EP1519622B1 - 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 PDFInfo
- Publication number
- EP1519622B1 EP1519622B1 EP04019523A EP04019523A EP1519622B1 EP 1519622 B1 EP1519622 B1 EP 1519622B1 EP 04019523 A EP04019523 A EP 04019523A EP 04019523 A EP04019523 A EP 04019523A EP 1519622 B1 EP1519622 B1 EP 1519622B1
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- voltage
- hearing aid
- load
- external apparatus
- detected
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- 238000000034 method Methods 0.000 title claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 230000006870 function Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
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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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- 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
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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
- 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]
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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
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
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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
Definitions
- the present invention relates to a hearing aid device with a power supply device for supplying an external device which can be connected to the hearing aid device. Moreover, the present invention relates to a corresponding method for operating the external device connected to the hearing aid device.
- Hearing aids worn behind the ear have in most cases an audio input which serves to connect external signal sources to it.
- External signal sources are, for example, so-called CROS microphones (contraradial routing of signals), audio devices, FM transmission systems, etc.
- Some of these connected devices require a supply voltage supplied by the hearing aid.
- the CROS microphones require a very stable supply voltage with relatively low power consumption.
- Such a regulated power supply in this current range can be ensured by conventional voltage regulator.
- Hearing aid devices have traditionally been equipped with regulated supply voltage at the audio input in the past, since mainly low-power CROS microphones had to be supplied. As later miniature FM systems came on the market, the hearing aid had to be converted accordingly. Modern hearing aids are therefore already provided with unregulated power supply to the audio input. Therefore, in the case of a CROS supply, special microphone devices with internal voltage stabilization are needed.
- a four-port electronic hearing device is known, the first port of which is connected to a first signal source, such as a radio, a recorder, a radio, a television or a warning device.
- the second port is connected to a microphone and the third port is connected to a computer.
- the fourth connection and, if necessary, further connections are provided for connecting further signal sources.
- a hearing aid with a circuit is known to which external components, such as an on-off switch and a contact point, are connected.
- the pad is connected via a circuit connection to a voltage source which supplies the circuits in the circuit with different regulated voltages.
- a device for switching off signal processing devices of a hearing device is known.
- This device has a monitoring logic for turning on and off a hearing aid signal source.
- Some hearing aids provide both regulated and unregulated supply voltage at the audio input.
- the disadvantage here is that, on the one hand, an additional audio contact is required, so that the audio input typically has the following four contacts: signal contact, ground contact and two voltage supply contacts.
- Another disadvantage, if both supply voltages must be provided, is that a separate audio shoe must be provided for each application, which serves to provide either the regulated or the unregulated operating voltage for the connected device.
- EP 1 304 905 A2 is a hearing aid known that can be connected to an external device.
- the hearing aid has a detector that can be used to detect whether the external device is connected to the hearing aid or not. Depending on this, the hearing aid keeps the connection energized.
- the object of the present invention is therefore to make the power supply for connectable to hearing aids external devices more comfortable.
- a hearing aid device having a voltage supply device for supplying an external device connectable to the hearing aid device, a load detection device for detecting the electrical load which forms the external device on the voltage supply device, and a control device for controlling the voltage supply device available voltage depending on the detected electrical load.
- a method according to claim 4 for operating an external device connected to a hearing aid device by supplying the external device with an electrical voltage from the hearing aid device, detecting the electrical load that forms the external device on the hearing aid, and controlling the electrical Voltage depending on the detected electrical load.
- the voltage supply device has a regulated voltage source and an unregulated voltage source. This makes it possible, for example, automatically supply external devices with low power consumption with regulated voltage and devices with high power consumption with unregulated voltage. In addition, the automatic switching between the regulated and unregulated voltage source is based on the detected load forming the external device.
- Automatic load detection always provides the appropriate supply voltage at the audio input. This eliminates all retooling the hearing aids. Elaborate CROS devices with built-in screen circuits are also no longer needed. It also eliminates customer queries for device compatibility issues and increases product value and customer satisfaction.
- the load detection means may comprise a current measuring circuit and a comparator for comparing a measured current with a switching threshold.
- the load detection means may comprise a voltage monitoring circuit and a comparator for comparing a detected voltage with a switching threshold.
- the voltage monitoring has the advantage that it can be relatively easily realized.
- the hearing aid according to the invention shown in the block diagram of the figure has as input components a microphone 1 and a telephone coil 2. Both components supply their signals to a preamplifier 3, which is equipped with an A / D converter and a voltage regulator.
- the preamplifier 3 feeds its output signal into a digital signal processing unit 4 with clocked output stage.
- the output signal of this digital signal processing unit is fed to a receiver or loudspeaker 5.
- Both the preamplifier 3 and the digital signal processing unit 4 are powered by means of a battery 6 with voltage. Furthermore, a volume control 7, which is connected to the digital signal processing unit 4, for adjusting the volume at the receiver 5. Further, the digital signal processing unit 4 via an 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 can be programmed in a suitable manner. Finally, by a situation key 10, the operation of the digital signal processing unit 4 can be further specified. For example, it is possible to switch from pure telecoil operation to a mixed operation with consideration of microphone signals. Furthermore, the microphone operation can be specified by using one or more microphones for generating the output signal with the situation button 10.
- 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, can be taken into account in the hearing aid.
- the audio input 11 has an audio voltage supply contact, which is fed by a load detection device 12.
- This load detection device 12 is a supply voltage switching unit, with which either the voltage of the voltage regulator of the preamplifier 3 or the looped by the amplifier 3 battery voltage of the battery 6 can be switched to the audio input 11.
- the load detection device 12 measures the Current flowing into the device (not shown) connected to the audio input 11 from the supply voltage source 3 or 6. If the measured current is high, the switching unit selects the battery voltage to supply the external device. Otherwise, the voltage regulator serves as a voltage source.
- the current measurement signal can be compared with a threshold value. If the current sense signal is above the threshold, this indicates a load with high power consumption, whereas falling below the threshold indicates a load with low power consumption.
- the current measurement signal is additionally compared over a second threshold, which is above the first threshold.
- This second threshold is used to detect a short circuit of the connected external device.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Direct Current Feeding And Distribution (AREA)
- Circuit For Audible Band Transducer (AREA)
- Amplifiers (AREA)
- Control Of Voltage And Current In General (AREA)
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 device with a power supply device for supplying an external device which can be connected to the hearing aid device. Moreover, the present invention relates to a corresponding method for operating the external device connected to the hearing aid 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 most cases an audio input which serves to connect external signal sources to it. External signal sources are, for example, so-called CROS microphones (contraradial routing of signals), audio devices, FM transmission systems, etc. Some of these connected devices require a supply voltage supplied by the hearing aid. Of these, for example, the CROS microphones require a very stable supply voltage with relatively low power consumption. For three microphones of a hearing aid thus there is a power requirement up to about 300 uA. Such a regulated power supply in this current range can be ensured by conventional voltage regulator.
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 connectable to the hearing aid external devices such as miniature FM receiver require a much higher power consumption, for example, 1 to 2 mA. Since the voltage regulators 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, the unregulated battery voltage may be provided to such devices at the audio input of the hearing aid.
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 aid devices have traditionally been equipped with regulated supply voltage at the audio input in the past, since mainly low-power CROS microphones had to be supplied. As later miniature FM systems came on the market, the hearing aid had to be converted accordingly. Modern hearing aids are therefore already provided with unregulated power supply to the audio input. Therefore, in the case of a CROS supply, special microphone devices with internal voltage stabilization are needed.
Aus der
Aus der
Aus der
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 provide both regulated and unregulated supply voltage at the audio input. The disadvantage here is that, on the one hand, an additional audio contact is required, so that the audio input typically has the following four contacts: signal contact, ground contact and two voltage supply contacts. Another disadvantage, if both supply voltages must be provided, is that a separate audio shoe must be provided for each application, which serves to provide either the regulated or the unregulated operating voltage for the connected device.
Aus der Druckschrift
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 make the power supply for connectable to hearing aids external devices more comfortable.
Erfindungsgemäß wird diese Aufgabe gelöst durch ein Hörhilfegerät nach Anspruch 1 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 device according to claim 1 having a voltage supply device for supplying an external device connectable to the hearing aid device, a load detection device for detecting the electrical load which forms the external device on the voltage supply device, and a control device for controlling the voltage supply device available voltage depending on the detected electrical load.
Ferner ist erfindungsgemäß vorgesehen ein Verfahren nach Anspruch 4 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, according to the invention, a method according to
Dabei 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. Außerdem erfolgt das automatische Umschalten zwischen der geregelten und ungeregelten Spannungsquelle anhand der erkannten Last, die die externe Vorrichtung bildet.In this case, the voltage supply device has a regulated voltage source and an unregulated voltage source. This makes it possible, for example, automatically supply external devices with low power consumption with regulated voltage and devices with high power consumption with unregulated voltage. In addition, the automatic switching between the regulated and unregulated voltage source is based on the detected load forming the external device.
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 provides the appropriate supply voltage at the audio input. This eliminates all retooling the hearing aids. Elaborate CROS devices with built-in screen circuits are also no longer needed. It also eliminates customer queries for device compatibility issues and increases product value and customer satisfaction.
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 means may comprise a current measuring circuit and a comparator for comparing a measured current with a switching threshold. An advantage of the current measurement is that not only a load but also a short circuit 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 means may comprise a voltage monitoring circuit and a comparator for comparing a detected voltage with a switching threshold. The voltage monitoring 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 explained in more detail with reference to the accompanying drawing, which shows a block diagram of a hearing aid according to the invention.
Das nachfolgend näher beschriebene Ausführungsbeispiel stellt eine bevorzugte Ausführungsform der vorliegenden Erfindung dar.The embodiment described in more detail below represents a preferred embodiment of the present invention.
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 hearing aid according to the invention shown in the block diagram of the figure has as input components a microphone 1 and a telephone coil 2. Both components supply their signals to a preamplifier 3, which is equipped 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
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
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
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 means of a comparator integrated in the
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 further developed embodiment, the current measurement signal is additionally compared over a second threshold, which is above the first threshold. This second threshold is used to detect a short circuit of the connected external device. By a suitable choice of the second threshold value, it is thus possible to distinguish reliably between a consumer with a high consumption and the short circuit case. In both embodiments, only one external power supply contact is advantageously necessary, although a power supply is provided with two or more voltage sources.
Claims (6)
- Hearing aid device comprising- a voltage supply device for supplying an external apparatus which can be connected to the hearing aid device,- a load detection device (12) for detecting the electrical load, which the external apparatus forms on the voltage supply device, and- a control device for controlling the voltage which can be supplied by the voltage supply device as a function of the detected electrical load,characterised in that- the voltage supply device has a regulated voltage source and an unregulated voltage source (6), and- the control device connects the regulated or the unregulated voltages source (6) to the external apparatus as a function of the detected load.
- Hearing aid device according to claim 1, with the load detection device (12) including a current measuring circuit and a comparator for comparing a measured current with a switching threshold.
- Hearing aid device according to claim 1, with the load detection device (12) including a voltage monitoring circuit and a comparator for comparing a determined voltage with a switching threshold.
- Method for operating an external apparatus connected to a hearing aid device by- supplying the external apparatus with an electrical voltage from the hearing aid device,- detecting the electrical load, which the external apparatus forms on the hearing aid device, and- controlling the electrical voltage as a function of the detected electrical load,characterised in that- the electrical voltage is either supplied by means of a regulated voltage source or an unregulated voltage source (6), and- the regulated or unregulated voltage source is connected to the external apparatus as a function of the detected load.
- Method according to claim 4, with the electrical load being detected by means of a current measurement and subsequently comparing the measured current with a switching threshold.
- Method according to claim 4, with the electrical load being detected by monitoring the voltage on the external apparatus and subsequently comparing this voltage with a switching threshold.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10344366A DE10344366B3 (en) | 2003-09-24 | 2003-09-24 | Hearing aid with automatic switching of the power supply for external components and corresponding procedure |
| DE10344366 | 2003-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1519622A2 EP1519622A2 (en) | 2005-03-30 |
| EP1519622A3 EP1519622A3 (en) | 2009-01-21 |
| EP1519622B1 true EP1519622B1 (en) | 2010-02-17 |
Family
ID=34177930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04019523A Expired - Lifetime EP1519622B1 (en) | 2003-09-24 | 2004-08-17 | Hearing aid with automatic switching of the voltage supply for external components and associated method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7333624B2 (en) |
| EP (1) | EP1519622B1 (en) |
| DE (2) | DE10344366B3 (en) |
| DK (1) | DK1519622T3 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8031878B2 (en) * | 2005-07-28 | 2011-10-04 | Bose Corporation | Electronic interfacing with a head-mounted device |
| US7844070B2 (en) | 2006-05-30 | 2010-11-30 | Sonitus Medical, Inc. | Methods and apparatus for processing audio signals |
| US8291912B2 (en) * | 2006-08-22 | 2012-10-23 | Sonitus Medical, Inc. | Systems for manufacturing oral-based hearing aid appliances |
| US20080064993A1 (en) * | 2006-09-08 | 2008-03-13 | Sonitus Medical Inc. | Methods and apparatus for treating tinnitus |
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-
2003
- 2003-09-24 DE DE10344366A patent/DE10344366B3/en not_active Expired - Fee Related
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2004
- 2004-08-17 DE DE502004010760T patent/DE502004010760D1/en not_active Expired - Lifetime
- 2004-08-17 EP EP04019523A patent/EP1519622B1/en not_active Expired - Lifetime
- 2004-08-17 DK DK04019523.2T patent/DK1519622T3/en active
- 2004-09-24 US US10/950,016 patent/US7333624B2/en active Active
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| EP1519622A2 (en) | 2005-03-30 |
| DK1519622T3 (en) | 2010-05-31 |
| US20050111679A1 (en) | 2005-05-26 |
| EP1519622A3 (en) | 2009-01-21 |
| US7333624B2 (en) | 2008-02-19 |
| DE10344366B3 (en) | 2005-04-21 |
| DE502004010760D1 (en) | 2010-04-01 |
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