Satellite signal receiver
First Claim
1. A satellite signal receiver comprising:
- a satellite signal reception unit for calculating a current position of the satellite signal receiver using an electric wave from a satellite, in response to a positioning request;
a timer for clocking an elapsed time in calculating the current position of the satellite signal receiver; and
power-on/off controlling means for controlling an on/off state of power supplied to both the satellite signal reception unit and the timer on the basis of information including the positioning request, the elapsed time clocked by the timer, and a condition under which the satellite signal reception unit receives the signal from the satellite.
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Accused Products
Abstract
A satellite signal receiver includes a satellite signal reception unit, timer, and power-on/off controlling element. The satellite signal reception unit calculates a current position of the satellite signal receiver using an electric wave from a satellite, in response to a positioning request. The timer is used to clock an elapsed time in calculating the current position of this receiver. The power-on/off controlling element controls an on/off state of power supplied to both the satellite signal reception unit and the timer on the basis of information including the positioning request, the elapsed time clocked by the timer, and a reception condition of the satellite signal reception unit. Accordingly, a period of time for supplying the power is automatically turned on/off to be shortened in cases the positioning is impossible, thus the power being saved.
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Citations
16 Claims
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1. A satellite signal receiver comprising:
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a satellite signal reception unit for calculating a current position of the satellite signal receiver using an electric wave from a satellite, in response to a positioning request;
a timer for clocking an elapsed time in calculating the current position of the satellite signal receiver; and
power-on/off controlling means for controlling an on/off state of power supplied to both the satellite signal reception unit and the timer on the basis of information including the positioning request, the elapsed time clocked by the timer, and a condition under which the satellite signal reception unit receives the signal from the satellite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A satellite signal receiver comprising:
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a satellite signal reception unit for intermittently calculating a current position of the satellite signal receiver at adjustable intermittent intervals by using an electric wave from a satellite;
a timer for clocking an elapsed time every time when the current position of the satellite signal receiver is calculated; and
power-on/off controlling means for intermittently controlling an on/off state of power supplied to the satellite signal reception unit on the basis of information including the elapsed time clocked by the timer every time when the current position of the satellite signal receiver is calculated. - View Dependent Claims (13, 14, 15, 16)
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Specification