JP2001147864A5 - - Google Patents
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- JP2001147864A5 JP2001147864A5 JP1999329986A JP32998699A JP2001147864A5 JP 2001147864 A5 JP2001147864 A5 JP 2001147864A5 JP 1999329986 A JP1999329986 A JP 1999329986A JP 32998699 A JP32998699 A JP 32998699A JP 2001147864 A5 JP2001147864 A5 JP 2001147864A5
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Claims (7)
前記パケットは、当該パケットの管理に関する管理データを格納する管理部と、記憶すべきデータを格納するデータ部とを有し、
前記管理部には、前記管理データとして、前記パケットの異なる２つの状態を示す状態情報が格納可能となっており、
データを記憶するときは、記憶すべきデータを格納するパケットを前記記憶領域に生成し、データ書込開始時に前記パケットの状態情報をデータの新規書込中であることを示す第１の状態に設定し、前記パケットのデータ部に前記記憶すべきデータを書き込み、データ書込完了時に前記パケットの状態情報をデータの新規書込が完了したことを示す第２の状態に設定し、
前記状態情報が前記第２の状態であるパケットを有効なパケットであると判定し、前記状態情報が前記第１の状態であるパケットを無効なパケットであると判定するようになっていることを特徴とするフラッシュメモリのデータ管理装置。An apparatus for storing data in packet units in a storage area of a flash memory,
The packet has a management unit that stores management data related to management of the packet, and a data unit that stores data to be stored.
In the management unit, status information indicating two different statuses of the packet can be stored as the management data,
When storing data, a packet for storing data to be stored is generated in the storage area, and at the start of data writing, the state information of the packet is set to a first state indicating that new data is being written. Setting, writing the data to be stored in the data portion of the packet, and setting the state information of the packet to a second state indicating that the new writing of data is completed when the data writing is completed;
The state information determines that the packet in the second state is a valid packet and the state information determines that the packet in the first state is an invalid packet. Characteristic flash memory data management device.
前記状態情報は、前記パケットのさらに異なる２つの状態を示すようになっており、
前記パケットのデータを更新するときは、更新すべきデータを格納する新たなパケットを前記記憶領域に生成し、データ書込開始時に前記パケットの状態情報をデータの更新中であることを示す第３の状態に且つ前記新たなパケットの状態情報を前記第１の状態に設定し、前記新たなパケットのデータ部に前記更新すべきデータを書き込み、データ書込完了時に前記新たなパケットの状態情報を前記第２の状態に且つ前記パケットの状態情報をデータの更新が完了したことを示す第４の状態に設定し、
前記状態情報が前記第２の状態又は前記第３の状態であるパケットを有効なパケットであると判定し、前記状態情報が前記第１の状態又は前記第４の状態であるパケットを無効なパケットであると判定するようになっていることを特徴とするフラッシュメモリのデータ管理装置。In claim 1,
The state information indicates two more different states of the packet,
When updating the data of the packet, a new packet storing the data to be updated is generated in the storage area, and at the start of data writing, the status information of the packet indicates that the data is being updated. And the state information of the new packet is set to the first state, the data to be updated is written in the data portion of the new packet, and the state information of the new packet is written when data writing is completed. Setting the state information of the packet to the second state and a fourth state indicating that the data update is completed;
The state information determines that the packet in the second state or the third state is a valid packet, and the state information indicates that the packet in the first state or the fourth state is an invalid packet. A data management device for a flash memory, wherein the data management device is configured to determine that
前記パケットは、可変長であり、
前記管理部には、前記管理データとして、当該パケットのデータ長を示すデータ長情報が格納可能となっており、
前記データ長情報に基づいて、前記パケットの格納位置を特定するようになっていることを特徴とするフラッシュメモリのデータ管理装置。In any one of claims 1 and 2,
The packet is of variable length;
The management unit can store, as the management data, data length information indicating a data length of the packet,
A data management device for a flash memory, wherein a storage location of the packet is specified based on the data length information.
前記記憶領域は、当該記憶領域の管理に関する領域管理データを格納する領域管理部と、パケットを格納するパケット部とを有し、
前記領域管理部には、前記領域管理データとして、前記記憶領域の異なる４つの状態を示す領域状態情報が格納可能となっており、
前記記憶領域を更新するときは、データ書込開始時に前記記憶領域の領域状態情報をデータの更新中であることを示す第３の状態に且つ前記別の記憶領域の領域状態情報をデータの新規書込中であることを示す第１の状態に設定し、前記記憶領域の有効なパケットのデータを前記別の記憶領域のパケット部に書き込み、データ書込完了時に前記別の記憶領域の領域状態情報をデータの新規書込が完了したことを示す第２の状態に且つ前記記憶領域の領域状態情報をデータの更新が完了したことを示す第４の状態に設定し、
前記領域状態情報が前記第２の状態又は前記第３の状態である記憶領域を有効な記憶領域であると判定し、前記領域状態情報が前記第１の状態又は前記第４の状態である記憶領域を無効な記憶領域であると判定するようになっていることを特徴とするフラッシュメモリのデータ管理装置。An apparatus for storing data in a packet unit in the storage area by the data management device for a flash memory according to any one of claims 1 to 3, and updating the storage area using another storage area different from the storage area. And
The storage area has an area management unit that stores area management data related to management of the storage area, and a packet unit that stores packets.
In the area management unit, area state information indicating four different states of the storage area can be stored as the area management data,
When updating the storage area, the area state information of the storage area is set to a third state indicating that data is being updated at the start of data writing, and the area state information of the another storage area is set to the new state of the data. Setting a first state indicating that writing is in progress, writing valid packet data of the storage area to a packet portion of the another storage area, and setting an area state of the another storage area when data writing is completed Setting information to a second state indicating that new writing of data is completed, and setting area state information of the storage area to a fourth state indicating that updating of data is completed,
A storage area in which the area state information is the second state or the third state is determined to be a valid storage area, and the storage state in which the area state information is the first state or the fourth state is determined. A data management apparatus for a flash memory, wherein an area is determined to be an invalid storage area.
前記領域状態情報が前記第１の状態又は前記第４の状態である記憶領域を前記別の記憶領域として用いるようになっていることを特徴とするフラッシュメモリのデータ管理装置。In claim 4,
A data management device for a flash memory, wherein a storage area in which the area state information is the first state or the fourth state is used as the another storage area.
前記記憶領域の領域状態情報及び前記別の記憶領域の領域状態情報の状態に応じて前記記憶領域又は前記別の記憶領域に対する処理を割り当てた処理定義テーブルを参照して、前記記憶領域又は前記別の記憶領域に対する処理を実行するようになっていることを特徴とするフラッシュメモリのデータ管理装置。In any one of claims 4 and 5,
The storage area or the other storage area is referred to by referring to a processing definition table to which processing for the storage area or the another storage area is assigned according to the state of the area state information of the storage area and the state of the area state information of the another storage area. A data management device for a flash memory, wherein the data management device executes a process for a storage area of the flash memory.
前記記憶領域は、フラッシュメモリのデータ初期化単位からなることを特徴とするフラッシュメモリのデータ管理装置。In any one of claims 1 to 6,
The data management device for a flash memory, wherein the storage area includes a data initialization unit of the flash memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32998699A JP3858538B2 (en) | 1999-11-19 | 1999-11-19 | Flash memory data management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32998699A JP3858538B2 (en) | 1999-11-19 | 1999-11-19 | Flash memory data management device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001147864A JP2001147864A (en) | 2001-05-29 |
| JP2001147864A5 true JP2001147864A5 (en) | 2004-12-16 |
| JP3858538B2 JP3858538B2 (en) | 2006-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32998699A Expired - Fee Related JP3858538B2 (en) | 1999-11-19 | 1999-11-19 | Flash memory data management device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3858538B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100877030B1 (en) | 2001-07-25 | 2009-01-07 | 소니 가부시끼 가이샤 | Non-volatile memory and non-volatile memory data rewriting method |
| JP4323745B2 (en) | 2002-01-15 | 2009-09-02 | 三洋電機株式会社 | Storage device |
| JP3971941B2 (en) | 2002-03-05 | 2007-09-05 | 三洋電機株式会社 | Data storage |
| JP4387087B2 (en) | 2002-07-25 | 2009-12-16 | 三洋電機株式会社 | Data storage device |
| JP2006268817A (en) * | 2005-02-28 | 2006-10-05 | Sony Corp | Storage method, its device, and program |
| JP2008077669A (en) * | 2007-10-09 | 2008-04-03 | Mitsubishi Electric Corp | Recording method |
| KR101437397B1 (en) | 2007-10-31 | 2014-09-05 | 삼성전자주식회사 | Data management method and mapping table update method in nonvolatile memory device |
-
1999
- 1999-11-19 JP JP32998699A patent/JP3858538B2/en not_active Expired - Fee Related
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