Patent ID: 7312749

Claim:
A multi-function electronic apparatus with positioning/orientation mechanism capable of operating in a forward mode and a backward mode, wherein the forward mode indicates from a departure point to an end point, and the backward mode indicates from the end point to the departure point, the electronic apparatus comprising: a position module for detecting a current coordinate and a plurality of coordinates along a track which the electronic apparatus traveled; a memory for recording the plurality of coordinates detected by the position module into a plurality of reference coordinates when the electronic apparatus is operating in a forward mode; an orientation module for comparing the current coordinate and the reference coordinate of the memory when the electronic apparatus is operating in a backward mode; a terrain module for providing a terrain data to record a number of undulant terrain counts along the track which the electronic apparatus traveled, if the electronic apparatus passes an undulant terrain, the terrain module increases the terrain data in the forward mode; and if the electronic apparatus passes the undulant terrain, the terrain module decreases the terrain data in the backward mode; and an orientation interface for providing a directional signal being utilized to indicate direction according the difference of the current coordinate and the reference coordinate.