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
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