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. 10, 2024
Filed:
Aug. 23, 2022
International Business Machines Corporation, Armonk, NY (US);
Radu Ioan Stoica, Zurich, CH;
Roman Alexander Pletka, Uster, CH;
Nikolas Ioannou, Zurich, CH;
Nikolaos Papandreou, Thalwil, CH;
Charalampos Pozidis, Thalwil, CH;
Timothy J. Fisher, Cypress, TX (US);
Aaron Daniel Fry, Richmond, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Threshold voltage shift values, or TVS values, are calibrated for a non-volatile memory unit including strings of memory cells organized into memory pages, the memory pages being organized into blocks. The calibration involves a read operation to read a given page of the memory pages, based on given one or more TVS values for the given page. In response to a read failure of the read operation, the calibration determines one or more corrected TVS values based on one or more reference TVS values of one or more reference pages of the memory pages. The calibration subsequently performs a read operation to read the given page based on the one or more corrected TVS values. This calibration exploits TVS values of reference pages to determine corrected TVS values of the failing page, instead of finding appropriate TVS values by repeatedly re-reading the failing page.