Twin head design for micro-actuator position sensing in a hard disk drive
US6078476A · kind A · utility
18Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5534
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator architecture allows precision control of a micro-actuator read/write head 16a, 16b by measuring the position directly with the read/write heads rather than relying on a position sensor. The position of the micro-actuator head 16a, 16b with respect to the conventional actuator assembly 12 is determined by comparing the position of the micro-actuator head 16a with the position of a second head 16b affixed to the conventional actuator 12 using disk servo patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.