| 发明名称 |
RECORDING MEDIUM, READ-OUT DEVICE, AND WRITE-IN DEVICE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a recording medium which is more safe and can be utilized in only a prescribed period set by a provider side. <P>SOLUTION: The recording medium 1 is provided with an IC part 14 at a part of a non-recording region 12 on the inner periphery of a recording region 13 where data can be optically read out. The IC part 14 is provided with an IC interface 21 formed and exposed so that electric connection is made possible and an aging part 27 aging without receiving electric power. A reading/writing device 2 of the recording medium 1 judges whether the medium 1 is in the period during which the medium 1 can be utilized by measuring the state of the aging part 27. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
| 申请公布号 |
JP2004296031(A) |
申请公布日期 |
2004.10.21 |
| 申请号 |
JP20030089694 |
申请日期 |
2003.03.28 |
| 申请人 |
TOSHIBA CORP |
发明人 |
KOJIMA KENJI;UMEZAWA KENTARO;MIYAKE HIDEYUKI;MATSUSHITA TATSUYUKI;TOMOE HIROKI;SHIMIZU HIDEO;WATANABE HIROSHI |
| 分类号 |
G11B33/12;G11B7/24;G11B20/10;G11B23/30;H01L21/8247;H01L27/115;H01L29/788;H01L29/792 |
主分类号 |
G11B33/12 |
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