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公开(公告)号：JP2003256296A
公开(公告)日：2003-09-10
申请号：JP2003039294
申请日：2003-02-18
Applicant: AGILENT TECHNOLOGIES INC
Inventor： MANLEY DOUGLAS R , BARFORD LEE A
Abstract: PROBLEM TO BE SOLVED: To provide a method for diagnosing data transfer faults by using constraints. SOLUTION: In the method for diagnosing faults in a system under test (SUT), a representative method includes a step for identifying at least some portions of the data transmission paths of the SUT capable of introducing errors in data transfer, a step for providing constraints defining relationships of at least some of the portions of the data transmission paths, and a step for diagnosing the SUT with respect to the constraints. Systems, computer- readable media and other methods are also provided. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2004007466A
公开(公告)日：2004-01-08
申请号：JP2003066522
申请日：2003-03-12
Applicant: AGILENT TECHNOLOGIES INC
Inventor： MANLEY DOUGLAS R , BARFORD LEE A
Abstract: PROBLEM TO BE SOLVED: To provide a failure simulation which can adapt to complex commercial use and which is for diagnosing intermittent failures. SOLUTION: A method for diagnosing data packet transfer failures in a system under test (SUT) 110 defining data transfer paths in which data packets are transferred comprises a step of identifying at least some portions among the transfer paths having potentials for causing errors in the data packet transfer, a step of setting limiting conditions defining data packet transfer relations with at least some of the identified portions of the transfer paths, and a step of diagnosing the SUT relating to the limiting conditions. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2003087226A
公开(公告)日：2003-03-20
申请号：JP2002242894
申请日：2002-08-23
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BARFORD LEE A
IPC: H04L1/00 , G01R31/317 , G06F11/00 , G06F11/267
Abstract: PROBLEM TO BE SOLVED: To measure a bit error rate within minimum time. SOLUTION: Bit blocks are measured and the cumulative number of bit errors and a posterior cumulative distribution function (PCDF) are calculated in parallel concering the bit errors. Whether a bit error rate is smaller than a required bit error rate limit is determined by comparing the calculated value of the PCDF with a required value (probability). The measurement of bit blocks, the calculation of the cumulative value of related bit errors, the calculation of the PCDF and determination based on these measured values are continued until any one of three events is detected. The three events are an event (1) that the bit error rate is smaller than the required bit error rate limit, an event (2) that the bit error rate is the required bit error rate or more, and an event (3) that the longest test time has elapsed. A test is stopped after detecting these three events.
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公开(公告)号：JP2007141227A
公开(公告)日：2007-06-07
申请号：JP2006297675
申请日：2006-11-01
Inventor： BARFORD LEE A
IPC: G08C15/00
CPC classification number: G01D21/00 , G06F17/141 , H04L43/12
Abstract: PROBLEM TO BE SOLVED: To provide a random sampling method for a sample having a time stamp formed to be used for spectrum estimation by a sensor connected to a network. SOLUTION: A sensor system comprises; a network device which forms the sample to which the time stamp is given; a sample timing module which seeks for restricted sample timing interval; and an operation node to communicate with the above network device. In the sensor system which is connected to a network, a sample to which the above time stamp is given is formed in a random sample time within restricted sample timing interval until a signal-to-noise ratio of the estimated spectrum from the sample to which the above time stamp is given realizes a target signal-to-noise ratio and is communicated to the above operation node. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：为具有形成为用于通过连接到网络的传感器进行频谱估计的时间戳的样本提供随机抽样方法。 传感器系统包括： 构成给定时间戳的样本的网络设备; 寻求限制采样定时间隔的采样定时模块; 以及与上述网络设备进行通信的操作节点。 在连接到网络的传感器系统中，在限制的采样定时间隔内以随机采样时间形成给定上述时间戳的样本，直到来自样本的估计频谱的信噪比 给出上述时间戳实现目标信噪比，并将其传送到上述操作节点。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2007089164A
公开(公告)日：2007-04-05
申请号：JP2006253020
申请日：2006-09-19
Inventor： BARFORD LEE A
IPC: H04L29/14
CPC classification number: G06F17/141
Abstract: PROBLEM TO BE SOLVED: To perform spectrum evaluation with accuracy. SOLUTION: A spectrum evaluation device includes: a computer processor 430; a memory 434; and a computer program 436 stored by the memory 434 and executed by the computer processor 430. The computer program includes a command. When the command is executed by the computer processor, a first sample set is selected from the data stream of time stamped samples so as to generate a combination sample set. Then, in order to combine with the first sample set continuously, a set of other time stamped samples is selected. Herein, a spectrum evaluation device is provided such that it selects a set of other time stamped samples repeatedly, until the measure of the signal to noise ratio concerning the spectrum evaluation of the combination sample set indicates the attainment of the target of signal to noise ratio. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：准确地进行频谱评估。 解决方案：频谱评估装置包括：计算机处理器430; 存储器434; 以及由存储器434存储并由计算机处理器430执行的计算机程序436.计算机程序包括命令。 当由计算机处理器执行命令时，从时间戳样本的数据流中选择第一样本集合，以便生成组合样本集合。 然后，为了与第一样本集连续地组合，选择一组其他时间戳样本。 这里，提供频谱评估装置，使得其重复地选择一组其他时间标记样本，直到关于组合样本集合的频谱评估的信噪比的测量指示达到信噪比的目标 。 版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2001318804A
公开(公告)日：2001-11-16
申请号：JP2001083806
申请日：2001-03-22
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BARFORD LEE A , SMITH DAVID R
Abstract: PROBLEM TO BE SOLVED: To provide a probable diagnostic engine for an assembly and for remote applicable task. SOLUTION: The diagnostic engine for a device equipped with plural components receives a model for applying the test result of the test of one group related with the device when at least one test fails and the level of comprehension of the test to the components of the device and information describing probable dependency between the tests, and the diagnostic engine is provided with a means for setting or designating the number N of the components which are likely to simultaneously become defective and a calculating means for calculating the likelihood of each component constituting a sub-set equipped with the size of not more than N to be any defective component. Thus, it is possible to provide the diagnostic engine in which the calculation is substantially accurate within a floating point calculation error range.
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公开(公告)号：WO2006076117A3
公开(公告)日：2007-02-01
申请号：PCT/US2005045278
申请日：2005-12-14
Applicant: AGILENT TECHNOLOGIES INC
Inventor： KHOCHE AJAY , TUFILLARO NICHOLAS B , JEFFERSON STANLEY T , BARFORD LEE A
CPC classification number: G01R31/319 , G01R31/31917 , G01R31/3193
Abstract: The model-based method tests compliance of production devices with the performance specifications of a device design. The production devices are manufactured in accordance with the device design by a manufacturing process. In the method, a simple model form based on the device design and the performance specifications is developed (212), a stimulus for testing the production devices is specified (214) and each production device is tested (220). The model form has a basis function and model form parameters for the basis function. The model form parameters are dependent on the manufacturing process and differ in value among the production devices. A production device is tested by measuring (222) the response of the production device to the stimulus; extracting (224), using the model form, the values of the model form parameters for the production device from the measured response and the stimulus; and checking (226) compliance of the production device with the performance specifications using the extracted values of the model form parameters.
Abstract translation: 基于模型的方法测试生产设备的符合性与设备设计的性能规格。 生产设备根据制造过程的设备设计制造。 在该方法中，开发了基于设备设计和性能规范的简单模型（212），指定了对生产设备进行测试的刺激（214），并对每个生产设备进行了测试（220）。 模型形式具有基函数和基函数的模型形式参数。 模型形式参数取决于制造过程，并且生产装置之间的价值不同。 通过测量（222）生产设备对刺激的响应来测试生产设备; 使用模型形式从测量的响应和刺激中提取（224）生产设备的模型形式参数的值; 以及使用提取的模型形式参数的值来检查（226）生产设备的符合性和性能规范。
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公开(公告)号：DE102008014623A1
公开(公告)日：2008-11-13
申请号：DE102008014623
申请日：2008-03-17
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BARFORD LEE A
IPC: G06F17/10
Abstract: A system processes discrete digital data according to a function, the discrete digital data including data values and time stamps, the time stamps being at non-uniform time intervals according to a time scale. The system comprises a processor having program instructions for implementing the function in terms of state space equations, using system design and data flow language software; inputting the discrete data into the implementation of the function; and outputting the result as an output discrete data stream of new data values and time stamps.
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公开(公告)号：DE102007049805A1
公开(公告)日：2008-05-08
申请号：DE102007049805
申请日：2007-10-17
Applicant: AGILENT TECHNOLOGIES INC
Inventor： BARFORD LEE A , HAMILTON BRUCE , VOOK DIETRICH WERNER
Abstract: Labeling asymmetric network cables for improved network clock synchronization. Time asymmetries between pairs in a network cable are identified and associated with individual cables. This time asymmetry information is used to improve clock synchronization according to the IEEE-1588 standard. The time asymmetry information may be stored in a database and associated with a serial number on the cable, or may be associated with the cable in human and/or machine readable form.
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公开(公告)号：DE102004019676A1
公开(公告)日：2005-06-02
申请号：DE102004019676
申请日：2004-04-22
Applicant: AGILENT TECHNOLOGIES INC
Inventor： LI JONATHAN QIANG , BARFORD LEE A
Abstract: Optimizing tester performance using Operating Characteristics curves. By modeling the Operating Characteristics of classifiers used in testing systems, tester performance is optimized. Classifiers are constructed using sample data. Operating Characteristic curves for each classifier are constructed, each Operating Characteristics curve representing a design alternative. The Operating Characteristic curves are combined with cost models from which design decisions may be made.
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