EP1018288A1 - Systeme d'autoradio - Google Patents

Systeme d'autoradio

Info

Publication number
EP1018288A1
EP1018288A1 EP98928089A EP98928089A EP1018288A1 EP 1018288 A1 EP1018288 A1 EP 1018288A1 EP 98928089 A EP98928089 A EP 98928089A EP 98928089 A EP98928089 A EP 98928089A EP 1018288 A1 EP1018288 A1 EP 1018288A1
Authority
EP
European Patent Office
Prior art keywords
car radio
loudspeakers
speakers
loudspeaker
radio system
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
EP98928089A
Other languages
German (de)
English (en)
Other versions
EP1018288B1 (fr
Inventor
Joachim Wietzke
Karl-Heinz Cording
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1018288A1 publication Critical patent/EP1018288A1/fr
Application granted granted Critical
Publication of EP1018288B1 publication Critical patent/EP1018288B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • 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
    • H04R5/033—Headphones for stereophonic communication

Definitions

  • the invention relates to a car radio system with a car radio and at least two speakers connected to the car radio.
  • the problem underlying the present invention is to enable an improvement in the situation of fellow travelers in the case of diverging listening interests.
  • a car radio system of the type mentioned at the outset is characterized in that at least one of the loudspeakers is provided with a connection socket for connecting a headphone plug and with a switch with which playback via the loudspeakers can be switched off.
  • the above-mentioned problem is solved with the use of a headphone or an earphone with a
  • Plug in a socket of a speaker can be connected.
  • the headphones can also be connected to the rear seats of a motor vehicle in a short way, since loudspeakers are regularly arranged in the rear seat area of the motor vehicle. From home stereo systems or television systems, it is known that headphones can be connected to the device. A connection of the headphones to the control unit of the system, that is to say here to the car radio, is avoided according to the invention because this would result in an impractical cable routing to a headphone holder in a rear seat.
  • the headphones can thus be contacted on the loudspeaker for a passenger in the rear seat and the loudspeaker can be switched off.
  • the connection socket is designed as a switching socket integrating the changeover switch, so that the insertion of a headphone plug leads to the loudspeaker being switched off.
  • loudspeakers are arranged in pairs to enable stereo reproduction.
  • a connection of a headphone to only one loudspeaker and only for its playback channel can therefore only make sense if the car radio is switched to mono playback at the same time.
  • a connection is provided between two loudspeakers provided for receiving different stereo channels and forming a pair of loudspeakers for reproducing both stereo channels via the headphones.
  • a connection is preferably provided between the two loudspeakers and the switch for switching off the loudspeaker is switched on in the signal lines for both loudspeakers.
  • a volume control is attached to the loudspeaker provided with a connection socket, with which the volume of the reproduction can be regulated via the headphones.
  • the desired volume can be set individually by the headphone carrier, so that a corresponding volume change on the car radio itself does not have to take place.
  • both loudspeakers of a pair of loudspeakers with a connection socket for a pair of headphones for both channels of the loudspeakers.
  • both speakers of a pair of speakers can be connected to a socket for a headphone be provided for the relevant channel of the speaker.
  • stereo playback via headphones is only possible if the headphones are equipped with two connection plugs for the two ear loudspeakers and the plugs are inserted into both loudspeaker sockets.
  • FIG. 1 shows a schematic representation of a pair of loudspeakers which has a loudspeaker equipped with a connection socket for a headphone
  • FIG. 2 shows a first embodiment variant for wiring the loudspeakers according to FIG. 1,
  • FIG. 3 shows a second embodiment variant for the wiring of the loudspeakers according to FIG. 1,
  • FIG. 4 shows a circuit variant analogous to a line routing from the car radio to both loudspeakers
  • FIG. 5 shows a further circuit variant for the arrangement according to FIG. 1 analogously to FIG. 3 with a line routing from the car radio to the two loudspeakers,
  • FIG. 6 shows a schematic illustration of a pair of loudspeakers with two loudspeakers of a pair of loudspeakers, to which both headphones can be connected
  • FIG. 7 shows an embodiment variant for wiring the loudspeaker arrangement according to FIG. 6,
  • FIG. 8 shows a schematic illustration of a pair of loudspeakers with connection sockets for connecting headphone plugs for only the respective channel of the loudspeaker
  • FIG. 9 shows an exemplary embodiment for wiring the arrangement according to FIG. 8
  • FIG. 10 shows a modification of the first embodiment variant of the wiring of the loudspeakers according to FIG. 2,
  • FIG. 11 shows a modification of the second embodiment variant for the wiring of the loudspeakers according to FIG. 3.
  • Figure 1 shows two speakers 1, 2 of a pair of speakers, which are installed in a car radio system for playing two different stereo channels in the motor vehicle and are located near the rear seats.
  • the loudspeakers 1, 2 each have a loudspeaker aperture 3 and a grating 4 covering a loudspeaker membrane.
  • One speaker 1 of the pair of speakers 1, 2 is provided with a connection socket 5, into which a headphone plug 6 of headphones 7 with two ear speakers 8, 9 can be inserted, the headphone plug 6 being connected to the headphones 7 via a flexible connecting cable 10.
  • the loudspeaker 1 is also provided with a setting regulator 11 for the volume of the reproduction via the headphones 7.
  • FIG. 1 The arrangement shown in FIG. 1 is intended to play 7 stereo programs via the headphones. Since each of the loudspeakers 1, 2 is only set up for the reproduction of one of the two stereo channels, a connection must be provided between the loudspeakers 1, 2 through which the audio signal for the loudspeaker 2 also reaches the headphones 7.
  • a possible wiring of the arrangement according to Figure 1 is shown in Figure 2.
  • a car radio 12 has two outputs 13, 14 for the two stereo channels L and R. Both stereo channels L, R are supplied in the usual way with two-wire lines.
  • the two wires of the stereo channel L run to the two corresponding connections Shutters of the loudspeaker 1 and the two wires of the stereo channel R to the two connections of the loudspeaker 2.
  • This normal connection to the loudspeakers 1, 2 is established when a switch 15 designed as a changeover switch is in the switch position (not shown in FIG. 2).
  • the earphone 9 is connected to the other stereo channel R, a potentiometer 17 being switched on in the return line, which can be adjusted simultaneously with the potentiometer 16 by the setting controller 11, so that the volume of both stereo channels L , R is set for the headphones 7 at the same time.
  • the lines for both stereo channels L, R are first routed into the housing 18 of the loudspeaker 1, which is indicated by dashed lines, and a connecting line 19 to the housing 20 of the loudspeaker 2 is laid out of the housing 18 of the loudspeaker 1.
  • the branches to the ear loudspeakers 8, 9 of the headphones 7 are located in the housing 18 of the loudspeaker 1, as are all the contacts of the switch 15.
  • the circuit variant shown in FIG. 3 differs only in the contacting of the potentiometers 16, 17, which do not — as in FIG. 2 — between headphones 7 and
  • Switch 15 but are now positioned between switch 15 and car radio 12, so that the switch 15 acts only as an off switch for the speakers 1, 2. This has the consequence that the lines leading to the connection socket 5 are not interrupted by the switch 15.
  • potentiometers 16, 17 also influence the volume of the reproduction through the loudspeakers 1, 2.
  • a line for one stereo channel L is led to the housing 18 of the loudspeaker 1 and a line for the other stereo channel R is led to the housing 20 of the loudspeaker 2, so that a normal routing on both sides of the car leads to the Speakers 1, 2 is made.
  • a line for the stereo channel R is interrupted and, with two wires of a connecting line 19 ', leads to two contacts which are provided for switching the loudspeaker 2 in the switch 15. Accordingly, the speaker 2 is switched by the switch 15 effective or ineffective ".
  • the speaker 2 is rendered ineffective so that a conductor of the connecting line 19 'becomes ineffective, while the other wire with the potentiometer 17.
  • the center tap of the potentiometer 17 is connected to the return line from the ear speaker 9, the other end of which is connected via a third wire the connecting line 19 'is connected to the other wire of the stereo channel R led to the housing 20 for the loudspeaker 2.
  • the potentiometers 16, 17 are switched as in FIG. 2, so they only serve to control the volume for playback via the headphones 7.
  • FIG. 5 shows an embodiment variant of the wiring and wiring according to FIG. 4, that is to say with a three-wire connecting line 19 ′ between the housings 18 and 20, in which, however, the potentiometers 16, 17 are connected as in FIG. 3, so that the potentiometers 16 , 17 the volume of speakers 1, 2 is adjustable.
  • FIG. 6 shows an embodiment variant of the invention in which both loudspeakers 1, 2 are equipped with connection sockets 5 for headphone plugs 6 and each with a setting regulator 11.
  • stereo loudspeakers should be possible on the loudspeakers 1, 2 via both loudspeakers 7, 7 '.
  • Figure 7 shows an embodiment for a corresponding
  • the stereo channels L, R are routed separately to the associated housing 18, 20 of the loudspeakers 1, 2.
  • the switches 15, 15 ' are connected in series with respect to the two stereo channels L, R, so that pressing one of the switches 15, 15' causes both speakers 1, 2 to be muted.
  • the ear loudspeakers 8, 9 or 8 ', 9' connected to a non-switched wire of the stereo channel L, R are with their return lines directly to the relevant return line of the stereo channel L via the associated potentiometer 16, 17 or 16 ', 17' or R performed.
  • the switches 15, 15 ' are in the circuit variant according to FIG. 7 as in the embodiment examples. play according to Figures 3 and 5 connected as a switch for the speakers 1, 2.
  • the potentiometers 16, 17 and 16 ', 17' are unnecessary if a separate volume control is to be dispensed with.
  • dashed bridging lines above the potentiometers 16, 17, 16 ', 17' the circuit design is indicated, which changes when the potentiometers 16, 17; 16 ', 17' results.
  • FIG. 7 shows that the connecting line 19 ′′ existing between the housings 18, 20 has a five-wire design in this case.
  • FIG. 8 A minimal embodiment of the invention is indicated in FIG. 8.
  • the loudspeakers 1, 2 here have both connection sockets 5, via which, however, only the associated channel of the loudspeaker 1, 2 can be removed, so that both ear loudspeakers 8, 9 are guided with flexible cables 10 to the associated loudspeaker 1, 2 there to tap the signal for the stereo channel L, R in question.
  • the loudspeaker trims 3 are not provided with adjustment controls 11.
  • FIG. 9 shows a wiring of the arrangement according to FIG. 8.
  • the two stereo channels L, R are routed in a conventional manner to the housings 18, 20 of the loudspeakers 1, 2.
  • each housing there is a switch 15, 15 ', which in this exemplary embodiment is, however, only equipped with three contacts for the stereo channel L, R associated with the associated loudspeaker 1, 2.
  • the wiring of the switches 15, 15 ' is shown as a switch in solid lines. Alternatively, as shown in dashed lines, the switch 15, 15 'can also be switched as an off switch for the loudspeaker 1, 2.
  • the two loudspeakers 1, 2 can be supplied with mono signals via the channels L, R, so that the connection of mono headphones or earphones is possible and sensible on both loudspeakers 1, 2.
  • wireless headphone systems can also be used to implement the invention if the necessary power supply is provided for the receiver connected to the loudspeaker 1, 2. This can be ensured by a battery-operated receiver or by laying a power supply to the headphone connection of the loudspeaker 1, 2.
  • FIGS. 10 and 11 show the embodiment variants according to FIGS. 2 and 3 " , the return line being drawn from the base of the potentiometers 16, 17 to the other connection of the loudspeaker 1, 2 without reference to ground is.
  • FIGS. 4 to 9 Corresponding modifications are also possible for the other exemplary embodiments according to FIGS. 4 to 9.
  • the illustrated exemplary embodiments show that numerous design variants are possible within the scope of the invention, the preferred design variant in the individual case being expediently determined by the circumstances in the individual case for the laying of the cables and the possibility of a suitable connection 19, 19 ', 19''between the housings 18, 20 of the two loudspeakers 1, 2 can be determined.

Landscapes

  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Health & Medical Sciences (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Stereophonic System (AREA)
  • Headphones And Earphones (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

L'invention concerne un système d'autoradio comportant un autoradio (12) et au moins deux haut-parleurs (1, 2) connectés audit autoradio (12). Ce système autoradio peut être utilisé seulement par une partie des occupants du véhicule sans que les autres soient dérangés, par le fait qu'au moins un des haut-parleurs (1, 2) est pourvu d'une prise (5), permettant le raccordement d'une fiche d'écouteur (6), et d'un commutateur (15, 15') au moyen duquel la reproduction par l'intermédiaire des haut-parleurs (1, 2) peut être coupée.
EP98928089A 1997-09-24 1998-03-28 Systeme d'autoradio Expired - Lifetime EP1018288B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19742087 1997-09-24
DE19742087A DE19742087A1 (de) 1997-09-24 1997-09-24 Autoradioanlage
PCT/DE1998/000901 WO1999016286A1 (fr) 1997-09-24 1998-03-28 Systeme d'autoradio

Publications (2)

Publication Number Publication Date
EP1018288A1 true EP1018288A1 (fr) 2000-07-12
EP1018288B1 EP1018288B1 (fr) 2002-07-03

Family

ID=7843438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928089A Expired - Lifetime EP1018288B1 (fr) 1997-09-24 1998-03-28 Systeme d'autoradio

Country Status (6)

Country Link
US (1) US6567655B1 (fr)
EP (1) EP1018288B1 (fr)
JP (1) JP2001517917A (fr)
DE (2) DE19742087A1 (fr)
ES (1) ES2180178T3 (fr)
WO (1) WO1999016286A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010044329A1 (en) * 2000-05-17 2001-11-22 Gil Newsom Handsfree cellular phone in neckroll enclosure
WO2002012022A1 (fr) * 2000-08-07 2002-02-14 Mitsubishi Denki Kabushiki Kaisha Systeme audiovisuel utilise dans un vehicule automobile
US20030063756A1 (en) * 2001-09-28 2003-04-03 Johnson Controls Technology Company Vehicle communication system
JP3989712B2 (ja) * 2001-11-20 2007-10-10 アルパイン株式会社 車載用音響システム
JP2004118939A (ja) * 2002-09-26 2004-04-15 Clarion Co Ltd 音響装置
JP3880523B2 (ja) * 2002-09-27 2007-02-14 クラリオン株式会社 車載用再生装置
ATE336875T1 (de) * 2003-02-20 2006-09-15 Sony Ericsson Mobile Comm Ab Elektronischer treiber zum leiten eines audiosignals zu wahlweise einem von zwei lautsprechern
FR2859316A1 (fr) * 2003-08-29 2005-03-04 Sigismond Sliwinski Dispositif pour l'ecoute des sons emis par les appareils equipes de haut-parleurs ou enceintes et d'une prise casque
US7599498B2 (en) * 2004-07-09 2009-10-06 Emersys Co., Ltd Apparatus and method for producing 3D sound
DE102007016284A1 (de) * 2007-04-04 2008-10-16 Giga-Byte Technology Co., Ltd., Hsin-Tien Tonausgabevorrichtung mit Ohrhörerbetriebsart und Lautsprecherbetriebsart
JP5040528B2 (ja) * 2007-08-28 2012-10-03 ソニー株式会社 オーディオ信号送信装置、オーディオ信号受信装置及びオーディオ信号伝送方法
JP5192901B2 (ja) * 2007-10-29 2013-05-08 株式会社オーディオテクニカ ノイズキャンセルヘッドホン
CN102457798A (zh) * 2010-10-18 2012-05-16 鸿富锦精密工业（深圳）有限公司 音频切换电路及具有该音频切换电路的音频播放装置
DE102011106030B9 (de) * 2011-06-30 2016-08-11 Austriamicrosystems Ag Detektionsschaltung und Detektionsverfahren
EP2894874A1 (fr) * 2014-01-14 2015-07-15 Pentac Limited Casque d'écoute

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US4324951A (en) * 1980-04-28 1982-04-13 Brown Bruce J Acoustic coupling system
DE3126117A1 (de) 1981-07-02 1983-01-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim Autoradio - kassettengeraet
JPS61102827A (ja) 1984-10-25 1986-05-21 Matsushita Electric Ind Co Ltd ラジオ受信機の出力切換回路
US4706273A (en) * 1985-11-14 1987-11-10 Anthony P. Palett Cellular telephone
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Also Published As

Publication number Publication date
DE19742087A1 (de) 1999-03-25
ES2180178T3 (es) 2003-02-01
JP2001517917A (ja) 2001-10-09
DE59804689D1 (de) 2002-08-08
WO1999016286A1 (fr) 1999-04-01
EP1018288B1 (fr) 2002-07-03
US6567655B1 (en) 2003-05-20

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