| 摘要 |
<p>A touch sensor includes a touch pad; and a circuit configured to detect radiated energy from the touch pad. An impedance connected in series with the touch pad in the circuit, and the impedance is selected to approximately match the impedance of a human finger in proximity to the touch pad. The sensor does not require floating power supplies and ground references, and does not rely upon a receiver in the circuit to detect radiated energy.</p> |
