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:
Aug. 26, 2025
Filed:
Feb. 28, 2024
Sandisk Technologies, Inc., Milpitas, CA (US);
Bishwajit Dutta, Bangalore, IN;
Sharath Shivakumar, Bangalore, IN;
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
A multi-meta-die data storage device disclosed herein routes host writes in such a way to prevent the need for inter-meta-die active wear leveling. In making the meta-die selection, a controller of the data storage device can consider both the average number of program-erase cycles (PEC) of the meta-die, as well as a parameter that indicates the effort required to relocate data from the meta-die to another meta-die. The controller can use this information to normalize PEC among the meta-dies and select the meta-die with the lowest final relocation effort for opening a new block for host writes. This can minimize relocations from active wear leveling.