EP2245427A1 - Procede de fonctionnement d'un appareil de navigation - Google Patents

Procede de fonctionnement d'un appareil de navigation

Info

Publication number
EP2245427A1
EP2245427A1 EP09711312A EP09711312A EP2245427A1 EP 2245427 A1 EP2245427 A1 EP 2245427A1 EP 09711312 A EP09711312 A EP 09711312A EP 09711312 A EP09711312 A EP 09711312A EP 2245427 A1 EP2245427 A1 EP 2245427A1
Authority
EP
European Patent Office
Prior art keywords
route
graphical
data
schematized
representation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09711312A
Other languages
German (de)
English (en)
Inventor
Michael Heuser
Radu Tudose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Garmin Wurzburg GmbH
Original Assignee
Navigon AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Navigon AG filed Critical Navigon AG
Publication of EP2245427A1 publication Critical patent/EP2245427A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3667—Display of a road map
    • G01C21/3676—Overview of the route on the road map
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/003—Maps
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/10—Map spot or coordinate position indicators; Map reading aids

Definitions

  • the invention relates to a method for operating a navigation system according to the preamble of claim 1.
  • Generic navigation systems are used, for example, as mobile or permanently installed navigation devices, in particular in motor vehicles, in order to guide the driver along a route from a starting point to a destination point.
  • the user Via an input device, the user can enter operator commands and location information and thereby enter into communication with the navigation system.
  • a signal receiving unit of the navigation system By receiving position signals, which are emitted in particular by positioning satellites, a signal receiving unit of the navigation system in cooperation with a position determining unit can determine the position of the navigation system.
  • the planned route can also be determined by means of a route calculation unit and used as a basis for the route guidance process.
  • the planned route can be displayed graphically to the user on a display device.
  • the graphical route display should give the user a visual impression of the route through the geographical area.
  • BESTATIGUNGSKOPIE Also known generic systems send to a wirelessly reachable server a request for calculating a route from a start to a destination, preferably with the current position as a starting point and get not only the calculated route but also information to display the calculated route in the display unit of the system in different zoom levels. These systems are known as offboard routing.
  • the inventive method is based on the fundamental idea that, especially in the graphic representation of very long routes, the exact calculation of the geometric course of the route for a good understandable graphical route representation is not required. For very long routes, such a large number of road segments must be displayed simultaneously on the display device, so that it does not depend on the exact geometric course of a single road segment for the clear indication of the route. In order to avoid, however, that the graphically displayed route course deviates too much from the actual course of the route, it is proposed according to the invention to resort to the route data which are already stored in the volatile main memory in the calculation of the graphic data of a schematized graphical route representation.
  • the route data preferably stored in the volatile main memory are selected as route data which were selected from the road network database during the route calculation and describe the route course between the starting point and the destination point.
  • the method according to the invention offers particularly great advantages if the road map stored electronically in the road network database is divided into a plurality of subregions which are to be referred to below as tiles.
  • the totality of all tiles complement each other without gaps to the corresponding geographical area.
  • Each tile is separated in the database by a separate set of records. which contains all the necessary data for the description of the road network in the corresponding subarea.
  • Such data are also selected as route data from the road network database relating to the tiles over which the route travels.
  • Such route data relating to the tiles may be identifiers that associate the associated tile with each route element.
  • this identifier is already part of the identifier of the route element itself.
  • the identifier can already be mathematically deduced from the identifier by means of known methods such as quad code, at which geographical position the tile is located.
  • route tiles These tiles, which are touched or cut by the route, will hereafter be referred to as route tiles.
  • support points can then be derived in a simple manner, which serve as the basis for the graphical representation of the schematized route representation.
  • the selected interpolation points are connected to one another by line segments, so that the graphically represented route is thus represented as a sequence of line segments between the various interpolation points.
  • a support point is determined in each route tile by selecting a point in a specific, predetermined position of the route tile independently of the route. For example, the point in the middle of the route tile or the point located in a certain corner of the route tile, for example, the lower left corner of the route tile, can always be the base of the route tile Route tile are selected.
  • the route shown then consists of a sequence of line sections, each extending between the individual bases.
  • the course of the graphical route representation is roughly schematized.
  • the graphical route representation runs along all the tiles of the geographical area over which the calculated route passes.
  • the graphical route representation of the actual route of the route through the individual tiles is completely independent, since the support points are selected regardless of the route in a specific, predetermined position of the route tile.
  • At least two interpolation points are determined in each route tile in accordance with a second type of the schematized graphical route position. These vertices are the intersection points where the route intersects the tile boundaries. These intersections between route and tile boundaries must be calculated anyway during the route calculation process, so that the corresponding data are already present in the volatile main memory and can be easily selected.
  • the course of the graphical route representation is further approximated to the actual course of the route, since the individual line segments of the graphical route representation each extend between two points, namely between the two intersections that actually lie on the route.
  • the geometric course of the route between the intersection points is again disregarded in this type of schematized graphical route representation.
  • the schematized graphic route representation calculated according to the invention represents a considerable coarsening of the route course, the display of this coarsened route course does not always make sense. If, for example, a geographical area whose size corresponds to the size of one or a few tiles is displayed on the display device, a coarsening of the route profile is indicated by displaying straight line sections which run between the individual interpolation points in the middle or at the intersections of the tiles, certainly not useful. It is therefore particularly advantageous if the type of the schematized graphical route representation is changed depending on the predetermined graphical resolution of the route to be displayed. In particular, however, for displaying the route in the overview mode, the schematized graphical route representation can be used advantageously because in overview mode, the entire route is displayed contiguous and therefore regularly a correspondingly high resolution is necessary.
  • the type of the schematic graphical route representation can be determined in a particularly simple and rapid manner by determining the number of tiles to be displayed simultaneously on the display device or the number of route tiles to be displayed simultaneously on the display device. For the number of tiles or the number of route tiles for simultaneous display on the display device is characteristic of which coarsening in the graphical route representation can be used meaningful way. If, for example, a very large number of tiles or route tiles are displayed simultaneously on the display device, then it does not depend on the exact geometry of the road segments contained in the route, since this exact geometry is not due to the large number of tiles or route tiles to be displayed at the same time can be resolved.
  • these points should also be selected as interpolation points of the schematized graphical route representation become. Because these points are readily available and characterize the route exactly.
  • the distance between two adjacent pixels to be connected for the display of the route representation can be determined when displaying the route on a pixel-based pixel matrix. If the distance between two pixels to be connected for the route display exceeds a predetermined maximum, for example because there are five pixel spacing between two pixels to be connected for the route display, this can be defined as exceeding the maximum size of coarsening and thereby triggering the calculation of further auxiliary bases.
  • the additional support points can be selected, for example, by selecting further geometry data from the road network database in the corresponding region of the map. The additional support points ensure that the coarsening of the graphical route representation does not exceed a certain maximum.
  • the addition of additional support points is aborted when the predetermined minimum distance between two adjacent additional support points falls below a predetermined minimum distance. For example, is the distance between two additional support points or the distance between a predetermined minimum distance.
  • the method according to the invention can be carried out on any type of mobile or permanently installed navigation devices.
  • the method according to the invention offers particularly great advantages when applied to navigation systems which comprise a stationarily installed server and a user terminal and are often referred to as "offboard navigation systems".
  • the user terminal may in particular be a portable minicomputer or a mobile telephone.
  • the server and the user terminal are connected to one another via a data communication connection, for example an internet connection or a mobile radio connection, and can exchange data via the data communication connection.
  • 1 shows the display of a route on a display device, on which a geographical area is displayed based on tiles;
  • FIG. 2 shows the display device according to FIG. 1 when displaying the route according to the first type of the schematized graphical route representation
  • FIG. 3 shows the display device according to FIG. 1 when displaying the route according to a second type of the schematized graphical route representation.
  • FIG. 1 shows a display device 1 in which a geographical area divided into tiles 2 is displayed together with a route 3.
  • the route 3 in this case runs from a starting point 4 to a destination point 5.
  • the tile boundaries shown in FIG. 1 serve only for better understanding and are usually not displayed during operation of the navigation system. Also, it is not necessary for the inventive method that square tiles are present.
  • route tiles 2 are selected, which are cut by the route 3 at intersection points 6 at their tile boundaries. These tiles 2, which are passed from Route 3 between starting point 4 and destination point 5, are referred to as route tiles.
  • the data of the route tiles for example the corresponding identification number and the location of the intersection points 6, are stored in the volatile main memory.
  • FIG. 2 shows the first type 9 of a roughly schematized graphical route representation of the route 3.
  • the center 8 was calculated in each case for all route tiles stored in the main memory.
  • the first type 9 of the roughly schematized route representation is then obtained as a sequence of line segments, each between the different
  • FIG. 3 illustrates a second type 7 of a middle-level schematized graphical route representation.
  • the route progression results from the sequence of line sections between the intersections 6 in the individual route tiles. It can be seen that the course of the second type 7 is already very close to the actual course of the route 3 shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mathematical Physics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Automation & Control Theory (AREA)
  • Navigation (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un appareil de navigation comportant un dispositif de saisie qui permet de saisir des ordres de commande et/ou des indications de lieux, notamment des points de départ et/ou d'arrivée, une banque de données de réseau routier dans laquelle est décrit le réseau routier d'une zone géographique déterminée, une unité de calcul d'itinéraire destinée au calcul d'un itinéraire en tenant compte des indications de lieux et de la banque de données de réseau routier, l'itinéraire partant du point de départ et allant au point d'arrivée, une unité de réception de signaux destinée à la réception de signaux de positions, notamment de signaux satellite, une unité de détermination de position qui détermine la position momentanée à partir des signaux de position, un dispositif d'affichage (1) qui permet une visualisation graphique de l'itinéraire (3) prévu. Selon l'invention, a) des données d'itinéraire sont sélectionnées et mises en mémoire intermédiaire lors du calcul d'itinéraire à partir de la banque de données de réseau routier, les données d'un itinéraire décrivant le déroulement de l'itinéraire entre le point de départ et le point d'arrivée; b) des données graphiques d'une représentation graphique schématisée d'itinéraire (7,9) sont calculées pour l'affichage graphique de l'itinéraire (3) sur le dispositif d'affichage (1), les données graphiques étant calculées sur la base des données d'itinéraire en mémoire intermédiaire; c) la représentation graphique schématisée d'itinéraire (7,9) est visualisée de manière graphique sur le dispositif d'affichage (1).
EP09711312A 2008-02-11 2009-01-21 Procede de fonctionnement d'un appareil de navigation Withdrawn EP2245427A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008008569 2008-02-11
DE102008021952A DE102008021952A1 (de) 2008-02-11 2008-05-02 Verfahren zum Betrieb eines Navigationssystems
PCT/DE2009/000072 WO2009100701A1 (fr) 2008-02-11 2009-01-21 Procédé de fonctionnement d'un appareil de navigation

Publications (1)

Publication Number Publication Date
EP2245427A1 true EP2245427A1 (fr) 2010-11-03

Family

ID=40911439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09711312A Withdrawn EP2245427A1 (fr) 2008-02-11 2009-01-21 Procede de fonctionnement d'un appareil de navigation

Country Status (3)

Country Link
EP (1) EP2245427A1 (fr)
DE (1) DE102008021952A1 (fr)
WO (1) WO2009100701A1 (fr)

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US9026367B2 (en) * 2012-06-27 2015-05-05 Microsoft Technology Licensing, Llc Dynamic destination navigation system
DE102012213307A1 (de) * 2012-07-30 2014-01-30 Robert Bosch Gmbh Verfahren und Vorrichtung zum Bestimmen einer Darstellung von Beschriftungselementen einer digitalen Karte sowie Verfahren und Vorrichtung zum Anzeigen einer digitalen Karte
CN103712628B (zh) * 2014-01-03 2016-09-21 宇龙计算机通信科技(深圳)有限公司 导航路径描绘方法和终端
DE102015000394B4 (de) 2015-01-13 2019-09-05 Audi Ag Fahrzeugflotten-basierte Messung von Umgebungsdaten

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DE19648906A1 (de) * 1996-11-26 1998-05-28 Mannesmann Vdo Ag Verfahren und Einrichtung zur Zielführungsunterstützung eines Fahrzeugführers
DE19963766A1 (de) * 1999-12-30 2001-07-05 Bosch Gmbh Robert Verfahren zum Betrieb eines Navigationssystems
JP4065108B2 (ja) * 2001-04-06 2008-03-19 三菱電機株式会社 車両用ナビゲーション装置
JP4030809B2 (ja) * 2002-06-24 2008-01-09 三菱電機株式会社 経路探索装置及びプログラム
DE10239440A1 (de) * 2002-08-28 2004-03-11 Robert Bosch Gmbh Verfahren zum Ermitteln von Kartendaten
US6782319B1 (en) * 2002-11-26 2004-08-24 Navteq North America, Llc Method for organizing map data
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JP4579640B2 (ja) * 2004-10-18 2010-11-10 クラリオン株式会社 要約地図作成装置
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Also Published As

Publication number Publication date
DE102008021952A1 (de) 2009-09-03
WO2009100701A8 (fr) 2009-10-15
WO2009100701A1 (fr) 2009-08-20

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