EP0283708A2 - Radio receiver with two traffic radio decoders - Google Patents

Radio receiver with two traffic radio decoders Download PDF

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Publication number
EP0283708A2
EP0283708A2 EP19880102231 EP88102231A EP0283708A2 EP 0283708 A2 EP0283708 A2 EP 0283708A2 EP 19880102231 EP19880102231 EP 19880102231 EP 88102231 A EP88102231 A EP 88102231A EP 0283708 A2 EP0283708 A2 EP 0283708A2
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EP
European Patent Office
Prior art keywords
traffic
radio
decoder
rds
information
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Application number
EP19880102231
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German (de)
French (fr)
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EP0283708B1 (en
EP0283708A3 (en
Inventor
Peter Brägas
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Robert Bosch GmbH
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Robert Bosch GmbH
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Priority to AT88102231T priority Critical patent/ATE93640T1/en
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Publication of EP0283708A3 publication Critical patent/EP0283708A3/en
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Publication of EP0283708B1 publication Critical patent/EP0283708B1/en
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    • 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
    • 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
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
    • 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
    • H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related 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 radio receiver with an LF amplifier and with at least one traffic radio decoder for received traffic information according to the preamble of claim 1.
  • a 57 kHz carrier is provided for the station identification, which serves to identify all traffic radio stations.
  • the 57 kHz carrier is modulated with one of six possible range frequencies (letters A-F). In this way, an identification is made of the traffic radio area to which the relevant traffic radio station belongs.
  • a second modulation of 125 Hz on the 57 kHz carrier is used as the announcement identifier during a traffic announcement to identify the relevant traffic information.
  • a special decoder is required within the radio receiver for the evaluation and processing of the three identifiers or characteristic frequencies mentioned, and the known system advantageously allows the construction of very inexpensive traffic radio decoders which are able to give the driver the ver inevitably bring sweeping instructions to your hearing.
  • An additional receiver in the car radio searches for the responsible traffic radio station using the transmitter and area identification. By evaluating the announcement identifier, the driver is given the traffic information acoustically even if he hears another program or music from a cassette, for example.
  • a traffic radio decoder for processing digital signals has therefore already been described, the digital signals identifying the traffic information, and the digital signals being obtained by demodulating an auxiliary carrier on which the digital signals are modulated (magazine "Internationales Verledgement”; Special print from issue 5/85; Peter Brägas “Control and information systems in motor vehicles - a contribution to the improvement of traffic flow and traffic safety", pages 2 - 8).
  • the RDS system is intended for the transmission of digital signals on a subcarrier of 57 kHz via VHF radio transmitter, with a double sideband amplitude modulation of the 57 kHz carrier (carrier is suppressed) with the biphase-coded data signal. Due to the biphase coding, no spectral lines appear in the vicinity of the carrier, so that there is compatibility with the other system, which can thereby be further developed in an advantageous manner.
  • the basic idea behind the alternative of the RDS system is to transmit digital memory addresses or code words, the components of structures of traffic information being stored in the radio receiver or in the traffic radio decoder under the respective addresses and ready for display and for display playback using a speech synthesizer.
  • the focus is therefore not on sending a traffic announcement, but on the transmission of digital signals which represent certain traffic announcements, so that in addition to the RDS system, other digital transmission systems can also be considered in principle.
  • the RDS system is only at the beginning of a technically practical introduction, while - as already mentioned above - the first system has been in use for a long time. Since the RDS system has not yet been introduced correctly, and since the first system will not be replaced overnight, but rather will still be used during a long transition phase, the problem with the already existing and also with the newly manufactured radio devices is that the Users can receive only traffic messages from the first system or only RDS traffic messages.
  • the object of the invention is to create a radio receiver to avoid the disadvantages described, which enables the listener to receive all traffic reports, in particular during the transition phase to the RDS system.
  • the invention is based on the fact that, in addition to the new RDS system, the tried-and-tested other system will continue to be used during a long transition phase, and that in certain areas only this system will still be used. Nevertheless, the traffic reports and the traffic information should reach the listener regardless of the type of system, even if the respective traffic information is broadcast in parallel according to the first system and the RDS system.
  • both a traffic radio decoder of the first system and an RDS traffic radio decoder is provided in the radio device according to the invention, and that either either the traffic radio decoder of the first system or the RDS traffic radio decoder by means of a selector switch to the Amplifier of the radio receiver can be switched through, it is ensured that, given the parallelism of both systems, the radio receiver can still be used universally.
  • the selector switch ensures that traffic information received according to the first system on the one hand and the RDS system on the other hand is not heard in parallel, which would completely confuse the driver. Rather, it is ensured that only the traffic announcement of the first system or the RDS traffic announcement is brought to the listener or the driver. Since the radio receiver can receive both systems, it is ensured during the transition phase that no traffic information is lost.
  • This solution is also particularly advantageous because the traffic information can be saved using the RDS system. It is therefore possible to first reproduce the traffic information of the first system acoustically, and then, if necessary, the parallel RDS traffic information can then also be called up from the memory and played back via a speech synthesizer.
  • the radio receiver designated as a whole by the reference number 10, has a receiving antenna 12 for receiving the programs broadcast by a traffic radio station or also by another station.
  • the radio receiver 10 comprises a mixer stage 14 which is controlled by an oscillator 16 and to which an IF amplifier 18 and a demodulator 20 are connected.
  • the demodulator 20 is connected via a volume control 34 to an LF output stage 36, via whose loudspeaker 38 the demodulated signals can be reproduced.
  • the radio receiver described so far is known per se.
  • a first traffic radio decoder 22 is connected to the demodulator 20, the output of which leads to a switching stage 24.
  • the switch of the switching stage 24 is closed, while the program just heard via the loudspeaker 38 is interrupted by the transmitter. After the traffic announcement has ended, the system automatically switches back to the current radio program.
  • the switching stage 24 therefore interacts with a selector switch 26 which has three switch positions and can therefore connect the volume control 34 to three different contacts.
  • the demodulated radio signal reaches the LF output stage 36 via the volume control 34.
  • the middle switch position of the selector switch 26 only a traffic announcement from the first traffic decoder 22 is heard.
  • the output of the demodulator 20 leads to an RDS traffic radio decoder 28, which is followed by a memory 30.
  • a memory synthesizer 32 follows the memory 30, whose output is connected to the lower contact pole of the selector switch 26, so that in the lower switch position of the selector switch 26 the speech synthesizer 32 is connected to the LF output stage 36 via the volume control 34.
  • the new radio receiver 10 is additionally provided with an RDS traffic radio decoder 28 in addition to the first traffic radio decoder 22, it is possible with the aid of the selector switch 26 to send either the first traffic radio decoder 22 or the RDS traffic radio decoder 28 to the To switch on the NF output stage 36, in the latter case the synthetic speech of the RDS traffic radio decoder 28 is reproduced via the speech synthesizer 32.
  • the user or the driver can be brought to listen to the traffic announcement that is currently being received with the aid of the automatically controllable selector switch 26, it then being immaterial whether the traffic announcement is transmitted according to the first system or according to the RDS system and Will be received. It is thus ensured that all traffic messages em during a transition phase in which both systems coexist can be caught.
  • the first traffic radio decoder 22 is primarily connected to the LF output stage 36.
  • the RDS traffic information received simultaneously from the RDS traffic radio decoder 28 initially remains in the memory 30 and is only switched to the LF output stage 36 after the traffic information has ended, so that the traffic information is only then reproduced via the speech synthesizer 32.
  • the LF output stage 36 is connected here to the volume control 34 via a decoupling resistor 40.
  • the last-described operating mode with simultaneous presence of both a first traffic notice and an RDS traffic notice is indicated in FIG. 2 by the dashed lines 46.
  • the switches 42 and 44 are open, so that the em p Huaweie radio program and the speech synthesizer 32 are switched off by the LF power amplifier 36.
  • switch 42 In the case of a subsequent transmission of a normal radio program, switch 42 according to FIG. 2 is closed, while switches 24 and 44 are open. When an RDS traffic information is transmitted, only switch 44 is closed, while switches 42 and 24 are open. It is possible to route a stored RDS traffic message to the LF output stage 36 via the speech synthesizer 32 and to make it audible via the loudspeaker 38.

Abstract

Zum Empfang von Verkehrsnachrichten sind die Rundfunkempfänger mit einem bekannten Verkehrsfunk-Decoder für ein Autofahrerinformations- und Warnsystem ausgerüstet, der es ermöglicht, das laufende Programm zu unterbrechen und die empfangene Verkehrsnachricht akustisch wiederzugeben. In Weiterentwicklung dieses ersten Systems gibt es auch RDS-Verkehrsfunk-Decoder (RDS = Radio Data System), und es ist damit zu rechnen, daß langfristig auf das RDS-System übergegangen wird. Um während der Übergangsphase, in welcher Verkehrsnachrichten sowohl nach dem ersten System als auch nach dem RDS-System gesendet werden, einen sicheren Empfang der jeweiligen Verkehrsnachrichten zu ermöglichen, besitzt der vorgeschlagene Rundfunkempfänger zusätzlich zu dem ersten Verkehrsfunk-Decoder einen RDS-Verkehrsfunk-Decoder. Mittels eines Wahlschalters kann entweder der erste oder der RDS-Verkehrsfunk-Decoder an die NF-Endstufe des Rundfunkempfängers durchgeschaltet werden. Die Durchschaltung kann automatisch in Abhängigkeit der jeweils empfangenen Verkehrsnachricht erfolgen, und es ist auch möglich, bei gleichzeitigem Vorliegen beider Signale vorrangig den ersten Verkehrsfunk-Decoder an die NF-Endstufe zu schalten und den RDS-Verkehrshinweis so lange zu speichern. Nach dem Ende des Verkehrshinweises wird anschließend der gespeicherte RDS-Verkehrshinweis zu Gehör gebracht.To receive traffic news, the radio receivers are equipped with a known traffic radio decoder for a driver information and warning system, which enables the current program to be interrupted and the traffic message received to be reproduced acoustically. As a further development of this first system, there are also RDS traffic radio decoders (RDS = Radio Data System), and it can be expected that the RDS system will be adopted in the long term. In order to enable secure reception of the respective traffic news during the transition phase, in which traffic news are sent both according to the first system and the RDS system, the proposed radio receiver has an RDS traffic radio decoder in addition to the first traffic radio decoder. Using a selector switch, either the first or the RDS traffic radio decoder can be switched through to the LF output stage of the radio receiver. The switching can take place automatically depending on the traffic message received in each case, and it is also possible, if both signals are present at the same time, to switch the first traffic radio decoder to the LF output stage and to store the RDS traffic information for as long as this. After the end of the traffic information, the stored RDS traffic information is then heard.

Description

Die Erfindung betrifft einen Rundfunkempfänger mit ei­nem NF-Verstärker und mit mindestens einem Verkehrs­funkdecoder für empfangene Verkehrshinweise gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a radio receiver with an LF amplifier and with at least one traffic radio decoder for received traffic information according to the preamble of claim 1.

Zur Verbesserung des Verkehrsablaufs und der Verkehrs­sicherheit ist es bekannt, über bestimmte Rundfunk­sender (Verkehrsfunksender) Verkehrshinweise zu senden, die grundsätzlich mit jedem Rundfunkempfänger empfangen werden können. Um insbesondere dem Autofahrer das Auf­suchen des für seinen örtlichen Bereich zuständigen Verkehrsfunksenders zu erleichtern, wird schon seit längerer Zeit ein weit verbreitetes Kennungssystem (Auto­ fahrer-Rundfunk-Information) verwendet, welches drei Kennfrequenzen verwendet, die im UKW-Bereich zusätz­lich zur Nutzmodulation des FM-Verkehrsfunksenders aufmoduliert werden. Dieses System wird bereits in mehreren europäischen Ländern eingesetzt.To improve the flow of traffic and traffic safety, it is known to send traffic information via certain radio stations (traffic radio stations), which can in principle be received by any radio receiver. In order to make it easier for the driver, in particular, to find the traffic radio station responsible for his local area, a widely used identification system (car Driver broadcast information) is used, which uses three characteristic frequencies that are modulated in the FM area in addition to the useful modulation of the FM traffic radio station. This system is already used in several European countries.

Für die Senderkennung ist dabei ein 57-kHz-Träger vor­gesehen, der zur Kennzeichnung aller Verkehrsfunksender dient. Zum Zwecke der Bereichskennung ist der 57-kHz-­Träger mit einer von sechs möglichen Bereichsfrequenzen (Buchstaben A-F) moduliert. Auf diese Weise erfolgt eine Kennzeichnung darüber, zu welchem Verkehrsfunkbereich der betreffende Verkehrsfunksender gehört.A 57 kHz carrier is provided for the station identification, which serves to identify all traffic radio stations. For the purpose of range identification, the 57 kHz carrier is modulated with one of six possible range frequencies (letters A-F). In this way, an identification is made of the traffic radio area to which the relevant traffic radio station belongs.

Als Durchsagekennung wird eine zweite Modulation von 125 Hz auf dem 57-kHz-Träger während einer Verkehrs­durchsage zur Kennzeichnung des betreffenden Verkehrs­hinweises benutzt.A second modulation of 125 Hz on the 57 kHz carrier is used as the announcement identifier during a traffic announcement to identify the relevant traffic information.

Für die Auswertung und Verarbeitung der genannten drei Kennungen bzw. Kennfrequenzen wird innerhalb des Rund­funkempfängers ein besonderer Decoder benötigt, und das bekannte System erlaubt in vorteilhafter Weise den Aufbau von sehr preiswerten Verkehrsfunk-De­codern, die in der Lage sind, dem Autofahrer die Ver­ kehrshinweise zwangsläufig zu Gehöhr zu bringen. Da­bei sucht sich ein zusätzlicher Empfänger im Autoradio mit Hilfe der Sender- und Bereichskennung den zustän­digen Verkehrsfunksender. Durch Auswertung der Durch­sagekennung wird dem Autofahrer der Verkehrshinweis auch dann akustisch vermittelt, wenn er z.B. ein an­deres Programm oder Musik von einer Kassette hört.A special decoder is required within the radio receiver for the evaluation and processing of the three identifiers or characteristic frequencies mentioned, and the known system advantageously allows the construction of very inexpensive traffic radio decoders which are able to give the driver the ver inevitably bring sweeping instructions to your hearing. An additional receiver in the car radio searches for the responsible traffic radio station using the transmitter and area identification. By evaluating the announcement identifier, the driver is given the traffic information acoustically even if he hears another program or music from a cassette, for example.

Wegen seiner vielen Vorteile hat sich das obige System inzwischen überwiegend als Kennungssystem für Verkehrs­hinweise durchgesetzt. Allerdings lassen sich mit dem bekannten System noch nicht alle Möglichkeiten voll ausschöpfen. So muß das von dem Autofahrer über das Autoradio gerade gehörte Rundfunkprogramm für die Zeit­dauer der Verkehrsdurchsage zwangsläufig unterbrochen werden, was manchmal als störend empfunden wird. Außer­dem ist die Anzahl der Verkehrshinweise wegen der er­forderlichen Druchsagezeit und auch wegen einer bei längeren Durchsagezeiten zu beobachtenden nachlassenden Aufmerksamkeit des Autofahrers begrenzt. Bei möglichen Verkehrsdurchsagen in Fremdsprachen (für Durchreise­verkehr während der Urlaubszeit) vervielfacht sich die Durchsagezeit entsprechend.Because of its many advantages, the above system has now predominantly established itself as an identification system for traffic information. However, not all possibilities can be fully exploited with the known system. The radio program just heard by the driver via the car radio must inevitably be interrupted for the duration of the traffic announcement, which is sometimes perceived as disturbing. In addition, the number of traffic information is limited because of the required announcement time and also due to a decreasing attention of the driver to be observed during longer announcement times. In the case of possible traffic announcements in foreign languages (for transit traffic during the holiday period), the announcement time is multiplied accordingly.

Zur weiteren Verbesserung eines optimalen Verkehrsfunk­ systems ist daher auch schon ein Verkehrsfunk-Decoder zur Verarbeitung digitaler Signale beschrieben worden, wobei die digitalen Signale die Verkehrshinweise kenn­zeichnen, und wobei die digitalen Signale durch De­modulation eines Hilfsträgers erhalten werden, auf dem die digitalen Signale aufmoduliert sind (Zeitschrift "Internationales Verkehrswesen"; Sonderdruck aus Heft 5/85; Peter Brägas" Leit- und Informationssysteme im Kraftfahrzeug - ein Beitrag zur Verbesserung des Ver­kehrsablaufs und der Verkehrssicherheit", Seite 2 - 8).To further improve optimal traffic information systems, a traffic radio decoder for processing digital signals has therefore already been described, the digital signals identifying the traffic information, and the digital signals being obtained by demodulating an auxiliary carrier on which the digital signals are modulated (magazine "Internationales Verkehrwesen"; Special print from issue 5/85; Peter Brägas "Control and information systems in motor vehicles - a contribution to the improvement of traffic flow and traffic safety", pages 2 - 8).

Hierbei handelt es sich um einen RDS-Verkehrsfunk-De­coder, wobei die digitalen Signale nach dem RDS-Sys­tem (Radio-Data-System) mit RDS-Signalen übertragen werden. Das RDS-System ist für die Übertragung von digitalen Signalen auf einem Unterträger von 57 kHz über UKW-Rundfunksender vorgesehen, wobei eine Zwei­seitenbandamplitudenmodulation des 57-kHz-Trägers (Träger wird unterdrückt) mit dem biphase-codierten Datensignal erfolgt. Durch die Biphase-Codierung er­scheinen in der Nähe des Trägers keine Spektrallinien, so daß die Kompatibilität mit dem anderen System gegeben ist, welches dadurch in vorteilhafter Weise weiter aus­gestaltet werden kann.This is an RDS traffic radio decoder, with the digital signals being transmitted in accordance with the RDS system (Radio Data System) with RDS signals. The RDS system is intended for the transmission of digital signals on a subcarrier of 57 kHz via VHF radio transmitter, with a double sideband amplitude modulation of the 57 kHz carrier (carrier is suppressed) with the biphase-coded data signal. Due to the biphase coding, no spectral lines appear in the vicinity of the carrier, so that there is compatibility with the other system, which can thereby be further developed in an advantageous manner.

Der grundlegende Gedanke nach der Alternative des RDS-­Systems besteht darin, digitale Speicheradressen bzw. Codewörter zu übertragen, wobei im Rundfunkempfänger bzw. im Verkehrsfunk-Decoder unter den jeweiligen Adressen die Bestandteile von Strukturen von Verkehrshinweisen abrufbereit gespeichert sind und für eine Anzeige bzw. zu einer Wiedergabe mittels eines Sprachsynthesizers zur Verfügung stehen. Im Vordergrund steht also nicht das Aussenden eines Verkehrshinweises, sondern die Über­tragung digitaler Signale, die bestimmte Verkehrshin­weise repräsentieren, so daß neben dem RDS-System auch andere digitale Übertragungssystme grundsätzlich in Be­tracht kommen können.The basic idea behind the alternative of the RDS system is to transmit digital memory addresses or code words, the components of structures of traffic information being stored in the radio receiver or in the traffic radio decoder under the respective addresses and ready for display and for display playback using a speech synthesizer. The focus is therefore not on sending a traffic announcement, but on the transmission of digital signals which represent certain traffic announcements, so that in addition to the RDS system, other digital transmission systems can also be considered in principle.

Von Bedeutung ist nämlich vornehmlich die Erkenntnis, daß sich die Verkehrshinweise trotz ihrer möglichen Vielzahl standardisieren und in bestimmte Standard texte einteilen lassen. Dies führt im Zusammenhang mit der digitalen Signalübertragung zu bedeutsamen Vorteilen, denn es ist nunmehr auf einfache Weise mög­lich, bestimmten Bestandteilen der standardardisierten Verkehrshinweise Adresssignale zuzuordnen und in einem Speicher zu speichern. Von dem Verkehrsfunksender brau­chen dann lediglich bestimmte digitale Adresssignale innerhalb eines RDS-Signals gesendet zu werden, so daß im Ergebnis ein Verkehrshinweis nur in Form einer Speicheradresse übertragen wird.Of particular importance is the knowledge that the traffic information, despite its possible number, can be standardized and divided into certain standard texts. This leads to significant advantages in connection with digital signal transmission, because it is now possible in a simple manner to assign address signals to certain components of the standardized traffic information and to store them in a memory. The traffic radio transmitter then only needs to send certain digital address signals within an RDS signal, so that as a result, traffic information is only transmitted in the form of a memory address.

In der Praxis steht das RDS-System allerdings erst am Beginn einer technisch praktikablen Einführung, während - wie weiter oben schon erwähnt - das erste System schon seit langer Zeit eingeführt ist und an­gewendet wird. Da das RDS-System noch nicht richtig eingeführt ist, und da das erste System nicht von heu­te auf morgen abgelöst, sondern vielmehr noch während einer langen Übergangsphase verwendet werden wird, besteht das Problem bei den schon vorhandenen und auch bei den neugefertigten Rundfunkgeräten, daß der Benutzer entweder nur Verkehrsnachrichten des ersten Systems oder nur RDS-Verkehrsnachrichten empfangen kann.In practice, however, the RDS system is only at the beginning of a technically practical introduction, while - as already mentioned above - the first system has been in use for a long time. Since the RDS system has not yet been introduced correctly, and since the first system will not be replaced overnight, but rather will still be used during a long transition phase, the problem with the already existing and also with the newly manufactured radio devices is that the Users can receive only traffic messages from the first system or only RDS traffic messages.

Ferner ist zu berücksichtigen, daß es auch in Zukunft Länder geben wird, in denen nach wie vor ausschließ­lich das erste System angewandt wird, bzw. wo die Über­gangsphase auf das RDS-System extrem lange dauern wird.It should also be borne in mind that there will continue to be countries in which only the first system will still be used, or where the transition phase to the RDS system will take an extremely long time.

Hier besteht nun die Gefahr, daß bestimmte Verkehrs­meldungen den Hörer bzw. den Autofahrer nicht errei­chen, weil der benutzte Rundfunkempfänger nicht ent­ sprechend dem jeweiligen System ausgelegt ist.Here there is now the danger that certain traffic reports will not reach the listener or driver because the radio receiver used is not ent is designed according to the respective system.

Der Erfindung liegt die Aufgabe zugrunde, zur Vermei­dung der beschriebenen Nachteile einen Rundfunkem­pfänger zu schaffen, der dem Hörer die Möglichkeit bietet, insbesondere während der Übergangsphase auf das RDS-System alle Verkehrsmeldungen zu empfangen.The object of the invention is to create a radio receiver to avoid the disadvantages described, which enables the listener to receive all traffic reports, in particular during the transition phase to the RDS system.

Dieses Ziel erreicht die Erfindung bei dem im Ober­begriff des Anspruchs 1 genannten Rundfunkempfänger durch die im kennzeichnenden Teil aufgeführten Merk­male.This object is achieved by the radio receiver mentioned in the preamble of claim 1 by the features listed in the characterizing part.

Die Erfindung geht davon aus, daß während einer lan­gen Übergangsphase neben dem neuen RDS-System das bewährte andere System weiterhin verwendet wird, und daß in bestimmten Gebieten auch nach wie vor aus­schließlich nur auf dieses System zurückgegriffen wird. Gleichwohl sollen die Verkehrsmeldungen und die Verkehrshinweise unabhängig von der Art des Systems den Hörer erreichen, und zwar auch dann, wenn die jeweiligen Verkehrshinweise parallel nach dem ersten System und nach dem RDS-System ausgestrahlt werden.The invention is based on the fact that, in addition to the new RDS system, the tried-and-tested other system will continue to be used during a long transition phase, and that in certain areas only this system will still be used. Nevertheless, the traffic reports and the traffic information should reach the listener regardless of the type of system, even if the respective traffic information is broadcast in parallel according to the first system and the RDS system.

Dadurch, daß bei dem erfindungsgemäßen Rundfunkgerät sowohl ein Verkehrsfunk-Decoder des ersten Systems als auch ein RDS-Verkehrsfunk-Decoder vorgesehen ist, und daß ferner wahlweise entweder der Verkehrsfunk-Decoder des ersten Systems oder der RDS-Verkehrsfunk-Decoder mittel eines Wahlschalters an den Verstärker des Rund­funkempfängers durchgeschaltet werden kann, ist gewähr­leistet, daß bei der angenommenen Parallelität beider Systeme der Rundfunkempfänger weiterhin universell ein­setzbar ist.Characterized in that both a traffic radio decoder of the first system and an RDS traffic radio decoder is provided in the radio device according to the invention, and that either either the traffic radio decoder of the first system or the RDS traffic radio decoder by means of a selector switch to the Amplifier of the radio receiver can be switched through, it is ensured that, given the parallelism of both systems, the radio receiver can still be used universally.

Durch den Wahlschalter ist dabei gewährleistet, daß empfangene Verkehrshinweise nach dem ersten System einer­seits und dem RDS-System andererseits nicht parallel zu Gehör gebracht werden, was den Autofahrer vollständig verwirren würde. Vielmehr ist sichergestellt, daß dem Hörer bzw. dem Autofahrer jeweils nur die Verkehrsfunk­meldung des ersten Systems oder die RDS-Verkehrsfunk­meldung zu Gehör gebracht wird. Da der Rundfunkempfänger beide Systeme empfangen kann, ist während der geschil­derten Übergangsphase gewährleistet, daß keine Verkehrs­hinweise verloren gehen.The selector switch ensures that traffic information received according to the first system on the one hand and the RDS system on the other hand is not heard in parallel, which would completely confuse the driver. Rather, it is ensured that only the traffic announcement of the first system or the RDS traffic announcement is brought to the listener or the driver. Since the radio receiver can receive both systems, it is ensured during the transition phase that no traffic information is lost.

In einer zweckmäßigen Ausgestaltung der Erfindung ist es möglich, bei gleichzeitigem Empfang eines Ver­ kehrshinweise sowohl durch den ersten Verkehrsfunk-De­coder als auch durch den RDS-Verkehrsfunk Decoder den ersten Verkehrsfunk-Decoder, der während der langen Übergangsphase nach wie vor Priorität haben wird, vor­rangig an den Verstärker anzuschalten.In an expedient embodiment of the invention, it is possible, while receiving a Ver Turnaround instructions to connect the first traffic radio decoder, which will still have priority during the long transition phase, to the amplifier, both by the first traffic radio decoder and by the RDS traffic radio decoder.

Diese Lösung ist auch deshalb von besonderem Vorteil, weil die Verkehrshinweise nach dem RDS-System ge­speichert werden können. Daher ist es möglich, zu­nächst den Verkehrshinweis des ersten Systems akustisch wiederzugeben, und bei Bedarf kann dann anschließend auch der parallele RDS-Verkehrshinweis aus dem Speicher abgerufen und über einen Sprachsynthesizer wiederge­geben werden.This solution is also particularly advantageous because the traffic information can be saved using the RDS system. It is therefore possible to first reproduce the traffic information of the first system acoustically, and then, if necessary, the parallel RDS traffic information can then also be called up from the memory and played back via a speech synthesizer.

Andere zweckmäßige Ausgestaltungen und vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung sowie der Zeichnung.Other expedient refinements and advantageous developments of the invention result from the subclaims and the following description and the drawing.

Anhand der in der Zeichnung dargestellten Ausführungs­beispiele wird die Erfindung zum besseren Verständnis nachfolgend näher erläutert. Es zeigen:

  • Fig. 1 ein schematisches Blockschalt­ bild eines Rundfunkempfängers mit einem ersten Verkehrsfunk­Decoder und einem RDS-Ver-­kehrsfunk-Decoder, und
  • Fig. 2 das Blockschaltbild einer ab­gewandelten Ausführungsform eines Rundfunkempfängers ge­mäß Fig. 1.
On the basis of the exemplary embodiments shown in the drawing, the invention is explained in more detail below for better understanding. Show it:
  • Fig. 1 is a schematic block circuit image of a radio receiver with a first traffic radio decoder and an RDS traffic radio decoder, and
  • FIG. 2 shows the block diagram of a modified embodiment of a radio receiver according to FIG. 1.

Der als Ganzes mit der Bezugsziffer 10 bezeichnete Rundfunkempfänger besitzt eine Empfangsantenne 12 zum Empfang der von einem Verkehrsfunksender oder auch von einem anderen Sender ausgestrahlten Sendun­gen. In üblicher Weise umfaßt der Rundfunkempfänger 10 eine Mischstufe 14, die von einem Oszillator 16 angesteuert wird, und an die sich ein ZF-Verstärker 18 und ein Demodulator 20 anschließen.The radio receiver, designated as a whole by the reference number 10, has a receiving antenna 12 for receiving the programs broadcast by a traffic radio station or also by another station. In a conventional manner, the radio receiver 10 comprises a mixer stage 14 which is controlled by an oscillator 16 and to which an IF amplifier 18 and a demodulator 20 are connected.

Der Demodulator 20 ist über einen Lautstärkeregler 34 mit einer NF-Endstufe 36 verbunden, über dessen Laut­sprecher 38 die demodulierten Signale wiedergegeben werden können. Der soweit beschriebenen Rundfunkem­pfänger ist an sich bekannt.The demodulator 20 is connected via a volume control 34 to an LF output stage 36, via whose loudspeaker 38 the demodulated signals can be reproduced. The radio receiver described so far is known per se.

An den Demodulator 20 ist ein erster Verkehrsfunk-De­coder 22 angeschlossen, dessen Ausgang zu einer Schalt­stufe 24 führt. Bei Übertragung einer Verkehrsmeldung ist der Schalter der Schaltstufe 24 geschlossen, wäh­rend das über den Lautsprecher 38 gerade gehörte Pro­gramm senderseitig unterbrochen ist. Nach Beendigung der Verkehrsdurchsage wird automatisch wieder auf das laufende Rundfunkprogramm umgeschaltet.A first traffic radio decoder 22 is connected to the demodulator 20, the output of which leads to a switching stage 24. When a traffic announcement is transmitted, the switch of the switching stage 24 is closed, while the program just heard via the loudspeaker 38 is interrupted by the transmitter. After the traffic announcement has ended, the system automatically switches back to the current radio program.

Die Schaltstufe 24 wirkt daher mit einem Wahlschalter 26 zusammen, der drei Schalterstellungen besitzt und den Lautstärkeregler 34 daher an drei unterschiedliche Kontakte anschließen kann.The switching stage 24 therefore interacts with a selector switch 26 which has three switch positions and can therefore connect the volume control 34 to three different contacts.

In der oberen dargestellten Lage gelangt das demodu­lierte Rundfunksignal über den Lautstärkenregler 34 zur NF-Endstufe 36. In der mittleren Schalterstellung des Wahlschalters 26 wird nur eine Verkehrsfunkmel­dung des ersten Verkehrsfunk-Decoders 22 zu Gehör ge­bracht.In the position shown above, the demodulated radio signal reaches the LF output stage 36 via the volume control 34. In the middle switch position of the selector switch 26, only a traffic announcement from the first traffic decoder 22 is heard.

Parallel zum Verkehrsfunk-Decoder 22 führt der Aus­gang des Demodulators 20 zu einem RDS-Verkehrsfunk-­Decoder 28, dem ein Speicher 30 nachgeschaltet ist. Auf den Speicher 30 folgt ein Sprachsynthesizer 32, dessen Ausgang mit dem unteren Kontaktpol des Wahl­schalters 26 verbunden ist, so daß in der unteren Schalterstellung des Wahlschalters 26 der Sprachsynthe­sizer 32 über den Lautstärkeregler 34 mit der NF-End­stufe 36 verbunden ist.In parallel to the traffic radio decoder 22, the output of the demodulator 20 leads to an RDS traffic radio decoder 28, which is followed by a memory 30. A memory synthesizer 32 follows the memory 30, whose output is connected to the lower contact pole of the selector switch 26, so that in the lower switch position of the selector switch 26 the speech synthesizer 32 is connected to the LF output stage 36 via the volume control 34.

Da der neue Rundfunkempfänger 10 neben dem ersten Ver­kehrsfunk-Decoder 22 zusätzlich mit einem RDS-Verkehrs­funk-Decoder 28 versehen ist, besteht mit Hilfe des Wahlschalters 26 die Möglichkeit, entweder den ersten Verkehrsfunk-Decoder 22 oder den RDS-Verkehrsfunk-­Decoder 28 an die NF-Endstufe 36 anzuschalten, wobei im letzteren Fall die synthetische Sprache des RDS-­Verkehrsfunk-Decoders 28 über den Sprachsynthesizer 32 wiedergegeben wird.Since the new radio receiver 10 is additionally provided with an RDS traffic radio decoder 28 in addition to the first traffic radio decoder 22, it is possible with the aid of the selector switch 26 to send either the first traffic radio decoder 22 or the RDS traffic radio decoder 28 to the To switch on the NF output stage 36, in the latter case the synthetic speech of the RDS traffic radio decoder 28 is reproduced via the speech synthesizer 32.

Somit kann also dem Benutzer bzw. dem Autofahrer mit Hilfe des automatisch steuerbaren Wahlschalters 26 jeweils diejenige Verkehrsfunkmeldung zu Gehör ge­bracht werden, die gerade empfangen wird, wobei es dann gleichgültig ist, ob die Verkehrsfunkmeldung nach dem ersten System oder nach dem RDS-System übertragen und empfangen wird. Es ist also sichergestellt, daß wäh­rend einer Übergangsphase, in welcher beide Systeme nebeneinander bestehen, alle Verkehrsnachrichten em­ pfangen werden konnen.Thus, the user or the driver can be brought to listen to the traffic announcement that is currently being received with the aid of the automatically controllable selector switch 26, it then being immaterial whether the traffic announcement is transmitted according to the first system or according to the RDS system and Will be received. It is thus ensured that all traffic messages em during a transition phase in which both systems coexist can be caught.

Es ist auch der Fall denkbar, daß gleichzeitig sowohl Verkehrshinweise nach dem ersten System als auch nach dem RDS-System vorliegen und empfangen werden. Für diesen Fall ist in einer zweckmäßigen Ausgestaltung der Er­findung gemäß Fig. 2 vorgesehen, vorrangig den ersten Verkehrsfunk-Decoder 22 an die NF-Endstufe 36 zu schal­ten.It is also conceivable that both traffic information according to the first system and according to the RDS system are available and received at the same time. For this case, in an expedient embodiment of the invention according to FIG. 2, the first traffic radio decoder 22 is primarily connected to the LF output stage 36.

Der gleichzeitig empfangene RDS-Verkehrshinweis des RDS-­Verkehrsfunk-Decoders 28 verbleibt zunächst im Spei­cher 30 und wird erst nach dem Ende des Verkehrs­hinweises an die NF-Endstufe 36 geschaltet, so daß erst dann die Wiedergabe des Verkehrshinweises über den Sprachsynthesizer 32 erfolgt. Die NF-Endstufe 36 ist hier über einen Entkoppelungswiderstand 40 mit dem Lautstärkeregler 34 verbunden.The RDS traffic information received simultaneously from the RDS traffic radio decoder 28 initially remains in the memory 30 and is only switched to the LF output stage 36 after the traffic information has ended, so that the traffic information is only then reproduced via the speech synthesizer 32. The LF output stage 36 is connected here to the volume control 34 via a decoupling resistor 40.

Die zuletzt beschriebene Betriebsart bei gleichzeiti­gem Vorliegen sowohl eines ersten Verkehrshinweises als auch eines RDS-Verkehrshinweises ist in Fig. 2 durch die gestrichelt gezeichneten Linien 46 angedeutet. Während der Wiedergabe des ARI-Verkehrshinweises sind die Schalter 42 und 44 geöffnet, so daß das gerade em­ pfangene Rundfunkprogram und der Sprachsynthesizer 32 von der NF-Endstufe 36 abgeschaltet sind.The last-described operating mode with simultaneous presence of both a first traffic notice and an RDS traffic notice is indicated in FIG. 2 by the dashed lines 46. During the playback of the ARI traffic information, the switches 42 and 44 are open, so that the em pfangene radio program and the speech synthesizer 32 are switched off by the LF power amplifier 36.

Bei einer anschließenden Übertragung eines normalen Rundfunkprogrammes ist der Schalter 42 gemäß Fig. 2 geschlossen, während die Schalter 24 und 44 offen sind. Bei einer Übertragung eines RDS-Verkehrshin­weises ist nur der Schalter 44 geschlossen, während die Schalter 42 und 24 geöffnet sind. Dabei besteht die Möglichkeit, einen gespeicherten RDS-Verkehrs­hinweis über den Sprachsynthesizer 32 zur NF-Endstu­fe 36 zu führen und über den Lautsprecher 38 akustisch zu Gehör zu bringen.In the case of a subsequent transmission of a normal radio program, switch 42 according to FIG. 2 is closed, while switches 24 and 44 are open. When an RDS traffic information is transmitted, only switch 44 is closed, while switches 42 and 24 are open. It is possible to route a stored RDS traffic message to the LF output stage 36 via the speech synthesizer 32 and to make it audible via the loudspeaker 38.

Claims (6)

1. Rundfunkempfänger mit einem NF-Verstärker und mindestens einem Verkehrsfunk-Decoder für empfan­gene Verkehrshinweise, insbesondere Autoradio entweder mit einem ersten Verkehrsfunk-Decoder zur Verarbei­tung von Schaltsignalen eines bekannten Autofahrer­informations- und Warnsystems oder mit einem zweiten Verkehrsfunk-Decoder zur Verarbeitung digitaler Infor­mationen, welche Verkehrshinweise kennzeichnen (RDS-­Verkehrsfunk-Decoder; RDS = Radio Data System), wobei die Signale bzw. Informationen durch Demodulation eines Hilfsträgers erhalten werden, dadurch gekennzeichnet, daß der Rundfunkemfpänger (10) sowohl mit dem ersten Verkehrs­funk-Decoder (22) als auch mit dem zweiten Verkehrsfunk-De­coder (28) gemeinsam ausgerüstet ist, und daß wahlweise entweder die vom ersten Verkehrsfunk-Decoder (22) freigegebenen Informationen oder die vom zweiten Verkehrsfunk-Deco­der (28) übertragenen Informationen, die mittels eines Sprachsynthesizers (32) umwandelbar sind, mittels eines Wahlschalters (26) an den Verstärker (36) des Rundfunk­empfängers (10) durchschaltbar sind.1.Radio receiver with an NF amplifier and at least one traffic radio decoder for received traffic information, in particular car radio either with a first traffic radio decoder for processing switching signals of a known driver information and warning system or with a second traffic radio decoder for processing digital information, which Mark traffic information (RDS traffic radio decoder; RDS = Radio Data System), the signals or information being obtained by demodulating an auxiliary carrier, characterized in that the radio receiver (10) with both the first traffic radio decoder (22) and is equipped with the second traffic radio decoder (28) together, and that either either the information released by the first traffic radio decoder (22) or the information transmitted by the second traffic radio decoder (28), which can be converted by means of a speech synthesizer (32), to the amplifier (36) of the radio receiver (10) by means of a selector switch (26) ) can be switched through. 2. Rundfunkempfänger nach Anspruch 1, dadurch ge­kennzeichnet, daß dem zweiten Verkehrsfunk-Decoder (28) ein Sprachsynthesizer (32) nachgeschaltet ist, dessen Ausgang mittels des Wahlschalters (26) an den Verstärker (36) schaltbar ist.2. Radio receiver according to claim 1, characterized in that the second traffic radio decoder (28) is followed by a speech synthesizer (32), the output of which can be switched to the amplifier (36) by means of the selector switch (26). 3. Rundfunkempfänger nach Anspruch 1 oder 2, da­durch gekennzeichnet, daß der Wahlschalter automatisch den Ausgang desjenigen Verkehrsfunk-Decoders an den Ver­stärker durchschaltet, der einen Verkehrshinweis empfängt.3. Radio receiver according to claim 1 or 2, characterized in that the selector switch automatically switches through the output of the traffic radio decoder to the amplifier which receives traffic information. 4. Rundfunkempfänger nach einem der vorhergehen­den Ansprüche 1 - 3, dadurch gekennzeichnet, daß bei gleichzeitigem Empfang eines Verkehrshinweises sowohl durch den ersten Verkehrsfunk-Decoder (22) als auch durch den zweiten Verkehrsfunk-Decoder (28) der erste Verkehrsfunk-Decoder (22) vorrangig an den Verstärker (36) angeschaltet ist.4. Radio receiver according to one of the preceding claims 1-3, characterized in that with simultaneous reception of a traffic notice both by the first traffic radio decoder (22) and by the second traffic radio decoder (28) the first traffic radio decoder (22) is primarily connected to the amplifier (36). 5. Rundfunkempfänger nach Anspruch 4, dadurch ge­kennzeichnet, daß der vom zweiten Verkehrsfunk-Decoder (28) empfangene Verkehrshinweis in einen Speicher (30) gespeichert wird, und daß der Speicher (30) nach dem Ende der Wiedergabe des Verkehrshinweises durch den ersten Verkehrsfunk-Decoder (22) über den Sprachsynthe­sizer (32) an den Verstärker (36) zur Wiedergabe des Verkehrshinweises geschaltet wird.5. Radio receiver according to claim 4, characterized in that the traffic information received from the second traffic radio decoder (28) is stored in a memory (30), and that the memory (30) after the end of the reproduction of the traffic information by the first traffic information Decoder (22) via the speech synthesizer (32) to the amplifier (36) for playing the traffic information is switched. 6. Rundfunkempfänger nach einem der vorhergehen­den Ansprüche 1 - 5, dadurch gekennzeichnet, daß die vom zweiten Verkehrsfunk-Decoder (28) empfangene Infor­mationen im Speicher (30) speicherbar sind, und daß der Speicher (30) über den Sprachsynthesizer (32) zur Wiedergabe der Informationen an den Verstärker (36) an­schaltbar ist.6. Radio receiver according to one of the preceding claims 1-5, characterized in that the information received from the second traffic radio decoder (28) can be stored in the memory (30), and that the memory (30) via the speech synthesizer (32) for playback the information can be connected to the amplifier (36).
EP88102231A 1987-03-23 1988-02-16 Radio receiver with two traffic radio decoders Expired - Lifetime EP0283708B1 (en)

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AT88102231T ATE93640T1 (en) 1987-03-23 1988-02-16 BROADCASTER RECEIVER WITH TWO TRAFFIC DECODERS.

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DE19873709523 DE3709523A1 (en) 1987-03-23 1987-03-23 BROADCAST RECEIVER WITH AT LEAST ONE TRAFFIC RADIO DECODER
DE3709523 1987-03-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725501A1 (en) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Means for audible presentation of digitally coded traffic information using a speech synthesizer
EP0725502A2 (en) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Method for decoding and displaying received digitally coded traffic broadcast information
EP0725500A2 (en) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Means for managing digitally coded traffic messages in broadcast receivers
EP0725504A2 (en) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Radio data system receiver with a means for displaying digitally coded traffic information
EP0725504A3 (en) * 1995-02-03 1996-08-14 Robert Bosch Gmbh Radio data system receiver with a means for displaying digitally coded traffic information
EP0725500A3 (en) * 1995-02-03 1996-08-14 Robert Bosch Gmbh Means for managing digitally coded traffic messages in broadcast receivers
EP0725502A3 (en) * 1995-02-03 1997-01-15 Bosch Gmbh Robert Method for decoding and displaying received digitally coded traffic broadcast information
EP0865175A3 (en) * 1997-01-24 2000-05-10 Kabushiki Kaisha Kenwood Radio receiver capable of receiving signals from a plurality of transmission systems such as Digital Audio Broadcast (DAB) and Radio Data System (RDS)
EP0865175A2 (en) * 1997-01-24 1998-09-16 Kabushiki Kaisha Kenwood Radio receiver capable of receiving signals from a plurality of trnsmission systyms such as Digital Audio Broadcast (DAB) and Radio Data System (RDS)
US8489049B1 (en) 1999-02-04 2013-07-16 Hark C Chan Transmission and receiver system operating on different frequency bands
USRE45362E1 (en) 1999-02-04 2015-02-03 Hark C Chan Transmission and receiver system operating on multiple audio programs
US9026072B1 (en) 1999-02-04 2015-05-05 Hark C Chan Transmission and receiver system operating on different frequency bands
US9608744B1 (en) 1999-02-04 2017-03-28 Hark C Chan Receiver system for audio information
US8670393B2 (en) 2006-04-20 2014-03-11 Qualcomm Incorporated Tagging language for broadcast radio
WO2008157551A2 (en) * 2007-06-18 2008-12-24 Qualcomm Incorporated Device and methods of providing radio data system information alerts
WO2008157551A3 (en) * 2007-06-18 2009-03-26 Qualcomm Inc Device and methods of providing radio data system information alerts
CN101690221B (en) * 2007-06-18 2013-08-07 高通股份有限公司 Device and methods of providing radio data system information alerts
US8638219B2 (en) 2007-06-18 2014-01-28 Qualcomm Incorporated Device and methods of providing radio data system information alerts
US8744337B2 (en) 2007-06-18 2014-06-03 Qualcomm Incorporated Apparatus and methods of enhancing radio programming

Also Published As

Publication number Publication date
DE3883406D1 (en) 1993-09-30
US4862513A (en) 1989-08-29
DE3709523A1 (en) 1988-10-13
EP0283708B1 (en) 1993-08-25
ATE93640T1 (en) 1993-09-15
EP0283708A3 (en) 1989-03-29

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