EP0896497A2 - Sistème de reproduction de son - Google Patents

Sistème de reproduction de son Download PDF

Info

Publication number
EP0896497A2
EP0896497A2 EP98113748A EP98113748A EP0896497A2 EP 0896497 A2 EP0896497 A2 EP 0896497A2 EP 98113748 A EP98113748 A EP 98113748A EP 98113748 A EP98113748 A EP 98113748A EP 0896497 A2 EP0896497 A2 EP 0896497A2
Authority
EP
European Patent Office
Prior art keywords
membrane
volume
sound
housing
arrangement
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
EP98113748A
Other languages
German (de)
English (en)
Other versions
EP0896497A3 (fr
EP0896497B1 (fr
Inventor
Bernhard Puls
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.)
Harman Becker Automotive Systems GmbH
Original Assignee
Nokia Technology GmbH
Harman Audio Electronic Systems 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 Nokia Technology GmbH, Harman Audio Electronic Systems GmbH filed Critical Nokia Technology GmbH
Publication of EP0896497A2 publication Critical patent/EP0896497A2/fr
Publication of EP0896497A3 publication Critical patent/EP0896497A3/fr
Application granted granted Critical
Publication of EP0896497B1 publication Critical patent/EP0896497B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the invention relates to a sound reproduction arrangement, in particular one for Play low-frequency tones.
  • electroacoustic sound signals Play converters Such converters have as main components Membrane, a drive arrangement and fasteners for the mutual connection of Diaphragm and drive arrangement.
  • Drive arrangements for such a membrane predominantly formed by a magnet system, which has a permanent magnet and a yoke (also called inference part).
  • the membrane is provided with a voice coil and plunges into an air gap left in the magnet system. If the two ends of the Voice coil connected to a sound signal source, the voice coil moves in the Air gap of the magnet system, so that the membrane connected to the voice coil vibrating air volumes on the respective surfaces of the membrane be transferred.
  • the first basic form which is also referred to as a closed housing, stands out characterized in that the housing, with the exception of the converter opening, in which a converter is mounted, has no other opening.
  • this works in the housing enclosed and connected with the back of the membrane air volume as additional spring, which increases the resonant frequency of the transducer and thus the lower one Cutoff frequency is shifted to higher frequencies.
  • the included one may Air volume, which is also called damping volume, does not have a minimum value fall below.
  • the housing at least one Must have a wall facing the listening room that is suitable for its dimensions, to accommodate the mostly large-sized bass converter in the opening. With consideration on the space or area requirements of such arrangements are these arrangements Applications fail even with limited space (such as in a motor vehicle) enable good bass reproduction.
  • Bass reflex boxes which form the second basic shape, are based on the principle of the first Basic form on. Deviating from this principle, bass reflex boxes have another one Opening in the housing from which the sound waves emitted backwards by the membrane emerge in phase with the sound waves emitted from the front of the membrane and support their impact.
  • Transducers and housings provide bass reflex arrangements two coupled systems.
  • the bass reflex housing is a resonator, the the volume of the case and the size and depth of the additional opening dependent resonance frequency on the natural frequency of the built-in bass converter is coordinated. As a result, coupling vibrations occur.
  • Tones in the Close to the natural resonance of the built-in transducer the gas volume in (in Resonating) housing for particularly strong resonance.
  • the one here Low coupling frequency that occurs causes basses from one in one closed housing can only be weakly illuminated transducers, become more audible.
  • bass reflex arrangements Even if in the case of bass reflex arrangements compared to closed housing arrangements Sound pressure frequency response is not as linear, have bass reflex arrangements compared to that closed housing arrangements the advantage that they have a smaller size deliver higher efficiency at low frequencies. But also bass reflex arrangements like closed housing arrangements have the general disadvantage that the transducers in a wall of the (bass reflex) housing must be used, with which a variety of possible uses for these arrangements (especially those with less Space).
  • bandpass arrangement which also form the third basic form.
  • Bandpass arrangements are characterized by the fact that a closed housing by a partition in two Chambers is divided. The bass converter is inserted into this partition.
  • the simplest design has bandpass arrangements in one of the two chambers Bass reflex opening that is solely responsible for the sound radiation.
  • bandpass arrangements it is characteristic of the bandpass arrangements that the open - because with the bass reflex opening provided - volume a volume of space which, depending on the training between about 0.4 and 0.8 of the room volume of the - for this consideration - closed Volume required. Provided that the corresponding volumes are provided, the The shape of the various chambers is largely arbitrary. If you take further into account that bandpass arrangements only require walls that have something for the sound exit are larger than the cross section of the bass reflex opening, and that i. ü. such orders Allow acceptable bass reproduction from a total volume of around 10 - 12 liters suitable for this arrangement also for applications in which only a very limited Space is available.
  • bass reflex arrangements are based on reductions in the total volume react sensitively to a large number of bandpass arrangements in accordance with the spatial changes must be kept available.
  • the invention is therefore based on the object of providing a sound reproduction arrangement Reproduction of low-frequency tones indicate which space is available can also be used very flexibly in the event of changes to this space and beyond only requires a sound radiation opening to the listening room, the cross-sectional area of which is smaller than that of the membrane.
  • the arrangement according to the invention works directly on the acoustic Mass, which is provided by or from the sound guide channels, because the Displacement volume because of its small size does not act as a housing volume.
  • the arrangement according to the invention has one of the closed boxes Similar equivalent circuit diagram, but with the difference that in the system according to the invention to the blind component loudspeaker not the resilience of the housing, but only that acoustic mass of the sound guide channel or channels is added.
  • the acoustic mass of the sound guide channels together with the moving mass of the Loudspeaker forms a resulting mass that is greater than the acoustic mass of the Speaker.
  • the result is that only one resonance frequency occurs because there are only two Dummy components are present and that this (new) resonance frequency is lower than that Is the resonance frequency of a free-standing speaker.
  • the displacement volume mentioned several times in the application is the volume of a converter must be provided so that the (first) membrane on one side under Move the maximum stroke within the structural conditions of the speaker cage can without the risk that the vibrating parts of the transducer not "strike” vibrating parts of the transducer.
  • (First) membrane around a cone membrane of the type shown in DE-Gbm 9109452 so the displacement volume, which on the surface facing away from the magnet system Membrane is present, essentially from the effective membrane diameter and the Volume between the top of the membrane and the top of the transducer educated.
  • the inventive arrangement is directly based on that of the acoustic mass provided or the sound guide channels should work the reduction of the factor given in the above formula with 0.06 for realization of these relationships.
  • a particularly good bass reproduction is given if, according to claim 3, the length of the sound guide channel (s) ⁇ ⁇ . / 8 of the desired upper limit frequency.
  • a further membrane and with an axial distance to the first Arranged membrane and the drive assembly that drives the other membrane is a very compact arrangement for sound reproduction with separate Area transducers created, in which the influence of the other membrane on the Otherwise, sound radiation from the first membrane thanks to the sound guide channels known coaxial arrangements, which a further membrane and a magnet system in Having the bell of the first membrane is unaffected.
  • a further closed damping volume is present and will be this damping volume of walls of a housing and the further membrane formed, the further membrane for the reproduction of medium or medium-high frequencies Tone signals are used without thereby reducing the total space requirement of an arrangement is enlarged according to claims 1 to 4.
  • Overheating of the drive arrangement is excluded according to claim 7 if Wall surfaces of the drive system via the sound guide channels with the gas volume of the listening room is in exchange.
  • each membrane forms together with their magnet system driving them a transducer of the one shown in DE-Gbm 9109452 Art.
  • each of the two transducers according to the invention largely out standardized and for example also in arrangements according to DE-Gbm 9109452 used components can be formed.
  • the extensive elimination of the requirement, To use your own components in the system according to the application also has the other one Advantage that the two converters forming a registration system on production facilities can be prefabricated, for example for the production of Transducers according to DE-Gbm 9109452 can be used.
  • FIG. 1 which also does not illustrate a true-to-scale representation of the actual conditions in the other figures, shows a low-frequency reproduction arrangement 10.
  • This arrangement 10 is essentially formed by an electro-acoustic transducer 11 and a closed housing 12.
  • the essential components of the converter 11 are a basket 13, a drive arrangement 14, a conical membrane 15 and one arranged on a voice coil former 16 Voice coil 17 on The conical membrane 15 is inserted and connected in the basket 13.
  • This connection is realized so that the membrane edge 18, which is the largest Has a radial distance to the loudspeaker center axis, by means of a groove-shaped Bead 19 is connected to the upper edge 20 of the basket 13.
  • the drive arrangement 14 In the present case, it forms a magnet system 21 which has a yoke formed from different parts 22 and a permanent magnet 23 comprises.
  • the lower edge 24 of the membrane 15 is with the Voice coil former 16 connected.
  • the voice coil 17 is immersed in an air gap 25 left in the magnet system 21 on.
  • a centering membrane 26 which the voice coil bobbin 16 connects the basket 13, and a dust protection cap 27, which the voice coil bobbin 16th overstretched, present.
  • the ends of the voice coil 17 become conductive connected to a sound signal source, the membrane 15 depending on the of the sound signal source provided voltages in vibrations axially to the loudspeaker central axis offset (everything not shown in Fig. 1), so that both from the front 28th and the back 29 of the membrane 14 sound waves are emitted.
  • the cross section surrounded by the spacer ring 32 has a cover 33 largely covered.
  • Arrangement 10 regions on both sides of the loudspeaker center axis of the regions shown in FIG. 1 Arrangement 10 is identical. However, this no longer applies to the sound guide channels 34, which extend in the direction of the loudspeaker central axis and which in the lid Connect 33 left openings 35.
  • FIG. 2 also shows, that to the left of the loudspeaker center axis is shown in FIG. 1 Embodiment provided with a circular opening 35 in the lid 33, which is rotationally symmetrical to the loudspeaker center axis.
  • FIG. 3 shows - in the embodiment shown in Figure 1 to the right of the speaker center axis is, the opening 35 and the adjoining sound guide channel 34 is annular educated. If the webs 36 are neglected, which in the embodiment according to FIG Connect the middle part 33 'of the cover 33 to the rest of the cover 33, which corresponds to both 1 the cross-sectional area of the openings 35 essentially the cross-sectional area of the sound guide channels 34.
  • the diaphragm 15 moves during an outward stroke into the so-called (front) displacement volume 37.
  • This displacement volume 37 is used for an outward stroke of the diaphragm 15 between the effective diaphragm diameter resulting from the clear Cross-section of the membrane 15 calculated at the front 28 and 2 ⁇ half the width of the bead 19, the spacer ring 32 and a cover 33 having no opening 35 for this purpose. It is evident in this context that the spacer ring 32 or its height parallel to the loudspeaker central axis has the task of preventing the membrane 15 or the bead 19 from “bumping” on the cover 33.
  • the size of the displacement volume 37 was only about 85 cm 3.
  • the displacement volume 37 set in motion by the vibrations of the membrane 15 then puts the volume resulting from the cross section and the length of the respective sound guide channel 34 in a particularly powerful manner Vibrations, whereby the particularly good bass reproduction is achieved in the listening room 38.
  • FIGS. 1 to 3 An arrangement 10 explained in connection with FIGS. 1 to 3 is also relevant the bass reproduction quality in a wide range versus changes in volume size of the closed damping volume 30 is not critical.
  • FIG. 4 shows a further arrangement 10, which in turn has two embodiments the subject. Unless stated otherwise, the two on the right and left are the Loudspeaker center axis lying embodiments are identical.
  • converter 11 is largely identical to converter 11 according to FIG. 1 identical. The only difference is that the converter 11 with the Front 28 of the membrane 15 "works" on the closed damping volume 30.
  • the closed damping volume 30 is not of its own Housing formed, but provided that the assembly 10 in a built-in housing 39 is used, walls 40 must be provided on the arrangement 10, which the sound waves radiated from the rear side 29 of the membrane 15 from the sound waves separate that are released from the front 28 of the membrane 15.
  • FIG. 4 a second converter 11 'is present in FIG. 4, which essentially those Components that the converter 11 also has. Clarify this pointed out that those components of the transducer 11 'which match the components of the converter 11 are identical in their function, with the respective reference numerals of Converter 11 and an apostrophe are designated.
  • This converter 11 ' which is provided for the reproduction of medium-frequency tones deviating from the converter 11 equipped with two permanent magnets 23 ', which are within the are arranged by the voice coil support 16 'surrounded space. Besides, they are two transducers 11, 11 'centered on the loudspeaker center axis back to back on their Magnet systems 21, 21 'connected together.
  • the converter 11 ' also has Improvement of the reproduction quality over an independent midtone volume, which the forms further closed damping volumes 30 'in the sense of this application.
  • This further closed damping volume 30 ' which via the openings 31' with the Back 29 'of diaphragm 15' communicates in the left of the loudspeaker central axis shown embodiment essentially of the wall 40, the basket 13, the magnet systems 21, 21 'and the basket 13' are formed.
  • Figure 4 Shown sound guide channel 34, which the further closed damping volume 30 ' runs through, only one of several radially arranged to the loudspeaker center axis Sound guide channels 34, the further closed damping volume 30 'is also from limited the sound guide channels 34.
  • the closed damping volume 30 'of the wall 40, another Wall 41, the basket 13 'and the one or more sound guide channels 34 formed pull through the closed damping volume 30 '.
  • the further wall 41 with axial Distance to the basket 13 and the magnet system 21 and thus an intermediate volume 43 is provided, the air volume of which is in contact with the drive arrangement 14 (21, 21 ') stands, this intermediate volume 43 ensures good heat dissipation from the drive arrangement 14 achieved without an elaborate guidance of the or the sound guide channels 34 is necessary.
  • FIG. 5 shows another embodiment of the invention. This embodiment largely corresponds to the embodiments shown in FIG. 4. The difference is, however the sound guide channel 34 is not through the further closed damping volume 30 ' guided, but rather in Figure 5, the sound guide channel 34 connects radially to the closed damping volume 30 'and uses its wall 40. Even if in the embodiments according to FIGS. 4 and 5 such a further converter 11 ' are shown with a conical membrane 15 ', in this other - not shown - Embodiment of the transducer 11 for bass reproduction with a transducer Dome membrane can be combined.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP98113748A 1997-08-07 1998-07-23 Système de reproduction de son Expired - Lifetime EP0896497B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734120A DE19734120A1 (de) 1997-08-07 1997-08-07 Tonwiedergabeanordnung
DE19734120 1997-08-07

Publications (3)

Publication Number Publication Date
EP0896497A2 true EP0896497A2 (fr) 1999-02-10
EP0896497A3 EP0896497A3 (fr) 2003-03-26
EP0896497B1 EP0896497B1 (fr) 2009-10-21

Family

ID=7838207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113748A Expired - Lifetime EP0896497B1 (fr) 1997-08-07 1998-07-23 Système de reproduction de son

Country Status (3)

Country Link
US (1) US6212284B1 (fr)
EP (1) EP0896497B1 (fr)
DE (2) DE19734120A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112425183A (zh) * 2018-07-17 2021-02-26 蓝图声学股份有限公司 用于同轴电声转换器的声滤波器

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2000266815A1 (en) * 1999-08-20 2001-03-19 Fan Zhang Double coils and double magnetic gaps transducer
US7136498B1 (en) 1999-12-16 2006-11-14 Koninklijke Philips Electronics N.V. Loudspeaker having a dual chamber acoustical enclosure with two external vents and one internal vent
US20050099255A1 (en) * 2000-08-18 2005-05-12 Fan Zhang Transducer with dual coil and dual magnetic gap
JP2003102093A (ja) * 2001-09-21 2003-04-04 Citizen Electronics Co Ltd 複合スピーカー
JP3946118B2 (ja) * 2002-10-07 2007-07-18 シチズン電子株式会社 発音体の構造
US7848533B2 (en) * 2006-11-13 2010-12-07 Jason Myles Cobb Loudspeaker
US8009858B2 (en) * 2007-11-28 2011-08-30 Jason Myles Cobb Loudspeaker
US9271098B2 (en) * 2013-10-07 2016-02-23 Incipio Technologies, Inc. Audio speaker with externally reinforced passive radiator attachment
ITUA20163268A1 (it) * 2015-05-22 2017-11-09 Ask Ind Spa Gruppo trasduttore elettro-acustico inerziale.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912865A (en) * 1973-07-13 1975-10-14 American Trading & Prod Loudspeaker arrangement
US4783820A (en) * 1985-01-03 1988-11-08 Lyngdorf Johan P Loudspeaker unit
EP0451885A1 (fr) * 1990-03-13 1991-10-16 Koninklijke Philips Electronics N.V. Appareil audio ou vidéo à haut-parleur encastré
JPH06233367A (ja) * 1993-02-03 1994-08-19 Sony Corp バスレフ型スピーカーシステム
US5629502A (en) * 1994-03-02 1997-05-13 Sony Corporation Speaker apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902343A1 (de) * 1989-01-27 1990-08-02 R & H Studiosound Beck Kg Lautsprecherbox
DE3902434A1 (de) 1989-01-27 1990-08-02 Uhl Sportartikel Karl Stuetzbandagen fuer gliedmassen und/oder gelenke
JPH04336794A (ja) * 1991-05-14 1992-11-24 Mitsubishi Electric Corp 低音再生用スピーカーシステム
JPH05284586A (ja) * 1992-04-01 1993-10-29 Mitsubishi Electric Corp 低音再生用スピーカシステム
EP0669781B1 (fr) * 1992-07-23 2003-08-13 TOZAWA, Katsutoshi Enceinte acoustique
DE29716471U1 (de) * 1997-09-15 1998-07-30 Lien, Kin-Lung, Taipeh/T'ai-pei Versteckbare Klangvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912865A (en) * 1973-07-13 1975-10-14 American Trading & Prod Loudspeaker arrangement
US4783820A (en) * 1985-01-03 1988-11-08 Lyngdorf Johan P Loudspeaker unit
EP0451885A1 (fr) * 1990-03-13 1991-10-16 Koninklijke Philips Electronics N.V. Appareil audio ou vidéo à haut-parleur encastré
JPH06233367A (ja) * 1993-02-03 1994-08-19 Sony Corp バスレフ型スピーカーシステム
US5629502A (en) * 1994-03-02 1997-05-13 Sony Corporation Speaker apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112425183A (zh) * 2018-07-17 2021-02-26 蓝图声学股份有限公司 用于同轴电声转换器的声滤波器
US12010481B2 (en) 2018-07-17 2024-06-11 Blueprint Acoustics Pty Ltd Acoustic filter for a coaxial electro-acoustic transducer

Also Published As

Publication number Publication date
DE19734120A1 (de) 1999-02-18
EP0896497A3 (fr) 2003-03-26
US6212284B1 (en) 2001-04-03
DE59814406D1 (de) 2009-12-03
EP0896497B1 (fr) 2009-10-21

Similar Documents

Publication Publication Date Title
DE69014225T2 (de) Akustischer Rundstrahlgenerator und Lautsprechersystem.
DE3855686T2 (de) Lautsprecher
DE69119376T2 (de) Lautsprechersystem mit mehreren Unterkammern
DE69012911T2 (de) Lautsprechersystem.
DE2755718C2 (de) Abgedichteter Kopfhörer
DE69330567T2 (de) Gerät für rauschkompensation für ein kraftfahrzeug
DE2536439A1 (de) Lautsprechersystem
WO2007134650A1 (fr) Boîte passe-bande dans la structure porteuse d'un véhicule
DE69027144T2 (de) Lautsprechersystem
DE2815051A1 (de) Kopfhoerer in geschlossener bauweise
DE68915829T2 (de) Tonlautsprechersystem.
DE3317518A1 (de) Lautsprecherbox mit integriertem akustischem bandpassfilter
EP0755045A2 (fr) Dispositif de suppression d'ondes sonores
EP0896497B1 (fr) Système de reproduction de son
DE3637910A1 (de) Lautsprechergehaeuse
DE19620010B4 (de) Lautsprechersystem mit Satellitengehäuse
DE69811657T2 (de) Lautsprechersystem
DE10015751B4 (de) Lautsprecherbox
DE102013001866B4 (de) Kraftfahrzeug mit einer Audioeinrichtung
DE4021000C2 (fr)
DE60303748T2 (de) Kombinierte Lautsprechereinheit
EP1142445B1 (fr) Haut-parleur a membrane de graves
EP0692922B1 (fr) Enceinte acoustique pour haut-parleur basse-fréquence
DE3506139C1 (de) Lautsprechersystem für eine qualitativ hochwertige Tonwiedergabe
DE3918654C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HARMAN AUDIO ELECTRONIC SYSTEMS GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7H 04R 1/28 B

Ipc: 7H 04R 9/06 A

17P Request for examination filed

Effective date: 20030303

AKX Designation fees paid

Designated state(s): DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59814406

Country of ref document: DE

Date of ref document: 20091203

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091021

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140717

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170620

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170620

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59814406

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20180722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20180722