| 摘要 |
<p>PURPOSE:To provide the magnetic recording and reproducing device which can make a track pitch narrow and prevents the number of heads from being increased even without improving mechanical accuracy shift and tracking shift. CONSTITUTION:Since one track is reproduced by providing an overlap area with two heads (A1 and A2 or B1 and B2,) the track pitch can be made narrow even without so much improving mechanical accuracy shift and tracking shift. Further, since offset is provided just for the amount of the track pitch in a standard mode between the heads A1 and B2 and in a long time mode between the heads A2 and B2 (or A1 and B1,) the heads can be shared in the standard mode and the long time mode, the increase of heads in the long time mode is canceled, and the number of heads is not increased.</p> |
