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1.发明授权公开(公告)号：US06844858B2
公开(公告)日：2005-01-18
申请号：US10191720
申请日：2002-07-09
摘要： A method of wireless communication is disclosed, in which polarization diversity can be utilized to improve fading performance or to increase the capacity of the communication channel in a scattering environment. Complementary signal information is impressed upon, or derived from, corresponding electric and magnetic polarized field components of a transmitted or intercepted electromagnetic wave. Four, five, or even six independent signal channels can thereby be utilized for communication using a localized antenna arrangement.
摘要翻译： 公开了一种无线通信方法，其中可以利用极化分集来改善衰落性能或增加散射环境中通信信道的容量。 补充信号信息被压入或衍生自发射或截获的电磁波的对应的电和磁极化场分量。 因此，四个，五个或甚至六个独立的信号通道可以用于使用局部天线布置的通信。
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2.发明授权公开(公告)号：US06263306B1
公开(公告)日：2001-07-17
申请号：US09259644
申请日：1999-02-26
IPC分类号： G10L1104
摘要： A technique for obtaining an intermediate set of frequency dependant features from a speech signal for use in speech processing and in obtaining estimates of speech pitch. The technique utilizes multiple tapers derived from Slepian sequences to obtain a product of the speech signal and the Slepian functions. Multiple tapered Fourier transforms are then obtained from the product, from which the set of frequency dependent features are calculated. In a preferred embodiment, a derivative of the cepstrum of the speech signal is used as an estimate of speech signal pitch. In another preferred embodiment, the F-spectrum is calculated from the product and the F-cepstrum is obtained therefrom by calculating the Fourier transform of the smoothed derivative of the log of the F-spectrum. The maximum of the F-cepstrum also provides a pitch estimation.
摘要翻译： 一种用于从语音信号中获取频率相关特征的中间集合的技术，用于语音处理和获得语音间距的估计。 该技术利用来自Slepian序列的多个锥度来获得语音信号和Slepian函数的乘积。 然后从乘积中获得多个渐变傅立叶变换，从中计算出一组频率相关特征。 在优选实施例中，语音信号的倒谱的导数用作语音信号音调的估计。 在另一个优选实施例中，从乘积计算F频谱，并通过计算F频谱的对数的平滑导数的傅立叶变换来获得F倒谱。 F倒谱的最大值也提供了音调估计。
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公开(公告)号：US6009208A
公开(公告)日：1999-12-28
申请号：US517481
申请日：1995-08-21
CPC分类号： G06K9/40 , G06T5/002 , G06T5/10 , G06T2207/10088 , G06T2207/30004
摘要： A methodology is disclosed for processing image data to extract image information of interest from aggregate image information containing other interfering information. Application of the methodology also leads to significant compression in the data, which reduces storage requirements. With the methodology of the invention, an augmented linear decomposition of the image data is performed. Thereafter, components of the image data corresponding to a baseline image, image information introduced by non-regular extraneous factors, and image information related to random noise are removed from the data by suppression of appropriate terms of the linear decomposition. The image data so reduced may contain both image information of interest and image data related to regularly occurring extraneous factors. The image data of interest is removed from such reduced aggregate image data by frequency domain filtering of the reduced aggregate data.
摘要翻译： 公开了一种用于处理图像数据以从包含其他干扰信息的聚合图像信息中提取感兴趣的图像信息的方法。 该方法的应用也导致数据的显着压缩，这减少了存储要求。 利用本发明的方法，执行图像数据的增强的线性分解。 此后，通过抑制线性分解的适当项从数据中去除对应于基线图像的图像数据的分量，由非规则的外来因素引入的图像信息和与随机噪声相关的图像信息。 如此减少的图像数据可以包含感兴趣的图像信息和与定期发生的外来因素相关的图像数据。 感兴趣的图像数据通过对缩小的聚合数据进行频域滤波从该缩减的聚合图像数据中去除。
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公开(公告)号：US06654485B1
公开(公告)日：2003-11-25
申请号：US09470454
申请日：1999-12-22
IPC分类号： G06K900
CPC分类号： G06K9/40 , G06T5/002 , G06T5/10 , G06T2207/10088 , G06T2207/30004
摘要： A methodology is disclosed for processing image data to extract image information of interest from aggregate image information containing other interfering information. Application of the methodology also leads to significant compression in the data, which reduces storage requirements. With the methodology of the invention, an augmented linear decomposition of the image data is performed. Thereafter, components of the image data corresponding to a baseline image, image information introduced by non-regular extraneous factors, and image information related to random noise are removed from the data by suppression of appropriate terms of the linear decomposition. The image data so reduced may contain both image information of interest and image data related to regularly occurring extraneous factors. The image data of interest is removed from such reduced aggregate image data by frequency domain filtering of the reduced aggregate data.
摘要翻译： 公开了一种用于处理图像数据以从包含其他干扰信息的聚合图像信息中提取感兴趣的图像信息的方法。 该方法的应用也导致数据的显着压缩，这减少了存储要求。 利用本发明的方法，执行图像数据的增强的线性分解。 此后，通过抑制线性分解的适当项从数据中去除对应于基线图像的图像数据的分量，由非规则的外来因素引入的图像信息和与随机噪声相关的图像信息。 如此减少的图像数据可以包含感兴趣的图像信息和与定期发生的外来因素相关的图像数据。 感兴趣的图像数据通过对缩小的聚合数据进行频域滤波从该缩减的聚合图像数据中去除。
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公开(公告)号：US06424745B1
公开(公告)日：2002-07-23
申请号：US09081469
申请日：1998-05-19
IPC分类号： G06K946
CPC分类号： G06K9/522 , G06K2209/17
摘要： A method and system for optically recognizing an object from a reference library of known products based on a spectrum of local radius of curvature of the object. A surface portion of an object is illuminated with a pattern of light that permits the extraction of three dimensional coordinates for a set of points on the surface portion of the object. An image data set of the surface portion of the object is then captured with a capture device that is positioned at an angular offset with respect to a source of the light. That is, the combination of the light pattern and the imaging device together generate a two dimensional captured image, from which it is possible to extract the three dimensional coordinates for the set of points on the surface portion of the object. A set of local radii of curvatures are then determined for selected data points in the image data set. A spectrum representing a distribution of the curvatures is then computed for the set of local radii of curvatures. If the data set is for the generation of a library of spectra, it is processed with a dimension reduction analysis to determine a single set of basis functions representing all of the objects and a corresponding set of basis coefficients for each different type of object. If the data set is for an unknown object, then the dimension reduction analysis and the basis functions are applied to the data set to generate an unidentified set of basis coefficients. This latter set is then statistically compared with the reference library of spectra to identify the product or at least designate the closest known products.
摘要翻译： 一种用于基于对象的局部曲率半径的光谱从已知产品的参考库光学地识别对象的方法和系统。 物体的表面部分用允许提取物体的表面部分上的一组点的三维坐标的图案来照亮。 然后利用相对于光源以角度偏移定位的捕获装置捕获对象的表面部分的图像数据集。 也就是说，光图案和成像装置的组合一起产生二维拍摄图像，从该图像可以提取对象的表面部分上的该组点的三维坐标。 然后对图像数据集中的选定数据点确定一组局部曲率半径。 然后，对于局部曲率半径的集合计算表示曲率分布的光谱。 如果数据集用于生成光谱库，则通过维数减小分析来处理数据集，以确定表示所有对象的单个基函数集合，以及每个不同类型对象的对应的一组基准系数。 如果数据集用于未知对象，则将维度减小分析和基函数应用于数据集以生成未识别的基系数集合。 然后将后一组与谱的参考文献库进行统计学比较以鉴定产物或至少指定最接近的已知产物。
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公开(公告)号：US06317098B1
公开(公告)日：2001-11-13
申请号：US09477972
申请日：2000-01-05
IPC分类号： H01Q2126
摘要： Problems of fading in a multi-path environment are ameliorated, and the presence of reflective surfaces is turned from a disadvantage to an advantage, by employing a third polarization direction that effectively creates a third communication channel. This third communication channel can be used to send more information, or to send information with enhanced spatial diversity to thereby improve the overall communication performance. A transmitted signal with three polarization directions is created with a transmitter having, illustratively, three dipole antennas that are spatially orthogonal to each other. A received signal having energy content in three polarization directions is detected by a receiver having, illustratively, three dipole antennas that are spatially orthogonal to each other.
摘要翻译： 通过采用有效地创建第三通信信道的第三偏振方向，改善了多径环境中的衰落问题，并且反射表面的存在从缺点转变为优点。 该第三通信信道可以用于发送更多信息，或者发送具有增强的空间分集的信息，从而提高整体通信性能。 具有三个偏振方向的发送信号通过具有例如彼此在空间上正交的三个偶极子天线的发射机产生。 具有三个偏振方向的能量含量的接收信号由具有例如在空间上彼此正交的三个偶极子天线的接收机检测。
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公开(公告)号：US06195064B1
公开(公告)日：2001-02-27
申请号：US09379151
申请日：1999-08-23
IPC分类号： H01Q2126
摘要： Problems of fading in a multi-path environment are ameliorated, and the presence of reflective surfaces is turned from a disadvantage to an advantage, by employing a third polarization direction that effectively creates a third communication channel. This third communication channel can be used to send more information, or to send information with enhanced spatial diversity to thereby improve the overall communication performance. A transmitted signal with three polarization directions is created with a transmitter having, illustratively, three dipole antennas that are spatially orthogonal to each other. To take advantage of the signal with the third polarization direction, the receiver also comprises three mutually orthogonal antenna dipoles.
摘要翻译： 通过采用有效地创建第三通信信道的第三偏振方向，改善了多径环境中的衰落问题，并且反射表面的存在从缺点转变为优点。 该第三通信信道可以用于发送更多信息，或者发送具有增强的空间分集的信息，从而提高整体通信性能。 具有三个偏振方向的发送信号通过具有例如彼此在空间上正交的三个偶极子天线的发射机产生。 为了利用具有第三偏振方向的信号，接收机还包括三个相互正交的天线偶极子。
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8.发明申请Communicating Over Single- or Multiple- Antenna Channels Having Both Temporal and Spectral Fluctuations 有权在具有时间和频谱波动的单天线或多天线信道上进行通信公开(公告)号：US20120321016A1
公开(公告)日：2012-12-20
申请号：US13597781
申请日：2012-08-29
IPC分类号： H04L27/04
CPC分类号： H04L25/0202 , H04L1/06 , H04L5/0023 , H04L5/0048 , H04L25/03834
摘要： This inventions provides techniques for estimating both temporal and spectral channel fluctuations with the duration of a data symbol. Certain pulse shaping functions are Discrete Prolate Spheroidal Sequences (DPSSs) and are used primarily because of their relatively limited Inter-Symbol Interference (ISI) properties. During reception, these properties allow one or more parameters of a joint time-frequency channel model to be more easily determined. Once the one or more parameters are determined, they can be applied to received symbols to correct the temporal fluctuations, spectral fluctuations, or both of the channel over which a communication took place. The techniques may be adapted for the Multiple-In, Multiple-Out communication situation.
摘要翻译： 本发明提供了用于在数据符号的持续时间内估计时间和频谱信道波动的技术。 某些脉冲整形功能是离散放大球形序列（DPSS），主要是因为它们相对有限的符号间干扰（ISI）属性。 在接收期间，这些属性允许更容易地确定联合时频信道模型的一个或多个参数。 一旦确定了一个或多个参数，就可以将它们应用于所接收的符号，以校正通信所发生的信道的时间波动，频谱波动或两者。 这些技术可以适用于多输入多输出通信情况。
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9.发明授权Process for holography using reference beam having correlated phase content 有权使用具有相关相位含量的参考光束进行全息术的方法公开(公告)号：US06191875B1
公开(公告)日：2001-02-20
申请号：US09363336
申请日：1999-07-29
IPC分类号： G03H112
CPC分类号： G11C13/042 , G03H2001/2675
摘要： An improved process for holography is provided, in which the reference beam used for storage and readout has a correlated phase content. In particular, it was found that reference beams having random phase content limited the attainable storage density and the accuracy of readout of stored holograms due to uncontrolled fluctuations in the correlation selectivity. By contrast, a reference beam having correlated phase content provides accurate shift selectivity, the ability to tailor the reference beam spectrum to minimize crosstalk between neighboring holograms, and mitigation of limitations inherent in the holographic system or holographic medium. Improved storage density and readout accuracy are thereby attained.
摘要翻译： 提供了一种用于全息术的改进方法，其中用于存储和读出的参考光束具有相关的相位内容。 特别地，发现具有随机相位含量的参考光束由于相关选择性的不受控制的波动而限制了可获得的存储密度和存储的全息图的读出精度。 相反，具有相关相位内容的参考光束提供精确的偏移选择性，定制参考光束光谱以最小化相邻全息图之间的串扰的能力以及全息系统或全息介质中固有的限制的减轻。 由此可以获得改善的存储密度和读出精度。
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公开(公告)号：US6163391A
公开(公告)日：2000-12-19
申请号：US113634
申请日：1998-07-10
CPC分类号： G11B7/1372 , G03H1/16 , G03H2210/22 , G03H2223/13 , G03H2225/55
摘要： We disclose apparatus for holographic recording of information. The apparatus includes a lens or lens system, referred to here as the "FT lens," situated in such a way that light from an object beam enters the FT lens after passing through an object, and light leaving the FT lens impinges on a recording medium situated at a Fourier transform plane of the object with respect to the FT lens. In certain aspects of the invention, the apparatus includes a phase element effectively juxtaposed with the object, the phase element is effective for redistributing object-beam intensity in the Fourier transform plane, and the phase element has a correlation length greater than a maximum pixel side length associated with the object. In certain other aspects of the invention, the apparatus includes an optical element or optical system, referred to here as a "power optic," that adds convergence or divergence to the object beam before the object beam enters the FT lens.
摘要翻译： 我们公开了全息记录信息的设备。 该装置包括这样称为“FT透镜”的透镜或透镜系统，该透镜或透镜系统以这样的方式设置，使得来自物体光的光在穿过物体后进入FT透镜，并且离开FT透镜的光照射在记录上 介质位于物体相对于FT透镜的傅里叶变换平面。 在本发明的某些方面，所述装置包括与所述物体有效并列的相位元件，所述相位元件对于在所述傅里叶变换平面中重新分配物体光束强度是有效的，并且所述相位元素具有大于最大像素侧的相关长度 与对象相关的长度。 在本发明的某些其它方面，该装置包括一个光学元件或光学系统，这里称为“功率光学器件”，其在对象光束进入FT透镜之前将对象光束的会聚或发散增加。
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