公开(公告)号：US07464323B2

公开(公告)日：2008-12-09

申请号：US10746144

申请日：2003-12-29

申请人： Philippe Piret ,  Frédéric Lehobey ,  Philippe Le Bars ,  Frédérique Ehrmann-Patin

发明人： Philippe Piret ,  Frédéric Lehobey ,  Philippe Le Bars ,  Frédérique Ehrmann-Patin

IPC分类号： H03M13/00

CPC分类号： H03M13/132 ,  H03M13/17

摘要： The present invention concerns channel codes particularly well adapted to transmission in channels in which errors tend to occur in bursts. Moreover, the codes according to one embodiment of the invention using an algebraic geometric curve are easy to decode and have a relatively high minimum distance. The invention also relates to the corresponding encoding and decoding methods, as well as the devices and apparatuses adapted to implement those methods. Application is in particular to mass storage, and to systems of communication by OFDM.

摘要翻译： 本发明涉及特别适用于其中在突发中倾向于发生错误的信道中的传输的信道码。 此外，根据使用代数几何曲线的本发明的一个实施例的代码易于解码并且具有相对较高的最小距离。 本发明还涉及相应的编码和解码方法以及适于实现这些方法的装置和装置。 应用特别是大容量存储，以及通过OFDM的通信系统。

公开(公告)号：US07039120B1

公开(公告)日：2006-05-02

申请号：US09450716

申请日：1999-11-30

申请人： François Thoumy ,  Philippe Le Bars ,  Samuel Rousselin ,  Lionel Le Scolan ,  Frédérique Ehrmann

发明人： François Thoumy ,  Philippe Le Bars ,  Samuel Rousselin ,  Lionel Le Scolan ,  Frédérique Ehrmann

IPC分类号： H04L27/10

CPC分类号： H04L5/0007 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0085 ,  H04L5/0096

摘要： The method of transmitting data in the form of symbols sent over an electromagnetic channel is characterized in that a measurement of significance is attributed to each group of data to be transmitted, in that the transmission reliability of the carriers is estimated dynamically, and in that the most significant data are sent over the most reliable carriers at each instant, the other data being sent over the carriers of decreasing reliability, in decreasing order of significance of the data.

摘要翻译： 以通过电磁信道发送的符号的形式发送数据的方法的特征在于，重要性的测量归因于要发送的每组数据，因为载波的传输可靠性被动态地估计，并且因为 最有意义的数据在每一时刻通过最可靠的载波发送，其他数据按照数据显着性的递减顺序通过可靠性降低的载波发送。

公开(公告)号：US07013023B2

公开(公告)日：2006-03-14

申请号：US10029673

申请日：2001-12-31

申请人： Frédérique Ehrmann Patin ,  Ioana Donescu

发明人： Frédérique Ehrmann Patin ,  Ioana Donescu

IPC分类号： G06K9/00 ,  H04L9/00

CPC分类号： H04N19/467 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0053 ,  G06T2201/0083 ,  G06T2201/0202 ,  H03M13/2975 ,  H04L1/0041 ,  H04L1/0051 ,  H04L1/0066 ,  H04N1/32187 ,  H04N1/32277 ,  H04N1/32614 ,  H04N1/32689 ,  H04N19/60 ,  H04N2201/3233

摘要： In order to decode a received digital signal which has been watermarked with a known watermark, at least part of the digital signal is decoded by using a parametrisable iterative decoder, the watermark is extracted from the decoded signal, the extracted watermark is compared with the known watermark, and at least one parameter of the decoder is modified if necessary, according to the result of the comparison.

公开(公告)号：US07058005B2

公开(公告)日：2006-06-06

申请号：US09969796

申请日：2001-10-04

申请人： Frédérique Ehrmann-Patin ,  François Thoumy

发明人： Frédérique Ehrmann-Patin ,  François Thoumy

IPC分类号： H04J11/00

CPC分类号： H04L27/2604

摘要： In a data transmission method, said data are organized in blocks of K frames, each of said frames being composed of N binary words, each of these binary words being associated with an “elementary symbol”. Each of the M=K·N elementary symbols per block modulates a different sub-carrier amongst a series of sub-carriers forming an OFDM modulation, the allocation of each elementary symbol to a given sub-carrier being effected so that, when the OFDM signal is demodulated after it is received, a chosen subset is extracted from amongst said K frames. Application to the transmission of data representing compressed images in accordance with the JPEG2000 standard.

公开(公告)号：US07027656B2

公开(公告)日：2006-04-11

申请号：US09852660

申请日：2001-05-11

申请人： Félix Henry ,  Frédérique Ehrmann

发明人： Félix Henry ,  Frédérique Ehrmann

IPC分类号： G06K9/36

CPC分类号： G06T9/007

摘要： The invention concerns a method of adjusting at least one parameter for the compression of data representing physical quantities, the compressed data then being coded according to a coding mode in order to protect it from transmission errors. The methods includes, as from a required compressed data size, determining at least one characteristic of the coding mode, determining an effective size of the compressed data according to the required size and the at least one characteristic, and adjusting at least one compression parameter according to the effective size.

摘要翻译： 本发明涉及一种调整用于表示物理量的数据的压缩的至少一个参数的方法，然后根据编码模式对压缩数据进行编码，以保护其免受传输错误。 该方法包括：根据所需的压缩数据大小，确定编码模式的至少一个特性，根据所需尺寸和至少一个特征确定压缩数据的有效大小，并根据所需尺寸和至少一个特征调整至少一个压缩参数 到有效的大小。

公开(公告)号：US06954471B1

公开(公告)日：2005-10-11

申请号：US09597143

申请日：2000-06-20

申请人： Samuel Rousselin ,  Philippe Le Bars ,  Lionel Le Scolan ,  François Thoumy ,  Frédérique Ehrmann ,  Mohamed Braneci ,  Patrice Nezou ,  Pascal Rousseau

发明人： Samuel Rousselin ,  Philippe Le Bars ,  Lionel Le Scolan ,  François Thoumy ,  Frédérique Ehrmann ,  Mohamed Braneci ,  Patrice Nezou ,  Pascal Rousseau

IPC分类号： H04J3/06 ,  H04L7/04 ,  H04L12/40 ,  H04L12/64 ,  H04L27/26 ,  H04J3/16

CPC分类号： H04L12/40091 ,  H04J3/0685 ,  H04L7/04 ,  H04L12/4011 ,  H04L27/2656 ,  H04L27/2662

摘要： The present invention concerns a method and an apparatus of generating a reference event in a receiving node receiving frames of information, when a frame of information is received, the method and the apparatus sample the frame of information in order to form sampled data, process sampled data in order to detect among said sampled data a specific data, monitor the number of processed sampled data until the detection of a specific data and generate a reference event according to the result of processing and monitoring.

摘要翻译： 本发明涉及一种在接收信息帧的接收节点中产生参考事件的方法和装置，当接收到信息帧时，方法和装置对信息帧进行采样，以形成采样数据，处理采样 数据，以便在所述采样数据中检测特定数据，监视经处理的采样数据的数量，直到检测到特定数据，并根据处理和监视的结果生成参考事件。