发明名称 |
Method of recording on a magnetic medium and magnetic medium recorded according to this method |
摘要 |
This method consists in recording on the same track of a magnetic medium alternately plain messages and coded control information. The recording of the messages is interrupted at regular intervals over 10 to 50 milliseconds in order to record an item of coded control information during this time lapse. This method makes it impossible to fake a recorded tape.
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申请公布号 |
CH610135(A5) |
申请公布日期 |
1979.03.30 |
申请号 |
CH19760011118 |
申请日期 |
1976.09.02 |
申请人 |
PATEK PHILIPPE |
发明人 |
INVENTEUR A RENONCE A ETRE MENTIONNE |
分类号 |
G11B20/00;G11B27/30;(IPC1-7):G11B5/02 |
主分类号 |
G11B20/00 |
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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