Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2005-05-20
2009-02-10
Hindi, Nabil Z (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044260
Reexamination Certificate
active
07489602
ABSTRACT:
An apparatus and method for layer jump braking control is disclosed. The apparatus is applied to an optical drive and generates a non-fixed braking signal according to a focusing error signal. The non-fixed braking signal is provided to a driver for outputting a corresponding driving force, thereby controlling a pick up head of the optical drive to perform a layer jump braking process. By using the non-fixed braking signal, the disadvantage of the conventional fixed braking signal, which cannot adapt to variations of optical disks and is subject to layer jump failure, can be avoided.
REFERENCES:
patent: 6775209 (2004-08-01), Kobayashi
patent: 6801485 (2004-10-01), Chiang
patent: 7009917 (2006-03-01), Chiang et al.
patent: 7184374 (2007-02-01), Chung et al.
patent: 1416122 (2003-05-01), None
Hindi Nabil Z
Realtek Semiconductor Corp.
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