发明授权
- 专利标题: Optical disk apparatus
- 专利标题(中): 检测异常状态的盘装置
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申请号: US10463368申请日: 2003-06-17
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公开(公告)号: US06834030B2公开(公告)日: 2004-12-21
- 发明人: Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
- 申请人: Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
- 优先权: JP11-305030 19991027
- 主分类号: G11B700
- IPC分类号: G11B700
摘要:
An optical disk apparatus includes: a light irradiator operable to converge a light beam and irradiate an information carrier with the converged light beam; a traverse motor operable to move the light beam in a direction traversing a track formed on a surface of the information carrier; and a tracking controller operable to control the traverse motor to scan the track with the light beam. The tracking controller includes a deviation detector operable to generate a detection signal, a tracking driving circuit operable to generate a driving signal, an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period and an abnormal state detector operable to detect an abnormal state of the traverse motor based on an output of the integrator.
公开/授权文献
- US20030227840A1 Optical disk apparatus 公开/授权日:2003-12-11