Head instability detection method and apparatus
US6249392A · kind A · utility
13Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1998 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | May 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus detects pulse asymmetries in a read signal of a data storage device. The read signal is rectified through multiplication with a rectification signal to produce a product signal. The product signal is integrated to produce integrands indicative of pulse asymmetry. In some embodiments of the present invention, the integrands are compared against a baseline value to determine a performance characteristic of a read head in the data storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.