Identifying unusable memory blocks based on zeros-ones imbalance in memory readouts
US12334176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jan 19, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage apparatus includes an interface and storage circuitry. The interface is configured to communicate with a plurality of memory cells organized in multiple memory blocks. The storage circuitry is configured to produce a given readout by reading data from a group of the memory cells in a given memory block, using a given read voltage, to calculate a given zeros-ones imbalance level of the given readout, based on the given zeros-ones imbalance level, to check whether the given readout level is zeros-ones balanced or unbalanced in accordance with a balance criterion, and upon detecting that the given readout is zeros-ones unbalanced, mark the given memory block as suspected of being unusable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.