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. 11, 2026
Filed:
Nov. 20, 2024
Sandisk Technologies, Inc., Milpitas, CA (US);
Yuvaraj Krishnamoorthy, San Jose, CA (US);
Jayavel Pachamuthu, San Jose, CA (US);
Sandisk Technologies, Inc., Milpitas, CA (US);
Abstract
A data storage device includes a memory block failure anticipation system. The memory block failure anticipation system proactively detects defects in wordlines and/or memory blocks of the data storage device. To determine the presence of defects, the memory block failure anticipation system determines a failed bit count associated with one or more wordlines of a selected memory block and/or a failed bit count associated with the memory block. The failed bit count is compared against two thresholds—a block level data loss threshold and a wordline level data loss threshold. If the failed bit count exceeds the block level data loss threshold, the memory block is retired. If the failed bit count exceeds the wordline level data loss threshold but not the block level data loss threshold, a particular wordline of the memory block is retired and/or the memory block is retired.