发明名称 |
Tracking system for optical disc memory using tracking error signals from main beam and auxiliary beams |
摘要 |
A tracking system for positioning a light spot onto a magneto optic or optical disc having a beam guide track preformatted thereon comprises a main light beam and two auxiliary light beams, and a circuit for subtracting a low frequency component of a difference between the tracking error signals, detected by the respective auxiliary light beams and the main light beam, from a tracking error signal detected by the main light beam.
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申请公布号 |
US5412630(A) |
申请公布日期 |
1995.05.02 |
申请号 |
US19940289565 |
申请日期 |
1994.08.12 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
DEGUCHI, TOSHIHISA;INUI, TETSUYA;OHTA, KENJI;KATOH, SHOHICHI |
分类号 |
G11B7/09;G11B7/095;(IPC1-7):G11B7/095 |
主分类号 |
G11B7/09 |
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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