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. 04, 2018
Filed:
Aug. 07, 2017
Marvell World Trade Ltd., St. Michael, BB;
Pantas Sutardja, Los Gatos, CA (US);
Marvell World Trade Ltd., St. Michael, BB;
Abstract
A solid-state disk including first and second memories and a wear leveling module. The second memory has a lower write cycle lifetime than the first memory. The wear leveling module: receives logical addresses (LAs) from a host; determines write frequencies respectively for the LAs, where the write frequencies indicate how frequently data is written to the LAs; determines write frequency rankings (WFRs) based on respectively the write frequencies, where each of the WFRs is based on a weighted time-decay average of write counts or an average of elapsed times of write cycles for the corresponding one of the LAs; and for each LA mapped to the first memory, if a corresponding one of the WFRs is greater than a lowest one of the WFRs of (i) the first memory, or (ii) the first and second memories, remaps the LA with the lowest WFR to a different physical address.