公开(公告)号：US20180219651A1

公开(公告)日：2018-08-02

申请号：US15460672

申请日：2017-03-16

Applicant: INNERTRON, INC.

Inventor： Jae Hyun JU ,  Jun Ho KANG ,  Hak Rae CHO ,  Moon Bong KO

IPC: H04L1/20

CPC classification number: H04L1/206 ,  H04L1/244 ,  H04L1/247

Abstract: A modular PIM analyzer includes: a first signal amplification module provided with a first signal generator for generating a first frequency signal under control of a first MCU, and a first power amplifier for generating a first amplified frequency signal through the amplification of the first frequency signal under control of a first ALC circuit; a second signal amplification module provided with a second signal generator for generating a second frequency signal under control of a second MCU, and a second power amplifier for generating a second amplified frequency signal through the amplification of the second frequency signal under control of a second ALC circuit; and a triplexer module for extracting a test frequency signal using the first amplified frequency signal and the second amplified frequency signal, transmitting the test frequency signal to a device under test, and receiving a PIM signal being reflected from the device under test

公开(公告)号：US20150098538A1

公开(公告)日：2015-04-09

申请号：US14507702

申请日：2014-10-06

Applicant: QUALCOMM Incorporated

Inventor： George Alan Wiley ,  Chulkyu Lee

IPC: H04L7/04

CPC classification number: H04L7/042 ,  H04L1/205 ,  H04L1/206 ,  H04L1/247 ,  H04L5/20 ,  H04L25/0272 ,  H04L25/0282 ,  H04L25/0294 ,  H04L25/0298 ,  H04L25/4917

Abstract: System, methods and apparatus are described that facilitate tests and measurements related to multi-wire, multi-phase communications links. Information is transmitted in N-phase polarity encoded symbols and an eye pattern corresponding to the symbols may be generated such that the symbols are aligned with a trigger for each symbol that corresponds to a clock edge used to sample the symbols. The eye pattern may be used to determine sufficiency of setup times in the communication links and other such characteristics defining a communications channel capabilities.

Abstract translation: 描述了便于与多线，多相通信链路相关的测试和测量的系统，方法和装置。 信息以N相极性编码符号发送，并且可以生成与符号相对应的眼图，使得符号与对应于用于采样符号的时钟边缘的每个符号的触发对齐。 眼图可以用于确定通信链路中的建立时间的充分性以及定义通信信道能力的其它这样的特性。

公开(公告)号：US5623515A

公开(公告)日：1997-04-22

申请号：US269809

申请日：1994-06-30

Applicant: Kenichi Seto

Inventor： Kenichi Seto

IPC: H04L29/08 ,  G06F13/38 ,  G06F13/42 ,  G06F15/16 ,  H04L1/24 ,  H04L25/40 ,  H04L29/12 ,  H04B3/00

CPC classification number: H04L25/40 ,  G06F13/423 ,  H04L1/247

Abstract: A data communication system comprises a main device with a first microcomputer and an operating device with a second microcomputer. The devices are connected to each other by a first wire and by a second wire. In addition to that, input interrupt terminals of both devices are connected to the second wire. One device starts the sending of data by pulling the second wire to a first level, the detection of this by the other device is signalled back via the first wire and both devices then start an internal timer. When a predetermined time, corresponding to a data item to be sent, has lapsed the sending device pulls the second line again to the first level. This is detected by the other device, which measures the lapsed time and which uses this time to determine the data item sent by consulting preset conversion rules, that give a relation between time and a data element.

Abstract translation: 数据通信系统包括具有第一微型计算机的主装置和具有第二微型计算机的操作装置。 设备通过第一线和第二线彼此连接。 除此之外，两个设备的输入中断端子都连接到第二根线。 一个设备通过将第二个线拉到第一个电平来开始发送数据，另一个设备的检测通过第一个线路发出信号，然后两个设备启动一个内部定时器。 当与要发送的数据项相对应的预定时间已经过去时，发送装置将第二行再次拉到第一级。 这是由其他设备检测到的，该设备测量经过的时间，并且通过此时间来确定通过咨询预设转换规则发送的数据项，这些数据项给出了时间和数据元素之间的关系。

公开(公告)号：US5473329A

公开(公告)日：1995-12-05

申请号：US378788

申请日：1995-01-26

Applicant: Dev V. Gupta ,  Kyung-Yeop Hong

Inventor： Dev V. Gupta ,  Kyung-Yeop Hong

IPC: H04L1/24 ,  H03M5/12

CPC classification number: H04L1/247

Abstract: Loop Performance Monitoring (LPM) for DDS loops is described. Even though DDS loops have Intentional Bipolar Violations (BPVs), a Loop Coding Violations (LCVs) detection strategy based on further processing of BPVs is described. By monitoring LCVs a local loop terminating device can determine Bit Error Rate (BER).A system is described by which an Office Channel Unit (OCU) can process LCV information to determine signal quality of the signal over the incoming local loop. If the signal quality falls below a certain threshold, the OCU can cut the loop off from the DDS circuit and send control codes into the network.A system is also described where a Network Interface Unit (NIU) with the LPM system communicates incoming LCV information to the OCU using low speed signalling over the simplex path between the transmit and receive pairs. The OCU monitors incoming LCVs as well, and thus has the information necessary to determine bi-directional BER performance.

公开(公告)号：US5285459A

公开(公告)日：1994-02-08

申请号：US755761

申请日：1991-09-06

Applicant: Yuzo Okuyama ,  Kazuo Sato ,  Yamato Tachibana ,  Ryuhei Motono ,  Kazuo Takeoka

Inventor： Yuzo Okuyama ,  Kazuo Sato ,  Yamato Tachibana ,  Ryuhei Motono ,  Kazuo Takeoka

IPC: H04L25/02 ,  H03M5/18 ,  H04L1/24 ,  H04L25/49 ,  G06F11/00 ,  H03M5/06 ,  H03M13/00

CPC classification number: H04L25/4925 ,  H03M5/18 ,  H04L1/247

Abstract: An HDB3 code violation detector includes a converting part for receiving positive polarity data and negative polarity data from a PCM line and for converting an HDB3 code received via the PCM line into an NRZ signal, and a first judging part receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal is NRZ "1" and for outputting a judgement result. In addition, the detector includes a second judging part receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has a maximum of three consecutive NRZ "0"s and for outputting a judgement result. Further, the detector includes a third judging part receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has at least four consecutive NRZ "0"s and for outputting a judgement result, and a detecting part for detecting a code violation of the HDB3 code based on the judgement results of the first, second and third judging parts.

Abstract translation: HDB3代码违规检测器包括：转换部件，用于从PCM线路接收正极性数据和负极性数据，并将用于将经由PCM线路接收的HDB3代码转换为NRZ信号，以及接收正极性数据的第一判断部件， 负极性数据和NRZ信号，用于在NRZ信号为NRZ“1”时判断从转换部分接收到的NRZ信号的模式是否可能，并输出判断结果。 此外，检测器包括接收正极性数据，负极性数据和NRZ信号的第二判断部分，用于当NRZ信号具有最大值时判断从转换部分接收的NRZ信号的模式是否可能 的三个连续的NRZ“0”并输出判断结果。 此外，检测器包括接收正极性数据，负极性数据和NRZ信号的第三判断部分，用于当NRZ信号具有至少四个时，判断从转换部分接收的NRZ信号的模式是否可能 连续NRZ“0”，并输出判断结果，以及检测部，根据第一，第二，第三判断部的判定结果检测HDB3码的代码违例。

公开(公告)号：US4402084A

公开(公告)日：1983-08-30

申请号：US284987

申请日：1981-07-20

Applicant: Hans G. Jungmeister

Inventor： Hans G. Jungmeister

IPC: H04L1/24 ,  H04L25/24 ,  H04L25/66

CPC classification number: H04L25/242 ,  H04L1/247

Abstract: For operational monitoring in PCM links, when a redundant code is used, the possibility is employed of establishing faults by violations of the code rule. In the recoding of the transmission signals in intermediate regenerators of the transmission link, it is necessary to provide a code rule violation checking device for each individual regenerator, which results in an increase in the expense in the regenerators. The code rule violation checking device disclosed is included in the pulse regenerator so that only one additional RS flip-flop, two time delay elements and two gate arrangements are necessary for this purpose. The invention may be employed in PCM links having transmission signals represented in the AMI code and, in particular, in transmission links employing element speeds of a few hundred Mbit/s.

Abstract translation: 对于PCM链路中的操作监控，当使用冗余代码时，采用违反代码规则来建立故障的可能性。 在传输链路的中间再生器中的传输信号的重新编码中，需要为每个单独的再生器提供代码规则违规检查装置，这导致再生器中的费用增加。 公开的代码规则违规检查装置被包括在脉冲再生器中，因此为此仅需要一个附加的RS触发器，两个延迟元件和两个门装置。 本发明可以用于具有在AMI代码中表示的传输信号的PCM链路中，特别是采用采用元数据速率为几百兆比特/秒的传输链路。

公开(公告)号：US4264972A

公开(公告)日：1981-04-28

申请号：US41405

申请日：1979-05-21

Applicant: Rainer Drullmann ,  Waldemar Fruhauf

Inventor： Rainer Drullmann ,  Waldemar Fruhauf

IPC: H04L1/00 ,  H04L1/24 ,  H04L25/49 ,  G06F11/00

CPC classification number: H04L1/247

Abstract: A digital signal constituted by a stream of bits is so encoded that its running digital sum (RDS) is confined to a range defined by predetermined lower and upper permissible limits, i.e., absent transmission error. Instead of using a forwards-backwards digital counter to monitor the RDS, with its associated expense and relatively high power consumption when high transmission rates are involved, use is made of an analog integrator which integrates the digital signal to be monitored and generates an analog RDS signal. A digit-error signal is generated when the analog RDS signal attempts to exceed a predetermined analog value corresponding to the upper permissible limit of the RDS or to fall below a predetermined analog value corresponding to the lower permissible limit of the RDS. When the analog RDS signal makes such an attempt it is positively limited to an analog value corresponding to the affected one of the lower and upper permissible values of the RDS and for so long as such attempt continues, this constituting an advantageous way of terminating the response of the error-detecting system to the detected digit error.

Abstract translation: 由比特流构成的数字信号被如此编码，使得其运行数字和（RDS）被限制在由预定的下限和上限许可限定的范围内，即没有传输误差。 而不是使用前向后向数字计数器来监视RDS，具有相关费用和涉及高传输速率时的相对较高的功耗，所以使用的是一个模拟积分器，它将要监控的数字信号进行积分，并产生模拟RDS 信号。 当模拟RDS信号试图超过与RDS的允许上限上限相对应的预定模拟值或者低于对应于RDS允许下限的预定模拟值时，产生数字误差信号。 当模拟RDS信号进行这样的尝试时，它肯定地限于对应于RDS的下限和上限容许值中的受影响的一个的模拟值，并且只要这种尝试继续，这构成终止响应的有利方式 的错误检测系统到检测到的数字错误。

公开(公告)号：US4086566A

公开(公告)日：1978-04-25

申请号：US742168

申请日：1976-11-15

Applicant: Adam Lender

Inventor： Adam Lender

IPC: H04L1/24 ,  G06F11/00

CPC classification number: H04L1/247

Abstract: A modified duobinary signal is separated into two (odd and even) pulse trains, each of which is representative of a bipolar pulse train. Each representative bipolar pulse train has a bit rate one-half that of the modified duobinary signal. Violations of the modified duobinary coding rules appear as violation of the bipolar coding rules. The bipolar violations which occur are detected separately for the odd and even pulse trains. The detected errors are read into an error combiner and are read out serially at the original modified duobinary bit rate.

Abstract translation: 修正的双二进制信号被分成两个（奇数和偶数）个脉冲序列，每个脉冲串代表双极脉冲串。 每个代表性的双极脉冲串具有比修正的二进制信号的二分之一的比特率。 违反修改的二进制编码规则似乎违反了双极编码规则。 对于奇数和偶数脉冲串分别检测发生的双极违例。 将检测到的错误读入错误组合器，并以原始修改的二进制比特率串行读出。

公开(公告)号：US4053723A

公开(公告)日：1977-10-11

申请号：US686561

申请日：1976-05-14

Applicant: Juho Arras ,  Mats Orjan Mattsson ,  Walter Herbert Erwin Widl

Inventor： Juho Arras ,  Mats Orjan Mattsson ,  Walter Herbert Erwin Widl

IPC: H04L1/24 ,  H04L25/08 ,  H04B3/46

CPC classification number: H04L1/247 ,  H04L25/08

Abstract: A method and an apparatus for measuring the bit error frequency in a cable caused by crosstalk from at least one disturbing pair to a disturbed pair at transmission of a 3-level coded PCM signal utilizes the fact that a PCM signal transferred on a pair and the disturbances superimposed on this signal by crosstalk from other pairs are mathematically uncorrelated. The amplitudes of the disturbances measured on the disturbed pair are sampled after equalization in a regenerator with a sampling frequency which equals the bit time frequency of the PCM signal intended for transmission on the pair. The number of detected sampling values whose magnitude exceeds a certain threshold value is a function of the estimated bit error frequency.

公开(公告)号：US4001525A

公开(公告)日：1977-01-04

申请号：US624507

申请日：1975-10-21

Applicant: Allan Kendrick Edwards

Inventor： Allan Kendrick Edwards

IPC: H04L1/24 ,  H04B1/60

CPC classification number: H04L1/247

Abstract: A repeater connected in a telecommunication line receiving a pseudorandom digital signal from the line is tested in-line by superimposing a noise signal of steadily increasing amplitude on the digital signal and measuring the amplitude of the noise signal at an output of the source of the noise signal when the amplitude of the noise signals produces a predetermined number of errors in the digital signal at the output of the repeater.