发明名称 Monitoring tape position in a magnetic recording/reproducing apparatus
摘要 A magnetic recording/reproducing apparatus includes a mechanism body, a control circuit, and a memory circuit. The mechanism body has a loading mechanism, a tape traveling mechanism, and a reel revolution count detection mechanism for outputting a signal corresponding to a revolution count of the reel. The control circuit drive-controls the loading mechanism and the tape traveling mechanism, calculates a cumulative revolution count of the reel from an output of the reel revolution count detection mechanism, and controls recording and reproduction of data, including a video signal and a track number, on and from the magnetic tape. The memory circuit stores the cumulative revolution count of the reel and the track number upon recording and reproduction of the data on and from the magnetic tape. The control circuit reads out form the memory circuit a cumulative revolution count of the reel corresponding to a track number of a target position to which the magnetic tape is to be positioned, compares the readout cumulative revolution count with the cumulative revolution count of the reel of the magnetic tape that travels in a non-contact state with respect to the rotary drum, and positions the magnetic tape.
申请公布号 US5805371(A) 申请公布日期 1998.09.08
申请号 US19960626411 申请日期 1996.04.02
申请人 SHARP KABUSHIKI KAISHA 发明人 UEJIMA, TAKAMASA;MINAGAWA, TOHRU
分类号 G11B15/03;G11B15/18;G11B15/20;G11B27/10;G11B27/17;G11B27/28;G11B27/30;(IPC1-7):G11B15/18 主分类号 G11B15/03
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