| 摘要 |
<p>In a magnetic tape apparatus, the impulses derived from the rotations of a spool (1) are counted in order to display (14) the winding stage of the tape. The ratio of the number of revolutions (12) of spools (1, 2) to that of the total winding (11) is determined by means of a trial run. The counting procedure (12) is linearized (13) by means of these values. </p> |
