Direct overwrite magneto-optic system for strip erasing and recording elongated domains
US5528564A · kind A · utility
11Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2525
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for recording, erasing and reading elongated magnetic domains on magneto-optic media using laser energy. Recording and erasing can be carried out in the absence of a reversible external magnetic bias field. The preferred magneto-optic media to be used have compensation temperatures higher than about 40.degree. C. Recording and erasing are carried out using either continuously or intermittently energized lasers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.