EP4573762A1 - Hörgerät und verfahren zu dessen betrieb - Google Patents
Hörgerät und verfahren zu dessen betriebInfo
- Publication number
- EP4573762A1 EP4573762A1 EP23782470.1A EP23782470A EP4573762A1 EP 4573762 A1 EP4573762 A1 EP 4573762A1 EP 23782470 A EP23782470 A EP 23782470A EP 4573762 A1 EP4573762 A1 EP 4573762A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- communication
- frequency
- channel
- hearing aid
- transceiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/55—Electric hearing aids using an external connection, either wireless or wired
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/55—Electric hearing aids using an external connection, either wireless or wired
- H04R25/552—Binaural
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/55—Electric hearing aids using an external connection, either wireless or wired
- H04R25/554—Electric hearing aids using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/55—Electric hearing aids using an external connection, either wireless or wired
- H04R25/558—Remote control, e.g. of amplification, frequency
Definitions
- the invention relates to a hearing aid and a method for operating it.
- a hearing aid is used to provide care for a hearing-impaired user and to compensate for the user's hearing loss.
- the hearing aid usually has a microphone, signal processing and a receiver.
- the microphone generates an input signal that is fed to signal processing.
- Signal processing modifies the input signal and thereby generates an output signal.
- the input signal is amplified with a frequency-dependent amplification factor, for example according to an audiogram of the user.
- the output signal is finally output to the user via the handset.
- sound signals from the environment are correspondingly modified and output to the user.
- the input signal and the output signal are each electrical signals.
- the sound signals from the environment and the sound signals emitted by the listener are acoustic signals.
- a hearing aid is also a mobile device, ie it is regularly worn by the user for a longer period of time and has only small dimensions, in the case of a hearing aid the dimensions are a few centimeters at most.
- the hearing aid generally benefits from communication with other devices, e.g. a smartphone, tablet, television or computer.
- Communication can be implemented in many ways, two particularly advantageous technologies for communication are on the one hand NFMI (near filed magnetic induction), i e.g. RFID (radio frequency identification), and on the other hand specifically NFC (near field communication). Communication via NFC in particular is defined by a corresponding standard.
- the object is achieved according to the invention by a hearing aid with the features according to claim 1 and by a method with the features according to claim 14.
- Advantageous embodiments, further developments and variants are the subject of the subclaims.
- the statements in connection with the hearing aid also apply mutatis mutandis to the method and vice versa. If steps of the method are specified below, preferred embodiments for the hearing aid result from the fact that it has a control unit (control circuit) which is designed to carry out one or more of these steps.
- the hearing aid has a communication front end (or "front end” for short).
- the communication front end has a resonance circuit and a transceiver for communication by means of electromagnetic induction. Communication is understood to mean in particular the sending and/or receiving of signals that contain data, in short a data exchange. Such signals sent and/or received by the hearing aid (or an individual device) are electromagnetic signals.
- the resonance circuit is connected to the transceiver and is used to send and receive corresponding signals as part of communication.
- the resonance circuit acts as an antenna.
- the resonance circuit is suitably a resonant circuit, with an inductance and a capacitance, which define a resonance frequency of the resonance circuit.
- the inductance When communicating using electromagnetic induction, the inductance then serves as an antenna.
- the resonance frequency is in particular a carrier frequency of the signals during communication.
- the resonance circuit is not part of the transceiver, but is designed separately from it.
- the transceiver has in particular a transmitter and a receiver.
- the transmitter is used to convert a digital signal, which is generated by the hearing aid and contains data to be sent, into a transmission signal, which is then emitted by the resonance circuit.
- the receiver is used to convert a received signal, which is received by the hearing aid using the resonance circuit and contains data to be received, into a digital signal, which is then further processed or can be processed by the hearing aid.
- the digital signal is in particular in a baseband.
- the transmission signal and the reception signal are present analogously at a reception frequency or transmission frequency, which are preferably identical.
- the transceiver more precisely its receiver and/or its transmitter and optionally also the resonance circuit, can be switched between a first communication channel at a first frequency and a second communication channel at a second frequency.
- the first and second frequencies are in particular carrier frequencies of the two communication channels and thus also define the transmission frequency and the reception frequency.
- one or both communication channels are defined by a standard, in the latter case in particular by different standards.
- the hearing aid also has a control unit, which is preferably part of a digital chip of the hearing aid.
- the control unit is in particular connected to the communication front end or is part of it.
- the control unit is designed to switch the transceiver between the first and the second communication channel, for selective communication on one of the two communication channels, i.e. at one of the two frequencies.
- the hearing aid additionally has an input transducer, signal processing and an output transducer.
- the input transducer is preferably a microphone
- the output transducer is preferably a listener.
- the hearing aid is in particular assigned to a single user and is only used by the user.
- the hearing aid serves to care for a hearing-impaired user and to compensate for the user's hearing loss.
- the input converter generates an input signal, which is fed to the signal processing.
- Signal processing is particularly a part of the digital chip.
- the signal processing modifies the input signal and thereby generates an output signal, which is therefore a modified input signal.
- the input signal is, for example, based on an audiogram of the user with a frequency-dependent amplification factor.
- the output signal is finally output to the user via the output converter.
- the first communication channel is an NFC channel and the second communication channel is a different NFMI channel.
- the transceiver is a combined NFC and NFMI transceiver.
- NFC can also be viewed as an NFMI technology.
- NFMI channel means such, in particular proprietary, NFMI technology that does not correspond to the NFC standard and is primarily determined by the technology used Frequency differs and optionally, for example, also through a different modulation method or coding method.
- the NFMI channel referred to here does not correspond to the NFC standard and is therefore not simply an alternative NFC channel.
- the first frequency is 13.56 MHz and the second frequency is 10.6 MHz.
- the first frequency is particularly suitable for communication in accordance with the NFC standard and the second frequency for another, different NFMI communication, in particular in accordance with a manufacturer's own or proprietary specification.
- one or both of the frequencies can also have other values.
- the first communication channel is an NFC channel at a first frequency of 13.56 MHz and that the second communication channel is an NFMI channel at a second frequency of 10.6 MHz.
- the two communication channels preferably, but not necessarily, serve for communication between different devices, ie one communication channel is not merely a substitute for the other communication channel, but expediently enables another connection.
- the hearing aid is a binaural hearing aid with two individual devices that are used by the same user.
- one of the individual devices is worn by the user on the left side of the head when used as intended and the other individual device on the opposite, right side of the head.
- One of the two communication channels preferably the NFMI channel, is designed for unidirectional or bidirectional communication between the two individual devices.
- the other of the two communication channels preferably the NFC channel, is then not used for communication between the individual devices, but preferably for communication with an additional device separate from the hearing aid.
- Communication with the additional device takes place either from both individual devices or only from one of the individual devices.
- one individual device to serve as a relay for the other individual device when communicating with the additional device (with a corresponding time offset due to the double use of the transceiver, e.g. in a time-division multiplexing process).
- the additional device is, for example, a smartphone, tablet, television, computer or the like.
- one of the two communication channels is preferably used exclusively for internal communication, ie for communication between the individual devices and thus within the hearing aid
- the other of the two communication channels is preferably used exclusively for external communication, ie for communication between the hearing aid and an additional device, ie another device which is in particular independent of the hearing aid.
- “Independent” is understood in particular to mean that the additional device is independent, ie can also be used without the hearing aid, has its own power supply and/or is mechanically decoupled from the hearing aid.
- the communication front end of a hearing aid with an NFMI channel in particular for communication between the two individual devices, can also be used in a particularly simple manner for NFC communication, so that corresponding components do not have to be additionally integrated into the hearing aid.
- the existing communication front end will only be slightly modified in order to be able to:
- the previous NFMI channel (which is not an NFC channel) can also be used to realize communication via an NFC channel, in particular in accordance with the NFC standard.
- the hearing aid in addition to the general NFMI functionality (e.g. data exchange between the individual devices), the hearing aid also has a specific NFC function available, e.g. Bluetooth coupling, charger recognition, localization, automatic configuration of the hearing aid, identification of additional devices relative to the hearing aid or vice versa. Accordingly, only a single communication front end is used for communication on different communication channels.
- the essential adaptation in this case is the described switchability of the transceiver (this is to be distinguished from an optional switchability of the separate resonance circuit).
- the transceiver is adjustable in such a way that a signal is or can be received and/or transmitted either at the first frequency or at the second frequency.
- the receiver and/or the transmitter are controlled accordingly and in particular a reception frequency of the receiver or a transmission frequency of the transmitter is set in such a way that reception and/or transmission takes place optionally on the first or the second frequency (the control unit is designed to carry this out).
- the communication front end suitably has an adjustable clock generator for this purpose to specify a clock (also: clock rate, clock frequency) for the transceiver.
- the clock generator is connected to the receiver and/or the transmitter in such a way that the clock is passed on to the receiver and/or the transmitter accordingly.
- the clock determines the reception frequency and/or the transmission frequency accordingly.
- the clock even corresponds to a carrier frequency, ie the receiving frequency or the transmitting frequency of the transmitter for communication on the respective communication channel.
- the clock generator directly specifies a carrier frequency for the transceiver, this carrier frequency (the clock) can now be set in order to switch between different communication channels.
- the clock generator is also referred to as a local oscillator (LO) or "clock circuit".
- the control unit is then designed to use the clock generator's clock to switch the transceiver. to set, namely to switch the clock between two different clocks. By switching the clock, the first or second communication channel is used depending on the setting (at least unidirectional, preferably bidirectional).
- the clock can be switched between the first frequency and the second frequency, i.e. in particular between two different carrier frequencies for the transceiver.
- the receiver thus uses the clock to convert the received signal down from its carrier frequency, in particular to the baseband.
- the transmitter uses the clock to up-convert the transmission signal, particularly from the baseband to the carrier frequency.
- the details of the respective conversion are of no further importance here.
- an embodiment is also suitable in which the exact frequency (in particular carrier frequency) is not chosen for one of the communication channels, but in which the clock can be switched between one of the two frequencies and a third frequency which is so close to the other of the two frequencies (in particular carrier frequencies) is that a sideband to this other frequency lies within a carrier frequency band, in particular reception frequency band, of the transceiver.
- the exact frequency in particular carrier frequency
- the clock can be switched between one of the two frequencies and a third frequency which is so close to the other of the two frequencies (in particular carrier frequencies) is that a sideband to this other frequency lies within a carrier frequency band, in particular reception frequency band, of the transceiver.
- single sideband recovery is particularly possible with an NFC channel
- the NFC standard defines data transmission through modulation, which leads to sidebands to the left and right of the carrier frequency in the corresponding signal. Accordingly, it is sufficient to set the clock and thus the reception frequency of the receiver in such a way that it lies on one side of the carrier frequency and the reception frequency band, which lies around the reception frequency, then only detects one of the two sidebands.
- the reception frequency and the reception frequency band are particularly dependent on one Subcarrier frequency (e.g. 848 kHz according to NFC standard).
- the reception frequency is then the sum or difference of the carrier frequency (ie the first or second frequency) and the subcarrier frequency.
- the reception frequency band then extends, for example, above or below the carrier frequency (alternatively, the carrier frequency is included) over the corresponding sideband and is arranged, for example, symmetrically (alternatively asymmetrically) to the reception frequency.
- a suitable bandwidth for the reception frequency band is, for example, 1.5 MHz to 2 MHz.
- one of the two communication channels is a standard channel (preferably the NFMI channel) and the other of the two communication channels is a demand channel (preferably the NFC channel).
- the standard channel is set and used by default, while the demand channel is only used as needed when a signal specifically needs to be sent or received on this communication channel.
- the communication front end has a power detector for measuring power at the frequency of the demand channel
- the control unit is designed to switch the transceiver from the standard channel to the demand channel if the power detector measures a power above a predetermined threshold at the frequency of the demand channel.
- the transceiver is therefore switched from the standard channel to the demand channel precisely when a signal is received on the demand channel.
- the power detector is specifically set to the frequency of the demand channel (for the NFC channel, e.g. 13.56 MHz) and connected to the resonance circuit in order to receive the received signal from it and to measure the power therein at the frequency of the demand channel. If this power exceeds the predetermined threshold, the transceiver is switched to the demand channel.
- the resonance circuit does not necessarily have to be adjusted, but if necessary delivers a correspondingly attenuated signal at at least one of the two frequencies, with which communication is still possible.
- the resonance circuit has an adjustable resonance frequency and the control unit is designed to set the frequency of the currently used communication channel as the resonance frequency of the resonance circuit. Analogous to the switching of the transceiver depending on the currently used frequency, the resonance circuit is then also switched accordingly in order to achieve optimal transmission and reception performance at the frequency of the respective communication channel.
- This design is only optional in itself, but improves communication, because otherwise one of the two communication channels would only be received and/or transmitted in an attenuated manner.
- the resonance frequency is expediently set by adjusting the capacitance of the resonance circuit.
- the capacitance of the resonance circuit can be adjusted accordingly for this purpose.
- the resonance circuit is designed for load modulation in that the resonance circuit has an adjustable resistance.
- the resistance is, for example, a controllable current source or an ohmic resistance.
- the load modulation is, for example, ASK load modulation according to the NFC standard.
- the transmitter has an H-bridge and the control unit is designed to control the H-bridge in such a way that the resonance circuit is short-circuited in order to realize load modulation.
- the H-bridge is basically an adjustable resistor, at least for the purpose of load modulation. The statements made above initially apply to load modulation.
- One advantage over the use of a resistor in the resonance circuit is, in particular, that the H-bridge mentioned is already present and therefore no additional components need to be added to implement load modulation specifically for NFC communication. The load modulation is therefore implemented entirely with existing components. Only the control unit is additionally programmed accordingly.
- the H-bridge is in particular a part of the preferably analog transmitter. Energy is fed into the resonance circuit via the H-bridge, which then begins to oscillate at the transmission frequency. The resulting oscillation is also subjected to phase modulation in the resonance circuit by controlling the H-bridge in the correct phase.
- the hearing aid's digital chip mentioned above is preferably used for digital signal processing.
- the communication front end described above is preferably purely analog.
- the digital chip processes the received and/or sent data and exchanges it with the communication front end in the baseband.
- the communication front end then performs up- or down-conversion to the currently selected carrier frequency, which is specified by the clock generator, as well as transmission or reception using the resonance circuit.
- a power detector is used to determine when to switch between the two communication channels (at least in one direction),
- load modulation is implemented, e.g. directly in the resonance circuit or in the transceiver,
- a control unit is designed to carry out one or more of the settings mentioned.
- any lower layers (e.g. “physical layer”) and/or upper layers (e.g. “protocol layer”) of the NFC channel are implemented in particular in the digital chip and are then combined with corresponding algorithms for the NFMI channel integrated therein in a single digital chip and are implemented either as hardware or as software.
- the method is generally a method of operating a hearing aid as described above.
- the control unit switches the transceiver between the first and the second communication channel as described, for selective communication on one of the two communication channels.
Landscapes
- 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)
- Near-Field Transmission Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022210421.8A DE102022210421A1 (de) | 2022-09-30 | 2022-09-30 | Hörgerät und Verfahren zu dessen Betrieb |
| PCT/EP2023/076638 WO2024068691A1 (de) | 2022-09-30 | 2023-09-27 | Hörgerät und verfahren zu dessen betrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4573762A1 true EP4573762A1 (de) | 2025-06-25 |
Family
ID=88236750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23782470.1A Withdrawn EP4573762A1 (de) | 2022-09-30 | 2023-09-27 | Hörgerät und verfahren zu dessen betrieb |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240406643A1 (de) |
| EP (1) | EP4573762A1 (de) |
| CN (1) | CN119908126A (de) |
| DE (1) | DE102022210421A1 (de) |
| WO (1) | WO2024068691A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006035011B4 (de) * | 2006-07-28 | 2010-11-25 | Siemens Audiologische Technik Gmbh | Programmiersystem für eine Hörhilfe und Verfahren |
| US9432780B2 (en) * | 2010-07-03 | 2016-08-30 | Starkey Laboratories, Inc. | Multi-mode radio for hearing assistance devices |
| US9485592B2 (en) * | 2012-12-04 | 2016-11-01 | Sonova Ag | Hearing instrument comprising two antennas |
| WO2015095469A1 (en) * | 2013-12-20 | 2015-06-25 | Med-El Elektromedizinische Geraete Gmbh | Active telemetry response for hearing implants |
| DE102014101502A1 (de) * | 2014-02-06 | 2015-08-06 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Elektronische Schaltung und Verfahren zum Übertragen eines ASK Signals |
| US10356537B2 (en) * | 2017-12-01 | 2019-07-16 | Semiconductor Components Industries, Llc | All-in-one method for wireless connectivity and contactless battery charging of small wearables |
| DE102021200642B3 (de) * | 2021-01-25 | 2022-03-17 | Sivantos Pte. Ltd. | Hörgerät |
-
2022
- 2022-09-30 DE DE102022210421.8A patent/DE102022210421A1/de not_active Ceased
-
2023
- 2023-09-27 WO PCT/EP2023/076638 patent/WO2024068691A1/de not_active Ceased
- 2023-09-27 EP EP23782470.1A patent/EP4573762A1/de not_active Withdrawn
- 2023-09-27 CN CN202380070096.6A patent/CN119908126A/zh active Pending
-
2024
- 2024-08-09 US US18/799,053 patent/US20240406643A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024068691A1 (de) | 2024-04-04 |
| US20240406643A1 (en) | 2024-12-05 |
| CN119908126A (zh) | 2025-04-29 |
| DE102022210421A1 (de) | 2024-04-04 |
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