| 摘要 |
A vehicle navigation apparatus with multimedia facilities has two sets of audio output channels 27, 28. One set of channels, 27, is connected to an independent loudspeaker set 26, and the other set of channels, 28, is connected to a vehicle stereo system 31, 3. Users can get navigation information from the independent speaker 26 or from the better quality car stereo speakers 32. The connection to the car stereo may be by a radio link (fig.3). The control unit 22 may mute audio sources, within the navigation unit at least, while playing navigation instructions.
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