公开(公告)号：US20190065363A1

公开(公告)日：2019-02-28

申请号：US16173390

申请日：2018-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sangkwon MOON ,  Seung-Yeon Lee ,  Heewon Lee ,  In Hwan Doh ,  NamWook KANG

IPC: G06F12/02 ,  G06F3/06

CPC classification number: G06F12/0246 ,  G06F3/0614 ,  G06F3/0652 ,  G06F3/0679 ,  G06F12/0253 ,  G06F2212/1016 ,  G06F2212/1032 ,  G06F2212/7205 ,  G06F2212/7209

Abstract: A method of operating a data storage device includes programming non-fully programmed memory blocks at a point in time when a reference time elapses from a point in time when each of the memory blocks is physically erased, acquiring a first interval and a second interval, calculating a disturb index based on the first interval and the second interval, selecting a victim block for garbage collection based on the disturb index, and copying valid page data of the victim block into a free block. The first interval is defined by a point in time when each of the memory blocks is physically erased and a point in time when each of the memory blocks is fully programmed. The second interval is an interval during which a fully programmed state is maintained after a point in time when each of the memory blocks is fully programmed.