In-vehicle navigation system
First Claim
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1. An in-vehicle navigation system comprising:
- a navigation device that includes a receiving unit configured to receive information, a storage unit configured to store the received information, and a guidance unit;
a battery voltage detector;
a temperature sensor; and
a control device comprising;
a determination unit configured to receive a voltage detection output from the battery voltage detector and a temperature output from the temperature sensor, the determination unit configured to determine whether the received voltage detection output is lower than a predetermined value, and whether the temperature output is lower than a predetermined value, anda start-up control unit configured to periodically start the navigation device based upon an output of the determination unit.
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Abstract
An in-vehicle navigation system includes a navigation device that further includes a receiving unit configured to receive information, a storage unit configured to store the received information, and a guidance unit. The navigation system further includes: a battery voltage detector; a temperature sensor; and a control device. The control device includes: a determination unit and a start-up control unit configured to periodically start the navigation device while the vehicle'"'"'s engine is off, or cancel start-up of the navigation device based upon the detected battery voltage, a predetermined voltage level, and current and/or predicted temperatures.
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Citations
3 Claims
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1. An in-vehicle navigation system comprising:
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a navigation device that includes a receiving unit configured to receive information, a storage unit configured to store the received information, and a guidance unit; a battery voltage detector; a temperature sensor; and a control device comprising; a determination unit configured to receive a voltage detection output from the battery voltage detector and a temperature output from the temperature sensor, the determination unit configured to determine whether the received voltage detection output is lower than a predetermined value, and whether the temperature output is lower than a predetermined value, and a start-up control unit configured to periodically start the navigation device based upon an output of the determination unit.
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2. An in-vehicle navigation system comprising:
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a navigation device that includes; a receiving unit configured to receive information; at least one storage unit configured to store the received information and seasonable temperature information; a current position detection unit; and a guidance unit configured to output status of the received information; and a control device that includes; a determination unit configured to receive stored temperature information from the navigation device and generate a determination result of whether or not the current geographic location of the navigation system, detected by the current position detection unit, is in an area where a predicted temperature is lower than a predetermined temperature; and a start-up control unit configured to receive the determination result and periodically start the navigation device while the vehicle in which the in-vehicle navigation system is installed is parked in an engine-off state; wherein the control device is configured to cancel start-up of the navigation device if a current geographic location of the navigation system is in an area where a predicted temperature is lower than the predetermined temperature. - View Dependent Claims (3)
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Specification