HIGH DATA DENSITY VOLUMETRIC HOLOGRAPHIC DATA STORAGE METHOD AND SYSTEM

HIGH DATA DENSITY VOLUMETRIC HOLOGRAPHIC DATA STORAGE METHOD AND SYSTEM

The accurate places for writing of holograms into volumetric data storage layer in a data carrier structure, are determined by the intersection range of object and reference beam, during writing process. The addressed holograms are read by simultaneously illuminating the holograms by reference beams...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ERDEI, GABOR, SZARVAS, GABOR, KOPPA, PAL, DOMJAEN, LASZLO, SUETO, ATTILA, KALLO, PETER
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHOTOGRAPHY
PHYSICS
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Beschreibung
Zusammenfassung:The accurate places for writing of holograms into volumetric data storage layer in a data carrier structure, are determined by the intersection range of object and reference beam, during writing process. The addressed holograms are read by simultaneously illuminating the holograms by reference beams. Independent claims are also included for the following: (1) optical arrangement for recording and reading holograms; (2) compensating plate; (3) variable back focal length read/write head; and (4) reflection-type multilayer data carrier.