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:
Oct. 19, 2021
Filed:
May. 27, 2020
Western Digital Technologies, Inc., San Jose, CA (US);
Nikhil Arora, Karnataka, IN;
Lovleen Arora, Karnataka, IN;
Sourabh Sankule, Karnataka, IN;
Sameer Hiware, Karnataka, IN;
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
Aspects of a storage device including a controller are provided which recovers misidentified bad blocks that fail to erase due to charge leakage from a previously programmed open block. The controller programs an open block, and attempts to erase a plurality of closed blocks following the programming of the open block. When the closed blocks fail to erase, the controller marks the closed blocks as bad blocks. The controller then determines whether a number of consecutive erase failures after programming the open block meets a threshold, in response to which the controller resets a die including the closed blocks and reattempts to erase the closed blocks. The controller then unmarks as bad blocks the closed blocks which successfully erased in response to the re-attempt.