| 摘要 |
<p>In a magnetic tape recorder in which information is recorded on a plurality of longitudinal tracks (20-30) running parallel to the length of the tape (16), a technique is disclosed for optimizing the positioning of a pair of magnetic heads (10, 12) for simultaneously reading information recorded on a pair of spaced tracks on the tape. The pair of spaced magnetic heads (10, 12) are mounted (14) for simultaneous movement across the width of the tape in small uniform steps. The output of each magnetic head (10, 12) is monitored (34-46) as the heads are moved laterally across two reference tracks (20R, 26R) at the beginning of the magnetic tape (16). An optimal position for both heads (10, 12) is determined as the mean position of the region of travel during which the amplitude of the output signal from both heads (10, 12) exceeds a predetermined reference value. This technique is also applicable to magnetic disc drives.</p> |
