公开(公告)号：US20220191597A1

公开(公告)日：2022-06-16

申请号：US17549271

申请日：2021-12-13

Applicant: EXFO Inc.

Inventor： Sylvain NADEAU

IPC: H04N21/647 ,  H04N21/25

Abstract: A method includes obtaining a first Quality of Experience, QoE, measurement from a first content source; determining a QoE adjustment factor based on a predictive model; and adjusting the first QoE measurement using the QoE adjustment factor to obtain a second QoE measurement, the second QoE measurement reflects a QoE estimate from a second content source. The first content source can be a Content Delivery Network, CDN, entity, and the second content source is an Over-the-Top, OTT, content provider.

公开(公告)号：US20200059428A1

公开(公告)日：2020-02-20

申请号：US16543803

申请日：2019-08-19

Applicant: EXFO Inc.

Inventor： Sylvain NADEAU

IPC: H04L12/26 ,  H04L29/06

Abstract: A telecommunications network and service QoE assessment method and system comprising calculating a service score; calculating a network score; calculating a global score by combining the service score and the network score, the global score being for a quality of experience of a user on the network.

公开(公告)号：US20250078238A1

公开(公告)日：2025-03-06

申请号：US18813432

申请日：2024-08-23

Applicant: EXFO Inc.

Inventor： Jonathan PLANTE ,  Sylvain NADEAU ,  Justin M. WHATLEY

IPC: G06T7/00 ,  G01M11/00 ,  G06V10/24 ,  G06V10/26 ,  G06V10/764 ,  G06V10/774 ,  G06V10/82

Abstract: Systems and methods for inspecting optical fibers are provided. A method, according to one implementation, includes steps of obtaining an image of an end-face of an optical fiber; analyzing the image with a pre-trained neural network model to classify pixels therein as any of a defect, a scratch, or clean; aggregating the pixels based on proximity to obtain defect segments or scratch segments; characterizing these defect segments and scratch segments based on but not limited to size and location, and providing an output including any of the defect segments or scratch segments.

公开(公告)号：US20230060909A1

公开(公告)日：2023-03-02

申请号：US17891405

申请日：2022-08-19

Applicant: EXFO Inc.

Inventor： Jonathan PLANTE ,  Justin WHATLEY ,  Sylvain NADEAU

IPC: G01R31/3183 ,  G01R31/3185 ,  G06K9/62 ,  G06N20/00

Abstract: Example embodiments are disclosed of systems and methods for predicting failure probabilities of future product tests of a testing sequence based on outcomes of prior tests. Predictions are made by a machine-learning-based model (MLM) trained with a set of test-result sequence records (TRSRs) including test values and pass/fail indicators (PRIs) of completed tests. Within training epochs over the set, iterations are carried out over each TRSR. Each iteration involves sub-iterations carried out successively over test results of the TRSR. Each sub-iteration involves (i) inputting to the MLM values of a given test and those of tests earlier in the sequence while masking those later in the sequence, (ii) computing probabilities of test failures for the masked tests found later in the sequence than the given test, and (iii) applying the PFIs of test results later in the sequence than the given test as ground-truths to update parameters of the MLM.

公开(公告)号：US20150242294A1

公开(公告)日：2015-08-27

申请号：US14558773

申请日：2014-12-03

Applicant: EXFO INC.

Inventor： Dominic LAPIERRE ,  Bruno GIGUERE ,  Sylvain NADEAU ,  Gilles BUTEAU

IPC: G06F11/26 ,  G06F11/07

CPC classification number: G06F11/079 ,  G06F11/2294 ,  H04L43/50

Abstract: A test system and a related method, the system comprising a test processing agent and local test device(s). The test processing agent processes test measurements related to a network-under-test into test results. The test processing agent is decoupled from the network-under-test, e.g., by being reachable through a network communication link distinct from the network-under-test. The local test device comprises a firmware module and a network interface (NI) module. The firmware module depends on external instructions for initiating a test sequence on the network-under-test. The NI module comprises at least one physical port connectable to the network-under-test. The physical port is used for initiating the test sequence. The test processing agent receives the test measurements following the initiation of the test sequence by the local test device and allows access to the test results.

Abstract translation: 测试系统和相关方法，该系统包括测试处理代理和本地测试设备。 测试处理代理将与测试网络相关的测试测量转换为测试结果。 测试处理代理例如通过可以通过不同于被测网络的网络通信链路到达，从测试网络中解耦。 本地测试设备包括固件模块和网络接口（NI）模块。 固件模块取决于在被测网络上启动测试序列的外部指令。 NI模块包括至少一个可连接到被测网络的物理端口。 物理端口用于启动测试序列。 测试处理代理在本地测试设备启动测试序列后接收测试测量，并允许访问测试结果。

公开(公告)号：US20140301221A1

公开(公告)日：2014-10-09

申请号：US14212144

申请日：2014-03-14

Applicant: EXFO INC.

Inventor： Sylvain NADEAU ,  Sébastien Prieur ,  Dominic Lapierre

IPC: H04L12/26

CPC classification number: H04L43/50 ,  H04L43/12

Abstract: Method and test device for performing testing in a network conveying a plurality of traffic flows. At the test device, receiving traffic flows through a first interface of the test device on a first segment and forwarding the received plurality of traffic flows towards a second segment of the network through a second interface. At the test device, receiving a test request directed to an address of a test module and, in response to the test request, causing a sequence of proprietary traffic to be injected on the second segment. A reprogrammable test device comprising a networked test module at least in part on a reprogrammable partition of a programmable logic device and a reprogramming module, on a static partition of the programmable logic device, for reprogramming at least a portion of the reprogrammable partition implementing the test module in accordance with reprogramming data received at the test device.

Abstract translation: 用于在传送多个业务流的网络中执行测试的方法和测试设备。 在测试设备处，接收业务流经第一段的测试设备的第一接口，并通过第二接口将接收的多个业务流转发到网络的第二段。 在测试设备处，接收针对测试模块的地址的测试请求，并且响应于测试请求，导致专用流量序列被注入到第二段上。 一种可再编程测试装置，其包括至少部分地在可编程逻辑器件的静态分区上的可编程逻辑器件和重新编程模块的可重新编程分区的网络测试模块，用于重新编程实现测试的可重编程分区的至少一部分 模块根据在测试设备接收到的重新编程数据。