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EP0866576A2 - RDS-receiver for the evaluation of traffic information messages - Google Patents

RDS-receiver for the evaluation of traffic information messages Download PDF

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Publication number
EP0866576A2
EP0866576A2 EP98104651A EP98104651A EP0866576A2 EP 0866576 A2 EP0866576 A2 EP 0866576A2 EP 98104651 A EP98104651 A EP 98104651A EP 98104651 A EP98104651 A EP 98104651A EP 0866576 A2 EP0866576 A2 EP 0866576A2
Authority
EP
European Patent Office
Prior art keywords
rds
control unit
location
information
receiver
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Withdrawn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
EP98104651A
Other languages
German (de)
French (fr)
Other versions
EP0866576A3 (en
Inventor
Max Hegendörfer
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.)
Grundig Car Intermedia System GmbH
Original Assignee
Grundig 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 Grundig AG filed Critical Grundig AG
Publication of EP0866576A2 publication Critical patent/EP0866576A2/en
Publication of EP0866576A3 publication Critical patent/EP0866576A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/093—Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]

Definitions

  • the invention relates to an RDS receiver for the evaluation of Traffic information, with the features of the preamble of claim 1.
  • the Traffic Message Channel is provided in the RDS specifications is used to transmit traffic information. Because a total of a lot of TMC messages for a large area is broadcast by the RDS stations there is a need to determine the approximate location of the RDS receiver to determine and the RDS receiver for the evaluation of the To provide TMC messages. This makes it possible for the to provide relevant traffic information for each location.
  • the object of the present invention is therefore to provide an RDS receiver for Specify evaluation of traffic information, in which a manual entry of the Location is not required.
  • the advantage of the invention is in particular that the location is automatic is determined, making manual entries unnecessary.
  • the single figure shows a block diagram of an inventive RDS receiver for the evaluation of traffic information.
  • the figure shows an RDS receiver 2 by a tuner and a RDS decoder is formed, which is connected to an antenna 1.
  • a control device 3 for example, by a Microcomputer can be formed, connected to a memory 4.
  • a device for determining position 5 the can optionally be connected to the control device 3.
  • Radio signals are received by the RDS receiver 2 via the antenna 1, that contain RDS information.
  • the RDS information is from the RDS receiver 2 contained RDS decoder decoded.
  • the RDS decoder also decodes the TMC messages.
  • the TMC messages contain in addition the type of traffic information, e.g. B. 10 km traffic jam, also information about the place for which the traffic information is intended.
  • the decoded TMC messages are forwarded by the RDS receiver 2 to the connected control unit 3.
  • the control unit 3 uses the location information to generate the TMC message checks whether the present TMC message for the current location of the RDS receiver 2 is important.
  • the location information of the TMC message with information stored in the memory 4 about the current location of the RDS receiver 2 compared by the control unit 3.
  • the message is important, it is indicated by an optical and / or acoustic Output unit of the RDS receiver 2, or in a memory, for example the memory 4.
  • a user can click on such access stored traffic reports at any time and get a quick Gain an overview of the traffic situation in his area.
  • a device for determining the current position evaluates the receivable broadcast signals.
  • the RDS decoder originating RDS information such as the transmitter identification from the control unit 3 evaluated, which allow a conclusion to the currently receivable transmitter.
  • the respective location can be determined relatively precisely with RDS information.
  • the received stations with RDS information are included in the on the control unit 3 connected memory 4 stored table, from which shows which stations with RDS information in which areas received, compared. The location determined in this way becomes as above described, stored in memory 4.
  • the RDS receiver 2 To include all receivable stations To be able to evaluate RDS information, the RDS receiver 2 must either have two tuners and possibly two RDS decoders or a tuner that briefly and inaudibly while receiving a station on other stations can vote to evaluate the required RDS information. Otherwise there are disruptions in the audio playback of the Program of the station selected for reception.
  • the field strength of the or the received radio signals can be determined by the control unit 3.
  • the level of the received signals is digitized by a D / A converter to be able to be processed in the control unit 3.
  • Im to the control unit 3 connected memory 4 are tables for the location determination Field strength information for the transmission areas of the respective transmitters filed. Because of of the transmitter determined by means of the transmitter identification can then by means of the Evaluation of the reception field strength determines the respective location more precisely will.
  • the determined location is stored in memory 4 as described above.
  • Another device for determining the position can be from a Navigation system, for example one that works according to the GPS standard Establishment. Such a device for position determination 5 is shown in the figure.
  • the location determined by the position determination device 5 is then as described above, stored by the control device 3 in the memory 4 and for the selection of the TMC messages used by the control unit 3.
  • the location is determined by means of device 5 or as described above RDS information and / or reception field strengths should at least always follow the RDS receiver 2 is switched on. Is the RDS receiver in one Motor vehicle installed, the location should also after switching on of the RDS receiver 2 or after switching on the ignition of the motor vehicle be determined continuously, at certain time intervals.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuits Of Receivers In General (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The RDS receiver (2) decodes RDS information detected by an aerial (1) to provide traffic message channel (TMC) statements. These can be in the form of warnings about delays, accidents, etc. The decoded messages are fed to a control unit (3) that checks the location information relative to the vehicle position as determined by a navigation system (5) and allows the data to be stored in a memory (4) and automatically retrieved when appropriate.

Description

Die Erfindung betrifft einen RDS-Empfänger für die Auswertung von Verkehrshinweisen, mit den Merkmalen des Oberbegriffs nach Anspruch 1.The invention relates to an RDS receiver for the evaluation of Traffic information, with the features of the preamble of claim 1.

In den RDS-Spezifikationen ist der Traffic Message Channel (TMC) vorgesehen, der zur Übermittlung von Verkehrshinweisen verwendet wird. Da insgesamt eine Vielzahl von TMC-Meldungen für ein großes Gebiet von den RDS-Sendern ausgestrahlt wird ergibt sich die Notwendigkeit, den jeweiligen, ungefähren Standort des RDS-Emfängers zu bestimmen und dem RDS-Empfänger für die Auswertung der TMC-Meldungen zur Verfügung zu stellen. Damit ist es möglich, die für den jeweiligen Standort relevanten Verkehrshinweise zur Verfügung zu stellen.The Traffic Message Channel (TMC) is provided in the RDS specifications is used to transmit traffic information. Because a total of a lot of TMC messages for a large area is broadcast by the RDS stations there is a need to determine the approximate location of the RDS receiver to determine and the RDS receiver for the evaluation of the To provide TMC messages. This makes it possible for the to provide relevant traffic information for each location.

Beim bekannten Stand der Technik ist es deshalb vorgesehen, die Angaben über den jeweiligen, ungefähren Standort manuell am RDS-Empfänger einzugeben. Diese Vorgehensweise ist unkonfortabel und insbesondere dann nachteilig, wenn der RDS-Empfänger über größere Strecken, wenn er beispielsweise in einem Kraftfahrzeug eingebaut ist, bewegt wird.In the known prior art, it is therefore provided that the information about enter the approximate location manually on the RDS receiver. This Procedure is uncomfortable and particularly disadvantageous if the RDS receiver over longer distances, for example if it is in a Motor vehicle is installed, is moved.

Aufgabe der vorliegenden Erfindung ist es deshalb, einen RDS-Empfänger für die Auswertung von Verkehrshinweisen anzugeben, bei dem eine manuelle Eingabe des Standorts nicht erforderlich ist.The object of the present invention is therefore to provide an RDS receiver for Specify evaluation of traffic information, in which a manual entry of the Location is not required.

Erfindungsgemäß wird diese Aufgabe mit den Merkmalen des Anspruchs 1 gelöst. According to the invention, this object is achieved with the features of claim 1.

Der Vorteil der Erfindung liegt insbesondere darin, daß der Standort automatisch ermittelt wird, wodurch manuelle Eingaben überflüssig werden.The advantage of the invention is in particular that the location is automatic is determined, making manual entries unnecessary.

Weitere Vorteile der Erfindung ergeben sich aus den abhängigen Ansprüchen und der nachfolgenden Beschreibung anhand einer Figur.Further advantages of the invention result from the dependent claims and the following description based on a figure.

Die einzige Figur zeigt ein Blockschaltbild eines erfindungsgemäßen RDS-Empfängers für die Auswertung von Verkehrshinweisen.The single figure shows a block diagram of an inventive RDS receiver for the evaluation of traffic information.

Die Figur zeigt einen RDS-Empfänger 2, der von einem Tuner und einem RDS-Decoder gebildet wird, der an eine Antenne 1 angeschlossen ist. An den RDS-Empfänger 1 ist ein Steuereinrichtung 3, die beispielsweise von einem Mikrocomputer gebildet werden kann, mit einem Speicher 4 angeschlossen. In der Figur ist außerdem eine Einrichtung zur Positionsbestimmung 5 dargestellt, die wahlweise an die Steuereinrichtung 3 angeschlossen sein kann.The figure shows an RDS receiver 2 by a tuner and a RDS decoder is formed, which is connected to an antenna 1. To the RDS receiver 1 is a control device 3, for example, by a Microcomputer can be formed, connected to a memory 4. In the Figure is also shown a device for determining position 5, the can optionally be connected to the control device 3.

Über die Antenne 1 werden vom RDS-Empfänger 2 Rundfunksignale empfangen, die RDS-Informationen enthalten. Die RDS-Informationen werden vom im RDS-Empfänger 2 enthaltenen RDS-Decoder decodiert. Der RDS-Decoder decodiert dabei auch die TMC-Meldungen. Die TMC-Meldungen enthalten neben der Art des Verkehrshinweises, z. B. 10 km Stau, auch Informationen über den Ort für den die Verkehrshinweise bestimmt sind. Die decodierten TMC-Meldungen werden vom RDS-Empfänger 2 an die angeschlossene Steureinheit 3 weitergeleitet. Von der Steuereinheit 3 wird anhand der Ortsinformationen der TMC-Meldung überprüft, ob die vorliegende TMC-Meldung für den gegenwärtigen Standort des RDS-Empfängers 2 von Bedeutung ist. Dazu wird die Ortsinformation der TMC-Meldung mit einer im Speicher 4 abgelegten Information über den gegenwärtigen Standort des RDS-Empfängers 2 von der Steuereinheit 3 verglichen. Ist die Meldung von Bedeutung, wird sie über eine optische und/oder akustische Ausgabeeinheit des RDS-Empfängers 2 ausgegeben, bzw. in einem Speicher, beispielsweise dem Speicher 4, abgespeichert. Ein Nutzer kann auf die derart gespeicherten Verkehrsmeldungen jederzeit zugreifen und sich einen schnellen Überblick über die Verkehrssituation in seinem Aufenthaltsbereich verschaffen. Radio signals are received by the RDS receiver 2 via the antenna 1, that contain RDS information. The RDS information is from the RDS receiver 2 contained RDS decoder decoded. The RDS decoder also decodes the TMC messages. The TMC messages contain in addition the type of traffic information, e.g. B. 10 km traffic jam, also information about the place for which the traffic information is intended. The decoded TMC messages are forwarded by the RDS receiver 2 to the connected control unit 3. The control unit 3 uses the location information to generate the TMC message checks whether the present TMC message for the current location of the RDS receiver 2 is important. The location information of the TMC message with information stored in the memory 4 about the current location of the RDS receiver 2 compared by the control unit 3. If the message is important, it is indicated by an optical and / or acoustic Output unit of the RDS receiver 2, or in a memory, for example the memory 4. A user can click on such access stored traffic reports at any time and get a quick Gain an overview of the traffic situation in his area.

Eine Einrichtung zur Bestimmung der jeweils aktuellen Position, wertet die empfangbaren Rundfunksignale aus. Dabei werden die vom RDS-Decoder stammenden RDS-Informationen wie die Senderkennung von der Steuereinheit 3 ausgewertet, die einen Rückschluß die aktuell empfangbaren Sender erlauben. Durch die Auswertung aller am jeweiligen Standort zu empfangenden Sender mit RDS-Informationen läßt sich der jeweilige Standort relativ genau ermitteln. Dazu wird vom Tuner des RDS-Empfängers 2 der gesamte Empfangsfrequenzbereich durchgestimmt. Die empfangenen Sender mit RDS-Informationen werden mit im an die Steuereinheit 3 angeschlossenen Speicher 4 abgelegten Tabelle, aus welcher hervorgeht, welche Sender mit RDS-Informationen in welchen Gebieten zu empfangen sind, verglichen. Der auf diese Weise ermittelte Standort wird, wie oben beschrieben, im Speicher 4 abgelegt. Um alle empfangbaren Sender mit RDS-Informationen auswerten zu können, muß der RDS-Empfänger 2 entweder über zwei Tuner und evtl. zwei RDS-Decoder oder über einen Tuner verfügen, der kurzzeitig und unhörbar während des Empfangs eines Senders auf andere Sender abstimmen kann, um die benötigten RDS-Informationen auszuwerten. Ansonsten kommt es während der Auswertung zu Störungen bei der Audiowiedergabe des Programms des für den Empfang ausgewählten Senders.A device for determining the current position evaluates the receivable broadcast signals. The RDS decoder originating RDS information such as the transmitter identification from the control unit 3 evaluated, which allow a conclusion to the currently receivable transmitter. By evaluating all stations to be received at the respective location with The respective location can be determined relatively precisely with RDS information. To the tuner of the RDS receiver 2, the entire reception frequency range tuned. The received stations with RDS information are included in the on the control unit 3 connected memory 4 stored table, from which shows which stations with RDS information in which areas received, compared. The location determined in this way becomes as above described, stored in memory 4. To include all receivable stations To be able to evaluate RDS information, the RDS receiver 2 must either have two tuners and possibly two RDS decoders or a tuner that briefly and inaudibly while receiving a station on other stations can vote to evaluate the required RDS information. Otherwise there are disruptions in the audio playback of the Program of the station selected for reception.

Zur genaueren Standortbestimmung kann darüber hinaus noch die Feldstärke des oder der empfangenen Rundfunksignale von der Steuereinheit 3 ermittelt werden. Dazu wird der Pegel der Empfangssignale von einem D/A-Wandler digitalisiert, um in der Steuereinheit 3 verarbeitet werden zu können. Im an die Steuereinheit 3 angeschlossenen Speicher 4 sind für die Standortbestimmung Tabellen mit Feldstärkenangaben für die Sendegebiete der jeweiligen Sender abgelegt. Aufgrund des mittels der Senderkennung bestimmten Senders kann dann mittels der Auswertung der Empfangsfeldstärke der jeweilige Standort genauer bestimmt werden. Der ermittelte Standort wird, wie oben beschrieben, im Speicher 4 abgelegt.For more precise location determination, the field strength of the or the received radio signals can be determined by the control unit 3. For this purpose, the level of the received signals is digitized by a D / A converter to be able to be processed in the control unit 3. Im to the control unit 3 connected memory 4 are tables for the location determination Field strength information for the transmission areas of the respective transmitters filed. Because of of the transmitter determined by means of the transmitter identification can then by means of the Evaluation of the reception field strength determines the respective location more precisely will. The determined location is stored in memory 4 as described above.

Eine weitere Einrichtung zur Positionsbestimmung kann von einem Navigationssystem, beispielsweise einer nach dem GPS-Standard arbeitenden Einrichtung gebildet werden. Eine derartige Einrichtung zur Positionsbestimmung 5 ist in der Figur dargestellt. Another device for determining the position can be from a Navigation system, for example one that works according to the GPS standard Establishment. Such a device for position determination 5 is shown in the figure.

Der von der Einrichtung zur Positionsbestimmung 5 ermittelte Standort wird dann, wie oben beschrieben, von der Steuereinrichtung 3 im Speicher 4 abgelegt und für die Auswahl der TMC-Meldungen von der Steuereinheit 3 verwendet.The location determined by the position determination device 5 is then as described above, stored by the control device 3 in the memory 4 and for the selection of the TMC messages used by the control unit 3.

Die Standortbestimmung mittels Einrichtung 5 oder wie oben beschrieben mittels RDS-Informationen und/oder Empfangsfeldstärken sollte wenigstens immer nach dem Einschalten des RDS-Empfängers 2 erfolgen. Ist der RDS-Empfänger in einem Kraftfahrzeug eingebaut, sollte der Standort darüber hinaus nach dem Einschalten des RDS-Empfängers 2 oder nach dem Einschalten der Zündung des Kraftfahrzeugs fortlaufend, in bestimmten Zeitabständen, bestimmt werden.The location is determined by means of device 5 or as described above RDS information and / or reception field strengths should at least always follow the RDS receiver 2 is switched on. Is the RDS receiver in one Motor vehicle installed, the location should also after switching on of the RDS receiver 2 or after switching on the ignition of the motor vehicle be determined continuously, at certain time intervals.

Claims (6)

RDS-Empfänger (2) für die Auswertung von Verkehrshinweisen, die auf TMC-Meldungen basieren, mit mindestens einem Tuner sowie mindestens einem RDS-Decoder und einer Steuereinheit (3) mit einem Speicher (4), wobei eine Einrichtung zur Positionsbestimmung (5;2,3,4), welche von dem Tuner und dem RDS-Decoder des RDS-Empfängers (2), der Steuereinheit (3) und dem Speicher (4) gebildet wird, vorgesehen ist, die den Standort des RDS-Empfängers (2) ermittelt, der von der Steuereinheit (3) im Speicher (4) ablegt wird und nur die vom RDS-Empfänger (2) empfangenen TMC-Meldungen von der Steuereinheit (3) über eine optische und/oder akustische Ausgabeeinheit ausgegeben werden, für die bei einer Überprüfung von in den TMC-Meldungen enthaltenen Ortsinformationen mit dem im Speicher (4) abgelegten Standort durch die Steuereinheit (3) einen Zusammenhang zwischen Ortsinformation und Standort festgestellt wird, der Tuner über das gesamte Empfangsfrquenzband abgestimmt wird und alle empfangbaren Sender mit RDS-Informationen vom RDS-Decoder identifiziert werden und von der Steuereinheit (3) mit einer im Speicher (4) abgelegten Tabelle verglichen werden, wobei die Tabelle Angaben über die Sendegebiete der Sender mit RDS-Informationen enthält, wodurch der Standort des RDS-Empfängers von der Steuereinheit (3) ermittelt wird,
dadurch gekennzeichnet
daß Steuereinheit (3) den ermittelten Standort im Speicher (4) ablegt, daß ein A/D-Wandler vorgesehen ist, der den Eingangspegel der empfangenen Sender mit RDS-Informationen digitalisiert und den digitalen Wert der Steuereinheit (3) übergibt, welche den Eingangspegel mit einer weiteren im Speicher (4) abgelegten Tabelle vergleicht, die Angaben über die örtlichen Feldstärken der Sender mit RDS-Informationen in deren Sendegebiet enthält, wodurch die Standortbestimmung durch die Steuereinheit (3) verbessert wird. RDS receiver (2) for evaluating traffic information based on TMC messages with at least one tuner and at least one RDS decoder and a control unit (3) with a memory (4), a device for determining the position (5; 2,3,4), which is formed by the tuner and the RDS decoder of the RDS receiver (2), the control unit (3) and the memory (4), which determines the location of the RDS receiver (2nd ) determined, which is stored in the memory (4) by the control unit (3) and only the TMC messages received by the RDS receiver (2) are output by the control unit (3) via an optical and / or acoustic output unit for which when checking the location information contained in the TMC messages with the location stored in the memory (4) by the control unit (3) a relationship between location information and location is determined, the tuner is tuned over the entire reception frequency band and all receivable S be identified with RDS information from the RDS decoder and compared by the control unit (3) with a table stored in the memory (4), the table containing information about the transmission areas of the transmitter with RDS information, which means the location of the RDS Receiver is determined by the control unit (3),
characterized
that control unit (3) stores the determined location in memory (4), that an A / D converter is provided which digitizes the input level of the received transmitter with RDS information and transfers the digital value to the control unit (3), which transmits the input level compares with another table stored in the memory (4), which contains information about the local field strengths of the transmitters with RDS information in their transmission area, as a result of which the position determination by the control unit (3) is improved. RDS-Empfänger (2) nach Anspruch 2,
dadurch gekennzeichnet,
daß der RDS-Decoder die Sender mit RDS-Information mittels der Senderkennung identifiziert.RDS receiver (2) according to claim 2,
characterized,
that the RDS decoder identifies the transmitter with RDS information using the transmitter identifier. RDS-Empfänger (2) nach Anspruch 1,
dadurch gekennzeichnet,
daß die Einrichtung zur Positionsbestimmung (5) von einem Navigationssystem, insbesondere einem GPS-System, gebildet wird.RDS receiver (2) according to claim 1,
characterized,
that the device for determining the position (5) is formed by a navigation system, in particular a GPS system. RDS-Empfänger (2) nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Standortbestimmung durch die Steuereinheit (3) nach dem Einschalten des RDS-Empfängers (2) einmalig oder fortlaufend erfolgt.RDS receiver (2) according to one of Claims 1 to 3,
characterized,
that the location is determined once or continuously by the control unit (3) after switching on the RDS receiver (2). RDS-Empfänger (2) nach einem der Ansprüche 1 bis 4
dadurch gekennzeichnet,
daß der RDS-Empfänger (2) in einem Kraftfahrzeug eingebaut ist.RDS receiver (2) according to one of claims 1 to 4
characterized,
that the RDS receiver (2) is installed in a motor vehicle. RDS-Empfänger (2) nach Anspruch 5,
dadurch gekennzeichnet,
daß die Standortbestimmung durch die Steuereinheit (3) nach dem Einschalten der Zündung des Kraftfahrzeugs einmalig oder fortlaufend erfolgt.RDS receiver (2) according to claim 5,
characterized,
that the location is determined by the control unit (3) once or continuously after switching on the ignition of the motor vehicle.
EP98104651A 1997-03-20 1998-03-14 RDS-receiver for the evaluation of traffic information messages Withdrawn EP0866576A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997111540 DE19711540A1 (en) 1997-03-20 1997-03-20 RDS receiver for the evaluation of traffic information
DE19711540 1997-03-20

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EP0866576A2 true EP0866576A2 (en) 1998-09-23
EP0866576A3 EP0866576A3 (en) 2000-08-30

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EP1139065A2 (en) * 2000-03-30 2001-10-04 Mannesmann VDO Aktiengesellschaft Method for selecting a radio station for dynamic vehicle navigation
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