EP0224763A2 - Car radio or an apparatus combining it with a microprocessor-controlled warning tone device - Google Patents

Car radio or an apparatus combining it with a microprocessor-controlled warning tone device Download PDF

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Publication number
EP0224763A2
EP0224763A2 EP86115657A EP86115657A EP0224763A2 EP 0224763 A2 EP0224763 A2 EP 0224763A2 EP 86115657 A EP86115657 A EP 86115657A EP 86115657 A EP86115657 A EP 86115657A EP 0224763 A2 EP0224763 A2 EP 0224763A2
Authority
EP
European Patent Office
Prior art keywords
warning tone
car radio
signal
microprocessor
volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86115657A
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German (de)
French (fr)
Other versions
EP0224763A3 (en
EP0224763B1 (en
Inventor
Franz Baumgartner
Herbert Anding
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Publication date
Application filed by Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Publication of EP0224763A2 publication Critical patent/EP0224763A2/en
Publication of EP0224763A3 publication Critical patent/EP0224763A3/en
Application granted granted Critical
Publication of EP0224763B1 publication Critical patent/EP0224763B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands

Definitions

  • the invention relates to a car radio or a combination of devices with a car radio of the type specified in the preamble of claim 1.
  • a car radio cassette player combination with a station search circuit and a microprocessor-controlled warning tone device is known.
  • the microprocessor generates a swelling in the event that the vehicle equipped with the combination device leaves a traffic radio transmission area and / or the station search circuit does not find a traffic radio station worth receiving Warning sound signal, which is reproduced via the NF amplifier of the car radio.
  • the base point of the volume control is sensed via a separate control line of the processor, which means that the volume of the warning tone is increased, particularly when the volume control is turned back far.
  • the invention has for its object to design a car radio or a device combination with car radio of the type specified in the preamble of claim 1 so that despite the use of simple microprocessors there is the possibility to start the warning tone at the same time, fade in and increase the volume overall.
  • the car radio or the car radio combination according to the invention has the advantage over the prior art that, with the same success, much simpler and less expensive microprocessors can be used, since they neither have a clocked, amplitude-increasing warning signal make available, must still have separate control connections, on the one hand to achieve a smooth warning tone display and on the other hand to ensure that the base point of the volume control is only felt after the start of the warning tone. It is necessary to feel the base so that the warning tone is clearly audible, especially when the device is muted or operated at a very low volume.
  • the slow fade-in of the warning tone and the foot-point scanning of the volume control are advantageously carried out via a single, already existing device.
  • the microprocessor 1 used here provides a warning sound signal 6 of constant amplitude, which is advantageously supplied both to the LF amplifier 5 and to an integrating element 2 connected upstream of the controllable actuator 3 for the foot point sensing of the volume control 4.
  • the integrating element 2 uses the warning sound signal 6, which preferably has a rectangular shape, to produce a DC voltage control signal 7 that slowly increases in amplitude.
  • the controllable actuator 3 which according to the invention has a forward resistance that depends on the size of the control signal points and is preferably designed as a transistor, the base point of the volume control 4 can now be slowly felt and the warning tone to be reproduced via the AF amplifier 5 can be gradually faded in.
  • the integrator 2 required for obtaining the DC voltage control signal 7 can be realized very easily as a transistor stage.

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

Abstract

In a car radio or a combined apparatus with a car radio having an automatic station seeking circuit, a microprocessor-controlled warning tone device which outputs a warning tone via the AF amplifier when the transmitting area identification signal for a desired traffic programme transmitter can no longer be received and/or in the event of an unsuccessful search for a new traffic programme transmitter which is more suitable for reception, and a controllable control element which opens the low end of the volume controller when the warning tone starts and causes an increase in the volume, the microprocessor generates a constant-amplitude warning tone signal which is supplied to an integrating section preceding the controllable control element. The integrating section generates a slowly increasing direct-voltage control signal from the warning tone signal and outputs this control signal to the controllable control element. The controllable control element itself has a forward resistance which depends on the magnitude of the control signal.

Description

Die Erfindung betrifft ein Autoradio oder eine Geräte­kombination mit Autoradio der im Oberbegriff des An­spruchs 1 angegebenen Art.The invention relates to a car radio or a combination of devices with a car radio of the type specified in the preamble of claim 1.

Aus "Grundig Technische Informationen 1/2, 1984, Sei­ten 73 bis 101", ist eine Autoradio-Cassettenspieler-­Kombination mit einer Sendersuchlaufschaltung und einer mikroprozessorgesteuerten Warntoneinrichtung bekannt. Hierbei erzeugt der Mikroprozessor für den Fall, daß das mit dem Kombinationsgerät ausgestattete Fahrzeug einen Verkehrsfunkssendebereich verläßt und/­oder die Sendersuchlaufschaltung keinen empfangswürdi­gen Verkehrsfunksender findet, ein anschwellendes Warntonsignal, welches über den NF-Verstärker des Autoradios wiedergegeben wird. Gleichzeitig wird über eine separate Steuerleitung des Prozessors der Fußpunkt des Lautstärkestellers aufgetastet, wo­durch insbesondere bei weit zurückgedrehtem Laut­stärkesteller eine zusätzliche Anhebung der Warnton­lautstärke erfolgt.From "Grundig Technical Information 1/2, 1984, pages 73 to 101", a car radio cassette player combination with a station search circuit and a microprocessor-controlled warning tone device is known. In this case, the microprocessor generates a swelling in the event that the vehicle equipped with the combination device leaves a traffic radio transmission area and / or the station search circuit does not find a traffic radio station worth receiving Warning sound signal, which is reproduced via the NF amplifier of the car radio. At the same time, the base point of the volume control is sensed via a separate control line of the processor, which means that the volume of the warning tone is increased, particularly when the volume control is turned back far.

Die bekannte Art der automatischen Warntoneinblendung ist jedoch insbesondere im Hinblick auf den hierzu erforderlichen Mikroprozessor aufwendig und kostspie­lig, da dieser insgesamt sehr viele Signal- und Steueranschlüsse aufweisen muß. Der Einsatz derarti­ger Prozessoren ist daher nur bei Geräten der oberen Preisklasse vertretbar.However, the known type of automatic warning sound fade-in is complex and costly, in particular with regard to the microprocessor required for this, since it must have a large number of signal and control connections overall. The use of such processors is therefore only acceptable for devices in the upper price range.

Bei billigeren Geräten werden in der Regel einfachere Mikroprozessoren eingesetzt, die lediglich über einen für das Warntonsignal selbst vorgesehenen Anschluß verfügen. Ein Steueranschluß für die Auftastung der Lautstärke fehlt. Die zusätzliche Anhebung der Laut­stärke erfolgt dort unabhängig vom Start des Warntons unmittelbar durch ein aus dem Verkehrsfunkdecoder kommendes Signal, das entweder bei zu schwachem HF-­Signal des Verkehrsfunksenders oder bei fehlender Bereichskennung anliegt. Da bei Suchlaufempfängern der Warnton erst gestartet wird, wenn kein neuer, empfangswürdiger Verkehrsfunksender gefunden wird, jedoch das Steuersignal für die Anhebung der Laut­stärke bereits zu Beginn des Suchlaufs anliegt, ergibt sich insbesondere bei Cassettenbetrieb der Nachteil, daß die Lautstärke der Cassettenwieder­gabe während der Suchlaufphase ungewollt angehoben wird, was der Zuhörer als störend empfindet. Dieser Nachteil macht sich bei der Verwendung eines Booster-Verstärkers noch stärker bemerkbar.In the case of cheaper devices, simpler microprocessors are generally used, which only have a connection provided for the warning tone signal itself. A control connection for the keying of the volume is missing. The additional increase in volume takes place there, regardless of the start of the warning tone, directly by a signal coming from the traffic radio decoder, which is present either when the HF signal from the traffic radio transmitter is too weak or when there is no area identification. Since the warning tone for search receivers is only started when no new traffic receiver that can be received is found, However, the control signal for increasing the volume is already present at the start of the search, in particular with cassette operation there is the disadvantage that the volume of the cassette playback is increased unintentionally during the search phase, which the listener finds annoying. This disadvantage is even more noticeable when using a booster amplifier.

Der Erfindung liegt die Aufgabe zugrunde, ein Auto­radio oder eine Gerätekombination mit Autoradio der im Oberbegriff des Anspruchs 1 angegebenen Art so auszubilden, daß trotz Verwendung einfacher Mikro­prozessoren die Möglichkeit besteht, gleichzeitig den Warnton zu starten, einzublenden und die Laut­stärke insgesamt anzuheben.The invention has for its object to design a car radio or a device combination with car radio of the type specified in the preamble of claim 1 so that despite the use of simple microprocessors there is the possibility to start the warning tone at the same time, fade in and increase the volume overall.

Diese Aufgabe wird gemäß der Erfindung durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merk­male gelöst. Vorteilhafte Ausgestaltungen der Erfin­dung sind in den Unteransprüchen gekennzeichnet.This object is achieved according to the invention by the features specified in the characterizing part of patent claim 1. Advantageous embodiments of the invention are characterized in the subclaims.

Das Autoradio oder die Autoradiokombination gemäß der Erfindung hat gegenüber dem Stand der Technik insbesondere den Vorteil, daß bei gleichem Erfolg wesentlich einfachere und kostengünstigere Mikro­prozessoren verwendet werden können,da sie weder ein getaktetes, amplitudenmäßig zunehmendes Warntonsignal zur Verfügung stellen, noch separate Steueranschlüsse aufweisen müssen, um einerseits eine gleitende Warn­toneinblendung zu erzielen und andererseits zu gewähr­leisten, daß erst nach dem Start des Warntons der Fußpunkt des Lautstärkestellers aufgetastet wird. Die Auftastung des Fußpunktes ist notwendig, damit ins­besondere bei stummgeschaltetem oder mit sehr kleiner Lautstärke betriebenem Gerät der Warnton deutlich hörbar wird. Bei dem Gerät gemäß der Erfindung erfolgt die langsame Einblendung des Warntons und die Fußpunkt­auftastung des Lautstärkestellers in vorteilhafter Weise über eine einzige, ohnehin vorhandene Einrichtung.The car radio or the car radio combination according to the invention has the advantage over the prior art that, with the same success, much simpler and less expensive microprocessors can be used, since they neither have a clocked, amplitude-increasing warning signal make available, must still have separate control connections, on the one hand to achieve a smooth warning tone display and on the other hand to ensure that the base point of the volume control is only felt after the start of the warning tone. It is necessary to feel the base so that the warning tone is clearly audible, especially when the device is muted or operated at a very low volume. In the device according to the invention, the slow fade-in of the warning tone and the foot-point scanning of the volume control are advantageously carried out via a single, already existing device.

Ein Ausführungsbeispiel der Erfindung ist im folgenden anhand einer Zeichnung näher erläutert.An embodiment of the invention is explained in more detail below with reference to a drawing.

Der hierbei verwendete Mikroprozessor 1 stellt ein Warntonsignal 6 konstanter Amplitude zur Verfügung, das in vorteilhafter Weise sowohl dem NF-Verstärker 5 als auch einem dem steuerbaren Stellglied 3 für die Fußpunktauftastung des Lautstärkestellers 4 vorge­schaltetem Integrierglied 2 zugeführt wird. Das Inte­grierglied 2 erzeugt aus dem Warntonsignal 6, das vorzugsweise einen rechteckförmigen Verlauf hat, ein in seiner Amplitude langsam ansteigendes Gleich­spannungs-Steuersignal 7. Über das steuerbare Stell­glied 3, das gemäß der Erfindung einen von der Größe des Steuersignals abhängigen Durchlaßwiderstand auf­ weist und bevorzugt als Transistor ausgebildet ist, kann nun der Fußpunkt des Lautstärkestellers 4 lang­sam aufgetastet und der über den NF-Verstärker 5 wiederzugebende Warnton allmählich eingeblendet wer­den.The microprocessor 1 used here provides a warning sound signal 6 of constant amplitude, which is advantageously supplied both to the LF amplifier 5 and to an integrating element 2 connected upstream of the controllable actuator 3 for the foot point sensing of the volume control 4. The integrating element 2 uses the warning sound signal 6, which preferably has a rectangular shape, to produce a DC voltage control signal 7 that slowly increases in amplitude. Via the controllable actuator 3, which according to the invention has a forward resistance that depends on the size of the control signal points and is preferably designed as a transistor, the base point of the volume control 4 can now be slowly felt and the warning tone to be reproduced via the AF amplifier 5 can be gradually faded in.

Das zur Gewinnung des Gleichspannungs-Steuersignals 7 erforderliche Integrierglied 2 läßt sich sehr ein­fach als Transistor stufe realisieren.The integrator 2 required for obtaining the DC voltage control signal 7 can be realized very easily as a transistor stage.

Claims (3)

1. Autoradio oder Gerätekombination mit Autoradio mit einer automatischen Sendersuchlaufschaltung, einer mikroprozessorgesteuerten Warntoneinrichtung, die über den NF-Verstärker bei nicht mehr empfangbarer Sende­bereichskennung für einen gewünschten Verkehrsfunk­sender und/oder bei einem vergeblichen Suchlauf nach einem neuen, empfangswürdigeren Verkehrsfunksender einen Warnton abgibt, sowie einem steuerbaren Stell­glied, das beim Start des Warntons den Fußpunkt des Lautstärkestellers auftastet und eine Anhebung der Lautstärke bewirkt, dadurch gekenn­zeichnet, daß der Mikroprozessor (1) ein Warntonsignal (6) konstanter Amplitude erzeugt, das einem dem steuerbaren Stellglied (3) vorgeschalteten Integrierglied (2) zugeführt ist, das aus dem Warn­tonsignal (6) ein langsam ansteigendes Gleichspan­nungs-Steuersignal (7) erzeugt und dieses an das steuerbare Stellglied (3) abgibt, und daß das steuer­bare Stellglied (3) einen von der Größe des Steuer­signals (7) abhängigen Durchlaßwiderstand aufweist.1.Radio or device combination with car radio with an automatic station search circuit, a microprocessor-controlled warning tone device which emits a warning tone via the NF amplifier if the transmission area identifier is no longer receivable for a desired traffic information station and / or if a search is unsuccessful for a new traffic station that is worth receiving, and one Controllable actuator which, when the warning tone starts, probes the base point of the volume control and increases the volume, characterized in that the microprocessor (1) generates a warning tone signal (6) of constant amplitude which is connected to an integrating member (2) connected upstream of the controllable actuator (3) ) is supplied, which generates a slowly increasing DC voltage control signal (7) from the warning signal (6) and this to the controllable actuator (3), and that the controllable actuator (3) has a volume resistance dependent on the size of the control signal (7). 2. Autoradio oder Gerätekombination mit Autoradio nach Anspruch 1, dadurch gekenn­zeichnet, daß das von dem Mikroprozessor (1) abgegebene Warntonsignal (6) einen rechteckförmigen Zeitverlauf hat.2. Car radio or device combination with car radio according to claim 1, characterized in that the warning signal (6) emitted by the microprocessor (1) has a rectangular time profile. 3. Autoradio oder Gerätekombination mit Autoradio nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß als steuerbares Stellglied (3) ein Transistor vorgesehen ist.3. car radio or device combination with car radio according to claim 1 or 2, characterized in that a transistor is provided as a controllable actuator (3).
EP86115657A 1985-12-04 1986-11-11 Car radio or an apparatus combining it with a microprocessor-controlled warning tone device Expired - Lifetime EP0224763B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3542844A DE3542844A1 (en) 1985-12-04 1985-12-04 CAR RADIO OR DEVICE COMBINATION WITH CAR RADIO WITH MICROPROCESSOR CONTROLLED WARNING TONE DEVICE
DE3542844 1985-12-04

Publications (3)

Publication Number Publication Date
EP0224763A2 true EP0224763A2 (en) 1987-06-10
EP0224763A3 EP0224763A3 (en) 1988-09-21
EP0224763B1 EP0224763B1 (en) 1991-04-24

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EP86115657A Expired - Lifetime EP0224763B1 (en) 1985-12-04 1986-11-11 Car radio or an apparatus combining it with a microprocessor-controlled warning tone device

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EP (1) EP0224763B1 (en)
DE (2) DE3542844A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326746A2 (en) * 1988-02-05 1989-08-09 Pioneer Electronic Corporation Radio data system receiver
EP0326747A2 (en) * 1988-02-05 1989-08-09 Pioneer Electronic Corporation Radio data system receiver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GRUNDIG TECHNISCHE INFORMATIONEN, Januar/Februar 1984, Seiten 73-101; H. SINNING et al.: "WKC 3858 VD - Ein Vollstereo-, 4-Endstufen-, Synthesizer-Autoradio mit Reverse-Laufwerk und Dolby-B-NR" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326746A2 (en) * 1988-02-05 1989-08-09 Pioneer Electronic Corporation Radio data system receiver
EP0326747A2 (en) * 1988-02-05 1989-08-09 Pioneer Electronic Corporation Radio data system receiver
EP0326746A3 (en) * 1988-02-05 1990-01-31 Pioneer Electronic Corporation Radio data system receiver
EP0326747B1 (en) * 1988-02-05 1994-08-03 Pioneer Electronic Corporation Radio data system receiver

Also Published As

Publication number Publication date
EP0224763A3 (en) 1988-09-21
EP0224763B1 (en) 1991-04-24
DE3542844A1 (en) 1987-06-11
DE3678906D1 (en) 1991-05-29

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