公开(公告)号：US5138504A

公开(公告)日：1992-08-11

申请号：US493407

申请日：1990-03-14

申请人： Hideo Nishijima ,  Kooji Kaniwa ,  Kouji Fujita ,  Yuji Inaba

发明人： Hideo Nishijima ,  Kooji Kaniwa ,  Kouji Fujita ,  Yuji Inaba

IPC分类号： G11B15/46 ,  G11B15/467 ,  G11B15/48

CPC分类号： G11B15/48 ,  G11B15/46 ,  G11B15/4675

摘要： A tape transport control apparatus relating to changing means of high speed reel control transport and low speed capstan control transport in a tape transport control of a magnetic recording regenerative apparatus or the like. Particularly in a period of transition from the high speed driving state to the low speed driving state, a capstan motor is controlled through means for comparing phase of the control signal of the tape transport speed regenerated on the tape with phase of the capstan frequency generator signal of the capstan, and after the phase comparing means detects that the tape speed and the capstan rotational speed are coincident, the pinch roller is pressed against the capstan.

摘要翻译： 一种磁带传送控制装置，涉及在磁记录再生设备等的磁带传送控制中的高速卷轴控制传输和低速主导轴控制传输的改变装置。 特别是在从高速驱动状态向低速驱动状态转变的时段中，主导马达通过用于比较在带上再生的带传送速度的控制信号与主导轴频率发生器信号的相位的相位的装置进行控制 并且在相位比较装置检测到磁带速度和主导轴转速一致之后，压紧辊被压靠在主导轴上。