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. 12, 2018
Filed:
Apr. 12, 2016
Apple Inc., Cupertino, CA (US);
Assaf Shappir, Ganey Tikva, IL;
Etai Zaltsman, Ramat Hasharon, IL;
Guy Ben-Yehuda, Hod Hasharon, IL;
Apple Inc., Cupertino, CA (US);
Abstract
A controller includes an interface and a processor. The interface is configured to communicate with a memory including multiple memory cells organized in at least two sections each including multiple sets of word lines (WLs), wherein in a first failure mode multiple WLs fail in a single section, and in a second failure mode a WL fails in multiple sections. The processor is configured to assign multiple cell-groups of the memory cells to a parity-group, such that (i) no two cell-groups in the parity-group belong to a same WL, and (ii) no two cell-groups in the parity-group belong to adjacent WLs in a same section, and, upon detecting a failure to access a cell-group in the parity-group, due to either the first or second failure modes but not both failure modes occurring simultaneously, to recover the data stored in the cell-group using one or more remaining cell-groups in the parity-group.