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. 13, 2025
Filed:
Nov. 09, 2022
Kioxia Corporation, Tokyo, JP;
Marie Takada, Yokohama Kanagawa, JP;
Masanobu Shirakawa, Chigasaki Kanagawa, JP;
Hideki Yamada, Yokohama Kanagawa, JP;
Ryo Yamaki, Yokohama Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A memory system includes a nonvolatile memory including memory cells each configured to store first and second bits, and a memory controller. The memory controller is configured to: read first data by using a first voltage to a first read process that reads data corresponding to the first bit from the memory cells; read second data by using a second voltage to a second read process that reads data corresponding to the second bit from the memory cells; in a case where an error correction process of the first data is successful, determine a third voltage, based on the first data and third data that is obtained by error-correcting the first data; and update a first read voltage that is used to the first read process, from the first voltage to the third voltage.