公开(公告)号：WO2013011491A1

公开(公告)日：2013-01-24

申请号：PCT/IB2012/053716

申请日：2012-07-20

Applicant: IMAX CORPORATION ,  TAN, Weining ,  READ, Steven Charles ,  O'DOR, Matthew

Inventor： TAN, Weining ,  READ, Steven Charles ,  O'DOR, Matthew

IPC: G06T5/00 ,  H04N13/04 ,  H04N5/74

CPC classification number: H04N5/21 ,  G06T5/00 ,  G06T7/80 ,  H04N5/211 ,  H04N5/74 ,  H04N9/3182 ,  H04N9/3185 ,  H04N9/3194 ,  H04N13/106 ,  H04N13/363

Abstract: Certain aspects relate to a method and system whereby any defined system characteristic, property, or parameter can be normalized for farther improving the displayed image quality. The normalization processing can use a generalized calibration process and can normalize a system characteristic, or a system property, and / or parameter to result in a more uniform or accurately displayed image using a generalized image processing method.

Abstract translation: 某些方面涉及一种方法和系统，由此任何定义的系统特征，属性或参数都可以被归一化以进一步提高显示的图像质量。 归一化处理可以使用广义校准过程，并且可以使用通用图像处理方法来归一化系统特性或系统属性和/或参数以导致更均匀或精确地显示的图像。

公开(公告)号：WO2008041612A1

公开(公告)日：2008-04-10

申请号：PCT/JP2007/068846

申请日：2007-09-27

Applicant: 松下電器産業株式会社 ,  高野 遥 ,  熊澤 町也

Inventor： 高野 遥 ,  熊澤 町也

IPC: H04B7/005 ,  H04B3/10

CPC classification number: H04B3/10 ,  H04L25/03076 ,  H04L2025/03484 ,  H04L2025/03605 ,  H04L2025/03617 ,  H04N5/211

Abstract: 　ゴースト信号を除去するためのフィルタのタップ係数を最適な値に短時間で収束させる。波形等化装置は、複数の相関値に基づいて、ＦＩＲフィルタ及びＩＩＲフィルタのタップ係数の初期値を求めて出力する初期タップ係数生成部と、ＦＩＲフィルタ及びＩＩＲフィルタのタップ係数の初期値をこれらのフィルタに出力し、これらのフィルタのタップ係数を誤差情報に基づいて更新するタップ係数更新部とを有する。初期タップ係数生成部は、複数の相関値のうち、所定の範囲の遅延に対応する値の順序を反転し、その結果を、この範囲の遅延に対応する、ＦＩＲフィルタのタップ係数の初期値として求め、かつ、複数の相関値のうち、この範囲より大きい遅延に対応する値の符号を反転し、ＩＩＲフィルタのタップ係数の初期値として求める。

Abstract translation: 可以在短时间内将滤波器抽头系数收敛以将重影信号去除为最佳值。 波形均衡装置包括：初始抽头系数生成单元，其根据多个相关值获取FIR滤波器和IIR滤波器的抽头系数的初始值并输出; 以及抽头系数更新单元，其将FIR滤波器和IIR滤波器的抽头系数的初始值输出到这些滤波器，并根据误差信息更新滤波器抽头系数。 初始抽头系数生成单元将与多个相关值之间的预定范围内的延迟对应的值的顺序反转，并将结果作为与该范围的延迟对应的FIR滤波器抽头系数的初始值获取。 此外，初始抽头系数生成单元将对应于大于多个相关值中的范围的延迟的值的符号反转，以获得IIR滤波器抽头系数的初始值。

公开(公告)号：WO2006065011A1

公开(公告)日：2006-06-22

申请号：PCT/KR2005/002117

申请日：2005-07-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KIM, Ju-Yeun ,  KIM, Young-Su ,  BAE, Jae-Hwui ,  LEE, Hyun ,  LIM, Jong-Soo ,  LEE, Soo-In

Inventor： KIM, Ju-Yeun ,  KIM, Young-Su ,  BAE, Jae-Hwui ,  LEE, Hyun ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04N7/015

CPC classification number: H01Q25/00 ,  H04B7/088 ,  H04N5/211 ,  H04N5/4401 ,  H04N21/42638

Abstract: Provided are a beam combining and hybrid beam selection method that can improve digital broadcasting reception performance by combining more than two beam output signals (beam combination type) instead of simply selecting one of beam output signals (beam selection type), or even selecting an optimal method between the beam selection type and the beam combination type, and a digital broadcasting receiving apparatus using the same. The beam selecting method includes: a) calculating SMNRs (mainpath signal to multipath signal and noise ratios) with respect to a plurality of beam output signals, formed according to directions from a plurality of antenna output signals whose phases are shifted depending on arrangement positions of array antennas, by using corresponding channel impulse responses; b) selecting a first predetermined number of beam output signals according to magnitudes of the SMNRs by comparing the calculated SMNRs with respect to the respective beam output signals; c) calculating a delay time between mainpath signals of the selected beam output signals, and generating a combined beam output signal by combining the two beam output signals by adjusting the calculated delay time; d) when the SMNR of the combined beam output signal is less than the maximal SMNR of the selected beam output signals, calculating an SDMR (mainpath signal to dominant multipath signal ratio) with respect to the respective beam output signals, and selecting a beam output signal having the greatest SDMR; and e) calculating an SMNR of the combined beam output signal using channel impulse response of the combined beam output signal, and comparing the calculated SMNR with a maximal value among the SMNRs of the selected beam output signals; and f) when the SMNR of the combined beam output signal is greater than or equal to the maximal SMNR of the selected output signals, selecting the combined beam output signal generated in step c).

Abstract translation: 提供了一种通过组合两个以上的光束输出信号（光束组合型）而不是简单地选择光束输出信号（光束选择型）中的一种，或者甚至选择最优的光束组合和混合光束选择方法来提高数字广播接收性能 波束选择类型和波束组合类型之间的方法以及使用它们的数字广播接收装置。 波束选择方法包括：a）相对于多个波束输出信号计算SMNR（主路径信号与多径信号和噪声比），根据多个天线输出信号的方向形成，所述多个天线输出信号的相位根据 阵列天线，通过使用相应的信道脉冲响应; b）通过将所计算的SMNR相对于各个波束输出信号进行比较，根据SMNR的幅度来选择第一预定数量的波束输出信号; c）计算所选择的光束输出信号的主路径信号之间的延迟时间，并且通过通过调整所计算的延迟时间来组合两个光束输出信号来产生组合光束输出信号; d）当组合光束输出信号的SMNR小于所选光束输出信号的最大SMNR时，相对于各个光束输出信号计算SDMR（主路径信号与主要多径信号比），并且选择光束输出 SDMR信号最大; 以及e）使用所述组合光束输出信号的信道脉冲响应来计算组合光束输出信号的SMNR，并且将所计算的SMNR与所选光束输出信号的SMNR中的最大值进行比较; 以及f）当组合光束输出信号的SMNR大于或等于所选输出信号的最大SMNR时，选择在步骤c）中产生的组合光束输出信号。

公开(公告)号：WO2005041571B1

公开(公告)日：2005-09-29

申请号：PCT/KR2004002767

申请日：2004-10-29

Applicant: KOREA ELECTRONICS TELECOMM ,  PARK SUNG-IK ,  LEE YONG-TAE ,  SEO JAE-HYUN ,  KIM SEUNG-WON ,  LEE SOO-IN

Inventor： PARK SUNG-IK ,  LEE YONG-TAE ,  SEO JAE-HYUN ,  KIM SEUNG-WON ,  LEE SOO-IN

IPC: H04N7/015 ,  H04B1/10 ,  H04H20/06 ,  H04L27/06 ,  H04L27/14 ,  H04N5/21 ,  H04N5/38 ,  H04N5/455

CPC classification number: H04H20/06 ,  H04B7/15564 ,  H04N5/211 ,  H04N5/38

Abstract: Provided is an on-channel repeater and method thereof. The on-channel repeating apparatus includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal; a demodulating unit for converting the RF signal into a baseband signal; an equalizing unit for equalizing the baseband signal to generate an equalized baseband signal; a modulating unit for converting the equalized baseband signal into an RF signal; and a transmitting unit for transmitting the RF signal.

Abstract translation: 提供一种同频中继器及其方法。 所述在线中继装置包括：接收单元，用于接收射频（RF）广播信号; 解调单元，用于将RF信号转换成基带信号; 用于均衡基带信号以产生均衡的基带信号的均衡单元; 调制单元，用于将均衡的基带信号转换成RF信号; 以及发送单元，用于发送RF信号。

公开(公告)号：WO2003090439A2

公开(公告)日：2003-10-30

申请号：PCT/US2003/010888

申请日：2003-04-09

Applicant: THOMSON LICENSING S.A. ,  HEO, Seo, Weon ,  PARK, Jeongsoon ,  GELFAND, Saul, Brian ,  MARKMAN, Ivonete

Inventor： HEO, Seo, Weon ,  PARK, Jeongsoon ,  GELFAND, Saul, Brian ,  MARKMAN, Ivonete

IPC: H04N

CPC classification number: H04N21/4382 ,  H03M13/256 ,  H03M13/3746 ,  H03M13/6331 ,  H04L1/0055 ,  H04L1/006 ,  H04L1/208 ,  H04L25/03057 ,  H04L2025/03382 ,  H04L2025/0349 ,  H04L2025/037 ,  H04L2025/03732 ,  H04N5/211 ,  H04N5/4401

Abstract: A concatenated equalizer/trellis decoding system for use in processing a High Definition Television signal. The re-encoded trellis decoder output (6), rather than the equalizer output (19), is used as an input to the feedback filter (8) of the decision feedback equalizer (4). Hard or soft decision trellis decoding may be applied. In order to account for the latency associated with trellis decoding and the presence of twelve interleaved decoders, feedback from the trellis decoder to the equalizer is performed by replicating the trellis decoder and equalizer hardware in a module (1) that can be cascaded in as many stages as needed to achieve the desired balance between complexity and performance. The present system offers an improvement of between 0.6 and 1.9 decibels. Cascading of two modules (1) is usually sufficient to achieve most of the potential performance improvement.

Abstract translation: 用于处理高分辨率电视信号的级联均衡器/网格解码系统。 重新编码的网格解码器输出（6）而不是均衡器输出（19）被用作到判决反馈均衡器（4）的反馈滤波器（8）的输入。 可以应用硬或软决策网格解码。 为了解决与网格解码相关联的延迟和存在十二个交错解码器，从网格解码器到均衡器的反馈是通过复制模块（1）中的网格解码器和均衡器硬件来实现的，模块（1）可以被级联在尽可能多的 根据需要分阶段实现复杂性和性能之间的理想平衡。 本系统提供0.6至1.9分贝之间的改进。 两个模块（1）的级联通常足以实现大部分潜在的性能改进。

公开(公告)号：WO2003090349A1

公开(公告)日：2003-10-30

申请号：PCT/US2003/011002

申请日：2003-04-11

Applicant: THOMSON LICENSING S.A. ,  BOUILLET, Aaron, Reel

Inventor： BOUILLET, Aaron, Reel

IPC: H03H7/30

CPC classification number: H04L25/03025 ,  H04L25/03019 ,  H04L2025/03382 ,  H04L2025/037 ,  H04N5/211 ,  H04N17/004

Abstract: A system for monitoring the output (28) of an adaptive channel equalizer (20) in order to determine if convergence has been achieved. A slicer (29) samples data from the equalizer (20) during a predetermined period. The output data (30) from the slicer (29) is forwarded to a microprocessor (31) in order to apply a test standard to the slicer data. For example, if one of every possible transmitted symbol is detected by the microprocessor (31), convergence is assumed to have occurred. If the test criterion is not met, a reset signal (32) is sent to the equalizer (20).

Abstract translation: 一种用于监视自适应信道均衡器（20）的输出（28）的系统，以便确定是否已经实现了收敛。 限幅器（29）在预定时段期间从均衡器（20）采样数据。 来自限幅器（29）的输出数据（30）被转发到微处理器（31），以便将测试标准应用于限幅器数据。 例如，如果微处理器（31）检测到每个可能的发送符号中的一个，则假定发生收敛。 如果不满足测试标准，则将复位信号（32）发送到均衡器（20）。

公开(公告)号：WO2002091734A1

公开(公告)日：2002-11-14

申请号：PCT/IB2002/001489

申请日：2002-04-24

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： KOO, David

IPC: H04N5/21

CPC classification number: H04N5/211 ,  H04L25/03006 ,  H04L2025/03382 ,  H04L2025/03789

Abstract: A novel echo cancellation reference ("ECR") training signal is inserted into the current ATSC 8 VSB data stream to achieve improved echo rejection while maintaining compatibility with the ATSC 8 VSB digital ATV standard. The novel ECR training signal is also suitable for other multipath or dispersive digital communication channels. A pre-equalization subsystem is included in the digital ATV system as a front end to the VSB receiver, and is trained with preferably the novel ECR training signal. One type of pre-equalization subsystem provides a fully ATSC compliant signal at its output, and therefore is particularly useful with standard VSB receivers. Another type of pre-equalization system provides a signal at its output which is ATSC compliant in some respects but which retains the ECR signal, and therefore is particularly useful for signal relays, analysis purposes, and other applications in which the residual channel information is important.

Abstract translation: 将新的回波消除参考（“ECR”）训练信号插入到当前ATSC 8 VSB数据流中，以实现改进的回波抑制，同时保持与ATSC 8 VSB数字ATV标准的兼容性。 新颖的ECR训练信号也适用于其他多径或色散数字通信通道。 预均衡子系统作为VSB接收机的前端包括在数字ATV系统中，并且优选地用新颖的ECR训练信号进行训练。 一种类型的预均衡子系统在其输出端提供完全符合ATSC标准的信号，因此对标准VSB接收机特别有用。 另一种类型的预均衡系统在其输出端提供信号，其在某些方面符合ATSC标准，但保留了ECR信号，因此特别适用于信号继电器，分析目的以及剩余信道信息重要的其他应用 。

公开(公告)号：WO02023842A1

公开(公告)日：2002-03-21

申请号：PCT/US2001/028758

申请日：2001-09-10

IPC: H04B7/005 ,  H04B3/06 ,  H04L25/03 ,  H04N5/21 ,  H04N5/44

CPC classification number: H04N5/211 ,  H04L25/03057 ,  H04L25/0307 ,  H04L25/03987 ,  H04L2025/03382 ,  H04L2025/03503 ,  H04L2025/0363 ,  H04L2025/03687 ,  H04N5/21 ,  H04N5/4401

Abstract: An apparatus (320) and method is disclosed for using adaptive algorithms to exploit sparsity in target weight vectors in an adaptive channel equalizer (300). An adaptive algorithm comprises a selected value of a prior and a selected value of a cost function. The present invention comprises algorithms adapted for calculating adaptive equalizer coefficients for sparse transmission channels. The present invention provides sparse algorithms in the form of a Sparse Least Mean Squares (LMS) algorithm and a Sparse Constant Modulus Algorithm (CMA) and a Sparse Decision Directed (DD) algorithm.

Abstract translation: 公开了一种使用自适应算法来利用自适应信道均衡器（300）中的目标加权向量中的稀疏性的装置（320）和方法。 自适应算法包括成本函数的先前值和选定值的选定值。 本发明包括适用于计算稀疏传输信道的自适应均衡器系数的算法。 本发明以稀疏最小均方（LMS）算法和稀疏恒模模算法（CMA）和稀疏决策定向（DD）算法的形式提供稀疏算法。

公开(公告)号：WO01097475A1

公开(公告)日：2001-12-20

申请号：PCT/EP2001/005804

申请日：2001-05-21

IPC: H03H17/00 ,  H03H17/06 ,  H04B3/06 ,  H04B3/10 ,  H04B7/005 ,  H04L25/03 ,  H04N5/21

CPC classification number: H04N5/211 ,  H04L25/03057 ,  H04L2025/03382 ,  H04L2025/03503 ,  H04L2025/03617 ,  H04L2025/03789

Abstract: An adaptive channel equalizer with adaptive coefficients for compensating for long delays multipaths and distortions. A training sequence is periodically sent over the channel and the adaptive coefficients of the equalizer are periodically updated from the equalization of the transmitted training sequence. The equalization of the training sequence is performed separately and in parallel to the equalization of the remaining transmitted data by the equalizer.

Abstract translation: 具有自适应系数的自适应信道均衡器，用于补偿长延迟多径和失真。 通过信道周期性地发送训练序列，并且均衡器的自适应系数从发送的训练序列的均衡中周期性地更新。 训练序列的均衡是通过均衡器与剩余的发送数据的均衡并行执行的。

公开(公告)号：WO00027066A2

公开(公告)日：2000-05-11

申请号：PCT/US1999/026084

申请日：1999-11-03

IPC: H04B1/68 ,  H04L25/03 ,  H04L27/00 ,  H04L27/02 ,  H04L27/06 ,  H04L27/227 ,  H04L27/34 ,  H04L27/38 ,  H04N5/21 ,  H04N5/44 ,  H04N5/455 ,  H04N5/46 ,  H04N11/00 ,  H04L7/00

CPC classification number: H04N5/21 ,  H04B1/68 ,  H04L25/03057 ,  H04L27/02 ,  H04L27/066 ,  H04L27/2273 ,  H04L27/3427 ,  H04L27/3827 ,  H04L2025/03382 ,  H04L2025/0342 ,  H04L2025/0349 ,  H04L2025/03503 ,  H04L2027/0032 ,  H04L2027/0042 ,  H04L2027/0057 ,  H04L2027/0067 ,  H04L2027/0087 ,  H04N5/211 ,  H04N5/44 ,  H04N5/4401 ,  H04N5/455 ,  H04N5/46 ,  H04N11/002

Abstract: A television receiver system capable of receiving and demodulating television signal information content that has been modulated and transmitted in accordance with a variety of modulation formats is disclosed. In particular, the system is able to accommodate receipt and demodulation of at least 8 and 16-VSB modulated signals in order to support US HDTV applications, as well as 64 and 256-QAM modulated signals, for European and potential US CATV implementations. The system includes carrier and timing recovery loops adapted to operate on an enhanced pilot signal as well as decision directed carrier phase recovery loops. Phase detectors operate on I and Q rail signals, or generate a Q rail from a Hilbert transform of the I rail. Decision directed loops incorporate a trellis decoder in order to operate on sequence estimated decisions for improved reliability in poor SNR environments.

Abstract translation: 本发明涉及一种能够接收和解调已经以不同调制格式进行调制和发送的电视信号的信息内容的电视接收机系统。 尤其是，该系统支持至少8和16个BLA调制信号的接收和解调，使其能够支持北美HDTV格式的应用以及64和256调制信号。 BLA符合欧洲标准，最终符合北美（CATV）。 该系统包括载波恢复和定时环路，用于增强导频信号以及面向决策的载波相位恢复环路。 相位检测器根据I和Q电源信号工作，或根据I信号的希尔伯特变换产生Q电源。决策导向回路包括一个晶格解码器，用于根据决定进行操作。 在不利的信噪比环境下提高可靠性的序列估计。