发明名称 |
Rotation control device, method thereof, program thereof, recording medium storing the program, and information processing apparatus |
摘要 |
<p>A temperature sensor (131) detects a temperature of a spindle motor (121) of a rotary drive unit (120) for rotating a disk-shaped recording medium (1), and a temperature information acquiring unit (134A) acquires the temperatures as temperature information. An eccentricity detector (132) detects a drive voltage level, and an eccentricity information acquiring unit (134B) acquires the drive voltage level as eccentricity information. When a determining unit (134C) determines that the temperature is higher than a predetermined temperature or that the drive voltage level is higher than a predetermined voltage, a servo controller (133) switches a rotation mode from constant liner velocity to constant angular velocity. That enables stable information processing over a long time with a simple structure for constant linear velocity.</p> |
申请公布号 |
EP1473711(A2) |
申请公布日期 |
2004.11.03 |
申请号 |
EP20040252550 |
申请日期 |
2004.04.30 |
申请人 |
PIONEER CORPORATION |
发明人 |
SUZUKI, YASUTAKA;MATSUO, KAZUNORI |
分类号 |
G11B19/04;G11B19/28;G11B5/09;G11B7/00;G11B7/095;G11B15/46;G11B15/48;(IPC1-7):G11B7/00 |
主分类号 |
G11B19/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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