Methods for optical data storage and apparatus for same
US6418092B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1998 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0065
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for optical data storage, a write/read device is employed with a first optical lens system consisting of an array of lenslets which are associated with one or more areas on a data-carrying medium which forms part of the optical data memory. During writing/reading of data in the data-carrying medium the optical data medium is positioned on one or more reference surfaces. When localizing or reading data which are stored in an optical data memory in this fashion, the data-carrying medium is brought in register with the first optical lens system in the write/read device, whereupon light from the write/read device passes through a set of angular coordinates, the optical response from the data-carrying medium being detected simultaneously and in parallel by means of the write/read device. A device for implementation of the method comprises a write/read device in which there is provided a first optical system consisting of an array of lenslets, one or more light sources for illumination of the lenslets, a second optical system for imaging of the data-carrying medium and an electronic detector, the write/read device being further connected to an analysis unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.