Title:
不揮発性メモリおよび制御データ管理を伴う方法
Document Type and Number:
Japanese Patent JP5617079
Kind Code:
B2
Abstract:
In a nonvolatile memory with block management system that supports update blocks with non-sequential logical units, an index of the logical units in a non-sequential update block is buffered in RAM and stored periodically into the non-volatile memory. In one embodiment, the index is stored in a block dedicated for storing indices. In another embodiment, the index is stored in the update block itself. In yet another embodiment, the index is stored in the header of each logical unit. In another aspect, the logical units written after the last index update but before the next have their indexing information stored in the header of each logical unit. In this way, after a power outage, the location of recently written logical units can be determined without having to perform a scanning during initialization. In yet another aspect, a block is managed as partially sequential and partially non-sequential, directed to more than one logical subgroup.
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Inventors:
ゴロベッツ，セルゲイ アナトリエヴィッチ
ブルース，アラン ダグラス
ベネット，アラン デビッド
ブルース，アラン ダグラス
ベネット，アラン デビッド
Application Number:
JP2011171531A
Publication Date:
November 05, 2014
Filing Date:
August 05, 2011
Export Citation:
Assignee:
サンディスクテクノロジーズ インコーポレイテッドＳａｎＤｉｓｋ Ｔｅｃｈｎｏｌｏｇｉｅｓ，Ｉｎｃ．
International Classes:
G06F12/16; G06F11/20; G06F12/02; G11C7/00; G11C11/56; G11C16/10; G11C16/34; G11C29/00
Attorney, Agent or Firm:
Hisashi Inokuchi