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:
May. 07, 2024
Filed:
Sep. 30, 2021
Applicant:
Kioxia Corporation, Tokyo, JP;
Inventors:
Saswati Das, Milpitas, CA (US);
Manish Kadam, Cupertino, CA (US);
Assignee:
KIOXIA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 12/02 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0659 (2013.01); G06F 3/0619 (2013.01); G06F 3/0679 (2013.01); G06F 12/0238 (2013.01); G06F 12/0253 (2013.01);
Abstract
A method performed by a controller of a solid-state drive (SSD) comprising splitting a logical to physical mapping table in a non-volatile semiconductor memory device of the SSD into a plurality of regions, each of the regions associated with a plurality of logical cluster addresses (LCAs), determining if the mapping table for each region contains an entry with a valid address, setting a validity status in a validity bit for a region of the plurality of regions if the mapping table for the region contains any mapped addresses, and storing the validity bit for each region in a validity bitmap table (VBT).