RECORDING/PLAYBACK APPARATUS AND METHOD FOR DISCRIMINATING A CONTAMINATED LENS AND FOR CLEARING THE LENS

RECORDING/PLAYBACK APPARATUS AND METHOD FOR DISCRIMINATING A CONTAMINATED LENS AND FOR CLEARING THE LENS

A record/playback apparatus, and a contamination discriminating method and a contaminant eliminating method of a lens are provided to detect the contamination of the lens and remove the contaminant easily. A contamination discriminating method and a contaminant eliminating method include a step for...

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Hauptverfasser: LEE, KYUNG TAEK, SON, DO HYEON
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 LEE, KYUNG TAEK
SON, DO HYEON
description A record/playback apparatus, and a contamination discriminating method and a contaminant eliminating method of a lens are provided to detect the contamination of the lens and remove the contaminant easily. A contamination discriminating method and a contaminant eliminating method include a step for detecting a signal which corresponds to the quantity of light reflected by the recording medium from a far field when a record/playback apparatus is driven(S21,S22); a step for determining contamination of a lens unit by using the detected signal(S23); and a step for performing the decontamination process of the lens when the lens unit is contaminated(S24).
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title RECORDING/PLAYBACK APPARATUS AND METHOD FOR DISCRIMINATING A CONTAMINATED LENS AND FOR CLEARING THE LENS
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