Servo mark verify head
US7072133B1 · kind B1 · utility
35Cited by
35References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2001 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Jul 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/2657
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention presents techniques for verifying patterns, such as time-based servo marks, recorded on magnetic media. Patterns of this kind can be recorded on a magnetic medium using a recording head that includes a surface having a flux gap with a defined shape. The patterns may be verified with a verify head, having a surface with a flux gap with the defined shape or part of the defined shape. The verify head may include two or more ferromagnetic cores, with a flux gap associated with each core. Each core can independently verify part of the recorded pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.