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.
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
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