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Apparatus for detecting focus error signal

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent

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Apparatus for detecting moving direction of light beam spot illu

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for detecting position of light spot

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for detecting positional deviation of a moving stage i

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for detecting whether information is recorded on a sto

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent

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Apparatus for discriminating optical disc and method therefor

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for driving an information recording medium and a meth

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for driving an objective lens utilizing flexible...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for driving objective lens

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for driving objective lens

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for enabling an autotrack circuit of an optical disc r

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for generating a tracking error signal

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for generating seek direction detecting signal...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating seek direction detection signal

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating track count pulse

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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Apparatus for generating tracking error signal in optical...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating tracking error signals

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating tracking error signals

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating tracking error signals

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate

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Apparatus for generating tracking error signals in a differentia

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
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