Method and apparatus for adjusting asymmetric recording signals
US5485320A · kind A · utility
6Cited by
7References
9Claims
0Family size
Assignee
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Key dates
| Filing date | May 24, 1993 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | May 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording system, an asymmetry detector reverses the phase of a read, single-frequency test signal to indicate to a micro-controller whether recording signal asymmetry is present. Upon detecting such asymmetry, the micro-controller causes a current source coupled to the recording head to adjust a write current to correct the timing of a written data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.