公开(公告)号：US07693214B2

公开(公告)日：2010-04-06

申请号：US11142237

申请日：2005-06-02

申请人： Yasunari Shida

发明人： Yasunari Shida

IPC分类号： H03H7/30 ,  H04B1/10

CPC分类号： H03H21/0012 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/061 ,  H04L2025/0349 ,  H04L2025/03503 ,  H04L2025/03611

摘要： Disclosed is a receiving device which comprises first and second AD converters for inputting a received analog signal and converting the analog signal to digital signals in response to sampling clock signals of mutually different phases, first and second adaptive equalizers for respectively receiving outputs of the first and second AD converters, third and fourth adaptive equalizers for respectively receiving outputs of the second and first AD converters, a first adder for adding the outputs of the first and second adaptive converters, a second adder for adding the outputs of the third and fourth adaptive equalizers, a first decision unit for receiving the output of the first adder, deciding a received symbol for output, and outputting a decision error, a second decision unit for receiving the output of the second adder, deciding a received symbol for output, and outputting a decision error, and a multiplexing circuit for multiplexing the received symbols output from the first and second decision units, for output. The decision error from the first decision unit is supplied to the first and second adaptive equalizers, and the decision error from the second decision unit is supplied to the third and fourth adaptive equalizers.

摘要翻译： 公开了一种接收装置，包括：第一和第二AD转换器，用于输入接收到的模拟信号，并响应于相互不同相位的采样时钟信号将模拟信号转换成数字信号;第一和第二自适应均衡器，用于分别接收第一和 第二AD转换器，用于分别接收第二和第一AD转换器的输出的第三和第四自适应均衡器，用于将第一和第二自适应转换器的输出相加的第一加法器，用于将第三和第四自适应均衡器的输出相加的第二加法器 第一判定单元，用于接收第一加法器的输出，确定接收的符号进行输出，并输出判定误差;第二判定单元，用于接收第二加法器的输出，确定接收到的符号进行输出，并输出 决定误差，以及复用电路，用于多路复用从第一和第二个输出的接收符号 决定单位，用于输出。 来自第一判定单元的判定误差被提供给第一和第二自适应均衡器，并且来自第二判定单元的判定误差被提供给第三和第四自适应均衡器。

公开(公告)号：US07590077B2

公开(公告)日：2009-09-15

申请号：US11303941

申请日：2005-12-19

申请人： Yasunari Shida

发明人： Yasunari Shida

IPC分类号： H04B3/20

CPC分类号： H04B3/23 ,  H04B3/237 ,  H04B3/238

摘要： Disclosed is a canceller device comprising a subcanceller for compensating the sampling phase shift of a plurality of analog-to-digital convert circuits for receiving a common input analog signal, converting the analog signal into digital signals responsive to respective sampling clock signals with different phases to each other, and for outputting the digital signals, a main canceller for canceling echo/cross-talk from the signal output from analog-to-digital convert circuits whose the sampling phase shifts have been compensated, and a compensation range selection circuit for determining the range of the sampling phase shift for being compensated by the subcanceller based on the tap coefficients of the main canceller.

摘要翻译： 公开了一种消除器装置，其包括用于补偿多个模拟 - 数字转换电路的采样相移以接收公共输入模拟信号的子单元，响应于具有不同相位的相应采样时钟信号将模拟信号转换成数字信号 并且用于输出数字信号，用于从已经补偿了采样相移的模数转换电路输出的信号中消除回声/串扰的主消除器和用于确定采样相位的补偿范围选择电路 采样相移的范围由基于主消除器的抽头系数的子路由器补偿。

公开(公告)号：US20060133303A1

公开(公告)日：2006-06-22

申请号：US11303941

申请日：2005-12-19

申请人： Yasunari Shida

发明人： Yasunari Shida

IPC分类号： H04B3/20

CPC分类号： H04B3/23 ,  H04B3/237 ,  H04B3/238

摘要： Disclosed is a canceller device comprising a subcanceller for compensating the sampling phase shift of a plurality of analog-to-digital convert circuits for receiving a common input analog signal, converting the analog signal into digital signals responsive to respective sampling clock signals with different phases to each other, and for outputting the digital signals, a main canceller for canceling echo/cross-talk from the signal output from analog-to-digital convert circuits whose the sampling phase shifts have been compensated, and a compensation range selection circuit for determining the range of the sampling phase shift for being compensated by the subcanceller based on the tap coefficients of the main canceller.

公开(公告)号：US5392347A

公开(公告)日：1995-02-21

申请号：US9326

申请日：1993-01-26

申请人： Tomokazu Ito ,  Yasunari Shida

发明人： Tomokazu Ito ,  Yasunari Shida

IPC分类号： H04M19/04 ,  H04Q1/50 ,  H03K9/06

CPC分类号： H04M19/04 ,  H04Q1/50

摘要： A ringing tone signal detecting circuit detects a ringing tone signal from a received signal of the echo canceler type which is supplied from a subscriber line through a hybrid circuit. The ringing tone signal detecting circuit has a sampler for sampling the received signal at a predetermined sampling frequency, a comparator for comparing an output signal from the sampler with a predetermined threshold value and producing a binary digital signal, a plurality of first through nth delay circuits for delaying the binary digital signal from the comparator for 1 through n sampling times, respectively, and a frequency detector for detecting a ringing tone signal from the binary digital signal from the comparator and output signals from the first through nth delay circuits. The circuit has particular use in detecting the ringing tone signals in the 2B1Q signaling code scheme.

摘要翻译： 振铃信号检测电路根据从用户线通过混合电路提供的回波消除器类型的接收信号来检测振铃音信号。 振铃信号检测电路具有用于以预定采样频率对接收信号进行采样的采样器，用于将来自采样器的输出信号与预定阈值进行比较并产生二进制数字信号的比较器，多个第一至第N延迟电路 用于将比较器的二进制数字信号分别延迟1至n个采样时间;以及频率检测器，用于从来自比较器的二进制数字信号中检测振铃音信号，并输出来自第一至第n延迟电路的信号。 该电路特别用于检测2B1Q信令码方案中的振铃音信号。

公开(公告)号：US20050271135A1

公开(公告)日：2005-12-08

申请号：US11142237

申请日：2005-06-02

申请人： Yasunari Shida

发明人： Yasunari Shida

IPC分类号： H03M1/10 ,  H03H7/30 ,  H03H21/00 ,  H03M1/12 ,  H04B3/06

CPC分类号： H03H21/0012 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/061 ,  H04L2025/0349 ,  H04L2025/03503 ,  H04L2025/03611

摘要： Disclosed is a receiving device which comprises first and second AD converters for inputting a received analog signal and converting the analog signal to digital signals in response to sampling clock signals of mutually different phases, first and second adaptive equalizers for respectively receiving outputs of the first and second AD converters, third and fourth adaptive equalizers for respectively receiving outputs of the second and first AD converters, a first adder for adding the outputs of the first and second adaptive converters, a second adder for adding the outputs of the third and fourth adaptive equalizers, a first decision unit for receiving the output of the first adder, deciding a received symbol for output, and outputting a decision error, a second decision unit for receiving the output of the second adder, deciding a received symbol for output, and outputting a decision error, and a multiplexing circuit for multiplexing the received symbols output from the first and second decision units, for output. The decision error from the first decision unit is supplied to the first and second adaptive equalizers, and the decision error from the second decision unit is supplied to the third and fourth adaptive equalizers.

摘要翻译： 公开了一种接收装置，包括：第一和第二AD转换器，用于输入接收到的模拟信号，并响应于相互不同相位的采样时钟信号将模拟信号转换成数字信号;第一和第二自适应均衡器，用于分别接收第一和 第二AD转换器，用于分别接收第二和第一AD转换器的输出的第三和第四自适应均衡器，用于将第一和第二自适应转换器的输出相加的第一加法器，用于将第三和第四自适应均衡器的输出相加的第二加法器 第一判定单元，用于接收第一加法器的输出，确定接收的符号进行输出，并输出判定误差;第二判定单元，用于接收第二加法器的输出，确定接收到的符号进行输出，并输出 决定误差，以及复用电路，用于多路复用从第一和第二个输出的接收符号 决定单位，用于输出。 来自第一判定单元的判定误差被提供给第一和第二自适应均衡器，并且来自第二判定单元的判定误差被提供给第三和第四自适应均衡器。

公开(公告)号：US6018558A

公开(公告)日：2000-01-25

申请号：US984820

申请日：1997-12-04

申请人： Yasunari Shida

发明人： Yasunari Shida

IPC分类号： H04L25/02 ,  G07C3/00 ,  H04M3/10 ,  H04M3/22

CPC分类号： H04M3/10 ,  H04M3/2209

摘要： A signal disconnection detection circuit has a first comparing unit for producing a signal disconnection recognition signal only when a level of the first input signal is smaller than a first threshold value; a second comparing unit for producing an incomming signal only when a level of a second input signal is larger than a second threshold value; and a counter that receives the outputs of the first and second comparing unit and starts counting up when the first comparing unit produces the signal disconnection recognition signal, determining the possibility of the signal disconnection. The counter resets the counted value and stops its operation, determining that a reception signal is not disconnected, when the second comparing unit produces the reception signal. The counter produces the signal disconnection detection signal, determining that the signal is actually disconnected, when the second comparing unit produces no incomming signal before completion of the counting up.

摘要翻译： 信号断开检测电路具有仅当第一输入信号的电平小于第一阈值时产生信号断开识别信号的第一比较单元; 第二比较单元，用于仅当第二输入信号的电平大于第二阈值时产生输入信号; 以及计数器，其接收第一和第二比较单元的输出，并且当第一比较单元产生信号断开识别信号时开始计数，确定信号断开的可能性。 当第二比较单元产生接收信号时，计数器重置计数值并停止其操作，确定接收信号未被断开。 当第二比较单元在计数结束之前不产生进入信号时，计数器产生信号断开检测信号，确定信号实际上已断开。