Magnetic recording apparatus
US7057839B2 · kind B2 · utility
5Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Aug 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording apparatus has a head for recording information on a magnetic recording medium, a write current setting circuit for controlling a write current that is passed through the head, a fault detection circuit for detecting a fault in the head based on the result of comparison between head voltages appearing at both ends of the head and a reference voltage, and a reference voltage setting circuit for varying the reference voltage according to the write current. This configuration permits correct detection of faults in the head all the time irrespective of the write current or the supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.