Dynamic valley searching in solid state drives
US11468953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2254
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage device can reorganize a sequentially performed calibration task and delegate various steps of the task to multiple memory planes. By utilizing a characteristic that provides for similar memory device responses across multiple planes, the calibration task processed on one memory plane can be applied to another memory plane within the device. In this way, partial calibration data may be generated across a plurality of memory planes, and subsequently pooled together to generate a unified calibration data that can be utilized on each of the plurality of planes to do a full calibrated read on memory devices, thus reducing the amount of time needed to perform a calibrated read. Reduced times for calibrated reads allows for increased resolution of threshold valley scans, increased lifespan of the storage device, improved read times, and also provides for data write methods to use less memory during intermediate multi-pass programming steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.