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:
Jul. 04, 2023
Filed:
Feb. 16, 2021
Kioxia Corporation, Tokyo, JP;
Yasunori Arai, Kawasaki, JP;
Norio Aoyama, Machida, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a memory system includes: a memory device to store data; and a controller to control an operation for the memory device. The memory device executes a program operation by a first program voltage on memory cells belonging to a first address of the memory device; detect at least one first memory cell among the memory cells by using a first determination level and a second determination level different from the first determination level, the at least one first memory cell having a threshold voltage of a value different from a value between the first determination level and the second determination level; and generate unique information of the memory device, based on a position of the first memory cell in the first address.