DK176303B1 - Programmable hearing aid with programming adapter - Google Patents

Programmable hearing aid with programming adapter Download PDF

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Publication number
DK176303B1
DK176303B1 DK199501410A DK141095A DK176303B1 DK 176303 B1 DK176303 B1 DK 176303B1 DK 199501410 A DK199501410 A DK 199501410A DK 141095 A DK141095 A DK 141095A DK 176303 B1 DK176303 B1 DK 176303B1
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DK
Denmark
Prior art keywords
programming
hearing aid
adapter
battery compartment
battery
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DK199501410A
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Danish (da)
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DK141095A (en
Inventor
Wolfram Meyer
Raimund Martin
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Siemens Audiologische Technik
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Publication of DK141095A publication Critical patent/DK141095A/en
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Publication of DK176303B1 publication Critical patent/DK176303B1/en

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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
    • H04R25/556—External connectors, e.g. plugs or modules

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Casings For Electric Apparatus (AREA)

Description

- i - DK 176303 B1- i - DK 176303 B1

Opfindelsen angår et programmerbart høreapparat med et høreapparathus, med en elektronisk forstærkerenhed i signalbanen fra en mikrofon til en lydgiver, med en batteri-rumsafdækning, som skal åbnes, samt et batteri-rum til opbevaring af et batteri til den elektriske energiforsyning og med en elek-s trisk programmeringstilslutning, som står i elektrisk ledningsforbindelse med forstærkerenheden.The invention relates to a programmable hearing aid with a hearing aid housing, with an electronic amplifier unit in the signal path from a microphone to a sound emitter, with a battery compartment cover to be opened, and a battery compartment for storing an electric power supply battery and with an electric -s tric programming connection, which is in electrical wiring with the amplifier unit.

Ved et kendt høreapparat af denne type (CH-A-669 296) er der i batteri-rummet ved siden af batterikontakterne anbragt yderligere elektriske kontakter, som står i elektrisk ledningsforbindelse med høreapparatets forstær-io kerenhed og tjener til programmering af dette. Til signaloverføring fra en ekstern programmeringsenhed til et lager i høreapparatets forstærkerkredsløb benyttes batteri-rummet ved åbnet batteri-rum og ved udtaget batteri som stik-bøsning for et elektrisk stik til den midlertidige tilslutning af den eksterne programmeringsenhed. EP-B-0 341 902 beskriver et lignende programmerbart is høreapparat, ved hvilket programmeringsklemmen ligeledes er anbragt i batterikamret, ved hvilket programmeringskredsløbet er koblet sammen med batteriklemmerne, og ved hvilket batterikamret og programmeringsklemmen er anbragt stillingsmæssigt således, at programmeringsklemmen kun kan benyttes, når batteriet er fjernet fra batterikamret. Ved de to kendte løsninger sker 20 energiforsyningen af høreapparatet under signaloverføringen ved hjælp af en ekstern spændingskilde. De kendte programmerbare høreapparater har kabelstik som programmeringsadapter, der kan indsættes i det tomme batteri-rum.In a known hearing aid of this type (CH-A-669 296), additional electrical contacts are provided in the battery compartment adjacent to the battery contacts, which are in electrical conduction with the hearing aid amplifier unit and serve to program it. For signal transmission from an external programming unit to a store in the amplifier circuit of the hearing aid, the battery compartment is used with the open battery compartment and with the removed battery as the socket for an electrical plug for the temporary connection of the external programming unit. EP-B-0 341 902 discloses a similar programmable ice hearing aid in which the programming terminal is also arranged in the battery chamber, in which the programming circuit is coupled to the battery terminals, and in which the battery chamber and the programming terminal are positioned in such a way that the programming terminal can only be used when the battery is removed from the battery compartment. In the two known solutions, the energy supply of the hearing aid during signal transmission is effected by means of an external voltage source. The known programmable hearing aids have cable connectors as a programming adapter that can be inserted into the empty battery compartment.

Fra det tyske brugsmønsterskrift DE-U-88 00 629.8 kendes der et elektrisk høreapparat, som har et programmerbart kredsløb, som kan tilsluttes til en 2s ekstern datagenereringsenhed til forsyning med indstillingsdata. Hertil har det kendte høreapparat en bøsningsdel med elektriske stikbøsninger, som er ledende forbundet med et kredsløbskort i programmeringskredsløbet og kan tilsluttes til den eksterne datagenereringsenhed med en stikdels passende elektriske stikben.From German usage pattern DE-U-88 00 629.8 there is known an electric hearing aid which has a programmable circuit which can be connected to a 2s external data generation unit for supplying setting data. To this end, the known hearing aid has a socket member with electrical sockets which are conductively connected to a circuit board in the programming circuit and can be connected to the external data generation unit with a suitable electrical socket.

3o Ved små høreapparater, især ved høreapparater, som i stor udstrækning bæres i øregangen, findes der ingen plads til ekstra programmeringsbøsninger eller til stikbøsninger til optagelse af programmeringsstik. Det er opfindelsens opgave at foreslå et programmerbart høreapparat af den indledningsvis nævnte type, hvis programmering er løst enkelt og pladsbesparende.3o For small hearing aids, especially for hearing aids that are largely worn in the ear canal, there is no room for extra programming connectors or for connectors for recording programming connectors. It is the object of the invention to propose a programmable hearing aid of the type mentioned initially whose programming is solved simply and saves space.

3s Ved høreapparatet ifølge opfindelsen er det til dette formål foreslået, at forstærkerenhedens kontakter danner programmeringstilslutningen, og at en programmeringsadapter til signaloverføringen kan oprette kontakt med pro - 2 - DK 176303 B1 grammeringstilslutningens kontakter igennem en spalte, som er dannet mellem den åbnede batteri-rumsafdækning og høreapparathuset, uden at programmeringsadapteren derved tangerer det med batteriet monterede batteri-rum.3s For this purpose, the hearing aid of the invention proposes that the amplifier unit contacts form the programming connection and that a programming adapter for signal transmission can make contact with the pro- 2 - DK 176303 B1 grammar connection contacts through a gap formed between the opened battery compartment cover. and the hearing aid housing, without the programming adapter tapping the battery-mounted battery compartment.

5 Løsningen ifølge opfindelsen har den fordel, at den klarer sig uden en ekstra programmeringsbøsning, som skal anbringes på høreapparathuset, at den yderligere muliggør en signaloverføring uden udtagning af høreapparatbatteriet - altså ved aktivt høreapparat -, og at den er dannet med enkle og små komponenter til programmeringstilslutningen af forstærkerenheden på den ω ene side og til en programmeringsadapter på den anden side.The solution according to the invention has the advantage of being able to operate without an additional programming sleeve, which must be placed on the hearing aid housing, that it further enables a signal transmission without removing the hearing aid battery - ie by active hearing aid - and that it is formed with simple and small components. to the programming connection of the amplifier unit on one side and to a programming adapter on the other side.

Det er især fordelagtigt ved opfindelsen, hvis kontaktoprettelsen mellem kontakterne på forstærkerenhedens programmeringstilslutning og programmeringsadapterens kontakttråde eller ledere i en kabelforbindelse med en ekstern programmeringsenhed til signaloverføringen understøttes af den helt is eller delvist lukkede batteri-rumsafdækning.It is particularly advantageous in the invention if the contact creation between the contacts on the programming unit of the amplifier unit and the programming wires of the programming adapter or wires in a cable connection with an external programming unit for signal transmission is supported by the fully ice or partially closed battery compartment cover.

Hensigtsmæssige udførelser af opfindelsen fremgår af ejendommelighederne i patentkravene 2-8.Appropriate embodiments of the invention are apparent from the features of claims 2-8.

Yderligere fordele og enkeltheder ved opfindelsen fremgår også af den efterfølgende beskrivelse af et udførelseseksempel ved hjælp af tegningerne, æ På tegningen viser fig. 1 i skematisk gengivelse et i øret bærbart høreapparat ifølge opfindelsen, med det egentlige høreapparat og en programmeringsadapter, ved lukket batteri-rum, 25 fig. 2 et høreapparat med programmeringsadapter, hvorved batteri-rummet er tegnet åbnet, fig. 3 en programmeringsadapter, med et bredbånds- og et -rundkabel-afsnit samt med en stikbøsning til tilslutning af en ikke tegnet, ekstern programmeringsenhed eller ao et audiometer.Further advantages and details of the invention will also be apparent from the following description of an exemplary embodiment by means of the drawings. 1 is a schematic representation of an in-ear portable hearing aid according to the invention, with the actual hearing aid and a programming adapter, in closed battery compartment; 2 shows a hearing aid with a programming adapter, whereby the battery compartment is opened, FIG. 3 shows a programming adapter, with a broadband and a circular cable section, and with a plug socket for connecting an unsigned external programming unit or an audio meter.

I høreapparatets 1 høreapparathus 2 er der bl.a. anbragt en mikrofon 4 og en lydgiver 5, hvorved der i signalvejen fra mikrofonen til lydgiveren er anbragt en elektronisk forstærkerenhed 3, som i en i og for sig kendt udførelse 35 omfatter et forstærkerkredsløb med programmerbart lager. Til lydindgangen til mikrofonen 4 findes der i høreapparathusets 2 face-plate 25 en lydindgangs-åbning 26. Mikrofonens elektriske signaler føres via elektriske ledere 28 til - 3 - DK 176303 B1 forstærkerenheden 3, som i udførelseseksemplet har et printkort 15 med kontaktbaner 14. De i forstærkerenheden 3 behandlede signaler kommer via elektriske ledere 29 til lydgiveren 5. Signalerne, som i lydgiveren 5 er omdannet til lydsignaler, kommer til den hørehandicappedes trommehinde via en lydud-5 gangskanal 27,In the hearing aid 1 of the hearing aid 1 there are a.k.a. a microphone 4 and a sound transducer 5 are provided, whereby in the signal path from the microphone to the sound transducer, an electronic amplifier unit 3 is included, which in a known embodiment 35 comprises a programmable memory amplifier circuit. To the audio input to the microphone 4, there is a sound input opening 26 in the face plate 25 of the hearing aid housing 2 of the microphone's electrical signals via electrical conductors 28 to the amplifier unit 3, which in the embodiment has a circuit board 15 with contact paths 14. The signals processed in amplifier unit 3 via electrical conductors 29 to sound transducer 5. The signals which are converted into sound signals in sound transducer 5 reach the eardrum of the hearing impaired via a sound output channel 27,

Et udskifteligt batteri 8 eller en opladelig akkumulator tjener til den elektriske energiforsyning af den elektroniske forstærkerenhed 3 og de elektriske komponenter, fx. mikrofon 4 og lydgiver 5, hvorved batteriet 8 kan sættes ind i et batteri-rum 7. Batteri-rummet 7 er anbragt svingbart på høreapparathuset 2 io omkring en aksel 20, således at en husåbning 22 eksempelvis kan lukkes i face-platen 25 med en batteri-rumsafdækning 6.An interchangeable battery 8 or a rechargeable accumulator serves the electrical power supply of the electronic amplifier unit 3 and the electrical components, e.g. microphone 4 and sound emitter 5, whereby the battery 8 can be inserted into a battery compartment 7. The battery compartment 7 is pivotally mounted on the hearing aid housing 210 about a shaft 20, so that a housing opening 22 can be closed, for example, in the face plate 25 with a battery compartment cover 6.

Høreapparatet har en programmeringstilslutning til signaloverføringen fra en ekstern enhed, en programmeringsenhed, et audiometer eller fra en anden databehandlingsenhed til mindst ét datalager i forstærkerenheden eller is også til udlæsning af i høreapparatet lagrede data. I en hensigtsmæssig udførelse består denne programmeringstilslutning i forstærkerenheden 3 eksempelvis af tre kontakter 9, 10, 11, som er anbragt på printkortet 15. En programmeringsadapter 13, hvis kontakttråde 17, lederbaner eller lignende på den ene side kan oprette kontakt med høreapparat-programmeringstilslutningens 20 kontakter 9, 10, 11, og som på den anden side kan tilsluttes til den eksterne enhed via en kabelforbindelse 16, 18 og en stikbøsning 19 eller et stik, tjener til en midlertidig trådbundet signaloverføring fra eller til en ikke tegnet, ekstern programmeringsenhed.The hearing aid has a programming connection for the signal transmission from an external device, a programming device, an audio meter or from another data processing unit to at least one data store in the amplifier unit or also for reading data stored in the hearing aid. In a convenient embodiment, this programming connection in the amplifier unit 3 consists, for example, of three contacts 9, 10, 11, which are arranged on the circuit board 15. A programming adapter 13, whose contact wires 17, conductor paths or the like can make contact with the hearing aid programming connection 20 on one side contacts 9, 10, 11, and which, on the other hand, can be connected to the external unit via a cable connection 16, 18 and a connector 19 or a connector, serves for a temporary wired signal transmission from or to an unsigned external programmer.

Batteri-rummet 7 åbnes til programmeringsadapterens 13 kontaktoprettel -2s se med printkortets 15 kontakter 9, 10, 11. Derved opstår der en spalte 12 mellem den på lejesiden værende kant på batteri-rumsafdækningen 6 og den over for akslen 20 liggende og dermed i det væsentlige parallelt forløbende kant 21 på husåbningen 22. Programmeringsadapteren 13, som er udformet fladt af et bredbåndskabel 16, et multileder-bånd eller lignende, kan indsættes i høreap-æ parathuset 2 igennem denne spalte 12 og kan oprette kontakt med kontakterne 9, 10, 11, uden at batteriet skal tages ud af batteri-rummet. Den indsatte programmeringsadapter tangerer hverken batteriet eller batteri-rummet.The battery compartment 7 is opened to the contact adapter -2s of the programming adapter 13 see the contacts 9, 10, 11. of the PCB 15, thereby creating a gap 12 between the bearing-side edge of the battery compartment cover 6 and the shaft 20 which faces the shaft 20 and thus in it. substantially parallel extending edge 21 of the housing opening 22. The programming adapter 13, which is formed flat by a broadband cable 16, a multi-conductor band, or the like, can be inserted into the hearing aids housing 2 through this slot 12 and may contact the contacts 9, 10, 11, without removing the battery from the battery compartment. The inserted programming adapter does not touch the battery or the battery compartment.

I en hensigtsmæssig udformning har batteri-rummet 7 en tildannelse 24, således at batteri-rummet er lukket under programmeringen, hvorved tildan-35 nelsen 24 holder programmeringsadapterens 13 kontakttråde 17 i kontaktstillingen mod printkortets kontakter 9, 10, 11. Batteriet bliver derved i høreapparathusets batteri-rum og forsyner høreapparatet med den nødvendige energi.In a convenient embodiment, the battery compartment 7 has a configuration 24 such that the battery compartment is closed during programming, whereby the appliance 24 holds the programming wires 17 of the programming adapter 13 in the contact position against the contacts of the printed circuit board 9, 10, 11. battery compartment and supplies the hearing aid with the necessary energy.

- 4 - DK 176303 B1- 4 - DK 176303 B1

Efter afslutningen af signaloverføringen åbnes batteri-rummet kort, programmeringsadapteren 13 trækkes ud af spalten 12 og batteri-rumsafdækningen lukkes igen, hvorved spalten 12 samtidigt lukkes.At the end of the signal transfer, the battery compartment opens briefly, the programming adapter 13 is pulled out of the slot 12 and the battery compartment cover is closed again, thereby closing the slot 12 simultaneously.

I udførelseseksemplet ifølge fig. 3 er det vist, at den fladt udformede pro-5 grammeringsadapter 13 yderligere kan være suppleret med en fortykkelse som trækaflastning 23. Ifølge fig. 3 kan programmeringsadapteren 13 endvidere være tildannet eller tilsluttet som fleksibelt multileder-bånd til et fleksibelt rundkabel 18, hvorved rundkablet 18 igen kan have en bøsning 19 eller et stik.In the embodiment of FIG. 3, it is shown that the flat-shaped programming adapter 13 can be further supplemented with a thickening as strain relief 23. According to FIG. 3, the programming adapter 13 may furthermore be formed or connected as flexible multi-conductor band to a flexible circular cable 18, whereby the circular cable 18 may again have a socket 19 or plug.

Claims (8)

1. Programmerbart høreapparat med et høreapparathus (2), med en elektronisk forstærkerenhed (3) i signalbanen fra en mikrofon (4) til en lydgiver (5), s med en batteri-rumsafdækning (6), som skal åbnes, samt et batteri-rum (7) til opbevaring af et batteri (8) til den elektriske energiforsyning og med en elektrisk programmeringstilslutning, som står i elektrisk ledningsforbindelse med forstærkerenheden, kendetegnet ved, at forstærkerenhedens (3) kontakter (9, 10, 11) danner programmeringstilslutningen, og at en programmeringsa-io dapter (13) til signaloverføringen kan oprette kontakt med programmeringstilslutningens kontakter (9, 10, 11) igennem en spalte (12), som er dannet mellem den åbnede batteri-rumsafdækning (6) og høreapparathuset (2), uden at programmeringsadapteren (13) derved tangerer det med batteriet (8) monterede batteri-rum (7). is1. Programmable hearing aid with a hearing aid housing (2), with an electronic amplifier unit (3) in the signal path from a microphone (4) to a sound transducer (5), s with a battery compartment cover (6) to be opened, and a battery room (7) for storing a battery (8) for the electrical power supply and having an electrical programming connection which is in electrical wiring with the amplifier unit, characterized in that the contacts (9, 10, 11) of the amplifier unit (3) form the programming connection, and that a programming radio adapter (13) for signal transmission can contact the programming connection contacts (9, 10, 11) through a slot (12) formed between the opened battery compartment cover (6) and the hearing aid housing (2), without causing the programming adapter (13) to tangent to the battery compartment (7) mounted with the battery (8). ice 2. Høreapparat ifølge krav 1, kendetegnet ved, at forstærkerenheden (3) har et printkort (15), som bærer kontaktbaner (14), og på hvilket den elektriske programmeringstilslutnings kontakter (9, 10, 11) er anbragt.Hearing aid according to claim 1, characterized in that the amplifier unit (3) has a circuit board (15) which carries contact paths (14) and on which the contacts of the electrical programming connection (9, 10, 11) are arranged. 3. Høreapparat ifølge krav 1, kendetegnet ved, at programmeringsadapteren (13) består af et flerleder-bredbåndskabel (16) med i det mindste delvist 20 fritliggende kontakttråde (17) eller lignende.Hearing aid according to claim 1, characterized in that the programming adapter (13) consists of a multi-conductor broadband cable (16) with at least partially exposed contact wires (17) or the like. 4. Høreapparat ifølge krav 1 og 3, kendetegnet ved, at programmeringsadapteren (13) består af et fleksibelt multileder-bånd (16) med i endesiden værende lederbaner (17).Hearing aid according to claims 1 and 3, characterized in that the programming adapter (13) consists of a flexible multi-conductor band (16) with end-side conductor paths (17). 5. Høreapparat ifølge et af kravene 1-4, kendetegnet ved, at det fleksible 2s kabel (16), som bærer programmeringsadapteren (13), går over i et rundkabel (18), som til tilslutningen til en programmeringsenhed, en audiosignalkilde, et audiometer eller lignende er forsynet med en stikbøsning (19) eller et stik. —Hearing aid according to one of claims 1-4, characterized in that the flexible 2's cable (16), which carries the programming adapter (13), goes into a round cable (18) which, for connection to a programming unit, an audio signal source, a audiometer or the like is provided with a socket (19) or a plug. - 6. Høreapparat ifølge et af kravene 1 - 5, kendetegnet ved, at batteri-rumsafdækningen (6) er lejret svingbart på høreapparathuset (2) omkring 3o en aksel (20), således at der ved åbnet batteri-rum (7) i batteri-rumsafdækningens udsvungne stilling imellem akslen (20) og den derimod vendte kant (21) på husåbningen (22) dannes spalten (12) til indføring af programmeringsadapteren (13).Hearing aid according to one of claims 1 to 5, characterized in that the battery compartment cover (6) is pivotally mounted on the hearing aid housing (2) about a shaft (20), so that, when opened, the battery compartment (7) in the battery The oscillating position of the room cover between the shaft (20) and the opposite edge (21) of the housing opening (22) forms the slot (12) for insertion of the programming adapter (13). 7. Høreapparat ifølge et af kravene 1-6, kendetegnet ved, at en tildannel-35 se (24) på batteri-rummet (7) efter indføringen af programmeringsadapteren (13), ved igen helt eller delvist lukket batteri-rumsafdækning (6), holder programmeringsadapterens kontakttråde (17) i kontaktstillingen mod kontakterne - 6 - DK 176303 B1 (9, 10, 11) på forstærkerenhedens (3) elektriske programmeringstilslutning, og at programmeringsadapteren efter afslutningen af signaloverføringen kan tages af høreapparatet (1) ved åbnet batteri-rumsafdækning.Hearing aid according to one of Claims 1 to 6, characterized in that, after the insertion of the programming adapter (13), an allotment (24) of the battery compartment (7) is provided with a fully or partially closed battery compartment cover (6). , the programming wires of the programming adapter (17) hold in the contact position against the contacts - 6 - DK 176303 B1 (9, 10, 11) on the electrical programming connection of the amplifier unit (3), and after the completion of the signal transmission, the programming adapter can be removed by the hearing aid (1). compartment cover. 8. Høreapparat ifølge et af kravene 1-7, kendetegnet ved, at der er an-5 bragt en trækaflastning (23) på programmeringsadapteren (13).Hearing aid according to one of claims 1-7, characterized in that a strain relief (23) is arranged on the programming adapter (13).
DK199501410A 1994-12-14 1995-12-13 Programmable hearing aid with programming adapter DK176303B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4444586 1994-12-14
DE4444586A DE4444586C1 (en) 1994-12-14 1994-12-14 Programmable hearing aid with programming adaptor

Publications (2)

Publication Number Publication Date
DK141095A DK141095A (en) 1996-06-15
DK176303B1 true DK176303B1 (en) 2007-06-25

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5915031A (en) * 1996-04-30 1999-06-22 Siemens Hearing Instruments, Inc. Modularized hearing aid circuit structure
US5799095A (en) * 1996-04-30 1998-08-25 Siemens Hearing Instruments, Inc. Beside-the-door programming system for programming hearing aids
US6088465A (en) * 1996-04-30 2000-07-11 Siemens Hearing Instruments, Inc. Door-dependent system for enabling and adjusting options on hearing aids
DE29703150U1 (en) * 1997-02-21 1997-04-17 Siemens Audiologische Technik Gmbh, 91058 Erlangen Programmable hearing aid
DK42197A (en) 1997-04-15 1998-10-16 Toepholm & Westermann Compact modulated in-ear hearing aid
US6985598B1 (en) 1999-07-29 2006-01-10 Knowles Electronics, Inc. Programming system for programming hearing aids
DK1532842T3 (en) * 2002-07-10 2013-11-04 Oticon As Hearing aid or similar audio device and method for manufacturing a hearing aid
DE102008022925A1 (en) * 2008-05-09 2009-06-04 Siemens Medical Instruments Pte. Ltd. Hearing aid for use with charging device, has housing, programmable signal processing unit, battery box for supporting chargeable battery and programming interface for transferring programming data
DE102008024515B3 (en) * 2008-05-21 2010-04-01 Siemens Medical Instruments Pte. Ltd. Hearing aid e.g. behind-the-ear hearing aid, for assisting hearing impaired persons, has electrical contact arranged in opening of housing, contactable from outside of housing and connected with electronic circuit
DE102011083728A1 (en) 2011-09-29 2013-04-04 Siemens Medical Instruments Pte. Ltd. Hearing aid with sealants
US9859879B2 (en) 2015-09-11 2018-01-02 Knowles Electronics, Llc Method and apparatus to clip incoming signals in opposing directions when in an off state

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
CH669296A5 (en) * 1986-05-28 1989-02-28 Gfeller Ag Apparate Fabrik Fla Electroacoustic hearing aid with contact for external equipment - has battery compartment adapted to accept plug connection from external broadcast receiver or voice communication appts.
US4961230B1 (en) * 1988-05-10 1997-12-23 Minnesota Mining & Mfg Hearing aid programming interface

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DE4444586C1 (en) 1996-02-22

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