| 摘要 |
A cue signal detection circuit including a CTL head (11) for reading a reproduction control signal recorded on a magnetic tape (101), an amplification circuit (12) for converting a reproduction control signal into a digital signal, a filter unit (13) for converting a digital signal into an analog voltage corresponding to a duty ratio of the signal, a frequency-dividing circuit (14) for generating a timing signal in accordance with the operation of a capstan motor (102), and an analog-to-digital conversion circuit (15) and a determination circuit (16) for taking in a voltage value of a reproduction control signal converted into an analog voltage in response to a timing signal to detect a cue signal from among reproduction control signals based on the taken in voltage value. <IMAGE> |
