发明名称 |
High-density disk recording medium having a reflecting surface and manufacturing method thereof |
摘要 |
The present invention relates to a high-density disk that is structured to prevent a collision of an optical pickup's objective lens with the high-density disk if the disk is placed upside down in a disk device that is able to record and reproduce signals to/from the high-density disk. A high-density disk recording medium according to the present invention has a reflecting thin film or label, formed on a surface opposite to a recording surface, to block a beam incident to an inserted disk not to travel up to a lead-in area, which a disk device tries to read first when a disk is placed, in the event that the inserted disk has been misplaced upside down.
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申请公布号 |
US2003007449(A1) |
申请公布日期 |
2003.01.09 |
申请号 |
US20020170543 |
申请日期 |
2002.06.14 |
申请人 |
KIM JIN YONG;PARK KYUNG CHAN;KIM WAE YEUL |
发明人 |
KIM JIN YONG;PARK KYUNG CHAN;KIM WAE YEUL |
分类号 |
G11B7/007;G11B7/085;G11B7/12;G11B7/24;G11B23/00;G11B23/40;(IPC1-7):G11B3/70;G11B5/84;G11B7/26;G11B21/08 |
主分类号 |
G11B7/007 |
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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