发明名称 |
Relative position sensing calibration for optical storage device |
摘要 |
A relative position error signal is calibrated in an optical storage device in which a tracking error signal (TES) varies as the light beam shifts its position through the objective lens. The calibration is performed by moving the coarse carriage to a predetermined region of the optical disk and measuring the TES. The fine actuator is adjusted until the tracking error signal equals a predetermined value. Then, the relative position error signal is read and an adjustment to the RPE gain is calculated to bring the gain to a predetermined value. The adjusted gain is used during normal disk access operations.
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申请公布号 |
US5425013(A) |
申请公布日期 |
1995.06.13 |
申请号 |
US19930151238 |
申请日期 |
1993.11.12 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FENNEMA, ALAN A.;GARDNER, TIMOTHY S.;GOODMAN, BRIAN G.;HIRASAKA, YOSHIHIRO |
分类号 |
G11B7/085;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/085 |
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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