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EP0844753B1 - Method and means for analysing auxiliary digital information in a broadcast programme - Google Patents

Method and means for analysing auxiliary digital information in a broadcast programme Download PDF

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Publication number
EP0844753B1
EP0844753B1 EP19970116443 EP97116443A EP0844753B1 EP 0844753 B1 EP0844753 B1 EP 0844753B1 EP 19970116443 EP19970116443 EP 19970116443 EP 97116443 A EP97116443 A EP 97116443A EP 0844753 B1 EP0844753 B1 EP 0844753B1
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EP
European Patent Office
Prior art keywords
programme
broadcast radio
microprocessor
display
change
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.)
Expired - Lifetime
Application number
EP19970116443
Other languages
German (de)
French (fr)
Other versions
EP0844753A3 (en
EP0844753A2 (en
Inventor
Detlev Beyer
Helmut Dipl.-Ing. Warnecke
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP0844753A2 publication Critical patent/EP0844753A2/en
Publication of EP0844753A3 publication Critical patent/EP0844753A3/en
Application granted granted Critical
Publication of EP0844753B1 publication Critical patent/EP0844753B1/en
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
    • 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
    • H04H60/37—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 segments of broadcast information, e.g. scenes or extracting programme ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • 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 and a device for evaluating additional digital information of a broadcast program.
  • the radio data system is a data channel with which additional and inaudible digital data is transmitted in parallel to the broadcast program.
  • Broadcast receivers with appropriate RDS decoders record RDS data transmitted in addition to broadcast reception with the same receiver, decrypt RDS data and reproduce it.
  • Over the RDS data channel information such as e.g. Traffic messages, transmitted by code words, with the location of the event and the event itself be transmitted. Instead of traffic reports, other RDS payloads of any kind such as e.g. Event notes are transmitted.
  • the received RDS data include, in addition to the RDS payload, a program identification code PI designating the transmitter of the RDS data, and a program service name PS representing the name of the transmitter of the RDS data.
  • the PI code in each group is transmitted as the first block.
  • RDS also provides further information.
  • the program name (PS code) which can consist of eight alphanumeric characters, is transmitted on the display for output.
  • PS code which can consist of eight alphanumeric characters
  • RT radio text
  • the program-accompanying information eg titles of music pieces.
  • EP-A-0 725 503 discloses a method and apparatus for evaluating RDS data of a broadcast program.
  • the invention is therefore based on the problem to provide a method and an apparatus for performing the method, in which a distraction of the user is avoided.
  • FIGURE shows a flow chart of the method.
  • the user data received by a receiver is decomposed into an audio signal and an RDS signal 1.
  • the RDS signal 1 is transmitted to a radio data detector 2, which converts the RDS signal 1 again into a digital signal 3, which is transferred to a microprocessor 4.
  • a query takes place whether the change lock is active.
  • the interlock is hardwired and not optional switchable and eliminates this query.
  • the query 8 can be implemented by software by appropriate programming of the microprocessor 4 or by external hardware. If the query 8 that the PI code has not changed, so is the display on the display element 5 is maintained by a command 9, ie the previously registered once program name from the PS code of an RDS signal 1 is shown on the display element 5 , If the query 8 shows that the PI code has changed, the corresponding new PS code is displayed on the display element 5 by means of a command 10. In this case, the microprocessor 4 previously checks whether a PS code belonging to the new PI code is stored in a memory element of the radio receiver. If this is the case, the PS code is displayed in the memory element.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Auswertung von digitalen Zusatzinformationen eines Rundfunkprogramms.The invention relates to a method and a device for evaluating additional digital information of a broadcast program.

Es ist seit langem bekannt, bei der Übertragung von Rundfunkprogrammen Zusatzinformationen mitzuübertragen. In der ersten Zeit wurden analoge Signale nach dem ARI-System übertragen, um z.B. Verkehrsinformationen für Autofahrer bereitzustellen. Nach und nach wurde das ARI-System durch das digitale RDS (Radio-Daten-System) verdrängt.It has long been known to transmit additional information in the transmission of radio programs. For the first time, analog signals were transmitted to the ARI system, e.g. To provide traffic information to motorists. Gradually, the ARI system was replaced by the digital RDS (Radio Data System).

Das Radio-Daten-System ist ein Datenkanal, mit dem zusätzlich und unhörbar digitale Daten parallel zum Rundfunkprogramm übertragen werden. Rundfunkempfänger mit geeigneten RDS-Decodem nehmen übermittelte RDS-Daten zusätzlich zum Rundfunkempfang mit demselben Empfangsteil auf, entschlüsseln die RDS-Daten und geben diese wieder. Über den RDS-Datenkanal werden Informationen, wie z.B. Verkehrsmeldungen, mittels Codeworten übertragen, wobei der Ort des Geschehens und das Geschehen selbst übertragen werden. Anstelle von Verkehrsmeldungen können auch andere RDS-Nutzdaten jeglicher Art wie z.B. Veranstaltungshinweise übertragen werden. Die empfangenen RDS-Daten beinhalten neben den RDS-Nutzdaten unter anderem ein Programmidentifizierungscode PI, der den Sender der RDS-Daten bezeichnet, und einen Programmdienstnamen PS, der eine Bezeichnung für den Sender der RDS-Daten darstellt.The radio data system is a data channel with which additional and inaudible digital data is transmitted in parallel to the broadcast program. Broadcast receivers with appropriate RDS decoders record RDS data transmitted in addition to broadcast reception with the same receiver, decrypt RDS data and reproduce it. Over the RDS data channel information such as e.g. Traffic messages, transmitted by code words, with the location of the event and the event itself be transmitted. Instead of traffic reports, other RDS payloads of any kind such as e.g. Event notes are transmitted. The received RDS data include, in addition to the RDS payload, a program identification code PI designating the transmitter of the RDS data, and a program service name PS representing the name of the transmitter of the RDS data.

In dem Fachartikel " Datenübertragung im UKW-Rundfunk; F. Stollenwerk, Elektronik 7 / 31.3.1988 " ist das Funktionsprinzip von RDS beschrieben. Dabei wird auf der Senderseite dem Stereo- Multiplexsignal das RDS-Signal hinzugefügt und anschließend beide Signale frequenzmoduliert. Die RDS-Daten werden in Blöcke unterteilte Gruppen übertragen, wobei jede Gruppe in vier Blöcke unterteilt ist. Die Programmidentifikation (PI-Code) umfaßt z.B. 16 Bit. Diese besteht aus einer Länderkennung (4-Bit), einer Gebietskennung (4-Bit) und der eigentlichen Programmerkennung (8-Bit). Der PI-Code ist nicht zur unmittelbaren Anzeige des empfangenen Programms auf einem Display gedacht, sondern soll vielmehr dem RDS-Empfänger die automatische Abstimmung auf einen anderen Sender derselben Programmkette ermöglichen, sobald die Empfangsqualität des eingestellten Senders sich verschlechtert. Wenn ein anderer Sender mit dem gleichen PI-Code besser empfangen wird, erfolgt ein Frequenzwechsel. Damit die Zeit zum Auffinden einer interaktiven Frequenz nicht zu lange dauert, wird der PI-Code in jeder Gruppe als erster Block übertragen. Neben dem PI-Code stellt RDS noch weitere Informationen zur Verfügung. So wird zur Ausgabe auf dem Display der Programmname (PS-Code) übertragen, der aus acht alphanumerischen Zeichen bestehen kann. Zusätzlich kann neben Verkehrsinformationen auch ein Radiotext (RT) zur programmbegleitenden Information übertragen werden (z.B. Titel von Musikstücken). In entsprechend ausgestatteten RDS-Heimempfängern können 64 alphanumerische Zeichen als Klartext dargestellt werden. Bei Autoempfängern ist dagegen aus Sicherheitsgründen eine Textanzeige nicht erwünscht.In the article " Data transmission in VHF broadcasting; F. Stollenwerk, Electronics 7 / 31.3.1988 describes the operating principle of RDS, which adds the RDS signal to the stereo multiplex signal on the transmitter side and then frequency modulates both signals.The RDS data is transmitted in blocks divided into blocks, each group being divided into four blocks (PI code) comprises eg 16 bits, which consists of a country code (4-bit), an area code (4-bit) and the actual program recognition (8-bit) The PI code is not for immediate display the intended program on a display, but rather the RDS receiver to allow automatic tuning to another station of the same program chain as soon as the reception quality of the tuned station deteriorates. If another station is received better with the same PI code, a frequency change occurs. So that the time to find an interactive frequency does not take too long, the PI code in each group is transmitted as the first block. In addition to the PI code, RDS also provides further information. For example, the program name (PS code), which can consist of eight alphanumeric characters, is transmitted on the display for output. In addition to traffic information, it is also possible to transmit a radio text (RT) to the program-accompanying information (eg titles of music pieces). In appropriately equipped RDS home receivers 64 alphanumeric characters can be displayed as plain text. For car receivers, however, a text ad is not desired for security reasons.

EP-A-0 725 503 offenbart ein verfahren und eine Vorrichtung zur Auswerten von RDS daten eines Rundfunkprogramms. EP-A-0 725 503 discloses a method and apparatus for evaluating RDS data of a broadcast program.

Allerdings verwenden in jüngster Zeit immer mehr Rundfunkstationen den PS-Code für Werbezwecke. Anstatt des eingestellten Programmnamens erscheint somit auf dem Display eine alphanumerische Werbeanzeige. Dieser ständige Wechsel der Anzeige am Display führt zu störenden Beeinflussung des Betrachters, so daß insbesondere Autofahrer vom Verkehrsgeschehen abgelenkt werden.However, recently more and more broadcasting stations use the PS code for advertising purposes. Instead of the programmed program name, an alphanumeric advertisement appears on the display. This constant change of the display on the display leads to disturbing influence on the viewer, so that in particular motorists are distracted from the traffic.

Der Erfindung liegt daher das Problem zugrunde, ein Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, bei dem eine Ablenkung des Benutzers vermieden wird.The invention is therefore based on the problem to provide a method and an apparatus for performing the method, in which a distraction of the user is avoided.

Die Lösung des Problems ergibt sich durch die Merkmale der Patentansprüche 1 und 4. Durch die Zuschaltung der Wechselsperre wird die Anzeige am Anzeigeelement nur geändert, wenn sich auch der Programmidentifizierungscode ändert, so daß störende Werbeinformationen im Programmdienstnamen PS ignoriert werden. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.The solution to the problem results from the features of claims 1 and 4. By the connection of the change lock the display on the display element is changed only if the program identification code changes, so that disturbing advertising information in the program service name PS are ignored. Further advantageous embodiments of the invention will become apparent from the dependent claims.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels näher erläutert: Die einzige Figur zeigt ein Flußdiagramm des Verfahrens.The invention is explained in more detail below with reference to a preferred embodiment: The single FIGURE shows a flow chart of the method.

Die von einem Empfänger empfangenen Nutzdaten werden in ein Audiosignal und in ein RDS-Signal 1 zerlegt. Das RDS-Signal 1 wird an einen Radio-Daten-Detektor 2 übergeben, der das RDS-Signal 1 wieder in ein digitales Signal 3 wandelt, das an einen Mikroprozessor 4 übergeben wird. Am Mikroprozessor 4 findet eine Abfrage statt, ob die Wechselsperre aktiv ist. In einem Beispiel welches keine Ausführungsform der Erfindung ist, ist die Wechselsperre fest verdrahtet und nicht wahlweise zuschaltbar und entfällt diese Abfrage. Ergibt die Abfrage, daß die Wechselsperre von der Eingabeeinheit nicht an den Mikroprozessor 4 übergeben wurde, so wird das Anzeigeelement 5 vom Mikroprozessor 4 gemäß dem Stand der Technik angesteuert, d.h. alle vom Rundfunksender zur Anzeige am Anzeigeelement 5 ausgewähltem Daten 6 werden am Anzeigeelement 5 dargestellt. Ergibt die Abfrage der Wechsel sperre, daß diese durch die Eingabeeinheit aktiviert wurde, so wird das digitale Signal 3 vor einer möglichen Ausgabe auf dem Anzeigeelement 5 zunächst einer weiteren Auswertung unterzogen. Mittels eines Steuerbefehls 7 findet eine Abfrage 8 statt, ob sich der PI-Code im Vergleich zum letzten digitalen Signal 3 geändert hat (Pi (n-1) = Pi (n) ?). Da der PI-Code immer als erster Block einer jeden Gruppe übertragen wird, kann diese Abfrage bei jedem neuen RDS-Signal 1 erfolgen. Die Abfrage 8 kann softwaremäßig durch entsprechende Programmierung des Mikroprozessors 4 oder durch eine externe Hardware realisiert werden. Ergibt die Abfrage 8, daß sich der PI-Code nicht geändert hat, so wird durch einen Befehl 9 die Anzeige am Anzeigeelement 5 aufrechterhalten, d. h. der zuvor einmal registrierte Programmname aus dem PS-Code eines RDS-Signals 1 ist auf dem Anzeigeelement 5 dargestellt. Ergibt die Abfrage 8, daß sich der PI-Code geändert hat, so wird auf dem Anzeigeelement 5 der entsprechende neue PS-Code mittels eines Befehls 10 dargestellt. Dabei überprüft der Mikroprozessor 4 zuvor, ob ein zum neuen PI-Code zugehöriger PS-Code in einem Speicherelement des Rundfunkempfängers abgelegt ist. Ist dies der Fall, so wird der PS-Code im Speicherelement zur Anzeige gebracht. Dadurch wird vermieden, daß eine zufällig übertragene Werbeinformation beim Wechsel des PI-Codes als neuer Programmname zur Anzeige gebracht wird und dort solange stehen bleibt, bis eine erneute Änderung des PI-Codes auftritt. Ist die Wechselsperre aktiv, so findet die zuvor beschriebene Prozedur vorzugsweise für alle eingespeicherten bzw. während des Betriebszustandes neu eingespeicherten Programme Anwendung, unabhängig davon ob diese mit oder ohne Wechselsperre abgespeichert wurden.The user data received by a receiver is decomposed into an audio signal and an RDS signal 1. The RDS signal 1 is transmitted to a radio data detector 2, which converts the RDS signal 1 again into a digital signal 3, which is transferred to a microprocessor 4. At the microprocessor 4, a query takes place whether the change lock is active. In an example which is not an embodiment of the invention, the interlock is hardwired and not optional switchable and eliminates this query. If the query that the change lock was not transferred from the input unit to the microprocessor 4, the display element 5 is controlled by the microprocessor 4 according to the prior art, ie all selected by the broadcaster to display the display element 5 data 6 are displayed on the display element 5 , If the interrogation of the change interlock that this was activated by the input unit, the digital signal 3 is first subjected to a further evaluation before a possible output on the display element 5. By means of a control command 7, a query 8 takes place as to whether the PI code has changed compared to the last digital signal 3 (Pi (n-1) = Pi ( n )?). Since the PI code is always transmitted as the first block of each group, this polling can be done every new RDS signal 1. The query 8 can be implemented by software by appropriate programming of the microprocessor 4 or by external hardware. If the query 8 that the PI code has not changed, so is the display on the display element 5 is maintained by a command 9, ie the previously registered once program name from the PS code of an RDS signal 1 is shown on the display element 5 , If the query 8 shows that the PI code has changed, the corresponding new PS code is displayed on the display element 5 by means of a command 10. In this case, the microprocessor 4 previously checks whether a PS code belonging to the new PI code is stored in a memory element of the radio receiver. If this is the case, the PS code is displayed in the memory element. This avoids that a randomly transmitted advertising information is displayed when changing the PI code as a new program name and remains there until a new change of the PI code occurs. If the change lock is active, the procedure described above is preferably used for all programs stored or newly stored during the operating state, regardless of whether these were stored with or without change lock.

Claims (4)

  1. Method for evaluating digital supplementary information from a broadcast radio programme, particularly RDS data,
    characterized in that
    optionally a lock is engaged, so that a change in the programme service name PS is adopted for display only in the event of a change in the programme identification code PI.
  2. Method according to Claim 1, characterized in that the lock is active for all pre-programmed broadcast radio programmes and broadcast radio programmes that are programmed during the lock.
  3. Method according to Claim 1 or 2, characterized in that in the event of a change in the programme identification code PI, the programme service name PS is adopted from the RDS signal (1) for display only if there is no corresponding programme service name PS for the new programme identification code PI stored in the broadcast radio receiver that is otherwise adopted for display.
  4. Apparatus for evaluating digital supplementary information from a broadcast radio programme, comprising a broadcast radio receiver, a microprocessor connected to the broadcast radio receiver, a display element which can be actuated by the microprocessor, a memory element with a two-way connection to the microprocessor and an input unit which actuates the microprocessor,
    characterized in that
    the microprocessor (4) has an associated lock which can be optionally engaged, so that a change in the programme service name PS can be displayed on the display element (5) only in the event of a change in the programme identification code PI.
EP19970116443 1996-11-22 1997-09-22 Method and means for analysing auxiliary digital information in a broadcast programme Expired - Lifetime EP0844753B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19648377 1996-11-22
DE19648377 1996-11-22

Publications (3)

Publication Number Publication Date
EP0844753A2 EP0844753A2 (en) 1998-05-27
EP0844753A3 EP0844753A3 (en) 2004-01-14
EP0844753B1 true EP0844753B1 (en) 2013-04-24

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EP19970116443 Expired - Lifetime EP0844753B1 (en) 1996-11-22 1997-09-22 Method and means for analysing auxiliary digital information in a broadcast programme

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813678A1 (en) * 1998-03-27 1999-10-07 Becker Gmbh RDS receiver and method for operating one

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2536879B2 (en) * 1987-08-12 1996-09-25 パイオニア株式会社 Radio data receiver
EP0495136A3 (en) * 1991-01-15 1993-03-17 Pioneer Electronic Corporation Method of transmitting data in rds broadcasting
DE19503540A1 (en) * 1995-02-03 1996-09-05 Bosch Gmbh Robert Process for receiving and outputting a radio program with added digital information and radio receivers

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Publication number Publication date
EP0844753A3 (en) 2004-01-14
EP0844753A2 (en) 1998-05-27

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