| 摘要 |
<p>PURPOSE:To obtain an information recording magnetic tape where copying of the information can be prevented, and a reproducer. CONSTITUTION:Information signals are recorded on forward tracks T1, T2 in normal recording reproduction by travelling in the backward direction, and information signals are recorded on backward tracks T3, T4 in normal recording and reproduction by travelling in the forward direction. The forward tracks T1, T2 are scanned in the backward direction and the backward tracks T3, T4 are scanned in the forward direction at the time of reproduction.</p> |
