公开(公告)号：US11463822B2

公开(公告)日：2022-10-04

申请号：US16439777

申请日：2019-06-13

Applicant: Widex A/S

Inventor： Niels Ole Knudsen

IPC: H04R25/00 ,  H03M3/00

Abstract: A hearing assistive device including an audio processing circuit with an analog-to-digital converter having an integrator integrating a voltage present in the summation point; a comparator comparing an output from the integrator with a reference voltage (Vref) and outputting a logical level in accordance with the comparison; a feedback loop coupling a feedback signal back to the summation point; and a reference voltage generation circuit being adapted to provide the reference voltage (Vref) being lower than a power supply voltage (Vbattery) and following the decay of the power supply voltage (Vbattery) with a predefined margin.

公开(公告)号：US09271088B2

公开(公告)日：2016-02-23

申请号：US13845721

申请日：2013-03-18

Applicant: Widex A/S

Inventor： Henning Haugaard Andersen ,  Niels Ole Knudsen

IPC: H03F99/00 ,  H04R25/00 ,  H03F1/26 ,  H03F3/217 ,  H04R3/00 ,  H03F3/68

CPC classification number: H04R25/00 ,  H03F1/26 ,  H03F3/2173 ,  H03F3/68 ,  H04R3/00 ,  H04R25/505 ,  H04R2225/49 ,  H04R2460/03

Abstract: A digital, three-level output driver (7) of the H-bridge variety for a hearing aid (20) obtains a reduced capacitive interference by providing a primary voltage (3) and a secondary voltage (8) for the output driver (7) and applying the secondary voltage (8) to both sides of the output driver (7) whenever the middle level of the three-level output driver (7) is present in the input signal for the output driver (7). The output driver (7) may be controlled from a pulse-width modulated signal, a sigma-delta pulse-density modulated signal, or a combination of those signals. The output driver (7) produces a clocked output signal consisting of a positive level, a negative level, and a zero level for driving an acoustic output transducer of the hearing aid (20). The invention provides a hearing aid (20) and a method of driving an output stage (7) of a hearing aid (20).

Abstract translation: 用于助听器（20）的H桥变换器的数字三电平输出驱动器（7）通过为输出驱动器（7）提供初级电压（3）和次级电压（8）来获得降低的电容干扰 ），并且只要三电平输出驱动器（7）的中间电平存在于输出驱动器（7）的输入信号中，则将次级电压（8）施加到输出驱动器（7）的两侧。 输出驱动器（7）可以由脉冲宽度调制信号，Σ-Δ脉冲密度调制信号或这些信号的组合来控制。 输出驱动器（7）产生由用于驱动助听器（20）的声输出换能器的正电平，负电平和零电平组成的定时输出信号。 本发明提供助听器（20）和驱动助听器（20）的输出级（7）的方法。

公开(公告)号：US11929855B2

公开(公告)日：2024-03-12

申请号：US17775052

申请日：2020-10-21

Applicant: WIDEX A/S

Inventor： Niels Ole Knudsen

IPC: H04L27/18 ,  H04L27/227 ,  H04L27/00

CPC classification number: H04L27/2273 ,  H04L2027/0026 ,  H04L2027/0067

Abstract: A digital receiver being adapted for receiving an MSK modulated signal, comprises a digital front-end unit (10) adapted for providing samples having a phase value (θmeasure) of a down-mixed signal, a phase compensation unit (11) adapted for compensating the phase value (θmeasure) by delivering a phase offset compensated sample having a phase value (θsync), and a coherent demodulator (12) adapted for recovering information content from the phase offset compensated sample. The phase compensation unit (11) is adapted for analyzing a phase value (θsync) of the phase offset compensated sample, calculating a phase offset value (θoffset) based on the phase value (θsync) of the phase offset compensated sample, and applying the phase offset value (θoffset) when delivering a subsequent phase offset compensated sample.

公开(公告)号：US10511916B2

公开(公告)日：2019-12-17

申请号：US15847347

申请日：2017-12-19

Applicant: WIDEX A/S

Inventor： Niels Ole Knudsen

IPC: H04R25/00 ,  H03M3/00

Abstract: A hearing assistive device having an input transducer (18) for picking up sound from the environment, a digital signal processor (27) for alleviating a hearing loss of a specific user by compensating an audio signal according to the users hearing deficit, and an output transducer (29) for reproducing the compensated audio signal. The hearing assistive device further includes an integrated circuit component (40) having at least one analog-to-digital converter adapted for receiving an audio input signal from a microphone and providing a data output for signal processing. The at least one analog-to-digital converter includes an AC filter (50) preventing audible signal losses towards the microphone, and the AC filter (50) is provided with all components integrated in the integrated circuit component (40).

公开(公告)号：US08929813B2

公开(公告)日：2015-01-06

申请号：US13707313

申请日：2012-12-06

Applicant: Widex A/S

Inventor： Henning Hougaard Andersen ,  Soren Kilsgaard ,  Niels Ole Knudsen

IPC: H04B5/00 ,  G06K7/00 ,  G06K7/10 ,  G06K19/07 ,  H04B17/00

CPC classification number: H04B5/0037 ,  G06K7/0008 ,  G06K7/10217 ,  G06K19/0717

Abstract: In a monitoring device consisting of a reader and a data carrier, the reader (100) comprises a control unit (101), a memory (102), a digital signal generator (103), an output driver (104), resonance capacitors (105, 107) and a transmitter coil (106). The digital signal generator (103) is adapted for supplying a digital bit sequence selected among, at least two, bit sequences stored in the memory (102) whereby the strength of the magnetic field generated by the transmitter coil (106) can be varied dependent on the bit sequence selected by the control unit (101). The invention further provides a method of controlling the strength of a magnetic field generated by the reader of the monitoring device.

Abstract translation: 在由读取器和数据载体组成的监视装置中，读取器（100）包括控制单元（101），存储器（102），数字信号发生器（103），输出驱动器（104），谐振电容器 105,107）和发射器线圈（106）。 数字信号发生器（103）适于提供从存储器（102）中存储的至少两个比特序列中选择的数字比特序列，由此发射机线圈（106）产生的磁场的强度可以依赖于变化 在由控制单元（101）选择的位序列上。 本发明还提供了一种控制由监视装置的读取器产生的磁场的强度的方法。

公开(公告)号：US12261630B2

公开(公告)日：2025-03-25

申请号：US17765688

申请日：2020-09-28

Applicant: WIDEX A/S

Inventor： Niels Ole Knudsen

IPC: H03M3/00 ,  H03F3/187 ,  H04R25/00

Abstract: A differential delta-sigma-modulator has an integrator including a pair of single-ended amplifiers. A sample clock is driving a first switchable capacitor configuration and a second switchable capacitor configuration at a predetermined switching cycle. The first switchable capacitor configuration is adapted for sampling respective outputs from the pair of single-ended amplifiers on a pair of output sampling capacitors in the first part of the switching cycle. The second switchable capacitor configuration is adapted for charging a common mode capacitor with the average voltage of the voltage sampled by the pair of output sampling capacitors in the second part of the switching cycle. The voltage across the common mode capacitor represents the common mode voltage for the integrator.

公开(公告)号：US09706315B2

公开(公告)日：2017-07-11

申请号：US14792739

申请日：2015-07-07

Applicant: WIDEX A/S

Inventor： Niels Ole Knudsen

IPC: H04R5/00 ,  H04R25/00 ,  H04B5/00 ,  H04L25/03 ,  H04L27/12 ,  H04L27/01 ,  H04L27/156

CPC classification number: H04R25/552 ,  H04B5/0075 ,  H04L25/03343 ,  H04L27/01 ,  H04L27/12 ,  H04L27/156 ,  H04R25/554

Abstract: A frequency-shift-keying (FSK) transceiver for use in a hearing aid system and having a resonant circuit including a transceiver inductance (L1), the resonant circuit having a resonance frequency, and a transfer function where gain and phase are frequency dependent, wherein the transceiver includes an FSK modulator receiving a data stream, and in response thereto outputting an FSK modulated signal to the resonant circuit for wireless transmission. The transceiver includes a controller monitoring the data stream received by the FSK modulator, and a phase equalizer unit controlled by the controller for substantially equalizing the phase distortion introduced by the frequency dependent resonant circuit. The invention also provides a hearing aid and a method of operating an FSK transceiver.

公开(公告)号：US09041574B2

公开(公告)日：2015-05-26

申请号：US13905301

申请日：2013-05-30

Applicant: Widex A/S

Inventor： Niels Ole Knudsen

IPC: H03M3/00 ,  H03M1/00 ,  H04R25/00 ,  H03M1/12

CPC classification number: H03M1/002 ,  H03M1/12 ,  H03M3/43 ,  H03M3/458 ,  H03M3/484 ,  H03M3/486 ,  H04R25/505

Abstract: In order to minimize noise and current consumption in a hearing aid, an input converter including a first voltage transformer and an analog-to-digital converter of the delta-sigma type for a hearing aid is devised. The analog-to-digital converter of the input converter has an input stage, an output stage, and a feedback loop, and the input stage includes an amplifier (QA) and an integrator (RLF). The first voltage transformer (IT) has a transformation ratio such that it provides an output voltage larger than the input voltage and is placed in the input converter upstream of the input stage. A second voltage transformer (OT) having a transformation ratio such that it provides an output voltage larger than the input voltage, is optionally placed in the feedback loop of the converter. The voltage transformers (IT, OT) are switched-capacitor voltage transformers, each transformer (IT, OT) having at least two capacitors (Ca, Cb, Cc, Cd). The invention further provides a method of converting an analog signal.

Abstract translation: 为了最小化助听器中的噪声和电流消耗，设计了包括第一电压互感器和用于助听器的delta-sigma类型的模拟 - 数字转换器的输入转换器。 输入转换器的模数转换器具有输入级，输出级和反馈回路，输入级包括放大器（QA）和积分器（RLF）。 第一变压器（IT）具有变压比，使得它提供大于输入电压的输出电压，并被放置在输入转换器的上游输入级。 具有变压比使得其提供大于输入电压的输出电压的第二变压器（OT）可选地放置在转换器的反馈环路中。 电压互感器（IT，OT）是开关电容器电压互感器，每个变压器（IT，OT）具有至少两个电容器（Ca，Cb，Cc，Cd）。 本发明还提供一种转换模拟信号的方法。

公开(公告)号：US09020063B2

公开(公告)日：2015-04-28

申请号：US14278384

申请日：2014-05-15

Applicant: Widex A/S

Inventor： Soren Mollskov Larsen ,  Niels Ole Knudsen

IPC: H04L27/10 ,  H04R25/00 ,  H04L27/14 ,  H04L27/12 ,  H04L27/156 ,  H04R3/00

CPC classification number: H04R25/50 ,  H04L27/12 ,  H04L27/14 ,  H04L27/1563 ,  H04R3/00 ,  H04R25/554 ,  H04R2225/51 ,  H04R2225/55

Abstract: An frequency shift keying (FSK) transceiver for use in a hearing aid is capable of automatic tuning of the transceiver frequency. The automatic tuning makes use of a phase difference detector and a tuning manager adapted to control the frequency of a resonant circuit of the FSK transceiver according to information received from the phase difference detector. The phase difference detector measures the phase difference across a component of the resonant circuit of the FSK transceiver. If the phase difference of a binary FSK symbol is equal to the phase difference of the opposite binary FSK symbol, the resonant circuit is tuned, otherwise the tuning manager performs a tuning procedure in order to minimize the difference in phase differences, and adjusts the frequency of the resonant circuit accordingly.

Abstract translation: 用于助听器的频移键控（FSK）收发器能够自动调谐收发器频率。 自动调谐使用相位差检测器和调谐管理器，其适于根据从相位差检测器接收的信息来控制FSK收发器的谐振电路的频率。 相位差检测器测量FSK收发器的谐振电路的分量两端的相位差。 如果二进制FSK符号的相位差等于相对的二进制FSK符号的相位差，则调谐谐振电路，否则调谐管理器执行调谐过程以最小化相位差的差异，并调整频率 的谐振电路。

公开(公告)号：US08837758B2

公开(公告)日：2014-09-16

申请号：US13845868

申请日：2013-03-18

Applicant: Widex A/S

Inventor： Niels Ole Knudsen

IPC: H04R25/00 ,  H03F3/217

CPC classification number: H04R25/30 ,  H03F3/2173 ,  H04R25/305 ,  H04R25/558 ,  H04R2225/49 ,  H04R2460/03

Abstract: In a hearing aid (40), a direct-digital H-bridge output driver stage (1) driven by a sigma-delta modulator (2) is configured to operate in a power-saving three-level output mode or a power-consuming two-level output mode. The three-level output mode of the H-bridge output driver stage (1) has low power consumption but suffers the disadvantage of emitting capacitive noise potentially interfering with the reception of radio signals in a radio receiver (17) in the hearing aid (40). By providing a novel method of selecting the two-level output mode whenever the radio receiver (17) is receiving signals, and selecting the three-level output mode whenever the radio receiver (17) is idle, this capacitive interference does not disturb the radio receiver (17) in the hearing aid (40). The invention provides a method and a hearing aid.

Abstract translation: 在助听器（40）中，由Σ-Δ调制器（2）驱动的直接数字H桥输出驱动级（1）被配置为以省电的三电平输出模式或功耗 两级输出模式。 H桥输出驱动级（1）的三电平输出模式具有低功耗，但是具有发射电容性噪声的缺点，潜在的干扰在助听器（40）中的无线电接收器（17）中的无线电信号的接收 ）。 通过提供每当无线电接收机（17）正在接收信号时选择两电平输出模式的新颖方法，并且每当无线电接收机（17）空闲时选择三电平输出模式，该电容性干扰也不会干扰无线电 助听器（40）中的接收器（17）。 本发明提供一种方法和助听器。