发明名称 |
Frequency based cartridge detection system |
摘要 |
A data storage disk having a latent illuminance discrimination marker for determining whether the data storage disk is suitable for use in a disk drive. A light source illuminates the marker and the marker emits illuminance, preferably as phosphorescence. A detector detects the emitted illuminance, and a predetermined characteristic of the marker in the frequency domain is determined. The frequency domain response may be either a phase response or an amplitude response, or both. The frequency domain response provides identification of different types or generations of data storage disks or provides a secure keying mechanism for authorized access to proprietary software.
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申请公布号 |
US6424492(B1) |
申请公布日期 |
2002.07.23 |
申请号 |
US20000556534 |
申请日期 |
2000.04.24 |
申请人 |
IOMEGA CORPORATION |
发明人 |
ALLGOOD ROBERT D.;SMITH PAUL;THOMAS, III FRED C. |
分类号 |
G11B19/12;G11B23/03;(IPC1-7):G11B19/02 |
主分类号 |
G11B19/12 |
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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