| 摘要 |
<p>The recording media markings consist of very thin conducting surface elements on an insulating card. A capacitative marking element (1) in the scanning device receives by capacitative coupling, electric energy from an h.f. supplied transmitter electrode (4), transports it galvanically to a receiving electrode (5) to which it delivers it through capacitive coupling. The alternating voltage thus generated at the receiving electrode (5) is evaluated.</p> |
