Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2007-09-03
2011-10-11
Agustin, Peter Vincent (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S047390
Reexamination Certificate
active
08036082
ABSTRACT:
An optical disk drive includes a servo control unit7for causing an optical disk A to be driven; an optical pickup2for reading recorded data from the recording surface of the optical disk A after carrying out focus pulling-in of an object lens; a CPU8for controlling the servo control unit7and optical pickup2to perform readout operation of data recorded on the optical disk A; and a temperature detecting unit9for detecting temperature in the optical disk drive. The CPU8calculates the focus pull-in level in accordance with the temperature detected by the temperature detecting unit9, and carries out the focus pulling-in of the optical pickup2using the focus pull-in level.
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Kita Naoya
Mutou Hideki
Agustin Peter Vincent
Birch Stewart Kolasch & Birch, LLP.
Frank Emily
Mitsubishi Electric Corporation
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