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    Link and message management improvements
    12.
    发明授权
    Link and message management improvements 有权

    公开(公告)号：US09769751B2

    公开(公告)日：2017-09-19

    申请号：US14298983

    申请日：2014-06-09

    Applicant: DSP Group LTD.

    Inventor： Oleg Maizlish ,  Ido Achrak

    IPC: H04W4/12 ,  H04W52/02 ,  H04W72/12

    CPC classification number: H04W52/0216 ,  H04W4/12 ,  H04W52/0209 ,  H04W72/121 ,  Y02D70/142

    Abstract: A method for transferring messages to wireless communication device, the method may include receiving, by an intermediate device, from a upstream device, a certain message awaiting indication that is indicative that a certain message is waiting to be sent to a certain wireless communication device; detecting, by the intermediate device, that the certain wireless communication device is in a wireless communication facilitating mode; requesting the certain wireless communication device, to re-enter the wireless communication facilitating mode at a certain time frame; retrieving the certain message from the upstream device; detecting, by the intermediate device, that the certain wireless communication device re-entered the wireless communication facilitating mode at the certain time frame; and wirelessly transmitting the certain message to the certain wireless communication device.

    Method and apparatus for ultra-low power switching microphone
    14.
    发明授权
    Method and apparatus for ultra-low power switching microphone 有权

    公开(公告)号：US09602920B2

    公开(公告)日：2017-03-21

    申请号：US14600026

    申请日：2015-01-20

    Applicant: DSP Group LTD.

    Inventor： Moshe Haiut

    IPC: H03F99/00 ,  H04R3/00 ,  H04R1/04

    CPC classification number: H04R3/00 ,  H04R1/04 ,  H04R2201/003

    Abstract: A scheme is described to switch the power supply to the MEMS microphone on and off in a cyclic manner that is synchronized with the associated ADC sampling rate. In this way the MEMS microphone amplifier, whether it is a J-FET transistor or an operational amplifier, is off most of the cycle time, and is turned on only for a few micro-seconds prior to the sample-and-hold timing of the ADC device. By this method, the average power consumption of an existing analog MEMS microphone can be reduced by a factor of 10 or more.

    TWO PORT SPEAKER ACOUSTIC MODULATOR
    15.
    发明申请
    TWO PORT SPEAKER ACOUSTIC MODULATOR 有权
    双口扬声器声学调制器

    公开(公告)号：US20160381464A1

    公开(公告)日：2016-12-29

    申请号：US15190218

    申请日：2016-06-23

    Applicant: DSP Group LTD.

    Inventor： Ori Elyada

    IPC: H04R19/02 ,  H04R3/12

    CPC classification number: H04R19/02 ,  H04R1/22 ,  H04R3/12 ,  H04R31/00 ,  H04R2217/03

    Abstract: A two-port air pump speaker that includes at least two active, phase-modulated, bi-directional shutters and an ultrasonic pumping chamber having at least two ports; a first port facing towards the listener, the forward port, and a second port facing another direction, the backward port which may be behind an acoustic baffle or inside a speaker enclosure. A two-port speaker with two active steering shutters can create continuous bi-directional airflow which leads to low distortion reproduction of low audio frequencies. The same improved design can be used also for other applications where acoustic modulation is required, especially in ultrasonic frequencies.

    Abstract translation: 一种双端口气泵扬声器，包括至少两个有源，相位调制的双向快门和具有至少两个端口的超声波泵送室; 朝向收听者的第一端口，前向端口和朝向另一方向的第二端口，后方端口可以在声音挡板之后或扬声器外壳内。 具有两个主动转向快门的双端口扬声器可以产生连续的双向气流，导致低音频的低失真再现。 同样的改进设计也可用于需要声调制的其他应用，特别是在超声波频率中。

    Dynamic gain switching digital to analog converter
    17.
    发明授权
    Dynamic gain switching digital to analog converter 有权
    动态增益切换数模转换器

    公开(公告)号：US09143157B1

    公开(公告)日：2015-09-22

    申请号：US14630817

    申请日：2015-02-25

    Applicant: DSP Group LTD.

    Inventor： Ori Elyada

    IPC: H03M1/66 ,  H03M1/70 ,  H03M1/00 ,  H03M1/08

    CPC classification number: H03M1/70 ,  H03M1/662

    Abstract: A digital to analog converter that may include a digital gain block; an analog gain block; a digital to analog conversion (DAC) block and a controller that is configured to: determine a digital gain factor, selected out of multiple digital gain factors, of the digital gain block and an analog gain factor, selected out of multiple analog gain factors of the analog gain block; wherein the DAC block is preceded by the digital gain block and is followed by the analog gain block; wherein the digital gain block is configured to multiply a digital input signal by the digital gain factor to provide an intermediate digital signal; wherein the DAC block is configured to convert the intermediate digital signal to a converted analog signal; and wherein the analog gain block is configured to multiply the converted analog signal by the analog gain factor to provide an output signal; wherein an increment of the analog gain factor results in a decrement of the digital gain factor.

    Abstract translation: 可以包括数字增益块的数模转换器; 模拟增益块 数模转换（DAC）块和控制器，其被配置为：确定数字增益块的多个数字增益因子中选择的数字增益因子和从多个模拟增益因子中选择的模拟增益因子 模拟增益块; 其中DAC块前面是数字增益块，后面是模拟增益块; 其中所述数字增益块被配置为将数字输入信号乘以所述数字增益因子以提供中间数字信号; 其中所述DAC块被配置为将所述中间数字信号转换为转换的模拟信号; 并且其中所述模拟增益块被配置为将所述转换的模拟信号乘以所述模拟增益因子以提供输出信号; 其中模拟增益因子的增量导致数字增益因子的减小。

    CONFIGURABLE MULTIMODE MULTIBAND INTEGRATED DISTRIBUTED POWER AMPLIFIER
    18.
    发明申请
    CONFIGURABLE MULTIMODE MULTIBAND INTEGRATED DISTRIBUTED POWER AMPLIFIER 审中-公开
    可配置多模多路集成分布式功率放大器

    公开(公告)号：US20150070097A1

    公开(公告)日：2015-03-12

    申请号：US14540687

    申请日：2014-11-13

    Applicant: DSP Group, Ltd.

    Inventor： Abraham Bauer ,  Eli Schwartz ,  Ilya Sima ,  Lior Blanka ,  Sergey Anderson ,  Ron Pongratz ,  Alex Mostov

    IPC: H03F3/21 ,  H04B1/04 ,  H04W88/06 ,  H03F1/02 ,  H03F3/193

    CPC classification number: H03F3/211 ,  H03F1/02 ,  H03F1/0227 ,  H03F1/0261 ,  H03F3/19 ,  H03F3/193 ,  H03F3/21 ,  H03F3/24 ,  H03F3/45179 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H04B1/04 ,  H04B2001/045 ,  H04W88/06

    Abstract: A novel and useful configurable radio frequency (RF) power amplifier (PA) and related front end module (FEM) circuit that enables manipulation of the operating point of the power amplifier resulting in configurability, multimode and multiband operating capability. The configurable PA also provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configurable power amplifier is made up of one or more configurable sub-amplifiers having each constructed to have several orders of freedom (i.e. biasing points). Each sub-amplifier and its combiner path include active and passive elements. Manipulating one or more biasing points of each sub-amplifier, and therefore of the aggregate power amplifier as well, achieves multimode and multiband operation. Biasing points include, for example, the gain and saturation point, frequency response, linearity level and EVM. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provides efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.

    Abstract translation: 一种新颖有用的可配置射频（RF）功率放大器（PA）和相关的前端模块（FEM）电路，可以对功率放大器的工作点进行操作，从而实现可配置性，多模和多频带操作能力。 可配置PA还提供高线性度和功率效率，并满足现代无线通信标准（如802.11 WLAN，3G和4G蜂窝标准，蓝牙，ZigBee等）的要求。可配置功率放大器由一个或多个可配置子系统组成， 每个放大器被构造成具有几个自由度（即偏置点）。 每个子放大器及其组合器路径包括有源和无源元件。 操纵每个子放大器的一个或多个偏置点，并因此操纵集成功率放大器，实现多模和多频带操作。 偏移点包括例如增益和饱和点，频率响应，线性度和EVM。 具有以新颖配置布置的初级和次级绕组的集成多抽头变压器提供了由各个子放大器产生的功率的有效功率组合和传输到天线。

    Active noise cancelling system
    19.
    发明授权
    Active noise cancelling system 有权

    公开(公告)号：US12080265B2

    公开(公告)日：2024-09-03

    申请号：US17774046

    申请日：2020-10-30

    Applicant: DSP GROUP LTD.

    Inventor： Paul Darlington

    IPC: H04R1/10 ,  G10K11/178

    CPC classification number: G10K11/17854 ,  G10K11/17823 ,  G10K11/17825 ,  G10K11/17881 ,  H04R1/1083 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028 ,  G10K2210/3056 ,  H04R2460/01

    Abstract: An active noise cancelling system (20) comprising: an earphone (8′) comprising: an electro-acoustic driver (11); and at least one sensing microphone (12, 13); tunable active noise cancelling circuitry (7) operative to receive a signal from the at least one sensing microphone (12, 13), the tunable active noise cancelling circuitry (7) being pre-configured in a standard tuning for a reference ear and comprising at least one noise-control filter (14, 15); and a tuning module (24) operative to configure the earphone (8′) for an individual wearer by: comparing acoustic coupling of the earphone (8′) to the individual wearer's ear with acoustic coupling to the reference ear to determine a deviation in acoustic coupling; and using the determined deviation in acoustic coupling to modify the tunable active noise cancelling circuitry (7) by a predetermined degree based on the determined deviation in acoustic coupling.

    Radio frequency digital to analog conversion
    20.
    发明授权
    Radio frequency digital to analog conversion 有权

    公开(公告)号：US11979118B2

    公开(公告)日：2024-05-07

    申请号：US17455009

    申请日：2021-11-15

    Applicant: DSP Group Ltd.

    Inventor： Steve Anderson

    IPC: H03M1/10 ,  H03F3/21

    CPC classification number: H03F3/211 ,  H03M1/1009 ,  H03F2200/451

    Abstract: There is provided a RF-DAC that may include (i) a first PAM that includes a first group of first power amplifiers of different amplifications, (ii) a second PAM that includes a second group of second power amplifiers of different amplifications; (iii) a load that includes an output port and a transformer; (iv) power amplifiers control units, and a transformer control unit. During a cycle of operation (i) each one of the first and second PAMs is configured to receive one or more power amplifiers digital control signals and activate a single power amplifier per each of the first and second PAMS, (ii) the transformer control unit is configured to receive a transformer digital control signal and control a transformer parameter of the transformer, and (iii) the transformer is configured to receive a first PAM output signal and a second PAM output signal, and output a transformer output signal that reflects digital information represented by the one or more power amplifiers digital control signals and the transformer digital control signal.

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