DEVICE FOR INFORMATION STORAGE

FIELD: optical instruments for information storage. SUBSTANCE: laser light with low coherence and high intensity is modulated according to double refraction in electric field and is directed to soundtrack of cinema film. Light modulator is located in definition range of laser beam which has focal po...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SIGEO KUBOTA, ATSUSI FUKUMOTO, KHIROSI SUGANUMA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CALCULATING CINEMATOGRAPHY COMPUTING COUNTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTROGRAPHY FREQUENCY-CHANGING HANDLING RECORD CARRIERS HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	FIELD: optical instruments for information storage. SUBSTANCE: laser light with low coherence and high intensity is modulated according to double refraction in electric field and is directed to soundtrack of cinema film. Light modulator is located in definition range of laser beam which has focal point between modulator and lens which generates image. Time for storage of voice data is decreased due to use of laser light. Speckle noise is suppressed and image generation characteristic is improved due to control of focal point of laser beam. Since laser beam has low coherence, need in polarizing plate is eliminated. This results in possibility to decrease number of elements. EFFECT: increased speed and decreased cost of recording. 9 cl, 11 dwg