Self-servo-write systems for detecting interference caused by pre-written seed wedges
US10068589B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Sep 14, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system includes a controller and a detector. The controller is configured to read servo spirals written on a magnetic surface of a disk drive. The servo spirals are written on the magnetic surface of the disk drive based on seed wedges. The seed wedges are written on the magnetic surface of the disk drive prior to writing the servo spirals on the magnetic surface of the disk drive. The controller is configured to write a servo pattern on the magnetic surface of the disk drive based on reading the servo spirals written on the magnetic surface of the disk drive. The detector is configured to detect, while reading the servo spiral written on the magnetic surface of the disk drive, interference caused by the seed wedges written on the magnetic surface of the disk drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.