发明名称 |
Optische Speicherplatte |
摘要 |
<p>PCT No. PCT/GB92/01920 Sec. 371 Date Apr. 7, 1994 Sec. 102(e) Date Apr. 7, 1994 PCT Filed Oct. 19, 1992 PCT Pub. No. WO93/08565 PCT Pub. Date Apr. 29, 1993.An optical data storage disc, for example, a compact disc, has one side formed with a pattern of indentations defining a digital data recording, and this side is metallized and further coated with a layer, which is embossed with a relief pattern defining a holographic image. The hologram may extend across the whole surface of the disc and is visible from the top side of the disc, while digital information is readable in a conventional manner using a laser directed at the underside of the disc.</p> |
申请公布号 |
DE69213952(D1) |
申请公布日期 |
1996.10.24 |
申请号 |
DE1992613952 |
申请日期 |
1992.10.19 |
申请人 |
APPLIED HOLOGRAPHICS PLC, WASHINGTON, TYNE & WEAR, GB |
发明人 |
ABRAHAM, NIGEL, CHRISTOPHER 14C WEST AVENUE, NEWCASTLE-UPON-TYNE NE3 4EF, GB |
分类号 |
G03H1/18;G11B7/00;G11B7/0065;G11B7/24;G11B7/26;G11B23/38;(IPC1-7):G11B7/00 |
主分类号 |
G03H1/18 |
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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