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    SUPPLYING POWER TO A TRANSMITTER USING A COIN CELL BATTERY
    21.
    发明公开
    SUPPLYING POWER TO A TRANSMITTER USING A COIN CELL BATTERY 审中-公开

    公开(公告)号：US20240088459A1

    公开(公告)日：2024-03-14

    申请号：US18472423

    申请日：2023-09-22

    Applicant: DSP Group Ltd.

    Inventor： Assaf Ganor ,  Tzahi Shalit ,  Levi Schultz

    IPC: H01M10/42 ,  H01M10/04 ,  H02J7/34

    CPC classification number: H01M10/4264 ,  H01M10/0436 ,  H02J7/345

    Abstract: A coin cell powered device that includes a unit and one or more interfaces that are configured to interface between the unit, the cell coin and an external capacitor. The unit may include a regulator, a transmitter and a charge pump. The transmitter is configured to transmit signals during a transmission period while receiving power from the regulator, the power originated from the external capacitor. The charge pump is configured to perform, during a charging period, a charging process for charging the external capacitor to a charged voltage that exceeds a voltage of the cell coin, wherein the charging process may include iterations of (a) charging a charge pump capacitor by the coin cell, and (b) discharging the charge pump capacitor thereby charging the external capacitor. The capacitance of the charge pump capacitor is a fraction of a capacitance of the external capacitor. The duration of the charging period exceeds a duration of the transmission period.

    ENHANCED NOISE REDUCTION IN A VOICE ACTIVATED DEVICE
    24.
    发明申请
    ENHANCED NOISE REDUCTION IN A VOICE ACTIVATED DEVICE 有权

    公开(公告)号：US20230122089A1

    公开(公告)日：2023-04-20

    申请号：US17930658

    申请日：2022-09-08

    Applicant: DSP Group Ltd.

    Inventor： Yaakov CHEN ,  Moshe TZUR

    IPC: G10L21/0216 ,  G10L25/84

    Abstract: Noise suppression in audio signals received by a voice activated device is supported with motion sensors. Motion sensors may provide an indication of movement or motion information, such as the linear or rotational displacement of the voice activated device. A noise reduction unit, which is held in idle mode to conserve power, may be activated in response to an indication of movement. When activated, the noise reduction unit may adapt to environmental noise from the new location or orientation, and switch back to idle mode. When speech is subsequently detected in audio signals, the noise reduction unit has already adapted to the noise and accordingly may reduce noise in the audio signal with no delay when activated. Additionally or alternatively, motion information may be used by the noise reduction unit to quickly adapt to noise in the audio signal.

    Automatic frequency shift compensation (AFSC) in resonant tank circuits over the process variation
    25.
    发明授权
    Automatic frequency shift compensation (AFSC) in resonant tank circuits over the process variation 有权

    公开(公告)号：US11451194B2

    公开(公告)日：2022-09-20

    申请号：US17103880

    申请日：2020-11-24

    Applicant: DSP Group Ltd.

    Inventor： Sergey Anderson

    IPC: H03F3/45 ,  H03F1/02 ,  H03F3/193 ,  H03F1/56

    Abstract: A low noise amplifier that may include a first input port, a second input port, a first capacitor, a second capacitor, a first variable capacitor, a second variable capacitor, an inductor, a bias circuit, a tuning circuit, a first output circuit having a first output, a second output circuit having a second output; wherein the first input port is electrically coupled to a first end of the second variable capacitor, to a first end of the first capacitor, to an input of the first output circuit, and to a first port of the inductor; wherein the second input port is electrically coupled to a second end of the first variable capacitor, to a second end of the second capacitor, to an input of the second output circuit, and to a second port of the inductor; wherein a first port of the first varactor is electrically coupled to a second end of the first capacitor; wherein a second port of the second varactor is electrically coupled to a first end of the second capacitor; wherein the bias circuit is configured to supply a bias voltage to a third port of the inductor; and wherein the tuning circuit is configured to control a capacitance of the first varactor and a capacitance of the variable capacitor.

    Interacting with a true wireless headset
    26.
    发明授权
    Interacting with a true wireless headset 有权

    公开(公告)号：US11360567B2

    公开(公告)日：2022-06-14

    申请号：US16946139

    申请日：2020-06-08

    Applicant: DSP Group Ltd.

    Inventor： Nir Michael

    IPC: H04R1/10 ,  G06F3/01

    Abstract: A true wireless headset that may include a housing, a microphone that is mechanically coupled to the housing, wherein the microphone is configured to detect sound and output detection signals indicative of the sound, a tap detector that is configured to receive a first representation of the detection signals, and to process the first representation of the detection signals to determine whether a user tapped on the housing; and at least one additional circuitry that is configured to respond to a determination that the user tapped on the housing.

    Noise cancellation
    27.
    发明授权
    Noise cancellation 有权

    公开(公告)号：US11120795B2

    公开(公告)日：2021-09-14

    申请号：US16445226

    申请日：2019-06-19

    Applicant: DSP Group Ltd.

    Inventor： Adoram Erell

    IPC: G10L15/22 ,  H04R3/00 ,  G10L21/0224 ,  G10L21/0208

    Abstract: A method for noise cancellation, the method may include detecting a voice trigger or receiving an indication regarding an occurrence of a voice trigger; searching, based at least on a timing of occurrence of the voice trigger, for at least one of a noise-period and a voice-period; when finding a noise period then updating one or more noise parameters based on one or more features of sensed audio signals received during the noise period; when finding a voice period then updating one or more voice parameters based on one or more features of sensed audio signals received during the voice period; estimating, based on the one or more noise parameters and the one or more voice parameters, a probability that voice is present at one or more subsequent periods; and cancelling noise at the one or more subsequent periods, based on the voice presence probability.

    Proximity based voice activation
    29.
    发明授权
    Proximity based voice activation 有权

    公开(公告)号：US10733989B2

    公开(公告)日：2020-08-04

    申请号：US15810169

    申请日：2017-11-13

    Applicant: DSP Group Ltd.

    Inventor： Uri Yehuday

    IPC: G10L15/22 ,  G10L15/08 ,  G10L15/24 ,  G10L25/51 ,  G06F3/16 ,  H04R29/00 ,  H04R3/00 ,  H04R1/40

    Abstract: A method for proximity-based voice activation, the method may include sensing a voice command, detecting whether a person outputted the voice command while being in proximity to a voice activated device; determining whether to execute, by the voice activated device, the voice command based, at least in part, on the determination whether the person outputted the voice command while being in proximity to the voice activated device; and executing the voice command when determining to execute the voice command.

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