| 摘要 |
<p>An earphone jack (20) defines a connecting hole (202) for receiving an earphone plug (204). The earphone jack (20) includes a left channel audio terminal (24) for receiving a left audio channel signal, a right channel audio terminal (22) for receiving a right audio channel signal, a first detecting terminal (26), a second detecting terminal (28), and an anti-interference unit (29) connected between the first detecting terminal (26) and the second detecting terminal (28). When the earphone plug (204) is not received in the connecting hole (202), the first detecting terminal (26) is electrically connected to the right channel audio terminal (22), the second detecting terminal (28) is electrically connected to the left channel audio terminal (24), the anti-interference unit (29) prevents the left audio channel signal from being transmitted to the right channel audio terminal (22) and prevents the right audio channel signal from being transmitted to the left channel audio terminal (24); and the first detecting terminal (26) outputs an electrical signal for indicating that the earphone plug (204) is not plugged into the earphone jack (20).
</p> |
