Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2005-09-13
2005-09-13
Dinh, Tan (Department: 2653)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S053410
Reexamination Certificate
active
06944108
ABSTRACT:
The optical disk player of the present invention is capable of controlling rotational speed of an optical disk, on the basis of a shape of the optical disk, so as to stably and efficiently write data in and read data from the optical disk. The optical disk player comprises: a motor for rotating the optical disk; and an optical pickup for irradiating a laser beam to the optical disk and receiving a reflected beam reflected therefrom. A CPU analyzes signals included in the reflected beam so as to recognize a shape of the optical disk. A servo processor controls rotational speed of the optical disk on the basis of the shape of the optical disk recognized by the CPU.
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Birch & Stewart Kolasch & Birch, LLP
Dinh Tan
Shinano Kenshi Kabushiki Kaisha
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