专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1997038495A1 DATA BLOCK CONVOLUTIONAL CODING DEVICE AND METHOD, AND CORRESPONDING DECODING METHOD AND DEVICE 审中-公开
标题翻译：数据块转换编码装置及方法及相关解码方法及装置
公开(公告)号：WO1997038495A1
公开(公告)日：1997-10-16
申请号：PCT/FR1997000607
申请日：1997-04-03
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , BERROU, Claude , JEZEQUEL, Michel
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H03M13/12
CPC分类号： H04L1/0059 , E05B15/0205 , H03M13/23 , H03M13/2707 , H03M13/2771 , H03M13/2957 , H03M13/296 , H03M13/2984 , H03M13/299 , H03M13/2993 , H03M13/2996 , H03M13/39 , H04L1/0043 , H04L1/0052 , H04L1/0066 , H04L1/0068
摘要： A method and device for the convolutional coding of data blocks, each consisting of a predetermined number N of source data, wherein each of said source data is input twice in the same convolutional coder (22) implementing an L period generator polynomial, in an order such that the two inputs of the same source data di are separated by the input of (pi.L)-1 other source data, pi being an integer other than zero. The invention also discloses a corresponding decoding method and device. It is particularly useful for transmitting short messages, for example in radiotelephone, satellite communication or computerised telecommunication (such as the Internet network) applications.
摘要翻译：一种用于数据块的卷积编码的方法和装置，每个数据块由预定数量的源数据组成，其中每个所述源数据在实现L周期生成多项式的同一卷积编码器（22）中按顺序输入两次，使得相同源数据di的两个输入由（pi.L）-1个其他源数据的输入分隔，pi是除零之外的整数。本发明还公开了一种相应的解码方法和装置。对于发送短消息特别有用，例如在无线电话，卫星通信或计算机化电信（例如因特网）应用中。

2. 发明申请

WO1998030979A1 PERCEPTUAL IMAGE DISTORTION EVALUATION 审中-公开
标题翻译： PERCEPTUAL图像失真评估
公开(公告)号：WO1998030979A1
公开(公告)日：1998-07-16
申请号：PCT/FR1997002222
申请日：1997-12-05
申请人： TELEDIFFUSION DE FRANCE , FRANCE TELECOM , BLIN, Jean, Louis
发明人： TELEDIFFUSION DE FRANCE , FRANCE TELECOM
IPC分类号： G06T09/00
CPC分类号： G06T9/00
摘要： The invention concerns a method for evaluating perceptual image quantization distortion in a fixed image. This method takes into account the specific characteristics of the visual processing of an image to obtain the most accurate evaluation, based on the difference between the reference image (9) and the tested image (8) divided into a plurality of image blocks (I). On the basis of each image block (I), the method consists in computing (1) the luminance point Li,j and the adaptation luminance La, in a non-linear processing (2; 10) and in computing the intermediate contrast (2; 11) DELTA Li,j* = Li,j*-La*, in filtering it (3; 12) according to the spatial orientation of the frequencies, in separating (4;13) the frequencies according to orientation, in a second non linear processing (5; 14), and by computing the point-to-point difference weighted by frequency spatial orientation between the obtained intermediate contrast values, in deducing therefrom the value for each tested image block, the local perceptual contrast distortion.
摘要翻译：本发明涉及一种用于评估固定图像中的感知图像量化失真的方法。该方法基于分割为多个图像块（I）的参考图像（9）和被测图像（8）之间的差异，考虑图像的可视处理的特定特征以获得最准确的评估，。在每个图像块（I）的基础上，该方法包括在非线性处理（2; 10）和计算中间对比度（2）中计算（1）亮点Li，j和适应亮度La ; 11）DELTA Li，j * = Li，j * -La *，根据频率的空间取向在根据取向分离（4; 13）频率时对其进行滤波（3; 12）通过计算由获得的中间对比度值之间的频率空间取向加权的点对点差异，从而推算出每个测试图像块的值，本地感知对比度失真。

3. 发明申请

WO1996035266A1 ADAPTIVE SUB-BAND FILTERING 审中-公开
标题翻译：自适应滤波滤波
公开(公告)号：WO1996035266A1
公开(公告)日：1996-11-07
申请号：PCT/FR1996000664
申请日：1996-05-02
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , DE COURVILLE, Marc , DUHAMEL, Pierre , PALICOT, Jacques , MADEC, Philippe
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H04B03/21
CPC分类号： H03H21/0027 , H04B3/21
摘要： A digital signal adaptive filtering method and device are described. The transmitted signal (xn), which is representative of a post-transmission distorted source signal (dn), is adaptively filtered (W*) (1001) to generate a filtered transmitted digital signal (yn). An error signal (en) is formed (1002), which is representative of the algebraic difference between the source signal (dn) and the filtered transmitted digital signal (yn), and which is subdivided (1003), through an orthogonal breaking-up step resulting in a number (N) of frequency sub-bands, into sub-band error signals (ei,n), i ELEMENT [0,N-1]. Each sub-band error signal is sub-sampled in a ratio of (N) and the sub-sampled sub-band error signals (eik) are weighted (1004) with coefficients ( lambda i). The transmitted digital signal (xn) is subdivided (1005) into (N) sub-bands (xi,n) and an adaptation function ( DELTA W*) of the adaptive filter is established (1007) as the sum of the product of each conjugated sub-band component of the transmitted digital signal and the sub-sampled weighted sub-band error signal, to which an adaptive pitch ( mu ) has been allocated. The invention is useful for speech signal echo equalising and cancelling.
摘要翻译：描述了数字信号自适应滤波方法和装置。代表发射后失真源信号（dn）的发射信号（xn）被自适应滤波（W *）（1001）以产生经滤波的发射数字信号（yn）。形成了代表源信号（dn）和滤波后的发送数字信号（yn）之间的代数差，并通过正交分解（1003）进行细分的误差信号（en1）（1002）步骤，产生一个（N）个频率子带，成为子带误差信号（ei，n），iELEMENT [0，N-1]。每个子带误差信号以（N）的比率被子采样，并且子系数（λi）对子采样子带误差信号（eik）进行加权（1004）。发送的数字信号（xn）被细分为（100）为（N）个子带（xi，n），并且自适应滤波器的自适应函数（DELTA W *）被建立为（1007），作为每个发送数字信号的共轭子带分量和被分配了自适应音调（mu）的子采样加权子带误差信号。本发明对于语音信号回波均衡和消除是有用的。

4. 发明申请

WO1995028058A1 METHOD FOR BROADCASTING GRADUAL CONDITIONAL ACCESS PROGRAMMES WITH DATA FLOW SEPARATION, AND RECEIVER THEREFOR 审中-公开
标题翻译：使用数据流分离方法广泛应用条件访问方案及其接收方法
公开(公告)号：WO1995028058A1
公开(公告)日：1995-10-19
申请号：PCT/FR1995000435
申请日：1995-04-05
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , GIACHETTI, Jean-Luc , GUILLOU, Louis , PACAUD, Jean-Claude
IPC分类号： H04N07/167
CPC分类号： H04N21/23476 , H04N7/1675
摘要： A method for broadcasting gradual conditional access programmes with data flow separation, and a receiver therefor. A basic flow is formed by providing groups of m successive multiplex elements and a complementary flow is formed by providing groups of p successive multiplex elements. The method is useful in pay television.
摘要翻译：用于广播具有数据流分离的逐步条件访问程序的方法及其接收机。通过提供一组m个连续复用元件形成基本流程，并且通过提供p个连续多路复用元件组来形成互补流。该方法在付费电视中很有用。

5. 发明申请

WO1997009782A1 ADAPTIVE DIGITAL FILTERING PROCESS IN THE FREQUENCY DOMAIN 审中-公开
标题翻译：频域中的自适应数字滤波过程
公开(公告)号：WO1997009782A1
公开(公告)日：1997-03-13
申请号：PCT/FR1996001378
申请日：1996-09-09
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , BERBERIDIS, Constantinos , PALICOT, Jacques
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H03H21/00
CPC分类号： H03H21/0027
摘要： The invention concerns an adaptive filtering process for time input signals (X(n)) in the frequency domain. Filtering is carried out on blocks (xm(k)) of m successive signals ((x(n)), ... x (n+m-1))), by multiplying the Fourier transform (X2m(k)) of the input signal blocks by blocks (W2m(k)) of weighting coefficients in the frequency domain, the coefficient blocks being calculated recursively from preceding coefficient blocks and from first and second corrective terms (C2m (k), C2m (k)) obtained from output signals (ym(k)) corresponding to the filtered input signals and from the Fourier transform of a model of the input (bp+1).
摘要翻译：本发明涉及频域中的时间输入信号（X（n））的自适应滤波处理。在m个连续信号（（x（n）），... x（n + m-1））的块（xm（k））上进行滤波，通过将傅立叶变换（X2m（k））乘以所述输入信号以频域的加权系数块（W2m（k））为单位，所述系数块是从先前系数块递归计算的，以及来自第一和第二校正项（C2m1（k），C2m2）（k +）），并从输出信号（ym（k））获得的输入信号（ym（k））和输入信号（bp + 1）的傅立叶变换。

6. 发明申请

WO1997009781A1 DECISION FEEDBACK FILTER DEVICE IN THE FREQUENCY DOMAIN 审中-公开
标题翻译：决策反馈滤波器在频域中的设备
公开(公告)号：WO1997009781A1
公开(公告)日：1997-03-13
申请号：PCT/FR1996001377
申请日：1996-09-09
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , BERBERIDIS, Constantinos , PALICOT, Jacques
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H03H17/02
CPC分类号： H04L25/03159 , H03H17/0213 , H04L2025/03522
摘要： The invention concerns a decision feedback filter device comprising a direct filter (FF) and a feedback filter (FB) for producing corresponding decisions (d(n)) from input symbols (x(n)), the direct filter (FF) receiving the input symbols as input, and the feedback filter (FB) receiving the decisions (d(n)) as input. The direct filter (FF) filters in the frequency domain blocks of M input symbols, and the feedback filter (FB) filters in the frequency domain blocks of L decisions, L being less than M. A device according to the invention enables interference between symbols caused by the reception of echoes to be rectified.
摘要翻译：本发明涉及一种包括直接滤波器（FF）和反馈滤波器（FB）的判决反馈滤波器装置，用于从输入符号（x（n））产生相应的判决（d（n）），直接滤波器（FF）输入符号作为输入，反馈滤波器（FB）接收决定（d（n））作为输入。直接滤波器（FF）在M个输入符号的频域块中滤波，并且在L个判决的频域块中的反馈滤波器（FB）滤波器L小于M.根据本发明的装置能够实现符号之间的干扰由接收到的回音引起的纠正。

7. 发明申请

WO1996023382A1 CALL INTERRUPTION BETWEEN TWO TERMINALS BY MEANS OF A CALL FROM A THIRD TERMINAL 审中-公开
标题翻译：通过来自第三终端的呼叫，两个终端之间的呼叫中断
公开(公告)号：WO1996023382A1
公开(公告)日：1996-08-01
申请号：PCT/FR1996000117
申请日：1996-01-24
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , LOUVEL, Bernard
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H04M03/20
CPC分类号： H04M3/428 , H04M1/57 , H04M3/20 , H04M11/085
摘要： A method for interrupting a voice and/or data transmission call made on an analogue link between two terminals (Tai) via a switching centre (C), wherein a user alert signal (SAU) and a terminal alert signal (SAT) are transmitted via the switching centre to one of the terminals. Between these signals, the call is restored (TC1) between the terminals. To detect the terminal alert signal (SAT), the terminal searches, over a predetermined time, for a pattern transmitted by the switching centre (C) which includes a sequence of a first quiet signal having less than a predetermined power during a first predetermined quiet time, the terminal alert signal (SAT), and a second quiet signal analogous to the first, during a second predetermined quiet time.
摘要翻译：一种用于中断通过交换中心（C）在两个终端（Tai）之间的模拟链路上进行语音和/或数据传输呼叫的方法，其中，经由用户警报信号（SAU）和终端警报信号（SAT）经由交换中心到其中一个终端。在这些信号之间，终端之间的呼叫被恢复（TC1）。为了检测终端警报信号（SAT），终端在预定时间内搜索由切换中心（C）发送的模式，其中包括在第一预定安静期间具有小于预定功率的第一安静信号的序列时间，终端警报信号（SAT）以及类似于第一安静信号的第二安静信号。

8. 发明申请

WO1997005702A1 DATA ELEMENT INTERLEAVING/DEINTERLEAVING 审中-公开
标题翻译：数据元素交互/删除
公开(公告)号：WO1997005702A1
公开(公告)日：1997-02-13
申请号：PCT/FR1996001135
申请日：1996-07-18
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , COMBELLES, Pierre , CASTELAIN, Damien , CALLONNEC, Denis
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H03M13/22
CPC分类号： H03M13/2785
摘要： To interleave or deinterleave data elements in alternately transmitted first and second blocks (B2k, B2k+1) each having N data elements of rank n from 0 to N-1, where N is an integer, data elements having ranks 0, ...n, ...N in the first blocks (B2k) are ordered in a series of ranks A(0), ...A(n), ...A(N), and data elements having ranks 0, ...n, ...N in the second blocks (B2k+1) are ordered in a series of ranks A (0), ...A (n), ... A (N). A and A are different functions whereby A (A(a)) = n.
摘要翻译：为了将N个数据元素从0到N-1的交替发送的第一和第二块（B2k，B2k + 1）中的数据元素进行交织或解交织，其中N是整数，数据元素具有0，...，第一块（B2k）中的n，... N以一系列等级A（0），... A（n），... A（N）以及排列为0的数据元素排序。第二块（B2k + 1）中的.n，... N以一系列等级A <-1（0），... A <-1（n），... A < 1>（N）。 A和A <-1是不同的函数，由此A -1（A（a））= n。

9. 发明申请

WO1996022657A1 DIGITAL TELEVISION SIGNAL CODING RATE REGULATION METHOD USING TIME PREDICTION AND MOTION COMPENSATION 审中-公开
标题翻译：使用时间预测和运动补偿的数字电视信号编码率调节方法
公开(公告)号：WO1996022657A1
公开(公告)日：1996-07-25
申请号：PCT/FR1996000058
申请日：1996-01-12
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , THOMAS, Vincent
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H04N07/50
CPC分类号： H04N19/179 , H04N19/115 , H04N19/126 , H04N19/146 , H04N19/152 , H04N19/176 , H04N19/61
摘要： A method for the DCT coding rate regulation and motion-compensated time prediction of a digital television signal. The current Tn and next Tn+1 frames are subjected to a quantization process (101) with a quantization pitch qn, qn+1 generating a frame rate dn, dn+1, whereafter the method comprises, for each current frame, approximating (102) the law of variation of the coding rate logarithm to a linear function of the quantization pitch logarithm Log(dn) = a - 1/m Log(qn), where a and m are substantially constant test values. The quantization pitch qn of the current frame is adapted (103) to a value qn+1 for the next frame by an adapting coefficient r, qn+1 = r.qn with r = (dn/dc) where dc is a target rate for successively adjusting the rate dn+1 of the next frame to the value of the target rate dc. The method is useful for coding conventional or high-definition digital television signals.
摘要翻译：一种用于数字电视信号的DCT编码速率调节和运动补偿时间预测的方法。对当前Tn和下一个Tn + 1帧进行量化处理（101），其量化间距qn，qn + 1产生帧速率dn，dn + 1，之后该方法包括对于每个当前帧近似（102 ）编码率对数的变化规律为量化间距对数Log（dn）= a-1 / m Log（qn）的线性函数，其中a和m基本上是恒定的测试值。当前帧的量化间距qn适应（103）到下一帧的值qn + 1，其适应系数r，qn + 1 = r.qn，其中r =（dn / dc）用于将下一帧的速率dn + 1连续调整为目标速率dc的值的目标速率。该方法对于编码常规或高清数字电视信号是有用的。

10. 发明申请

WO1995028810A1 DIGITAL SIGNAL DIVIDED INTO SELF-CONTAINED DATA CONTAINERS, IN PARTICULAR FOR DATA TRANSMISSION TO SELECTIVE CALL RECEIVERS 审中-公开
标题翻译：数字信号分为自包含数据容器，特别是数据传输到选择性呼叫接收器
公开(公告)号：WO1995028810A1
公开(公告)日：1995-10-26
申请号：PCT/FR1995000504
申请日：1995-04-18
申请人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE , RAHUEL, Jean-Claude , BACHE, Alain , GUILLOUET, Edouard
发明人： FRANCE TELECOM , TELEDIFFUSION DE FRANCE
IPC分类号： H04Q07/10
CPC分类号： H04H20/28 , H04H20/72 , H04H20/86 , H04H2201/70 , H04W88/187
摘要： A digital signal to be received by a plurality of receivers, particularly restricted-range receivers, and divided into signal frames of which at least some include both a main data channel consisting of sub-channels, and a data transport path including at least one data channel consisting of separate data blocks dedicated to a single service and known as containers. Each container includes a header (41) consisting of a selection sub-header (44) containing, inter alia, data (46) for identifying a group of at least one container destination receiver, and a service sub-header (45) containing, inter alia, dedicated service data; a separately convolutionally coded working data field (42) containing source data for a given service; and an error detection and/or correction data field (43). Said selection sub-headers (44) are disconnected from the respective containers and collected in at least one dedicated service container subjected to simplified channel coding to enable the receivers to detect the presence of a container dedicated thereto by low-cost decoding analysis of said dedicated service container, said selection sub-headers (44) further containing access data (410) for determining the position of the corresponding container in said data path. The above system enables the digital audio broadcasting (DAB) standard to be used for broadcasting paging data.
摘要翻译：要被多个接收机特别是限制范围的接收机接收的数字信号，并被划分为信号帧，其信号帧至少包括由子信道组成的主数据信道和包括至少一个数据的数据传输路径通道由独立的数据块组成，专用于单个服务并称为容器。每个容器包括由包括用于识别至少一个容器目的地接收器的组的数据（46）以及服务子标题（45）的选择子标题（44）组成的报头（41）特别是专用服务数据; 单独卷积编码的工作数据字段（42），其包含给定服务的源数据; 以及错误检测和/或校正数据字段（43）。所述选择子标题（44）与相应的容器断开连接并被收集在经过简化信道编码的至少一个专用服务容器中，以使得接收机能够通过所述专用的低成本解码分析来检测专用于其的容器的存在所述选择子标题（44）还包含用于确定所述数据路径中相应容器的位置的访问数据（410）。上述系统使数字音频广播（DAB）标准可用于广播寻呼数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式