RECORDER AND PLAYER APPARATUS STABLY KEEPING TRACK OF RECORDING MEDIUM

RECORDER AND PLAYER APPARATUS STABLY KEEPING TRACK OF RECORDING MEDIUM

The first, third, fourth, and seventh photosensors are disposed on one side with respect to the centerline, and the second, fifth, sixth, and eighth photosensors are disposed on another side with respect to the centerline. The first and seventh photosensors are positioned between the third and fourt...

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Hauptverfasser: TAKAHASHI Yuichi, SANO Kousei, MOMOO Kazuo, ASADA Junichi, KOBAYASHI Yasushi
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator TAKAHASHI Yuichi
SANO Kousei
MOMOO Kazuo
ASADA Junichi
KOBAYASHI Yasushi
description The first, third, fourth, and seventh photosensors are disposed on one side with respect to the centerline, and the second, fifth, sixth, and eighth photosensors are disposed on another side with respect to the centerline. The first and seventh photosensors are positioned between the third and fourth photosensors in the direction parallel to the centerline. The second and eighth photosensors are positioned between the fifth and sixth photosensors in the direction parallel to the centerline. The first photosensor receives overlapped light of the 0th-order light with the +1st-order diffracted light, the second photosensor receives overlapped light of the 0th-order light with the −1st-order diffracted light, each of the third to sixth photosensors receives the 0th-order light, and does not receive the +1st-order diffracted light and the −1st-order diffracted light, and each of the seventh and eighth photosensors receives at least the 0th-order light.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title RECORDER AND PLAYER APPARATUS STABLY KEEPING TRACK OF RECORDING MEDIUM
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