Multiple beam optical memory system
US5526182A · kind A · utility
38Cited by
43References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1993 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Feb 17, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical memory system employing multiple reading/writing optical beams for simultaneously reading from or writing to multiple tracks of optical media to allow reading/writing of closely spaced adjacent tracks. Various optical elements and other means are incorporated to enable the beams as a group to remain focused and properly tracking as the beams as a group scan across the tracks. Means are also provided for modulating the beams to reduce crosstalk. Various optical elements and combinations of optical elements are provided to compensate for beam and system imperfections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.