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. 02, 2021
Filed:
Jul. 17, 2018
Applicant:
Silicon Motion Inc., Hsinchu County, TW;
Inventor:
Hsu-Ping Ou, Hsinchu County, TW;
Assignee:
Silicon Motion, Inc., Hsinchu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0611 (2013.01); G06F 3/064 (2013.01); G06F 3/0658 (2013.01); G06F 3/0679 (2013.01);
Abstract
A method of a flash controller to be coupled between a flash memory device and a host device is provided. The flash memory device has a plurality of blocks each having a plurality of pages, and the method comprises: receiving a trim/erase/unmap command from the host device; obtaining a storage space, which is to be erased, from the trim/erase/unmap command; comparing a space size of the storage space with a threshold to determine whether the space size is larger than the threshold; and resetting valid page counts of the plurality of blocks of the flash memory device when the space size is larger than the threshold.