发明申请
- 专利标题: OPTICAL DISK DRIVES AND METHOD FOR CONTROLLING TRACK-SEEKING FOR OPTICAL DISK DRIVES
- 专利标题(中): 光盘驱动器和控制光盘驱动器跟踪的方法
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申请号: US12115601申请日: 2008-05-06
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公开(公告)号: US20090279395A1公开(公告)日: 2009-11-12
- 发明人: Ming-Tsang Wu , Yu-Chun Lin , Ying-Feng Huang , Hua-Ting Chi
- 申请人: Ming-Tsang Wu , Yu-Chun Lin , Ying-Feng Huang , Hua-Ting Chi
- 申请人地址: TW Hsin-Chu
- 专利权人: MEDIATEK INC.
- 当前专利权人: MEDIATEK INC.
- 当前专利权人地址: TW Hsin-Chu
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
The invention provides an optical disk drive. The optical disk drive comprises a pickup head, a seek control device, a lens vision characteristic decoder, and an anti lens shift device. The pickup head comprises a sled and a lens for projecting a beam on a disk. The seek control device moves the sled, and shifts the lens with a shift distance relative to an origin at a center of the sled. The equalizer derives a servo signal from a reflection of the beam. The lens vision characteristic decoder obtains a vision characteristic of the lens according to the servo signal and determines a track-on direction according to the vision characteristic. The anti lens shift device triggers the seek control device to perform a track-on process according to the track-on direction.