Method and apparatus for detecting and correcting errors in stored information
US7587656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2003 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Dec 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device can receive information to be stored in a first part of a first portion of a block, read previously-stored information from a second part, and store the specified information in the first part and simulate storage of the previously-stored information in the second part while generating error detection information which is then stored in a second portion of the block. The device can read a specified subset of sections in a block, use part of each section to detect and/or correct an error in another part thereof, while avoiding reading the error detection information unless a section in the subset has an uncorrected error. Detected errors are corrected with successive correction stages, while maintaining for each section being processed in the stages a count of the number of other sections which are thereafter read in succession without error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.