Cumulative wordline dispersion and deviation for read sense determination
US11978524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2021 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Aug 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/1202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device includes a memory device including a plurality of wordlines, each wordline having a plurality of cells, and a cell statistics generator (CSG) disposed on the memory device. The CSG includes logic configured to receive a plurality of left read senses and a plurality of right read senses for the plurality of cells of a wordline, determine a plurality of first windows and a plurality of second windows, determine a left window sum and a right window sum, determine a deviation parameter and a dispersion parameter based on the left window sum and the right window sum, and determine one or more characteristics of the plurality of cells based on the deviation parameter and the dispersion parameter. The deviation parameter and the dispersion parameter are used to describe a number of errors of the left read sense and the right read sense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.