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. 22, 2020
Filed:
Aug. 27, 2018
Toshiba Memory Corporation, Tokyo, JP;
Hiroki Matsudaira, Funabashi Chiba, JP;
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Abstract
A memory system comprises a first memory including physical blocks, a second memory storing a first correspondence table in which a logical cluster address corresponding to an address assigned to data received from a host is correlated with a logical group number corresponding to a block group and a logical cluster number corresponding to a location within the block group, and a second correspondence table in which first physical block numbers corresponding to first physical blocks are correlated with a first logical group number and second physical block numbers corresponding to second physical blocks are correlated with a second logical group number, and a controller circuit that updates the first correspondence table when new data is written to the first physical blocks, and the second correspondence table, without changing the first corresponding table, when data is moved from the first to the second physical blocks.