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. 05, 2018
Filed:
Jul. 26, 2016
Apple Inc., Cupertino, CA (US);
Alexander Paley, Cupertino, CA (US);
Andrew W. Vogan, Gilroy, CA (US);
Eran Sandel, Herzeliya Pituah, IL;
Lior Mouler, Herzeliya Pituah, IL;
Liran Erez, Cupertino, CA (US);
Matthew J. Byom, San Jose, CA (US);
Muhammad N. Ashraf, Cupertino, CA (US);
Roman Guy, Herzeliya Pituah, IL;
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods for handling sudden power failures in non-volatile memory devices such as solid state drives are provided by having the non-volatile memory device boot up in a low power write mode, which limits substantially all programming operations to a single level cell (SLC) mode, as opposed to a normal mode in which the programming operations can be performed in a multi-level cell (MLC) mode. Thus, if the system experiences a sudden power failure when it is being powered solely by AC derived power and the battery is below a level sufficient for powering the device while it is programming in the SLC mode, data integrity will be preserved because the programming operation was being performed in SLC mode. The non-volatile memory device may be permitted to exit out the low power write mode into the normal mode when the charge level of the battery is sufficient for powering the system.