| 摘要 |
<p>PURPOSE:To generate no noise on a picture plane by sampling a tracking error signal by the pulse formed by a pulse forming means, holding a sampling voltage and executing a tracking control by using the holding voltage thereof. CONSTITUTION:The head A' having the same azimuth as that of a head A is arranged at the position adjacent to a head B and at the time of the reproduction at doubling speed the head scans on the tape repeatedly in the order of the head A head A' head A head A' on each one field to compose the device. And the pilot signal for tracking is processed, the center of the error voltage in a saw tooth like waveform obtd. from a comparison circuit is subjected to sampling and holding and by using this holding voltage as the control signal executing a tape transfer the noise of a reproducing image picture can be driven to the upper and lower parts of the picture plane at the double speed field reproducing time. The reproducing image hardly generating a noise on the picture plane is thus obtd.</p> |
