| 摘要 |
A portable navigation device (PND) is disclosed comprising processing means, a graphical display, memory, map data stored in said memory, user-input means, and signal reception means for receiving one or more wireless signals by means of which the processor can determine a present location of the device and in conjunction with user input desired destination information, and perform route calculation and subsequent navigation functions, such being performed by software installed on the device. The PND is additionally provided with one or more wireless signal transceivers capable of establishing wireless communications with third party devices or systems having corresponding signal transceivers. In accordance with the invention, the software on said PND is adapted to establish a wireless communication with a third party device being a node having a corresponding wireless signal transceiver and being part of a vehicle controller area network (CAN) consisting of a plurality of nodes, each of said nodes having functionality represented by one or more signals distributed around said controller area network and received by at least said third party device, and further characterized in that said PND software includes one or more routines specific to the functionality of one or more of said nodes so as to effectively communicate with said node and utilize its functionality.
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