Compound phase encoding for printed servo patterns
US7167329B2 · kind B2 · utility
17Cited by
29References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Feb 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A type of servo pattern suitable for tracking systems in magnetic recording devices such as floppy disks or linear tape or hard disks or in other machines. The pattern comprises several phase-encoded elements that provide an absolute transverse position coordinate from local data. Computations can be made with channel chips commonly used in magnetic recording disk drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.