Vehicle navigation system and method for selecting a route according to fuel consumption
First Claim
1. A ground vehicle navigation system for selecting a route according to fuel consumption, comprising:
- an input device for selecting a destination;
an antenna for receiving signals from GPS satellites;
a frequency converter for converting signals received by the antenna into low frequency signals;
a signal processor for processing the low frequency signals into computer-recognizable signals;
a memory for storing data representative of local area routes and altitude information for the routes; and
a controller responsive to the computer-recognizable signalsfor determining a current vehicle position and alternative routes from the current vehicle position to the destination, andfor selecting from the alternative routes a preferred route requiring the least fuel consumption in view of the altitude information.
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Accused Products
Abstract
A vehicle navigation system and method of selecting a route for vehicle travel according to fuel consumption. The system includes an input device for selecting a destination, an antenna for receiving satellite signals and/or signals related to traffic situation, a memory, and a controller, such as a microcomputer, for determining a current vehicle position and alternative routes from the current vehicle position to the destination and for selecting from the alternative routes, according to altitude information for the routes and the traffic situation, a preferred route requiring the least fuel consumption. The method includes the steps of determining the current vehicle position based on signals received from satellites, determining the routes from the current position to the destination, and selecting from the routes the preferred route requiring the least amount of fuel consumption.
180 Citations
20 Claims
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1. A ground vehicle navigation system for selecting a route according to fuel consumption, comprising:
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an input device for selecting a destination; an antenna for receiving signals from GPS satellites; a frequency converter for converting signals received by the antenna into low frequency signals; a signal processor for processing the low frequency signals into computer-recognizable signals; a memory for storing data representative of local area routes and altitude information for the routes; and a controller responsive to the computer-recognizable signals for determining a current vehicle position and alternative routes from the current vehicle position to the destination, and for selecting from the alternative routes a preferred route requiring the least fuel consumption in view of the altitude information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A ground vehicle navigation method for selecting a route according to fuel consumption, comprising the steps of:
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selecting a destination; receiving signals from GPS satellites; determining a current vehicle position based on the signals received from the satellites; determining alternative routes from the current vehicle position to the destination; calculating fuel consumption required for each of the alternative routes based upon change of altitude of each of the alternative routes; selecting from the alternative routes a preferred route requiring the least amount of fuel consumption; and displaying the preferred route. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification