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1. 发明授权

US08184747B2 Flexible timebase for EYE diagram 有权
标题翻译： EYE图灵活时基
公开(公告)号：US08184747B2
公开(公告)日：2012-05-22
申请号：US11274687
申请日：2005-11-14
申请人： Daniel G. Baker , Barry A. McKibben , Michael D. Nakamura , Evan Albright , Scott E. Zink , Michael S. Overton
发明人： Daniel G. Baker , Barry A. McKibben , Michael D. Nakamura , Evan Albright , Scott E. Zink , Michael S. Overton
IPC分类号： H04L27/00 , H04B3/46
CPC分类号： H04L1/205 , G01R13/0254 , G01R31/31711 , G01R31/31725 , G01R31/31727
摘要： A flexible timebase for eye diagrams uses a stable free running oscillator as a sample clock for equivalent time sampling of an input serial digital signal and of a reference signal derived from a subdivided recovered clock of the input serial digital signal. The reference signal samples are provided to a digital phase-locked loop that provides the flexible timebase to an eye pattern generator. The eye pattern generator accumulates the input serial digital signal samples at times corresponding to the reference signal samples to produce the eye diagram. A linear phase detector in the digital phase locked loop converts the reference signal samples to a complex signal using a Hilbert transform and then to a linear ramp of phase values using a CORDIC algorithm with arctangent lookup table. The digital phase-locked loop feedback is subtracted from the linear ramp to provide the input to the loop filter.
摘要翻译：眼图的灵活时基使用稳定的自由运行振荡器作为采样时钟，用于输入串行数字信号的等效时间采样和从输入串行数字信号的细分恢复时钟导出的参考信号。将参考信号样本提供给数字锁相环，其向眼图发生器提供灵活的时基。眼图发生器在对应于参考信号样本的时间累积输入的串行数字信号样本以产生眼图。数字锁相环中的线性相位检测器使用希尔伯特变换将参考信号样本转换为复信号，然后使用具有反正切查找表的CORDIC算法将其转换为相位值的线性斜坡。从线性斜坡中减去数字锁相环反馈，为环路滤波器提供输入。

2. 发明授权

US08355469B2 Flexible timebase for eye diagram 有权
标题翻译：眼图的灵活时基
公开(公告)号：US08355469B2
公开(公告)日：2013-01-15
申请号：US13178803
申请日：2011-07-08
申请人： Daniel G. Baker , Barry A. McKibben , Michael D. Nakamura , Evan Albright , Scott E. Zink , Michael S. Overton
发明人： Daniel G. Baker , Barry A. McKibben , Michael D. Nakamura , Evan Albright , Scott E. Zink , Michael S. Overton
IPC分类号： H04L27/00 , H03K9/00
CPC分类号： H04L1/205 , G01R13/0254 , G01R31/31711 , G01R31/31725 , G01R31/31727
摘要： A flexible timebase for eye diagrams uses a stable free running oscillator as a sample clock for equivalent time sampling of an input serial digital signal and of a reference signal, derived from a subdivided recovered clock of the input serial digital signal. The reference signal samples are provided to a digital phase-locked loop that provides the flexible timebase to an eye pattern generator. The eye pattern generator accumulates the input serial digital signal samples at times corresponding to the reference signal samples to produce the eye diagram. A linear phase detector in the digital phase locked loop converts the reference signal samples to a complex signal using a Hilbert transform and then to a linear ramp of phase values using a CORDIC algorithm with arctangent lookup table. A subtractor then subtracts the digital phase-locked loop feedback from the linear ramp to provide the input to the loop filter.
摘要翻译：眼图的灵活时基使用稳定的自由运行振荡器作为采样时钟，用于输入串行数字信号和从输入串行数字信号的细分恢复时钟导出的参考信号的等效时间采样。将参考信号样本提供给数字锁相环，其向眼图发生器提供灵活的时基。眼图发生器在对应于参考信号样本的时间累积输入的串行数字信号样本以产生眼图。数字锁相环中的线性相位检测器使用希尔伯特变换将参考信号样本转换为复信号，然后使用具有反正切查找表的CORDIC算法将其转换为相位值的线性斜坡。减法器然后从线性斜坡减去数字锁相环反馈，以将输入提供给环路滤波器。

3. 发明授权

US07642822B2 Analog phase-locked loop 有权
标题翻译：模拟锁相环
公开(公告)号：US07642822B2
公开(公告)日：2010-01-05
申请号：US12061905
申请日：2008-04-03
申请人： Daniel G. Baker , Gilbert A. Hoffman , Michael S. Overton , Barry A. McKibben
发明人： Daniel G. Baker , Gilbert A. Hoffman , Michael S. Overton , Barry A. McKibben
IPC分类号： H03L7/06
CPC分类号： H03L7/093
摘要： Aspects of the present invention are related, in general, to Type-III phase-locked loops. In particular, aspects of the present invention relate to analog Type-III phase-locked loop arrangements comprising at least two signal paths, wherein each signal path may correspond to a bandwidth partition and may be selected by a selector according to a bandwidth parameter value. According to one aspect of the present invention, a first signal path may correspond to a fast loop (wide closed-loop bandwidth), and a second signal path may correspond to a slow loop (narrow closed-loop bandwidth).
摘要翻译：通常，本发明的方面涉及III型锁相环。具体地，本发明的方面涉及包括至少两个信号路径的模拟III型锁相环装置，其中每个信号路径可以对应于带宽分区，并且可以根据带宽参数值由选择器选择。根据本发明的一个方面，第一信号路径可以对应于快速环路（宽闭环带宽），并且第二信号路径可以对应于慢环路（窄闭环带宽）。

4. 发明授权

US09699446B2 Test and measurement device, system, and method for providing synchronized measurement views 有权
公开(公告)号：US09699446B2
公开(公告)日：2017-07-04
申请号：US12754583
申请日：2010-04-05
申请人： Xinyu Zhu , Barry A. McKibben , Laurent A. Melling, Jr. , Kevin T. Ivers , Michael S. Overton
发明人： Xinyu Zhu , Barry A. McKibben , Laurent A. Melling, Jr. , Kevin T. Ivers , Michael S. Overton
IPC分类号： H04N17/00
CPC分类号： H04N17/00
摘要： Embodiments of the invention include a test and measurement device, system, and method for synchronizing measurement views and configuration parameters across multiple input channels or devices. A method includes receiving signals under test associated with multiple input channels of the test and measurement instrument or with multiple devices, selecting a measurement view of one input signal or device, receiving a synchronized view enable preference from a user control interface, and synchronizing the measurement view or configuration parameters of the other signals or devices with what was chosen on the first signal or device. A test and measurement instrument includes input terminals to receive the input signals, a user control interface to receive input from an operator, a display to provide measurement information about the input signals, and a synchronization control unit to synchronize measurement views and/or configuration parameters between the inputs or devices.

5. 发明授权

US06271879B1 Controlling and detecting alignment of composite video color frames 失效
标题翻译：控制和检测复合视频彩色帧的对齐
公开(公告)号：US06271879B1
公开(公告)日：2001-08-07
申请号：US09055074
申请日：1998-04-03
申请人： Michael S. Overton
发明人： Michael S. Overton
IPC分类号： H04N1700
CPC分类号： H04N17/02
摘要： An apparatus and method for controlling and detecting the alignment of a color frame phase from a composite analog video signal decodes the composite analog video signal to produce a component digital video signal and to generate a color frame signal that represents the start of each color frame for the composite analog video signal. Based upon the color frame signal a flag signal is inserted into the component digital video signal. The component digital video signal is captured by an analyzer based upon the flag signal so that the captured component digital video signal is in color frame phase with a stored reference component digital video signal. Preferably the stored reference component digital video signal represents a test sequence having an integer number of color frames plus or minus one video frame.
摘要翻译：一种用于控制和检测来自复合模拟视频信号的彩色帧相位对准的装置和方法，对复合模拟视频信号进行解码以产生分量数字视频信号，并产生一个颜色帧信号，该彩色帧信号表示每个色彩帧的开始，复合模拟视频信号。基于彩色帧信号，将标志信号插入到分量数字视频信号中。分量数字视频信号由分析器基于标志信号捕获，使得所捕获的分量数字视频信号与存储的参考分量数字视频信号处于彩色相位相位。优选地，存储的参考分量数字视频信号表示具有整数个彩色帧加或减一个视频帧的测试序列。

6. 发明授权

US5894324A Video alignment using a selected partial picture 失效
标题翻译：使用所选部分图片进行视频对齐
公开(公告)号：US5894324A
公开(公告)日：1999-04-13
申请号：US984220
申请日：1997-12-03
申请人： Michael S. Overton
发明人： Michael S. Overton
IPC分类号： H04N17/00
CPC分类号： H04N17/004
摘要： Alignment of two video sequences, one being a reference video sequence and the other being a processed video sequence corresponding to the reference video sequence, is performed using selected partial pictures from the reference video sequence. The reference video sequence is evaluated for portions that have maximum information content spatially and/or temporally to select the partial pictures, and the location and size of the partial pictures are stored together with the reference video sequence. The processed video sequence is then initially aligned to the reference video sequence by first finding the locations of features from the partial pictures in the processed video sequence to provide a coarse misalignment error between the two video sequence, and then using a correlation algorithm with a scanning window based on the size of the partial pictures to refine the misalignment error. Once the processed video sequence is aligned with the reference video sequence by using the refined misalignment error, measurement of the differences between the two sequences may be obtained as an indication of the amount of degradation of the processed video sequence with respect to the reference video sequence.
摘要翻译：使用来自参考视频序列的所选部分图像来执行两个视频序列的对准，一个作为参考视频序列，另一个是与参考视频序列相对应的经处理的视频序列。针对在空间上和/或时间上具有最大信息内容的部分来评估参考视频序列以选择部分图像，并且部分图像的位置和大小与参考视频序列一起存储。然后，经处理的视频序列首先对准参考视频序列，首先从经处理的视频序列中的部分图像中找出特征的位置，以在两个视频序列之间提供粗略的未对准误差，然后使用扫描相关算法窗口基于部分图片的大小来细化错位错误。一旦处理的视频序列通过使用精细化的对准误差与参考视频序列对准，则可以获得两个序列之间的差异的测量作为处理的视频序列相对于参考视频序列的劣化量的指示。

7. 发明授权

US5192915A Edge integrating phase detector 失效
标题翻译：边积分相位检测器
公开(公告)号：US5192915A
公开(公告)日：1993-03-09
申请号：US920180
申请日：1992-07-27
申请人： Alan E. Mathieu , Edward D. Wardzala , Michael S. Overton
发明人： Alan E. Mathieu , Edward D. Wardzala , Michael S. Overton
IPC分类号： H03L7/091
CPC分类号： H03L7/091
摘要： An edge integrating phase detector for a phase locked loop passes a portion of a sync edge of an input video signal as a sampled signal to an integrator in response to a gate pulse nominally centered on a timing reference point of the sync edge. The sampled signal has a positive and negative portion. The integrator produces from the sampled signal a control signal for a VCO that is proportional to the unbalance between the positive and negative portions. The gate pulse is generated from the output of the VCO as a function of the nominal period of the input video signal.
摘要翻译：响应于名义上以同步边缘的定时参考点为中心的门脉冲，用于锁相环的边沿积分相位检测器将输入视频信号的同步边缘的一部分作为采样信号传送到积分器。采样信号具有正和负部分。积分器从采样信号产生与正和负部分之间的不平衡成比例的VCO的控制信号。栅极脉冲是根据输入视频信号的标称周期的函数从VCO的输出产生的。

8. 发明授权

US5155439A Method of detecting and characterizing anomalies in a propagative medium 失效
标题翻译：在传播介质中检测和表征异常的方法
公开(公告)号：US5155439A
公开(公告)日：1992-10-13
申请号：US450120
申请日：1989-12-12
申请人： Dennis L. Holmbo , Wendelyn Gavett , Barry L. Rosenow , Michael S. Overton
发明人： Dennis L. Holmbo , Wendelyn Gavett , Barry L. Rosenow , Michael S. Overton
IPC分类号： G01M11/00 , G01R31/11
CPC分类号： G01R31/11 , G01M11/3145
摘要： A method for examining a propagative medium, such as a signal transmission cable, that requires the acquisition and examination of a minimum number of data points to determine the presence of an anomaly in the medium. When an anomaly is detected, its characteristics, such as loation, type and amount of loss are determined. The characteristics are then displayed. If the anomaly is a reflectionless loss, the region containing the anomaly is examined repetitively to determine its location and to improve the accuracy of its location measurement. With each successive level of examination, additional samples are collected within the region. The new samples are combined with the existing samples to reduce random noise in the data. Through this method the location of the anomaly is re-determined with greater accuracy.

9. 发明授权

US09723303B2 System for generating text defined test patterns 有权
公开(公告)号：US09723303B2
公开(公告)日：2017-08-01
申请号：US13171182
申请日：2011-06-28
申请人： Thomas E. Chabreck , Benjamin T. Humble , Michael S. Overton , Robert W. Parish
发明人： Thomas E. Chabreck , Benjamin T. Humble , Michael S. Overton , Robert W. Parish
IPC分类号： H04N17/04
CPC分类号： H04N17/04
摘要： Embodiments of the invention are directed to a system for generating video test pattern signals from definitions contained in a text-based definition file. The definition file allows the user to create generic definitions for test signals that can be interpreted to create test signals in a variety of formats, raster sizes, color spaces, sample structures, frame modes, and bit depths. A parametric generator uses one or more engines to then generate the desired test pattern from the definition file.

10. 发明授权

US08497909B2 Video timing display for multi-rate systems 有权
标题翻译：多速率系统的视频定时显示
公开(公告)号：US08497909B2
公开(公告)日：2013-07-30
申请号：US10885472
申请日：2004-07-01
申请人： Michael S. Overton , Xinyu Zhu , Scott A. Johnson
发明人： Michael S. Overton , Xinyu Zhu , Scott A. Johnson
IPC分类号： H04N17/02
CPC分类号： H04N17/00 , H04N5/073
摘要： A video timing display for multi-rate systems allows a user to quickly, easily and precisely measure the timing difference between video signals of different rates. A graphic display area within a raster display region provides a display of vertical and horizontal timing offsets of one video signal with respect to another video signal as a reference having a different frame rate. The graphic display area includes a reference indicator associated with the reference and timing indicators indicating the timing phases between the video signals, with one of the timing indicators being emphasized. A numeric display area may be provided adjacent the graphic display area to display the actual vertical and horizontal timing differences in appropriate units for the emphasized timing indicator relative to the reference indicator with a precision to one video clock cycle.
摘要翻译：用于多速率系统的视频定时显示允许用户快速，容易且精确地测量不同速率的视频信号之间的定时差。光栅显示区域内的图形显示区域提供相对于作为具有不同帧速率的参考的另一视频信号的一个视频信号的垂直和水平定时偏移的显示。图形显示区域包括与参考点相关联的参考指示符和指示视频信号之间的定时相位的定时指示器，其中一个定时指示器被强调。可以在图形显示区域附近提供数字显示区域，以相对于参考指示器以适当的单位显示实际的垂直和水平时间差，以精确到一个视频时钟周期。

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