Method and system for monitoring data channel to enable use of dynamically adjustable LDPC coding parameters in a data storage system
US9214963B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2012 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | May 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6516
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data storage system configured to adaptively code data and related methods are disclosed. In some embodiments of the present invention, a data storage system includes a controller and a non-volatile memory array having a plurality of memory pages. The controller includes a channel monitor that determines the quality of read signals from the pages when they are read, and provides adjustment metrics to aid in the selection of a code rate, such as a code rate for a low-density parity-check (LDPC) code. In this way, the code rate used for data encoding can be dynamically adjusted to accommodate degradation of the non-volatile memory array over its useable life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.