Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2008-07-10
2011-10-04
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S047470, C369S112010
Reexamination Certificate
active
08031566
ABSTRACT:
A gap servo control method and apparatus for increasing a disturbance cancellation capability and decreasing the occurrence of an overshoot in a near-field optical disc drive include: generating an actuator driving signal of a transient response process by using a signal obtained by removing a disturbance contained in the gap error signal using a first band when a level of a gap error signal reaches a first level; and generating the actuator driving signal of the transient response process by using a signal obtained by removing the disturbance contained in the gap error signal using a second band when the level of the gap error signal reaches a second level.
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International Search Report and Written Opinion issued in corresponding International Application No. PCT/KR2008/003851 dated Nov. 21, 2008.
Kim Joong-gon
Park Noh-cheol
Park Young-jae
Yang Hyun-seok
Alunkal Thomas
Industry-Academic Cooperation Foundation - Yonsei University
NSIP Law, PC
Samsung Electronics Co,. Ltd.
Young Wayne
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