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21. 发明申请

WO2010072963A1 DECOMPOSITION POLYPHASE D ' UN BANC DE FILTRES POUR OFDM SURECHANTILLONNE 审中-公开
标题翻译：用于OVERSAMPLED OFDM的滤波器的多相分解
公开(公告)号：WO2010072963A1
公开(公告)日：2010-07-01
申请号：PCT/FR2009/052641
申请日：2009-12-21
申请人： FRANCE TELECOM , SIOHAN, Pierre , PINCHON, Didier
发明人： SIOHAN, Pierre , PINCHON, Didier
IPC分类号： H04L27/26 , H03H17/02
CPC分类号： H04L27/2652 , H03H17/0266 , H03H17/0275 , H03H17/0664 , H03H17/0685 , H04L27/2644
摘要： L'invention concerne un dispositif de démodulation d'un signal multiporteuse suréchantillonné. Selon l'invention, un tel dispositif comprend Δ étages, Δ étant un entier supérieur ou égal à 1, alimentés par des données reçues représentatives de données source, chacun desdits étages comprenant un banc de filtres d'analyse présentant N 0 branches et un facteur de décimation égal à M 0 , avec N 0 et M 0 premiers entre eux et M 0 > 1, un banc de filtres d'analyse comprenant une matrice de décomposition V (i) (z) et une matrice de Fourier F N0 . La matrice de décomposition est une matrice para-unitaire, dont certains coefficients sont forcés à zéro selon un critère prédéterminé tenant compte dudit facteur de décimation M 0 et du nombre de branches N 0 , de façon à permettre une reconstruction parfaite desdites données source.
摘要翻译：本发明涉及一种用于解调过采样多载波信号的装置。根据本发明，该装置包括：阶段？是一个高于或等于1的整数，提供表示源数据的接收数据，每个所述级包括具有N 0个分支的分析滤波器台和等于M 0的抽取因子，N 0和M 0是素数相对并且M 0> 1，其中分析滤波器台包括分解矩阵V（i）（z）和傅立叶矩阵F N0。分解矩阵是根据考虑到所述抽取因子M 0和分支数N 0的预定标准将某些系数强制为零的对齐单元矩阵，以便能够完美地重构源数据。

22. 发明申请

WO2006003567A1 JITTER-FREE SAMPLE RATE CONVERSION 审中-公开
标题翻译：无抖动速率转换
公开(公告)号：WO2006003567A1
公开(公告)日：2006-01-12
申请号：PCT/IB2005/052074
申请日：2005-06-23
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DE BUYS, Frans, V., F.
发明人： DE BUYS, Frans, V., F.
IPC分类号： H03H17/02
CPC分类号： H03H17/0219 , H03H17/0275 , H03H17/0277 , H03H17/0628 , H03H17/0685
摘要： A method and apparatus are described for asynchronous sample rate conversion, in particular those which use an interpolating filter, especially a polyphase interpolating filter (FB4). The input and output signals have jitter but the polyphase branch signals have no or reduced jitter due to the operation of a jitter removing means such as a phase locked loop. The jitter is reduced only in the polyphase branch signals. Various methods are described for reducing the jitter.
摘要翻译：描述了用于异步采样率转换的方法和装置，特别是使用内插滤波器，特别是多相内插滤波器（FB4）的方法和装置。输入和输出信号具有抖动，但是由于诸如锁相环之类的抖动消除装置的操作，多相分支信号没有抖动或减少抖动。抖动仅在多相分支信号中降低。描述了减少抖动的各种方法。

23. 发明申请

WO2004098054A1 DIGITAL FILTER CONFIGURATION 审中-公开
标题翻译：数字滤波器配置
公开(公告)号：WO2004098054A1
公开(公告)日：2004-11-11
申请号：PCT/IB2004/001226
申请日：2004-04-22
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N. V. , MATSCHULLAT, Frank
发明人： MATSCHULLAT, Frank
IPC分类号： H03H17/02
CPC分类号： H03H17/0275 , H03H17/0227 , H03H17/0621
摘要： A digital filter configuration for the filtration of a digital video signal, wherein the functions of a zoom filter, in the form of a low-pass filter, which is a polyphase filter, and of at least one peaking filter, in the form of a high-pass filter, are realized, wherein the functions of the two filters are realized in a combined filter (1 - 17) in an integrated circuit in a manner such that, for each phase of the zoom filter to be set, combined filter coefficients are calculated from filter coefficients stored for this phase of the zoom filter and from filter coefficients stored for the peaking filter, which combined filter coefficients are applied to the video data to be filtered in a filtration process, so that both filtration functions are executed with the combined filter coefficients in this filtration process.
摘要翻译：一种用于过滤数字视频信号的数字滤波器配置，其中以低通滤波器的形式的多相滤波器的形式的缩放滤波器的功能和至少一个峰值滤波器的形式为高通滤波器，其中两个滤波器的功能以集成电路中的组合滤波器（1-7）实现，使得对于要设置的变焦滤波器的每个相位，组合的滤波器系数由存储在变焦滤波器的这个相位的滤波器系数以及从峰值滤波器存储的滤波器系数中计算，该滤波器系数被应用于在滤波过程中被滤波的视频数据，使得两个滤波函数都被执行在这个过滤过程中组合滤波器系数。

24. 发明申请

WO2004055983A8 DIGITAL SAMPLING FREQUENCY CONVERTER 审中-公开
标题翻译：数字采样频率转换器
公开(公告)号：WO2004055983A8
公开(公告)日：2004-09-23
申请号：PCT/IB0305813
申请日：2003-12-05
申请人： KONINKL PHILIPS ELECTRONICS NV , PASQUIER LAURENT , DURANTON MARC , ZHAO QIN
发明人： PASQUIER LAURENT , DURANTON MARC , ZHAO QIN
IPC分类号： A01G9/10 , H03H17/02 , H03H17/06
CPC分类号： H03H17/0275 , H03H17/0294 , H03H17/0685
摘要： The present invention relates to a converter converting an input digital signal into an output digital signal. Said converter comprises in particular a set of shift registers able to contain samples of the input or output digital signal. It also comprises a calculation unit able to supply a shift signal (4) to said set of registers. Said calculation unit comprises a first storage unit (51) able to contain a value of a conversion ratio or of its inverse, so that the value stored is between 0 and 1. It also comprises a second storage unit (52) able to contain, at a cycle time i+1, i being an integer, a future signal (8) equal to a sum of a current signal (7) contained in the second unit at a cycle time i and of the content of the first storage unit. The shift signal then results from an exclusive OR function (54) between a most significant bit of the current signal (71) and a most significant bit of the future signal (81).
摘要翻译：本发明涉及将输入数字信号转换为输出数字信号的转换器。所述转换器特别包括能够包含输入或输出数字信号的采样的一组移位寄存器。它还包括能够向所述寄存器组提供移位信号（4）的计算单元。所述计算单元包括能够包含转换比值或其逆的第一存储单元（51），使得存储的值在0和1之间。它还包括第二存储单元（52）在周期时间i + 1，i是整数，等于在循环时间i包含在第二单元中的当前信号（7）和第一存储单元的内容之和的未来信号（8）。然后，移位信号由当前信号（71）的最高有效位和未来信号（81）的最高有效位之间的异或功能（54）产生。

25. 发明申请

WO2002089334A1 RESAMPLING SYSTEM AND APPARATUS 审中-公开
标题翻译：替代系统和设备
公开(公告)号：WO2002089334A1
公开(公告)日：2002-11-07
申请号：PCT/US2002/014278
申请日：2002-05-02
申请人： PORTALPLAYER, INC.
发明人： CHU, Ke-Chiang
IPC分类号： H03M7/00
CPC分类号： H03H17/0275 , G11B20/10527 , H03H17/0621 , H03H17/0628
摘要： A filter system (10) and method are provided that is particular applicable to the resampling of a signal, such as a digital audio signal. The filtering method in accordance with the invention may use as a nearest neighbor strategy to reduce the complexity and cost of the filter (12) without reducing the precision of the resampling.
摘要翻译：提供了一种特别适用于诸如数字音频信号的信号的再采样的滤波器系统（10）和方法。根据本发明的滤波方法可以用作最近邻策略来降低滤波器（12）的复杂性和成本，而不降低重采样的精度。

26. 发明申请

WO9819396A3 SAMPLE RATE CONVERSION 审中-公开
标题翻译：样本速率转换
公开(公告)号：WO9819396A3
公开(公告)日：1998-06-25
申请号：PCT/IB9701166
申请日：1997-09-26
申请人： PHILIPS ELECTRONICS NV , PHILIPS NORDEN AB
发明人： VAN DALFSEN AGE JOCHEM , STESSEN JEROEN HUBERT J C , JANSSEN JOHANNES GERARDUS WILH
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06 , H04N5/14 , H04N5/45
CPC分类号： H03H17/0294 , H03H17/0275 , H03H17/0657 , H03H17/0664 , H04N5/14 , H04N5/45
摘要： A filter device for changing a sample rate of a discrete representation, e.g. to change a size of an image signal (I), comprises a plurality of multipliers (Mi), summing circuitry (Ai) coupled to outputs of the multipliers (Mi), and a plurality of delay cells (Di) arranged for repeatedly supplying identical values to corresponding ones of the multipliers (Mi) during a number of times corresponding to an expansion ratio by which the discrete representation (I) is to be expanded, or for, in cooperation with the summing circuitry (Ai, Ai'), accumulating output values from the multipliers (Mi) during a number of times corresponding to a compression ratio by which the discrete representation (I) is to be compressed.

27. 发明申请

WO2015038578A3 SYSTEM ASPECTS OF AN AUDIO CODEC 审中-公开
标题翻译：音频编解码器的系统方面
公开(公告)号：WO2015038578A3
公开(公告)日：2015-05-07
申请号：PCT/US2014054899
申请日：2014-09-10
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： GROESCHEL ALEXANDER , POPP JENNS , WOLTERS MARTIN , RIEDMILLER JEFFREY , WARD MICHAEL , ROEDEN KARL JONAS , HOERICH HOLGER , LINZMEIER KARSTEN , FRIEDRICH TOBIAS
IPC分类号： H03H17/02 , G10L19/008 , G10L19/16 , G10L25/18 , H03H17/04 , H04S3/02
CPC分类号： G10L19/24 , G10L19/005 , G10L19/008 , G10L19/167 , G10L25/18 , H03H17/0275 , H03H17/0277 , H03H17/0455 , H04S3/02 , H04S2400/03 , H04S2400/05
摘要： The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.
摘要翻译：本文件涉及使用合理的重采样因子设计用于重采样器的抗混叠和/或抗成像滤波器。特别地，本文件涉及用于实现具有降低的计算复杂度的这种抗混叠和/或抗成像滤波器的方法。另外，本文件涉及音频编码和解码系统的其它方面，诸如多声道音频信号的声道之间的相位关系和/或编码音频信号的比特流的结构。

28. 发明申请

WO2013103562A1 SELF-CORRECTING MULTIRATE FILTER 审中-公开
标题翻译：自校正多路滤波器
公开(公告)号：WO2013103562A1
公开(公告)日：2013-07-11
申请号：PCT/US2012/071605
申请日：2012-12-26
申请人： MOTOROLA MOBILITY LLC
发明人： ADUT, Victor, , AGAMI, Gregory M., , KIM, Yun H., , MA, Wei Chuan,
IPC分类号： H03H17/02 , H03H17/06
CPC分类号： H03H17/0628 , H03H17/0275
摘要： A system includes a polyphase multirate filter and a controller which, responsive to detecting a data stream: measures a current phase relationship between a current resampling filter input clock signal and a current multirate output clock signal; identifies, based on a mapping of the measured phase relationship within a pre-generated quantized mapping table, an initial polyphase filter coefficient index corresponding to the measured phase relationship; selects, based on the initial polyphase filter coefficient index identified, a corresponding polyphase filter component from within the multirate filter; configures the multirate filter to pass data from the data stream through the corresponding polyphase filter component to generate an initial output data sample; updates the initial polyphase filter coefficient index to a calculated next polyphase filter coefficient index value, in response to a request for generation of a next output data sample; and self-corrects the multirate filter responsive to a pre-identified error condition.
摘要翻译：系统包括多相多速率滤波器和控制器，其响应于检测数据流：测量当前重采样滤波器输入时钟信号和当前多速率输出时钟信号之间的当前相位关系; 基于所测量的相位关系在预先生成的量化映射表内的映射来识别对应于所测量的相位关系的初始多相滤波器系数指数; 基于所识别的初始多相滤波器系数索引，选择来自多速率滤波器内的相应多相滤波器组件; 配置多速率滤波器以将来自数据流的数据通过相应的多相滤波器组件生成初始输出数据样本; 响应于产生下一个输出数据样本的请求，将初始多相滤波器系数索引更新为计算的下一个多相滤波器系数索引值; 并响应于预先识别的错误条件自我校正多速率滤波器。

29. 发明申请

WO2012028897A1 MULTI-BRANCH RATE CHANGE FILTER 审中-公开
标题翻译：多分支变更过滤器
公开(公告)号：WO2012028897A1
公开(公告)日：2012-03-08
申请号：PCT/IB2010/002148
申请日：2010-08-31
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , LAPORTE, Pierre-Andre
发明人： LAPORTE, Pierre-Andre
IPC分类号： H03H17/06 , H03H17/02
CPC分类号： H03H17/0621 , H03H17/0223 , H03H17/0275 , H03H17/0685 , H03H2017/0247
摘要： The present invention relates to a rate change filter having multiple branches. The multi- branch rate change filter of the present invention achieves higher effective output rates by processing the input sample stream in two or more parallel filter branches with offset states.
摘要翻译：本发明涉及具有多个分支的速率变化滤波器。本发明的多分支速率变化滤波器通过在具有偏移状态的两个或更多个并行滤波器分支中处理输入采样流来实现更高的有效输出速率。

30. 发明申请

WO2008005151A8 DIGITAL NON-INTEGER SAMPLE/HOLD IMPLEMENTED USING VIRTUAL FILTERING 审中-公开
标题翻译：使用虚拟过滤实现的数字非整数样本/保持
公开(公告)号：WO2008005151A8
公开(公告)日：2008-06-05
申请号：PCT/US2007013608
申请日：2007-06-08
申请人： CIRRUS LOGIC INC
发明人： DING LEI , MELANSON JOHN L , FEI XIAOFAN , DUEWER BRUCE
IPC分类号： H03H17/06
CPC分类号： H03H17/0685 , H03H17/0275 , H03H17/0614

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