Hierarchically multiplexed optical recording system for storage of digital data
US4958338A · kind A · utility
6Cited by
12References
7Claims
0Family size
Inventor
Key dates
| Filing date | Sep 1, 1988 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Sep 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for converting a series of discrete units of incoming digital data into a set of integer values and representing said values holographically, by dimensionalizing multiple aspects of reference laser signal, and multiplexing said aspects at the same storage location. The integer set is represented logarithmically by manipulating the dimensionalized aspects in a hierarchical order, resulting in a 16-fold increase in data density at the same physical storage location, as compared with a conventional binary storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.