EP0659029A2 - Dispositif de sélection d'un haut-parleur - Google Patents

Dispositif de sélection d'un haut-parleur Download PDF

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Publication number
EP0659029A2
EP0659029A2 EP94119808A EP94119808A EP0659029A2 EP 0659029 A2 EP0659029 A2 EP 0659029A2 EP 94119808 A EP94119808 A EP 94119808A EP 94119808 A EP94119808 A EP 94119808A EP 0659029 A2 EP0659029 A2 EP 0659029A2
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
radio
audio device
motor vehicle
speaker
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
EP94119808A
Other languages
German (de)
English (en)
Other versions
EP0659029A3 (fr
EP0659029B1 (fr
Inventor
Eberhard Grundig E.M.V. Schwarz
Heinrich Grundig E.M.V. Fischelmayer
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.)
Grundig AG
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Publication of EP0659029A2 publication Critical patent/EP0659029A2/fr
Publication of EP0659029A3 publication Critical patent/EP0659029A3/fr
Application granted granted Critical
Publication of EP0659029B1 publication Critical patent/EP0659029B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments

Definitions

  • the invention relates to a device for switching a loudspeaker according to the preamble of claim 1.
  • the invention relates to the switching of a loudspeaker installed in a motor vehicle from the loudspeaker output of an audio device to the loudspeaker output of a radio device.
  • an audio device is understood to mean a car radio or a cassette device or a CD player and other devices, as well as combinations thereof.
  • a radio in turn is understood here to mean a car telephone, a company radio, a speaking on-board computer or the like.
  • Radio equipment installed in a motor vehicle is state of the art.
  • the tendency to install such devices is increasing, be it that these devices are already installed at the factory or retrofitted using a retrofit kit.
  • eye contact with the listener is often required, which reduces the driver's attention to road traffic.
  • the speakerphone includes a microphone and an earphone.
  • the earphone can be removed by unwinding the earphone cable from a cable drum stored in the housing of the device. After using the earphone, the cable is rewound either by hand or by motor from the cable drum. Hearing through the earphones prevents acoustic feedback.
  • the inclusion and storage of the earphones demands a certain amount of attention from the user, which distracts him from driving the motor vehicle.
  • EP-A1-0368291 describes a further hands-free device which also represents an elegant solution. While the microphone is attached to a suitable location on the front of the motor vehicle, the Loudspeakers at the top of the driver's backrest, i.e. very close to the driver's ear. With regard to avoiding feedback, this loudspeaker arrangement is certainly cheap. To implement this, however, complex wiring must be carried out. This version is not particularly suitable for retrofitting in a motor vehicle.
  • double-coil loudspeakers are installed, which are controlled both by the audio device installed in the motor vehicle and by the radio device.
  • double-coil speakers are installed, for example, instead of an existing speaker for the audio device. This solves the spatial problem, but the reproduction quality and the efficiency are not particularly high if an audio signal is reproduced on one coil and a radio signal is reproduced on the other coil.
  • installing a double-coil speaker is more expensive than the existing single-coil speaker.
  • the object of the invention is to provide a hands-free device for a motor vehicle, which ensures the correct reproduction of the output signal of a radio with the least possible material and labor, without manual activity by the motor vehicle driver.
  • One is also in the motor vehicle
  • the audio device in use must not interfere with the playback of the radio.
  • the device should in particular also be suitable for retrofitting in a motor vehicle.
  • FIG. 1 A sound system in a motor vehicle is shown in FIG. 1 using a block diagram. Loudspeakers (4), (11), (12), (13) and (14) are connected to an audio device (2) via the loudspeaker outputs (5). The lines to the individual loudspeakers are marked with (5.1) to (5.6). Crossovers (15) are provided in front of the speakers (4), (11) and (12).
  • a radio (3) is also integrated in the circuit.
  • the audio device (2) can be, for example, a car radio or a cassette device or a CD player and others.
  • a radio telephone (3) can be understood here as a car telephone or a company radio or a speaking on-board computer or the like.
  • a speaking on-board computer does not fall into the "radio" category, but in this case its assignment under the collective term "radio" is permitted.
  • the driver's front loudspeaker installed in the motor vehicle is expediently used as the loudspeaker (4).
  • a switch module (1) is inserted into the circuit to selectively control the loudspeaker (4) from the audio device or from the radio device.
  • the speaker output (5.3) of the audio device (2) and the speaker output (6) of the radio (3) are connected to the switch module (1).
  • This line (9) leads to the mute input (16) of the audio device.
  • the audio device (2) and the switch module (1) are connected by the ground line (18) and the voltage supply line (17) for the switch module (1).
  • a line labeled (19) leads from the switch module (1) to the common loudspeaker (4).
  • the switch module (1) connects the loudspeaker output (6) of the radio to the loudspeaker (4). If the audio device (2) is now put into operation, the switch module (1) switches the speaker output (5.3) to the speaker (4), the speaker output (6) is separated from it. If the radio (3) becomes active, for example when there is an incoming call, a line switch (9) activates a mute function, which is not to be dealt with here, because it is known, in the audio device. All speakers connected to the audio device are muted. The speaker output (6) of the radio (3) is switched to the speaker (4) by the switch module (1), the speaker output (5.3) of the audio device (2) is separated from it.
  • the hands-free system is now ready for operation, the user can, for example, make calls without having to carry out any manual activity.
  • Said mute input (16) is present in the audio device of the exemplary embodiment listed.
  • the Setup also works with audio devices without automatic mute. In this case, however, the user must turn the volume control of the audio device to zero when there is an incoming call. However, this is usually an activity that does not require too much attention and hardly distracts the driver.
  • Switching the loudspeaker (4) from the audio device (2) to the radio (3) using the switch module (1) works in exactly the same way as with an audio device with mute.
  • the switch module (1) is constructed in such a way that the hands-free system functions perfectly even when there is no audio device (for example in the removed state for repair and the like).
  • the switch module (1) consists essentially of an electronic circuit (7) and an electromechanical switch (8).
  • a relay is preferably used as the electromechanical switch (8).
  • the relay ensures a potential-free switching process, safe electrical isolation, no reaction and low contact resistance.
  • the position of the switching fingers (21) in the relay is such that the radio device (3) with the loudspeaker ( 4) is connected (normally closed contacts).
  • the electronic circuit (7) in the switching module (1) is constructed in such a way that its function is not impaired by high-frequency interference signals.
  • the resistors (20) have the function that, in the case of capacitive loudspeaker outputs from audio or radio devices, the capacitors are not charged when switching over must take place, which would result in a crack. Instead, the capacitors are constantly kept in their normal state in the charge, so there is no change in potential and therefore no cracking.
EP94119808A 1993-12-16 1994-12-15 Dispositif de sélection d'un haut-parleur Expired - Lifetime EP0659029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4342917A DE4342917A1 (de) 1993-12-16 1993-12-16 Einrichtung zum Umschalten eines Lautsprechers
DE4342917 1993-12-16

Publications (3)

Publication Number Publication Date
EP0659029A2 true EP0659029A2 (fr) 1995-06-21
EP0659029A3 EP0659029A3 (fr) 1996-02-07
EP0659029B1 EP0659029B1 (fr) 2000-10-18

Family

ID=6505174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119808A Expired - Lifetime EP0659029B1 (fr) 1993-12-16 1994-12-15 Dispositif de sélection d'un haut-parleur

Country Status (3)

Country Link
EP (1) EP0659029B1 (fr)
AT (1) ATE197107T1 (fr)
DE (2) DE4342917A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036759A1 (fr) * 1998-11-27 2000-06-22 Kyrel Oy Ensemble permettant un fonctionnement en mode mains libres d'un telephone
EP1341394A1 (fr) * 2002-02-27 2003-09-03 Thomson Licensing S.A. Dispositif électronique de traitement d'un signal audio
DE202011003798U1 (de) 2011-03-04 2011-05-26 Hilse, Andreas, 10437 Reisemobiles Soundsystem mit automatischer Quellenumschaltung

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19614148C1 (de) * 1996-04-10 1997-09-04 Bosch Gmbh Robert Fernsprechendgerät mit einem Anschluß für einen Telefon-Handapparat
DE19725284C2 (de) * 1997-06-13 1999-08-05 Mechatronik Automobilausruestu Vorrichtung und Verfahren zum Einbau einer Freisprechschaltung für ein Telefon in ein Kraftfahrzeug
DE19742797C1 (de) * 1997-09-27 1999-04-22 Grundig Ag Kraftfahrzeugkommunikationsvorrichtung
JP3042681B2 (ja) * 1998-04-15 2000-05-15 怡利電子工業股▲ひん▼有限公司 自動車音響装置のスピーカと結合した携帯電話握持不要受話器
DE19942858C2 (de) * 1999-09-08 2003-04-03 Am3 Automotive Multimedia Ag Sitzplatzbezogene Beschallungseinrichtung
DE19945620A1 (de) * 1999-09-23 2001-04-12 Siemens Ag Befestigungsvorrichtung für ein Mobiltelefon
US7096047B2 (en) 2001-11-30 2006-08-22 Motorola, Inc. Electronic audio accessory for use with automotive stereo loudspeakers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316818A1 (de) 1983-05-07 1984-11-08 Hans-Hellmut Dipl.-Ing. 2061 Sülfeld Ernst Sonnenblende mit audiovisuellen einrichtungen
EP0368291A1 (fr) 1988-11-09 1990-05-16 Nokia Mobile Phones Ltd. Dispositif pour communication télephonique en duplex
EP0483956A2 (fr) 1990-10-30 1992-05-06 Nokia Mobile Phones (U.K.) Limited Combinaison d'un radiorécepteur et d'un radiotéléphone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127713U (fr) * 1976-03-26 1977-09-28
US4060766A (en) * 1976-05-07 1977-11-29 Nissan Denshi Company Limited Automatic signal switching apparatus for a combined transceiver and radio or tape recorder set
WO1987000718A1 (fr) * 1985-07-19 1987-01-29 Custom Product Development Pty. Ltd. Systeme telephonique mobile
DE3903461A1 (de) * 1989-02-06 1990-08-09 Grundig Emv Kombination eines autoradios mit anderen kommunikationsmitteln
AU5095190A (en) * 1989-02-14 1990-09-05 In-Car Systems Limited Vehicle telephone apparatus
DE9308197U1 (fr) * 1993-06-01 1993-07-29 E. Lead Electronic Co. Ltd., Changhua, Tw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316818A1 (de) 1983-05-07 1984-11-08 Hans-Hellmut Dipl.-Ing. 2061 Sülfeld Ernst Sonnenblende mit audiovisuellen einrichtungen
EP0368291A1 (fr) 1988-11-09 1990-05-16 Nokia Mobile Phones Ltd. Dispositif pour communication télephonique en duplex
EP0483956A2 (fr) 1990-10-30 1992-05-06 Nokia Mobile Phones (U.K.) Limited Combinaison d'un radiorécepteur et d'un radiotéléphone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036759A1 (fr) * 1998-11-27 2000-06-22 Kyrel Oy Ensemble permettant un fonctionnement en mode mains libres d'un telephone
EP1341394A1 (fr) * 2002-02-27 2003-09-03 Thomson Licensing S.A. Dispositif électronique de traitement d'un signal audio
DE202011003798U1 (de) 2011-03-04 2011-05-26 Hilse, Andreas, 10437 Reisemobiles Soundsystem mit automatischer Quellenumschaltung

Also Published As

Publication number Publication date
ATE197107T1 (de) 2000-11-15
EP0659029A3 (fr) 1996-02-07
EP0659029B1 (fr) 2000-10-18
DE4342917A1 (de) 1995-06-22
DE59409552D1 (de) 2000-11-23

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