| 摘要 |
A USB data-audio signal multiplexing transmission line includes a USB connector and an audio connector on two ends and a transmission wire for connecting a play device to another external data storage device or processing device to make data exchange or output audio signal. An audio connecting plug set on the audio connector is divided into four electric independent segments which are two audio signal connecting ends, an audio ground connecting end and a control signal connecting end in turn. The two audio signal connecting ends of the audio connecting plug are connected to the two data signal connecting ends of the USB connecting plug, the ground connecting end of the audio connecting plug is connected to a ground connecting end of the USB connecting plug, the control signal end of the audio connecting plug is connected to a power end of the USB connecting plug.
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