EP0790719A2 - Méthode et récepteur pour la réception et reproduction de messages routières codés numériques - Google Patents

Méthode et récepteur pour la réception et reproduction de messages routières codés numériques Download PDF

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Publication number
EP0790719A2
EP0790719A2 EP96117906A EP96117906A EP0790719A2 EP 0790719 A2 EP0790719 A2 EP 0790719A2 EP 96117906 A EP96117906 A EP 96117906A EP 96117906 A EP96117906 A EP 96117906A EP 0790719 A2 EP0790719 A2 EP 0790719A2
Authority
EP
European Patent Office
Prior art keywords
traffic
output
digitally coded
reports
decoder
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.)
Granted
Application number
EP96117906A
Other languages
German (de)
English (en)
Other versions
EP0790719B1 (fr
EP0790719A3 (fr
Inventor
Ulrich Kersken
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0790719A2 publication Critical patent/EP0790719A2/fr
Publication of EP0790719A3 publication Critical patent/EP0790719A3/fr
Application granted granted Critical
Publication of EP0790719B1 publication Critical patent/EP0790719B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/26—Arrangements for switching distribution systems
    • 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
    • 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 a method for reproducing received digitally coded traffic reports with a receiver, which is set up for receiving and outputting the digitally coded traffic reports and traffic announcements in the form of audio signals, and a receiver.
  • traffic announcements are broadcast regularly on radio stations.
  • a known traffic radio system was introduced years ago, in which identification signals by modulation of a 57 kHz carrier can be transmitted.
  • the newer radio data system enables an additional and inaudible transmission of digital data in parallel with radio programs in a data channel.
  • Specifications of the radio data system for VHF radio can be found in Tech. 3244 - E, March 1984 of the European Runfunk Union (EBU).
  • Radio receivers with suitable RDS decoders can record and decode transmitted data in addition to radio reception with the same receiver.
  • 32 groups of 104 bits each are provided for data transmission, with each of the transmitted groups being assigned a specific service.
  • Group 8a is currently intended for the transmission of digitally coded traffic reports.
  • the dissemination of these digitally coded traffic reports has various advantages over traffic announcements, for example the digitally coded traffic reports can be digitally processed in a processor of the receiver, in particular in Different languages can be output optically and / or acoustically. Even if forecasts show that the TMC system will be replaced in the long-term traffic radio, a longer transition period can be expected. During this transition period, both digitally coded traffic reports and traffic announcements will be transmitted.
  • the car radios intended for the transition period will therefore be able to use both sources of information, that is to say to receive them, decode and output them as necessary.
  • a receiver is known from U.S. Patent 4,862,513.
  • spoken traffic announcements that is to say transmitted as audio signals
  • a digitally coded traffic announcement the output of the traffic announcement has priority.
  • the digitally coded traffic reports are temporarily stored and then output.
  • This method has the disadvantage that the driver must first listen to all traffic announcements, since a selection - apart from the selection of relatively large geographical areas - is not possible, and then still has to record the digitally coded traffic reports. In unfavorable cases, the time for the traffic announcements and reports can be extremely extended, despite a possible selection of the digitally coded traffic reports.
  • the traffic announcements can relate to the traffic reports Differentiate completeness, content, language and topicality from each other, which unsettles the driver rather than being useful.
  • the invention has for its object to be able to make full use of the advantages of the TMC system despite the traffic radio system still existing.
  • This object is achieved according to the invention in that upon receipt of an identification signal which designates a traffic announcement, the reproduction of the respectively received audio signals is suppressed and at least one current stored traffic report is reproduced instead.
  • the method according to the invention has the advantage that the driver receives only the information he needs or wants to receive based on his route or a previously set selection.
  • a number of other advantages result from the TMC system, for example the up-to-dateness and security mentioned at the outset, output in the form of writing and / or language or output in a selectable language.
  • the identification signal is transmitted by modulating the 57 kHz carrier at 125 kHz or in the radio data signal by setting the bits TA and TP to "1".
  • the type of messages is limited so that messages can exist that cannot be coded or decoded in the radio receiver.
  • These messages include, for example, travel calls such as "Mr. Mustermann, traveling in Northern Germany, would like to call his sister” or personal danger warnings such as "the driver of the car with the license plate YY-XX 00 would like to go to a workshop immediately ".
  • the content of such messages is too different to be encoded with an event list.
  • Messages about locations that are not contained in a location database in the radio receiver can also not be encoded or decoded. Such messages will continue to have to be broadcast in spoken form in the future.
  • the spoken announcements cannot be heard or overheard, for example, if the user listens to music from a cassette or has silenced the radio receiver.
  • the receiver when a predetermined signal is received in the Radio data signal, which indicates a traffic announcement in the form of audio signals, the receiver is set to play this traffic announcement. On the transmission side, the transmission of the predetermined signal in the radio data signal is required if such a traffic announcement is broadcast.
  • a first receiver for receiving and reproducing digitally coded traffic reports with a receiving part, an LF part, an RDS decoder, devices for evaluating, storing and outputting the digitally coded traffic reports and a switch which switches the Input of the LF part either at the output of the receiving part or at the output of the device for outputting traffic reports, provided that the changeover switch can be controlled by the device for evaluating the digitally coded traffic reports in such a way that upon receipt of an identification signal which signals a traffic announcement referred to, the reproduction of the respectively received audio signals suppressed and instead a current stored traffic report is played.
  • the changeover switch can be controlled by the traffic radio decoder in such a way that, upon receipt of an identification signal which denotes a traffic announcement, the reproduction of the respectively received audio signals is suppressed and instead a current stored traffic report is suppressed is played.
  • the invention can be applied in a particularly advantageous manner to a receiver with two receiving parts.
  • a receiver which also comprises two RDS decoders
  • the devices for evaluating, storing and outputting the digitally coded traffic reports are connected to the output of the second receiving part via the first RDS decoder, that to the output of the first Receiving part is also connected to the second RDS decoder and that the switch can be controlled by the second RDS decoder in such a way that upon receipt of an identification signal which denotes a traffic announcement, the reproduction of the respectively received audio signals is suppressed and at least one current stored traffic report is reproduced instead .
  • Another receiver is designed such that the devices for evaluating, storing and outputting the digitally coded traffic reports are connected to the output of the second receiving part via the RDS decoder, that the traffic radio decoder is also connected to the output of the first receiving part and that the changeover switch can be controlled by the traffic radio decoder in such a way that upon receipt of a characteristic signal, which denotes a traffic announcement, the reproduction of the respectively received audio signals is suppressed and at least one current stored traffic report is reproduced instead.
  • a characteristic signal which denotes a traffic announcement
  • the respectively set transmitter is received with the aid of an antenna 1 and a receiving part 2 (tuner).
  • the received and demodulated audio signal is fed to a loudspeaker 6 via a changeover switch 4 and an LF amplifier 5.
  • this signal is called the radio signal in order to distinguish it from the output signal of an output unit 7, with the aid of which the traffic reports temporarily stored in a memory 8 are output.
  • An RDS decoder 9 is also connected to the receiving part 2 and decodes the radio data signals contained in the received and demodulated signal.
  • the digitally coded traffic reports contained in the decoded radio data signals are evaluated in an evaluation unit 10, the output of which is connected to an input of the memory 8.
  • an evaluation unit a selection of the traffic reports to be stored or output is also made, depending on the driver's input or the route provided. Since this selection as well as the evaluation and management of traffic reports are not necessary for an understanding of the invention, a further explanation of these functions is required aside.
  • the changeover switch 4 is controlled by a traffic radio decoder 11 which is also connected to the output of the receiving part 2.
  • the switch 4 is in the upper position, so that the radio signal reaches the loudspeaker 6 via the LF amplifier 5. If an announcement in the form of a modulation of the 57 kHz carrier at 125 Hz arrives at the traffic radio decoder 11, the changeover switch 4 is brought into the lower position and the output unit 7 is prompted to output the latest traffic reports stored temporarily in the memory 8.
  • the changeover switch 4 is controlled by the evaluation unit 10 as a function of the bits TP and TA of the radio data signal explained below.
  • TP and TA are provided in the radio data signal, the meaning of which is given in the following table.
  • TP TA meaning 0 0 this program does not broadcast traffic announcements, nor does it use EON to refer to programs that broadcast traffic announcements, 0 1 this program transmits EON information through another program with traffic announcements, 1 0 this program broadcasts traffic announcements but is not currently broadcasting, 1 1 this program is currently broadcasting a traffic announcement.
  • EON means Enhanced Other Network. Information about this is available in the so-called EON group of the radio data signal.
  • the two bits TP and TA are evaluated in the evaluation unit 10.
  • the flow diagram shown in FIG. 3 shows the essential parts of a program for controlling the changeover switch 4 with the aid of the evaluation unit 10 or the traffic radio decoder 11.
  • the program begins at 21 in a state in which the changeover switch 4 is in the upper position , that is switched to radio mode and in which the TMC system is activated.
  • the program then branches at 22 depending on whether the start of a traffic announcement D has been detected. If this is not the case, the program shown is ended at 23, that is to say the microprocessor provided for this program fulfills other tasks until it returns to the program shown in FIG. 3 at 21.
  • the started traffic report or the traffic reports selected for output are output at 27 until the end and the switch is brought back to the upper position at 28.
  • FIG. 4 shows receivers each with two receiving parts 2, 2 '.
  • the receiver according to FIG. 4 is otherwise constructed like the receiver according to FIG. 1.
  • the audio signal of the receiving part 2 is fed to the LF amplifier 5 via the switch 4 as in the receiver according to FIG. 1.
  • the traffic radio signal contained in the output signal of the receiving part 2 is fed to the traffic radio decoder 11.
  • the RDS signal is taken from the second receiving part 2 'and fed to the RDS decoder 9.
  • a reproduction of a traffic announcement received and stored with the second receiving part 2 'can thereby be reproduced by an announcement identifier of another transmitter which is received with the first receiving part 2.
  • a second RDS decoder 9 ' is provided, which receives the RDS signals from the first receiving part 2.
  • the second RDS decoder 9 ' controls the changeover switch 4 and the reading of the stored traffic report from the memory 7 as a function of the bits TP and TA of the radio data signal received by the first receiving part 2.

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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)
EP19960117906 1996-02-17 1996-11-08 Méthode et récepteur pour la réception et reproduction de messages routières codés numériques Expired - Lifetime EP0790719B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606009 1996-02-17
DE1996106009 DE19606009A1 (de) 1996-02-17 1996-02-17 Verfahren und Empfänger zum Empfang und zur Wiedergabe von digital codierten Verkehrsmeldungen

Publications (3)

Publication Number Publication Date
EP0790719A2 true EP0790719A2 (fr) 1997-08-20
EP0790719A3 EP0790719A3 (fr) 2001-05-09
EP0790719B1 EP0790719B1 (fr) 2007-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960117906 Expired - Lifetime EP0790719B1 (fr) 1996-02-17 1996-11-08 Méthode et récepteur pour la réception et reproduction de messages routières codés numériques

Country Status (2)

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EP (1) EP0790719B1 (fr)
DE (2) DE19606009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1241813A1 (fr) * 2001-03-15 2002-09-18 Siemens Aktiengesellschaft Procédé pour la définition des fenêtres de temps dans un récepteur radio RDS-TMC

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862513A (en) 1987-03-23 1989-08-29 Robert Bosch Gmbh Radio receiver with two different traffic information decoders

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029583A1 (de) * 1990-05-03 1991-11-14 Huber Franz F Dipl Ing Fh Bordgeraet und verfahren zum aufzeichnen und wiedergeben von verkehrsfunk-durchsagen sowie verwendung eines hilfsempfaenger-systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862513A (en) 1987-03-23 1989-08-29 Robert Bosch Gmbh Radio receiver with two different traffic information decoders

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"DIN EN 50 067.", February 1993, pages: 27
"Tech. 3244 - E.", March 1984, EUROPAEISCHEN RUNDFUNK-UNION (EBU).

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1241813A1 (fr) * 2001-03-15 2002-09-18 Siemens Aktiengesellschaft Procédé pour la définition des fenêtres de temps dans un récepteur radio RDS-TMC

Also Published As

Publication number Publication date
DE19606009A1 (de) 1997-08-21
EP0790719B1 (fr) 2007-02-14
EP0790719A3 (fr) 2001-05-09
DE59611416D1 (de) 2007-03-29

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