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    • 55. 发明公开
    • ERROR CORRECTING METHOD AND APPARATUS
    • FEHLERKORREKTURVERFAHREN UNDGERÄT
    • EP1921754A1
    • 2008-05-14
    • EP06782093.6
    • 2006-08-01
    • NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    • SAITO, KoichiFUKADA, YouichiMAEDA, YoichiKUMOZAKI, Kiyomi
    • H03M13/29G06F11/10H04L1/00
    • H04L1/0083H03M13/098H03M13/15H03M13/1515H03M13/2915H03M13/293H03M13/6356H04L1/0041H04L1/0045H04L1/0057H04L1/0061H04L1/0066H04L1/0071H04L1/0072
    • In the invention, a transmitting apparatus arranges data in matrix, calculates error correction codes in column direction of the data, arranges the calculated error correction codes in matrix having the same number of columns as the matrix of the data, attaches number information corresponding to a row number to each row having data or an error correction code, encapsulates, into each packet, each row having number information and data or an error correction code, as well as an error detection code for detection of one or more bit errors at least in the number information and the data or error correction code contained in the packet, and transmits the packet. A receiving apparatus discards received packets from which errors are detected by using the error detection code contained in each packet, checks packet losses according to number information, and restores lost data using the error correction codes. The invention can provide an error correction method compensating for packet losses and bit errors in a packet and realizes efficient transmission with less delay by a simple circuit.
    • 在本发明中,发送装置将数据排列成矩阵,计算数据的列方向的纠错码,将计算出的纠错码排列成与数据矩阵相同数量的列的矩阵,附加与数据对应的号码信息 具有数据或纠错码的每行的行号封装到每个分组中,每行具有数字信息和数据或纠错码,以及用于检测至少一个或多个比特错误的错误检测码 包含在数据包中的号码信息和数据或纠错码,并发送该包。 接收设备通过使用包含在每个分组中的错误检测码来丢弃检测到错误的接收分组,根据号码信息检查分组丢失,并使用纠错码恢复丢失的数据。 本发明可以提供补偿分组中的分组丢失和比特错误的纠错方法,并且通过简单的电路实现具有更少延迟的有效传输。