Tape deck with take-up reel rotation sensor configured to prevent tape
windup on the capstan or pinch roller
    1.
    发明授权
    Tape deck with take-up reel rotation sensor configured to prevent tape windup on the capstan or pinch roller 失效
    带有卷取卷轴旋转传感器的磁带机架,其配置为防止磁带卷绕在绞盘或夹送辊上

    公开(公告)号:US4508280A

    公开(公告)日:1985-04-02

    申请号:US565768

    申请日:1983-11-09

    摘要: A tape deck, which incorporates a non-contacting take-up reel rotation sensing means and associated sensing circuit for enabling the capstan and take-up reel drive mechanism. A magnetic field sensor is positioned across an air gap from a take-up reel mounted magnet to sense the pulsating magnetic field and control operation of the sensing circuit. A magnetic field interrupting means is caused to assume a non-interrupting position when the take-up reel is rotated in its proper direction and to assume a magnetic field interrupting position between the magnetic and the magnetic field sensor when the take-up reel and magnet are caused to be rotated in the opposite direction.

    摘要翻译: PCT No.PCT / US83 / 01768 Sec。 371日期1983年11月9日 102(e)1983年11月9日的PCT日期1983年11月9日提交。一种磁带机,其包括非接触式卷取卷轴旋转感测装置和相关联的感测电路,用于实现主导轴和卷带盘驱动机构 。 一个磁场传感器位于与卷带盘安装的磁体的气隙之间,以感测脉动磁场并控制感测电路的运行。 当卷取卷轴在正确的方向旋转时,使磁场中断装置呈现非中断位置,并且当卷取卷轴和磁铁的磁铁和磁铁传感器之间呈现磁场中断位置时 使其沿相反方向旋转。