专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06606047B1 Methods and apparatus for estimating clipped samples during analog to digital conversion 有权
标题翻译：用于在模数转换期间估计限幅样本的方法和装置
公开(公告)号：US06606047B1
公开(公告)日：2003-08-12
申请号：US09700888
申请日：2000-11-20
申请人： Per Ola Börjesson , Mikael Isaksson , Per Ödling , Daniel Bengtsson , Gunnar Bahlenberg , Magnus Johansson , Lennart Olsson , Sven Göran Ökvist
发明人： Per Ola Börjesson , Mikael Isaksson , Per Ödling , Daniel Bengtsson , Gunnar Bahlenberg , Magnus Johansson , Lennart Olsson , Sven Göran Ökvist
IPC分类号： H03M112
CPC分类号： H03M1/12
摘要： A circuit, for digitizing an analogue signal includes an analogue to digital converter, a clip processor adapted to estimate a value for clipped digital signal samples, and a buffer adapted to dynamically store a plurality of digitized samples produced by the analogue to digital converter. The clip processor is adapted to read digitized samples from the buffer and replace clipped digitized samples with the estimated values, thereby mitigating the effects of clipping in an output of the circuit.
摘要翻译：用于数字化模拟信号的电路包括模数转换器，适于估计经裁剪的数字信号样本的值的剪辑处理器，以及适于动态地存储由模数转换器产生的多个数字化采样的缓冲器。剪辑处理器适于从缓冲器读取数字化样本，并用估计值替换剪切的数字化样本，从而减轻限幅在电路输出中的影响。

2. 发明授权

US07069165B2 Method and arrangement for signal loop test 有权
公开(公告)号：US07069165B2
公开(公告)日：2006-06-27
申请号：US10840820
申请日：2004-05-07
申请人： Jonas Gustafsson Rosenberg , Fredrik Lindqvist , Adam Wiå , Antoni Fertner , Axel Frank Jensen , Per Ola Börjesson , Per Ödling
发明人： Jonas Gustafsson Rosenberg , Fredrik Lindqvist , Adam Wiå , Antoni Fertner , Axel Frank Jensen , Per Ola Börjesson , Per Ödling
IPC分类号： G01D18/00 , G01D3/00 , G01R15/00
CPC分类号： G01R27/04 , H04B3/46 , H04M1/24 , H04M3/305 , H04M3/306
摘要： The invention refers to single-ended test of a loop with the aid of a transceiver, wherein an input impedance (Zin(ƒ)) of the loop is generated. The transceiver has a digital part, a codec and an analog part and is connected to the loop. With the aid of a transmitted and a reflected broadband signal (vin, vout) an echo transfer function Hecho(ƒ)=V(f)out/Vin(f) is generated, which also can be expressed as H echo ⁡ ( f ) = H ∞ ⁡ ( f ) ⁢ Z in ⁡ ( f ) + Z h0 ⁡ ( f ) Z in ⁡ ( f ) + Z hyb ⁡ ( f ) . Here Zh0(ƒ), Zhyb(ƒ) and H∞(ƒ) are model values for the transceiver. In a calibration process a test transceiver, with the same type of hardware as the transceiver, is connected to known impedances, replacing the loop. Hecho(ƒ)=V(f)out/Vin(f) is generated for the known impedances and the model values are generated and are stored in a memory in the transceiver. The stored model values are then used when the input impedance (Zin(ƒ)) for the loop is generated after a measurement of the broadband signal (Vin, vout) is performed.

3. 发明授权

US08290122B2 Method and device for estimating properties of a telecommunication transmission line 有权
标题翻译：用于估计电信传输线路性质的方法和装置
公开(公告)号：US08290122B2
公开(公告)日：2012-10-16
申请号：US12091314
申请日：2005-10-27
申请人： Stefan Allevad , Per Ödling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Börjesson , Jaume Rius i Riu
发明人： Stefan Allevad , Per Ödling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Börjesson , Jaume Rius i Riu
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04B3/46
摘要： A method and device for estimating one or more transmission properties of a telecommunication transmission line. At least one signal is sent on the line, the at least one signal including at least two frequencies for which the absolute value of the line propagation constant times the line length is less than π, and a resulting signal is received. An estimate of at least one transmission line property is then determined by examining the relationship between the sent and resulting signal or signals. The process may be repeated, if necessary. The estimate determination may also be repeated one or more times, with each successive estimate preferably using for the determination only those frequencies for which, as previously estimated, the absolute value of the line propagation constant times the line length is less than π.
摘要翻译：一种用于估计电信传输线的一个或多个传输特性的方法和装置。在该线上发送至少一个信号，所述至少一个信号包括线路传播常数的绝对值乘以线路长度的至少两个频率小于＆pgr，并且接收到所得到的信号。然后，通过检查所发送和产生的信号或信号之间的关系来确定至少一个传输线属性的估计。如果需要，可以重复该过程。估计确定也可以重复一次或多次，其中优选地使用每个连续估计仅用于确定如前所述的线路传播常数的绝对值乘以线长度的频率小于＆pgr的那些频率。

4. 发明授权

US08428224B2 Method for transmission line analysis 有权
标题翻译：传输线分析方法
公开(公告)号：US08428224B2
公开(公告)日：2013-04-23
申请号：US12988314
申请日：2008-04-23
申请人： Antoni Fertner , Per Ola Börjesson , Klas Ericson
发明人： Antoni Fertner , Per Ola Börjesson , Klas Ericson
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04B3/46
摘要： The present invention concerns methods for estimating one or more transmission properties of a telecommunications transmission line. Estimates of the line input impedance, Zin at a frequency ƒ, and the line capacitance Ĉ are made. An estimate is then made in dependence of Ĉ, the frequency ƒ and a value Γ, where Γ satisfies the relationship Γ coth (Γ)=Zin·jωĈ, and ω=2πƒ. Accuracy may be improved by least squares fitting a curve to a set of intermediate values and then generating an estimate from the coefficients of the curve.
摘要翻译：本发明涉及用于估计电信传输线路的一个或多个传输特性的方法。进行线路输入阻抗的估计，频率f的Zin和线路电容C。然后根据C，频率f和值Gamma进行估计，其中Gamma满足关系Gamma coth（Gamma）= Zin·jomegaC，ω= 2pif。可以通过将曲线拟合到一组中间值然后从曲线的系数生成估计值的最小二乘法来提高精度。

5. 发明授权

US07395162B2 Load coil detection and localization 有权
标题翻译：负载线圈检测和定位
公开(公告)号：US07395162B2
公开(公告)日：2008-07-01
申请号：US11276599
申请日：2006-03-07
申请人： Antoni Fertner , Fredrik Lindqvist , Per Ola Börjesson
发明人： Antoni Fertner , Fredrik Lindqvist , Per Ola Börjesson
IPC分类号： G06F19/00
CPC分类号： H04M3/306 , H04M3/2209
摘要： A method is described herein that can be used to detect the presence of a load coil within a transmission line. The method can also be used to determine the number of load coil(s) present within the transmission line. In addition, the method can be used to determine the distance to the first load coil.
摘要翻译：本文描述了可用于检测传输线内的负载线圈的存在的方法。该方法还可以用于确定传输线内存在的负载线圈的数量。此外，该方法可用于确定到第一负载线圈的距离。

6. 发明申请

US20120221271A1 Method and Arrangement in a Telecommunication System for Estimating Frequency Dependent Resistance 有权
标题翻译：用于估计频率依赖电阻的电信系统中的方法和布置
公开(公告)号：US20120221271A1
公开(公告)日：2012-08-30
申请号：US13504261
申请日：2009-12-22
申请人： Miguel Berg , Daniel Cederholm , Per Ola Börjesson
发明人： Miguel Berg , Daniel Cederholm , Per Ola Börjesson
IPC分类号： G06F19/00
CPC分类号： H04B3/48
摘要： Method and arrangement in a telecommunication system for estimating frequency dependent resistance of a transmission line. Insertion loss per length unit of the transmission line at a first frequency is determined. Thereupon a first resistance per length unit based on the determined insertion loss per length unit of the transmission line is calculated. Effective resistance per length unit at a second frequency based on the calculated first resistance is calculated. The calculated effective resistance could be used when estimating the insertion loss for the second frequency and all frequencies of interest.
摘要翻译：用于估计传输线的频率相关电阻的电信系统中的方法和装置。确定在第一频率处的传输线的每个长度单位的插入损耗。因此，计算出基于传输线每长度单位确定的插入损耗的每长度单位的第一电阻。计算出基于计算出的第一电阻的第二频率下的长度单位的有效电阻。当估计第二频率和感兴趣的所有频率的插入损耗时，可以使用计算的有效电阻。

7. 发明申请

US20120163559A1 Method for Estimating Transmission Properties of a Telecommunications Transmission Line 有权
标题翻译：估计电信传输线传输特性的方法
公开(公告)号：US20120163559A1
公开(公告)日：2012-06-28
申请号：US13394392
申请日：2009-09-11
申请人： Antoni Fertner , Per Ola Börjesson , Daniel Cederholm
发明人： Antoni Fertner , Per Ola Börjesson , Daniel Cederholm
IPC分类号： H04B3/46
CPC分类号： H04B3/466
摘要： Transmission properties of a telecommunications transmission line may be estimated with improved accuracy by numerical solution for Γ of Zin·jω̂C=Γcoth(Γ). At least one curve is adapted to Γ solutions already obtained and a starting point for numerical solution is selected in dependence of the at least one curve and in dependence of an already obtained solution close in frequency. In a first frequency range, starting points for numerical solution may be calculated from a biquadratic equation. In a second frequency range, a line in the complex plane may be adapted to solutions already obtained and new starting points selected in dependence of the line and in dependence of the previous solution. In a third frequency range, two lines in the frequency plane may be adapted to solutions already obtained and new starting points selected in dependence of the lines.
摘要翻译：电信传输线路的传输特性可以通过＆Ggr的数值解决方案提高精度来估计; 的Zin·jωC=＆Ggr; coth（＆Ggr。）。至少有一条曲线适应于＆Ggr; 已经获得的解决方案和数值解的起点根据至少一条曲线选择，并且依赖于已经获得的频率接近的解。在第一个频率范围内，数值解的起始点可以从二次方程计算。在第二频率范围中，复平面中的线可以适应已经获得的解和根据线选择并且依赖于先前解的新起始点。在第三频率范围内，频率平面中的两条线可以适应已经获得的解和根据线选择的新起点。

8. 发明授权

US08065100B2 Method and a system for cable or subscriber loop investigation performing loop topology identification 有权
标题翻译：用于电缆或用户环路调查的方法和系统执行环路拓扑识别
公开(公告)号：US08065100B2
公开(公告)日：2011-11-22
申请号：US12162665
申请日：2006-01-31
申请人： Fredrik Lindqvist , Antoni Fertner , Per Ola Börjesson
发明人： Fredrik Lindqvist , Antoni Fertner , Per Ola Börjesson
IPC分类号： G01R11/16 , G01R5/28 , G01R29/08 , G01N35/00
CPC分类号： H04M3/306 , H04B3/46
摘要： A system and method for using loop topology identification to investigate a transmission line having a plurality of cable segments. At a measurement plane for each segment, a probing signal is transmitted into the cable. A reflected signal is detected, and an equivalent total input impedance is calculated. The system iteratively calculates the distance between the measurement planes as well as the length, characteristic impedance, and the propagation constant of each segment. A model is used to calculate the respective equivalent input impedance of each segment using the calculated characteristic impedance, propagation constant, and length of the preceding segment. The equivalent total input impedance is then calculated from the iteratively calculated segment values.
摘要翻译：一种用于使用环路拓扑识别来研究具有多个电缆段的传输线的系统和方法。在每个段的测量平面，探测信号被传输到电缆中。检测反射信号，并计算等效的总输入阻抗。系统迭代地计算测量平面之间的距离以及每段的长度，特征阻抗和传播常数。使用模型使用计算的特征阻抗，传播常数和前一段的长度来计算每个段的相应等效输入阻抗。然后从迭代计算的段值计算等效的总输入阻抗。

9. 发明授权

US09470729B2 Transmission line parameter determination 有权
标题翻译：传输线参数确定
公开(公告)号：US09470729B2
公开(公告)日：2016-10-18
申请号：US14110215
申请日：2011-04-08
申请人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
发明人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
IPC分类号： G01R27/02 , H04B3/466
CPC分类号： G01R27/02 , H04B3/466
摘要： The present disclosure relates to determining parameters in a model of a transmission line. For determining the parameters, reflection coefficient defining data and the total capacitance of the transmission line are obtained. Further, true reflection coefficients obtained through the reflection coefficient defining data are applied in an objective function for the line. The objective function for the line is a sum of error signals and each error signal is the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient. Further, the objective function is minimized by utilizing gradients of the objective function with respect to the transmission line parameters to be determined. A capacitive length is employed and at least two further transmission line parameters are determined as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model.
摘要翻译：本公开涉及确定传输线的模型中的参数。为了确定参数，获得反射系数定义数据和传输线的总电容。此外，通过反射系数定义数据获得的真实反射系数被应用于该行的目标函数中。线的目标函数是误差信号的和，每个误差信号是反射系数的模型值和相应的真实反射系数之间的差。此外，通过利用待确定的传输线参数的目标函数的梯度来最小化目标函数。使用电容长度，并且将至少两个另外的传输线参数确定为传输线模型的基本电阻传输线参数，基本电容传输线参数和基本感应传输线参数的组合。

10. 发明授权

US08385510B2 Method for transmission line analysis 有权
标题翻译：传输线分析方法
公开(公告)号：US08385510B2
公开(公告)日：2013-02-26
申请号：US13129555
申请日：2009-11-27
申请人： Miguel Berg , Daniel Cederholm , Klas Ericson , Per Ola Börjesson
发明人： Miguel Berg , Daniel Cederholm , Klas Ericson , Per Ola Börjesson
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04B3/46 , H04M3/306 , H04M11/062
摘要： A FDR SELT measurement is made in a stop band of a DSL band plan, using a PSD allowed by the PSD mask. Further measurements may also be made in an adjacent pass band and further bands, and the results combined to create a wide-band measurement result. When transformed into the time domain (e.g. by inverse Fourier transform to produce the line impulse response) greater resolution in time (and hence greater spatial resolution) is achieved. In order to compensate for AGC calibration errors measurements using different AGC steps may be scaled to fit smoothly to each other. If measurements overlap, measurement results in the region of overlap may be combined in various ways to limit the influence of noise and to create a smooth transition from one measurement to the next.
摘要翻译：使用PSD掩模允许的PSD，在DSL频段计划的停止频段进行FDR SELT测量。还可以在相邻通带和另外的带中进行进一步测量，并且结果组合以产生宽带测量结果。当变换到时域（例如通过逆傅立叶变换产生线脉冲响应）时，可以获得更高的时间分辨率（因此更大的空间分辨率）。为了补偿AGC校准误差，使用不同AGC步长的测量可以被缩放以相互平滑地相配合。如果测量重叠，重叠区域中的测量结果可以以各种方式组合，以限制噪声的影响并创建从一个测量到下一个测量的平滑过渡。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式