DK1874088T3 - Bluetooth transfer device to the hearing instruments and the corresponding transfer method - Google Patents
Bluetooth transfer device to the hearing instruments and the corresponding transfer method Download PDFInfo
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- DK1874088T3 DK1874088T3 DK07108797.7T DK07108797T DK1874088T3 DK 1874088 T3 DK1874088 T3 DK 1874088T3 DK 07108797 T DK07108797 T DK 07108797T DK 1874088 T3 DK1874088 T3 DK 1874088T3
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- 238000012546 transfer Methods 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 50
- 230000001939 inductive effect Effects 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
- H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
- H04R25/558—Remote control, e.g. of amplification, frequency
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Description
Opfindelsen angår en overføringsindretning til overføring af audiodata til et høreapparat med en sendeindretning til sending af audiodata i et Bluetooth-signal, en koder, som er integreret i sendeindretningen til komprimeringen af audiodataene før sendingen, og en relæstation til omformning af Bluetooth-signalerne fra sendeindretningen til et signal til induktiv overføring til høreapparatet. Derudover angår den foreliggende opfindelse en tilsvarende fremgangsmåde til overføring af audiodata til et høreapparat.The invention relates to a transmission device for transmitting audio data to a hearing aid having a transmitting device for transmitting audio data in a Bluetooth signal, an encoder integrated into the transmitting device for the compression of the audio data before the transmission, and a relay station for converting the Bluetooth signals from the transmitting device to a signal for inductive transmission to the hearing aid. In addition, the present invention relates to a similar method for transmitting audio data to a hearing aid.
Der foreligger et voksende behov for at overføre audiodata til tale eller musik fra fjernsynsapparater eller Hi-fi-apparater på trådløs og bredbåndagtig måde til høreapparater. Især skal overføringen også være mulig til et høreapparatsystem med to høreapparater til bineural forsyning.There is a growing need to transfer audio data to speech or music from televisions or Hi-fi devices in a wireless and broadband-like manner to hearing aids. In particular, the transfer should also be possible for a hearing aid system with two hearing aids for bineural supply.
Med henblik på kabelfri audiooverføring til høreapparater anvendes i overvejende grad FM-apparater eller infrarøde apparater. Herved drejer det sig om apparater som påsættes i stedet for et høreapparat, og som tilbydes som påhæftningsmo-dul til høreapparater eller er integreret i et høreapparat under tydelig ekstra pladsbehov.For the purpose of cable-free audio transmission for hearing aids, FM or infrared devices are predominantly used. These are devices that are fitted in place of a hearing aid and which are offered as a hearing aid module for hearing aids or are integrated into a hearing aid under clearly extra space requirements.
Til audiooverføringen kommer der i princippet flere elektromagnetiske overføringsmåder i betragtning. Således kan der f.eks. anvendes højfrekvens-fjernfelt-overføringssystemer og induktive nærfeltoverføringssystemer. Ved hjælp af et digitalt, induktivt overføringssystem kan der under plads- og strømbesparende korte afstande (mindre end 1 til 2 m) slås bro over til høreapparatet. Til audiooverføringen fra fjernsynsapparater eller Hi-fi-anlæg benyttes der dog et fjernfeltover-føingssystem til større afstande (rækkevidde ca. 10 m) med henblik på en meningsfuld drift.In principle, several electromagnetic transfer modes are considered for the audio transmission. Thus, e.g. high-frequency, far-field transmission systems and inductive near-field transmission systems are used. A digital, inductive transmission system allows bridges to the hearing aid during space and power saving short distances (less than 1 to 2 m). For the audio transmission from television sets or Hi-fi systems, however, a long-range distance transmission system (range about 10 m) is used for meaningful operation.
Fra efterfølgende tilgængeliggjort patentansøgning DE 10 2005 005 603.2 kendes en dataoverføringsindretning til trådfri dataoverføring til et høreapparat, og som indebærer en højfrekvens-modtageindretning til modtagelsen af et højfrekvent moduleret signal fra en ekstern sendeenhed. En blandeindretning tjener til at blande det højfrekvente modulerede signal med et referencesignal med lignende høj frekvens, således at der kan fremstilles et moduleret udgangssignal, hvis bærefrekvens er mindst en størrelsesorden mindre, og som egner sig til den induktive overføring. Endelig overføres udgangssignalet induktivt til høreapparatet ved hjælp af en sendeindretning. Denne omsætningsfremgangsmåde resulterer i en minimal forsinkelsestid over hele radiostrækningen, da der fuldstændigt gives afkald på en demodulation og en dekodning samt en fornyet modulation og kodning. Ulempen ved denne overføring er dog, at den totale radiostrækning skal opbygges individuelt, da dataraten i højfrekvensoverføringsafsnittet skal tilpasses dataraten i afsnittet med induktiv overføring.From subsequent published patent application DE 10 2005 005 603.2, a data transmission device for wireless data transmission to a hearing aid is known, and which comprises a high frequency receiving device for receiving a high frequency modulated signal from an external transmitting unit. A mixing device serves to mix the high frequency modulated signal with a reference signal of similar high frequency so that a modulated output signal whose carrier frequency is at least an order of magnitude smaller and suitable for the inductive transmission can be produced. Finally, the output signal is inductively transmitted to the hearing aid by means of a transmitting device. This method of conversion results in a minimal delay time over the entire radio stretch, as a complete demodulation and decoding as well as a renewed modulation and coding are completely waived. However, the disadvantage of this transmission is that the total radio stretch must be built individually, since the data rate in the high frequency transmission section must be adjusted to the data rate in the inductive transmission section.
Fra US 2006/0039577 A1 kendes en fremgangsmåde og et apparat til trådløs kommunikation i forbindelse med et høreapparat ved hjælp af et induktivt interface. Kommunikationen sker fra et eksternt apparat ved hjælp af Bluetooth til en relæstation og derfra ved hjælp af induktiv overføring til høreapparatet.From US 2006/0039577 A1, a method and apparatus for wireless communication in connection with a hearing aid is known by means of an inductive interface. Communication is done from an external device using Bluetooth to a relay station and from there by inductive transfer to the hearing aid.
Derudover beskriver artiklen Bluetooth Audio Video Working Group: ’’Advanced Audio Distribution Profile Specification - Adopted version 1.0”, 22. maj 2003 (2005-05-22), side 1-75, XP002632596 fundet på Internettet: URL:http://www7.informatik.uni-erlangen.de/~dulz/fkom/06/Material/6/Blue-tooth/ A2DPspecv10.pdf (fundet den 4. november 2011) en audiocodec ifølge A2DP-version 1.0 af Bluetooth. Ud over codec-typen SBC nævnes der også her MPeg-1 og MPeg-2. Derudover nævntes for SBC aftastningsraten fra 16 til 48 kHz.In addition, the article describes the Bluetooth Audio Video Working Group: "Advanced Audio Distribution Profile Specification - Adopted Version 1.0", May 22, 2003 (2005-05-22), pages 1-75, XP002632596 found on the Internet: URL: http: // www7.informatik.uni-erlangen.de/~dulz/fkom/06/Material/6/Blue-tooth/ A2DPspecv10.pdf (found on November 4, 2011) an audio codec according to A2DP version 1.0 of Bluetooth. In addition to the codec type SBC, MPeg-1 and MPeg-2 are also mentioned here. In addition, for the SBC the sampling rate was mentioned from 16 to 48 kHz.
Formålet med opfindelsen består i at foreslå en overføringsindretning og en tilsvarende overføringsfremgangsmåde, som indebærer lavere udviklingsomkostninger.The object of the invention is to propose a transfer device and a corresponding transfer method which entails lower development costs.
Dette opnås ved hjælp af en overføringsindretning ifølge krav 1. I overensstemmelse hermed foreslås der ifølge opfindelsen en fremgangsmåde ifølge krav 5. På fordelagtig måde kan der gås tilbage til standardiserede komponenter, såsom Bluetooth-sender og Bluetooth-modtager, samt den tilsvarende Bluetoothoverfø-ringsprotokol. BT-overføringssystemets standardiserede komponenter tilpasses audioanvendelser (f.eks. fejlbeskyttelse.This is achieved by a transmission device according to claim 1. Accordingly, according to the invention, a method according to claim 5. Advantageously, standardized components such as Bluetooth transmitter and Bluetooth receiver can be reverted, and the corresponding Bluetooth transmission protocol. . The BT transmission system's standard components are adapted to audio applications (for example, error protection).
Den opfindelsesmæssige overføring af data kan eventuelt foregå bidirektionelt. Således kan der også overføres data fra høreapparatet via den delvis standardiserede overføringsstrækning til et eksternt apparat.The inventive transfer of data may optionally be bidirectional. Thus, data from the hearing aid can also be transmitted via the partially standardized transmission line to an external device.
Fortrinsvis er relæstationen integreret i høreapparatets eller høreapparaternes fjernbetjening eller også f.eks. i fjernsynsfjernbetjeningen. Derved skal brugeren ikke benytte et ekstraapparat til den trådløse dataoverføring. Audiobåndbredden efter komprimeringen ved hjælp af koderen er mindre end 15 kHz og ligger på mere gunstig måde imellem 8 og 12 kHz. Derved bliver audiodatastrømmen allerede på sendesiden således komprimeret, at der ikke ankommer nogen ikke-for-arbejdbare informationer i høreapparatet.Preferably, the relay station is integrated into the remote control of the hearing aid or hearing aids or also e.g. in the television remote control. Thereby, the user does not need to use an additional device for the wireless data transfer. The audio bandwidth after compression using the encoder is less than 15 kHz and is more favorable between 8 and 12 kHz. In this way, the audio data stream is already compressed on the transmitter side so that no non-processed information arrives in the hearing aid.
Derudover ligger dataraten i Bluetooth-signalet under 150 kBit/s. Herved skal der ikke foregå nogen speciel komprimering til den induktive overføring i basisbåndet.In addition, the data rate in the Bluetooth signal is below 150 kBit / s. Thereby no special compression for the inductive transmission in the baseband.
Opfindelsen beskrives nu nærmere under henvisning til tegningen, hvor figur 1 viser et overføringssystem med en relæstation til dekodning og fornyet kodning, og figur 2 et overføringssystem ifølge opfindelsen med en relæstation uden nykodning.The invention will now be described in more detail with reference to the drawing, in which Figure 1 shows a transmission system with a relay station for decoding and re-encoding, and Figure 2 a transmission system according to the invention with a relay station without new coding.
Det i det følgende nærmere beskrevne udførelseseksempel udgør en foretrukken udførelsesform for den foreliggende opfindelse. Til bedre forståelse af opfindelsen beskrives først et overføringssystem ifølge den kendte teknik, som i figur 1 er gengivet skematisk. I overensstemmelse med det i figur 1 viste system skal et stereo-audiosignal 1 overføres fra et fjernsynsapparat eller et Hi-fi-anlæg til et høreapparat eller et høreapparatsystem til bineural forsyning. Audiosignalerne aftastes og kodes i en Bluetooth-sender 3. Ved denne kodning bliver dataene komprimeret og blokvis sammenfattet. Bluetooth-senderen 3 understøtter flere standard-koder, hvoraf en koder 4 valgfrit kan anvendes til overføringen. På Bluetooth-A2DP-typisk måde aftastes audiosignalet 1 med 44,1 eller 48 kHz, således at der fås en audiobånd-bredde på 20 til 24 kHz til det sendte signal. Dataraten r_bt udgør typisk 230 til 350 kBit/s. Standard-Bluetooth-overføringsstrækningen 5 muliggør en trådløs kommunikation med en rækkevidde på op til ca. 10 m. I en fjernbetjening 6 er der anbragt en standard-Bluetooth-modtager med en passende Bluetooth-dekoder 7 til at dekode de audiodata, som er kodet på Blue-tooth-overføringsstrækningen 5. Til den efterfølgende induktive overføring til høreapparatsystemet 2 skal dataraten reduceres til værdien r_hg. Derfor er der i fjernbetjeningen 6 tilvejebragt en høreapparatkoder 8, som reducerer dataraten tilsvarende og leverer en audiobåndbredde på fra 8 til 10 kHz. Således kodet sendes dataene via den induktive overføringsstrækning 9 til høreapparatsystemet 2. Hvert høreapparat i høreapparatsystemet 2 har en passende høreapparatdekoder 10, 11.The embodiment described below is a preferred embodiment of the present invention. For a better understanding of the invention, there is first described a prior art transfer system, which is shown schematically in Figure 1. In accordance with the system shown in Figure 1, a stereo audio signal 1 must be transmitted from a television set or Hi-fi system to a hearing aid or a hearing aid system for bineural supply. The audio signals are scanned and encoded in a Bluetooth transmitter 3. By this encoding, the data is compressed and summarized in blocks. The Bluetooth transmitter 3 supports several standard codes, of which a coder 4 can optionally be used for transmission. In Bluetooth-A2DP-typical fashion, the audio signal 1 is scanned at 44.1 or 48 kHz, so as to provide an audio bandwidth of 20 to 24 kHz to the transmitted signal. The data rate r_bt is typically 230 to 350 kBit / s. The standard Bluetooth transfer line 5 enables wireless communication with a range of up to approx. In a remote control 6, a standard Bluetooth receiver with a suitable Bluetooth decoder 7 is arranged to decode the audio data encoded on the Blue-tooth transmission line 5. For the subsequent inductive transfer to the hearing aid system 2, the data rate must be is reduced to the value r_hg. Therefore, in the remote control 6, a hearing aid encoder 8 is provided which reduces the data rate accordingly and provides an audio bandwidth of from 8 to 10 kHz. Thus encoded, the data is transmitted via the inductive transmission line 9 to the hearing aid system 2. Each hearing aid in the hearing aid system 2 has a suitable hearing aid decoder 10, 11.
Den større afstand fra et fjernsynsapparat eller et Hi-fi-anlæg til høreapparat kan der således dannes bro over ved anvendelsen af en standard-overføringsfremgangsmåde til en høreapparatfjernbetjening med minimalt besvær og minimale omkostninger. Som standardoverføringsfremgangsmåde anvendes Bluetooth-fremgangsmåden, som udgør den mest udbredte standard til trådløs stereo-audio-overføring i et hus. Den ’’sidste meter” fra fjernbetjeningen til høreapparatet dannes der til sidst bro over på induktiv måde.Thus, the greater distance from a television set or a Hi-fi system to a hearing aid can be bridged by the use of a standard transfer method for a hearing aid remote control with minimal hassle and minimal cost. As the standard transmission method, the Bluetooth method is used, which is the most widely used standard for wireless stereo audio transmission in a house. The '' last meter '' from the remote to the hearing aid is eventually bridged in an inductive way.
Mere konkret bliver audiosignalet digitaliseret i Bluetooth-sendestationen 3 og overført ved hjælp af den standardiserede audiooverføringsprotokol A2DP til relæstationen, nemlig fjernbetjeningen 6. Denne standardprotokol foreskriver understøtningen af en licensfri codec, nemlig SBC. Derudover kan der også anvendes andre bestemte codecs, f.eks. MP3, som dog ikke egner sig til TV-brugen (på grund af den høje algoritmiske forsinkelse). Derudover åbner standarden mulighed for defineringen/anvendelsen af en producentafhængig codec.More specifically, the audio signal is digitized in the Bluetooth transmitting station 3 and transmitted by means of the standard A2DP audio transmission protocol, the remote control 6. This standard protocol prescribes the support of a license-free codec, namely SBC. In addition, other specific codecs, e.g. MP3, however, which is not suitable for TV use (due to the high algorithmic delay). In addition, the standard allows for the definition / use of a manufacturer-dependent codec.
Som allerede nævnt ovenfor overføres der på Bluetooth-strækningen 5 standardmæssigt sammenlignelige høje datamængder. Ved SBC udgør dataraten r_bt = 230 til 350 kBit/s. Overføringen til høreapparaterne skal dog foregå med så vidt muligt små komponenter og så vidt muligt strømbesparende. Derfor er der her valgt den induktive overføringsstrækning 9, ved hvilken dog dataoverføringsraten skal reduceres for at øge effektiviteten og muliggøre tilsvarende strømbesparelse. Datareduktionen sker ved omkodning af Bluetooth-A2DP-datastrømmen i relæstationen eller fjernbetjeningen 6 til en høreapparatdatastrøm.As already mentioned above, on the Bluetooth route 5 standard high data volumes are transmitted by default. For SBC, the data rate is r_bt = 230 to 350 kBit / s. However, the transmission to the hearing aids must be carried out with as little components as possible and as far as possible saving energy. Therefore, here the inductive transfer distance 9 is selected, at which, however, the data transfer rate must be reduced to increase efficiency and enable corresponding power saving. The data reduction occurs by recoding the Bluetooth A2DP data stream in the relay station or remote control 6 into a hearing aid data stream.
Den i figur 1 afbillede løsning til den trådløse radiooverføringsstrækning har dog nogle ulemper. For det første er den standardmæssige Bluetooth-dataoverføring med høj båndbredde ineffektiv til brugen med et høreapparat. Grunden hertil ligger i, at høreapparatet på grund af forskellige kvalitetskrav normalt anvendes med lavere audiobåndbredde (ca. 8 til 10 kHz) end audioanvendelser til normalt hørende (større end 20 kHz). Derudover fører omkodningen i relæstationen til en reduceret audiokvalitet og frembringer et forøget strømforbrug, hvorved relæstationens brugstid reduceres. En yderligere ulempe består i, at talens og musikkens forsinkelsestid fra fjernsynsapparatet til høreapparatet på grund af den dobbelte kodningsforsinkelse (lange audioblokke på Bluetooth-strækningen) og fjernbetjeningens forarbejdningsforsinkelser øges. Dette vurderes for så vidt kritisk, da der til audiooverføringen fra fjernsynet til høreapparatet skal sikres en synkronitet til billederne, og der ved hjælp af overlejringen af direkte lyd fra fjernsynet med overført audiosignal kommer til en uønsket farvning eller gråning i forbindelse med musik eller talesignal.However, the solution depicted in Figure 1 for the wireless radio transmission line has some drawbacks. First, the standard high-bandwidth Bluetooth data transmission is inefficient for use with a hearing aid. The reason for this is that, due to various quality requirements, the hearing aid is usually used with lower audio bandwidth (about 8 to 10 kHz) than normal audio applications (greater than 20 kHz). In addition, the coding in the relay station leads to a reduced audio quality and produces an increased power consumption, thereby reducing the relay station's useful life. A further disadvantage is that the delay time of speech and music from the television to the hearing aid is increased due to the double coding delay (long audio blocks on the Bluetooth section) and the processing delays of the remote control. This is considered to be critical, as the audio transmission from the television to the hearing aid must ensure a synchronicity to the images, and by means of the overlay of the direct audio from the television with the transmitted audio signal, an undesirable staining or graying occurs in connection with music or voice signal.
Ifølge opfindelsen anvendes derfor det i figur 2 principielt viste system. I en sendestation 13 overføres TV- eller Hi-fi-signalet 1 ved hjælp af en høreapparatkoder 14 til et ønsket høreapparatformat. Dette udmærker sig ved audiobåndbredder på fra 8 til 10 kHz. Derudover bliver signalet ved hjælp af høreapparatkoderen 18 således kodet, at der fremkommer en til den tilsluttende induktive overføringsstrækning egnet datarate r_hg. Denne realiseres ved hjælp af en passende bloklængde i forbindelse med datablokkene. Høreapparatkoderen 14 med hvilken stereosignalet efter en digitalisering kom-primeres med høreapparataftastningsrate fungerer som standardkonform alternativ i A2DP-anvendelsen af Bluetooth til SBC-koderen. SBC’en kan ligeledes understøttes i senderen, men anvendes dog ikke til høreapparatanvendelsen. Den resterende del af den fysiske overføring per A2DP-protokol af Bluetooth kan indsættes uændret til Bluetooth-overføringsstrækningen 15. I fjernbetjeningen 16 modtages Bluetooth-datastrømmen i høreapparatformatet med en standard-Bluetooth-modtager og kan uden omkodning eller digital aftast-ningsrateomformning videreføres til en induktiv sender i fjernbetjeningen 16. Bluetooth-modtageren og den induktive sender er derfor symboliseret i figur 2 som en bypass 17. Den resterende dataoverføringsstrækning, nemlig den induktive overføringsstrækning 9 samt høreapparatsystemet 2 med høreapparatkoderen 10 og 11 svarer til dem, der er anvendt i figur 1. Ved den totale overføring ifølge figur 2 svarer således nyttedataraten og taktraten på Bluetooth-stræknin-gen 15 til den på den induktive overføringsstrækning 9, dvs. r_bt = r_hg. På grund af anvendelsen af Bluetooth-standarden kan størstedelen af overføringsstrækningen til høreapparatbæreren realiseres på enkel og udviklingsmæssigt let måde og med lave omkostninger. Den ’’sidste meter” til høreapparatet sker ved hjælp af den induktive strækning 9 særligt energibesparende. Flytningen af høreapparatkoderen og aftastningen af høreapparattakten til Bluetooth-sende-stationen 13 indebærer følgende fordele: a) Effektiviteten i standardstationen og i fjernbetjeningen kan øges. Blue-tooth-overføringen per A2DP-protokol kan nemlig gennemføres med tydeligt lavere datarate end i standardanvendelsen med SBC. Derved sinkes strømforbruget i sende- og relæstationen. Derudover bortfalder den dyre omkodning i fjernbetjeningen, hvilket fører til yderligere strømbesparelse. Derfor kan der især ved relæstationen opnås en længere batteribrugstid eller en sjældnere udskiftning af batterier. b) Da både Bluetooth-codec (kodning/dekodning) og også høreapparat-co-dec udgør tabsbehæftede transformationer, stiger audiokvaliteten af det totale signal, da der i systemet ifølge opfindelsen og ifølge figur 2 kun skal kodes/dekodes en gang. c) Et vigtigt kvalitetstræk ved det totale system er audiosignalets forsinkelse som følge af overføringen. For det første overlejres i TV-anvendelsen den direkte lyd fra fjernsynsapparatet med det per radio overførte signal i høreapparatbærerens øre og fører til generende farvning eller rungning. For det andet skal billedets synkronitet med tonen være sikret. Med fremgangsmåden ifølge opfindelsen minimeres forsinkelsestiden ved eliminering af en kodningsforsinkelse og en forarbejdningsforsinkelse i fjernbetjeningen.According to the invention, therefore, the system shown in Figure 2 is used in principle. In a transmitting station 13, the TV or Hi-Fi signal 1 is transmitted by means of a hearing aid encoder 14 to a desired hearing aid format. This is distinguished by audio bandwidths of 8 to 10 kHz. In addition, the signal is coded by means of the hearing aid encoder 18 so that a data rate r_hg suitable for the inductive transmission line is obtained. This is realized by means of an appropriate block length associated with the data blocks. The hearing aid encoder 14 with which the stereo signal is compressed with a hearing aid scanning rate after a digitization serves as the standard conforming alternative in the A2DP application of Bluetooth to the SBC encoder. The SBC can also be supported in the transmitter but is not used for hearing aid use. The remainder of the physical transmission per Bluetooth A2DP protocol can be inserted unchanged to the Bluetooth transmission line 15. In the remote control 16, the Bluetooth data stream is received in the hearing aid format with a standard Bluetooth receiver and can be transmitted without a decoding or digital scan rate conversion. The Bluetooth receiver and the inductive transmitter are therefore symbolized in Figure 2 as a bypass 17. The remaining data transmission distance, namely the inductive transmission distance 9 and the hearing aid system 2 with the hearing aid encoder 10 and 11 are similar to those used in Figure Thus, for the total transmission of Figure 2, the utility data and the rate of the Bluetooth route 15 correspond to that of the inductive transmission line 9, ie. r_bt = r_hg. Due to the application of the Bluetooth standard, most of the transmission distance to the hearing aid carrier can be realized in a simple and developmentally easy way and at low cost. The '' last meter '' of the hearing aid is made particularly energy-efficient by means of the inductive section 9. Moving the hearing aid encoder and scanning the hearing aid rate to the Bluetooth transmitting station 13 has the following advantages: a) The efficiency of the standard station and the remote control can be increased. The blue-tooth transmission per A2DP protocol can be done at a significantly lower data rate than in the standard application with SBC. This reduces the power consumption in the transmitting and relay station. In addition, the expensive decoding in the remote control lapses, leading to additional power savings. Therefore, especially at the relay station, a longer battery life or less frequent replacement of batteries can be achieved. b) Since both the Bluetooth codec (encoding / decoding) and also the hearing aid co-dec constitute loss-making transformations, the audio quality of the total signal increases, since in the system according to the invention and according to figure 2 only one has to be coded / decoded once. c) An important quality feature of the total system is the delay of the audio signal as a result of the transmission. First, in the TV application, the direct sound of the television set is overlaid with the radio transmitted signal in the ear of the hearing aid carrier and leads to annoying staining or echoing. Secondly, the synchrony of the image with the tone must be ensured. With the method of the invention, the delay time is minimized by eliminating a coding delay and a processing delay in the remote control.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006029196A DE102006029196B4 (en) | 2006-06-26 | 2006-06-26 | Bluetooth transmission device for hearing aids and corresponding transmission method |
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| Publication Number | Publication Date |
|---|---|
| DK1874088T3 true DK1874088T3 (en) | 2015-10-12 |
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| DK07108797.7T DK1874088T3 (en) | 2006-06-26 | 2007-05-24 | Bluetooth transfer device to the hearing instruments and the corresponding transfer method |
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| EP (1) | EP1874088B1 (en) |
| JP (1) | JP4749390B2 (en) |
| CN (1) | CN101098168B (en) |
| AU (1) | AU2007202880B2 (en) |
| DE (1) | DE102006029196B4 (en) |
| DK (1) | DK1874088T3 (en) |
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| CN101217038B (en) * | 2008-01-17 | 2011-06-22 | 中兴通讯股份有限公司 | An encoding method of audio data SBC algorithm and Bluetooth stereo subsystem |
| DE102008019107A1 (en) | 2008-04-16 | 2009-10-29 | Siemens Medical Instruments Pte. Ltd. | Measuring device for measuring input and output characteristics of hearing device, has measuring chamber for holding hearing device, where high-frequency transmission module is provided for transmitting measuring signal |
| DE102008050351A1 (en) | 2008-10-02 | 2010-04-08 | Siemens Medical Instruments Pte. Ltd. | System for transmitting audio data to hearing aid, has transmitter unit for emitting radio signal with audio data, where delay unit is provided for delaying audio data released by acoustic waves by predetermined delay value |
| WO2010109745A1 (en) * | 2009-03-24 | 2010-09-30 | パナソニック株式会社 | Sound and image reproduction system, hearing aid, and sound and image processing device |
| DE102014204557A1 (en) * | 2014-03-12 | 2015-09-17 | Siemens Medical Instruments Pte. Ltd. | Transmission of a wind-reduced signal with reduced latency |
| CN106792466B (en) * | 2016-12-26 | 2020-10-09 | 歌尔科技有限公司 | Method for communication between equipment end and host end |
| CN108271144B (en) * | 2018-03-23 | 2023-12-19 | 杜宁 | Bluetooth device and system for carrying out data bidirectional mutual transmission with terminal |
| CN108738006B (en) * | 2018-05-31 | 2021-06-25 | 出门问问信息科技有限公司 | Data transmission method and device based on Bluetooth |
| CN108966197A (en) * | 2018-08-20 | 2018-12-07 | 南昌黑鲨科技有限公司 | Audio frequency transmission method, system, audio-frequence player device and computer readable storage medium based on bluetooth |
| CN111050306A (en) * | 2018-10-15 | 2020-04-21 | 北京轩辕联科技有限公司 | Extended connection method and extended connection system for Bluetooth device |
| JP2024146519A (en) | 2023-03-31 | 2024-10-15 | ソニーグループ株式会社 | Information processing system, hearing device and information processing device |
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| US6208740B1 (en) * | 1997-02-28 | 2001-03-27 | Karl Grever | Stereophonic magnetic induction sound system |
| US6690657B1 (en) * | 2000-02-25 | 2004-02-10 | Berkeley Concept Research Corporation | Multichannel distributed wireless repeater network |
| AT411950B (en) * | 2001-04-27 | 2004-07-26 | Ribic Gmbh Dr | METHOD FOR CONTROLLING A HEARING AID |
| US7519985B2 (en) * | 2001-07-30 | 2009-04-14 | Sony Corporation | Radio communication system, radio communication control apparatus, radio communication control method, recording medium, and computer program |
| FR2829650B1 (en) * | 2001-09-13 | 2004-07-09 | Cit Alcatel | INTER-NETWORK GATEWAY FOR DIGITAL SIGNAL TRANSMISSION |
| US20030114103A1 (en) * | 2001-12-19 | 2003-06-19 | Radio Frequency Systems, Inc. | Repeater for use in a wireless communication system |
| DE10200796A1 (en) * | 2002-01-11 | 2003-07-31 | Reinhard Dagefoerde | Accessory for hearing aid is short-range data radio receiver, especially Bluetooth receiver, whose output can be connected to audio connection of hearing aid |
| JP3754423B2 (en) * | 2003-03-11 | 2006-03-15 | 株式会社東芝 | Electronic equipment and programs |
| GB0406091D0 (en) * | 2004-03-17 | 2004-04-21 | Koninkl Philips Electronics Nv | Radio repeater |
| EP1782657A1 (en) | 2004-08-18 | 2007-05-09 | Micro Ear Technology, Inc. | Method and apparatus for wireless communication using an inductive interface |
| DE102005005603A1 (en) * | 2005-02-07 | 2006-08-17 | Siemens Audiologische Technik Gmbh | Data transmission device for wireless data transmission for hearing aids and corresponding method |
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2006
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2007
- 2007-05-24 DK DK07108797.7T patent/DK1874088T3/en active
- 2007-05-24 EP EP07108797.7A patent/EP1874088B1/en active Active
- 2007-06-21 AU AU2007202880A patent/AU2007202880B2/en not_active Ceased
- 2007-06-21 JP JP2007163876A patent/JP4749390B2/en active Active
- 2007-06-26 CN CN2007101262745A patent/CN101098168B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006029196A1 (en) | 2007-12-27 |
| CN101098168B (en) | 2012-10-24 |
| CN101098168A (en) | 2008-01-02 |
| EP1874088A2 (en) | 2008-01-02 |
| EP1874088B1 (en) | 2015-07-08 |
| EP1874088A3 (en) | 2011-05-25 |
| JP2008011527A (en) | 2008-01-17 |
| AU2007202880B2 (en) | 2009-07-23 |
| AU2007202880A1 (en) | 2008-01-17 |
| DE102006029196B4 (en) | 2009-12-10 |
| JP4749390B2 (en) | 2011-08-17 |
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