Route Guidance System
First Claim
1. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises an audio emitter and a visual display unit adapted to provide audio and visual instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is transmitted by the central route advisory system to the in-vehicle device in response to a route request from the user to a human operator in the central route advisory system to a specified destination.
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Accused Products
Abstract
A route guidance system comprising an in-vehicle device (10) and a central route advisory system (30) in which the in-vehicle device comprises an audio emitter (18) and a visual display unit (24, 26) adapted to provide audio and visual instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is transmitted by the central route advisory system (30) to the in-vehicle device (10) in response to a route request from the user to a human operator in the central route advisory system (30) to a specified destination.
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Citations
28 Claims
- 1. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises an audio emitter and a visual display unit adapted to provide audio and visual instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is transmitted by the central route advisory system to the in-vehicle device in response to a route request from the user to a human operator in the central route advisory system to a specified destination.
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17. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises units adapted to provide instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is determined by the central route advisory system using real-time historical traffic data acquired from monitored routes together with archive data acquired from non-monitored routes and transmitted by the central route advisory system to the in-vehicle device in response to a route request from the user to a human operator in the central route advisory system to a specified destination.
- 18. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises units adapted to provide instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is calculated by the central route advisory system using a traffic forecasting model and transmitted by the central route advisory system to the in-vehicle device in response to a route request from the user to a human operator in the central route advisory system to a specified destination.
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21. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises units adapted to provide instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is calculated by the central route advisory system taking into account the previous travelling direction of the vehicle, in response to a route request from the user to a human operator in the central route advisory system to a specified destination, and the optimal route is transmitted by the central route advisory system to the in-vehicle device.
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22. A route guidance system comprising an in-vehicle device and a central route advisory system in which the in-vehicle device comprises units adapted to provide instructions to a user to perform manoeuvres required to complete an optimal route, wherein the optimal route is calculated by the central route advisory system taking into account the previous travelling direction of the vehicle, in response to a route request from the user to a human operator in the central route advisory system to a specified destination, and the optimal route is transmitted by the central route advisory system to the in-vehicle device.
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23. A route guidance method comprising the steps of:
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(a) receiving a call from a user'"'"'s in-vehicle device indicating the user'"'"'s desired destination;
(b) entering the user'"'"'s desired destination into a route-guidance system;
(c) determining the current location of the user'"'"'s vehicle;
(d) determining the potential routes to the desired destination;
(e) ascertaining traffic conditions along the potential routes;
(f) determining the optimal route to the desired destination using the distances of the potential routes and the traffic conditions along the routes;
(g) establishing route key-points along the optimal route;
(h) associating flags with the route key-points;
(i) transmitting the route key-points and flags to the user'"'"'s in-vehicle device; and
(j) providing visual and audio instructions to the user as the user'"'"'s vehicle approaches the route key-points along the optimal route.
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24. A route guidance method comprising the steps of:
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(a) receiving a call from a user'"'"'s in-vehicle device indicating the user'"'"'s desired destination;
(b) determining the current location of the user'"'"'s vehicle;
(c) entering the user'"'"'s desired destination into a route-guidance system;
(d) determining the potential routes to the desired destination;
(e) ascertaining traffic conditions along the potential routes;
(f) determining the optimal route to the desired destination using the distances of the potential routes and the traffic conditions along the routes;
(g) establishing route key-points along the optimal route;
(h) associating flags with the route key-points;
(i) transmitting the route key-points and flags to the user'"'"'s in-vehicle device; and
(j) providing instructions to the user as the user'"'"'s vehicle approaches the route key-points along the optimal route.
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25. A route guidance method comprising the steps of:
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(a) receiving a call from a user'"'"'s in-vehicle device indicating the user'"'"'s desired destination;
(b) entering the user'"'"'s desired destination into a route-guidance system;
(c) determining the current location of the user'"'"'s vehicle from a dual multi-frequency tone transmission from the user'"'"'s in-vehicle device;
(d) determining the potential routes to the desired destination;
(e) ascertaining traffic conditions along the potential routes;
(f) determining the optimal route to the desired destination using the distances of the potential routes and the traffic conditions along the routes;
(g) establishing route key-points along the optimal route;
(h) associating flags with the route key-points;
(i) transmitting the route key-points and flags to the user'"'"'s in-vehicle device; and
(j) providing instructions to the user as the user'"'"'s vehicle approaches the route key-points along the optimal route. - View Dependent Claims (26)
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27. A route guidance method comprising the steps of:
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(a) receiving a call from a user'"'"'s in-vehicle device indicating the user'"'"'s desired destination;
(b) entering the user'"'"'s desired destination into a route-guidance system;
(c) determining the current location of the user'"'"'s vehicle;
(d) determining the potential routes to the desired destination;
(e) ascertaining traffic conditions along the potential routes;
(f) determining the optimal route to the desired destination using the distances of the potential routes and the traffic conditions along the routes;
(g) establishing route key-points along the optimal route;
(h) associating flags with the route key-points;
(i) transmitting the route key-points and flags to the user'"'"'s in-vehicle device;
(j) using a route convergence model to determine the direction in which the user'"'"'s vehicle is travelling once the vehicle commences the journey along the optimal route; and
(k) providing visual and audio instructions to the user as the user'"'"'s vehicle approaches the route key-points along the optimal route. - View Dependent Claims (28)
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Specification