MOBILE NAVIGATION DEVICE
First Claim
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1. A mobile navigation device, comprising:
- a satellite positioning module, for receiving a satellite navigation signal;
a dead reckoning module, for detecting a displacement and a rotation of the mobile navigation device; and
a processor coupled to the satellite positioning module and the dead reckoning module, for reading the satellite navigation signal, the displacement, and the rotation,wherein the mobile navigation device operates in a first mode and a second mode alternately, andin the first mode, the satellite positioning module is activated, the dead reckoning module is disabled, and the processor calculates a position coordinate according to the satellite navigation signal, andin the second mode, the satellite positioning module is disabled, the dead reckoning module is activated, and the processor updates the position coordinate according to the displacement and the rotation.
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Abstract
A mobile navigation device operating in a first mode and a second mode is provided. In the first mode, a satellite positioning module is activated while a dead reckoning module is disabled. A processor calculates the coordinates of the mobile navigation device based on the satellite navigation signals received by the satellite positioning module. In the second mode, the satellite positioning module is disabled while the dead reckoning module is activated, and the processor updates the coordinates based on displacements and rotations detected by the dead reckoning module.
32 Citations
18 Claims
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1. A mobile navigation device, comprising:
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a satellite positioning module, for receiving a satellite navigation signal; a dead reckoning module, for detecting a displacement and a rotation of the mobile navigation device; and a processor coupled to the satellite positioning module and the dead reckoning module, for reading the satellite navigation signal, the displacement, and the rotation, wherein the mobile navigation device operates in a first mode and a second mode alternately, and in the first mode, the satellite positioning module is activated, the dead reckoning module is disabled, and the processor calculates a position coordinate according to the satellite navigation signal, and in the second mode, the satellite positioning module is disabled, the dead reckoning module is activated, and the processor updates the position coordinate according to the displacement and the rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification