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:
Oct. 08, 2019
Filed:
Jan. 12, 2018
Applicant:
Silicon Motion, Inc., Jhubei, Hsinchu County, TW;
Inventors:
Assignee:
SILICON MOTION, INC., Jhubei, Hsinchu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/1009 (2016.01); G06F 12/02 (2006.01);
U.S. Cl.
CPC ...
G06F 12/1009 (2013.01); G06F 12/0246 (2013.01); G06F 2212/1041 (2013.01); G06F 2212/2022 (2013.01); G06F 2212/657 (2013.01); G06F 2212/7201 (2013.01); G06F 2212/7206 (2013.01);
Abstract
A data storage device includes a flash memory and a flash memory controller. The flash memory controller operates the flash memory to store data, and stores a mapping table to record the mapping information between a plurality of logical addresses and a plurality of physical addresses of the flash memory. The mapping table is divided into a plurality of groups. Some of the groups are categorized into a first type of trim group and some of the logical addresses of each of the groups of the first type of trim group are included in a trim command. The flash memory controller performs the trim on the groups of the first type of trim group.