公开(公告)号：US09996304B2

公开(公告)日：2018-06-12

申请号：US15059240

申请日：2016-03-02

Applicant: Silicon Motion, Inc.

Inventor： Kuan-Lin Chen ,  Wu-Chi Kuo

IPC: G06F3/06 ,  G06F12/08

CPC classification number: G06F3/0688 ,  G06F3/0616 ,  G06F3/064 ,  G06F12/08

Abstract: The present invention provides a data storage device including a flash memory, a plurality of counting control arrays and a controller. The flash memory includes a plurality of chips, each chip has a plurality of pages arranged to be assembled into a super block according to a predetermined order, and each of the super blocks includes the pages of the different chips. The controller keeps the value of a first field of a first counting control array corresponding to a first chip required to be read and writes a second value into the other fields except for the first field of the first counting control array when the first field is a first value, and writes the first value into the first field and keeps the values of the other fields of the first counting control array when the first field is the second value.

公开(公告)号：US20180275887A1

公开(公告)日：2018-09-27

申请号：US15802130

申请日：2017-11-02

Applicant: Silicon Motion, Inc.

Inventor： Yi-Chien Yang ,  Wu-Chi Kuo ,  Yu-Wei Fan

IPC: G06F3/06 ,  G06F12/1009

CPC classification number: G06F3/0608 ,  G06F3/064 ,  G06F3/0652 ,  G06F3/0673 ,  G06F12/0246 ,  G06F12/1009 ,  G06F2212/1044 ,  G06F2212/7201 ,  G06F2212/7205

Abstract: A data storage device with high reliability. When rebuilding a mapping table, a validity table bitMap within a first block is taken into consideration to determine which is a newer version: the first data within the first block or the second data within a second block. The first block was originally used as a destination block for garbage collection. The second block was originally used as an active block for reception of write data from a host. The validity table bitMap shows the data status (valid or invalid) of the storage units of the first block. The first data and the second data relate to the same logical address.