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公开(公告)号：US20240195450A1
公开(公告)日：2024-06-13
申请号：US18528163
申请日：2023-12-04
发明人： Yuan-Jih CHU , Yao-Chun CHUANG , Ching-Yen LEE , Ming Hsuan TSAI
摘要： An inquirer-side circuit of an automotive Ethernet system includes: a hybrid circuit arranged to operably couple with an MDI circuit to conduct data communication with a respondent-side circuit; a transmitting circuit coupled with a hybrid circuit and arranged to operably generate and provide a transmission signal to the hybrid circuit; a receiving circuit coupled with the hybrid circuit and arranged to operably receive and parse a received signal transmitted from the hybrid circuit to generate a data signal; a processing circuit coupled with the receiving circuit and arranged to operably process the data signal; a physical coding sublayer circuit coupled with the processing circuit and arranged to operably conduct a physical coding operation according to the instruction of the processing circuit to control the operations of the transmitting circuit; and an echo cancellation circuit coupled between the transmitting circuit and the receiving circuit.
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公开(公告)号：US20240171685A1
公开(公告)日：2024-05-23
申请号：US18283677
申请日：2022-02-18
申请人： TRANSTRON INC.
发明人： Yuki SATOMI
IPC分类号： H04M9/08 , G10L21/0208 , H04B3/23
CPC分类号： H04M9/082 , G10L21/0208 , H04B3/234 , G10L2021/02082
摘要： It is possible to accurately estimate the echo suppression amount for each frequency even when a nonlinear echo component is large. An estimated echo function having variables of a logarithm of a magnitude at each frequency of a reception signal, a frequency of the reception signal, a logarithm of a total reception value that is a summation of magnitudes of the reception signal or transmission of the reception signal in any frequency range, and a logarithm of an envelope of the total reception value is stored. An echo suppressing process is performed by inputting a value of a second reception signal (a result of converting the reception signal into a frequency domain) to a function representing an estimated echo to generate an echo suppressing mask, and multiplying an echo suppressing gain calculated based on this echo suppressing mask by a second transmission signal (transmission signal converted into a frequency domain).
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公开(公告)号：US11888545B1
公开(公告)日：2024-01-30
申请号：US17334884
申请日：2021-05-31
CPC分类号： H04B3/235 , H04B3/238 , H04B10/25891 , H04N7/17309 , G06F1/022 , H04B3/493 , H04L5/14 , H04N21/6118 , H04N21/6168
摘要： Facilitating echo cancellation within communication networks is contemplated, such as but not necessarily limited to facilitating echo cancellation within full-duplex (FDX) communication networks. The echo cancellation may optionally be performed with an echo canceller included as part of or otherwise associated with an FDX node used to facilitate interfacing signaling between a digital domain and an analog domain of a FDX or other communication network.
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公开(公告)号：US11876753B2
公开(公告)日：2024-01-16
申请号：US17842643
申请日：2022-06-16
IPC分类号： H04W4/00 , H04L5/14 , H04L25/03 , H04W72/1268 , H04B3/23
CPC分类号： H04L5/14 , H04B3/232 , H04B3/238 , H04L25/03006 , H04W72/1268
摘要： In some embodiments, a method receives a first signal that is sent in a first direction in a network. Communications in the network are full duplex communications in a same frequency band. The first signal is amplified in the first direction. The method trains a first echo canceller to cancel a first echo signal from the first signal where the first echo signal is received in a second direction. After training the first echo canceller, the trained first echo canceller is enabled. The method receives a second signal in the second direction that is sent in the second direction in the network. The second signal is amplified in the second direction. The method trains a second echo canceller to cancel a second echo signal received in the first direction from the second signal where the first echo canceller cancels the first echo signal that is received in the second direction.
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公开(公告)号：US11711111B2
公开(公告)日：2023-07-25
申请号：US17358402
申请日：2021-06-25
发明人： Cheng-Hsien Li
CPC分类号： H04B3/21 , H04B1/0475 , H04B3/23
摘要： The present invention discloses a signal transceiving apparatus having echo-canceling mechanism. A mixer circuit includes a Wheatstone bridge and a transformer winding circuit. The Wheatstone bridge includes another transformer winding circuit and a variable load and includes a first input terminal, a first output terminal, a second input terminal and a second output terminal located at each two neighboring arms in an order. A transmission circuit is coupled to the first input terminal and the second input terminal to perform signal transmission through the mixer circuit. A receiving circuit is coupled to the first output terminal and the second output terminal to perform signal receiving through the mixer circuit. A control circuit adjusts the impedance of the variable load when a residual echo noise amount does not satisfy a minimum echo noise amount condition, and stops to adjust the impedance when the residual echo noise amount satisfies the condition.
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公开(公告)号：US11677605B2
公开(公告)日：2023-06-13
申请号：US17154607
申请日：2021-01-21
发明人： June Namgoong , Krishna Kiran Mukkavilli , Taesang Yoo , Naga Bhushan , Tingfang Ji , Jay Kumar Sundararajan , Pavan Kumar Vitthaladevuni
IPC分类号： H04L27/26 , H04B3/23 , G06N3/08 , G06N3/088 , H04L5/00 , H04W72/04 , G06F18/214 , H04B3/06 , H04B3/46 , G06N3/045
CPC分类号： H04L27/2618 , G06F18/2148 , G06N3/045 , G06N3/08 , G06N3/088 , H04B3/06 , H04B3/238 , H04B3/46 , H04L5/0048 , H04L27/2615 , H04W72/04
摘要： Certain aspects of the present disclosure provide techniques for generating and decoding orthogonal frequency division (OFDM) waveforms with peak reduction tones (PRTs) designed to reduce PAPR. By generating PRT tones with a machine learning (e.g., neural network) based encoder and mapping some of the PRT tones to subcarriers used for physical channels or signals, PAPR may be reduced while efficiently using system resources.
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公开(公告)号：US20220393848A1
公开(公告)日：2022-12-08
申请号：US17842643
申请日：2022-06-16
摘要： In some embodiments, a method receives a first signal that is sent in a first direction in a network. Communications in the network are full duplex communications in a same frequency band. The first signal is amplified in the first direction. The method trains a first echo canceller to cancel a first echo signal from the first signal where the first echo signal is received in a second direction. After training the first echo canceller, the trained first echo canceller is enabled. The method receives a second signal in the second direction that is sent in the second direction in the network. The second signal is amplified in the second direction. The method trains a second echo canceller to cancel a second echo signal received in the first direction from the second signal where the first echo canceller cancels the first echo signal that is received in the second direction.
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公开(公告)号：US20220337286A1
公开(公告)日：2022-10-20
申请号：US17506725
申请日：2021-10-21
发明人： Hsuan-Ting Ho , Liang-Wei Huang , Wei-Chiang Hsu , Wei-Jyun Wang
摘要： A digital-to-analog converter circuit generates an analog transmitted signal according to a digital transmitted signal. A first echo canceller circuit generates a first echo cancelling signal according to the digital transmitted signal. A processor circuit generates an analog processed signal according to the analog transmitted signal, the first echo cancelling signal, and a received signal. An analog-to-digital converter circuit generates a digital value according to the analog processed signal and two slicer levels of a plurality of slicer levels. A storage circuit stores a look-up table. The look-up table records an offset value corresponding to the digital value. The storage circuit further outputs a first output signal according to the digital value and the offset value. The offset value is updated according to an error value associated with the first output signal.
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公开(公告)号：US20220200657A1
公开(公告)日：2022-06-23
申请号：US17358402
申请日：2021-06-25
发明人： CHENG-HSIEN LI
摘要： The present invention discloses a signal transceiving apparatus having echo-canceling mechanism. A mixer circuit includes a Wheatstone bridge and a transformer winding circuit. The Wheatstone bridge includes another transformer winding circuit and a variable load and includes a first input terminal, a first output terminal, a second input terminal and a second output terminal located at each two neighboring arms in an order. A transmission circuit is coupled to the first input terminal and the second input terminal to perform signal transmission through the mixer circuit. A receiving circuit is coupled to the first output terminal and the second output terminal to perform signal receiving through the mixer circuit. A control circuit adjusts the impedance of the variable load when a residual echo noise amount does not satisfy a minimum echo noise amount condition, and stops to adjust the impedance when the residual echo noise amount satisfies the condition.
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公开(公告)号：US11258478B1
公开(公告)日：2022-02-22
申请号：US16573679
申请日：2019-09-17
摘要： A device capable of autonomous motion includes a residual echo suppressor for suppressing echoes caused by an output reference signal. When the device outputs audio while moving with a velocity, it may receive echoes that are Doppler-shifted due to the motion. The residual echo suppressor generates estimated residual error data based on phase-shifted reference data to account for and suppress the Doppler-shifted echoes.
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