FOCUS SERVO CONTROL DEVICE

PROBLEM TO BE SOLVED: To move a light spot to a focus servo pull-in region in a short time. SOLUTION: Level shift quantity Vs is set from the total sum of voltage values of a focus error signal FE, and it is selected by using an output signal (a) of a pull-in range discrimination, an output signal (...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SUGIURA HIROHIKO, ONODA ATSUO, HASHIMOTO AKIRA, TAKEDA TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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