发明申请
- 专利标题： Information access control for optical media
- 专利标题（中）： 光学介质的信息访问控制
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申请号： US10784075申请日： 2004-02-19
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公开(公告)号： US20050185548A1公开(公告)日： 2005-08-25
- 发明人: Charles Weirauch , Edward Beeman , Christiaan Steenbergen , Dirk Erickson , Thomas Pratt
- 申请人： Charles Weirauch , Edward Beeman , Christiaan Steenbergen , Dirk Erickson , Thomas Pratt
- 主分类号： G11B7/24
- IPC分类号： G11B7/24 ; G06F12/14 ; G11B5/58 ; G11B7/00 ; G11B7/004 ; G11B7/007 ; G11B19/02 ; G11B19/12 ; G11B20/00 ; G11B20/10 ; G11B23/36
摘要：
A drive refuses to transfer information from a first surface on an optical medium unless required information is present on a second surface of the medium. Optionally, information on the first surface may indicate that information on the second surface is required. For example, a drive may refuse to transfer data from a data surface unless a serial number is readable on an exterior surface.
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