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. 12, 2017
Filed:
Mar. 14, 2016
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Juan Shi, Yokohama Kanagawa, JP;
Hironori Uchikawa, Fujisawa Kanagawa, JP;
Tokumasa Hara, Kawasaki Kanagawa, JP;
Osamu Torii, Setagaya Tokyo, JP;
Toshiba Memory Corporation, Tokyo, JP;
Abstract
According to one embodiment, a memory system includes a non-volatile memory, a memory interface that performs programming and reading out with respect to the non -volatile memory, a code processor that generates a code word by encoding; and a controller that sets a threshold -voltage read level for determining whether a value of each bit in a received word read out from the non-volatile memory is '0' or '1'. A difference between the number of bits which have value equals “0” and the number of bits which have value equals “1” in the code word depends on a code rate of the encoding. The controller obtains the threshold-voltage read level based on the code rate.