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. 12, 2023
Filed:
Nov. 24, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Michael Ionin, Rehovot, IL;
Lior Avital, Zoran, IL;
Tomer T. Eliash, Kfar Saba, IL;
Lola Grin, Netanya, IL;
Alexander Bazarsky, Holon, IL;
Itay Busnach, Raanana, IL;
Lior Bublil, Petach Tikva, IL;
Mahim Gupta, San Jose, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A data storage device includes a memory device and a controller coupled to the memory device. The controller is configured to determine that a power loss event has occurred, determine that one or more blocks are in an erased state, examine a block of the one or more blocks to determine whether the block is a SLC erased block or a TLC erased block, and place the block in a SLC pre-erase heap if the block is the SLC erased block or in a TLC pre-erase heap if the block is the TLC erased block. The controller is further configured to determine a first bit count of page0 for a SLC voltage for the block, determine a second bit count of page1 for a TLC voltage for the block, and classify the block as either a SLC erased block or a TLC erased block.