Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1996-09-20
2000-02-15
Cabeca, John W.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 50, 369 54, 369 4426, 369190, 369 94, G11B 1100, G11B 700
Patent
active
060260688
ABSTRACT:
A constant linear velocity control (CLV control) for controlling a spindle motor so as to set a linear velocity in a track circumferential direction to be constant and a constant angular velocity control (CAV control) for controlling the spindle motor so as to set a rotation of a medium to be constant are switched and controlled for a change in position in the radial direction of the medium of a pickup in accordance with a detection result of the medium loaded. In the switching control, selection information of the CLV control and the CAV control is previously registered in accordance with the kind of medium and the CLV control or the CAV control is selected in accordance with the corresponding selection information obtained from the detection result of the medium.
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Obata Kiyoshi
Okazaki Nozomu
Saito Shuko
Tsuji Tetsuya
Cabeca John W.
Chu Kim-Kwok
Fujitsu Limited
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