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:
Feb. 02, 2021
Filed:
Aug. 15, 2019
Toshiba Memory Corporation, Minato-ku, JP;
Naoko Kifune, Yokohama, JP;
Hironori Uchikawa, Fujisawa, JP;
Takahiro Fujiki, Kawasaki, JP;
Daiki Watanabe, Yokohama, JP;
Daisuke Fujiwara, Yokohama, JP;
Kosuke Morinaga, Yokohama, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
A memory system in an embodiment includes a nonvolatile memory and a memory controller. The memory stores a multi-dimensional error correction code including at least one symbol that is capable of being protected by at least a first and a second component code. The controller reads the error correction code from the memory, executes hard decision decoding of the first component code with respect to the read error correction code and outputs a first decoding result and index information for calculating likelihood of the first decoding result, executes, when the hard decision decoding fails, soft decision decoding of the second component code by using the first decoding result and the index information and outputs a decoding result as a hard bit, and, executes, when the soft decision decoding fails, the hard decision decoding with respect to the result of the soft decision decoding output.