发明名称 |
Optical record carrier having contrast enhancing information and servo-tracks |
摘要 |
An inscribable record carrier (1) is described, which comprises a previously recorded servo-track structure provided with a recording layer. The contrast between the servo-tracks (3) provided with information areas and the intermediate tracks (5) is increased by combining wide tracks (20) with a white-writing recording layer (24) or by combining narrow servo-tracks (20) with a black-writing recording layer (21). (FIGS. 6, 7) |
申请公布号 |
US4949332(A) |
申请公布日期 |
1990.08.14 |
申请号 |
US19880191505 |
申请日期 |
1988.05.09 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
VEENIS, AARTJE W.;MIMNAGH, WINSLOW M. |
分类号 |
G11B7/00;G11B7/004;G11B7/007;G11B7/013;G11B7/09;G11B7/095;G11B7/24 |
主分类号 |
G11B7/00 |
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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