Holographic storage and reproduction system and method with servo
US7859970B2 · kind B2 · utility
1Cited by
3References
18Claims
0Family size
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Key dates
| Filing date | Jul 6, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jul 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A holographic storage and reproduction system and method with a servo are provided, wherein a servo mechanism is provided, such that the holographic interferogram is continuously stored in the holographic recording medium. When a reproduced signal is to be obtained, it can be retrieved quickly and accurately through the servo mechanism. Also, the intensity distribution of the reference light reflected by the holographic recording medium can be monitored and controlled, such that the relative distance and oblique angle between the storage and reproduction system and the holographic recording medium are analyzed and adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.