Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2006-03-07
2006-03-07
Nguyen, Hoa T. (Department: 2655)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S053230, C369S044290, C369S044260, C369S044250
Reexamination Certificate
active
07009918
ABSTRACT:
The present invention provides an information storage apparatus that generates a tracking error signal based on a detection signal, and performs various control operations based on the tracking error signal. When the operation mode is a seek operation mode, the information storage apparatus generates a tracking error signal by holding the peak value of the detection signal. When the operation mode is a tracking operation mode, the information storage apparatus generates a tracking error signal directly from the detection signal. With this information storage apparatus, stable control operations can be performed, regardless of changes of conditions.
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Ikeda Toru
Moritsugu Masaharu
Nishida Masatsugu
Fujitsu Limited
Greer Burns & Crain Ltd.
Nguyen Hoa T.
Ortiz-Criado Jorge L.
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