Shielded servo heads with improved passive noise cancellation
US5198948A · kind A · utility
31Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4886
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A servo head in a disk file data storage system includes at least one shield which acts to block radiation emanating from a nearby data head and thus reduce noise induced in the servo head. The shield is located on either side of an essentially flat conducting coil in a servo transducer, or a data transducer or both. The shield may be either a single layer of material or multiple layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.