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    • 5. 发明申请
    • METHOD OF WEAR LEVELING FOR NON-VOLATILE MEMORY
    • 非易失性存储器的磨损方法
    • US20090259819A1
    • 2009-10-15
    • US12100136
    • 2008-04-09
    • YEN MING CHENSHIH CHIEH TAIYUNG LI JICHIH NAN YENFUJA SHONE
    • YEN MING CHENSHIH CHIEH TAIYUNG LI JICHIH NAN YENFUJA SHONE
    • G06F12/02G06F13/00G06F12/00
    • G06F13/4239
    • A method of wear leveling for a non-volatile memory is performed as follows. First, the non-volatile memory is divided into a plurality of zones including at least a first zone and a second zone. The first zone is written and/or erased in which one or more logical blocks have higher writing hit rate, and therefore the corresponding physical blocks in the first zone will be written more often. The next step is to find one or more free physical blocks in second zone. The physical blocks of the first zone are replaced by the physical blocks of the second zone if the number of write and/or erase to the first zone exceeds a threshold number. The replacement of physical blocks in the first zone by the physical blocks in the second zone may include the steps of copying data from the physical blocks in the first zone to the physical block in the second zone, and changing the pointer of logical blocks to point to the physical blocks in the second zone.
    • 如下执行用于非易失性存储器的磨损均衡的方法。 首先,非易失性存储器被分成包括至少第一区域和第二区域的多个区域。 写入和/或擦除第一区域,其中一个或多个逻辑块具有较高的写入命中率,因此第一区域中相应的物理块将被更频繁地写入。 下一步是在第二个区域中找到一个或多个空闲的物理块。 如果第一区的写入次数和/或擦除次数超过阈值,则第一区的物理块被第二区的物理块替换。 通过第二区域中的物理块来替换第一区域中的物理块可以包括以下步骤:将数据从第一区域中的物理块复制到第二区域中的物理块,并将逻辑块的指针改变为点 到第二区的物理块。