The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2020
Filed:
May. 08, 2018
Applicant:
Toshiba Memory Corporation, Tokyo, JP;
Inventors:
Assignee:
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/02 (2006.01); G06F 3/06 (2006.01); G11C 11/56 (2006.01); G06F 12/0804 (2016.01); G06F 12/0868 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0246 (2013.01); G06F 3/0605 (2013.01); G06F 3/0611 (2013.01); G06F 3/0652 (2013.01); G06F 3/0656 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); G06F 3/0688 (2013.01); G11C 11/5628 (2013.01); G06F 12/0804 (2013.01); G06F 12/0868 (2013.01); G06F 2212/1024 (2013.01); G06F 2212/214 (2013.01); G06F 2212/7201 (2013.01); G06F 2212/7203 (2013.01); G06F 2212/7205 (2013.01); G11C 2211/5641 (2013.01); Y02D 10/13 (2018.01);
Abstract
According to one embodiment, a memory system writes data to a first block, and executes a garbage collection when the number of free blocks is not greater than a first threshold value. The memory system calculates a first number which is a ratio of the number of copy destination blocks needed for the garbage collection to the number of blocks to which data designated by a write command is written. The memory system determines whether the first number is greater than a second threshold value when a first command is received from the host, and performs fill-up processing for the first block when the first number is not greater than the second threshold value.