Dual-surface self-servo-write for storage device
US11430481B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2021 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Sep 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A self-servo-write (SSW) method in a storage device includes detecting, with a first read head, SSW spiral signals from a first track on a first storage medium surface, processing the SSW spiral signals from the first track using a first read channel, to generate first control signals for positioning the first read head relative to the first track, detecting, with a second read head, SSW spiral signals from a second track on a second storage medium surface, processing the SSW spiral signals from the second track using a second read channel, to generate second control signals for positioning the second read head relative to the second track, positioning a first write head relative to the first track using the first control signals via a single write channel, and positioning a second write head relative to the second track using the second control signals via the single write channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.