公开(公告)号：US20090148171A1

公开(公告)日：2009-06-11

申请号：US11953220

申请日：2007-12-10

申请人： David Zhi Chen ,  E. Evert Basch

发明人： David Zhi Chen ,  E. Evert Basch

IPC分类号： H04B10/06

CPC分类号： H04B10/675 ,  H04B10/677

摘要： An optical receiver includes a first interferometer having a plurality of arms. The optical receiver further includes first tunable optical filters connected in series with the arms of the first interferometer, where each first tunable optical filter is tuned to filter a region of overlap in the optical frequency spectrum between adjacent optical channels.

摘要翻译： 光接收机包括具有多个臂的第一干涉仪。 光接收器还包括与第一干涉仪的臂串联连接的第一可调光滤波器，其中每个第一可调谐滤光器被调谐以过滤相邻光通道之间的光频谱中的重叠区域。

公开(公告)号：US06512836B1

公开(公告)日：2003-01-28

申请号：US09627748

申请日：2000-07-28

申请人： Liehua Xie ,  Arianne Michelle Lewis ,  Evert Basch ,  Gonzalo Arce

发明人： Liehua Xie ,  Arianne Michelle Lewis ,  Evert Basch ,  Gonzalo Arce

IPC分类号： G06K900

CPC分类号： G06T1/005 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N21/23892

摘要： A system (100) for watermarking digital data includes a watermark etching subsystem (105) and a watermark extraction subsystem (110). The watermark etching subsystem (105) obtains a matrix of digital data values, selects windows including a plurality of data values from the matrix, specifies a parameter that indicates an acceptable amount of variation in the data values, and etches watermark bits in each window of data values using the specified parameter. The watermark extraction subsystem (110) obtains a matrix of digital data values containing an etched watermark, selects windows comprising a plurality of data values from the matrix, and extracts watermark bits from each window of data values using the specified parameter.

摘要翻译： 用于水印数字数据的系统（100）包括水印蚀刻子系统（105）和水印提取子系统（110）。 水印蚀刻子系统（105）获得数字数据值的矩阵，从矩阵中选择包括多个数据值的窗口，指定指示数据值的可接受变化量的参数，并且蚀刻每个窗口中的水印位 使用指定参数的数据值。 水印提取子系统（110）获得包含蚀刻水印的数字数据值矩阵，从矩阵中选择包含多个数据值的窗口，并使用指定参数从每个数据值窗口中提取水印位。

公开(公告)号：US6108382A

公开(公告)日：2000-08-22

申请号：US19923

申请日：1998-02-06

申请人： Steven Gringeri ,  E. Evert Basch ,  Vijay Kumar Samalam ,  Bhumip Khasnabish ,  Roman V. Egorov

发明人： Steven Gringeri ,  E. Evert Basch ,  Vijay Kumar Samalam ,  Bhumip Khasnabish ,  Roman V. Egorov

IPC分类号： H04N7/50 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/6332 ,  H04N21/654 ,  H04N7/12

CPC分类号： H04N19/164 ,  H04N19/115 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N21/23655 ,  H04N21/2402 ,  H04N21/64307 ,  H04N21/23406

摘要： A method and system for transmitting a video stream in an asynchronous transfer mode (ATM) network comprises steps of encoding the video into an MPEG-2 variable bit rate video stream, shaping the encoded variable bit rate video stream to conform to the traffic contract parameters for a Variable Bit Rate (VBR) connection in the network, and transmitting the shaped variable bit rate video stream on the VBR connection based on the traffic contract parameters. For a given network bandwidth, switch buffer space, and equivalent video quality, the network can statistically multiplex a larger number of variable bit rate video streams by maximizing the utilization of the network bandwidth and switch buffer space that the network allocates to each video stream.

摘要翻译： 用于在异步传输模式（ATM）网络中传输视频流的方法和系统包括以下步骤：将视频编码为MPEG-2可变比特率视频流，整形编码的可变比特率视频流以符合业务合同参数 用于网络中的可变比特率（VBR）连接，并且基于业务合同参数在VBR连接上传输成形的可变比特率视频流。 对于给定的网络带宽，切换缓冲区空间和等效视频质量，网络可以通过最大化网络带宽的利用率和网络分配给每个视频流的切换缓冲区空间来统计复用更大数量的可变比特率视频流。

公开(公告)号：US20080144996A1

公开(公告)日：2008-06-19

申请号：US11612646

申请日：2006-12-19

申请人： E. Evert Basch ,  Steven Anthony Gringeri

发明人： E. Evert Basch ,  Steven Anthony Gringeri

IPC分类号： G02B6/42 ,  G02B6/26

CPC分类号： G02B6/122 ,  G02B6/2821 ,  G02B2006/12145 ,  G02B2006/1215

摘要： A system is provided including a first waveguide having an optical input and a first optical output. A second waveguide includes a second optical output. A coupling region is between the first waveguide and the second waveguide. The coupling region controllably couples the first waveguide and the second waveguide when a field is applied to the coupling region. The strength of the field is variable to control the coupling. Further, the first waveguide, the second waveguide, and the coupling region may be made of electro-optical material. In another example, a component is provided including a substrate and an electro-optical material formed on the substrate. A first and second waveguide are formed of said electro-optical material. An electrode structure is formed proximal to the first waveguide and the second waveguide. The electrode structure selectively provides an electric field in the electro-optical material when a voltage is applied to the electrode structure.

摘要翻译： 提供一种包括具有光输入和第一光输出的第一波导的系统。 第二波导包括第二光输出。 耦合区域在第一波导和第二波导之间。 当场耦合到耦合区域时，耦合区域可控地耦合第一波导和第二波导。 该领域的强度是可变的，以控制耦合。 此外，第一波导，第二波导和耦合区域可以由电光材料制成。 在另一示例中，提供了包括基板和形成在基板上的电光材料的部件。 第一和第二波导由所述电光材料形成。 在第一波导和第二波导附近形成电极结构。 当电压施加到电极结构时，电极结构选择性地提供电光材料中的电场。

公开(公告)号：US06665420B1

公开(公告)日：2003-12-16

申请号：US09596815

申请日：2000-06-19

申请人： Liehua Xie ,  Arianne M. Lewis ,  Evert Basch ,  Gonzalo Arce

发明人： Liehua Xie ,  Arianne M. Lewis ,  Evert Basch ,  Gonzalo Arce

IPC分类号： G06K900

CPC分类号： G06T1/0035 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0053 ,  G06T2201/0061 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32277 ,  H04N2201/3233

摘要： A method of generating a authentication code (“MAC”) with improved error tolerance exhibits improved survivability against acceptable signal distortions such as recompression. A method of generating a message authentication code associated with an image includes receiving blocks of image coefficient data where each coefficient has an original value falling within a range of values. The range of values is divided into first and second regions both having allowed coefficient values, and an error tolerance buffer region formed between the first and second regions having disallowed coefficient values. The original values of DC coefficients from each block of the image coefficient data is mapped to a modified value contained in one of the first and second regions, but not contained in the error tolerance buffer region. A MAC is generated as a function of the most significant bits of the modified image coefficient values.

摘要翻译： 产生具有改进的误差容限的认证码（“MAC”）的方法对于可接受的信号失真（例如再压缩）表现出改善的生存性。 生成与图像相关联的消息认证码的方法包括：图像系数数据块的接收块，其中每个系数具有落在值范围内的原始值。 值的范围被划分为具有允许的系数值的第一和第二区域，以及形成在具有不允许的系数值的第一和第二区域之间的误差容限缓冲区域。 来自图像系数数据的每个块的DC系数的原始值被映射到包含在第一和第二区域之一中但不包含在容错缓冲区域中的修改值。 作为修正图像系数值的最高有效位的函数产生MAC。

公开(公告)号：US06233226B1

公开(公告)日：2001-05-15

申请号：US09240484

申请日：1999-01-29

申请人： Steven Gringeri ,  Khaled Ali Shuaib ,  Evert Basch

发明人： Steven Gringeri ,  Khaled Ali Shuaib ,  Evert Basch

IPC分类号： H04N710

CPC分类号： H04N21/23406 ,  H04L12/6418 ,  H04L2012/5636 ,  H04L2012/5664 ,  H04L2012/5681 ,  H04L2012/6483 ,  H04L2012/6489 ,  H04N21/44004 ,  H04Q11/0478

摘要： A system and method are provided for analyzing and transmitting video over a switched network. According to an aspect of the invention, two phases are generally provided: an analysis phase performed before transmission of the video; and a transmission phase performed after analyzing the video stream. During the pre-transmission video analysis phase, the video stream is analyzed in order to determine the needed traffic control parameters, such as the peak cell rate, the sustained cell rate, and the maximum burst size. The goal of the analysis phase is to select a transmission traffic contract for the encoded video stream that will minimize the utilization of network resources and permit the quality of the video to be maintained. After the analysis phase, the transmission phase is performed to transmit the video over the network in accordance with the selected traffic control parameters. During the transmission phase, a model of the decoder buffer is kept at the source and is first pre-filled by transmitting data at the sustained cell rate. Thereafter, the video stream data is transmitted at the peak cell rate or the sustained cell rate depending on the availability of tokens.

摘要翻译： 提供了一种用于通过交换网络分析和发送视频的系统和方法。 根据本发明的一个方面，通常提供两个阶段：在视频传输之前执行的分析阶段; 以及在分析视频流之后执行的传输阶段。 在预传输视频分析阶段期间，分析视频流以便确定所需的流量控制参数，例如峰值信元速率，持续信元速率和最大突发尺寸。 分析阶段的目标是为编码视频流选择一个传输流量合同，这将使网络资源的利用率最小化，并允许维护视频的质量。 在分析阶段之后，执行发送阶段以根据所选择的业务控制参数通过网络发送视频。 在传输阶段，解码器缓冲器的模型保持在源处，并且通过以持续的信元速率发送数据来首先预填充。 此后，根据令牌的可用性，以峰值信元速率或持续信元速率发送视频流数据。

公开(公告)号：US08412054B2

公开(公告)日：2013-04-02

申请号：US13198198

申请日：2011-08-04

申请人： David Zhi Chen ,  E. Evert Basch

发明人： David Zhi Chen ,  E. Evert Basch

IPC分类号： H04B10/06

CPC分类号： H04B10/675 ,  H04B10/677

摘要： An optical receiver includes a first interferometer having a plurality of arms. The optical receiver further includes first tunable optical filters connected in series with the arms of the first interferometer, where each first tunable optical filter is tuned to filter a region of overlap in the optical frequency spectrum between adjacent optical channels.

摘要翻译： 光接收机包括具有多个臂的第一干涉仪。 光接收器还包括与第一干涉仪的臂串联连接的第一可调光滤波器，其中每个第一可调谐滤光器被调谐以过滤相邻光通道之间的光频谱中的重叠区域。

公开(公告)号：US08032036B2

公开(公告)日：2011-10-04

申请号：US11953220

申请日：2007-12-10

申请人： David Zhi Chen ,  E. Evert Basch

发明人： David Zhi Chen ,  E. Evert Basch

IPC分类号： H04B10/06

CPC分类号： H04B10/675 ,  H04B10/677

摘要： An optical receiver includes a first interferometer having a plurality of arms. The optical receiver further includes first tunable optical filters connected in series with the arms of the first interferometer, where each first tunable optical filter is tuned to filter a region of overlap in the optical frequency spectrum between adjacent optical channels.

摘要翻译： 光接收机包括具有多个臂的第一干涉仪。 光接收器还包括与第一干涉仪的臂串联连接的第一可调光滤波器，其中每个第一可调谐滤光器被调谐以过滤相邻光通道之间的光频谱中的重叠区域。

公开(公告)号：US07012982B1

公开(公告)日：2006-03-14

申请号：US09597112

申请日：2000-06-20

申请人： Evert Basch ,  Khaled Shuaib ,  Tarek Saadawi ,  Steven Gringeri ,  Myung Lee

发明人： Evert Basch ,  Khaled Shuaib ,  Tarek Saadawi ,  Steven Gringeri ,  Myung Lee

IPC分类号： H04L25/00 ,  H04L25/40

CPC分类号： H04J3/0632 ,  H04L29/06027 ,  H04L65/80 ,  H04N21/4344

摘要： The present invention relates to an improved method of de-jittering MPEG-2 and MPEG-4 data that is transmitted over a network. First, a network system jitter associated with periodic reference data packets is estimated. Then, the estimated system jitter is used to adjust clock-stamped reference values in the data packets before they are provided to the PLL for clock synchronization. The invented de-jittering method improves the PLL's ability to synchronize the MPEG data and provides for a better quality playback.

摘要翻译： 本发明涉及通过网络发送的去抖动MPEG-2和MPEG-4数据的改进方法。 首先，估计与周期性参考数据分组相关联的网络系统抖动。 然后，估计的系统抖动用于在将数据包提供给PLL以便进行时钟同步之前调整数据包中的时间戳参考值。 本发明的去抖动方法提高了PLL同步MPEG数据的能力，并提供了更好的质量回放。

公开(公告)号：US4184056A

公开(公告)日：1980-01-15

申请号：US948850

申请日：1978-10-05

申请人： E. Evert Basch ,  Richard A. Beaudette

发明人： E. Evert Basch ,  Richard A. Beaudette

IPC分类号： H04B10/02 ,  H04B10/08 ,  H04B17/40 ,  H04B3/46 ,  H04B9/00

CPC分类号： H04B10/0771 ,  H04B10/07 ,  H04B17/404

摘要： A fault locating system for optical telecommunications includes a central office and means associated therewith for generating a tone signal. Analog to digital conversion means convert the tone signal to a digital signal. Cable driving means, receiving the digital signal, provide a driving output to an optical cable. The optical cable output is coupled to an input of a repeater which reforms the received digital signal before retransmission thereof. The repeater is coupled to an input of a filter which passes signals at a frequency f.sub.1. The output of the first repeater is coupled to an input of a second optical cable. The output of the second optical cable is coupled to an input of a second repeater which reforms the received digital signal before retransmission thereof. The second repeater is coupled to an input of a second filter which passes signals at a frequency f.sub.2. The output of the (n-1)st repeater is coupled to the input of an nth optical cable. The output of the nth optical cable is coupled to an input of an nth repeater which reforms the received digital signal before retransmission thereof. The nth repeater is coupled to an input of an nth filter which passes signals at a frequency f.sub.n ( n is an integer greater than 1). A pair of wires couples the outputs of all the filters to the central office. The analog to digital conversion means can include a delta modulator which can include a comparator having a first input adapted to receive a tone signal. It can further include a quantizer having a first input coupled to the comparator output, a second input adapted to receive clock pulses, a first output for providing a digital output therefrom and a second output coupled to an input of an audio filter whose output is coupled to the comparator second input.

摘要翻译： 用于光通信的故障定位系统包括中心局和与其相关联的装置，用于产生音调信号。 模数转换装置将音调信号转换为数字信号。 接收数字信号的电缆驱动装置向光缆提供驱动输出。 光缆输出耦合到中继器的输入，该中继器在其重传之前重新接收数字信号。 中继器耦合到以频率f1传递信号的滤波器的输入。 第一中继器的输出耦合到第二光缆的输入端。 第二光缆的输出耦合到第二中继器的输入，该第二中继器在重传之前重新接收数字信号。 第二中继器耦合到以频率f2传递信号的第二滤波器的输入。 第（n-1）个中继器的输出耦合到第n个光缆的输入端。 第n个光缆的输出耦合到第n个中继器的输入端，该第n个中继器的重传之前重新接收数字信号。 第n个中继器耦合到以频率fn（n是大于1的整数）传递信号的第n个滤波器的输入。 一对电线将所有滤波器的输出耦合到中心局。 模数转换装置可以包括增量调制器，其可以包括具有适于接收音调信号的第一输入的比较器。 它还可以包括量化器，其具有耦合到比较器输出端的第一输入端，适于接收时钟脉冲的第二输入端，用于提供数字输出的第一输出端和耦合到音频滤波器输入的第二输出端，输出端耦合 到比较器第二输入。