| 摘要 |
In a road navigation method, a user's current location is transmitted from the user's handheld electronic device to a remote server according to the user's instruction or via a bidirectional transmission between the handheld electronic device and the remote server; and the remote server generates a reference electronic map from a linked electronic-map website or a built-in electronic map based on the user's current location, and transmits the reference electronic map to the user's handheld electronic device for guiding the user on a road. In this manner, the memory capacity of the handheld electronic device is not occupied by an electronic map, and the user is allowed to timely access to a worldwide electronic map for road navigation without the need of using specific software to analyze the electronic map.
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