发明名称 |
Circuit arrangements for calibrating signals |
摘要 |
A circuit arrangement for calibrating a signal by calibrating a storage medium upon which the signal is recorded comprising circuits for producing calibration signals and for interfacing information, calibration and marking signals, a timing and control circuit for controlling periods of calibrating signals recorded on the storage medium and derived by a calibrating circuit.
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申请公布号 |
US4150403(A) |
申请公布日期 |
1979.04.17 |
申请号 |
US19760728558 |
申请日期 |
1976.10.01 |
申请人 |
COAL INDUSTRY (PATENTS) LIMITED |
发明人 |
MILLER, STANLEY P. |
分类号 |
E21F17/18;G01D18/00;G12B13/00;(IPC1-7):G11B5/02 |
主分类号 |
E21F17/18 |
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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