Abstract: A piston ring includes a base body having an inner circumferential surface, first and second flank surfaces and an outer circumferential surface, wherein a first hard chromium layer with a crack network is applied to the outer circumferential surface and has a crack density of 10-250 cracks per mm and solid particles having an average particle size of 0.01-10 ?m embedded in cracks of the first hard chromium layer, a second hard chromium layer having a crack network applied to the first hard chromium layer and having a crack density of the crack network of 10-250 cracks per mm, no solid particles being embedded in the cracks thereof, where the cracks have an average width of 1-15 ?m, the cracks are electrolytically expanded and the surface proportion of the cracks are 3-25% based on a total surface of the second hard chromium layer.

Abstract: A method and a device are provided for outputting data records on the basis of input data records entered by a user, a set of data records present in a database being structured via a tree structure, and search criteria and filter information items being assigned to nodes in the tree structure which are not terminal nodes.

Abstract: A storage medium on which geographic data of a geographic region are stored together as map units, a corresponding method for generating a map from the geographic data, and a corresponding navigation device. In order to reduce the amount of data to be processed, the map units are structured hierarchically, map units of an nth order respectively corresponding to one geographic partial region, n being a natural number, and map units of an (n+1)th order respectively corresponding to one geographic subregion of one of the partial regions.

Abstract: A method for destination selection in a navigation system in which each destination from a totality of all destinations is defined by destination parameters and a set of possible destinations from the totality of all destinations is limited step-wise due to the input of individual characters for one parameter. When inputting the characters, a switch may be made from one destination parameter to an input of a character for another parameter.

Abstract: In a method for the input of a destination, first of all a category selection is made, destinations corresponding to the category selection subsequently being offered for selection, at least a portion of the destinations being assigned to at least one subordinate category that, in each instance, has a superordinate category, characterized in that a category selection is made such that in each case, a superordinate category is displayed for the category selection or the superordinate category is replaced by one or the plurality of categories subordinate to it, and in each instance, a replacement is made when the number of subordinate categories with respect to a superordinate category is less than a predefined first threshold value.

Abstract: A possibility for simplifying the inputting of the destination in a motor vehicle navigation system by providing the user with useful additional items of information for the specification of ambiguous destination indications. Such a navigation system includes means for destination input, a navigation module for route planning, and means for displaying information, in particular indications of location, additional items of information concerning the indications of location, and route information, the means for destination input supporting a hierarchical, interactive inputting of the destination, by providing the user, in the case of ambiguous textual destination indications, with a choice of destination alternatives, including additional items of specifying information, until an unambiguous destination indication is made. The textual destination indications are stored together with corresponding geographic coordinates.

Abstract: A storage medium on which geographic data of a geographic region are stored together as map units, a corresponding method for generating a map from the geographic data, and a corresponding navigation device. In order to reduce the amount of data to be processed, the map units are structured hierarchically, map units of an nth order respectively corresponding to one geographic partial region, n being a natural number, and map units of an (n+1)th order respectively corresponding to one geographic subregion of one of the partial regions.

Abstract: A method is proposed for entering place names into a device for processing the place names, in particular into a navigation device in a vehicle, where in the case that a match of a place name is ambiguous, a graphical representation for distinguishing the respective places of the same name is displayed for selection of the particular place.

Abstract: A navigation device for a vehicle, in particular for a motor vehicle, has a hierarchical database containing a data tree with hierarchically arranged data and at least one geographic database containing data that are arranged in geographic subregions. A reference to at least one geographic database is provided in the hierarchical database.

Abstract: A method for destination selection in a navigation system in which each destination from a totality of all destinations is defined by destination parameters and a set of possible destinations from the totality of all destinations is limited step-wise due to the input of individual characters for one parameter. When inputting the characters, a switch may be made from one destination parameter to an input of a character for another parameter.

Abstract: A method and a device are provided for outputting data records on the basis of input data records entered by a user, a set of data records present in a database being structured via a tree structure, and search criteria and filter information items being assigned to nodes in the tree structure which are not terminal nodes.

Abstract: In a method for the input of a destination, first of all a category selection is made, destinations corresponding to the category selection subsequently being offered for selection, at least a portion of the destinations being assigned to at least one subordinate category that, in each instance, has a superordinate category, characterized in that a category selection is made such that in each case, a superordinate category is displayed for the category selection or the superordinate category is replaced by one or the plurality of categories subordinate to it, and in each instance, a replacement is made when the number of subordinate categories with respect to a superordinate category is less than a predefined first threshold value.

Abstract: A method for selecting a location. At least two lists of locations are depicted in a display, the beginning of the names of the locations in both lists being in agreement with the same previously entered character string and the basic set from which the entries of the lists are determined being different.

Abstract: A method is proposed for entering place names into a device for processing the place names, in particular into a navigation device in a vehicle, where in the case that a match of a place name is ambiguous, a graphical representation for distinguishing the respective places of the same name is displayed for selection of the particular place.

Abstract: A method of inputting a navigation destination into a navigation device, where a place name of the navigation destination is entered, where in the event that there are, in a navigation database, a plurality of navigation destinations having the same place name, supplemental information is output for the plurality of navigation destinations, allowing differentiation of the navigation destinations in each case. With this method, the supplemental information includes information about the direction and/or distance from a nearby or nearest prominent point. A navigation database for performing the method, in which position coordinates, in particular central point position coordinates, are stored for each stored navigation destination and for each of the prominent points which may be output as part of the supplemental information. This facilitates resolution of ambiguity when entering navigation destinations which is improved for the user, because it may be more easily understood.

Abstract: A method of inputting a navigation destination into a navigation device, where a place name of the navigation destination is entered, where in the event that there are, in a navigation database, a plurality of navigation destinations having the same place name, supplemental information is output for the plurality of navigation destinations, allowing differentiation of the navigation destinations in each case. With this method, the supplemental information includes information about the direction and/or distance from a nearby or nearest prominent point. A navigation database for performing the method, in which position coordinates, in particular central point position coordinates, are stored for each stored navigation destination and for each of the prominent points which may be output as part of the supplemental information. This facilitates resolution of ambiguity when entering navigation destinations which is improved for the user, because it may be more easily understood.