Robert Boschgmbh

Guido Mueller

Ulrich Kersken

Thomas Fabian

Michael Laedke

Stefan Noll

Andreas Vogel

Guido Stuebner

Axel Varchmin

Holger Hoeling

Wolfgang Wunderlich

Frank Moormann

Maylin Wartenberg

Irina Matschke

Stefan Pirklbauer

A method for creating a directory of road sections of a digital road map for a navigation system is provided. Furthermore, a method for ascertaining all road sections within a search area is provided. Moreover, a computer program for performing a method for creating a directory of road sections and a method for ascertaining all road sections within a search area is provided.

Method for creating a directory of road sections, method for ascertaining all road sections within a search area, and computer program

A method is provided for determining a route for a route guidance, in which a first route is determined on the assumption of a first traffic situation, a second route is determined on the assumption of a second traffic situation, the second route being compared to the first route, and a route change difference being determined from the comparison, where the two routes are offered to a user for the selection for an additional route guidance only if the route change difference exceeds a first threshold value. A device for carrying out the method is also described.

Method for route determination and device for it

A method for ascertaining routes in a route network is provided, in which an optimal route to a target of a certain category can be determined. A route is calculated from a point of origin to an optimal target point from a plurality of spatially separated target points that are allocated to at least one directed segment and/or to at least one node. The method includes defining the target points from entries of addresses, map targets, target memory entries given by an index of a given category, such as, for instance, post office, gas stations. The respective route to the target point is optimized as a sequence of the directed segments having nodes situated between the directed segments such that the sum of all resistances of the sequence to the respective target point becomes a minimum. A list of the respective routes to the respective target point is then drawn up.

Method and navigation system for determining routes to a plurality of final destination points

A method is provided for displaying at least one hierarchically structured list having at least two levels, and a display unit for such a method is also provided, in which the user is offered an optimum overview in the display of hierarchically structured lists having at least two levels. In the display of one or more of the subordinate elements of the list, the respective superordinate element of the list associated with the subordinate element of the list is also always displayed.

Method for displaying a hierarchically structure list and associated display unit

A method for automatically calculating optimum routes in a traffic-route network is provided, taking into consideration at least one set, fixed route section, where the traffic-route network is described by segments for traffic-route sections, weighted with a resistance, and nodes for the intersection points of traffic-route sections, and the route to be calculated runs from a starting segment to a destination segment, and where, for purposes of optimization, the segments from the destination segment to the starting segment are evaluated with respect to the best resistance. The route is optimized, in each instance, from a starting segment up to the fixed route sections, at the fixed route sections, and from the fixed route section up to a destination segment.

Method for the automatic calculation of optimum routes

The method calculates by means of a navigation device an optimized route to a final destination, which is constrained to pass through at least one transition region of a real road network. Each transition region corresponds to a surface region of a stored digital map, which represents the road network with segments having resistances and nodes. The location and extent of each surface region are defined by a user of the navigation device. Relevant segments are stored in a via area list (VAL) in the navigation device. Route segments are optimized in the navigation device by a route-searching algorithm and are stored in route tables. Segment optimizations are executed and results are stored in separate sectional route tables. The overall resistance of the route is minimized under constraint that it passes through the at least one surface region. A navigation apparatus for performing this method is also described.

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Quedlinburg, Germany

Guido Mueller