发明名称 |
Device for reducing cross talk in signal detecting apparatus used in an optical pickup device |
摘要 |
A tracking error signal detecting apparatus with improvement in offset due to gain characteristics and/or a difference in the depth between pits by providing an improved sectioning structure of an eight-sectional photodetector having inner and outer sectional plates, the radial widths of which vary along the tangential direction from the center of the photodetector, and a reproduction signal detecting apparatus with reduced crosstalk noise. The tracking error signal detecting apparatus can allow accurate tracking control in a high-density recording medium having relatively narrow tracks. Also, the reproduction signal detecting apparatus can correct signal distortion due to a difference between phase characteristics of detection signals of inner and outer sectional plates of a photodetector even during reproduction of an information signal from a high-density recording medium having relatively narrow tracks, thereby detecting an improved reproduction signal with greatly reduced crosstalk.
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申请公布号 |
US6584049(B1) |
申请公布日期 |
2003.06.24 |
申请号 |
US20000698048 |
申请日期 |
2000.10.30 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
MA BYUNG-IN;PARK IN-SIK;SEO JOONG-EON;CHUNG CHONG-SAM |
分类号 |
G11B7/005;G11B7/09;G11B7/13;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/005 |
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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