| 摘要 |
<p>The system controls all servo systems for a magnetic tape recording and reproducing apparatus, including a capstan servo (34), a reel servo (32), a scanning drum servo (36) and an automatic scan tracking servo (44) which controls the position of reproduced heads carried by the scanning drum which are of the type which can be transversely moved relative to the longitudinal direction of recorded tracks to accurately follow the tracks during special effect reproducing modes, such as slow motion, stop motion and fast motion reproducing. The microprocessor (30) controlled servo system has unique and powerful functional capabilities which enable it to provide reliable precise asynchronous reproducing so that precisely accurate time compression and expansion can be carried out without performing any editing of the recorded material.</p> |
