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:
Jun. 04, 2019
Filed:
Jul. 14, 2015
Sony Corporation, Tokyo, JP;
Yasushi Fujinami, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The write reliability of a nonvolatile memory is improved by performing accurate verification of write data. In a memory controller of an information processing system, a determination unit determines whether a state of a memory cell after writing data is stable in a nonvolatile memory including the memory cell having an unstable state period after writing data. A verification unit performs verification by comparing read data which is read from the memory cell where the data is written on the basis of a result of the determination, with write data involved in the writing. A write control unit performs writing of the data and rewriting of the write data based on a result of the verification.