公开(公告)号：US06257515B1

公开(公告)日：2001-07-10

申请号：US09520364

申请日：2000-03-07

申请人： Kazunori Fukuda ,  Kazuo Ueo

发明人： Kazunori Fukuda ,  Kazuo Ueo

IPC分类号： G03B2150

CPC分类号： G11B15/54 ,  G11B15/093

摘要： A magnetic recording and reproducing apparatus feeds magnetic tape from a supply reel to a take-up reel driven by a motor. Sensors generate signals responsive to each revolution of the supply reel and to the rotation of the motor. An end-of-tape detector counts the number of motor-sensor signals per revolution of the supply reel, and thereby detects the approaching end of the magnetic tape, so that the motor can be slowed before the end of the tape is reached. A detection threshold may be selected or computed in advance by using information provided by a third sensor, which generates a signal responsive to each revolution of the take-up reel.

摘要翻译： 磁记录和再现装置将磁带从供应卷轴馈送到由马达驱动的卷取卷轴。 传感器响应于供应卷轴的每一转和马达的旋转而产生信号。 磁带终端检测器计算供应卷轴每转一圈的电机传感器信号数，从而检测磁带的接近端，从而在磁带结束之前马达可以减慢速度。 可以通过使用由第三传感器提供的信息来预先选择或计算检测阈值，该第三传感器产生响应于卷取卷轴的每一转的信号。