Introducing a noise signal into a read-back signal when data is written to a removable data storage medium
US7372651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | May 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one exemplary embodiment, a noise signal is introduced into a read-back signal when data is written to a removable data storage medium. While writing the data to the removable data storage medium, a portion of the data written to the removable data storage medium is read from the removable data storage medium. An error rate is determined based on the portion of the data read from the removable data storage medium. A read-back signal is generated corresponding to the portion of the data read from the removable data storage medium, which is used to detect if an error occurred in writing the portion of the data to the removable data storage medium. A noise signal is added to the read-back signal. The noise signal is adjusted based on the determined error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.