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1. 发明公开

EP0817201A3 Method, apparatus and medium for holographic data storage system 无效
标题翻译：方法，装置和介质，用于全息数据存储系统
公开(公告)号：EP0817201A3
公开(公告)日：2000-12-20
申请号：EP97304239.3
申请日：1997-06-17
申请人： LUCENT TECHNOLOGIES INC.
发明人： Campbell, Scott Patrick , Richardson, Thomas J. , Curtis, Kevin Richard
IPC分类号： G11B7/00 , G11C13/04
CPC分类号： G11B7/0065 , G11C7/005 , G11C13/042
摘要： Feedback is employed in a holographic memory system to facilitate rapid access to information in a stored data page. This feedback technique provides compensation for thermal, optical and/or mechanical variations in the system components that tend to interrupt the projection of a data page image on a sensor array. A page indicator or mark is stored in a holographic storage medium with a page of data such that, during playback, a quality, e.g., intensity, of its projected image is indicative of the quality of the corresponding projected data page image. A corresponding page indicator sensor is employed with the associated sensor array to detect the quality of a projected page indicator image. The projected data page image can then be read by sensor elements of the detector based on the detected quality of the page indicator image. Such a detector can be implemented in an active pixel sensor (APS) array with the page indicator sensor being implemented as a region of the APS array. Registration of the sensor array elements with respect to projected data pixels of the data page image can also be aligned to an absolute or substantially nearest pixel alignment by a similar feedback technique.

2. 发明公开

EP0942566A2 Reduction of peak to average power ratio in multicarrier systems 有权
标题翻译： Mehrträgersystemen的Verringerung desVerhältnissesvon Spitzen- zu Durchschnittsleistung
公开(公告)号：EP0942566A2
公开(公告)日：1999-09-15
申请号：EP99301548.6
申请日：1999-03-02
申请人： LUCENT TECHNOLOGIES INC.
发明人： Laroia, Rajiv , Urbanke, Rudiger L. , Richardson, Thomas J.
IPC分类号： H04L27/26
CPC分类号： H04L27/2614 , H04L27/2602
摘要： We describe an improved method for decreasing the probability of an unacceptably high peak-to-average power ratio in a signal to be transmitted by a Frequency Division Multiplexing (FDM) system, such as a discrete multitone (DMT) system. The method involves generating at least two alternative signal sequences, computing Fourier transforms of the respective alternative signal sequences, and selecting for transmission one of these sequences, based on the Fourier transform computations. More specifically, the selection of one sequence may be based, e.g., on the determination that the Fourier transform of that sequence has an acceptable peak power. Alternatively, a comparison may be made among the Fourier transforms of the respective signal sequences, and selection made of that sequence whose Fourier transform exhibits the lowest peak power.
摘要翻译：我们描述了一种改进的方法，用于降低由诸如离散多音（DMT）系统的频分复用（FDM）系统传输的信号中不可接受的高峰值与平均功率比的概率。该方法包括产生至少两个替代信号序列，计算各个备选信号序列的傅里叶变换，以及基于傅里叶变换计算来选择这些序列之一传输。更具体地说，一个序列的选择可以例如基于该序列的傅里叶变换具有可接受的峰值功率的确定。或者，可以在各个信号序列的傅里叶变换之间进行比较，以及由傅立叶变换表现出最低峰值功率的该序列的选择。

3. 发明授权

EP0942566B1 Reduction of peak to average power ratio in multicarrier systems 有权
标题翻译：减少峰值与平均功率在多载波系统中的比例
公开(公告)号：EP0942566B1
公开(公告)日：2001-11-07
申请号：EP99301548.6
申请日：1999-03-02
申请人： LUCENT TECHNOLOGIES INC.
发明人： Laroia, Rajiv , Urbanke, Rudiger L. , Richardson, Thomas J.
IPC分类号： H04L27/26
CPC分类号： H04L27/2614 , H04L27/2602

4. 发明公开

EP0942566A3 Reduction of peak to average power ratio in multicarrier systems 有权
标题翻译：减少峰值与平均功率在多载波系统中的比例
公开(公告)号：EP0942566A3
公开(公告)日：2000-05-03
申请号：EP99301548.6
申请日：1999-03-02
申请人： LUCENT TECHNOLOGIES INC.
发明人： Laroia, Rajiv , Urbanke, Rudiger L. , Richardson, Thomas J.
IPC分类号： H04L27/26
CPC分类号： H04L27/2614 , H04L27/2602
摘要： We describe an improved method for decreasing the probability of an unacceptably high peak-to-average power ratio in a signal to be transmitted by a Frequency Division Multiplexing (FDM) system, such as a discrete multitone (DMT) system. The method involves generating at least two alternative signal sequences, computing Fourier transforms of the respective alternative signal sequences, and selecting for transmission one of these sequences, based on the Fourier transform computations. More specifically, the selection of one sequence may be based, e.g., on the determination that the Fourier transform of that sequence has an acceptable peak power. Alternatively, a comparison may be made among the Fourier transforms of the respective signal sequences, and selection made of that sequence whose Fourier transform exhibits the lowest peak power.

5. 发明公开

EP1009124A2 Wireless transmission method for antenna arrays using unitary space-time signals 有权
标题翻译：一种用于非接触式发送方法使用均匀时间 - 空间信号相控阵天线
公开(公告)号：EP1009124A2
公开(公告)日：2000-06-14
申请号：EP99309613.0
申请日：1999-11-30
申请人： LUCENT TECHNOLOGIES INC.
发明人： Hochwald, Bertrand M. , Marzetta, Thomas Louis , Richardson, Thomas J. , Sweldens, Wim , Urbanke, Rudiger L.
IPC分类号： H04L1/06
CPC分类号： H04L1/0618
摘要： Messages according to a method of wireless signal transmission are sent as sequences of unitary space-time signals. Each signal is representable as a matrix in which each column represents a respective transmitting antenna of a transmitting array, and each row represents a time segment. Each such matrix is proportional to a complex-valued matrix, all columns of which are mutually orthonormal. A new method for creating a constellation of signal matrices comprises providing an initial signal in the form of a complex, orthonormal matrix. The method further comprises generating a further plurality of matrices by a process that assures that each of the generated matrices is related to the initial matrix as a product of one or more multiplications of the initial matrix by one or more unitary matrices.
摘要翻译： gemäß到无线信号传输的方法的信息将作为酉空时信号的序列被发送。每个信号可表示为一个矩阵，其中每一列darstellt发送阵列的respectivement发射天线，且每一行darstellt时间段。每个搜索矩阵正比于复数值矩阵，该矩阵的所有列是相互正交的。用于创建信号矩阵的星座的新方法包括在初始信号中的复合物，正交矩阵的形式提供。该方法进一步包括通过一个processthat保证确实每个产生的矩阵的生成矩阵的另外的多个关系到初始矩阵如通过一个或多个酉矩阵的初始矩阵的一个或多个乘法的乘积。

6. 发明授权

EP0852377B1 Comparator-based thresholding method for determining data values 失效
标题翻译：用于确定数据值Komparatorbasiertes阈值法
公开(公告)号：EP0852377B1
公开(公告)日：1999-09-08
申请号：EP97309686.0
申请日：1997-12-02
申请人： LUCENT TECHNOLOGIES INC.
发明人： Campbell, Scott Patrick , Richardson, Thomas J. , Curtis, Kevin Richard
IPC分类号： G11B7/00 , G11C13/04 , G11B20/10
CPC分类号： G11B20/10009 , G11B7/005 , G11B7/0065

7. 发明公开

EP0852377A1 Comparator-based thresholding method for determining data values 失效
标题翻译： Komparatorbasiertes Schwellenverfahren zur Ermittlung von Datenwerten
公开(公告)号：EP0852377A1
公开(公告)日：1998-07-08
申请号：EP97309686.0
申请日：1997-12-02
申请人： LUCENT TECHNOLOGIES INC.
发明人： Campbell, Scott Patrick , Richardson, Thomas J. , Curtis, Kevin Richard
IPC分类号： G11B7/00 , G11C13/04 , G11B20/10
CPC分类号： G11B20/10009 , G11B7/005 , G11B7/0065
摘要： Embodiments of the invention include a method (10) and apparatus (20) for determining values for data reproduced or retrieved from data storage media such as in holographic memory systems. The method includes approximating (12) the initial value of data members retrieved initially from the data storage medium of interest (by their intensity levels based on an absolute scale), using those approximations collectively to establish (14) one or more threshold levels for defining ranges for the data values to be determined, and determining values for the retrieved data members by comparing (16) the initial data value approximations of the retrieved data members to the established threshold levels. Alternatively, the threshold level(s) are set initially and adjusted iteratively based on the initial approximations of the individual data members until a final established threshold level is established. Advantageously, embodiments of the invention reduce data encoding overhead by using data members to establish comparative threshold levels for the determination of their intended values.
摘要翻译：本发明的实施例包括一种用于确定从诸如全息存储器系统之类的数据存储介质再现或检索的数据的值的方法（10）和装置（20）。该方法包括近似（12）最初从感兴趣的数据存储介质（基于绝对尺度的其强度级别）检索的数据成员的初始值，使用这些近似集合来建立（14）一个或多个阈值水平以定义通过将检索到的数据成员的初始数据值近似与建立的阈值水平进行比较来确定检索到的数据成员的值的范围。或者，初始设置阈值水平，并且基于各个数据成员的初始近似来迭代地进行调整，直到建立最终建立的阈值水平。有利地，本发明的实施例通过使用数据成员来建立用于确定其预期值的比较阈值水平来减少数据编码开销。

8. 发明公开

EP0962886A2 Method and system for watermarking in the frequency domain 审中-公开
标题翻译： Verfahren und System zur Herstellung eines Wasserzeichens im Frequenzbereich
公开(公告)号：EP0962886A2
公开(公告)日：1999-12-08
申请号：EP99303454.5
申请日：1999-05-04
申请人： LUCENT TECHNOLOGIES INC.
发明人： Bruckstein, Alfred M. , Richardson, Thomas J.
IPC分类号： G06T1/00
CPC分类号： G06T1/005 , G06T2201/0052 , G06T2201/0065 , G06T2201/0081 , H04N1/32154 , H04N1/32187 , H04N2201/3233
摘要： A method and system for watermarking and recovering a watermarked digitized image for subsequent authentication. The digitized image comprises spatial domain data signals reproduced from an original image. A transformer transforms the spatial domain data signals into frequency domain data signals, including respective magnitude and phase data signal components. Information is embedded into the magnitude data signals to develop modified data signals and the modified data signals are converted from the frequency domain to the spatial domain to generate the watermarked digitized image. For recovery, a second transformer transforms the spatial domain data signals comprising the respective original digitized image and watermarked digitized image into respective frequency domain dataset signals. A comparator responsive to the two transformer outputs compares the respective frequency domain dataset signals to identify the watermark and verify the authenticity of the image reproduction.
摘要翻译：一种用于水印和恢复水印数字化图像以用于后续认证的方法和系统。数字化图像包括从原始图像再现的空间域数据信号。变压器将空间域数据信号变换成频域数据信号，包括相应的幅度和相位数据信号分量。信息被嵌入到幅度数据信号中以形成修改的数据信号，并且将修改的数据信号从频域转换到空间域以产生加水印的数字化图像。为了恢复，第二变压器将包括相应的原始数字化图像和水印数字化图像的空间域数据信号变换成相应的频域数据集信号。响应于两个变压器输出的比较器比较相应的频域数据集信号以识别水印并验证图像再现的真实性。

9. 发明公开

EP0817201A2 Method, apparatus and medium for holographic data storage system 无效
标题翻译： Verfahren，Gerätund Mediumfürein holographisches Datenspeichersystem
公开(公告)号：EP0817201A2
公开(公告)日：1998-01-07
申请号：EP97304239.3
申请日：1997-06-17
申请人： LUCENT TECHNOLOGIES INC.
发明人： Campbell, Scott Patrick , Richardson, Thomas J. , Curtis, Kevin Richard
IPC分类号： G11C13/04
CPC分类号： G11B7/0065 , G11C7/005 , G11C13/042
摘要： Feedback is employed in a holographic memory system to facilitate rapid access to information in a stored data page. This feedback technique provides compensation for thermal, optical and/or mechanical variations in the system components that tend to interrupt the projection of a data page image on a sensor array. A page indicator or mark is stored in a holographic storage medium with a page of data such that, during playback, a quality, e.g., intensity, of its projected image is indicative of the quality of the corresponding projected data page image. A corresponding page indicator sensor is employed with the associated sensor array to detect the quality of a projected page indicator image. The projected data page image can then be read by sensor elements of the detector based on the detected quality of the page indicator image. Such a detector can be implemented in an active pixel sensor (APS) array with the page indicator sensor being implemented as a region of the APS array. Registration of the sensor array elements with respect to projected data pixels of the data page image can also be aligned to an absolute or substantially nearest pixel alignment by a similar feedback technique.
摘要翻译：在全息存储器系统中采用反馈以便于快速访问存储的数据页面中的信息。该反馈技术为系统组件中的热，光学和/或机械变化提供补偿，这些变化倾向于中断传感器阵列上的数据页图像的投影。页面指示符或标记被存储在具有一页数据的全息存储介质中，使得在回放期间，其投影图像的质量（例如强度）表示对应的投影数据页图像的质量。与相关联的传感器阵列一起使用相应的页面指示器传感器来检测投影的页面指示符图像的质量。然后可以基于检测到的页面指示符图像的质量，由检测器的传感器元件读取投影的数据页面图像。这种检测器可以在有源像素传感器（APS）阵列中实现，页面指示器传感器被实现为APS阵列的区域。相对于数据页图像的投影数据像素的传感器阵列元件的登记也可以通过类似的反馈技术对准到绝对或基本上最近的像素对准。

10. 发明授权

EP1009124B1 Wireless transmission method for antenna arrays using unitary space-time signals 有权
标题翻译：经由天线网络中的无线传输方法，使用酉空时信号
公开(公告)号：EP1009124B1
公开(公告)日：2002-12-04
申请号：EP99309613.0
申请日：1999-11-30
申请人： LUCENT TECHNOLOGIES INC.
发明人： Hochwald, Bertrand M. , Marzetta, Thomas Louis , Richardson, Thomas J. , Sweldens, Wim , Urbanke, Rudiger L.
IPC分类号： H04L1/06 , H04B7/06
CPC分类号： H04L1/0618

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