公开(公告)号：WO2015070082A1

公开(公告)日：2015-05-14

申请号：PCT/US2014/064661

申请日：2014-11-07

Applicant: QUALCOMM INCORPORATED

Inventor： KIMBERLY, William Edward ,  BABU, Benish ,  PATRICK, Richard ,  ORTUNO, Efrain

IPC: G11C16/22 ,  G11C16/34 ,  G06F3/06

CPC classification number: G06F3/0679 ,  G06F3/0616 ,  G06F3/064 ,  G06F12/0246 ,  G11C16/105 ,  G11C16/22 ,  G11C16/3418

Abstract: Methods, systems and devices provide for refreshing a data image stored on a NAND memory device. Aspects include sequentially copying each of a series of static data partitions into a scrub portion that does not store data image partitions identified in the partition table. The sequential copying begins with a last static data partition and proceeds sequentially to a first static data partition when the scrub portion occupies higher order addresses than the last address of the last static data partition. Alternatively, the sequential copying begins with the first static data partition and proceeds sequentially to the last static data partition when the scrub portion occupies addresses that are lower than the first address of the first static data partition. The partition table may be updated as each static data partition is stored to the scrub portion. Such operations enable fail-safe scrubbing and refreshing of data in a NAND device.

Abstract translation: 方法，系统和设备提供用于刷新存储在NAND存储器设备上的数据图像。 方面包括将一系列静态数据分区中的每一个依次复制到不存储在分区表中标识的数据图像分区的擦除部分。 顺序复制以最后一个静态数据分区开始，并且当擦除部分占据比最后一个静态数据分区的最后一个地址高的地址时，顺序进行到第一个静态数据分区。 或者，顺序复制开始于第一静态数据分区，并且当擦除部分占据低于第一静态数据分区的第一地址的地址时，顺序地继续到最后的静态数据分区。 当每个静态数据分区被存储到擦除部分时，分区表可以被更新。 这样的操作使得能够在NAND设备中进行故障安全擦除和刷新数据。