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. 06, 2025
Filed:
Sep. 08, 2021
Kioxia Corporation, Tokyo, JP;
Takehiko Amaki, Yokohama, JP;
Shunichi Igahara, Fujisawa, JP;
Toshikatsu Hida, Yokohama, JP;
Yoshihisa Kojima, Kawasaki, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a storage device comprises a nonvolatile memory, and a controller configured to perform a first data write operation in a first mode, and to perform a second data write operation in a second mode. Data of a first number of bits is written per memory cell in the first mode. Data of a second number of bits is written per memory cell in the second mode. The second number is larger than the first number. The controller reserves one or more free blocks as write destination block candidates of the first data write operation, perform the first data write operation for one of the write destination block candidates, and perform a garbage collection.