MEDHOD FOR READING-OUT PHASE-MODULATION RECORDED DATA IN A HOLOGRAPHIC MEDIUM

The invention relates to a method for reading-out data recorded in a holographic medium (106) as a phase-modulated pattern of data pixels. The method comprises the steps of reconstructing said phase-modulated pattern (P), duplicating said reconstructed phase- modulated pattern in a first reconstruct...

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1. Verfasser:	LIEDENBAUM, COEN
Format:	Patent
Sprache:	eng ; fre
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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creator	LIEDENBAUM, COEN
description	The invention relates to a method for reading-out data recorded in a holographic medium (106) as a phase-modulated pattern of data pixels. The method comprises the steps of reconstructing said phase-modulated pattern (P), duplicating said reconstructed phase- modulated pattern in a first reconstructed phase-modulated pattern (Pl) and a second phase- modulated pattern (P2) shifted from said first reconstructed phase-modulated pattern by an integer number of data pixels, and having interfere said first and second reconstructed phase- modulated patterns. La présente invention se rapporte à un procédé de lecture de données enregistrées sur un support holographique (106) sous la forme d'un motif modulé en phase de pixels de données. Le procédé selon l'invention comprend les étapes consistant : à reconstruire ledit motif modulé en phase (P) ; à dupliquer ledit motif modulé en phase en un premier motif modulé en phase reconstruit (P1) et un second motif modulé en phase reconstruit (P2), lequel présente un décalage d'un nombre entier de pixels de données par rapport au premier motif modulé en phase reconstruit ; et à procéder à l'interférence desdits premier et second motifs modulés en phase.
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subjects	CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHIC PROCESSES OR APPARATUS HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHOTOGRAPHY PHYSICS
title	MEDHOD FOR READING-OUT PHASE-MODULATION RECORDED DATA IN A HOLOGRAPHIC MEDIUM
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