Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1996-11-19
2000-09-19
Hindi, Nabil
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 32, G11B 700
Patent
active
061222348
ABSTRACT:
The information storing apparatus uses an inexpensive synchronous motor as a spindle motor and can execute speed control quickly and accurately. To achieve this, whether the information storing apparatus is in the ordinary read mode or the seek mode is determined from position information of a pickup. In the read mode, the amount of power supplied to the spindle motor is set at the necessary minimum value. In the seek mode, the rotation speed of the spindle motor is changed to match the pickup speed, and the power to be supplied to the spindle motor is increased. As a result, power consumption in the ordinary state can be minimized, and power savings, low noise, low vibrations, and low heat generation can be realized. In addition, in the seek mode, the power required for changing the rotation speed of the recording disk is increased, so that the torque is increased, thereby performing a quick speed change.
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Fujitani Sakae
Suzuki Yuzuru
Hindi Nabil
Minebea Co. Ltd.
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