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:
Feb. 11, 2025
Filed:
Jul. 07, 2023
International Business Machines Corporation, Armonk, NY (US);
Nikolaos Papandreou, Thalwil, CH;
Timothy J. Fisher, Cypress, TX (US);
Roman Alexander Pletka, Uster, CH;
Charalampos Pozidis, Thalwil, CH;
Radu Ioan Stoica, Zurich, CH;
Aaron Daniel Fry, Richmond, TX (US);
Andrew D. Walls, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A technique for writing data to pages in a QLC block of a QLC NAND flash memory device, where the device comprises a plurality of SLC pages organized in SLC blocks and a plurality of QLC pages organized in QLC blocks. The technique comprises storing received data in SLC pages, dividing equally a QLC block in a predefined number of sub-blocks according to a corresponding QLC page health status of the pages of the QLC block. Upon determining that SLC pages are to be copied from SLC pages to QLC pages, copying device-internal the respective SLC pages to the sub-blocks of the QLC block using device-internal cache registers, where the copying is based on an error-count aware scheme.