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.