Vehicle information system
First Claim
1. A method for vehicle guidance comprising:
- providing a stored map of a road network in a non-volatile storage in a vehicle;
receiving at the vehicle from a server a planned route to a destination location;
storing the planned route at the vehicle;
providing instructions to an operator of the vehicle according to the stored planned route;
tracking a location of the vehicle, including detecting whether the vehicle has deviated from the planned route; and
if the vehicle is detected to have deviated from the planned route, planning a new route to the destination location using the stored map.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle information system which includes an in-vehicle system 105 and a centralized server system 120. The in-vehicle system communicates with the server system using a wireless communication link 110, such as over a cellular telephone system. A position system, such as a set of GPS satellites 140, provides positioning signals that are used by the in-vehicle systems, and optionally by the centralized server system to increase the accuracy of position estimates. In one version of the system, an operator specifies a destination to an in-vehicle system which validates the destination. The in-vehicle system transmits specification of the destination to a server system 125 at the centralized server. The server system computes a route to the destination and transmits the computed route to the in-vehicle system. The in-vehicle system guides the operator along the route. If the in-vehicle system detects that the vehicle has deviated from the planned route, it replans a new route to the destination using an in-vehicle map database.
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Citations
13 Claims
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1. A method for vehicle guidance comprising:
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providing a stored map of a road network in a non-volatile storage in a vehicle;
receiving at the vehicle from a server a planned route to a destination location;
storing the planned route at the vehicle;
providing instructions to an operator of the vehicle according to the stored planned route;
tracking a location of the vehicle, including detecting whether the vehicle has deviated from the planned route; and
if the vehicle is detected to have deviated from the planned route, planning a new route to the destination location using the stored map. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Software recorded on a computer readable medium for causing an in-vehicle computer to perform the functions comprising:
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receiving at a vehicle a planned route to a destination location from a server;
storing the planned route;
providing instructions to an operator of the vehicle according to the stored planned route;
tracking a location of the vehicle;
detecting whether the vehicle has deviated from the planned route; and
if the vehicle is detected to have deviated from the planned route, planning a new route to the destination location.
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13. A vehicle navigation system comprising:
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a server, including a route planner;
a plurality of in-vehicle systems, each including storage for an in-vehicle map database, and storage for a planned route;
a wireless communication system for passing data between the server and each of the in-vehicle systems;
wherein each of the in-vehicle systems includes a guidance system for accepting a destination specification, validating the destination specification using the in-vehicle map database, sending the validated destination specification to the server over the wireless communication system, receiving a planned route to the destination over the wireless communication system, and guiding the operator to the destination; and
wherein each of the in-vehicle systems further includes an autonomous route replanning system for detecting whether the vehicle has deviated from the planned route, and if the vehicle is detected to have deviated from the planned route, planning a new route to the destination using the in-vehicle map database.
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Specification