Head tracking servo pattern
US5453887A · kind A · utility
51Cited by
7References
77Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | May 11, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/106
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A servo pattern arrangement for controlling the position of a head has a first pattern, in which two frequency signal having different frequencies are arranged alternately in the width direction of a track in a two-track cycle. The servo pattern arrangement also has a second pattern which is repeated in a cycle of n tracks. The first and the second patterns are arranged in the longitudinal direction of the tracks so as to create a servo pattern arrangement with a wide servo capture range and so as to also ensure accurate detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.