Opto-electronic memory systems
US5410502A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Jul 19, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C13/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an opto-electronic memory system having a memory element (14), for example an optical data card, in which optically-encoded data is stored in rows of memory locations (17) and reading elements (10,12) comprising a photosensitive element array (12) and operable to read out stored data in response to illumination of the memory locations, data is stored at memory locations as colors representing different data values and the memory locations are addressed with reading light of different colors in sequence, thereby enabling higher data storage capacities to be obtained. The memory locations may be reflective or transmissive. The reading elements may comprise linear or two dimensional arrays of photosensitive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.