公开(公告)号：US07809129B2

公开(公告)日：2010-10-05

申请号：US11848376

申请日：2007-08-31

申请人： Jincheng Wu ,  Joel Clark

发明人： Jincheng Wu ,  Joel Clark

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： A method (200) of cancelling echo in a duplex communication device (100). The method can include detecting a level of noise present on an uplink signal path (104), generating a noise classifier (194) based on the detected level of noise, detecting whether uplink audio is present on the uplink signal path (104) and detecting whether downlink audio is present on a downlink signal path (102). The method further can include generating a double talk flag (136) based at least on the noise classifier, whether uplink audio is present on the uplink signal path, and whether downlink audio is present on the downlink signal path. In addition, the double talk flag, the noise classifier and an uplink signal can be processed to generate an output signal (120) having reduced echo.

摘要翻译： 一种在双工通信设备（100）中消除回波的方法（200）。 该方法可以包括检测存在于上行链路信号路径（104）上的噪声电平，基于检测到的噪声电平产生噪声分类器（194），检测上行链路信号路径（104）上是否存在上行链路音频并检测 下行链路信号路径（102）是否存在下行链路音频。 该方法还可以包括至少基于噪声分类器生成双向通话标志（136），上行链路信号路径上是否存在上行链路音频，以及下行链路信号路径中是否存在下行链路音频。 此外，可以处理双向通话标记，噪声分类器和上行链路信号以产生具有减小的回波的输出信号（120）。

公开(公告)号：USD1040505S1

公开(公告)日：2024-09-03

申请号：US29853675

申请日：2022-09-17

申请人： Jincheng Wu

设计人： Jincheng Wu

摘要： FIG. 1 is a perspective view of a shoe showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a right view thereof;
FIG. 7 is a rear elevational view thereof; and,
FIG. 8 is a front elevational view thereof.
The broken lines illustrate portions of the shoe that form no part of the claimed design.

公开(公告)号：USD1044246S1

公开(公告)日：2024-10-01

申请号：US29853681

申请日：2022-09-18

申请人： Jincheng Wu

设计人： Jincheng Wu

摘要： FIG. 1 is a perspective view of a shoe showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a right view thereof;
FIG. 7 is a front elevational view thereof; and,
FIG. 8 is a rear elevational view thereof.
The broken lines illustrate portions of the shoe that form no part of the claimed design.

公开(公告)号：US07881459B2

公开(公告)日：2011-02-01

申请号：US11839518

申请日：2007-08-15

申请人： Jincheng Wu ,  Joel A. Clark

发明人： Jincheng Wu ,  Joel A. Clark

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： An echo canceller (106) can include a first multi-band filter (152) which receives a first input signal (108) and generates a first plurality of sub-band signals (110, 111, 112), and a second multi-band filter (154) which receives a second input signal (122) and generates a second plurality of sub-band signals (156, 157, 158). The echo canceller also can include a plurality of double talk detectors (168, 169, 170) that each generate a double talk flag (182, 183, 184) based on at least a respective one of the first sub-band signals and a respective one of the second sub-band signals.

摘要翻译： 回波消除器（106）可以包括接收第一输入信号（108）并产生第一多个子带信号（110,111,112）的第一多频带滤波器（152）和第二多频带滤波器 滤波器（154），其接收第二输入信号（122）并产生第二多个子带信号（156,157,158）。 回声消除器还可以包括多个双向通话检测器（168,169,170），每个双向通话检测器基于至少第一子带信号中的相应一个和相应的第一子带信号产生双方通话标志（182,183,184） 第二个子带信号之一。

公开(公告)号：US20090046847A1

公开(公告)日：2009-02-19

申请号：US11839518

申请日：2007-08-15

申请人： Jincheng Wu ,  Joel A. Clark

发明人： Jincheng Wu ,  Joel A. Clark

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： An echo canceller (106) can include a first multi-band filter (152) which receives a first input signal (108) and generates a first plurality of sub-band signals (110, 111, 112), and a second multi-band filter (154) which receives a second input signal (122) and generates a second plurality of sub-band signals (156, 157, 158). The echo canceller also can include a plurality of double talk detectors (168, 169, 170) that each generate a double talk flag (182, 183, 184) based on at least a respective one of the first sub-band signals and a respective one of the second sub-band signals.

摘要翻译： 回波消除器（106）可以包括接收第一输入信号（108）并产生第一多个子带信号（110,111,112）的第一多频带滤波器（152）和第二多频带滤波器 滤波器（154），其接收第二输入信号（122）并产生第二多个子带信号（156,157,158）。 回声消除器还可以包括多个双向通话检测器（168,169,170），每个双向通话检测器基于至少第一子带信号中的相应一个和相应的第一子带信号产生双方通话标志（182,183,184） 第二个子带信号之一。

公开(公告)号：US20090059821A1

公开(公告)日：2009-03-05

申请号：US11848376

申请日：2007-08-31

申请人： Jincheng Wu ,  Joel A. Clark

发明人： Jincheng Wu ,  Joel A. Clark

IPC分类号： H04B3/20

CPC分类号： H04M9/082

摘要： A method (200) of cancelling echo in a duplex communication device (100). The method can include detecting a level of noise present on an uplink signal path (104), generating a noise classifier (194) based on the detected level of noise, detecting whether uplink audio is present on the uplink signal path (104) and detecting whether downlink audio is present on a downlink signal path (102). The method further can include generating a double talk flag (136) based at least on the noise classifier, whether uplink audio is present on the uplink signal path, and whether downlink audio is present on the downlink signal path. In addition, the double talk flag, the noise classifier and an uplink signal can be processed to generate an output signal (120) having reduced echo.

摘要翻译： 一种在双工通信设备（100）中消除回声的方法（200）。 该方法可以包括检测存在于上行链路信号路径（104）上的噪声电平，基于检测到的噪声电平产生噪声分类器（194），检测上行链路信号路径（104）上是否存在上行链路音频并检测 下行链路信号路径（102）是否存在下行链路音频。 该方法还可以包括至少基于噪声分类器生成双向通话标志（136），上行链路信号路径上是否存在上行链路音频，以及下行链路信号路径中是否存在下行链路音频。 此外，可以处理双向通话标记，噪声分类器和上行链路信号以产生具有减小的回波的输出信号（120）。