WO2002089452A1 - Schaltungsanordnung zur audiowiedergabe und zum freisprechen in einem kraftfahrzeug - Google Patents
Schaltungsanordnung zur audiowiedergabe und zum freisprechen in einem kraftfahrzeug Download PDFInfo
- Publication number
- WO2002089452A1 WO2002089452A1 PCT/EP2002/004053 EP0204053W WO02089452A1 WO 2002089452 A1 WO2002089452 A1 WO 2002089452A1 EP 0204053 W EP0204053 W EP 0204053W WO 02089452 A1 WO02089452 A1 WO 02089452A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- program
- signal processing
- processing device
- spu
- hands
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
- H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
- H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
- H04M1/6091—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system including a wireless interface
Definitions
- the invention relates to a circuit arrangement for audio reproduction and for hands-free talking in a motor vehicle.
- the object of the invention is to provide a circuit arrangement which is suitable for audio reproduction and for hands-free calling and which requires less effort.
- the advantage of the invention is that both the circuit complexity is greatly reduced and the hands-free quality is improved, an existing signal processing device being used and having more computing power than the signal processing devices used in the mobile radio devices.
- a circuit arrangement for audio reproduction and hands-free talking in a motor vehicle with at least one first electroacoustic converter for converting electrical signals into acoustic signals and a second electroacoustic converter for converting acoustic signals into electrical signals.
- a program-controlled signal processing device coupled to the transducers is provided for processing signals supplied to it, which then directly or indirectly controls the first electroacoustic transducer (s).
- a program for audio playback and a program for handsfree talking are stored in a program memory, the handsfree operation program for handsfree operation and the audio playback program for audio playback operations being loaded into and executed by the signal processing device.
- the signal processing device has a device for automatic noise-dependent signal optimization, which evaluates the noise in the interior and accordingly influences at least the volume of an audio signal provided for transmission and supplied to the signal processing device in audio playback mode.
- devices of this type for automatic noise-dependent signal optimization for example by means of a microphone, the acoustic monitoring signal composed of the acoustic useful signal and the acoustic noise signal in the vehicle interior is picked up and, for example, broken down into these two components. These are then evaluated in comparison to the original electrical audio signal and a manipulated variable is used, for example, for the
- the second transducer for example a microphone
- the second transducer provided for hands-free operation is preferably used in audio playback mode for noise detection in the interior.
- a single second converter for example a microphone
- the second converter which in hands-free mode essentially serves to record the voice signals from the operator and in audio playback mode records the noise inside the vehicle.
- a significantly better microphone can be used for two microphones at the same cost as before, or the costs can be significantly reduced (for example, halved) with the same converter quality.
- At least one first converter (for example, speaker) intended for audio playback operation can also be used for hands-free operation.
- the quality increases compared to the known systems are considerable, and the costs are also reduced compared to the previous systems.
- a mobile telephone device (permanently installed or portable) is preferably connected to the audio playback device.
- the connection between the telephone device and signal processing device can be made, for example, via a MOST bus and / or an optical ring.
- a MOST bus in connection with an optical ring is often used, for example, to connect audio signal sources to a signal processing device, so that a corresponding extension by a mobile telephone device can be carried out with little effort and also ensures a high degree of compatibility.
- the telephone device can generate a handset off-hook signal (fork signal) and send it to the signal transmission transfer facility.
- the handset pick-up signal occurs, the program for hands-free calling is loaded and executed, while the program for audio reproduction is otherwise loaded into and executed by the signal processing device.
- the handset off-hook signal is an indicator of whether the phone is currently on the phone or should be on the phone, whereby the music is expediently switched off during the phone call in order to ensure the best possible voice transmission. This means that when the handset is picked up or a comparable action (pressing a corresponding key), the audio playback program is stopped, the hands-free program is loaded and then carried out continuously as long as the handset lift signal is generated, i. H. as long as the phone is on the phone ("the handset is off hook").
- the hands-free program is terminated, the audio playback program is loaded and then performed continuously. Since, as already mentioned, telephoning and listening to music, for example, should not take place at the same time, the signal processing device can be optimally utilized by being active in both operating cases with the appropriate program control.
- the telephone device generates a bell signal and transmits it to the signal processing device, the audio playback program being interrupted when the bell signal occurs and, for example, continued after the bell, unless the handset is lifted.
- a signal processor is preferably used within the signal processing device, since this offers a maximum of flexibility.
- the respective program is then loaded into the program memory (for example RAM) from the program memory (for example ROM).
- the advantage here is that the signal processor provided for audio signal processing, which is generally very powerful, is also available for hands-free operation and thus offers a much higher quality than is the case when using the signal processors used in conventional mobile radio devices.
- a signal processing device SPU is provided.
- a microphone MIC is connected as an electroacoustic converter for converting acoustic signals into electrical signals.
- two loudspeakers LSL, LSR are connected to the signal processing device SPU as electroacoustic transducers for converting electrical signals into acoustic signals.
- the signal processing device SPU contains, among other things, an analog-to-digital converter ADC, a digital signal processor DSP, two digital-to-analog converters DAC1, DAC2, two power amplifiers AMPL, AMPR, a non-volatile memory ROM and an interface BUS.
- the digital signal processor DSP with the interposition of the analog-digital converter ADC, receives the signal of the MIC supplied to a suitable location.
- the microphone is positioned in such a way that it allows good recording of the interior noise and, on the other hand, has a satisfactory voice recording in the area of the driver's position.
- the digital signal processor DSP in turn supplies the two loudspeakers LSL and LSR with the interposition of one of the digital-to-analog converters DAC1, DAC2 and the power amplifier AMPL, AMPR.
- the digital signal processor DSP is also connected to the non-volatile memory ROM via an address bus and a data bus AB, DB.
- the interface MOST is finally via a control line CL with the non-volatile memory RM and with the digital signal processor DSP via a ring signal line RS which is individually designed or combined to form a bus, a handset lifting signal line HS (fork signal line), and at least one audio signal line AS Coupled transmission of audio signals.
- the interface MOST is in turn connected externally via a bus line BUS to a mobile radio unit MCOM, for example a CD player and a radio receiver CUN.
- An optical ring can be used as the bus line BUS, for example.
- the mobile radio unit MCOM, the CD player CDP and the radio receiver part TUN can be set up separately or together with the signal processing device SPU.
- the digital signal processor DSP includes a volatile one
- Selection unit determines which program is required, loads it from the non-volatile memory ROM into the volatile memory RAM and then starts the respectively loaded program ,
- either a hands-free program HFM or an audio playback program AUN is used in conjunction with a program for dynamic sound optimization DSO.
- the control by the selection device SU is carried out in such a way that the audio playback program AUM is normally operated with or without the program for dynamic sound optimization DSO. If the ring signal RS occurs, the audio playback program AUM is interrupted and, for example, a ring tone is output via the loudspeakers LSL and LSR. If the handset is now not picked up, the digital signal processor DSP returns to the audio playback program HUM after ringing has ended.
- the audio playback program AUM is ended, the hands-free program HFM is loaded from the non-volatile memory ROM into the volatile memory RAM and the hands-free program HFM is started.
- the microphone MIC which is usually used for dynamic sound optimization (DSO)
- DSO dynamic sound optimization
- the two loudspeakers LFL, LFR which are usually used for audio reproduction, are used as monitor speakers. Any of the usual methods can be used as a program for dynamic sound optimization, as are known, for example, from US Pat. No. 5,434,922, US Pat. No. 5,615,270, GB 2 248 001, EP 0 319 777, EP 0 141 129 etc.
- the hands-free program can be based on any hands-free method, as are known for example from US 4,912,758, US 4,965,822, US4, 982,427, 5,054,061. Filter routines, compression routines and damping routines etc. are used in particular for audio signal reproduction.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/476,169 US8666087B2 (en) | 2001-04-26 | 2002-04-11 | Integrated audio/communication system for use in a motor vehicle |
EP02740464A EP1382185B1 (de) | 2001-04-26 | 2002-04-11 | Schaltungsanordnung zur audiowiedergabe und zum freisprechen in einem kraftfahrzeug |
DE50210508T DE50210508D1 (de) | 2001-04-26 | 2002-04-11 | Schaltungsanordnung zur audiowiedergabe und zum freisprechen in einem kraftfahrzeug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10120525.2 | 2001-04-26 | ||
DE10120525A DE10120525A1 (de) | 2001-04-26 | 2001-04-26 | Schaltungsanordnung zur Audiowiedergabe und zum Freisprechen in einem Kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002089452A1 true WO2002089452A1 (de) | 2002-11-07 |
Family
ID=7682849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/004053 WO2002089452A1 (de) | 2001-04-26 | 2002-04-11 | Schaltungsanordnung zur audiowiedergabe und zum freisprechen in einem kraftfahrzeug |
Country Status (4)
Country | Link |
---|---|
US (1) | US8666087B2 (de) |
EP (1) | EP1382185B1 (de) |
DE (2) | DE10120525A1 (de) |
WO (1) | WO2002089452A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4167533B2 (ja) * | 2003-04-16 | 2008-10-15 | Necインフロンティア株式会社 | 通話システム |
DE10318683A1 (de) * | 2003-04-24 | 2004-11-18 | Roland Roth | Ton- und/oder Bildwiedergabegerät und Verwendung eines abnehmbaren Bedienpanels |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0141129A2 (de) | 1983-09-22 | 1985-05-15 | Blaupunkt-Werke GmbH | Verfahren zum Anpassen der Lautstärke eines Lautsprechers an einen am Lautsprecherort herrschenden Störgeräuschpegel |
EP0319777A2 (de) | 1987-12-05 | 1989-06-14 | Blaupunkt-Werke GmbH | Verfahren und Schaltungsanordnung zur selbsttätigen störgeräuschabhängigen Lautstärkeregelung |
US4912758A (en) | 1988-10-26 | 1990-03-27 | International Business Machines Corporation | Full-duplex digital speakerphone |
US4965822A (en) | 1989-04-10 | 1990-10-23 | Videotelecom Corp. | Full duplex speakerphone |
US4982427A (en) | 1988-09-16 | 1991-01-01 | Sgs Thomson Microelectronics S.A. | Integrated circuit for telephone set with signal envelope detector |
US5054061A (en) | 1988-02-18 | 1991-10-01 | Nec Corporation | Hands-free telephone |
GB2248001A (en) | 1990-09-11 | 1992-03-18 | Concourse Communications Ltd | Controlling sound volume in dependence on ambient noise |
US5434922A (en) | 1993-04-08 | 1995-07-18 | Miller; Thomas E. | Method and apparatus for dynamic sound optimization |
DE19619815A1 (de) * | 1996-05-17 | 1997-11-20 | Bosch Gmbh Robert | Rundfunkempfänger mit integrierter Fernsprecheinrichtung |
WO1999003198A1 (de) * | 1997-07-09 | 1999-01-21 | Siemens Aktiengesellschaft | Verfahren und steuereinrichtung zur steuerung der lautstärke eines lautsprecherelementes, freisprecheinrichtung und kraftfahrzeugeinbauvorrichtung |
EP1047249A1 (de) * | 1999-04-20 | 2000-10-25 | Sagem S.A. | Laut-Fernsprechsystem und Verfahren zum Freisprechgebrauch eines Mobiltelefons |
DE19939631A1 (de) * | 1999-08-20 | 2001-02-22 | Nokia Mobile Phones Ltd | Multimediaeinheit |
DE19946344A1 (de) * | 1999-09-28 | 2001-03-29 | Bosch Gmbh Robert | Verfahren zur Wiedergabe eines Audio-Signals eines Mobiltelefons mit einem Autoradio und Autoradio mit einer Freisprecheinrichtung für ein Mobiltelefon |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4061874A (en) * | 1976-06-03 | 1977-12-06 | Fricke J P | System for reproducing sound information |
DE3426068A1 (de) * | 1983-09-22 | 1985-04-11 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Verfahren zum anpassen der lautstaerke eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel |
US6370254B1 (en) * | 1990-09-11 | 2002-04-09 | Concourse Communications Limited | Audio-visual reproduction |
IT1264128B1 (it) * | 1993-04-09 | 1996-09-16 | Carmelo Luzzio | Dispositivo vivavoce particolarmente utilizzabile per telefoni cellulari per autoveicoli |
DE19651308C2 (de) * | 1996-12-10 | 1998-10-22 | Becker Gmbh | Audio-Soundsystem für ein Kraftfahrzeug |
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 |
US6349223B1 (en) * | 1999-03-08 | 2002-02-19 | E. Lead Electronic Co., Ltd. | Universal hand-free system for cellular phones in combination with vehicle's audio stereo system |
DE19933067C2 (de) | 1999-07-15 | 2001-11-15 | Am3 Automotive Multimedia Ag | Fahrzeugkommunikationsanlage |
DE19934863A1 (de) | 1999-07-24 | 2001-02-08 | Bosch Gmbh Robert | Adapterkarte, Kommunikationsvorrichtung, Audioanlage und Sprechfunkgerät |
DE19935238C2 (de) * | 1999-07-28 | 2002-06-13 | Daimler Chrysler Ag | Fahrzeug-Audiosystem |
DE29922999U1 (de) | 1999-12-30 | 2000-07-27 | Vivanco GmbH, 22926 Ahrensburg | Freisprecheinrichtung für ein Telefon |
-
2001
- 2001-04-26 DE DE10120525A patent/DE10120525A1/de not_active Ceased
-
2002
- 2002-04-11 DE DE50210508T patent/DE50210508D1/de not_active Expired - Lifetime
- 2002-04-11 EP EP02740464A patent/EP1382185B1/de not_active Expired - Lifetime
- 2002-04-11 WO PCT/EP2002/004053 patent/WO2002089452A1/de active IP Right Grant
- 2002-04-11 US US10/476,169 patent/US8666087B2/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0141129A2 (de) | 1983-09-22 | 1985-05-15 | Blaupunkt-Werke GmbH | Verfahren zum Anpassen der Lautstärke eines Lautsprechers an einen am Lautsprecherort herrschenden Störgeräuschpegel |
EP0319777A2 (de) | 1987-12-05 | 1989-06-14 | Blaupunkt-Werke GmbH | Verfahren und Schaltungsanordnung zur selbsttätigen störgeräuschabhängigen Lautstärkeregelung |
US5054061A (en) | 1988-02-18 | 1991-10-01 | Nec Corporation | Hands-free telephone |
US4982427A (en) | 1988-09-16 | 1991-01-01 | Sgs Thomson Microelectronics S.A. | Integrated circuit for telephone set with signal envelope detector |
US4912758A (en) | 1988-10-26 | 1990-03-27 | International Business Machines Corporation | Full-duplex digital speakerphone |
US4965822A (en) | 1989-04-10 | 1990-10-23 | Videotelecom Corp. | Full duplex speakerphone |
GB2248001A (en) | 1990-09-11 | 1992-03-18 | Concourse Communications Ltd | Controlling sound volume in dependence on ambient noise |
US5434922A (en) | 1993-04-08 | 1995-07-18 | Miller; Thomas E. | Method and apparatus for dynamic sound optimization |
US5615270A (en) | 1993-04-08 | 1997-03-25 | International Jensen Incorporated | Method and apparatus for dynamic sound optimization |
DE19619815A1 (de) * | 1996-05-17 | 1997-11-20 | Bosch Gmbh Robert | Rundfunkempfänger mit integrierter Fernsprecheinrichtung |
WO1999003198A1 (de) * | 1997-07-09 | 1999-01-21 | Siemens Aktiengesellschaft | Verfahren und steuereinrichtung zur steuerung der lautstärke eines lautsprecherelementes, freisprecheinrichtung und kraftfahrzeugeinbauvorrichtung |
EP1047249A1 (de) * | 1999-04-20 | 2000-10-25 | Sagem S.A. | Laut-Fernsprechsystem und Verfahren zum Freisprechgebrauch eines Mobiltelefons |
DE19939631A1 (de) * | 1999-08-20 | 2001-02-22 | Nokia Mobile Phones Ltd | Multimediaeinheit |
DE19946344A1 (de) * | 1999-09-28 | 2001-03-29 | Bosch Gmbh Robert | Verfahren zur Wiedergabe eines Audio-Signals eines Mobiltelefons mit einem Autoradio und Autoradio mit einer Freisprecheinrichtung für ein Mobiltelefon |
Also Published As
Publication number | Publication date |
---|---|
EP1382185B1 (de) | 2007-07-18 |
DE10120525A1 (de) | 2002-11-07 |
EP1382185A1 (de) | 2004-01-21 |
US20040165733A1 (en) | 2004-08-26 |
US8666087B2 (en) | 2014-03-04 |
DE50210508D1 (de) | 2007-08-30 |
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