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:
Sep. 15, 2020
Filed:
Mar. 01, 2019
Toshiba Memory Corporation, Minato-ku, JP;
Daiki Watanabe, Yokohama, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
According to one embodiment, a memory system includes a nonvolatile memory and a memory controller. The memory controller calculates a reliability metric on the basis of at least a soft-decision input value calculated on the basis of read information that is read from the nonvolatile memory, and a decoded word, stores reference information that is a history of a plurality of reliability metrics or statistical information obtained from the history, calculates reliability from the reliability metric by using correspondence information, calculates decoding information on the basis of the decoded word and the reliability, and updates the correspondence information on the basis of the reference information.