Apparatus, system, and method for controlling recording head substrate bias voltage
US7742252B2 · kind B2 · utility
5Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Nov 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, and method are disclosed for dynamically controlling a recording head substrate bias voltage. The apparatus includes a midpoint module and a substrate module. The midpoint module calculates a midpoint voltage of a plurality of data read elements and servo read elements contained in the head. The substrate module calculates a substrate bias voltage. The apparatus, system, and method dynamically control the substrate bias voltage post-assembly, minimizing certain head degradations and extending the life of associated head readers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.