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    • 1. 发明授权
    • Method, device and software application for transmitting data packets in a communication system
    • 用于在通信系统中传输数据分组的方法,设备和软件应用
    • US08386901B2
    • 2013-02-26
    • US12441101
    • 2007-09-26
    • Philippe PiretPhilippe Le BarsJulien Sevin-Renault
    • Philippe PiretPhilippe Le BarsJulien Sevin-Renault
    • G06F11/00
    • H04L1/1819H04L69/16H04L69/163
    • A transmitting apparatus transmits a plurality of data packets to a receiver in a communication system, by transmitting one or more data packets from a list of data packets to be transmitted, and determining whether an acknowledgment is received for each transmitted data packet. When it is determined that an acknowledgement has not been received for at least one data packet, referred to as an unacknowledged data packet, the apparatus selects one or more additional data packets from the list of data packets to be transmitted, generates one or more parity packets by encoding a block of data containing a combination of the selected one or more additional data packets and at least one unacknowledged data packet using a forward error correction scheme, and transmits at least one of the generated parity packets.
    • 发送装置通过从要发送的数据分组的列表发送一个或多个数据分组,并且确定是否为每个发送的数据分组接收到确认,在通信系统中向接收机发送多个数据分组。 当确定至少一个称为未确认数据分组的数据分组的确认尚未被接收时,该装置从要发送的数据分组列表中选择一个或多个附加数据分组,产生一个或多个奇偶校验 通过使用前向纠错方案对包含所选择的一个或多个附加数据分组的组合的数据块和至少一个未确认的数据分组进行编码来发送分组,并且发送所生成的奇偶分组中的至少一个。
    • 3. 发明授权
    • Low-cost methods and devices for the decoding of product cases
    • 用于解码产品案例的低成本方法和设备
    • US07120850B2
    • 2006-10-10
    • US10408458
    • 2003-04-08
    • Frédéric LehobeyPhilippe Piret
    • Frédéric LehobeyPhilippe Piret
    • H03M13/00
    • H03M13/132G11B20/1813H03M13/1515H03M13/29H03M13/2909H03M13/293
    • A method of decoding product codes is disclosed, in which the symbols of each codeword may be placed in a table comprising n2 rows and n1 columns, such that the symbols constituting each row form a permitted word of length n1 according to a first component code able to be decoded by means of an algorithm A1 for correction with erasures, and the symbols constituting each column form a permitted word of length n2 according to a second component code able to be decoded by means of an algorithm A2 for correction with erasures. According to the method, a correction of a row or column is only accepted when the result of the correction is deemed reliable, otherwise all the symbols of that row or column are erased. Devices and apparatus adapted to implement this method are also disclosed. The method is preferably applied to algebraic geometric codes.
    • 公开了一种解码产品代码的方法,其中每个码字的符号可以被放置在包括n 2行和n 1列的表中,使得构成 每行根据能够通过用于用擦除校正的算法A 1 1进行解码的第一分量代码形成长度为n <1的允许字,并且构成 每个列根据能够通过用于用擦除校正的算法A 2被解码的第二分量代码形成长度为n 2的允许字。 根据该方法,仅当校正结果被认为是可靠的时才接受行或列的校正,否则该行或列的所有符号被擦除。 还公开了适用于实现该方法的装置和装置。 该方法优选地应用于代数几何代码。
    • 4. 发明申请
    • Information coding by algebraic geometric code offering two decoding options
    • 通过代数几何代码提供信息编码,提供两种解码选项
    • US20050015704A1
    • 2005-01-20
    • US10825283
    • 2004-04-16
    • Philippe PiretFrederic Lehobey
    • Philippe PiretFrederic Lehobey
    • H03M13/15H03M13/27H03M13/35H04L1/00H03M13/00
    • H04L1/0041H03M13/132H03M13/15H03M13/151H03M13/27H03M13/353H03M13/356H03M13/6312H04L1/0045H04L1/0057H04L1/0071
    • The present invention concerns a method of coding information symbols according to a code defined on a Galois field Fq, where q is an integer greater than 2 and equal to a power of a prime number, and of length n=p(q−1), where p>1. This coding is designed so that there exists a corresponding decoding method, also disclosed by the invention, in which the correction of transmission errors essentially comes down to the correction of errors in p words of length (q−1) coded according to Reed-Solomon. The invention is particularly advantageous when, through a suitable choice of parameters, the code according to the invention is an algebraic geometric code: in this case, it is possible to correct the transmission errors by the method already mentioned and/or by a conventional method which is less economical but has a higher performance. The invention also concerns devices and apparatus intended to implement these coding and decoding methods. Application in particular to mass storage, and to the transmission of images coded at source.
    • 本发明涉及一种根据在伽罗瓦域Fq上定义的代码对信息符号进行编码的方法,其中q是大于2且等于质数的幂的整数,并且长度为n = p(q-1) ,其中p> 1。 该编码被设计成使得存在本发明也公开的对应的解码方法,其中传输错误的校正基本上归结于根据Reed-Solomon编码的长度(q-1)的p个字的错误的校正 。 当通过合适的参数选择,根据本发明的代码是代数几何代码时,本发明是特别有利的:在这种情况下,可以通过已经提及的方法和/或通过常规方法来校正传输错误 这是较不经济但具有较高的性能。 本发明还涉及旨在实现这些编码和解码方法的设备和装置。 特别适用于大容量存储,以及传输以源编码的图像。
    • 6. 发明授权
    • Method and device for detecting the presence of a periodic signal of
known period
    • 用于检测已知周期的周期信号的存在的方法和装置
    • US6028927A
    • 2000-02-22
    • US773135
    • 1996-12-26
    • Fran.cedilla.ois DelumeauPhilippe Piret
    • Fran.cedilla.ois DelumeauPhilippe Piret
    • H04N1/327H04Q1/44H04Q1/46H04M9/08
    • H04Q1/46H04N1/327H04Q1/44
    • The present invention proposes a method and a device for detecting, amongst a set of signals, the presence of a periodic signal of period of occurrence T, in which a signal discriminating the said signal in the said set of signals is delivered. According to the invention, the discrimination signal is sampled in ln samples over more than one period T, a state value B(i) representing its level, and a true correlation value SR is calculated, by cumulating, for pairs of samples i and i+Z, the instantaneous value of correlation between the state value B(i) and the state value B(i+Z), the samples i and i+Z being located at instants shifted by a period T. Then, for said pairs od samples, the rate r of samples having the said signal over the total number of samples is measured, at least one so-called "theoretical correlation average" value is determined, and the true correlation value SR is compared with each theoretical correlation average value and from this the presence or absence of the signal to be detected is deduced.
    • 本发明提出了一种方法和装置,用于在一组信号中检测出现周期信号的发生周期T,其中鉴别所述信号组中的所述信号的信号被传送。 根据本发明,在多于一个周期T的ln个采样中对鉴别信号进行采样,通过对于样本i和i的对,通过累加来计算真实相关值SR(i) + Z是状态值B(i)和状态值B(i + Z)之间的相关的瞬时值,样本i和i + Z位于时段T的时刻。然后,对于所述对od 测量具有所述信号的采样总数的样本的比率r,确定至少一个所谓的“理论相关平均”值,并将真实相关值SR与每个理论相关平均值进行比较,并且 从此推断出要被检测的信号的存在或不存在。