Magnetic scanning system
US6853513B2 · kind B2 · utility
0Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jul 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4907
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning device for scanning data-carrying disks. The disks include a magnetisable layer to and from which data is written and read using a magnetic transducer, such as a Giant Magneto-Resistive (GMR) transducer. Positioning of the transducer over a data track is achieved by optical tracking using a land/groove structure, and positioning of the transducer with respect to the optical tracking system by means of a reference beam transmitted through the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.