EP0794521A1 - Traffic guidance and information system - Google Patents

Traffic guidance and information system Download PDF

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Publication number
EP0794521A1
EP0794521A1 EP97103437A EP97103437A EP0794521A1 EP 0794521 A1 EP0794521 A1 EP 0794521A1 EP 97103437 A EP97103437 A EP 97103437A EP 97103437 A EP97103437 A EP 97103437A EP 0794521 A1 EP0794521 A1 EP 0794521A1
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EP
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Prior art keywords
information
traffic
control
information system
data
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EP97103437A
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German (de)
French (fr)
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EP0794521B1 (en
Inventor
Ronald Hain
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Grundig AG
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Grundig AG
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/096805—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route
    • G08G1/096827—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route where the route is computed onboard
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/096833—Systems involving transmission of navigation instructions to the vehicle where different aspects are considered when computing the route
    • G08G1/096844—Systems involving transmission of navigation instructions to the vehicle where different aspects are considered when computing the route where the complete route is dynamically recomputed based on new data

Definitions

  • the invention relates to a traffic control and information system with the features of the preamble according to claim 1.
  • Such a traffic control and information system is known, for example, from international laid-open specification WO 92/10824 A1.
  • This document describes a traffic control and information system in which data, such as road maps and traffic information, are sent to the vehicles passing by means of transmitters in beacons on the roadside.
  • the vehicles have a corresponding receiver with which the data can be received.
  • the data is stored and processed in the vehicle. In this way it is possible, for example, to guide the vehicle to a previously entered destination.
  • graphic or audiovisual information is generated which instructs the driver of the vehicle accordingly.
  • the desired destination can be reached, for example, by the fastest (time) or shortest (route length) route.
  • a further traffic control and information system is known from European laid-open specification EP 0 638 887 A2.
  • This system is composed of a control unit, a navigation unit, a data memory, a radio receiver, a transmitter and receiver for beacon transmitters and an information output unit.
  • the navigation unit is powered by a GPS unit and other sensors, e.g. Wheel sensors, formed.
  • the data memory is formed by a CD-ROM device and contains digitized road maps.
  • the radio receiver has a device for evaluating traffic reports. The respective location can be determined using the navigation unit and the digitized street maps. Starting from this location, a desired destination can be reached by means of driving information output via the information output unit and determined by the control unit.
  • the traffic reports provided by the radio receiver can be taken into account, for example in order not to get caught in a traffic jam.
  • individual and interactive targeting can be carried out using the data from the beacon transmitters.
  • this system has the disadvantage that the transferable data rate is relatively low, so that the transfer of the data can take a longer period of time, which means that traffic management information may be made available too late.
  • the object of the present invention is therefore to provide a traffic control and information system which enables individual and interactive information and traffic management with little effort.
  • the advantage of the invention can be seen in the fact that all the data required for traffic management and information are already stored in encrypted form. This makes it possible for traffic management or information to be carried out with only very short reaction times. In addition, the return channel used is only used to a small extent for interactive information and traffic management.
  • FIG. 1 shows a block diagram of a subscriber device of the traffic control and information system according to the invention. It comprises a control device 10, e.g. B. a microcomputer, a navigation system for determining the current position, consisting of a GPS receiver 11 with antenna 12, a CD-ROM storage system 13, which contains, for example, digitized road maps, and possibly other sensors, such as. B. wheel sensors. There is also a radio receiver 16 with antenna 17, which can evaluate traffic information, and a memory device 18, in which the traffic information originating from radio receiver 16 is stored. There is also a user interface 19 which has means for entering the desired information and means for outputting the information obtained from the subscriber device.
  • a control device 10 e.g. B. a microcomputer
  • a navigation system for determining the current position consisting of a GPS receiver 11 with antenna 12
  • CD-ROM storage system 13 which contains, for example, digitized road maps, and possibly other sensors, such as. B. wheel sensors.
  • radio receiver 16 with antenna 17, which can evaluate traffic information
  • the means for input can be formed, for example, by a keyboard or a speech recognition system, the means for outputting the information can include both optical and acoustic means, for example a display and a speech synthesizer.
  • a return channel is provided, via which the subscriber device can communicate individually with a control center.
  • the return channel can be formed, for example, by a radio telephone according to the GSM standard 14 with an antenna 15.
  • FIG. 2 shows a block diagram of the center of the traffic control and information system according to the invention. It consists of a control device 20, a database 21 as well as an input device 22 and a memory 23 for current information. The center also has a connection 24 to a radio transmitter and a connection 25 to the return channel for the subscriber equipment.
  • the database 21 can be formed, for example, by a CD-ROM storage system and can, in addition to digitized street maps, other information such as information about hotels, parking spaces, etc. contain.
  • the input device 22 and the memory 23 current information that is subject to strong changes, such as information about events or traffic disruptions, can be recorded and stored.
  • the data can be generated by the control device 20 in encrypted or unencrypted form.
  • data is generated in unencrypted form that contains, for example, information about dangers, e.g. B. Wrong-way driver on the Autobahn A6 ... ".
  • Data generated in encrypted form can be special information, for example information about hotels or restaurants.
  • Keys are generated for the encrypted data in accordance with the encryption carried out by the control device 20, with which the encryption can be canceled It can be provided that different packets of information are formed, the data of which are encrypted differently, a number of keys corresponding to the number of packets being generated.
  • the data of the center broadcast by the radio transmitter are received by the radio receiver 16 of the subscriber device and stored in the memory device 18. If certain information is requested by means of the user interface 19, the necessary data are called up by the control device 10 from the CD-ROM storage system 13 and the storage device 18 and the corresponding information is output via the user interface 19. If the data or parts of the data in the storage device 18 are encrypted, the control device 10 of the subscriber device retrieves the key or keys required for decrypting the data from the control center via the radio telephone 14, 15. The corresponding query of the subscriber device is received at the central station via the radio telephone connection 25 and the control device 20 of the central station provides the key or keys requested via the radio connection.
  • the requesting participant can be charged at the central office for the provision of the key or keys.
  • the fees can also be charged to the person who provides the information; For example, it can be of interest to the operators of hotels if participants who call up information about accommodation via the traffic control and information system are given their addresses, or if these participants are guided to their hotels by the traffic control system.
  • the transmission of the data in encrypted and unencrypted form via a radio transmitter is mainly advantageous for collective data, i. H. for data that may be of interest to several participants. Special data can also be made available via the radio telephone. However, it must be ensured that the collective data broadcast via radio transmitters and the data transmitted by radio telephone are coordinated with one another.
  • the amount of data broadcast can be reduced, since in this case only those data are broadcast that are intended for the region in which the radio station can be received.
  • Such a division is supported by the existing broadcasting of individual radio programs via various regional radio stations with different transmission frequencies.
  • Radio transmitters according to the DAB standard and corresponding radio receivers in the subscriber facilities are particularly suitable for transmitting the data.
  • the radio transmitter can also be a special data transmitter that is not maintained by a broadcaster but, for example, by a private operator. Only data required for the traffic control and information system are then broadcast via this data transmitter, for example.

Abstract

The system has a controller, a navigation device, a radio receiver for evaluating traffic information, a return channel and a user interface. Coded traffic control and information system data received by the receiver are stored in a memory. A code is requested from a central station by the controller using the return channel according to traffic control and/or information requests entered via the user interface. The data in the memory corresp. to the request is decoded using the code retrieved from the central station. The decoded data from the controller is processed together with the data from the other devices of the control and information system and is made available via the user interface.

Description

Die Erfindung betrifft ein Verkehrsleit- und Informationssystem mit den Merkmalen des Oberbegriffs nach Anspruch 1.The invention relates to a traffic control and information system with the features of the preamble according to claim 1.

In den nächsten zehn Jahren wird in der Bundesrepublik Deutschland mit einem Anstieg des Individualverkehrs um 25 Prozent und einem Anstieg des Güterverkehrs um 80 Prozent gerechnet. Gleichzeitig ist für den selben Zeitraum lediglich eine Erweiterung des Straßennetzes um fünf Prozent geplant. Somit wächst das Verkehrsaufkommen wesentlich stärker als das Straßennetz.Over the next ten years, an increase in private transport of 25 percent and an increase in freight transport by 80 percent is expected in the Federal Republic of Germany. At the same time, only an expansion of the road network by five percent is planned for the same period. This means that the volume of traffic grows much faster than the road network.

Die derzeitigen und zukünftigen Verkehrsprobleme sind durch weiteren Ausbau des Straßennetzes nicht nachhaltig zu lösen, sondern nur durch ein intelligentes dynamisches Verkehrsleit- und Informationssystem, in dem neben dem Individualverkehr auch der öffentliche Nahverkehr eingebunden ist.The current and future traffic problems cannot be solved sustainably by further expanding the road network, but only by an intelligent, dynamic traffic management and information system, which also includes local public transport in addition to individual transport.

Ein derartiges Verkehrsleit- und Informationssystem ist beispielsweise aus der Internationalen Offenlegungsschrift WO 92/10824 A1 bekannt. In diesem Dokument wird ein Verkehrsleit- und Informationssystem beschrieben, bei dem mittels Sendern in Baken am Straßenrand Daten, wie beispielsweise Straßenkarten und Verkehrsinformationen, an die vorbeifahrenden Fahrzeuge gesendet werden. Die Fahrzeuge verfügen über einen entsprechenden Empfänger, mit dem die Daten empfangen werden können. Die Daten werden im Fahrzeug gespeichert und verarbeitet. Auf diese Weise ist es beispielsweise möglich, das Fahrzeug zu einem vorher eingegebenen Zielpunkt zu leiten. Zu diesem Zweck werden graphische oder audiovisuelle Informationen erzeugt, die dem Führer des Fahrzeugs entsprechend instruieren. Auf diese Weise kann der gewünschte Zielort beispielsweise auf dem schnellsten (Zeit) oder kürzesten (Streckenlänge) Weg erreicht werden.Such a traffic control and information system is known, for example, from international laid-open specification WO 92/10824 A1. This document describes a traffic control and information system in which data, such as road maps and traffic information, are sent to the vehicles passing by means of transmitters in beacons on the roadside. The vehicles have a corresponding receiver with which the data can be received. The data is stored and processed in the vehicle. In this way it is possible, for example, to guide the vehicle to a previously entered destination. For this purpose, graphic or audiovisual information is generated which instructs the driver of the vehicle accordingly. In this way, the desired destination can be reached, for example, by the fastest (time) or shortest (route length) route.

Aus der Europäischen Offenlegungsschrift EP 0 638 887 A2 ist ein weiteres Verkehrsleit- und Informationssystem bekannt. Dieses System ist aus einer Steuereinheit, einer Navigationseinheit, einem Datenspeicher, einem Radioempfänger, einem Sender und Empfänger für Bakensender und einer Informationsausgabeeinheit aufgebaut. Die Navigationseinheit wird von einer GPS-Einheit und weiteren Sensoren, z.B. Radsensoren, gebildet. Der Datenspeicher wird von einem CD-ROM-Gerät gebildet und enthält digitalisierte Straßenkarten. Der Radioempfänger weist eine Einrichtung zur Auswertung von Verkehrsmeldungen auf. Mittels der Navigationseinheit und der digitalisierten Straßenkarten kann der jeweilige Aufenthaltsort bestimmt werden. Ausgehend von diesem Aufenthaltsort kann ein gewünschter Zielort mittels über die Informationsausgabeeinheit ausgegebene Fahrinformationen, die von der Steuereinheit ermittelt wurden, erreicht werden. Dazu können die vom Radioempfänger bereitgestellten Verkehrsmeldungen berücksichtigt werden, um beispielsweise nicht in einen Stau zu geraten. Außerdem kann mittels der von den Bakensendern stammenden Daten eine individuelle und interaktive Ziellenkung erfolgen.A further traffic control and information system is known from European laid-open specification EP 0 638 887 A2. This system is composed of a control unit, a navigation unit, a data memory, a radio receiver, a transmitter and receiver for beacon transmitters and an information output unit. The navigation unit is powered by a GPS unit and other sensors, e.g. Wheel sensors, formed. The data memory is formed by a CD-ROM device and contains digitized road maps. The radio receiver has a device for evaluating traffic reports. The respective location can be determined using the navigation unit and the digitized street maps. Starting from this location, a desired destination can be reached by means of driving information output via the information output unit and determined by the control unit. For this purpose, the traffic reports provided by the radio receiver can be taken into account, for example in order not to get caught in a traffic jam. In addition, individual and interactive targeting can be carried out using the data from the beacon transmitters.

Die bekannten Systeme weisen jedoch den Nachteil auf, daß die Installation der für die Datenübertragung nötigen Bakensender sehr aufwendig ist.However, the known systems have the disadvantage that the installation of the beacon transmitters required for the data transmission is very complex.

Darüber hinaus sind Systeme bekannt, bei denen an Stelle von Bakensendern ein bereits vorhandenes Funktelefonsystem zur Übertragung der Verkehrsleit- und Informationsdaten verwendet wird.In addition, systems are known in which, instead of beacon transmitters, an already existing radio telephone system is used to transmit the traffic control and information data.

Dieses System weist aber einerseits den Nachteil auf, daß die übertragbare Datenrate relativ gering ist, so daß die Übertragung der Daten einen längeren Zeitraum in Anspruch nehmen kann, wodurch Verkehrsleitinformationen unter Umständen zu spät zur Verfügung gestellt werden. Andererseits ist es als nachteilig anzusehen, daß die Telefonverbindung über einen längeren Zeitraum aufrechterhalten werden muß, wodurch das Funktelefonnetz stark belastet wird und hohe Gebühren entstehen.On the one hand, this system has the disadvantage that the transferable data rate is relatively low, so that the transfer of the data can take a longer period of time, which means that traffic management information may be made available too late. On the other hand, it is disadvantageous that the telephone connection has to be maintained over a longer period of time, which places a heavy load on the radio telephone network and incurs high charges.

Aufgabe der vorliegenden Erfindung ist es deshalb, ein Verkehrsleit- und Informationssystem anzugeben, das mit geringem Aufwand eine individuelle und interaktive Information und Verkehrsleitung ermöglicht.The object of the present invention is therefore to provide a traffic control and information system which enables individual and interactive information and traffic management with little effort.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by the features of claim 1.

Der Vorteil der Erfindung ist darin zu sehen, daß alle für die Verkehrsleitung und zur Information benötigten Daten bereits in verschlüsselter Form gespeichert sind. Dadurch ist es möglich, daß die Verkehrsleitung bzw. Information mit nur sehr geringen Reaktionszeiten vorgenommen werden kann. Darüber hinaus wird der verwendete Rückkanal nur in geringem Umfang für die interaktive Information und Verkehrsleitung belegt.The advantage of the invention can be seen in the fact that all the data required for traffic management and information are already stored in encrypted form. This makes it possible for traffic management or information to be carried out with only very short reaction times. In addition, the return channel used is only used to a small extent for interactive information and traffic management.

Weitere Vorteile der Erfindung ergeben sich aus den abhängigen Ansprüchen und der nachfolgenden Beschreibung anhand von Figuren.Further advantages of the invention result from the dependent claims and the following description with reference to figures.

Es zeigt

  • Figur 1 ein Blockschaltbild einer Teilnehmereinrichtung des erfindungsgemäßen Verkehrsleit- und Informationssystems, und
  • Figur 2 ein Blockschaltbild einer Zentrale des erfindungsgemäßen Verkehrsleit- und Informationssystems.
It shows
  • Figure 1 is a block diagram of a subscriber device of the traffic control and information system according to the invention, and
  • Figure 2 is a block diagram of a center of the traffic control and information system according to the invention.

In den Figuren sind zur Vereinfachung nur die im Zusammenhang mit dem Verständnis der Erfindung nötigen Merkmale dargestellt. Nähere Erläuterungen, beispielsweise die Erläuterung eines Navigationssystems, können den eingangs erwähnten Dokumenten entnommen werden.For the sake of simplicity, the figures only show the features necessary in connection with the understanding of the invention. Further explanations, for example the explanation of a navigation system, can be found in the documents mentioned at the beginning.

In Figur 1 ist ein Blockschaltbild einer Teilnehmereinrichtung des erfindungsgemäßen Verkehrsleit- und Informationssystems dargestellt. Es umfaßt eine Steuereinrichtung 10, z. B. ein Mikrocomputer, ein Navigationssystem zur Bestimmung der augenblicklichen Position, bestehend aus einem GPS-Empfänger 11 mit Antenne 12, einem CD-ROM-Speichersystem 13, welches beispielsweise digitalisierte Straßenkarten enthält, und unter Umständen weiteren Sensoren, wie z. B. Radsensoren. Weiterhin ist ein Rundfunkempfänger 16 mit Antenne 17, der Verkehrsinformationen auswerten kann, sowie eine Speichereinrichtung 18, in welcher die vom Rundfunkempfänger 16 stammenden Verkehrsinformationen gespeichert werden, vorhanden. Außerdem ist eine Benutzerschnittstelle 19 vorhanden, die Mittel zur Eingabe der gewünschten Informationen und Mittel zur Ausgabe der von der Teilnehmereinrichtung gewonnenen Informationen aufweist. Die Mittel zur Eingabe können beispielsweise von einer Tastatur oder von einem Spracherkennungssystem gebildet werden, die Mittel zur Ausgabe der Informationen können sowohl optische als auch akustische Mittel, beispielsweise ein Display und einen Sprachsynthesizer, umfassen. Darüber hinaus ist ein Rückkanal vorgesehen, über den die Teilnehmereinrichtung mit einer Zentrale individuell kommunizieren kann. Der Rückkanal kann beispielsweise von einem Funktelefon nach dem GSM-Standard 14 mit Antenne 15 gebildet werden.FIG. 1 shows a block diagram of a subscriber device of the traffic control and information system according to the invention. It comprises a control device 10, e.g. B. a microcomputer, a navigation system for determining the current position, consisting of a GPS receiver 11 with antenna 12, a CD-ROM storage system 13, which contains, for example, digitized road maps, and possibly other sensors, such as. B. wheel sensors. There is also a radio receiver 16 with antenna 17, which can evaluate traffic information, and a memory device 18, in which the traffic information originating from radio receiver 16 is stored. There is also a user interface 19 which has means for entering the desired information and means for outputting the information obtained from the subscriber device. The means for input can be formed, for example, by a keyboard or a speech recognition system, the means for outputting the information can include both optical and acoustic means, for example a display and a speech synthesizer. In addition, a return channel is provided, via which the subscriber device can communicate individually with a control center. The return channel can be formed, for example, by a radio telephone according to the GSM standard 14 with an antenna 15.

In Figur 2 ist ein Blockschaltbild der Zentrale des erfindungsgemäßen Verkehrsleit- und Informationssystems dargestellt. Es besteht aus einer Steuereinrichtung 20, einer Datenbank 21 sowie einer Eingabeeinrichtung 22 und einem Speicher 23 für aktuelle Informationen. Die Zentrale weist außerdem eine Verbindung 24 zu einem Rundfunksender und eine Verbindung 25 zu dem Rückkanal für die Teilnehmereinrichtungen auf. Die Datenbank 21 kann beispielsweise von einem CD-ROM-Speichersystem gebildet werden und kann und neben digitalisierten Straßenkarten andere Informationen wie Informationen über Hotels, Parkplätze usw. enthalten. Mittels der Eingabeeinrichtung 22 und des Speichers 23 können aktuelle Informationen erfaßt und gespeichert werden, die starker Änderung unterliegen, wie beispielsweise Informationen über Veranstaltungen oder Verkehrsbehinderungen.FIG. 2 shows a block diagram of the center of the traffic control and information system according to the invention. It consists of a control device 20, a database 21 as well as an input device 22 and a memory 23 for current information. The center also has a connection 24 to a radio transmitter and a connection 25 to the return channel for the subscriber equipment. The database 21 can be formed, for example, by a CD-ROM storage system and can, in addition to digitized street maps, other information such as information about hotels, parking spaces, etc. contain. By means of the input device 22 and the memory 23, current information that is subject to strong changes, such as information about events or traffic disruptions, can be recorded and stored.

Sämtliche in der Zentrale zur Verfügung stehenden Informationen werden von der Steuereinrichtung 20 verarbeitet und die dabei entstandenen Daten werden zur Ausstrahlung über die Verbindung 24 dem Rundfunksender zugeleitet. Dabei können die Daten von der Steuereinrichtung 20 in verschlüsselter oder unverschlüsselter Form erzeugt werden. In unverschlüsselter Form werden beispielsweise Daten erzeugt, die beispielsweise Informationen über Gefahren enthalten, z. B.

Figure imgb0001
Falschfahrer auf der Autobahn A6...". In verschlüsselter Form erzeugte Daten können spezielle Informationen sein, beispielsweise Informationen über Hotels oder Restaurants. Für die verschlüsselten Daten werden entsprechend der von der Steuereinrichtung 20 vorgenommenen Verschlüsselung Schlüssel erzeugt, mit denen die Verschlüsselung aufgehoben werden kann. Dabei kann es vorgesehen sein, daß verschiedene Pakete von Informationen gebildet werden, deren Daten unterschiedlich verschlüsselt werden, wobei eine der Anzahl der Pakete entsprechende Anzahl von Schlüsseln erzeugt wird.All of the information available in the control center is processed by the control device 20 and the data thus created are transmitted to the radio transmitter for transmission via the connection 24. The data can be generated by the control device 20 in encrypted or unencrypted form. For example, data is generated in unencrypted form that contains, for example, information about dangers, e.g. B.
Figure imgb0001
Wrong-way driver on the Autobahn A6 ... ". Data generated in encrypted form can be special information, for example information about hotels or restaurants. Keys are generated for the encrypted data in accordance with the encryption carried out by the control device 20, with which the encryption can be canceled It can be provided that different packets of information are formed, the data of which are encrypted differently, a number of keys corresponding to the number of packets being generated.

Die vom Rundfunksender ausgestrahlten Daten der Zentrale werden vom Rundfunkempfänger 16 der Teilnehmereinrichtung empfangen und in der Speichereinrichtung 18 gespeichert. Werden mittels der Benutzerschnittstelle 19 bestimmte Information abgefragt, werden die nötigen Daten von der Steuereinrichtung 10 aus dem CD-ROM-Speichersystem 13 und der Speichereinrichtung 18 abgerufen und die entsprechende Information über die Benutzerschnittstelle 19 ausgegeben. Sind die Daten oder Teile der Daten in der Speichereinrichtung 18 verschlüsselt, ruft die Steuereinrichtung 10 der Teilnehmereinrichtung den oder die zur Entschlüsselung der Daten nötigen Schlüssel von der Zentrale über das Funktelefon 14, 15 ab. In der Zentrale geht die entsprechende Abfrage der Teilnehmereinrichtung über die Funktelefonverbindung 25 ein und die Steuereinrichtung 20 der Zentrale stellt den oder die angeforderten Schlüssel über die Funkverbindung zur Verfügung.The data of the center broadcast by the radio transmitter are received by the radio receiver 16 of the subscriber device and stored in the memory device 18. If certain information is requested by means of the user interface 19, the necessary data are called up by the control device 10 from the CD-ROM storage system 13 and the storage device 18 and the corresponding information is output via the user interface 19. If the data or parts of the data in the storage device 18 are encrypted, the control device 10 of the subscriber device retrieves the key or keys required for decrypting the data from the control center via the radio telephone 14, 15. The corresponding query of the subscriber device is received at the central station via the radio telephone connection 25 and the control device 20 of the central station provides the key or keys requested via the radio connection.

Für die Zurverfügungstellung des oder der Schlüssel können dem abfragenden Teilnehmer in der Zentrale Gebühren berechnet werden. Die Gebühren können aber auch demjenigen berechnet werden der die Informationen zur Verfügung stellt; beispielsweise kann es für die Betreiber von Hotels interessant sein, wenn Teilnehmern, die über das Verkehrsleit- und Informationssystem Informationen über Unterkünfte abrufen ihre Adresse angegeben wird, bzw. wenn diese Teilnehmer von dem Verkehrsleitsystem zu ihren Hotels geführt werden.The requesting participant can be charged at the central office for the provision of the key or keys. The fees can also be charged to the person who provides the information; For example, it can be of interest to the operators of hotels if participants who call up information about accommodation via the traffic control and information system are given their addresses, or if these participants are guided to their hotels by the traffic control system.

Die Ausstrahlung der Daten in verschlüsselter und unverschlüsselter Form über einen Rundfunksender ist hauptsächlich für kollektive Daten vorteilhaft, d. h. für Daten die für mehrere Teilnehmer von Interesse sein können. Spezielle Daten können darüber hinaus zusätzlich über das Funktelefon zur Verfügung gestellt werden. Es muß jedoch sichergestellt werden, daß die über Rundfunksender ausgestrahlten kollektiven Daten und die mittels Funktelefon übertragenen Daten aufeinander abgestimmt sind.The transmission of the data in encrypted and unencrypted form via a radio transmitter is mainly advantageous for collective data, i. H. for data that may be of interest to several participants. Special data can also be made available via the radio telephone. However, it must be ensured that the collective data broadcast via radio transmitters and the data transmitted by radio telephone are coordinated with one another.

Durch die Verwendung mehrere Zentralen, die ihre Daten über unterschiedliche Rundfunksender ausstrahlen, kann die Menge der ausgestrahlten Daten reduziert werden, da in diesem Fall nur diejenigen Daten ausgestrahlt werden, die für die Region bestimmt sind in der der Rundfunksender empfangen werden kann. Eine derartige Aufteilung wird durch die existierende Ausstrahlung einzelner Radioprogramme über verschiedene regionale Rundfunksender mit unterschiedlichen Sendefrequenzen unterstützt.By using several centers that broadcast their data via different radio stations, the amount of data broadcast can be reduced, since in this case only those data are broadcast that are intended for the region in which the radio station can be received. Such a division is supported by the existing broadcasting of individual radio programs via various regional radio stations with different transmission frequencies.

Besonders geeignet zur Übertragung der Daten sind Rundfunksender nach dem DAB-Standard und entsprechende Rundfunkempfänger in den Teilnehmereinrichtungen. Der Rundfunksender kann auch ein spezieller Datensender sein, der nicht von einer Rundfunkanstalt, sondern beispielsweise von einem privaten Betreiber unterhalten wird. Über diesen Datensender werden dann beispielsweise nur für das Verkehrsleit- und Informationssystem benötigte Daten ausgestrahlt.Radio transmitters according to the DAB standard and corresponding radio receivers in the subscriber facilities are particularly suitable for transmitting the data. The radio transmitter can also be a special data transmitter that is not maintained by a broadcaster but, for example, by a private operator. Only data required for the traffic control and information system are then broadcast via this data transmitter, for example.

Claims (6)

Verkehrsleit- und Informationssystem mit einer Steuereinrichtung (10), einer Naviagationseinrichtung (11, 12, 13), einem Rundfunkempfänger (16, 17) zur Auswertung von Verkehrsinformationen, einem Rückkanal (14, 15), und einer Benutzerschnittstelle (19),
dadurch gekennzeichnet, daß eine Speichereinrichtung (18) vorgesehen ist, in der vom Rundfunkempfänger (16, 17) empfangene, verschlüsselte Daten für das Verkehrsleit- und Informationssystem gespeichert werden, daß entsprechend der über die Benutzerschnittstelle (19) eingegebenen Verkehrsleit- und/oder Informationsabfrage von der Steuereinrichtung (10) über den Rückkanal (14, 15) ein Schlüssel von einer Zentrale abgerufen wird, der die der Abfrage entsprechenden Daten in der Speichereinrichtung (18) entschlüsselt, und daß die entschlüsselten Daten für die Verkehrsleitung und/oder Information von der Steuereinrichtung (10) zusammen mit den Daten der übrigen Einrichtungen (11 bis 15) des Verkehrsleit- und Informationssystems verarbeitet werden und über die Benutzerschnittstelle (19) zur Verfügung gestellt werden. Traffic control and information system with a control device (10), a navigation device (11, 12, 13), a radio receiver (16, 17) for evaluating traffic information, a return channel (14, 15), and a user interface (19),
characterized, that a storage device (18) is provided in which encrypted data received by the radio receiver (16, 17) for the traffic control and information system are stored, that, in accordance with the traffic control and / or information request entered via the user interface (19), the control device (10) uses the return channel (14, 15) to retrieve a key from a control center which stores the data corresponding to the request in the storage device (18) decrypted, and that the decrypted data for traffic management and / or information from the control device (10) are processed together with the data from the other devices (11 to 15) of the traffic management and information system and are made available via the user interface (19). Verkehrsleit- und Informationssystem nach Anspruch 1,
dadurch gekennzeichnet, daß die Zentrale eine Steuereinrichtung (20) aufweist, die verschlüsselte Daten für die Verkehrsleitung und/oder Information erzeugt und über einen Rundfunksender (24) zur Verfügung stellt, wobei die Steuereinrichtung (20) gleichzeitig Schlüssel zur Entschlüsselung der verschlüsselten Daten bestimmt, und daß die Steuereinrichtung (20) der Zentrale eine Verbindung (25) mit dem Rückkanal aufweist, über welche sie die Schlüssel selektiv zur Verfügung stellt. Traffic control and information system according to claim 1,
characterized, that the center has a control device (20) which generates encrypted data for traffic management and / or information and makes it available via a radio transmitter (24), the control device (20) simultaneously determining keys for decrypting the encrypted data, and that the control device (20) of the control center has a connection (25) to the return channel, via which it selectively provides the keys. Verkehrsleit- und Informationssystem nach Anspruch 3,
dadurch gekennzeichnet, daß die Steuereinrichtung (20) der Zentrale für die Zurverfügungstellung der Schlüssel eine Gebühr bestimmt und selektiv verrechnet. Traffic control and information system according to claim 3,
characterized, that the control device (20) of the control center determines a fee for the provision of the keys and charges them selectively. Verkehrsleit- und Informationssystem nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Navigationseinrichtung (11, 12, 13) von einem GPS-Empfänger (11, 12) und einer Speichereinrichtung (13) für digitalisierte Straßenkarten gebildet wird. Traffic control and information system according to one of claims 1 to 3,
characterized, that the navigation device (11, 12, 13) is formed by a GPS receiver (11, 12) and a storage device (13) for digitized road maps. Verkehrsleit- und Informationssystem nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Rückkanal (14, 15) von einem Funktelefon gebildet wird. Traffic management and information system according to one of Claims 1 to 4,
characterized, that the return channel (14, 15) is formed by a radio telephone. Verkehrsleit- und Informationssystem nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß Rundfunkempfänger (16, 17) und Rundfunksender (24) entsprechend des DAB-Standards aufgebaut sind. Traffic control and information system according to one of claims 1 to 5,
characterized, that radio receivers (16, 17) and radio transmitters (24) are constructed in accordance with the DAB standard.
EP97103437A 1996-03-06 1997-03-03 Traffic guidance and information system Expired - Lifetime EP0794521B1 (en)

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DE19608538A DE19608538C1 (en) 1996-03-06 1996-03-06 Traffic control and information system
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DE19608538C1 (en) 1997-05-15
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