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:
Apr. 03, 2018
Filed:
Aug. 16, 2016
Applicant:
Toshiba Memory Corporation, Minato-ku, JP;
Inventors:
Kenji Sakurada, Yamato, JP;
Masanobu Shirakawa, Chigasaki, JP;
Assignee:
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/56 (2006.01); G11C 16/08 (2006.01); G11C 29/42 (2006.01);
U.S. Cl.
CPC ...
G11C 11/5642 (2013.01); G11C 11/5628 (2013.01); G11C 16/08 (2013.01); G11C 29/42 (2013.01);
Abstract
According to one embodiment, a memory system acquires HB information and SB1 information through SB4 information on each of four pages including LOWER, MIDDLE, UPPER, and HIGHER pages from a NAND memorythat includes QLCs each being capable of retaining a 4-bit value. An ECC circuitof a memory controllerdecodes the acquired HB information and SB1 to SB4 information on the four pages.