Memory system and control method thereof
    15.
    发明授权
    Memory system and control method thereof 有权
    存储系统及其控制方法

    公开(公告)号:US07958411B2

    公开(公告)日:2011-06-07

    申请号:US12551213

    申请日:2009-08-31

    IPC分类号: G11C29/00 G06F13/00 G06F13/28

    摘要: A memory system includes a nonvolatile memory including blocks as data erase units, a measuring unit which measures an erase time at which data in each block is erased, a block controller having a block table which associates a state value indicating one of a free state and a used state with the erase time for each block, a detector which detects blocks in which rewrite has collectively occurred within a short period, a first selector which selects a free block having an old erase time as a first block, a second selector which selects a block in use having an old erase time as a second block, and a leveling unit which moves data in the second block to the first block if the first block is included in the blocks detected by the detector.

    摘要翻译: 一种存储器系统,包括:包括作为数据擦除单元的块的非易失性存储器,测量擦除每个块中的数据的擦除时间的测量单元;具有块表的块控制器,其将指示空闲状态之一的状态值和 具有每个块的擦除时间的使用状态,检测在短时间内共同发生重写的块的检测器,选择具有旧擦除时间的空闲块作为第一块的第一选择器,选择 如果第一块被包括在由检测器检测到的块中,则将具有旧擦除时间的块用作第二块,以及调平单元,其将第二块中的数据移动到第一块。

    MEMORY SYSTEM AND CONTROL METHOD THEREOF
    17.
    发明申请
    MEMORY SYSTEM AND CONTROL METHOD THEREOF 有权
    存储系统及其控制方法

    公开(公告)号:US20100146228A1

    公开(公告)日:2010-06-10

    申请号:US12705431

    申请日:2010-02-12

    IPC分类号: G06F12/00 G11C16/04 G06F11/00

    摘要: A memory system includes a nonvolatile memory including blocks as data erase units, a measuring unit which measures an erase time at which data in each block is erased, a block controller having a block table which associates a state value indicating one of a free state and a used state with the erase time for each block, a detector which detects blocks in which rewrite has collectively occurred within a short period, a first selector which selects a free block having an old erase time as a first block, a second selector which selects a block in use having an old erase time as a second block, and a leveling unit which moves data in the second block to the first block if the first block is included in the blocks detected by the detector.

    摘要翻译: 一种存储器系统,包括:包括作为数据擦除单元的块的非易失性存储器,测量擦除每个块中的数据的擦除时间的测量单元;具有块表的块控制器,其将指示空闲状态之一的状态值和 具有每个块的擦除时间的使用状态,检测在短时间内共同发生重写的块的检测器,选择具有旧擦除时间的空闲块作为第一块的第一选择器,选择 如果第一块被包括在由检测器检测到的块中,则将具有旧擦除时间的块用作第二块;以及调平单元,其将第二块中的数据移动到第一块。

    MEMORY SYSTEM AND CONTROL METHOD THEREOF
    20.
    发明申请
    MEMORY SYSTEM AND CONTROL METHOD THEREOF 审中-公开
    存储系统及其控制方法

    公开(公告)号:US20110219177A1

    公开(公告)日:2011-09-08

    申请号:US13107623

    申请日:2011-05-13

    IPC分类号: G06F12/06

    摘要: A memory system includes a nonvolatile memory including blocks as data erase units, a measuring unit which measures an erase time at which data in each block is erased, a block controller having a block table which associates a state value indicating one of a free state and a used state with the erase time for each block, a detector which detects blocks in which rewrite has collectively occurred within a short period, a first selector which selects a free block having an old erase time as a first block, a second selector which selects a block in use having an old erase time as a second block, and a leveling unit which moves data in the second block to the first block if the first block is included in the blocks detected by the detector.

    摘要翻译: 一种存储器系统,包括:包括作为数据擦除单元的块的非易失性存储器,测量擦除每个块中的数据的擦除时间的测量单元;具有块表的块控制器,其将指示空闲状态之一的状态值和 具有每个块的擦除时间的使用状态,检测在短时间内共同发生重写的块的检测器,选择具有旧擦除时间的空闲块作为第一块的第一选择器,选择 如果第一块被包括在由检测器检测到的块中,则将具有旧擦除时间的块用作第二块;以及调平单元,其将第二块中的数据移动到第一块。