| 摘要 |
<p>PURPOSE:To provide a tracking device to remove a factor to cause the jitter of a reproduced video in respect of the improvement of the ATF tracking servo of an 8mm VTR. CONSTITUTION:The tracking device is constituted so as to be provided with a sample-and-hold circuit consisting of an analog switch 2 controlled by a head switching pulse signal 10 and a holding capacitor 3 and an error amplifier 4 to amplify the output of the sample-and-hold circuit in a tracking servo loop.</p> |
