Disc drive servo pattern insensitive to read head
US6067204A · kind A · utility
15Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a disc drive, a position error signal (PES) can be generated that is insensitive to the read element's magnetic and physical geometry and micro-track profile, and that has a spatial domain periodic frequency that corresponds to a frequency region of the micro-track profile that facilitates a high magnitude response. The servo pattern for generating this PES includes a first servo burst pair (A,B) and a second servo burst pair (C,D) of servo burst members, each pair written as normal and quadrature channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.