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:
Feb. 28, 2023
Filed:
Apr. 02, 2019
Kioxia Corporation, Tokyo, JP;
Ryoichi Kato, Yokohama Kanagawa, JP;
Hiroyuki Yamaguchi, Kawasaki Kanagawa, JP;
KIOXIA CORPORATION, Tokyo, JP;
Abstract
A memory controller specifies, from a nonvolatile memory, a final page candidate, which is a candidate to be the physical page to which data is last written in a logical block. The memory controller executes an upward check process to determine whether the number of programmed physical pages is among a first range number of physical pages in a reverse order from the final page candidate is equal to or greater than a first reference value. The memory controller executes a downward check process determining whether the number of programmed physical pages is among a second range number of physical pages existing in the downward order from the final page candidate is equal to or less than a second reference value, and specifies the physical page to which data is last written in the logical block from results of the upward check process and the downward check process.