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1. 发明授权

US5488310A Return-loss detection for serial digital source 失效
标题翻译：串行数字源的回波损耗检测
公开(公告)号：US5488310A
公开(公告)日：1996-01-30
申请号：US294274
申请日：1994-08-22
申请人： Daniel G. Baker , Robert W. Parish , Scott E. Zink
发明人： Daniel G. Baker , Robert W. Parish , Scott E. Zink
IPC分类号： G01R27/02 , G01R27/06 , G01R27/28 , G01R31/02 , G01R17/00
CPC分类号： G01R27/06 , G01R31/02
摘要： A return-loss detector for a serial digital signal source uses a return-loss bridge circuit to exploit the broadband spectral characteristics of a serial digital signal from the signal source to monitor the termination conditions of a system being driven. A differential pair of serial digital signals from the source are input to the bridge circuit having a reference termination in one leg and the system termination in the other. A broadband detector is used at the output of the bridge circuit to generate an error signal, which is measured by a detector or metering circuit. The measured signal may be displayed as a value in dB or may be input to a comparator to provide an alarm or warning signal to an operator.
摘要翻译：用于串行数字信号源的回波损耗检测器使用回波损耗桥接电路来利用来自信号源的串行数字信号的宽带频谱特性来监视被驱动的系统的终止条件。来自源的差分对的串行数字信号被输入到具有一条支路中的参考端接和另一条中的系统端接的桥式电路。在桥接电路的输出端使用宽带检测器来产生由检测器或计量电路测量的误差信号。测量的信号可以以dB表示，或者可以输入到比较器，以向操作者提供警报或警告信号。

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. 发明授权

US06246439B1 Transparent embedment of data in a video signal 有权
标题翻译：数据在视频信号中的透明嵌入
公开(公告)号：US06246439B1
公开(公告)日：2001-06-12
申请号：US09527796
申请日：2000-03-17
申请人： Scott E. Zink , Daniel G. Baker
发明人： Scott E. Zink , Daniel G. Baker
IPC分类号： H04N708
CPC分类号： H04J13/00 , H04J13/0077 , H04L5/04 , H04N7/24
摘要： A method and apparatus for transparently embedding data into a video signal modulates a particular carrier frequency with a randomized pattern representing the data. The randomized pattern may be a combination of the data with the output from a pseudo-random binary sequence generator, or the data may be converted first into a bi-orthogonal pattern selected from among a plurality of such patterns and then randomized. The resulting modulated carrier frequency is then amplitude modulated based upon a human visual model so that the modulated carrier frequency amplitude is greater in areas of high image complexity and lower in areas of low image complexity. The subliminal data represented by the modulated carrier frequency is added to the video signal. At a decoder the data is recovered using appropriate correlation techniques by first filtering the video signal to increase the subliminal data component relative to the image component, then demodulating the data component to produce the data pattern, and then correlating the data pattern with the possible data patterns to identify the particular pattern and associated data word.
摘要翻译：用于将数据透明地嵌入到视频信号中的方法和装置利用表示数据的随机化模式来调制特定载波频率。随机化模式可以是数据与来自伪随机二进制序列生成器的输出的组合，或者可以将数据首先转换为从多个这样的模式中选择的双正交模式，然后随机化。然后，所得到的调制载波频率基于人类视觉模型进行幅度调制，使得调制载波频率振幅在高图像复杂度的区域中较大，而在低图像复杂度的区域中较低。由调制载波频率表示的临界数据被加到视频信号中。在解码器处，使用适当的相关技术来恢复数据，首先对视频信号进行滤波以相对于图像分量增加潜意识数据分量，然后解调数据分量以产生数据模式，然后将数据模式与可能的数据相关联用于识别特定模式和相关数据字的模式。

4. 发明授权

US06211919B1 Transparent embedment of data in a video signal 失效
公开(公告)号：US06211919B1
公开(公告)日：2001-04-03
申请号：US08829524
申请日：1997-03-28
申请人： Scott E. Zink , Daniel G. Baker
发明人： Scott E. Zink , Daniel G. Baker
IPC分类号： H04N708
CPC分类号： H04J13/00 , H04J13/0077 , H04L5/04 , H04N7/24
摘要： A method and apparatus for transparently embedding data into a video signal modulates a particular carrier frequency with a randomized pattern representing the data. The randomized pattern may be a combination of the data with the output from a pseudo-random binary sequence generator, or the data may be converted first into a bi-orthogonal pattern selected from among a plurality of such patterns and then randomized. The resulting modulated carrier frequency is then amplitude modulated based upon a human visual model so that the modulated carrier frequency amplitude is greater in areas of high image complexity and lower in areas of low image complexity. The subliminal data represented by the modulated carrier frequency is added to the video signal. At a decoder the data is recovered using appropriate correlation techniques by first filtering the video signal to increase the subliminal data component relative to the image component, then demodulating the data component to produce the data pattern, and then correlating the data pattern with the possible data patterns to identify the particular pattern and associated data word.

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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