度情報、及び、隣接状態情報に基づく特定のデータ値を表すデータの各ビットのための確率を決定することによって、
前記不揮発性記憶素子からデータを読み出す、
請求項12に記載の不揮発性記憶システム。
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US12/708,699 US8213255B2 (en) | 2010-02-19 | 2010-02-19 | Non-volatile storage with temperature compensation based on neighbor state information |
PCT/US2011/024287 WO2011103013A1 (en) | 2010-02-19 | 2011-02-10 | Non-volatile storage with temperature compensation based on neighbor state information |
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WO2011103013A1 (en) | 2011-08-25 |
US9036438B2 (en) | 2015-05-19 |
CN102893337A (zh) | 2013-01-23 |
TW201203273A (en) | 2012-01-16 |
US20120236670A1 (en) | 2012-09-20 |
US9224457B2 (en) | 2015-12-29 |
CN102893337B (zh) | 2015-09-30 |
US20150043281A1 (en) | 2015-02-12 |
US20110205823A1 (en) | 2011-08-25 |
KR101882522B1 (ko) | 2018-07-26 |
US8213255B2 (en) | 2012-07-03 |
EP2537157B1 (en) | 2016-08-31 |
JP5693615B2 (ja) | 2015-04-01 |
KR20130045243A (ko) | 2013-05-03 |
EP2537157A1 (en) | 2012-12-26 |
USRE45954E1 (en) | 2016-03-29 |
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