公开(公告)号：EP0737386A1

公开(公告)日：1996-10-16

申请号：EP95932890.0

申请日：1995-10-17

申请人： PHILIPS ELECTRONICS N.V.

发明人： MALONEY, Brian, Gavin ,  MARSTON, Paul, Stewart

IPC分类号： H04L27 ,  H03M13 ,  H04L1

CPC分类号： H04L1/0057 ,  H03M13/27 ,  H04L1/0071 ,  H04L27/00 ,  H04L27/12

摘要： A method of, and system for, communicating s-bit symbols using an M-ary modulation scheme in which a plurality of code words are arranged as rows of a block which is read-out orthogonally to the rows. In order to increase the dependability of the recovered code words, when the code words are stored or read-out the order of the bits forming some of the s-bit symbols is transformed so that those which would have been least significant bits (LSBs) are most significant bits (MSBs) and vice versa, the MSBs being affected less by noise than the LSBs when transmitted. At the receiver those s-bit symbols which have been transformed are restored to their original order.

公开(公告)号：EP0742988A1

公开(公告)日：1996-11-20

申请号：EP95935545.0

申请日：1995-11-13

申请人： PHILIPS ELECTRONICS N.V.

发明人： MARSTON, Paul, Stewart ,  MALONEY, Brian, Gavin

IPC分类号： H04J3 ,  H04B7 ,  H04L7 ,  H04W88

CPC分类号： H04W88/026 ,  Y02D70/00

摘要： A method of fade recovery in a digital message transmission system in which data is encoded into code words, formatted into frames of a batch and transmitted in accordance with one or more transmission formats, and a synchronization code word, indicative of the transmission format, is inserted at the beginning of each batch, the method of fade recovery including energizing a receiver for a first predetermined time period and storing any signals received during the first predetermined time period, analyzing the stored signals to determine if the stored signals being transmitted is in one of the transmission formats, and if so, maintaining energization of the receiver in predetermined time increments for up to a maximum of a second predetermined time period and checking if any of the stored signals associated with each such time increment conform to at least one of the transmission formats.

摘要翻译： 数字消息传输系统中的数据消息传输系统中的一种淡化恢复方法，其中数据被编码成码字，被格式化成批的帧并根据一种或多种传输格式传输，并且指示传输格式的同步码字是 插入每个批次的开始处，包括衰减恢复的方法，包括给第一预定时间段的接收器通电并且存储在第一预定时间段期间接收到的任何信号，分析所存储的信号，以确定被发送的存储的信号是否在一个 的传输格式，并且如果是，则以预定时间增量维持接收机的通电达多达第二预定时间段的最大值，并且检查与每个这样的时间增量相关联的所存储的信号中的任何一个是否符合 传输格式。