发明名称 |
Optical reader/player preventing the unauthorized reading of information-carrying substrates |
摘要 |
An optical reader/player for reading and reproducing signals stored in an optical recording medium (CD, DVD, HD-DVD) possessing specific physical characteristics. If the measured characteristics of the polymer of the optical medium do not coincide with those of polymers authorized to be used to make optical recording media for the reader/player, the optical medium will not be read or played. |
申请公布号 |
US2001043533(A1) |
申请公布日期 |
2001.11.22 |
申请号 |
US20010776062 |
申请日期 |
2001.02.02 |
申请人 |
HAHNFELD JERRY L.;BUZANOWSKI WALTER C.;LEUGERS MARY A.;MCKELVY MARIANNE L.;MARTIN HENRI-LUC;WAINERDI THOMAS J. |
发明人 |
HAHNFELD JERRY L.;BUZANOWSKI WALTER C.;LEUGERS MARY A.;MCKELVY MARIANNE L.;MARTIN HENRI-LUC;WAINERDI THOMAS J. |
分类号 |
G11B7/0037;G11B7/24;G11B7/245;G11B7/253;G11B7/254;G11B7/26;G11B19/12;G11B23/28;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/0037 |
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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