| 摘要 |
<p>PHN 9760 8-l0-1980 "Device for locating a desired information track". For locating a desired information track on an information carrier, after an information transducer has been passed over the information tracks on the carrier in the transverse direction by means of a starting pulse, a control signal is derived from the alternating voltage thus obtained, which signal keeps the relative velocity of the transducer relative to the information tracks constant.</p> |
