Parallel servo control in a data storage device
US10964345B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2020 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | May 22, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device includes a first data storage surface and a second data storage below the first data storage surface. The data storage device also includes a first micro-actuator coupled to a first arm that supports a first head over the first data storage surface, and a second micro-actuator coupled to a second arm that supports a second head over the second data storage surface. The data storage device further includes a coarse actuator, to which the first and second arms are coupled, that positions the first head and the second head between corresponding first and second tracks on the respective first and second data storage surfaces. Micro-actuator drive circuitry finely positions the first head over the first track and the second head over the second track by concurrently driving the first micro-actuator and the second micro-actuator in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.