公开(公告)号：US20240275430A1

公开(公告)日：2024-08-15

申请号：US18641518

申请日：2024-04-22

申请人： HOYMILES POWER ELECTRONICS INC.

发明人： Hongbin YU ,  Yanliang CAI ,  Shigao ZHOU ,  Yi ZHAO ,  Bo YANG

IPC分类号： H04B3/54 ,  H04B3/21

CPC分类号： H04B3/542 ,  H04B3/21 ,  H04B3/548 ,  H04B2203/5491

摘要： A power line carrier communication apparatus, a method, and a system are provided. The power line carrier communication apparatus includes a communication processing unit, a switching network, and an impedance network. The communication processing unit is configured for modulating a communication signal into a control signal, and the communication signal includes communication data. The switching network is configured for generating a multi-level carrier signal according to the control signal, (n+1)th and lower orders of harmonics contained in the carrier signal are less than or equal to a first threshold, respectively, n represents the number of levels of the carrier signal, and n is an odd number greater than or equal to 3. The impedance network is configured for filtering the carrier signal and then coupling the filtered signal to a power line.

公开(公告)号：US12021578B2

公开(公告)日：2024-06-25

申请号：US17527880

申请日：2021-11-16

申请人： AT&T Intellectual Property I, L.P.

发明人： Ken Liu ,  Robert Bennett ,  Pamela A. M. Bogdan ,  Farhad Barzegar ,  Donald J. Barnickel ,  Irwin Gerszberg

IPC分类号： H04B3/58 ,  B64C39/02 ,  B64U101/35 ,  H04B3/21 ,  H04B3/36 ,  H04B3/46 ,  H04B3/50 ,  H04B3/52 ,  H04B3/54

CPC分类号： H04B3/58 ,  B64C39/024 ,  H04B3/21 ,  H04B3/36 ,  H04B3/46 ,  H04B3/50 ,  H04B3/52 ,  H04B3/542 ,  B64U2101/35 ,  B64U2201/104 ,  H04B2203/5425 ,  H04B2203/5441 ,  H04B2203/5445 ,  H04B2203/5479

摘要： Aspects of the subject disclosure may include, for example, a surveying system operable to receive a plurality of electromagnetic waves via a guided wave transceiver that include environmental data collected via a plurality of sensors at a plurality of remote sites. Weather pattern data is generated based on the environmental data. Other embodiments are disclosed.

公开(公告)号：US11949536B2

公开(公告)日：2024-04-02

申请号：US18249260

申请日：2021-10-07

申请人： DEUTSCHE TELEKOM AG

发明人： Peter Muggenthaler ,  Marko Loeffelholz ,  Christoph Tudziers ,  Ralph Leppla

IPC分类号： H04L12/28 ,  H04B3/21

CPC分类号： H04L12/2898 ,  H04B3/21

摘要： A method for transmitting digital subscriber connection signals to an interface of an end user via a coaxial cable includes: supplying, by a distribution point unit (DPU), first balanced subscriber connection signals to the coaxial cable by a first transformation; coupling unbalanced subscriber connection signals into the coaxial cable into a lower frequency range of an overall frequency range; attenuating, by means of a filtering device, a reflection of the unbalanced subscriber connection signals in the coaxial cable; a second transformation of the unbalanced subscriber connection signals into second balanced subscriber connection signals by means of a balun device assigned to the interface, wherein the input impedance of the filtering device is adjusted with respect to reflections from the direction of the customer terminal output; and separately making the second balanced subscriber connection signals available at the customer terminal output.

公开(公告)号：US11863245B2

公开(公告)日：2024-01-02

申请号：US17928322

申请日：2021-02-26

申请人： Hitachi Astemo, Ltd.

发明人： Yutaka Uematsu ,  Hideyuki Sakamoto

IPC分类号： H04B3/54 ,  H04B3/21 ,  H04B3/46

CPC分类号： H04B3/54 ,  H04B3/21 ,  H04B3/46

摘要： A signal transmission device includes a communication unit that is connected to an electronic device by a signal wiring and performs communication with the electronic device via the signal wiring, a signal processing unit that performs signal processing related to the communication, a power supply unit that supplies direct current to the electronic device via the signal wiring, and a filter circuit connected between the signal wiring and the power supply unit. The filter circuit includes a plurality of filters having frequency characteristics different from each other, and the signal processing unit acquires communication quality information indicating quality of the communication in at least two or more frequency bands, and determines a state of the filter circuit based on the communication quality information.

公开(公告)号：US20180278666A1

公开(公告)日：2018-09-27

申请号：US15786432

申请日：2017-10-17

申请人： IMMERSION SERVICES LLC dba IMMERSION NETWORKS

发明人： James David Johnston ,  Stephen Daniel White ,  King Wei Hor ,  Barry M. Genova

IPC分类号： H04L29/06 ,  G10L19/02 ,  G10L19/008 ,  H04N21/233

CPC分类号： G10L19/167 ,  G10L19/0017 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/0212 ,  G10L19/025 ,  G10L19/032 ,  H03H17/0272 ,  H04B1/667 ,  H04B3/20 ,  H04B3/21 ,  H04L65/601 ,  H04L65/607 ,  H04N19/45 ,  H04N19/625 ,  H04N21/233

摘要： A decoder operable to decode audio signals. The decoder operable to receive an encoded bitstream that includes bitstream synchronization command data and program command data and process the encoded bitstream and identify within the bitstream the synchronization command data. The decoder further operable to decode the program command packet and at least one program related channel data using information provided in the synchronization command data and decode program related channel data using information provided in the program command data.

公开(公告)号：US20180241418A1

公开(公告)日：2018-08-23

申请号：US15901969

申请日：2018-02-22

申请人： Murata Manufacturing Co., Ltd.

发明人： Yuichi TAKAMINE ,  Tsutomu TAKAI ,  Yuji TOYOTA

IPC分类号： H04B1/00 ,  H04B1/04 ,  H04B1/16 ,  H03H9/70 ,  H03H9/72 ,  H03H9/64 ,  H03H9/00 ,  H03H9/145 ,  H04B3/21

CPC分类号： H04B1/0057 ,  H03H9/0009 ,  H03H9/0014 ,  H03H9/145 ,  H03H9/6489 ,  H03H9/703 ,  H03H9/72 ,  H03H9/725 ,  H04B1/04 ,  H04B1/0458 ,  H04B1/1638 ,  H04B1/18 ,  H04B3/21 ,  H04B2001/0408

摘要： A multiplexer includes filters, a common terminal with which an inductance element is connected to a connection path of the common terminal and an antenna element and a capacitance element is connected in series to the connection path, and another inductance element. An input terminal of one of the filters is connected to the common terminal via the another inductance element, and is connected to a parallel resonator. In each of the filters other than the one filter, one of the input terminal and the output terminal, which is a terminal closer to the antenna element, is connected to the common terminal, and is connected to the series resonator.

公开(公告)号：US20150086006A1

公开(公告)日：2015-03-26

申请号：US14335451

申请日：2014-07-18

申请人： Oki Electric Industry Co., Ltd.

发明人： Naoya KAWABATA

IPC分类号： H04M9/08

CPC分类号： H04M9/082 ,  H04B3/21

摘要： In an echo suppressor, a frequency bin component detector compares a far-end signal amplitude spectrum with a threshold value for each frequency bin to determine whether or not each frequency bin includes a frequency component. A frequency bin echo path characteristic estimator uses the far-end signal amplitude spectrum in the frequency bins determined to have a frequency component by the frequency bin component detector and the near-end input signal amplitude spectrum of corresponding frequency bins to estimate the echo path characteristics of the frequency bins. An estimated echo signal calculation-and-echo suppressor section calculates estimated echo signals based on the echo path characteristic in each frequency bin and the far-end signal amplitude spectrum to suppress the estimated echo signals from the near-end input signal amplitude spectrum.

摘要翻译： 在回波抑制器中，频率分量分量检测器将远端信号幅度频谱与每个频率仓的阈值进行比较，以确定每个频率仓是否包括频率分量。 频率仓回波路径特性估计器使用被确定为具有频率分量检测器的频率分量的频率仓中的远端信号幅度谱和相应频率仓的近端输入信号振幅谱，以估计回波路径特性 的频率箱。 估计的回波信号计算和回波抑制器部分基于每个频率仓中的回波路径特性和远端信号振幅频谱计算估计的回波信号，以抑制来自近端输入信号振幅谱的估计回波信号。

公开(公告)号：US20140266501A1

公开(公告)日：2014-09-18

申请号：US13849363

申请日：2013-03-22

申请人： INNERTON, INC.

发明人： Kwang-Myoung Heo

IPC分类号： H01P1/213

CPC分类号： H04B3/21

摘要： Discloses are a transmission line having variable characteristic impedance and a combiner configured to combine a plurality of filter by use of the transmission line. The transmission line in accordance with an embodiment of the present invention includes: a first filter junction being connected with a first RF filter and configured to obtain an output signal of the first RF filter; a second filter junction being connected with a second RF filter and configured to obtain an output signal of the second RF filter; a first variable impedance section in which a phase of the output signal of the first RF filter is matched with a preset phase; and a second variable impedance section in which a phase of the output signal of the second RF filter is matched with the preset phase.

摘要翻译： 公开了具有可变特性阻抗的传输线和被配置为通过使用传输线组合多个滤波器的组合器。 根据本发明实施例的传输线包括：第一滤波器结，与第一RF滤波器相连，并被配置为获得第一RF滤波器的输出信号; 第二滤波器结与第二RF滤波器连接并且被配置为获得第二RF滤波器的输出信号; 第一可变阻抗部分，其中第一RF滤波器的输出信号的相位与预设相位匹配; 以及第二可变阻抗部分，其中第二RF滤波器的输出信号的相位与预设相位匹配。

公开(公告)号：US20040218756A1

公开(公告)日：2004-11-04

申请号：US10836954

申请日：2004-04-30

发明人： Xiangguo Tang ,  Guozhu Long ,  Amir H. Fazlollahi

IPC分类号： H04M001/76 ,  H04M007/00 ,  H04M009/00

CPC分类号： H04B3/21 ,  H04M3/304 ,  H04M3/34

摘要： To reduce the ISDN crosstalk in an incoming DSL signal, a crosstalk canceller observes at least a portion of the crosstalk signal and reproduces an estimate of the crosstalk signal for at least a portion of that signal within the DSL band. The crosstalk canceller applies a canceling signal based on the estimated crosstalk signal to reduce the crosstalk in the received DSL signal.

摘要翻译： 为了减少输入DSL信号中的ISDN串扰，串扰消除器观察串扰信号的至少一部分，并再现DSL带内该信号的至少一部分的串扰信号的估计。 串扰消除器基于估计的串扰信号来应用消除信号，以减少所接收的DSL信号中的串扰。

公开(公告)号：US06597787B1

公开(公告)日：2003-07-22

申请号：US09628932

申请日：2000-07-28

申请人： Ulf Lindgren ,  Mohan Misra ,  John Philipsson

发明人： Ulf Lindgren ,  Mohan Misra ,  John Philipsson

IPC分类号： H04M908

CPC分类号： H04M9/082 ,  H04B3/21

摘要： An echo cancellation device (ECD) comprises an echo canceller (EC) including a transfer function estimator (EST, H) and a subtractor (ADD) and a residual echo suppression device (G, ADD2). The residual echo suppression device (G) comprises a residual echo filter (G) having an adjustable filter function (g). This filter function (g) can be adapted to either remove from the subtractor output (TNE′) the spectral characteristics relating to the reception signal (RFE) and/or to emphasize in the subtractor output signal (TNE′) a background signal spectral content relating to the transmission signal (TNE). A noise generation means (NGM′) can be provided at the output of the adaptable filter (G) for injecting a noise process in to the filter output signal (TNE′) prior to a speech coding in a speech coder (COD). The noise process masks in the filter output signal a spectral content relating to the reception signal (RFE).

摘要翻译： 回波消除装置（ECD）包括包括传递函数估计器（EST，H）和减法器（ADD）和残余回声抑制装置（G，ADD2）的回波消除器（EC）。 残余回声抑制装置（G）包括具有可调滤波器功能（g）的残余回波滤波器（G）。 该滤波器功能（g）可以适于从减法器输出（TNE'）移除与接收信号（RFE）相关的频谱特性和/或在减法器输出信号（TNE'）中强调背景信号频谱内容 涉及传输信号（TNE）。 在适应滤波器（G）的输出处可以提供噪声发生装置（NGM'），用于在语音编码器（COD）中的语音编码之前将噪声处理注入到滤波器输出信号（TNE'）中。 噪声处理在滤波器输出信号中屏蔽与接收信号（RFE）相关的频谱内容。