| 摘要 |
<p>PURPOSE:To enable a reproducing with a magnetic head different from the recording track and to evade a re-detection of reading error by rotating a rotary head or a capastan by a rotation phase different from the rotation phase in the previous time. CONSTITUTION:The rotational speed and phase of a drum 3 are controlled by a magnetic reproducing device 1 in accordance with a drum pulse signal detected from the drum 3, and the magnetic heads 4A, 4B, 4C... are allowed to scan succesively on the recording track in the just-tracking state. At this time, a rotation control signal is outputted by a capstan servo circuit 12 so that the rotation phase of capstan motor 5 is deviated by 180 deg. to the rotation phase in the previous reproduction in accordance with an inversion control pulse. Consequently, at the time of reading/writing, the recording track is arranged at the opposite position to the magnetic head 4B by which the magnetic head reading error at just the preceding reproduction is detected, and also is reproduced again by a magnetic head 4F having the equal azimuth angle and free of abnormality.</p> |
