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:
Jan. 16, 2024
Filed:
Dec. 27, 2021
International Business Machines Corporation, Armonk, NY (US);
Roman Alexander Pletka, Uster, CH;
Radu Ioan Stoica, Zurich, 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
A controller of a non-volatile memory detects errors in data read from a particular physical page of the non-volatile memory. Based on detecting the errors, the controller performs a read voltage threshold calibration for a page group including the particular physical page and a multiple other physical pages. Performing the read voltage threshold calibration includes calibrating read voltage thresholds based on only the particular physical page of the page group. After the controller performs the read voltage threshold calibration, the controller optionally validates the calibration. Validating the calibration includes determining whether bit error rates diverge within the page group and, if so, mitigating the divergence. Mitigating the divergence includes relocating data from the page group to another block of the non-volatile memory.