EP1519622A2 - Hearing aid with automatic switching of the voltage supply for external components and associated method - Google Patents

Hearing aid with automatic switching of the voltage supply for external components and associated method Download PDF

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Publication number
EP1519622A2
EP1519622A2 EP04019523A EP04019523A EP1519622A2 EP 1519622 A2 EP1519622 A2 EP 1519622A2 EP 04019523 A EP04019523 A EP 04019523A EP 04019523 A EP04019523 A EP 04019523A EP 1519622 A2 EP1519622 A2 EP 1519622A2
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EP
European Patent Office
Prior art keywords
voltage
hearing aid
load
external device
electrical
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EP04019523A
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German (de)
French (fr)
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EP1519622B1 (en
EP1519622A3 (en
Inventor
Kunibert Husung
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Sivantos GmbH
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Siemens Audioligische Technik GmbH
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/53—Hearing aid for unilateral hearing impairment using Contralateral Routing Of Signals [CROS]
    • 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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • 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

Definitions

  • the present invention relates to a hearing aid with a Power supply device for supplying a the hearing aid device connectable external device.
  • the present invention relates to a corresponding Method for operating the connected to the hearing aid external device.
  • Hearing aids worn behind the ear have in In most cases an audio input which serves external Signal sources to connect.
  • External signal sources For example, so-called CROS microphones (contraradial routing of signals), audio equipment, FM transmission systems etc. Some of these connected devices require one from Hearing aid supplied supply voltage. Need of it For example, the CROS microphones an extremely stable supply voltage at relatively low power consumption. For three microphones of a hearing aid is thus a Power consumption up to about 300 ⁇ A.
  • Such a regulated Voltage supply in this current range can be by usual Voltage regulator can be ensured.
  • Hearing aids have traditionally been used in the past regulated supply voltage at the audio input, because mainly CROS microphones with low power consumption too to supply. As later small miniature FM systems on came the market, the hearing aids had to do this accordingly to be converted. Modern hearing aids are therefore already with unregulated power supply at the audio input Mistake. Therefore, in the case of a CROS supply, special Microphone devices with internal voltage stabilization needed.
  • From DE 37 05 478 A1 is an electronic hearing device known with four connections, of which the first connection with a first signal source, e.g. a wireless, a recorder, a radio, a television or a warning device, connected is.
  • the second connection is with a microphone and the third port is connected to a computer.
  • the fourth connection and possibly other connections are for Connecting additional signal sources provided.
  • T2 From DE 690 31 277 T2 is a hearing aid with a circuit Known on the external components, such as an on-off switch and a contact point, are connected.
  • the contact point is via a circuit connection with a Voltage source connected to the circuits in the circuit supplied with different regulated voltages.
  • From DE 102 11 364 A1 is a device for switching off of signal processing devices of a hearing aid known. This device has a watchdog logic for turning on and off a hearing aid signal source.
  • the disadvantage here is that on the one hand an additional Audio contact is needed, so the audio input is typically has the following four contacts: signal contact, Ground contact and two power supply contacts.
  • Another disadvantage when providing both supply voltages need to be, is that for every application a separate audio shoe provided must be, which serves, either the regulated or the unregulated operating voltage for the connected Device to provide.
  • the object of the present invention is therefore to the power supply for connectable to hearing aids make external devices more comfortable.
  • this object is achieved by a hearing aid with a power supply for supply a connectable to the hearing aid external device, a load detection device for detecting the electrical load connecting the external device to the power supply forms, and a control device for controlling the power supply device available voltage depending on the detected electrical Load.
  • the invention provides a method for Operating an external device connected to a hearing aid Device by supplying the external device with a electrical voltage from the hearing aid, detecting the electrical load affecting the external device at the Hearing aid forms, and controlling the electrical voltage depending on the detected electrical load.
  • Automatic load detection always makes the right choice Supply voltage provided at the audio input. Thereby eliminates all retooling work on the hearing aids. Elaborate CROS devices with built-in screen circuits will be also not needed anymore. In addition, customer inquiries are omitted because of device compatibility issues and the value of Products as well as customer satisfaction increase.
  • the power supply device has a regulated voltage source and an unregulated voltage source. This makes it possible, for example, with external devices low power consumption automatically with regulated voltage and devices with high power consumption with unregulated voltage to supply.
  • the automatic switching takes place between the regulated and unregulated voltage source the detected load forming the external device.
  • the load detection device may be a current measuring circuit and a comparator for comparing a measured current with a switching threshold.
  • Advantageous to the Current measurement is that not only a load but also a Short circuit case can be detected.
  • the load detection device may include a voltage monitoring circuit and a comparator for comparison a determined voltage with a switching threshold include.
  • the voltage monitor has the advantage that it can be relatively easily realized.
  • Hearing aid has a microphone as input components 1 and a telecoil 2. Deliver both components their signals to a preamplifier 3, with an A / D converter and a voltage regulator.
  • the preamplifier 3 feeds its output signal into a digital one Signal processing unit 4 with clocked output stage.
  • the output signal of this digital signal processing unit is supplied to a receiver or loudspeaker 5.
  • Both the preamplifier 3 and the digital signal processing unit 4 are using a battery 6 with voltage provided. Furthermore, a volume control 7, which is connected to the digital signal processing unit 4 is to adjust the volume on the handset 5. Further is the digital signal processing unit 4 via a MTO switch 8 in the microphone mode, the telecoil operation or the off state switchable. With a programming socket 9, the digital signal processing unit 4 program in a suitable way. Finally, through a Situation key 10 the operation of the digital signal processing unit 4 further specified. That's the way it is For example, possible from the pure telecoil operation in a mixed operation with consideration of microphone signals to switch. Furthermore, the microphone operation can be specified thereby be that with the situation key 10 one or more Microphones used to generate the output signal become.
  • the preamplifier 3 has an additional audio input 11, via which an audio signal from an external device, such as a CROS microphone and / or a Miniature FM receiver, which takes into account hearing aid can be.
  • the audio input 11 has an audio voltage supply contact, that of a load detection device 12 is fed.
  • This load detection device 12 is a supply voltage switching unit with either the voltage of the voltage regulator of the preamplifier 3 or the looped by the amplifier 3 battery voltage of Battery 6 can be switched to the audio input 11.
  • Load detection measures the load detection device 12 the Power entering the device connected to the audio input 11 (not shown) from the supply voltage source. 3 or 6 is flowing. If the measured current is high, then the switching unit, the battery voltage to supply the selected external device. Otherwise, the voltage regulator is used as a voltage source.
  • Comparator can be the current measurement signal with a threshold be compared. If the current measurement signal is above the Threshold, this indicates a load with high power consumption whereas the falling below the threshold value pointing to a load with low power consumption.
  • the current sense signal becomes additionally compared over a second threshold, which is above the first threshold.
  • This second one Threshold is used to short-circuit the connected External device to determine.

Abstract

The hearing aid has a microphone (1) and a telephone coil (2) connected to a preamplifier (3). An audio input (11) is connected to the preamplifier and to a load monitoring circuit (12). The load monitoring circuit is connected to the preamplifier. This is connected to a processing circuit (4) connected to in turn to a loudspeaker (5). A MTO switch (8), a programmer plug input (9) and a situation button (10). The hearing aid incorporates a battery (6) and a volume setting circuit (7).

Description

Die vorliegende Erfindung betrifft ein Hörhilfegerät mit einer Spannungsversorgungseinrichtung zur Versorgung eines an das Hörhilfegerät anschließbaren externen Vorrichtung. Darüber hinaus betrifft die vorliegende Erfindung ein entsprechendes Verfahren zum Betreiben der an das Hörhilfegerät angeschlossenen externen Vorrichtung.The present invention relates to a hearing aid with a Power supply device for supplying a the hearing aid device connectable external device. About that In addition, the present invention relates to a corresponding Method for operating the connected to the hearing aid external device.

Hörhilfegeräte, die hinter dem Ohr getragen werden, haben in den meisten Fällen einen Audioeingang welcher dazu dient, externe Signalquellen daran anzuschließen. Externe Signalquellen sind beispielsweise sogenannte CROS-Mikrofone (contraradial routing of signals), Audiogeräte, FM-Übertragungssysteme usw. Einige dieser angeschlossenen Geräte benötigen eine vom Hörhilfegerät gelieferte Versorgungsspannung. Davon benötigen beispielsweise die CROS-Mikrofone eine äußerst stabile Versorgungsspannung bei verhältnismäßig geringem Stromverbrauch. Für drei Mikrofone eines Hörhilfegeräts besteht somit ein Strombedarf bis zu etwa 300 µA. Eine derartige geregelte Spannungsversorgung in diesem Strombereich kann durch übliche Spannungsregler gewährleistet werden.Hearing aids worn behind the ear have in In most cases an audio input which serves external Signal sources to connect. External signal sources For example, so-called CROS microphones (contraradial routing of signals), audio equipment, FM transmission systems etc. Some of these connected devices require one from Hearing aid supplied supply voltage. Need of it For example, the CROS microphones an extremely stable supply voltage at relatively low power consumption. For three microphones of a hearing aid is thus a Power consumption up to about 300 μA. Such a regulated Voltage supply in this current range can be by usual Voltage regulator can be ensured.

Andere an das Hörhilfegerät anschließbare externe Geräte, wie z.B. Miniatur-FM-Empfänger benötigen eine wesentlich höhere Stromaufnahme von beispielsweise 1 bis 2 mA. Da die Spannungsregler eine hochohmige Quellimpedanz besitzen, so dass die Spannung bei derart hohen Strömen zusammenbrechen würde, sind sie für diese Geräte als Spannungsquelle nicht geeignet. Aus diesem Grund kann für solche Geräte am Audioeingang des Hörhilfegeräts die ungeregelte Batteriespannung bereitgestellt werden. Other external devices that can be connected to the hearing aid, such as e.g. Miniature FM receivers require a much higher Current consumption of, for example, 1 to 2 mA. Because the voltage regulator have a high impedance source impedance, so that the voltage would collapse at such high currents they are not suitable for these devices as a voltage source. For this reason, for such devices at the audio input of the Hearing aid provided the unregulated battery voltage become.

Hörhilfegeräte wurden in der Vergangenheit üblicherweise mit geregelter Versorgungsspannung am Audioeingang ausgestattet, da hauptsächlich CROS-Mikrofone mit geringer Stromaufnahme zu versorgen waren. Als später kleine Miniatur-FM-Systeme auf den Markt kamen, mussten die Hörhilfegeräte hierfür entsprechend umgerüstet werden. Moderne Hörhilfegeräte sind daher bereits mit ungeregelter Spannungsversorgung am Audioeingang versehen. Daher werden im Falle einer CROS-Versorgung spezielle Mikrofongeräte mit interner Spannungsstabilisierung benötigt.Hearing aids have traditionally been used in the past regulated supply voltage at the audio input, because mainly CROS microphones with low power consumption too to supply. As later small miniature FM systems on came the market, the hearing aids had to do this accordingly to be converted. Modern hearing aids are therefore already with unregulated power supply at the audio input Mistake. Therefore, in the case of a CROS supply, special Microphone devices with internal voltage stabilization needed.

Aus der DE 37 05 478 A1 ist eine elektronische Hörvorrichtung mit vier Anschlüssen bekannt, von denen der erste Anschluss mit einer ersten Signalquelle, das ist z.B. ein Radioapparat, ein Recorder, ein Funkgerät, ein Fernsehgerät oder ein Warngerät, verbunden ist. Der zweite Anschluss ist mit einem Mikrofon und der dritte Anschluss mit einem Computer verbunden. Der vierte Anschluss und ggfs. weitere Anschlüsse sind zum Anschließen weiterer Signalquellen vorgesehen.From DE 37 05 478 A1 is an electronic hearing device known with four connections, of which the first connection with a first signal source, e.g. a wireless, a recorder, a radio, a television or a warning device, connected is. The second connection is with a microphone and the third port is connected to a computer. The fourth connection and possibly other connections are for Connecting additional signal sources provided.

Aus der DE 690 31 277 T2 ist eine Hörhilfe mit einem Schaltkreis bekannt, an dem externe Bauelemente, wie ein Ein-Aus-Schalter und eine Kontaktstelle, angeschlossen sind. Die Kontaktstelle ist über einen Schaltkreisanschluss mit einer Spannungsquelle verbunden, die die Schaltungen im Schaltkreis mit verschiedenen geregelten Spannungen versorgt.From DE 690 31 277 T2 is a hearing aid with a circuit Known on the external components, such as an on-off switch and a contact point, are connected. The contact point is via a circuit connection with a Voltage source connected to the circuits in the circuit supplied with different regulated voltages.

Aus der DE 102 11 364 A1 ist eine Vorrichtung zum Abschalten von Signalverarbeitungsvorrichtungen eines Hörgeräts bekannt. Dieses Gerät weist eine Überwachungslogik zum An- und Abschalten einer Hörgerätesignalquelle auf.From DE 102 11 364 A1 is a device for switching off of signal processing devices of a hearing aid known. This device has a watchdog logic for turning on and off a hearing aid signal source.

Einige Hörhilfegeräte stellen sowohl eine geregelte als auch eine ungeregelte Versorgungsspannung am Audioeingang zur Verfügung. Nachteilig dabei ist, dass zum einen ein zusätzlicher Audiokontakt benötigt wird, so dass der Audioeingang typischerweise über die folgenden vier Kontakte verfügt: Signalkontakt, Massekontakt und zwei Spannungsversorgungskontakte. Ein weiterer Nachteil, wenn beide Versorgungsspannungen bereitgestellt werden müssen, besteht darin, dass für jeden Anwendungsfall ein gesonderter Audioschuh zur Verfügung gestellt werden muss, welcher dazu dient, entweder die geregelte oder die ungeregelte Betriebsspannung für das angeschlossene Gerät bereitzustellen.Some hearing aids pose both a regulated and a an unregulated supply voltage at the audio input. The disadvantage here is that on the one hand an additional Audio contact is needed, so the audio input is typically has the following four contacts: signal contact, Ground contact and two power supply contacts. Another disadvantage when providing both supply voltages need to be, is that for every application a separate audio shoe provided must be, which serves, either the regulated or the unregulated operating voltage for the connected Device to provide.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, die Spannungsversorgung für an Hörhilfegeräte anschließbare externe Vorrichtungen komfortabler zu gestalten.The object of the present invention is therefore to the power supply for connectable to hearing aids make external devices more comfortable.

Erfindungsgemäß wird diese Aufgabe gelöst durch ein Hörhilfegerät mit einer Spannungsversorgungseinrichtung zur Versorgung eines an das Hörhilfegerät anschließbaren externen Vorrichtung, einer Lasterkennungseinrichtung zum Erkennen der elektrischen Last, die die externe Vorrichtung an der Spannungsversorgungseinrichtung bildet, und einer Steuereinrichtung zum Steuern der von der Spannungsversorgungseinrichtung lieferbaren Spannung in Abhängigkeit von der erkannten elektrischen Last.According to the invention this object is achieved by a hearing aid with a power supply for supply a connectable to the hearing aid external device, a load detection device for detecting the electrical load connecting the external device to the power supply forms, and a control device for controlling the power supply device available voltage depending on the detected electrical Load.

Ferner ist erfindungsgemäß vorgesehen ein Verfahren zum Betreiben einer an ein Hörhilfegerät angeschlossenen externen Vorrichtung durch Versorgung der externen Vorrichtung mit einer elektrischen Spannung von dem Hörhilfegerät aus, Erkennen der elektrischen Last, die die externe Vorrichtung an dem Hörhilfegerät bildet, und Steuern der elektrischen Spannung in Abhängigkeit von der erkannten elektrischen Last.Furthermore, the invention provides a method for Operating an external device connected to a hearing aid Device by supplying the external device with a electrical voltage from the hearing aid, detecting the electrical load affecting the external device at the Hearing aid forms, and controlling the electrical voltage depending on the detected electrical load.

Durch die automatische Lasterkennung wird stets die geeignete Versorgungsspannung am Audioeingang bereitgestellt. Dadurch entfallen sämtliche Umrüstarbeiten an den Hörhilfegeräten. Aufwändige CROS-Geräte mit eingebauten Siebschaltungen werden ebenfalls nicht mehr benötigt. Außerdem entfallen Kundenanfragen wegen Gerätekompatibilitätsproblemen und der Wert des Produkts sowie die Kundenzufriedenheit steigen. Automatic load detection always makes the right choice Supply voltage provided at the audio input. Thereby eliminates all retooling work on the hearing aids. Elaborate CROS devices with built-in screen circuits will be also not needed anymore. In addition, customer inquiries are omitted because of device compatibility issues and the value of Products as well as customer satisfaction increase.

Vorzugsweise besitzt die Spannungsversorgungseinrichtung eine geregelte Spannungsquelle und eine ungeregelte Spannungsquelle. Damit ist es möglich, beispielsweise externe Geräte mit geringem Stromverbrauch automatisch mit geregelter Spannung und Geräte mit hohem Stromverbrauch mit ungeregelter Spannung zu versorgen.Preferably, the power supply device has a regulated voltage source and an unregulated voltage source. This makes it possible, for example, with external devices low power consumption automatically with regulated voltage and devices with high power consumption with unregulated voltage to supply.

Vorteilhafterweise erfolgt das automatische Umschalten zwischen der geregelten und ungeregelten Spannungsquelle anhand der erkannten Last, die die externe Vorrichtung bildet.Advantageously, the automatic switching takes place between the regulated and unregulated voltage source the detected load forming the external device.

Die Lasterkennungseinrichtung kann eine Strommessschaltung und einen Komparator zum Vergleichen eines gemessenen Stroms mit einem Schaltschwellwert umfassen. Vorteilhaft an der Strommessung ist, dass nicht nur eine Last sondern auch ein Kurzschlussfall erkannt werden kann.The load detection device may be a current measuring circuit and a comparator for comparing a measured current with a switching threshold. Advantageous to the Current measurement is that not only a load but also a Short circuit case can be detected.

Die Lasterkennungseinrichtung kann alternativ auch eine Spannungsüberwachungsschaltung und einen Komparator zum Vergleichen einer ermittelten Spannung mit einem Schaltschwellwert umfassen. Die Spannungsüberwachung hat den Vorteil, dass sie verhältnismäßig einfach realisiert werden kann.Alternatively, the load detection device may include a voltage monitoring circuit and a comparator for comparison a determined voltage with a switching threshold include. The voltage monitor has the advantage that it can be relatively easily realized.

Die vorliegende Erfindung wird nun anhand der beigefügten Zeichnung näher erläutert, die ein Blockschaltbild eines erfindungsgemäßen Hörhilfegeräts zeigt.The present invention will now be described with reference to the attached Drawing explained in more detail, which is a block diagram of an inventive Hearing aid shows.

Das nachfolgend näher beschriebene Ausführungsbeispiel stellt eine bevorzugte Ausführungsform der vorliegenden Erfindung dar.The embodiment described in more detail below a preferred embodiment of the present invention represents.

Das in dem Blockschaltbild der Figur dargestellte erfindungsgemäße Hörhilfegerät besitzt als Eingangskomponenten ein Mikrofon 1 und eine Telefonspule 2. Beide Komponenten liefern ihre Signale an einen Vorverstärker 3, der mit einem A/D-Wandler und einem Spannungsregler ausgestattet ist. The invention shown in the block diagram of the figure Hearing aid has a microphone as input components 1 and a telecoil 2. Deliver both components their signals to a preamplifier 3, with an A / D converter and a voltage regulator.

Der Vorverstärker 3 speist sein Ausgangssignal in eine digitale Signalverarbeitungseinheit 4 mit getakteter Endstufe. Das Ausgangssignal dieser digitalen Signalverarbeitungseinheit wird einem Hörer bzw. Lautsprecher 5 zugeführt.The preamplifier 3 feeds its output signal into a digital one Signal processing unit 4 with clocked output stage. The output signal of this digital signal processing unit is supplied to a receiver or loudspeaker 5.

Sowohl der Vorverstärker 3 als auch die digitale Signalverarbeitungseinheit 4 werden mit Hilfe einer Batterie 6 mit Spannung versorgt. Des Weiteren dient ein Lautstärkesteller 7, der an die digitale Signalverarbeitungseinheit 4 angeschlossen ist, zur Einstellung der Lautstärke an dem Hörer 5. Ferner ist die digitale Signalverarbeitungseinheit 4 über einen MTO-Schalter 8 in den Mikrofonbetrieb, den Telefonspulenbetrieb oder den Auszustand schaltbar. Mit einer Programmierbuchse 9 lässt sich die digitale Signalverarbeitungseinheit 4 in geeigneter Weise programmieren. Schließlich kann durch eine Situationstaste 10 die Betriebsweise der digitalen Signalverarbeitungseinheit 4 weiter spezifiziert werden. So ist es beispielsweise möglich, vom reinen Telefonspulenbetrieb in einen Mischbetrieb mit Berücksichtigung von Mikrofonsignalen zu schalten. Ferner kann der Mikrofonbetrieb dadurch spezifiziert werden, dass mit der Situationstaste 10 eines oder mehrere Mikrofone zur Erzeugung des Ausgangssignals herangezogen werden.Both the preamplifier 3 and the digital signal processing unit 4 are using a battery 6 with voltage provided. Furthermore, a volume control 7, which is connected to the digital signal processing unit 4 is to adjust the volume on the handset 5. Further is the digital signal processing unit 4 via a MTO switch 8 in the microphone mode, the telecoil operation or the off state switchable. With a programming socket 9, the digital signal processing unit 4 program in a suitable way. Finally, through a Situation key 10 the operation of the digital signal processing unit 4 further specified. That's the way it is For example, possible from the pure telecoil operation in a mixed operation with consideration of microphone signals to switch. Furthermore, the microphone operation can be specified thereby be that with the situation key 10 one or more Microphones used to generate the output signal become.

Der Vorverstärker 3 verfügt über einen zusätzlichen Audioeingang 11, über den ein Audiosignal von einer externen Vorrichtung, wie beispielsweise einem CROS-Mikrofon und/oder einem Miniatur-FM-Empfänger, in dem Hörhilfegerät berücksichtigt werden kann. Der Audioeingang 11 besitzt einen Audiospannungsversorgungskontakt, der von einer Lasterkennungseinrichtung 12 gespeist wird. Diese Lasterkennungseinrichtung 12 ist eine Versorgungsspannungsumschalteinheit, mit der entweder die Spannung des Spannungsreglers des Vorverstärkers 3 oder die durch den Verstärker 3 geschleifte Batteriespannung der Batterie 6 an den Audioeingang 11 geschaltet werden kann. Zur Lasterkennung misst die Lasterkennungseinrichtung 12 den Strom, der in die am Audioeingang 11 angeschlossene Vorrichtung (nicht dargestellt) von der Versorgungsspannungsquelle 3 oder 6 fließt. Falls der gemessene Strom hoch ist, wird von der Umschalteinheit die Batteriespannung zur Versorgung der externen Vorrichtung gewählt. Andernfalls dient der Spannungsregler als Spannungsquelle.The preamplifier 3 has an additional audio input 11, via which an audio signal from an external device, such as a CROS microphone and / or a Miniature FM receiver, which takes into account hearing aid can be. The audio input 11 has an audio voltage supply contact, that of a load detection device 12 is fed. This load detection device 12 is a supply voltage switching unit with either the voltage of the voltage regulator of the preamplifier 3 or the looped by the amplifier 3 battery voltage of Battery 6 can be switched to the audio input 11. to Load detection measures the load detection device 12 the Power entering the device connected to the audio input 11 (not shown) from the supply voltage source. 3 or 6 is flowing. If the measured current is high, then the switching unit, the battery voltage to supply the selected external device. Otherwise, the voltage regulator is used as a voltage source.

Durch einen in die Lasterkennungseinrichtung 12 integrierten Komparator kann das Strommesssignal mit einem Schwellwert verglichen werden. Falls das Strommesssignal über dem Schwellwert liegt, deutet dies auf eine Last mit hohem Stromverbrauch hin, wogegen das Unterschreiten des Schwellwerts auf ein Last mit geringem Stromverbrauch hindeutet.By an integrated into the load detection device 12 Comparator can be the current measurement signal with a threshold be compared. If the current measurement signal is above the Threshold, this indicates a load with high power consumption whereas the falling below the threshold value pointing to a load with low power consumption.

Bei einer weiter entwickelten Ausführungsform wird das Strommesssignal zusätzlich über einem zweiten Schwellwert verglichen, der über dem ersten Schwellwert liegt. Dieser zweite Schwellwert dient dazu, einen Kurzschluss der angeschlossenen externen Vorrichtung feststellen zu können. Durch geeignete Wahl des zweiten Schwellwerts kann somit sicher zwischen einem Verbraucher mit hohem Verbrauch und dem Kurzschlussfall unterschieden werden. Bei beiden Ausführungsformen ist in vorteilhafter Weise nur ein Spannungsversorgungskontakt nach außen notwendig, obwohl eine Spannungsversorgung mit zwei oder mehreren Spannungsquellen bereitgestellt wird.In a more advanced embodiment, the current sense signal becomes additionally compared over a second threshold, which is above the first threshold. This second one Threshold is used to short-circuit the connected External device to determine. By suitable Choice of the second threshold can thus be sure between a Consumers with high consumption and the short circuit case be differentiated. In both embodiments is in advantageously only one power supply contact after outside necessary, although a power supply with two or more power sources.

Claims (10)

Hörhilfegerät mit einer Spannungsversorgungseinrichtung zur Versorgung einer an das Hörhilfegerät anschließbaren externen Vorrichtung,
gekennzeichnet durch eine Lasterkennungseinrichtung (12) zum Erkennen der elektrischen Last, die die externe Vorrichtung an der Spannungsversorgungseinrichtung bildet, und eine Steuereinrichtung zum Steuern der von der Spannungsversorgungseinrichtung lieferbaren Spannung in Abhängigkeit von der erkannten elektrischen Last. Hearing aid with a voltage supply device for supplying an external device which can be connected to the hearing aid device,
marked by a load detecting means (12) for detecting the electric load constituting the external device to the power supply means, and a control device for controlling the voltage that can be supplied by the voltage supply device as a function of the detected electrical load. Hörhilfegerät nach Anspruch 1, wobei die Spannungsversorgungseinrichtung eine geregelte Spannungsquelle und eine ungeregelte Spannungsquelle (6) besitzt.Hearing aid according to claim 1, wherein the voltage supply device a regulated voltage source and an unregulated Voltage source (6) has. Hörhilfegerät nach Anspruch 2, wobei die Steuereinrichtung in Abhängigkeit von der erkannten Last die geregelte oder die ungeregelte Spannungsquelle (6) an die externe Vorrichtung schaltet.Hearing aid according to claim 2, wherein the control device depending on the detected load, the regulated or the unregulated voltage source (6) to the external device on. Hörhilfegerät nach einem der vorhergehenden Ansprüche, wobei die Lasterkennungseinrichtung (12) eine Strommessschaltung und einen Komparator zum Vergleichen eines gemessenen Stroms mit einem Schaltschwellwert umfasst.Hearing aid according to one of the preceding claims, wherein the load detection means (12) comprises a current measuring circuit and a comparator for comparing a measured one Current with a switching threshold includes. Hörhilfegerät nach einem der Ansprüche 1 bis 3, wobei die Lasterkennungseinrichtung (12) eine Spannungsüberwachungsschaltung und einen Komparator zum Vergleichen einer ermittelten Spannung mit einem Schaltschwellwert umfasst.Hearing aid according to one of claims 1 to 3, wherein the Load detection means (12) a voltage monitoring circuit and a comparator for comparing a detected one Voltage with a switching threshold includes. Verfahren zum Betreiben einer an ein Hörhilfegerät angeschlossenen externen Vorrichtung durch Versorgung der externen Vorrichtung mit einer elektrischen Spannung von dem Hörhilfegerät aus,
gekennzeichnet durch Erkennen der elektrischen Last, die die externe Vorrichtung an dem Hörhilfegerät bildet, und Steuern der elektrischen Spannung in Abhängigkeit von der erkannten elektrischen Last. A method for operating an external device connected to a hearing aid device Supplying the external device with an electrical voltage from the hearing aid,
marked by Detecting the electrical load that the external device forms on the hearing aid, and Controlling the electrical voltage as a function of the detected electrical load. Verfahren nach Anspruch 6, wobei das Versorgen mit der elektrischen Spannung entweder durch eine geregelte Spannungsquelle oder eine ungeregelte Spannungsquelle (6) erfolgt.The method of claim 6, wherein supplying the electrical Voltage either by a regulated voltage source or an unregulated voltage source (6) takes place. Verfahren nach Anspruch 7, wobei in Abhängigkeit von der erkannten Last die geregelte oder die ungeregelte Spannungsquelle an die externe Vorrichtung geschaltet wird.Method according to claim 7, wherein, depending on the detected load the regulated or unregulated voltage source is switched to the external device. Verfahren nach einem der Ansprüche 6 bis 8, wobei das Erkennen der elektrischen Last durch eine Strommessung und anschließenden Vergleich des gemessenen Stroms mit einem Schaltschwellwert erfolgt.Method according to one of claims 6 to 8, wherein the detecting the electrical load by a current measurement and subsequent Comparison of the measured current with a Switching threshold takes place. Verfahren nach einem der Ansprüche 6 bis 8, wobei das Erkennen der elektrischen Last durch Überwachen der Spannung an der externen Vorrichtung und anschließenden Vergleich dieser Spannung mit einem Schaltschwellwert erfolgt.Method according to one of claims 6 to 8, wherein the Detecting the electrical load by monitoring the voltage at the external device and subsequent comparison of these Voltage with a switching threshold takes place.
EP04019523A 2003-09-24 2004-08-17 Hearing aid with automatic switching of the voltage supply for external components and associated method Not-in-force EP1519622B1 (en)

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EP1519622A3 (en) 2009-01-21
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DE502004010760D1 (en) 2010-04-01
DK1519622T3 (en) 2010-05-31
US7333624B2 (en) 2008-02-19
US20050111679A1 (en) 2005-05-26

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