Method and device for the selective transmission of data

1. A method for selectively transmitting data from a transmitter to a receiver in a non-railbound land vehicle, wherein the method at the receiver end comprises:

selecting at least one geographical region,

wherein a geographical region corresponds to a limited area on a map,

transmitting a request to the transmitter to transmit data relating to the at least one selected geographical region,

receiving a data transmission initiated by the transmitter in response to the request,

characterized in that a size of the limited area which corresponds to a geographical region and for which data are transmitted is adjustable, is automatically varied on the basis of a speed of the land vehicle, and/or is variable along a planned route, wherein regions at the start and end of a route, at planned intermediate stops or at intersections along the route are larger than on sections of the route which are driven through without stopping.

2. The method as claimed in claim 1 , characterized in that the receiver transmits, in the request to the transmitter, a unique identification which is used by the transmitter to identify the receiver in order to transmit the requested data to the receiver.

3. The method as claimed in claim 1 , characterized in that the transmission of the request corresponds to the negotiation of a data subscription for the selected geographical region, and in that the receiving comprises receiving one or more data transmissions addressed to the identification of the receiver, which is carried out periodically or in an event-controlled manner until the subscription is ended by the receiver.

4. The method as claimed in claim 1 , characterized in that the at least one geographical region is selected in such a manner that it includes a current position of the land vehicle.

5. The method as claimed in claim 1 , characterized in that the at least one geographical region is selected in such a manner that it includes planned future positions of the land vehicle.

6. The method as claimed in claim 1 , characterized in that the request from the receiver to the transmitter and the data transmission from the transmitter to the receiver are effected using at least one wireless interface.

7. The method as claimed in claim 1 , characterized in that geographical regions are predetermined or predefined, in that the predetermined or predefined regions can be identified at the transmitter end and at the receiver end by means of unique identifiers, and in that the at least one region is identified by the identifier in the request from the receiver and/or in the data transmission by the transmitter.

8. The method as claimed in claim 1 , characterized in that the data relating to the at least one selected geographical region contain information relating to a traffic route infrastructure in the geographical region, which information is valid for a limited period.

9. The method as claimed in claim 8 , characterized in that the receiver transmits, in the request to the transmitter, a unique identification which is used by the transmitter to identify the receiver in order to transmit the requested data to the receiver.

10. The method as claimed in claim 8 , characterized in that the transmission of the request corresponds to the negotiation of a data subscription for the selected geographical region, and in that the receiving comprises receiving one or more data transmissions addressed to the identification of the receiver ( 500 ), which is carried out periodically or in an event-controlled manner until the subscription is ended by the receiver ( 500 ).

11. The method as claimed in claim 8 , characterized in that the at least one geographical region is selected in such a manner that it includes a current position of the land vehicle.

12. The method as claimed in claim 8 , characterized in that the at least one geographical region is selected in such a manner that it includes planned future positions of the land vehicle.

13. The method as claimed in claim 8 , characterized in that the request from the receiver to the transmitter and the data transmission from the transmitter to the receiver are effected using at least one wireless interface.

14. The method as claimed in claim 8 , characterized in that geographical regions are predetermined or predefined, in that the predetermined or predefined regions can be identified at the transmitter end and at the receiver end by means of unique identifiers, and in that the at least one region is identified by the identifier in the request from the receiver and/or in the data transmission by the transmitter.

15. A method for selectively transmitting data from a transmitter to a receiver in a non-railbound land vehicle, wherein the method at the transmitter end comprises:

receiving a request from the receiver to transmit data relating to at least one selected geographical region to the receiver, wherein a geographical region corresponds to a limited area on a map,

extracting data relating to the at least one geographical region from a database,

initiating a data transmission to the receiver

in response to the request, wherein a size of the limited area which corresponds to a geographical region and for which data are transmitted is adjustable, is automatically varied on the basis of a speed of the land vehicle, and/or is variable along a planned route, wherein regions at the start and end of a route, at planned intermediate stops or at intersections along the route are larger than on sections of the route which are driven through without stopping.

16. A transmitter-end apparatus having at least one wireless interface, a computer and a database which are communicatively connected to one another by means of one or more bus systems, characterized in that the computer stores program instructions which, when executed by the computer, carry out a method for selectively transmitting data from a transmitter to a receiver in a non-railbound land vehicle, wherein the method at the transmitter end comprises:

receiving a request from the receiver to transmit data relating to at least one selected geographical region to the receiver, wherein a geographical region corresponds to a limited area on a map,

extracting data relating to the at least one geographical region from a database,

initiating a data transmission to the receiver in response to the request, wherein a size of the limited area which corresponds to a geographical region and for which data are transmitted is adjustable, is automatically varied on the basis of a speed of the land vehicle, and/or is variable along a planned route, wherein regions at the start and end of a route, at planned intermediate stops or at intersections along the route are larger than on sections of the route which are driven through without stopping.

17. A receiver-end apparatus having at least one wireless interface, a computer and a device for determining a current position on the earth's surface which are communicatively connected to one another by means of one or more bus systems, characterized in that the device for determining a current position on the earth's surface or the computer stores program instructions which, when executed by the device for determining a current position on the earth's surface or the computer, carry out a method for selectively transmitting data from a transmitter to a receiver in a non-railbound land vehicle, wherein the method at the receiver end comprises:

selecting at least one geographical region,

wherein a geographical region corresponds to a limited area on a map,

transmitting a request to the transmitter to transmit data relating to the at least one selected geographical region,

receiving a data transmission initiated by the transmitter in response to the request,

characterized in that a size of the limited area which corresponds to a geographical region and for which data are transmitted is adjustable, is automatically varied on the basis of a speed of the land vehicle, and/or is variable along a planned route, wherein regions at the start and end of a route, at planned intermediate stops or at intersections along the route are larger than on sections of the route which are driven through without stopping.

18. A non-railbound land vehicle having a receiver-end apparatus having at least one wireless interface, a computer and a device for determining a current position on the earth's surface which are communicatively connected to one another by means of one or more bus systems, characterized in that the device for determining a current position on the earth's surface or the computer stores program instructions which, when executed by the device for determining a current position on the earth's surface or the computer, carry out a method for selectively transmitting data from a transmitter to a receiver in the non-railbound land vehicle, wherein the method at the receiver end comprises:

selecting at least one geographical region,

wherein a geographical region corresponds to a limited area on a map,

transmitting a request to the transmitter to transmit data relating to the at least one selected geographical region,

receiving a data transmission initiated by the transmitter in response to the request,

characterized in that a size of the limited area which corresponds to a geographical region and for which data are transmitted is adjustable, is automatically varied on the basis of a speed of the land vehicle, and/or is variable along a planned route, wherein regions at the start and end of a route, at planned intermediate stops or at intersections along the route are larger than on sections of the route which are driven through without stopping.