Magneto-optic storage media
US4556291A · kind A · utility
32Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Aug 8, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magneto-optic storage media which utilizes two layers or films of magnetic material, with the magneto-optic hysteresis loop of one of the films being of a sense opposite to the sense of the magneto-optic hysteresis loop of the other film. The media permits the Farraday effect polarization rotations produced by one of the magnetic films to be in phase with Kerr effect polarization rotations produced by the other of the magnetic films, such that additive mode conversion is provided from different portions of the media whereby the detected signal has an increased signal-to-noise ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.