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. 25, 2022
Filed:
Jun. 23, 2021
Western Digital Technologies, Inc., San Jose, CA (US);
Daniel Linnen, Naperville, IL (US);
Kirubakaran Periyannan, Santa Clara, CA (US);
Khanfer Kukkady, San Jose, CA (US);
Preston Thomson, Boise, ID (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A non-volatile storage system includes a control circuit connected to non-volatile memory cells provides for progressive writing of data. That is, existing data is overwritten by new data without performing a traditional erase operation that changes the threshold voltage of the memory cells back to the traditional or original erase state. In one example, new data is written on top of old data using shifted threshold voltage distributions. Some embodiments include writing MLC data over SLC data, using intermediate erase threshold voltage distributions and/or automatically detecting which threshold voltage distributions are currently being used to store data.