Method and system for detection recording media defacts
US6310739A · kind A · utility
21Cited by
6References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A discrete-time filtering method for identifying defects in a magnetic medium, comprising the steps of: reading data signals from at least a portion of the medium; sampling the data signals to generate discrete time sample data; processing the sample data in a discrete time filter to detect deviation of the signal corresponding to media defects; and comparing the deviation of the signal to one or more threshold values to identify corresponding defect types on the recording medium. The filter can be configured to have an impulse response substantially matched to deviation of the signal corresponding to media defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.