公开(公告)号：US5180117A

公开(公告)日：1993-01-19

申请号：US537640

申请日：1990-06-14

申请人： Nobuo Katohno ,  Yoshihiro Shibata

发明人： Nobuo Katohno ,  Yoshihiro Shibata

IPC分类号： G11B15/18 ,  G11B15/29 ,  G11B15/43 ,  G11B15/44

CPC分类号： G11B15/43 ,  G11B15/29 ,  G11B15/444

摘要： In a video tape recorder and/or reproducer, the power of a capstan motor for driving a magnetic tape is utilized as the power for driving reels in a cassette. In order to facilitate controlling the tension of the magnetic tape at the time of a change in the travelling direction of the tape in an intermittent tape travel mode, it is possible to drive a feed-side reel without turning OFF a back tension servo mechanism which applies back tension to the feed-side reel. In this state, the change in the travelling direction of the magnetic tape is performed by only controlling the direction of rotation of the capstan motor.

摘要翻译： 在磁带录像机和/或再生器中，用于驱动磁带的主导轴马达的功率被用作驱动盒中的卷轴的功率。 为了便于在间歇磁带行驶模式下在磁带的行进方向改变时控制磁带的张力，可以驱动馈送侧卷轴而不关闭背张力伺服机构， 向进料侧卷轴施加反向张力。 在这种状态下，通过仅控制主导轴马达的旋转方向来进行磁带的行进方向的变化。