Apparatus for high density holographic optical data storage
US4998236A · kind A · utility
9Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1988 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Aug 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0065
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for writing and reading data provide storage in a volume of memory material consisting of inhomogenously broadened absorption centers such that a beam of electromagnetic radiation controlled to be independently steered and simultaneously shifted in wavelength can access information stored in four independent dimensions, three spatial and one spectral. The memory medium can be utilized to write and read a selectable connection matrix between two completely populated two-dimensional memory planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.