Alignment disk for magnetic head azimuth correction
US5043837A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Aug 15, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An azimuth adjustment disk having first and second areas alternately recorded in a circumfrential direction. Each of the first areas has two azimuth burst signal. The two azimuth burst signals have different azimuths and a first signal wavelength. While each of the second areas has two azimuth burst signals with azimuths corresponding to the bursts of the first areas, but which have a longer wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.