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    • 3. 发明授权
    • Error correction apparatus and method
    • 纠错装置及方法
    • US5898708A
    • 1999-04-27
    • US491257
    • 1995-06-16
    • Toru TateishiKatsumi MuranoTakayasu AokiHiroaki Sato
    • Toru TateishiKatsumi MuranoTakayasu AokiHiroaki Sato
    • G06F11/10H03M13/00H03M13/15H03M13/47H04L1/00
    • H03M13/151H03M13/47
    • When a receiver unit receives second data composed of check bits and first data obtained by encoding information bits indicating the communication contents by way of a first generator matrix based on a first generating polynomial, and then further encoding the first data by way of a second generator matrix of an irreducible standard form based on a second generating polynomial, an error location detector decodes the second data received by way of a second check matrix that is orthogonal to the second generator matrix so as to detect errors produced in the first data. A dummy syndrome generator generates a dummy syndrome of the error produced in the information bits based on the detected error location and on the first generating polynomial. A syndrome generator takes the product of the data obtained by excluding the check bits from the second data received by the receiver unit and the first check matrix that is orthogonal to the first generator matrix so as to generate a syndrome that indicates the error syndrome produced in the information bits. Finally, an error corrector corrects errors produced in the information bits if the dummy syndrome generated by the dummy syndrome generator is the same as the syndrome generated by the syndrome generator.
    • 当接收机单元接收由校验位组成的第二数据和通过基于第一生成多项式通过第一生成矩阵编码指示通信内容的信息比特而获得的第一数据,然后通过第二生成器对第一数据进行编码 基于第二生成多项式的不可约标准形式的矩阵,误差位置检测器通过与第二生成矩阵正交的第二校验矩阵来接收的第二数据进行解码,以便检测在第一数据中产生的错误。 虚拟综合征发生器基于检测到的误差位置和第一生成多项式产生在信息比特中产生的误差的虚拟综合征。 校正子发生器通过从由接收器单元接收的第二数据和与第一生成器矩阵正交的第一校验矩阵排除校验位而获得的数据的乘积,以产生指示在 信息位。 最后,如果由虚拟综合征发生器产生的虚拟综合征与综合征发生器产生的综合征相同,则误差校正器校正信息位中产生的误差。
    • 4. 发明授权
    • Data communication method and system
    • 数据通信方式和系统
    • US6163873A
    • 2000-12-19
    • US125821
    • 1998-08-26
    • Katsumi Murano
    • Katsumi Murano
    • H03M13/00H03M13/09H04L1/00H04L1/16H04L29/08H03M13/03
    • H03M13/09
    • A data communication method and system that, when performing real-time type data communication using the same code configuration as for storage type communication wherein error correction is done by retransmission, improve the performance of error correction by using error detection codes effectively, avoiding inefficient-use of the error detection codes, and enhance the quality of the data transmitted. In a detection/correction selector unit (27), a reply frame production unit (31) is directed to request retransmission of error frames discarded by an error detector unit (29) when conducting storage type data communication, while data are twice error-corrected by a second error correction unit (24) and a first error correction unit (28), and are output to a data output unit (30) when conducting real-time type data communication.
    • PCT No.PCT / JP97 / 04886 Sec。 371日期:1998年8月26日 102(e)日期1998年8月26日PCT 1997年12月26日提交的数据通信方法和系统,当使用与用于通过重传进行纠错的存储类型通信相同的代码配置执行实时类型数据通信时, 通过有效地使用错误检测码来提高纠错性能,避免错误检测码的低效使用,提高传输数据的质量。 在检测/校正选择器单元(27)中,响应帧产生单元(31)被指示在进行存储型数据通信时要求由错误检测器单元(29)丢弃的错误帧的重传,而数据被纠错两次 通过第二纠错单元(24)和第一误差校正单元(28),并且在进行实时型数据通信时被输出到数据输出单元(30)。