Method and device for the selective transmission of data

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.

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.

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.