Floating type magneto-optic disk reading head system having external semiconductor laser resonator operating at orthogonal two mode oscillations
US4955006A · kind A · utility
13Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Jan 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10576
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optic disk reading head system including an external semiconductor laser resonator. A magneto-optic disk forms a part of the external resonator. In the external resonator, orthogonal two mode oscillations are established to produce a beat signal used for reading data stored in the magneto-optic disk. The magneto-optic disk reading head system is a floating type reading head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.