公开(公告)号：US10108471B2

公开(公告)日：2018-10-23

申请号：US14584825

申请日：2014-12-29

Applicant: SanDisk Technologies Inc.

Inventor： Zhenlei Shen ,  Xinde Hu ,  Lei Chen ,  Yiwei Song

IPC: G06F11/00 ,  G06F11/07

Abstract: Systems and methods for controlling blocks in a memory device using a health indicator (such as the failed bit count) for the blocks are disclosed. However, the health indicator may exhibit noise, thereby resulting in an unreliable indicator of the health of the blocks in the memory device. In order to filter out the noise, a rolling average of the health indicator may be determined, and compared to the current health indicator. The comparison with the rolling average may indicate whether the current health indicator is an outlier, and thus should not be used. The health indicator may also be used to predict a future health indicator for different blocks in the memory device. Using the predicted future health indicator, the use of the blocks may be changed in order to more evenly wear the blocks.

公开(公告)号：US09626289B2

公开(公告)日：2017-04-18

申请号：US14471465

申请日：2014-08-28

Applicant: SanDisk Technologies Inc.

Inventor： Lei Chen ,  Xinde Hu ,  Zhenlei Shen ,  Yiwei Song ,  Gautam Dusija

IPC: G06F12/00 ,  G06F12/02

CPC classification number: G06F12/0246 ,  G06F12/0253 ,  G06F2212/1016 ,  G06F2212/7205 ,  G06F2212/7208 ,  G06F2212/7211

Abstract: Systems and methods for metablock relinking may be provided. A first physical block of a first metablock may be determined to have a different health than a second physical block of a second metablock based on health indicators of the first and second physical blocks. Each of the health indicators may indicate an extent to which a respective one of the first and second physical blocks may be written to and/or erased before the respective one of the first and second physical blocks becomes defective. The first physical block of the first metablock may be replaced with the second physical block of the second metablock based on a determination that the health of the first physical block of the first metablock is different than the health of the second physical block of the second metablock.

公开(公告)号：US20160062881A1

公开(公告)日：2016-03-03

申请号：US14471465

申请日：2014-08-28

Applicant: SanDisk Technologies Inc.

Inventor： Lei Chen ,  Xinde Hu ,  Zhenlei Shen ,  Yiwei Song ,  Gautam Dusija

IPC: G06F12/02

CPC classification number: G06F12/0246 ,  G06F12/0253 ,  G06F2212/1016 ,  G06F2212/7205 ,  G06F2212/7208 ,  G06F2212/7211

Abstract: Systems and methods for metablock relinking may be provided. A first physical block of a first metablock may be determined to have a different health than a second physical block of a second metablock based on health indicators of the first and second physical blocks. Each of the health indicators may indicate an extent to which a respective one of the first and second physical blocks may be written to and/or erased before the respective one of the first and second physical blocks becomes defective. The first physical block of the first metablock may be replaced with the second physical block of the second metablock based on a determination that the health of the first physical block of the first metablock is different than the health of the second physical block of the second metablock.

Abstract translation: 可以提供用于代表复位的系统和方法。 基于第一和第二物理块的健康指示符，可以确定第一元区块的第一物理块具有与第二元区块的第二物理块不同的健康。 每个健康指示符可以指示在第一和第二物理块中的相应一个变得有缺陷之前第一和第二物理块中的相应一个可被写入和/或擦除的程度。 基于第一元区块的第一物理块的健康状况不同于第二元区块的第二物理块的健康状况的确定，第一元区块的第一物理块可以被第二元区块的第二物理块替换 。

公开(公告)号：US20160188401A1

公开(公告)日：2016-06-30

申请号：US14584825

申请日：2014-12-29

Applicant: SanDisk Technologies Inc.

Inventor： Zhenlei Shen ,  Xinde Hu ,  Lei Chen ,  Yiwei Song

IPC: G06F11/07

CPC classification number: G06F11/0751 ,  G06F11/0703 ,  G06F11/073

Abstract: Systems and methods for controlling blocks in a memory device using a health indicator (such as the failed bit count) for the blocks are disclosed. However, the health indicator may exhibit noise, thereby resulting in an unreliable indicator of the health of the blocks in the memory device. In order to filter out the noise, a rolling average of the health indicator may be determined, and compared to the current health indicator. The comparison with the rolling average may indicate whether the current health indicator is an outlier, and thus should not be used. The health indicator may also be used to predict a future health indicator for different blocks in the memory device. Using the predicted future health indicator, the use of the blocks may be changed in order to more evenly wear the blocks.

Abstract translation: 公开了用于使用健康指示器（诸如故障位计数）来控制块的存储器件中的块的系统和方法。 然而，健康指示器可能表现出噪音，从而导致存储器装置中块的健康状况的不可靠指示。 为了滤除噪声，可以确定健康指标的滚动平均值，并与当前健康指标进行比较。 与滚动平均值的比较可以指示当前健康指标是否是离群值，因此不应该使用。 健康指示器还可以用于预测存储器设备中不同块的未来健康指示符。 使用预测的未来健康指示器，可以改变块的使用以便更均匀地佩戴块。