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1. 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。

2. 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。

3. 发明申请

US20090219395A1 Measurement and Display for Video Peak Jitter with Expected Probability 审中-公开
标题翻译：视频峰值抖动的测量和显示具有预期的概率
公开(公告)号：US20090219395A1
公开(公告)日：2009-09-03
申请号：US12065243
申请日：2006-08-28
申请人： Daniel G. Baker , Barry A. McKibben
发明人： Daniel G. Baker , Barry A. McKibben
IPC分类号： H04N17/00
CPC分类号： H04N17/00 , G01R31/31709
摘要： A system and method are provided to generate a histogram of jitter peak values within histogram hardware. The histogram is then transferred to a jitter analyzer, which is implemented in either dedicated hardware or software running on a general purpose processor. The jitter analyzer calculates a cumulative distribution function (CDF) array and a complementary cumulative distribution function (CCDF) array based upon the histogram, and determines the peak jitter values based upon a probability value.
摘要翻译：提供了一种系统和方法来生成直方图硬件中抖动峰值的直方图。然后将直方图传输到抖动分析器，抖动分析器以通用处理器上运行的专用硬件或软件实现。抖动分析器基于直方图计算累积分布函数（CDF）阵列和互补累积分布函数（CCDF）阵列，并且基于概率值确定峰值抖动值。

4. 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）。

5. 发明授权

US08436939B2 AV delay measurement and correction via signature curves 有权
标题翻译：通过签名曲线进行AV延迟测量和校正
公开(公告)号：US08436939B2
公开(公告)日：2013-05-07
申请号：US12892836
申请日：2010-09-28
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： H04N9/475
CPC分类号： H04N17/004
摘要： Embodiments of the present invention provide systems and methods for non-invasive, “in-service” AV delay detection and correction. These systems and methods do not modify the audio signal or the video signal, nor do they rely on any metadata to be carried with the audio signal or the video signal via the distribution path. Instead, agents located at various points along the distribution path generate very small signature curves for the audio signal and the video signal and distribute them to a manager via a separate data path other than the distribution path. The manager calculates a measured AV delay caused by the distribution path based on these signature curves, and then optionally corrects the measured AV delay by adjusting an in-line delay in the distribution path.
摘要翻译：本发明的实施例提供了用于非侵入式“在役”AV延迟检测和校正的系统和方法。这些系统和方法不修改音频信号或视频信号，也不依赖于通过分配路径与音频信号或视频信号携带的任何元数据。相反，位于沿着分布路径的各个点处的代理产生用于音频信号和视频信号的非常小的签名曲线，并且经由分配路径以外的单独的数据路径将它们分发给管理者。管理者基于这些签名曲线计算由分配路径引起的测量的AV延迟，然后通过调整分配路径中的在线延迟来可选地校正测量的AV延迟。

6. 发明授权

US07610161B2 Wander gamut display 失效
标题翻译：漫游色域显示
公开(公告)号：US07610161B2
公开(公告)日：2009-10-27
申请号：US10428361
申请日：2003-05-01
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： G01R13/00
CPC分类号： H04N17/00
摘要： A wander gamut display for perturbation analysis is created by determining from a periodic input data signal and a reference clock a frequency offset and frequency drift rate for the input signal. The frequency offset and frequency drift rate are input to respective orthogonal axes of a Cartesian display together with a wander limit bounding box that defines the wander gamut. Values that fall outside the bounding box on the display indicate wander that may result in data errors.
摘要翻译：通过从周期性输入数据信号和参考时钟确定输入信号的频率偏移和频率漂移率来创建用于扰动分析的漂移色域显示。频率偏移和频率漂移率与定义漫游色域的漂移极限边界框一起输入到笛卡尔显示器的各个正交轴。落在显示屏上的边框外的值指示可能导致数据错误的漂移。

7. 发明申请

US20090144554A1 Two-way authentication with non-disclosing password entry 审中-公开
标题翻译：双向认证与非公开密码输入
公开(公告)号：US20090144554A1
公开(公告)日：2009-06-04
申请号：US12215938
申请日：2008-07-01
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： H04L9/32
CPC分类号： G06F21/445 , G06F21/31 , G06F21/36 , G06F2221/2119 , G07C9/00142 , G07F7/10 , G07F7/1041 , H04L63/083 , H04L63/0869
摘要： A method of two-way authentication between a user and a known host using a non-disclosing password entry system generates a matrix of characters having a random characteristic with random characteristics being selected from a set of custom symbols, pictures or patterns (rather than alpha-numeric characters) that only the user recognizes. When the user sets up an account with the known host, a subset of these characteristics is predetermined for use specifically by the user. One or more of these may additionally be used in the user's PIN or password for easy memorization, allowing the user to first authenticate the log-in screen before the user enters the PIN for user authentication to the known host. Alternatively, randomized alpha-numeric characters may be used, but with a predefined grouping or subset of the characters in a predefined position on the initial character matrix presentation. If the user doesn't see the predefined special characters or figures in the character matrix, or the particular alpha-numeric subset in the character matrix, then the log-in screen is recognized as a fake.
摘要翻译：使用非公开密码输入系统的用户和已知主机之间的双向认证的方法生成具有随机特征的字符矩阵，其随机特征是从一组自定义符号，图片或图案中选择（而不是α - 数字字符），只有用户识别。当用户使用已知主机建立帐户时，这些特征的子集是预先确定的，以供用户专门使用。这些中的一个或多个可以额外地用于用户的PIN或密码中以便于记忆，允许用户在用户输入用于认证主机的用户身份验证的PIN之前首先验证登录屏幕。或者，可以使用随机的字母数字字符，但是在初始字符矩阵呈现中的预定位置中的字符的预定义分组或子集。如果用户没有看到字符矩阵中的预定义的特殊字符或图形，或字符矩阵中的特定字母数字子集，则登录屏幕被识别为假。

8. 发明授权

US06822510B1 Power-off, loop-through return-loss with negative capacitance 失效
标题翻译：关断，带负电容的环路回输损耗
公开(公告)号：US06822510B1
公开(公告)日：2004-11-23
申请号：US10428670
申请日：2003-05-01
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： H03F345
CPC分类号： H03F1/565 , H03F1/14
摘要： An improved power-off, loop-through return-loss characteristic for a current feedback operational amplifier is provided by adding a positive feedback capacitor between the input and output of the operational amplifier. The positive feedback capacitor results in a negative capacitance input impedance for the operational amplifier that cancels stray capacitances at the input.
摘要翻译：通过在运算放大器的输入和输出之间增加正反馈电容器来提供电流反馈运算放大器的改进的关断环路回损特性。正反馈电容导致运算放大器的负电容输入阻抗，从而消除输入端的杂散电容。

9. 发明授权

US08754988B2 Blur detection with local sharpness map 有权
标题翻译：模糊检测与局部锐度图
公开(公告)号：US08754988B2
公开(公告)日：2014-06-17
申请号：US12976729
申请日：2010-12-22
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： H04N5/21 , H04N5/14
CPC分类号： H04N5/21 , G06T7/0002 , G06T7/13 , G06T2207/30168 , H04N5/14 , H04N17/004
摘要： A single-ended blur detection probe and method with a local sharpness map for analyzing a video image sequence uses two sets of edge filters, one for “fast edges” and the other for “slow edges.” Each set of edge filters includes a horizontal bandpass filter, a vertical bandpass filter and a pair of orthogonal diagonal filters where the frequency response of the fast edge filters overlap the frequency response of the slow edge filters. The video image sequence is input to each filter of each set, and the output absolute values are combined with weighting factors to produce a slow edge weighted sum array and a fast edge weighted sum arra. The respective weighted sum arrays are then decimated to produce a slow edge decimated array and a fast edge decimated array. The ratio of the maximum difference value between the decimated arrays and the maximum value from the fast edge decimated array, weighted by an appropriate factor, produces a localized maximum sharpness value, the log of which produces a dimensionless blur value.
摘要翻译：具有用于分析视频图像序列的局部锐度图的单端模糊检测探针和方法使用两组边缘滤波器，一组用于“快速边缘”，另一组用于“慢边缘”。每组边缘滤波器包括水平带通滤波器，垂直带通滤波器和一对正交对角线滤波器，其中快速边缘滤波器的频率响应与慢边滤波器的频率响应重叠。将视频图像序列输入到每一组的每个滤波器，并且将输出绝对值与加权因子组合以产生慢边加权和阵列和快速边缘加权和arra。然后将相应的加权和阵列抽取以产生慢边抽取阵列和快速边缘抽取阵列。抽取的阵列之间的最大差值与由快速边缘抽取阵列的最大值的比值由适当的因子加权，产生局部最大锐度值，其日志产生无量纲的模糊值。

10. 发明授权

US07071965B2 Artistic color gamut display 有权
标题翻译：艺术色域显示
公开(公告)号：US07071965B2
公开(公告)日：2006-07-04
申请号：US10428883
申请日：2003-05-01
申请人： Daniel G. Baker
发明人： Daniel G. Baker
IPC分类号： H04N17/02
CPC分类号： H04N17/02
摘要： An artistic color gamut display is generated by obtaining maximum and minimum values for an RGB signal. The maximum and minimum values are used as X and Y values for an XY plot. A triangular graticule, or Spearhead display, is generated for the XY plot having a first side representing Lightness, a second side representing saturation and a third side representing Value. The area within the Spearhead display represents valid color gamut. The Spearhead display may be combined with more traditional displays, such as Vector or Arrowhead displays, to provide a completely three-dimensional analysis of the RGB signal in terms of the artistic parameters of Hue, Saturation and Value or Lightness.
摘要翻译：通过获得RGB信号的最大值和最小值来产生艺术色域显示。最大值和最小值用作XY图的X和Y值。对于具有表示亮度的第一面，表示饱和的第二面和表示值的第三面的XY图生成三角形刻度或矛头显示。 “矛头”显示中的区域表示有效的色域。矛头显示器可以与更传统的显示器（例如矢量或箭头显示器）相结合，以根据色相，饱和度和值或亮度的艺术参数提供对RGB信号的完全三维分析。

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