Method for taking into account supplementary traffic information in an onboard travel control system
First Claim
1. A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, the onboard travel control system including an internal digital road map having route segments, comprising the steps of:
- transferring a point of origin and a destination from the onboard travel control system to a central computer of a central office, the onboard travel control system having information about location codes;
calculating, via the central computer, a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
transmitting the route plan from the central computer to the onboard travel control system; and
modifying, in the internal digital road map, the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control system.
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Accused Products
Abstract
A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, containing an internal digital road map, by transferring a point of origin and destination to a central computer and transmitting, to the onboard travel control system of the motor vehicle, a route plan drawn up in the central computer, taking into account the supplementary traffic information is achieved, at low data transmission rates and maintaining short transmission times, by providing the internal digital road map of the onboard travel control system with information about location codes; by transmitting the route plan by specifying route segments that are defined by the location codes and lie between the point of origin and the destination; and by modifying the transmitted route segments in the internal digital road map of the travel control system so that they are taken into account as a higher priority than non-transmitted route segments during the subsequent route selection carried out in the onboard travel control system.
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Citations
24 Claims
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1. A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, the onboard travel control system including an internal digital road map having route segments, comprising the steps of:
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transferring a point of origin and a destination from the onboard travel control system to a central computer of a central office, the onboard travel control system having information about location codes;
calculating, via the central computer, a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
transmitting the route plan from the central computer to the onboard travel control system; and
modifying, in the internal digital road map, the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
wherein the step of calculating includes the step of encoding the route segments, and wherein the step of transmitting includes the step of transmitting the encoded route segments via short message system (SMS) transmission. -
6. The method according to claim 1, wherein the subsequent route selection being carried out by the onboard travel control system uses both the transmitted route segments as well as the route segments in the internal digital road map during the subsequent route selection.
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7. The method according to claim 1, further comprising the step of filling any gaps between the transmitted route segments by the onboard travel control system.
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8. The method according to claim 1, wherein:
the route plan is too large, then it is divided up and the transmission is in the form of multiple route segments.
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9. A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, the onboard travel control system including an internal digital road map having route segments, comprising the steps of:
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transferring a point of origin and a destination from the onboard travel control system to a central computer of a central office, the onboard travel control system having information about location codes;
calculating, via the central computer, a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
transmitting the route plan from the central computer to the onboard travel control system;
modifying, in the internal digital road map, the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control system; and
further comprising the step of;
if a particular item of information relating to a traffic disturbance for a particular route segment is received by the onboard travel control system, then canceling a modification of a particular route segment by the onboard travel control system.
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10. A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, the onboard travel control system including an internal digital road map having route segments, comprising the steps of:
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transferring a point of origin and a destination from the onboard travel control system to a central computer of a central office, the onboard travel control system having information about location codes;
calculating, via the central computer, a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
transmitting the route plan from the central computer to the onboard travel control system;
modifying, in the internal digital road map, the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control system; and
further comprising the step of;
if the destination is reached, then canceling modifications of the transmitted route segments.
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11. A method for taking into account supplementary traffic information for operating an onboard travel control system of a motor vehicle, the onboard travel control system including an internal digital road map having route segments, comprising the steps of:
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transferring a point of origin and a destination from the onboard travel control system to a central computer of a central office, the onboard travel control system having information about location codes;
calculating, via the central computer, a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
transmitting the route plan from the central computer to the onboard travel control system;
modifying, in the internal digital road map, the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control system; and
further comprising the step of;
if at least one of a particular time variation and a particular position variation exceed a particular threshold, then automatically revising the route plan via the central office. - View Dependent Claims (12)
if the revised route plan is transmitted from the central office, then canceling modifications to the previously transmitted route segments.
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13. A system for operating an onboard travel control device in a motor vehicle, the system comprising:
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the onboard travel control device includes an internal digital road map having route segments contained therein;
means for taking into account supplementary traffic information for operating the onboard travel control device in the motor vehicle;
means for transferring a point of origin and a destination from the onboard travel control device to a central computer of a central office, the onboard travel control device having information about location codes;
the central computer calculates a route plan that takes into account the supplementary traffic information, the route plan including route segments that are defined by the location codes, the route segments being disposed between the point of origin and the destination;
means for transmitting the route plan from the central computer to the onboard travel control device; and
wherein the internal digital road map is modified based upon the transmitted route segments so that the transmitted route segments are assigned a higher priority over the route segments in the internal digital road map during subsequent route selection, the subsequent route selection being carried out by the onboard travel control device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification