公开(公告)号：US08295476B2

公开(公告)日：2012-10-23

申请号：US12259796

申请日：2008-10-28

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04M9/08

CPC classification number: H04B3/23

Abstract: An echo canceller and an echo cancellation method are provided. In the echo cancellation method, a transmitting data sequence is received, and M taps are provided accordingly. In addition, the M taps are received, and N taps are output according to an echo distribution information, in which the M and N are natural numbers, and M>N. Besides, the N taps are multiplied by N tap coefficients respectively to generate N products. Further, the N products are summed up to generate an echo cancellation signal. Thereby, the cost of the echo cancellation is decreased.

Abstract translation: 提供回声消除器和回声消除方法。 在回波消除方法中，接收发送数据序列，并相应地提供M个抽头。 另外，接收M个抽头，根据回波分布信息输出N个抽头，其中M和N是自然数，M> N。 此外，N个抽头分别乘以N个抽头系数，以产生N个乘积。 此外，总结N个乘积以产生回波消除信号。 因此，回波抵消的成本降低。

公开(公告)号：US08229038B2

公开(公告)日：2012-07-24

申请号：US12265987

申请日：2008-11-06

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04L27/06 ,  H03D1/00

CPC classification number: H04L27/01 ,  H04L1/0053 ,  H04L1/201

Abstract: A transceiver apparatus, a receiver and a power saving method thereof are provided. The receiver includes an analog-to-digital converter, an equalizer, a slicer, a delay unit, a decoder, a select unit and a control unit. The analog-to-digital converter transforms a received signal into a digital signal. The equalizer adjusts the digital signal to generate an equalized signal. The slicer receives and slices the equalized signal and generates a sliced signal. The delay unit delays the sliced signal. The decoder determines whether to decode the equalized signal or not according the control signal. The select unit selects one of the output of the delayed sliced signal and the output of the decoder to be an output signal according to a second control signal. The control unit determines whether to enable the control signal and the second control signal according to the state of the sliced signal and the output signal.

Abstract translation: 提供收发器装置，接收器和省电方法。 接收机包括模数转换器，均衡器，限幅器，延迟单元，解码器，选择单元和控制单元。 模数转换器将接收的信号转换为数字信号。 均衡器调整数字信号以产生均衡的信号。 切片器接收并切片均衡信号并产生切片信号。 延迟单元延迟切片信号。 解码器根据控制信号确定是否解码均衡信号。 选择单元根据第二控制信号选择延迟分片信号的输出和解码器的输出之一作为输出信号。 控制单元根据分片信号和输出信号的状态确定是否启用控制信号和第二控制信号。

公开(公告)号：US20080101337A1

公开(公告)日：2008-05-01

申请号：US11555203

申请日：2006-10-31

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04L12/66

CPC classification number: H04L12/66

Abstract: A novel physical layer circuit enables the computer equipments in connection with the invented physical layer circuit to transmit and to receive data through the telephone cord. The physical layer circuit may be provided in a network interface chipset and comprises an encoder circuit, a transmitter circuit, a receiving filter, an analog to digital converter, a clock signal generator and a decoder circuit. The present invention also discloses the network interface chipset that contains the physical layer circuit, the local area communications system using the network interface chipset.

Abstract translation: 新颖的物理层电路使得与本发明的物理层电路相连的计算机设备能够通过电话线传输和接收数据。 物理层电路可以设置在网络接口芯片组中，并且包括编码器电路，发射机电路，接收滤波器，模数转换器，时钟信号发生器和解码器电路。 本发明还公开了包含物理层电路的网络接口芯片组，使用网络接口芯片组的局域通信系统。

公开(公告)号：US08238451B2

公开(公告)日：2012-08-07

申请号：US12388757

申请日：2009-02-19

Applicant: Tsu-Chun Liu ,  Liang-Ping Lin

Inventor： Tsu-Chun Liu ,  Liang-Ping Lin

IPC: H04B3/00

CPC classification number: H04L25/028

Abstract: A network transmitting apparatus and a power saving method thereof are provided. The network transmitting apparatus includes a chip, a transformer, and a power regulating unit. The chip includes a detecting and controlling unit, an analog circuit, and a digital circuit. The detecting and controlling unit receives a received signal and detects the received signal and a state of the chip to generate a first control signal. The transformer has a first side coupled to the chip and a second side. The power regulating unit coupled to the detecting and controlling unit and a center tap of the first side of the transformer is used for receiving a voltage, generating a first regulated voltage according to the first control signal, and connecting the first regulated voltage to the center tap of the first side of the transformer, the analog circuit, and the digital circuit.

Abstract translation: 提供一种网络发送装置及其省电方法。 网络发送装置包括芯片，变压器和功率调节单元。 该芯片包括检测和控制单元，模拟电路和数字电路。 检测和控制单元接收接收信号并检测接收到的信号和芯片的状态以产生第一控制信号。 变压器具有耦合到芯片的第一侧和第二侧。 耦合到检测和控制单元的功率调节单元和变压器的第一侧的中心抽头用于接收电压，根据第一控制信号产生第一调节电压，并将第一调节电压连接到中心 抽头变压器的第一面，模拟电路和数字电路。

公开(公告)号：US08054100B1

公开(公告)日：2011-11-08

申请号：US12958410

申请日：2010-12-02

Applicant: Ting-Ko Liao ,  Tsu-Chun Liu

Inventor： Ting-Ko Liao ,  Tsu-Chun Liu

IPC: H03K17/16

CPC classification number: H04L25/0278 ,  H04L25/0266 ,  H04L25/0272 ,  H04L25/028

Abstract: A line transceiver apparatus for multiple transmission standards including a operational amplifier (OP-AMP), a transformer unit, a first variable resistor unit to a sixth variable resistor unit, and a variable resistor control unit is provided. The first resistor and the second resistor are coupled between transmission nodes of the line transceiver apparatus and input nodes of the OP-AMP, and the load nodes of the transformer unit are receiving nodes of the line transceiver apparatus. The variable resistor control unit adjusts the impedances of the first variable resistor unit to the sixth variable resistor unit according to a transmission standard selection signal so as to enable the line transceiver apparatus to support multiple transmission standards.

Abstract translation: 提供了包括运算放大器（OP-AMP），变压器单元，到第六可变电阻器单元的第一可变电阻器单元和可变电阻器控制单元的用于多传输标准的线路收发器设备。 第一电阻器和第二电阻器耦合在线路收发器设备的传输节点和OP-AMP的输入节点之间，并且变压器单元的负载节点正在接收线路收发器设备的节点。 可变电阻器控制单元根据传输标准选择信号调整第一可变电阻器单元与第六可变电阻器单元的阻抗，使得线路收发器设备能够支持多个传输标准。

公开(公告)号：US20100118984A1

公开(公告)日：2010-05-13

申请号：US12388757

申请日：2009-02-19

Applicant: Tsu-Chun Liu ,  Liang-Ping Lin

Inventor： Tsu-Chun Liu ,  Liang-Ping Lin

IPC: H04B3/00

CPC classification number: H04L25/028

Abstract: A network transmitting apparatus and a power saving method thereof are provided. The network transmitting apparatus includes a chip, a transformer, and a power regulating unit. The chip includes a detecting and controlling unit, an analog circuit, and a digital circuit. The detecting and controlling unit receives a received signal and detects the received signal and a state of the chip to generate a first control signal. The transformer has a first side coupled to the chip and a second side. The power regulating unit coupled to the detecting and controlling unit and a center tap of the first side of the transformer is used for receiving a voltage, generating a first regulated voltage according to the first control signal, and connecting the first regulated voltage to the center tap of the first side of the transformer, the analog circuit, and the digital circuit.

Abstract translation: 提供一种网络发送装置及其省电方法。 网络发送装置包括芯片，变压器和功率调节单元。 该芯片包括检测和控制单元，模拟电路和数字电路。 检测和控制单元接收接收信号并检测接收到的信号和芯片的状态以产生第一控制信号。 变压器具有耦合到芯片的第一侧和第二侧。 耦合到检测和控制单元的功率调节单元和变压器的第一侧的中心抽头用于接收电压，根据第一控制信号产生第一调节电压，并将第一调节电压连接到中心 抽头变压器的第一面，模拟电路和数字电路。

公开(公告)号：US20100048137A1

公开(公告)日：2010-02-25

申请号：US12259796

申请日：2008-10-28

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04B1/00

CPC classification number: H04B3/23

Abstract: An echo canceller and an echo cancellation method are provided. In the echo cancellation method, a transmitting data sequence is received, and M taps are provided accordingly. In addition, the M taps are received, and N taps are output according to an echo distribution information, in which the M and N are natural numbers, and M>N. Besides, the N taps are multiplied by N tap coefficients respectively to generate N products. Further, the N products are summed up to generate an echo cancellation signal. Thereby, the cost of the echo cancellation is decreased.

Abstract translation: 提供回声消除器和回声消除方法。 在回波消除方法中，接收发送数据序列，并相应地提供M个抽头。 另外，接收M个抽头，根据回波分布信息输出N个抽头，其中M和N是自然数，M> N。 此外，N个抽头分别乘以N个抽头系数，以产生N个乘积。 此外，总结N个乘积以产生回波消除信号。 因此，回波抵消的成本降低。

公开(公告)号：US20100027407A1

公开(公告)日：2010-02-04

申请号：US12243194

申请日：2008-10-01

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04J3/10

CPC classification number: H04B3/232

Abstract: A transceiver and an echo cancellation method are disclosed. The echo cancellation method includes producing an echo cancellation signal according to a transmission signal; adjusting the amplitude, the delay time or a combination of the amplitude and the delay time of the echo cancellation signal according to an adjusting parameter; receiving an echo signal derived from the transmission signal and performing a subtraction operation on the echo signal by using the echo cancellation signal so as to obtain an echo residual; and producing the adjusting parameter according to the echo residual. The provided method can effectively reduce the interference caused by the echo signal.

Abstract translation: 公开了一种收发机和回波消除方法。 回波消除方法包括根据发送信号产生回波消除信号; 根据调整参数调整振幅，延迟时间或回波消除信号的幅度和延迟时间的组合; 接收从发送信号导出的回波信号，并通过使用回波消除信号对回波信号进行减法运算，以获得回波残差; 并根据回波残差产生调整参数。 所提供的方法可以有效地减少由回波信号引起的干扰。

公开(公告)号：US20060093068A1

公开(公告)日：2006-05-04

申请号：US10906500

申请日：2005-02-23

Applicant: Tsu-Chun Liu ,  Ming-Lu Wu

Inventor： Tsu-Chun Liu ,  Ming-Lu Wu

IPC: H04L25/06 ,  H04B1/10

CPC classification number: H04L25/0296

Abstract: A DC wander canceling device is provided for canceling DC wander. The DC wander canceling device comprises an analog front end, an equalizer, a slicer, and a digital/analog DC wander canceller. The digital/analog DC wander canceller is coupled to the slicer and the analog front end for receiving a sliced signal. According to the difference of the received sliced signal and the input signal of the slicer, the digital/analog DC wander canceller compensates the equalized signal to cancel a digital DC wander, and also cancel an analog DC wander at the input of the analog front end, to enhance the accuracy of signal demodulation.

Abstract translation: 提供DC漂移消除装置，用于消除DC漂移。 DC漂移消除装置包括模拟前端，均衡器，限幅器和数字/模拟DC漫游消除器。 数字/模拟直流漂移消除器耦合到限幅器和模拟前端，用于接收分片信号。 根据接收到的切片信号与切片器的输入信号的不同，数字/模拟直流漂移消除器补偿均衡信号以消除数字直流漂移，并且还消除模拟前端输入端的模拟直流漂移 ，提高信号解调的准确性。