公开(公告)号：WO2006078347A3

公开(公告)日：2006-09-28

申请号：PCT/US2005041981

申请日：2005-11-21

Applicant: DOTCAST INC ,  ROWSER ANDREW ,  LONG CHRISTOPHER ,  BORLAND GLENN ,  HOARTY W LEO

Inventor： ROWSER ANDREW ,  LONG CHRISTOPHER ,  BORLAND GLENN ,  HOARTY W LEO

IPC: H01Q9/16

CPC classification number: H01Q9/285 ,  H01Q15/0013 ,  H01Q19/108 ,  H03F1/345 ,  H03F1/347 ,  H03F1/42 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/198 ,  H03F2200/36 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2203/45386 ,  H03F2203/45394

Abstract: A broadband, high-gain, active antenna system is disclosed, which operates with a bi-directive reception pattern while in its standard configuration and with a directive reception pattern over several octaves of Radio Frequency (RF) spectrum when affixed with a tuned scatter-plate. As a standalone active antenna system the disclosed antenna probe element and the amplifier subassembly exhibit the bi-directional directive properties of a standard fixed length dipole, while the addition of a scatter-plate makes the antenna directive with separate frequency-dependant directive modes. The scatter-plate can be tuned such that these separate directive modes occur at convenient areas of the RF frequency spectrum. Other means of achieving directivity are disclosed using the antenna probe element and the amplifier subassembly.

Abstract translation: 公开了一种宽带，高增益的有源天线系统，其在标准配置下以双指向接收模式运行，并且在固定有调谐散射光的情况下，具有射频（RF）频谱的若干倍频程的指令接收模式， 盘子。 作为独立有源天线系统，所公开的天线探针元件和放大器子组件表现出标准固定长度偶极子的双向指示性质，而添加散射板则使得具有分开的频率相关指令模式的天线指令。 可以调整散射板，使得这些分离的指令模式发生在RF频谱的方便区域。 使用天线探针元件和放大器子组件来公开实现方向性的其它方式。

公开(公告)号：WO2004059932A3

公开(公告)日：2004-07-15

申请号：PCT/US2003/040672

申请日：2003-12-18

Applicant: DOTCAST, INC. ,  CHUNG, Wonzoo ,  ENDRES, Thomas, J. ,  LONG, Christopher, D.

Inventor： CHUNG, Wonzoo ,  ENDRES, Thomas, J. ,  LONG, Christopher, D.

IPC: H04L25/03

Abstract: The present invention uses a novel adaptive soft decision device in order to jointly optimize decision device and DFE operation. The soft decision device receives the input and output samples of the slicer and generates a feedback sample by non-linearly combining them with respect to a single decision reference parameter. Moreover, the soft decision device provides novel error terms used to adapt equalizer coefficients in order to jointly optimize decision device and equalizer coefficients.

公开(公告)号：WO2004059932A2

公开(公告)日：2004-07-15

申请号：PCT/US0340672

申请日：2003-12-18

Applicant: DOTCAST INC ,  CHUNG WONZOO ,  ENDRES THOMAS J ,  LONG CHRISTOPHER D

Inventor： CHUNG WONZOO ,  ENDRES THOMAS J ,  LONG CHRISTOPHER D

IPC: H03G3/30 ,  H04L25/03 ,  H04L25/06 ,  H04L27/00 ,  H04N7/08

CPC classification number: H03G3/3052 ,  H03G3/3089 ,  H04L25/03057 ,  H04L25/067 ,  H04L2025/03388 ,  H04L2025/0342 ,  H04L2025/0349 ,  H04L2025/03617 ,  H04L2025/0363 ,  H04L2027/003 ,  H04L2027/0055 ,  H04N7/08

Abstract: The present invention uses a novel adaptive soft decision device in order to jointly optimize decision device and DFE operation. The soft decision device receives the input and output samples of the slicer and generates a feedback sample by non-linearly combining them with respect to a single decision reference parameter. Moreover, the soft decision device provides novel error terms used to adapt equalizer coefficients in order to jointly optimize decision device and equalizer coefficients.

Abstract translation: 本发明采用新颖的自适应软判决装置，以便共同优化决策装置和DFE操作。 软判决装置接收限幅器的输入和输出采样，并通过相对于单个判定参考参数非线性组合来产生反馈样本。 此外，软判决装置提供用于适应均衡器系数的新颖的误差项，以共同优化决策装置和均衡器系数。

公开(公告)号：WO2004030359A1

公开(公告)日：2004-04-08

申请号：PCT/US2003/030327

申请日：2003-09-24

Applicant: DOTCAST, INC. ,  HOARTY, Leo, W. ,  CICIORA, Walter, S. ,  HARTSON, Ted, E.

Inventor： HOARTY, Leo, W. ,  CICIORA, Walter, S. ,  HARTSON, Ted, E.

IPC: H04N7/08

CPC classification number: H04N21/4782 ,  H04N5/4401 ,  H04N7/08 ,  H04N7/0803 ,  H04N7/0806 ,  H04N7/10 ,  H04N7/17309 ,  H04N21/4622

Abstract: Various embodiments of the invention provide apparatus, methods, and systems for effectuating an increase in the effective bandwidth of a cable television distribution plant in a manner compatible with most common cable television systems. By using methods and systems for simultaneously transmitting a standard analog television signal and a digital data signal in a manner that minimizes interference of each with the other, one or more data carriers may be embedded within one or more analog television channels in accordance with various aspects of the present invention. These combined signals can be transmitted transparently over the existing cable television distribution plant to a location at or near the subscribers so that, among other things, the set top boxes can download context for controllable viewing when they choose.

Abstract translation: 本发明的各种实施例提供了以与大多数常见的有线电视系统兼容的方式实现有线电视分配工厂的有效带宽增加的装置，方法和系统。 通过使用以最小化每个与另一个的干扰的方式同时传输标准模拟电视信号和数字数据信号的方法和系统，根据各个方面，一个或多个数字载波可嵌入在一个或多个模拟电视频道内 的本发明。 这些组合的信号可以透过现有的有线电视分配工厂透明传输到订户或其附近的位置，使得机顶盒可以下载上下文以便在可选择的情况下进行选择。

公开(公告)号：WO2004028159A1

公开(公告)日：2004-04-01

申请号：PCT/US2003/029423

申请日：2003-09-17

Applicant: DOTCAST, INC. ,  CICIORA, Walt ,  HARTSON, Ted, E. ,  LONG, Christopher, D. ,  ENDRES, Thomas, J.

Inventor： LONG, Christopher, D. ,  ENDRES, Thomas, J.

IPC: H04N7/08

CPC classification number: H04N7/08 ,  H04L2025/03388 ,  H04L2025/0342 ,  H04L2025/0349 ,  H04L2025/03617 ,  H04L2025/0363 ,  H04L2027/003 ,  H04L2027/0055

Abstract: Methods and systems for simultaneous transmission of a standard analog television video signal and a data signal. A transmitter system comprises an analog video signal path and a data signal path. The data signal path produces a data signal that is added to, combined with, or otherwise imposed on the video signal, so as to be substantially in quadrature with the video signal as sensed by television receivers in the broadcast region. An abatement signal is generated and applied to the video signal to correct for effects of the data on the video signal. Receivers can among other things separate the data from the video signal, process the data signal in order to extract and recover the data, and forward the data for output. Such receivers can also include or contain, if desired, output to television receivers for rendering television programming. Other aspects and features are also disclosed and claimed.

Abstract translation: 用于同时传输标准模拟电视视频信号和数据信号的方法和系统。 发射机系统包括模拟视频信号路径和数据信号路径。 数据信号路径产生一个数字信号，该数据信号被添加到视频信号上，或加到视频信号上，或以其他方式施加在视频信号上，以便与由广播区域中的电视接收机感测到的视频信号基本成正交。 产生消除信号并将其应用于视频信号以校正视频信号上数据的影响。 接收器可以将数据与视频信号分开，处理数据信号以提取和恢复数据，并将数据转发出去。 如果需要，这样的接收机还可以包括或包含用于电视节目的电视接收机的输出。 还公开并要求保护其他方面和特征。

公开(公告)号：WO2006078347A2

公开(公告)日：2006-07-27

申请号：PCT/US2005/041981

申请日：2005-11-21

Applicant: DOTCAST, INC. ,  ROWSER, Andrew ,  LONG, Christopher ,  BORLAND, Glenn ,  HOARTY, W., Leo

Inventor： ROWSER, Andrew ,  LONG, Christopher ,  BORLAND, Glenn ,  HOARTY, W., Leo

IPC: H01Q9/16

CPC classification number: H01Q9/285 ,  H01Q15/0013 ,  H01Q19/108 ,  H03F1/345 ,  H03F1/347 ,  H03F1/42 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/198 ,  H03F2200/36 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2203/45386 ,  H03F2203/45394

Abstract: A broadband, high-gain, active antenna system is disclosed, which operates with a bi-directive reception pattern while in its standard configuration and with a directive reception pattern over several octaves of Radio Frequency (RF) spectrum when affixed with a tuned scatter-plate. As a standalone active antenna system the disclosed antenna probe element and the amplifier subassembly exhibit the bi-directional directive properties of a standard fixed length dipole, while the addition of a scatter-plate makes the antenna directive with separate frequency-dependant directive modes. The scatter-plate can be tuned such that these separate directive modes occur at convenient areas of the RF frequency spectrum. Other means of achieving directivity are disclosed using the antenna probe element and the amplifier subassembly.

Abstract translation: 公开了一种宽带，高增益，有源天线系统，其在标准配置下以双定向接收模式操作，并且在几个八度的射频（RF）频率上具有定向接收模式， 光谱贴上调谐散射板时。 作为独立的有源天线系统，所公开的天线探头元件和放大器子组件表现出标准固定长度偶极子的双向指向特性，而添加散射板使得天线指向具有独立的与频率相关的指向模式。 可以对散射板进行调谐，使得这些独立的指导模式发生在RF频谱的方便区域。 使用天线探头元件和放大器子组件来公开使用其它方法获得方向性。

公开(公告)号：WO2004057820A3

公开(公告)日：2004-10-07

申请号：PCT/US0340531

申请日：2003-12-17

Applicant: DOTCAST INC ,  ENDRES THOMAS J ,  LONG CHRISTOPHER D ,  CUNNINGHAM JEFFERY K ,  RAY GARY A

Inventor： ENDRES THOMAS J ,  LONG CHRISTOPHER D ,  CUNNINGHAM JEFFERY K ,  RAY GARY A

IPC: H03G3/30 ,  H04L25/03 ,  H04L27/00 ,  H04N7/08

CPC classification number: H03G3/3052 ,  H03G3/3089 ,  H04L25/03057 ,  H04L2025/03388 ,  H04L2025/0342 ,  H04L2025/0349 ,  H04L2025/03617 ,  H04L2025/0363 ,  H04L2027/003 ,  H04L2027/0055 ,  H04N7/08

Abstract: The present invention uses a feedback equalizer architecture with feedback samples comprised of weighted contributions of scaled soft and inversely-scaled hard decision samples, and adapts forward and feedback filters using weighted contributions of update error terms, such as Constant Modulus Algorithm (CMA) and Least Mean Squares (LMS) error terms. Combining weights are selected on a symbol-by-symbol basis by a novel measure of current sample quality. Adaptation methods of the sample quality measure are discussed. Furthermore, the present invention contains an automatic gain control circuit whose gain is adjusted at every symbol instance by a stochastic gradient descent update rule, minimizing novel cost criteria, to provide scaling factors for the hard and soft decisions.

Abstract translation: 本发明使用具有反馈样本的反馈均衡器架构，其中反馈样本包括缩放的软和反向尺度的硬判决样本的加权贡献，并且使用诸如恒模函数算法（CMA）和最小值的最小化的更新误差项的加权贡献来适配正向和反馈滤波器 均方误差（LMS）误差项。 通过对当前采样质量的新颖度量，逐个按符号选择组合权重。 讨论了样品质量测量的适应方法。 此外，本发明包含一种自动增益控制电路，其增益通过随机梯度下降更新规则在每个符号实例处进行调整，从而最小化新颖的成本标准，以提供硬判决和软决策的缩放因子。

公开(公告)号：WO2004075469A2

公开(公告)日：2004-09-02

申请号：PCT/US2004/004887

申请日：2004-02-19

Applicant: DOTCAST INC. ,  ENDRES, Thomas, J. ,  LONG, Christopher, D. ,  FAGAN, Rory ,  CHUNG, Wonzoo

Inventor： ENDRES, Thomas, J. ,  LONG, Christopher, D. ,  FAGAN, Rory ,  CHUNG, Wonzoo

IPC: H04L

CPC classification number: H04L25/03057 ,  H03G3/3052 ,  H03G3/3089 ,  H03L7/091 ,  H03L2207/50 ,  H04L7/0029 ,  H04L7/0062 ,  H04L7/0079 ,  H04L7/0278 ,  H04L27/3809 ,  H04L2027/0032 ,  H04L2027/0036 ,  H04L2027/0038 ,  H04L2027/0053 ,  H04L2027/0055 ,  H04L2027/0065 ,  H04L2027/0067 ,  H04L2027/0069

Abstract: Various aspects and embodiments of the present invention derive statistics of received signal quality and use these statistics to jointly control operation of timing recovery, carrier recovery, automatic gain control, and equalization functions.

Abstract translation: 本发明的各个方面和实施例导出接收信号质量的统计并使用这些统计来共同控制定时恢复，载波恢复，自动增益控制和均衡功能的操作。

公开(公告)号：WO2003017661A1

公开(公告)日：2003-02-27

申请号：PCT/US2002/025585

申请日：2002-08-13

Applicant: DOTCAST, INC.

Inventor： HOARTY, William, Leo ,  NILO, Bruce, David ,  KOFMAN, Kenneth, Ellot

IPC: H04N7/025

CPC classification number: H04L63/04 ,  H04N7/17318 ,  H04N21/2225 ,  H04N21/2365 ,  H04N21/2541 ,  H04N21/2543 ,  H04N21/262 ,  H04N21/2665 ,  H04N21/41415 ,  H04N21/4347 ,  H04N21/4622 ,  H04N21/4782 ,  H04N21/6375 ,  H04N21/6377 ,  H04N21/658 ,  H04N21/835 ,  H04N21/8355 ,  H04N21/8549

Abstract: Methods and systems for broadcasting data over a television signal spectrum. A network center (30) receives media content elements from content providers (20a, 20b, 20c, 20d). The network center (30) transmits a bundled content element to a wide network delivery system. The wide network delivery system transfers the bundled content elements (32) to a local broadcasting station (50n). The local broadcasting station (50n) includes an edge server (52b) for storing content elements (32) intended for a local market. At a specified time, a new local content element (51b) is provided by the edge server (52b) to a signal combiner. The signal combiner inserts the new local content element (51b) into the television signal spectrum. A transmission facility (53b) broadcasts simultaneously a signal related to the new local content element (51b) and a convention television signal. A receiver receives the television signal spectrum and extracts the new local content element (51b) from the spectrum.

Abstract translation: 用于在电视信号频谱上广播数据的方法和系统。 网络中心（30）从内容提供者（20a，20b，20c，20d）接收媒体内容元素。 网络中心（30）将捆绑的内容元素发送到广泛的网络传送系统。 宽网络传送系统将捆绑的内容元素（32）传送到本地广播台（50n）。 本地广播台（50n）包括用于存储旨在用于本地市场的内容元素（32）的边缘服务器（52b）。 在指定时间，由边缘服务器（52b）向信号组合器提供新的本地内容元素（51b）。 信号组合器将新的本地内容元素（51b）插入电视信号频谱。 传输设备（53b）同时广播与新的本地内容元素（51b）相关的信号和公约电视信号。 接收机接收电视信号频谱，并从频谱中提取新的本地内容元素（51b）。

公开(公告)号：WO2005104550A3

公开(公告)日：2006-01-12

申请号：PCT/US2005012856

申请日：2005-04-15

Applicant: DOTCAST INC ,  CHUNG WONZOO ,  LONG CHRISTOPHER ,  ENDRES THOMAS

Inventor： CHUNG WONZOO ,  LONG CHRISTOPHER ,  ENDRES THOMAS

IPC: H04N7/08

CPC classification number: H04N7/08

Abstract: Methods and apparatus are described for inserting data in a communications system, such as in an existing analog communications system, using quadrature amplitude modulation (QAM) with in-phase analog signals and quadrature data signals. These methods can minimize the distortion to the analog signals while maximizing the data signal strength. The data signals may be sub-modulated on a subcarrier frequency (201) such that the data signals do not interfere with the analog signal detectors in the analog signal receivers, and may be processed with an abatement filter (202) to mitigate the distortion due to Nyquist mismatch in the receiver. The injection phase of data signals may be determined (206) by adaptive algorithms, using a monitor analog signal receiver (103).

Abstract translation: 描述了使用具有同相模拟信号和正交数据信号的正交幅度调制（QAM）在诸如现有模拟通信系统的通信系统中插入数据的方法和装置。 这些方法可以最大限度地减少模拟信号的失真，同时最大化数据信号强度。 数据信号可以在子载波频率（201）上进行子调制，使得数据信号不干扰模拟信号接收机中的模拟信号检测器，并且可以用减弱滤波器（202）来处理，以减轻由于 到接收器中的奈奎斯特不匹配。 数据信号的注入阶段可以通过使用监视器模拟信号接收器（103）的自适应算法来确定（206）。