EP0558918A2 - RDS broadcast receiver with a device for adapting the volume in EON receiving mode - Google Patents

RDS broadcast receiver with a device for adapting the volume in EON receiving mode Download PDF

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Publication number
EP0558918A2
EP0558918A2 EP93101260A EP93101260A EP0558918A2 EP 0558918 A2 EP0558918 A2 EP 0558918A2 EP 93101260 A EP93101260 A EP 93101260A EP 93101260 A EP93101260 A EP 93101260A EP 0558918 A2 EP0558918 A2 EP 0558918A2
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European Patent Office
Prior art keywords
volume
microprocessor
program
traffic
eon
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EP93101260A
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German (de)
French (fr)
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EP0558918B1 (en
EP0558918A3 (en
Inventor
Heinrich Grundig Emv Max Grundig Fischelmayer
Dieter Dipl.-Ing. Grundig Emv Max Grundig Nohse
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Grundig AG
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Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]

Definitions

  • the invention relates to an RDS radio receiver, in particular to an RDS car radio according to the preamble of claim 1, which is set up to switch automatically in the EON reception mode from any radio program to a traffic announcement in another program.
  • DE-C2-35 19 253 describes a radio receiver with a program identification part which, within a program, reproduces specially marked program parts, for example traffic reports, weather reports, etc., with a minimum volume which in all cases is equal to or greater than the volume set for the current radio program is.
  • the receiver always remains tuned to the same reception frequency since there is no change to another radio program.
  • EP-A2-0 106 408 A circuit arrangement with similar features is known from EP-A2-0 106 408, which is designed so that when a control signal occurs within a radio transmission, the volume is only raised if it was previously below a predefinable value.
  • This circuit arrangement is also intended to reproduce specially marked program parts at a minimum volume during an ongoing radio transmission in order to make them clear to the listener. It does not pursue the goal of adjusting the volume when changing programs.
  • GB-A-2 215 927 discloses an RDS receiver with pushbuttons for calling up different programs, in which, assigned to the PI codes of the individual programs, different setting parameters for influencing acoustic reproduction (for example setting volume, sound, etc.) ) can be saved.
  • the publication gives no indication of how the volume can be adjusted between an automatic program change in EON mode Continuously received program and the briefly displayed traffic information from another program that is not assigned to a program key, is to be carried out automatically without additional setting elements.
  • the radio receiver shown in FIG. 1 is composed in a manner known per se from the synthesizer tuner 1, the IF amplifier 2, the demodulator 3, the stereo decoder 4 for decoding the stereo multiplex signal and the stereo power amplifier 5.
  • the demodulated IF signal is fed from the output of the demodulator 3 to the RDS demodulator 6, which supplies the digital RDS data to the microprocessor 10 for further decoding and evaluation.
  • This forms the central control unit for all manual and automatic operating sequences and also delivers, among other things, the tuning signal for the synthesizer tuner 1.
  • the microprocessor 10 receives its operating commands from the operating part 9, which for simplification only shows the two volume keys 9a, 9b.
  • the microprocessor 10 Due to the manual command via the volume keys 9a, 9b, the microprocessor 10 generates control signals for the electronic actuators 7, 8, which dampen the two LF signals at the input of the stereo amplifier 5 according to their control. Irrespective of the control commands of the volume buttons 9a, 9b, the damping of the actuators 7, 8 can also be changed by temporarily stored control data from the microprocessor 10 or the control commands of the volume buttons 9a, 9b in the microprocessor 10 can be converted so that an increase or decrease Damping of the actuators 7, 8 results.
  • the radio receiver receives the information about the reception frequencies relevant for the traffic program with the aid of the RDS signals broadcast parallel to the radio program currently being received.
  • further control processes e.g. Sound and volume changes in the NF channel can be linked.
  • Fig. 2 shows an example of the control sequence for adjusting the volume when changing automatically to a traffic program in the EON reception mode.
  • step S1 the microprocessor 10 first checks in step S1 whether there is EON reception operation and waits in step S2 for a TA identifier to appear. As long as both conditions are not met, the program returns to the starting point. If a TA signal is detected in step S2, the microprocessor 10 supplies a tuning signal relevant to a current traffic announcement to the tuner 1 in step S 3 and determines the instantaneous damping value in step S4 A1 of the electronic actuators 7, 8, which was valid for the radio program previously received. Assuming that this is a first-time change to a traffic program, program steps S5 and S6 have no meaning, since no difference value ⁇ A has yet been stored for the volume setting.
  • step S7 is activated. It is different with the repeated switch to a traffic program.
  • the volume is corrected by the difference value ⁇ A in step S6.
  • the value ⁇ A can be both positive and negative.
  • the signs introduced in S6 and S13 in the flow diagram of FIG. 2 are only intended to indicate that a volume change made in step S6 is reversed again in step S14.
  • step S7 it is first checked again whether the TA identifier still exists. If so, it is determined in step S8 whether one of the control elements 9a, 9b has been actuated to change the volume for the first time after changing to the traffic program. As soon as this is the case, via step S9 in step S10 the point in time from which the operating elements 9a, 9b are no longer activated is set by setting a time counter to zero and starting it. The program runs in a loop to record the passage of time the program steps S11 and S12 until the expiry time t 1 is reached. If one of the volume controls 9a, 9b is temporarily operated again in the meantime, the time counting is interrupted and the program returns to step S10.
  • the newly set damping value A2 of the actuators 7, 8 is detected after the time t 1 in program step S15 and checked in step S16 whether the absolute value resulting as the difference between the damping values A1 and A2 is within predefinable limits. If this is the case, the difference value ⁇ A is stored in step S 17 and is available for subsequent volume corrections in step S6 or S14. Otherwise, the program returns directly to step S7. Even if no difference value ⁇ A is stored in step S17, the actuation of the volume controls 9a, 9b affects the current volume, since the actuation of the actuators 7, 8 runs parallel to the information processing in the program described.
  • step S7 the microprocessor 10 supplies a tuning signal in step S13, which tunes the tuner 1 to the radio program originally received, and in step S14 the actuators 7, 8 are attenuated by the difference ⁇ A corrected in the opposite direction to the volume adjustment in step S6.
  • the volume is adjusted automatically, but with each change to a traffic program there is again the possibility to adjust the difference ⁇ A to the wishes of the device user or the program conditions.
  • a change in the basic volume by operating the control elements 9a, 9b while the current program is being received and after a difference value ⁇ A has already been stored within the time period of a respective traffic announcement has no influence on the automatic volume compensation when changing the program.
  • the same problem of the different volume levels also arises with the transmitter-controlled switchover of a radio receiver to the playback of a traffic announcement while playing a sound carrier recording (e.g. compact cassette or compact disc).
  • the level differences depend on both program-related and signal source-related factors.
  • analogy to the control sequence described above the volume can also be adjusted for this operating case.
  • the difference values ⁇ A for correcting the damping of the actuators 7, 8 are stored in addition to the values obtained in the EON reception mode and are called up according to the operating case.

Abstract

Using the radio data system (RDS), it is possible in EON receiving mode to switch a broadcast receiver automatically to the traffic announcement on another station during the reception of any FM sound radio station. During this switch, however, strong jumps in volume can occur in the audio reproduction since the transmitters of different station chains are operated with different modulation percentages determined by their station. Using the broadcast receiver according to the invention, the volume can be adapted when changing to a traffic radio programme and this is repeated automatically with each subsequent station change. <IMAGE>

Description

Die Erfindung bezieht sich auf einen RDS-Rundfunkempfänger, insbesondere auf ein RDS-Autoradio gemäß dem Oberbegriff des Anspruchs 1, das dazu eingerichtet ist, im EON-Empfangsbetrieb von einem beliebigen Hörfunkprogramm auf eine Verkehrsdurchsage in einem anderen Programm automatisch umzuschalten.The invention relates to an RDS radio receiver, in particular to an RDS car radio according to the preamble of claim 1, which is set up to switch automatically in the EON reception mode from any radio program to a traffic announcement in another program.

Gemäß European Standard EN 50 067: 1990, Seite 48, liefert die EON-Kennung (EON = Enhanced Other Networks) dem Empfangsgerät Informationen, die den Empfänger parallel zum aktuell empfangenen Programm über das Programm anderer Programmketten informiert. Auf diese Weise ist es möglich, im UKW-Band Programme zu empfangen, die keine Verkehrsnachrichten verbreiten, ohne die Verkehrsdurchsage in einem anderen Programm zu versäumen, da das Empfangsgerät für die Dauer der Verkehrsdurchsage automatisch auf die Empfangsfrequenz des Verkehrsfunkprogramms abgestimmt werden kann. Während die Sendestationen innerhalb einer Programmkette mit dem gleichen Modulationshub arbeiten, muß jedoch zwischen verschiedenen Programmketten mit sehr unterschiedlichen Aussteuerungen gerechnet werden. So ist z.B. zwischen dem Klassikprogramm der Programmkette "Bayern 4" und dem Verkehrsfunkprogramm der Programmkette "Bayern 3" ein deutlicher Lautstärkesprung bei der Wiedergabe feststellbar. Dieser Lautstärkesprung beansprucht fortlaufend die Aufmerksamkeit des Gerätebenutzers, da er bei jedem automatischen Programmwechsel die Lautstärke von Hand nachstellen muß.According to European Standard EN 50 067: 1990, page 48, the EON identifier (EON = Enhanced Other Networks) provides the receiving device with information that informs the receiver about the program of other program chains in parallel to the currently received program. In this way, it is possible to receive programs in the VHF band that do not broadcast traffic news without missing the traffic announcement in another program, since the receiver automatically tunes to the reception frequency of the traffic announcement for the duration of the traffic announcement Traffic program can be tuned. While the transmitter stations work within the same program chain with the same modulation stroke, very different modulations must be expected between different program chains. For example, between the classic program of the "Bayern 4" program chain and the traffic program of the "Bayern 3" program chain, there is a clear volume jump during playback. This volume jump continuously demands the attention of the device user, since he has to readjust the volume by hand with every automatic program change.

Es sind zwar verschiedene Lösungen bekannt, die Wiedergabelautstärke programmgebunden zu beeinflussen, doch offenbart keines dieser Verfahren eine Anpassung der Lautstärke bei einer automatischen Programmumschaltung.Although various solutions are known for influencing the playback volume in a program-related manner, none of these methods discloses an adjustment of the volume in the case of an automatic program switchover.

So beschreibt die DE-C2-35 19 253 einen Rundfunkempfänger mit einem Programmidentifikationsteil, der innerhalb einer Programmdarbietung besonders gekennzeichnete Programmteile, z.B. Verkehrsmeldungen, Wetterberichte etc. mit einer Mindestlautstärke wiedergibt, die in allen Fällen gleich oder größer als die für das laufende Rundfunkprogramm eingestellte Lautstärke ist. Der Empfänger bleibt dabei immer auf dieselbe Empfangsfrequenz abgestimmt, da kein Wechsel auf ein anderes Rundfunkprogramm stattfindet.For example, DE-C2-35 19 253 describes a radio receiver with a program identification part which, within a program, reproduces specially marked program parts, for example traffic reports, weather reports, etc., with a minimum volume which in all cases is equal to or greater than the volume set for the current radio program is. The receiver always remains tuned to the same reception frequency since there is no change to another radio program.

Eine Schaltungsanordnung mit ähnlichen Merkmalen ist aus der EP-A2-0 106 408 bekannt, die so ausgebildet ist, daß beim Auftreten eines Steuersignals innerhalb einer Rundfunkübertragung die Lautstärke nur dann angehoben wird, wenn sie vorher unterhalb eines vorgebbaren Wertes lag. Auch diese Schaltungsanordnung soll besonders gekennzeichnete Programmteile während einer laufenden Rundfunkübertragung mit einer Mindestlautstärke wiedergeben, um sie dem Hörer deutlich zu machen. Sie verfolgt nicht das Ziel, bei einem Programmwechsel eine Anpassung der Lautstärken vorzunehmen.A circuit arrangement with similar features is known from EP-A2-0 106 408, which is designed so that when a control signal occurs within a radio transmission, the volume is only raised if it was previously below a predefinable value. This circuit arrangement is also intended to reproduce specially marked program parts at a minimum volume during an ongoing radio transmission in order to make them clear to the listener. It does not pursue the goal of adjusting the volume when changing programs.

Fernseh- und Tonrundfunkgeräte moderner Bauart bieten die Möglichkeit, zugeordnet zu einzelnen Programmtasten individuell gewählte Lautstärke- und Klangeinstellungen über Tastenbefehl abzuspeichern. Eine automatische Lautstärkeanpassung bei sendergesteuerten Programmwechseln ist aber auch mit diesen Geräten nicht möglich.Television and audio broadcasting devices of modern design offer the possibility of storing individually selected volume and sound settings assigned to individual program buttons using a key command. However, automatic volume adjustment when changing channels is not possible with these devices either.

Schließlich offenbart die GB-A-2 215 927 einen RDS-Empfänger mit Drucktasten zum Aufrufen verschiedener Programme, bei dem, zugeordnet zu den PI-Codes der einzelnen Programme, unterschiedliche Einstellparameter zur Beeinflussung der akustischen Wiedergabe (z.B. Einstellung von Lautstärke, Klang etc.) abgespeichert werden. Die Druckschrift gibt jedoch keinen Hinweis darauf, wie bei einem automatischen Programmwechsel im EON-Betrieb die Angleichung der Lautstärke zwischen dem fortlaufend empfangenen Programm und der kurzzeitig eingeblendeten Verkehrsmeldung aus einem anderen Programm, das keiner Programmtaste zugeordnet ist, ohne zusätzliche Einstellorgane selbsttätig erfolgen soll.Finally, GB-A-2 215 927 discloses an RDS receiver with pushbuttons for calling up different programs, in which, assigned to the PI codes of the individual programs, different setting parameters for influencing acoustic reproduction (for example setting volume, sound, etc.) ) can be saved. The publication, however, gives no indication of how the volume can be adjusted between an automatic program change in EON mode Continuously received program and the briefly displayed traffic information from another program that is not assigned to a program key, is to be carried out automatically without additional setting elements.

Es war deshalb Aufgabe der Erfindung, einen Rundfunkempfänger, insbesondere ein Autoradio, zu schaffen, das eine Anpassung der Lautstärke beim automatischen Programmwechsel im EON-Betrieb selbsttätig vornimmt, ohne zusätzliche Einstellorgane zu erfordern, und das es dem Gerätebenutzer überläßt, mit welcher Lautstärke er eine Verkehrsdurchsage vergleichsweise zum laufenden Programm empfangen möchte.It was therefore an object of the invention to provide a radio receiver, in particular a car radio, which automatically adjusts the volume during the automatic program change in the EON mode, without requiring additional setting elements, and which leaves the device user at what volume he is at Wants to receive traffic announcement compared to the current program.

Diese Aufgabe ist durch einen Rundfunkempfänger mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen 2 und 3 offenbart.This object is achieved by a radio receiver with the features of patent claim 1. Advantageous embodiments of the invention are disclosed in subclaims 2 and 3.

Anhand der Zeichnung wird die Erfindung nachstehend näher erläutert.The invention is explained in more detail below with the aid of the drawing.

Es zeigen:

Fig. 1
das Blockschaltbild für ein Ausführungsbeispiel des erfindungsgemäßen Rundfunkempfängers
Fig. 2
ein Flußdiagramm für den Steuerungsablauf zur automatischen Lautstärkeanpassung
Show it:
Fig. 1
the block diagram for an embodiment of the radio receiver according to the invention
Fig. 2
a flowchart for the control sequence for automatic volume adjustment

Der in Fig. 1 dargestellte Rundfunkempfänger setzt sich in an sich bekannter Weise aus dem Synthesizer-Tuner 1, dem ZF-Verstärker 2, dem Demodulator 3, dem Stereo-Decoder 4 zum Dekodieren des Stereo-Multiplexsignals und dem Stereo-Endverstärker 5 zusammen. Vom Ausgang des Demodulators 3 wird das demodulierte ZF-Signal dem RDS-Demodulator 6 zugeführt, der die digitalen RDS-Daten zur weiteren Decodierung und Auswertung an den Mikroprozessor 10 liefert. Dieser bildet die zentrale Steuereinheit für alle manuellen und automatischen Bedienabläufe und liefert u.a. auch das Abstimmsignal für den Synthesizer-Tuner 1. Seine Bedienbefehle erhält der Mikroprozessor 10 vom Bedienteil 9, das zur Vereinfachung nur die beiden Lautstärketasten 9a, 9b zeigt. Aufgrund der manuellen Befehlsgabe über die Lautstärketasten 9a, 9b erzeugt der Mikroprozessor 10 Steuersignale für die elektronischen Stellglieder 7, 8, die entsprechend ihrer Ansteuerung die beiden NF-Signale am Eingang des Stereoverstärkers 5 bedämpfen. Unabhängig von den Steuerbefehlen der Lautstärketasten 9a, 9b kann die Dämpfung der Stellglieder 7, 8 aber auch durch zwischengespeicherte Stelldaten vom Mikroprozessor 10 verändert werden bzw. können die Steuerbefehle der Lautstärketasten 9a, 9b im Mikroprozessor 10 so umgerechnet werden, daß sich eine erhöhte oder erniedrigte Dämpfung der Stellglieder 7, 8 ergibt.The radio receiver shown in FIG. 1 is composed in a manner known per se from the synthesizer tuner 1, the IF amplifier 2, the demodulator 3, the stereo decoder 4 for decoding the stereo multiplex signal and the stereo power amplifier 5. The demodulated IF signal is fed from the output of the demodulator 3 to the RDS demodulator 6, which supplies the digital RDS data to the microprocessor 10 for further decoding and evaluation. This forms the central control unit for all manual and automatic operating sequences and also delivers, among other things, the tuning signal for the synthesizer tuner 1. The microprocessor 10 receives its operating commands from the operating part 9, which for simplification only shows the two volume keys 9a, 9b. Due to the manual command via the volume keys 9a, 9b, the microprocessor 10 generates control signals for the electronic actuators 7, 8, which dampen the two LF signals at the input of the stereo amplifier 5 according to their control. Irrespective of the control commands of the volume buttons 9a, 9b, the damping of the actuators 7, 8 can also be changed by temporarily stored control data from the microprocessor 10 or the control commands of the volume buttons 9a, 9b in the microprocessor 10 can be converted so that an increase or decrease Damping of the actuators 7, 8 results.

Mit Hilfe der aus dem RDS-Demodulator 6 gewonnenen und im Mikroprozessor 10 ausgewerteten digitalen RDS-Daten ist es möglich, den Tuner 1, der zunächst auf eine beliebige UKW-Hörfunkfrequenz abgeglichen ist, während einer Verkehrsdurchsage in einem anderen Programm auf die zugehörige Empfangsfrequenz umzustimmen, solange die TA-Kennung (TA = Traffic Announcement) vom jeweiligen Verkehrsfunksender ausgestrahlt wird. Die Information über die für das Verkehrsfunkprogramm relevanten Empfangsfrequenzen erhält der Rundfunkempfänger mit Hilfe der parallel zum laufend empfangenen Hörfunkprogramm ausgestrahlten RDS-Signale. Mit der Frequenzumsteuerung im Tuner 1 durch den Mikroprozessor 10 können auch weitere Steuervorgänge, z.B. Klang- und Lautstärkeveränderungen im NF-Kanal verknüpft werden.With the help of the digital RDS data obtained from the RDS demodulator 6 and evaluated in the microprocessor 10, it is possible to change the tuner 1, which is initially tuned to any VHF radio frequency, to the associated reception frequency during a traffic announcement in another program as long as the TA identifier (TA = Traffic Announcement) is broadcast by the respective traffic radio station. The radio receiver receives the information about the reception frequencies relevant for the traffic program with the aid of the RDS signals broadcast parallel to the radio program currently being received. With the frequency changeover in the tuner 1 by the microprocessor 10, further control processes, e.g. Sound and volume changes in the NF channel can be linked.

Fig. 2 zeigt beispielhaft den Steuerungsablauf zur Anpassung der Lautstärke beim automatischen Wechsel auf ein Verkehrsfunkprogramm im EON-Empfangsbetrieb.Fig. 2 shows an example of the control sequence for adjusting the volume when changing automatically to a traffic program in the EON reception mode.

Der Mikroprozessor 10 prüft nach Programmstart zunächst im Schritt S1, ob EON-Empfangsbetrieb vorliegt und wartet im Schritt S2 auf das Erscheinen einer TA-Kennung. Solange beide Bedingungen nicht erfüllt sind, kehrt das Programm jeweils wieder zum Ausgangspunkt zurück. Wird im Schritt S2 ein TA-Signal erkannt, so liefert der Mikroprozessor 10 im Schritt S 3 ein für eine aktuelle Verkehrsdurchsage relevantes Abstimmsignal an den Tuner 1 und ermittelt im Schritt S4 den momentanen Dämpfungswert A1 der elektronischen Stellglieder 7, 8, der für das bisher empfangene Hörfunkprogramm Gültigkeit hatte. Setzt man voraus, daß es sich um einen erstmaligen Wechsel auf ein Verkehrsfunkprogramm handelt, so haben die Programmschritte S5 und S6 noch keine Bedeutung, da noch kein Differenzwert ΔA für die Lautstärkeeinstellung abgespeichert ist. Die Frage nach einem von Null verschiedenen Differenzwert ΔA wird deshalb mit NEIN beantwortet und der Programmschritt S7 angesteuert. Anders beim wiederholten Wechsel auf ein Verkehrsfunkprogramm. Ausgehend vom aktuell ermittelten Dämpfungswert A1 im Schritt S4 wird im Schritt S6 die Lautstärke um den Differenzwert ΔA korrigiert. Der Wert ΔA kann dabei sowohl positiv als auch negativ sein. Die im Flußdiagramm der Fig. 2 in S6 und S13 eingebrachten Vorzeichen sollen nur andeuten, daß eine im Schritt S6 vollzogene Lautstärkeveränderung im Schritt S14 wieder rückgängig gemacht wird.After the program has started, the microprocessor 10 first checks in step S1 whether there is EON reception operation and waits in step S2 for a TA identifier to appear. As long as both conditions are not met, the program returns to the starting point. If a TA signal is detected in step S2, the microprocessor 10 supplies a tuning signal relevant to a current traffic announcement to the tuner 1 in step S 3 and determines the instantaneous damping value in step S4 A1 of the electronic actuators 7, 8, which was valid for the radio program previously received. Assuming that this is a first-time change to a traffic program, program steps S5 and S6 have no meaning, since no difference value ΔA has yet been stored for the volume setting. The question of a difference value ΔA other than zero is therefore answered with NO and program step S7 is activated. It is different with the repeated switch to a traffic program. Starting from the currently determined damping value A1 in step S4, the volume is corrected by the difference value ΔA in step S6. The value ΔA can be both positive and negative. The signs introduced in S6 and S13 in the flow diagram of FIG. 2 are only intended to indicate that a volume change made in step S6 is reversed again in step S14.

Im Programmschritt S7 wird zunächst wieder geprüft, ob die TA-Kennung noch vorhanden ist. Wenn ja, wird im Schritt S8 ermittelt, ob erstmalig nach dem Wechsel auf das Verkehrsfunkprogramm eines der Bedienelemente 9a, 9b zur Veränderung der Lautstärke betätigt wurde. Sobald dies der Fall ist, wird über den Schritt S9 im Schritt S10 der Zeitpunkt festgehalten, ab dem die Bedienelemente 9a, 9b nicht mehr aktiviert werden, indem ein Zeitzähler auf Null gesetzt und gestartet wird. Zur Erfassung des Zeitablaufes läuft das Programm in einer Schleife über die Programmschritte S11 und S12, bis die Ablaufzeit t₁ erreicht ist. Wird zwischenzeitlich einer der Lautstärkesteller 9a, 9b erneut vorübergehend betätigt, so wird die Zeitzählung unterbrochen, und das Programm kehrt zum Schritt S10 zurück. Andernfalls wird nach dem Zeitablauf t₁ im Programmschritt S15 der neu eingestellte Dämpfungswert A2 der Stellglieder 7, 8 erfaßt und im Schritt S16 überprüft, ob der sich als Differenz zwischen den Dämpfungswerten A1 und A2 ergebende Absolutwert innerhalb vorgebbarer Grenzen bewegt. Trifft dies zu, so wird im Schritt S 17 der Differenzwert ΔA abgespeichert und steht für nachfolgende Lautstärkekorrekturen im Schritt S6 bzw. S14 zur Verfügung. Andernfalls kehrt das Programm direkt zum Schritt S7 zurück. Auch wenn kein Differenzwerth ΔA im Schritt S17 abgespeichert wird, wirkt die Betätigung der Lautstärkesteller 9a, 9b auf die aktuelle Lautstärke, da die Ansteuerung der Stellglieder 7, 8 parallel zur Informationsverarbeitung im beschriebenen Programm verläuft.In program step S7 it is first checked again whether the TA identifier still exists. If so, it is determined in step S8 whether one of the control elements 9a, 9b has been actuated to change the volume for the first time after changing to the traffic program. As soon as this is the case, via step S9 in step S10 the point in time from which the operating elements 9a, 9b are no longer activated is set by setting a time counter to zero and starting it. The program runs in a loop to record the passage of time the program steps S11 and S12 until the expiry time t 1 is reached. If one of the volume controls 9a, 9b is temporarily operated again in the meantime, the time counting is interrupted and the program returns to step S10. Otherwise, the newly set damping value A2 of the actuators 7, 8 is detected after the time t 1 in program step S15 and checked in step S16 whether the absolute value resulting as the difference between the damping values A1 and A2 is within predefinable limits. If this is the case, the difference value ΔA is stored in step S 17 and is available for subsequent volume corrections in step S6 or S14. Otherwise, the program returns directly to step S7. Even if no difference value ΔA is stored in step S17, the actuation of the volume controls 9a, 9b affects the current volume, since the actuation of the actuators 7, 8 runs parallel to the information processing in the program described.

Wird im Schritt S7 ein Ausbleiben der TA-Kennung festgestellt, so liefert im Schritt S13 der Mikroprozessor 10 ein Abstimmsignal, das den Tuner 1 auf das ursprünglich empfangene Hörfunkprogramm abstimmt, und im Schritt S14 wird die Dämpfung der Stellglieder 7, 8 um den Differenzbetrag ΔA gegensinnig zur Lautstärkeverstellung im Schritt S6 korrigiert. Damit endet das Programm und kehrt zum Startpunkt zurück. Es ist leicht zu erkennen, daß bei nachfolgenden Programmwechseln die Lautstärkeanpassung automatisch erfolgt, jedoch bei jedem Wechsel auf ein Verkehrsfunkprogramm erneut die Möglichkeit besteht, den Differenzwert ΔA den Wünschen des Gerätebenutzers oder den programmtechnischen Gegebenheiten anzupassen. Eine Veränderung der Grundlautstärke durch Betätigen der Bedienelemente 9a, 9b während des Empfangs des laufenden Programms sowie nach bereits erfolgter Abspeicherung eines Differenzwertes ΔA innerhalb der Zeitspanne einer jeweiligen Verkehrsdurchsage hat keinen Einfluß auf den automatischen Lautstärkeausgleich beim Programmwechsel.If the TA identifier is not found in step S7, the microprocessor 10 supplies a tuning signal in step S13, which tunes the tuner 1 to the radio program originally received, and in step S14 the actuators 7, 8 are attenuated by the difference ΔA corrected in the opposite direction to the volume adjustment in step S6. This ends the program and returns to the starting point. It is easy to see that in subsequent Program change The volume is adjusted automatically, but with each change to a traffic program there is again the possibility to adjust the difference ΔA to the wishes of the device user or the program conditions. A change in the basic volume by operating the control elements 9a, 9b while the current program is being received and after a difference value ΔA has already been stored within the time period of a respective traffic announcement has no influence on the automatic volume compensation when changing the program.

Werden mit Hilfe der RDS-Daten im EON-Betrieb Querverweise auf mehrere im jeweiligen Empfangsgebiet zu empfangende Verkehrsfunkprogramme erteilt, so daß ein Rundfunkempfänger automatisch auf Verkehrsdurchsagen verschiedener Programmketten umgeschaltet werden kann, so ist es notwendig, daß unterschiedliche Differenzwerte ΔA zur Umschaltung zwischen dem laufend empfangenen Programm und dem jeweils während einer Verkehrsmeldung gerade empfangenen Verkehrsfunkprogramm abgespeichert werden. Zur Unterscheidung der verschiedenen Differenzwerte ΔA werden diese den jeweilgen PI-Codes (PI = Programme Identification) der empfangenen Verkehrsfunkprogramme zugeordnet. Auf diese Weise sind auch Lautstärkeanpassungen beim automatischen Umschalten auf verschiedene Programmketten möglich.If the RDS data in EON mode are used to cross-reference several traffic radio programs to be received in the respective reception area, so that a radio receiver can be switched automatically to traffic announcements of different program chains, it is necessary that different difference values ΔA are used to switch between the one currently being received Program and the traffic program received during a traffic report. To differentiate the different difference values ΔA, these are assigned to the respective PI codes (PI = Program Identification) of the traffic program received. In this way, volume adjustments are also possible when switching automatically to different program chains.

Die gleiche Problematik der unterschiedlichen Lautstärken ergibt sich auch bei der sendergesteuerten Umschaltung eines Rundfunkempfängers auf die Wiedergabe einer Verkehrsmeldung während des Abspielens einer Tonträgeraufzeichnung (z.B. Compact-Cassette oder Compact-Disc). Die Pegelunterschiede hängen sowohl von programmgebundenen als auch signalquellenbedingten Faktoren ab. In einer vorteilhaften Ausgestaltung der Erfindung kann in Analogie zum vorbeschriebenen Steuerungsablauf auch für diesen Betriebsfall eine Anpassung der Lautstärken vorgenommen werden. Die Differenzwerte ΔA zur Korrektur der Dämpfung der Stellglieder 7, 8 werden zusätzlich zu den im EON-Empfangsbetrieb gewonnenen Werten gespeichert und entsprechend dem Betriebsfall abgerufen.The same problem of the different volume levels also arises with the transmitter-controlled switchover of a radio receiver to the playback of a traffic announcement while playing a sound carrier recording (e.g. compact cassette or compact disc). The level differences depend on both program-related and signal source-related factors. In an advantageous embodiment of the invention, analogy to the control sequence described above, the volume can also be adjusted for this operating case. The difference values ΔA for correcting the damping of the actuators 7, 8 are stored in addition to the values obtained in the EON reception mode and are called up according to the operating case.

Claims (3)

Mikroprozessorgesteuerter Rundfunkempfänger, insbesondere Autoradio, mit elektronischen Stellgliedern (7, 8) zum Einstellen der Lautstärke, mit einem RDS-Demodulator (6) zur Gewinnung binärer RDS-Daten, mit einer Einrichtung zum automatischen Umschalten auf ein Verkehrsfunkprogramm im EON-Betrieb und mit einem Speicher zum Ablegen lautstärkespezifischer Einstellparameter, gekoppelt an die PI-Codes der einzelnen Verkehrsfunkprogramme,
dadurch gekennzeichnet, daß - der Mikroprozessor (10) den beim automatischen Umschalten auf ein Verkehrsfunkprogramm auftretenden Lautstärkesprung erkennt, indem er die beim erstmaligen manuellen Nachstellen der Lautstärke durch den Gerätebenutzer mit Hilfe der Bedienelemente (9a, 9b) entstehende Differenz der Dämpfungswerte der Stellglieder (7, 8) erfaßt, - der Mikroprozessor (10) nach dem automatischen Umschalten auf ein Verkehrsfunkprogramm die endgültig festgestellte Differenz (ΔA) der Dämpfungswerte der Stellglieder (7, 8) automatisch abspeichert, wenn innerhalb einer Zeitspanne (t₁) nach beendeter Betätigung der Bedienelemente (9a, 9b) kein erneuter Befehl zur Lautstärkeverstellung erfolgt, - der Mikroprozessor (10) bei jedem nachfolgenden Programmwechsel im EON-Betrieb die Lautstärke automatisch anpaßt, indem er die Dämpfung der Stellglieder (7, 8) um die zuvor abgespeicherte Differenz (ΔA) korrigiert, - der Mikroprozessor (10) die jeweilige Differenz (ΔA) der Dämpfungswerte der Stellglieder (7, 8) für verschiedene, im EON-Betrieb empfangene Verkehrsfunkprogramme konstant beibehält, auch wenn während der Wiedergabe des laufenden Programms die Grundlautstärke mit Hilfe der Bedienelemente (9a, 9b) verändert wird. Microprocessor-controlled radio receiver, in particular car radio, with electronic actuators (7, 8) for adjusting the volume, with an RDS demodulator (6) for obtaining binary RDS data, with a device for automatically switching to a traffic program in EON mode and with one Memory for storing volume-specific setting parameters, linked to the PI codes of the individual traffic programs,
characterized in that - The microprocessor (10) detects the volume jump occurring when switching automatically to a traffic program by detecting the difference in the attenuation values of the actuators (7, 8) that occurs when the device user manually adjusts the volume with the help of the control elements (9a, 9b) , - The microprocessor (10) after the automatic Switching to a traffic program automatically saves the finally determined difference (ΔA) of the damping values of the actuators (7, 8) if there is no renewed command to adjust the volume within a period of time (t₁) after actuation of the controls (9a, 9b). - The microprocessor (10) automatically adjusts the volume for each subsequent program change in EON mode by correcting the damping of the actuators (7, 8) by the previously stored difference (ΔA), - The microprocessor (10) constantly maintains the respective difference (ΔA) in the attenuation values of the actuators (7, 8) for various traffic radio programs received in EON mode, even if the basic volume is reproduced with the help of the operating elements (9a, 9b) is changed. Mikroprozessorgesteuerter Rundfunkempfänger nach Anspruch 1,
dadurch gekennzeichnet, daß - der Mikroprozessor (10) die als Lautstärkeanpassung nach einem automatischen Wechsel auf ein Verkehrsfunkprogramm im EON-Betrieb erkannte Differenz (ΔA) der Dämpfungswerte der Stellglieder (7, 8) nur dann abspeichert, wenn ihr Wert innerhalb vorgegebener Grenzen liegt, - der Mikroprozessor (10) eine darüber hinausgehende Veränderung der Lautstärke als Korrektur der Lautstärke-Grundeinstellung wertet und nicht als Lautstärkeanpassung erfaßt. Microprocessor-controlled radio receiver according to claim 1,
characterized in that - The microprocessor (10) as a volume adjustment after an automatic Switching to a traffic program in EON mode only saves the detected difference (ΔA) in the damping values of the actuators (7, 8) if their value is within specified limits, - The microprocessor (10) evaluates an additional change in volume as a correction of the basic volume setting and does not record it as a volume adjustment. Mikroprozessorgesteuerter Rundfunkempfänger nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
der Mikroprozessor (10) die Anpassung der Lautstärke entsprechend den Merkmalen der Ansprüche 1 und/oder 2 auch beim automatischen Umschalten des Rundfunkempfängers von Tonträgerwiedergabe (z.B. Compact-Cassette, Compact-Disc, etc.) auf Verkehrsfunkdurchsage vornimmt.Microprocessor-controlled radio receiver according to claim 1 or 2,
characterized in that
the microprocessor (10) adjusts the volume in accordance with the features of claims 1 and / or 2 even when the radio receiver automatically switches from sound carrier playback (for example compact cassette, compact disc, etc.) to traffic announcements.
EP93101260A 1992-02-29 1993-01-28 RDS broadcast receiver with a device for adapting the volume in EON receiving mode Expired - Lifetime EP0558918B1 (en)

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DE4206394 1992-02-29

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WO1998011666A1 (en) * 1996-09-11 1998-03-19 Robert Bosch Gmbh A sounder control system
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EP1432156A1 (en) * 2002-12-20 2004-06-23 Sony International (Europe) GmbH Method for monitoring broadcast signals at alternative frequencies and gain control unit
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EP0618693A1 (en) * 1993-03-31 1994-10-05 Victor Company Of Japan, Limited Sound field and tone control device for FM radio receiver using radio data signals
EP0795974A3 (en) * 1996-02-17 2001-05-09 Robert Bosch Gmbh Method and receiver for the reproduction of received spoken messages and method for transmitting spoken messages
GB2312799B (en) * 1996-04-30 2000-07-19 Sgs Thomson Microelectronics A circuit and method for automatically adjusting the amplitude of broadcast audio signals
GB2312799A (en) * 1996-04-30 1997-11-05 Sgs Thomson Microelectronics Arrangement for reducing audio level when a received signal is increased, for example during TV adverts
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AU716509B2 (en) * 1996-09-11 2000-02-24 Robert Bosch Gmbh A sounder control system
EP0925644A1 (en) * 1996-09-11 1999-06-30 Robert Bosch Gmbh A sounder control system
EP0925644A4 (en) * 1996-09-11 2001-06-20 Bosch Gmbh Robert A sounder control system
WO1998011666A1 (en) * 1996-09-11 1998-03-19 Robert Bosch Gmbh A sounder control system
WO2001017106A1 (en) * 1999-08-28 2001-03-08 Volkswagen Aktiengesellschaft Method and device for operating an audio device in a motor vehicle
EP1432156A1 (en) * 2002-12-20 2004-06-23 Sony International (Europe) GmbH Method for monitoring broadcast signals at alternative frequencies and gain control unit
WO2004057781A1 (en) * 2002-12-20 2004-07-08 Sony Deutschland Gmbh Method for monitoring broadcast signals at alternative frequencies and gain control unit
US7369826B2 (en) 2002-12-20 2008-05-06 Sony Deutschland Gmbh Method for monitoring broadcast signals at alternative frequencies and gain control unit
GB2413906A (en) * 2004-04-21 2005-11-09 Imagination Tech Ltd Radio volume control system
EP2571181A3 (en) * 2011-09-14 2014-02-26 TechniSat Digital GmbH Method for setting the volume of a radio receiver

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EP0558918B1 (en) 1997-12-03
DE4206394A1 (en) 1993-09-16
DE4206394C2 (en) 1994-06-09
EP0558918A3 (en) 1993-11-24
DE59307752D1 (en) 1998-01-15

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