| 摘要 |
An off-board navigation application is provided that is configured to be stored in memory on a wireless portable device. The application comprises a menu hierarchy including a series of pages to be presented on a screen of the device. The pages include a category page having a list of categories. The categories each are associated with points of interest (POIs). The menu hierarchy includes an address page presenting address information related to a selected point of interest (POI). The address page includes a function option that directs the portable device to transmit wirelessly a navigation information request to a remote server. The menu hierarchy includes a navigation page configured to present navigation information that is received wirelessly by the portable device from the remote server in response to the navigation information request. Optionally, the application may further comprise a sub-category page presenting a list of POI names, wherein the address page presents address information in response to the selected POI. The function option may represent a GO option such that, when the GO option is selected, the application directs the portable device to transmit a navigation information request to the remote server. The navigation information request instructs the remote server to perform a route calculation from a present location of the portable device to the selected POI.
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