Car-mounted equipment
First Claim
1. A car-mounted equipment comprising:
- an ETC car-mounted unit which executes transmission and reception to and from an ETC on-the-road equipment to at least recognize that a vehicle is approaching or passing through a toll gate;
a navigation system which receives electromagnetic waves from a satellite to recognize the absolute position of said vehicle and communicates to a driver at least the position of said vehicle by displaying data or by producing voice data; and
a data bus which connects said ETC car-mounted unit and said navigation system together so that said ETC car mounted unit and said navigation system work integrally together to share data;
wherein said ETC car-mounted unit sends data to and receives data from said navigation system, and said navigation system sends data to and receives data from said ETC car-mounted unit through said data bus so as to participate in two-way data communication.
1 Assignment
0 Petitions
Accused Products
Abstract
A car-mounted equipment in which an ETC car-mounted unit and a navigation system work integrally together to share the data, making it possible to diversify the functions, to enhance the precision and to improve the reliability. The car-mounted equipment has an ETC car-mounted unit 11 which executes transmission and reception to and from an ETC on-the-road equipment to at least recognize that the vehicle is approaching or passing through a toll gate, a navigation system 12 which receives electromagnetic waves from a satellite to recognize the absolute position of the vehicle and informs the driver of at least the position of the vehicle by displaying data or by producing voice data, and a data bus 14 which connects the ETC car-mounted unit and the navigation system together so that they work integrally together, wherein the ETC car-mounted unit and the navigation system transmit and receive data to and from each other through the data bus.
57 Citations
9 Claims
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1. A car-mounted equipment comprising:
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an ETC car-mounted unit which executes transmission and reception to and from an ETC on-the-road equipment to at least recognize that a vehicle is approaching or passing through a toll gate;
a navigation system which receives electromagnetic waves from a satellite to recognize the absolute position of said vehicle and communicates to a driver at least the position of said vehicle by displaying data or by producing voice data; and
a data bus which connects said ETC car-mounted unit and said navigation system together so that said ETC car mounted unit and said navigation system work integrally together to share data;
wherein said ETC car-mounted unit sends data to and receives data from said navigation system, and said navigation system sends data to and receives data from said ETC car-mounted unit through said data bus so as to participate in two-way data communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
said ETC car-mounted unit transfers the entrance toll gate passage data of the entrance toll gate that is passed through already and the present balance data to said navigation system in response to said toll gate-approaching data; and
said navigation system has a toll table comprising a matrix for the exit toll gates and the entrance toll gates as a data base related to a plurality of toll gates, and, when said toll gate-approaching data indicates that an exit toll gate is approaching, calculates the toll due at said exit toll gate and a balance after the adjustment based on said entrance toll gate passage data, said toll table corresponding to said exit toll gate and said balance data.
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7. A car-mounted equipment according to claim 6, wherein said navigation system has a lane constitution comprising general lanes and ETC lanes on where the ETC on-the-road equipment is installed at every toll gate as a data base related to said plurality of toll gates, produces information to guide said vehicle to a general lane at said exit toll gate when the balance after the adjustment at said exit toll gate indicates a deficit, and produces information to guide said vehicle to an ETC lane at said exit toll gate when the balance after the adjustment at said exit toll gate indicates a surplus balance.
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8. A car-mounted equipment according to claim 6, wherein:
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said ETC car-mounted unit executes communication with the ETC on-the-road equipment at said exit toll gate and receives a lane constitution comprising general lanes and ETC lanes on where the ETC on-the-road equipment is installed at said exit toll gate, and transmits the lane constitution at said exit toll gate to said navigation system; and
said navigation system produces information to guide said vehicle to a general lane at said exit toll gate when the balance after the adjustment at said exit toll gate indicates a deficit, and produces information to guide said vehicle to an ETC lane at said exit toll gate when the balance after the adjustment at said exit toll gate indicates a surplus balance.
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9. A car-mounted equipment according to claim 1, wherein:
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said ETC car-mounted unit transmits the toll gate passage data to said navigation system when it is determined through the communication with the ETC on-the-road equipment that the vehicle has passed through a toll gate; and
said navigation system stores the names of the toll gates as a data base related to said plurality of toll gates, and informs the name of said toll gate by mapping based upon said toll gate passage data and said data base.
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Specification