| 摘要 |
<p>PURPOSE:To perform reproduction of recording information by providing a comparator connected to a counter counting the no-signal parts of magnetic tape. CONSTITUTION:Intermusic no-signal parts are detected with a detection head 6 which is sliding with a tape 3 being run by fast feeding or rewinding. These are amplified to suitable levels by an amplifier 22 including a detection circuit and outputting only at the no-signal time and are sent to an AND gate 24. A counter 25 counts the pulse numbers in the detection signals r1, r2, r3 and inputs the same to a comparator 21. The compartor 21 compares the operation signals comprising operating the ratios of the respective count signals per units time from registers 18, 19 sent to the arithmetic circuit to the values proportional to the tape running speeds at the fast feeding or rewinding of the tape and the count signals corresponding to the detection signals of the counter 25 and produced the output signal of the comparator 21.</p> |
