| 摘要 |
<p>A pair of bimorph leaves (BM1, BM2) are mounted on a rotary drum (DR) and each bimorph leaf (BM1, BM2) includes four reproducing heads (P(A1),...P(D2)). A pair of recording head means, each of said means including two recording heads (R(A),...R(D)), are provided so that four record heads are used to form twelve tracks (A1,...) during three times of rotation of the rotary drum (DR) in one field period in a case of PAL television signal recording mode. The eight reproducing heads (P(A1),...P(D2)) are used to scan said twelve tracks so that the twelve tracks can be scanned within two times of rotation of the rotary drum (DR). In a case of recording and reproducing an NTSC television signal, the rotary drum (DR) rotates two times and a half during one field period of the NTSC signal so that the four record heads form ten tracks per field period. Eight reproducing heads are also used to scan the ten tracks in a same manner. Such arrangement of the record and reproducing heads makes a moving distance of the pair of bimorph leaves (BM1, BM2) reduced in a reproducing mode, the tape speed of which is different from that of the recording mode.</p> |
