公开(公告)号：US4216543A

公开(公告)日：1980-08-05

申请号：US15014

申请日：1979-02-26

申请人： George C. Cagle ,  Roger A. Bloom

发明人： George C. Cagle ,  Roger A. Bloom

IPC分类号： H04L7/033 ,  H04L27/18 ,  H04L27/233 ,  H03D3/22

CPC分类号： H04L7/033 ,  H04L27/2335

摘要： Baud timing is derived from an AC signal having n half-cycles during each baud period, for use in demodulating a carrier signal bearing digital information via some predetermined variation in a characteristic of the carrier signal during each baud period, by converting the carrier signal characteristic variation to a DC signal, sampling the DC signal at the same point during each half-cycle of the AC signal, summing the samples corresponding to the same half-cycle of the AC signal within each sequence of AC signal half-cycles occurring over successive baud periods, there being n such sample totals, identifying the largest one of the n totals and sychronizing the baud timing signal to the AC half-cycle corresponding thereto.

摘要翻译： 在每个波特周期期间，从具有n个半周期的AC信号导出波形定时，用于通过在每个波特周期期间通过载波信号的特性经过一些预定变化来解调承载数字信息的载波信号，通过转换载波信号特性 对DC信号的变化，在AC信号的每个半周期期间在同一点对DC信号进行采样，将对应于相继的AC信号的相同半周期的采样相加，在连续发生的AC信号半周期的每个序列内 波特率周期，存在n个这样的样本总数，识别n个总计中的最大的一个，并将波特定时信号同步到与之对应的AC半周期。

公开(公告)号：US4648088A

公开(公告)日：1987-03-03

申请号：US766471

申请日：1985-08-19

申请人： George C. Cagle ,  Steven J. Clendening

发明人： George C. Cagle ,  Steven J. Clendening

IPC分类号： H04J3/08 ,  H04L12/437

CPC分类号： H04L12/437 ,  H04J3/085

摘要： A time division multiplex ring comprising a plurality of nodes connected together by interchanged trunks (main and standby paths) in a ring type or closed loop configuration. Each node in the system includes transmitters and receivers on the main and standby paths along with bridging and switching circuits connected to data failure and other failure detection circuits for operating same arranged such that data and alarm signals are transmitted in the first direction on the main path around the closed loop and in an opposite direction on the standby path. The system is arranged such that if a failure occurs only on the main path and the standby path is unaffected, all communications are switched to the standby path. On the other hand, if the failure affects both the standby and main paths, the circuitry is switched to a configuration where the closed loop comprises portions of the standby and main path and the nodes that are adjacent the failure are connected such that the standby path bypasses those nodes whereby there is direct communication between the two nodes adjacent the failure.

摘要翻译： 一种时分复用环，包括通过交换的中继线（主和备用路径）以环形或闭环配置连接在一起的多个节点。 系统中的每个节点包括主和备用路径上的发射机和接收机以及连接到数据故障的桥接和切换电路以及用于操作相同的其他故障检测电路，以使数据和警报信号在主路径上沿第一方向传输 围绕闭环并且在备用路径上相反的方向。 该系统被布置成使得如果仅在主路径上发生故障并且备用路径不受影响，则所有通信都切换到备用路径。 另一方面，如果故障影响备用路径和主路径，则将电路切换到闭环包括备用主路径和主路径的部分以及与故障相邻的节点连接的配置，使得备用路径 绕过这些节点，从而在与故障相邻的两个节点之间存在直接通信。

公开(公告)号：US4225964A

公开(公告)日：1980-09-30

申请号：US15672

申请日：1979-02-26

申请人： George C. Cagle ,  Eric K. Weeren

发明人： George C. Cagle ,  Eric K. Weeren

IPC分类号： H04B3/54 ,  H04L27/18 ,  H04L27/233 ,  H03D3/22

CPC分类号： H04B3/542 ,  H04L27/2335 ,  H04B2203/5416 ,  H04B2203/542 ,  H04B2203/5495

摘要： Digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of a reference signal is detected by subdividing each baud period into n intervals, converting the carrier signal characteristic variation to a DC signal which is integrated over a baud period beginning with the inception of each of the intervals and converting to and storing the equivalent data baud value of each integrated DC signal, thus providing multiple messages from which to select a valid message.

摘要翻译： 通过将每个波特周期细分为n个间隔来检测通过相对于参考信号的相同特性在每个波特周期期间通过其某些特性的预定变化由载波信号承载的数字数据，将载波信号特性变化转换为DC信号 其在从每个间隔开始的波特率周期内被集成，并且转换并存储每个集成DC信号的等效数据波特率，从而提供多个消息来从中选择有效消息。

公开(公告)号：US4218769A

公开(公告)日：1980-08-19

申请号：US15276

申请日：1979-02-26

申请人： George C. Cagle

发明人： George C. Cagle

IPC分类号： H04L7/033 ,  H04L27/18 ,  H04L27/233 ,  H03D3/22

CPC分类号： H04L7/033 ,  H04L27/2335

摘要： A carrier signal bearing digital data which varies a characteristic of the carrier signal during each baud period in a predetermined manner to identify the baud value during the period is demodulated by subdividing each baud period into n intervals, converting the carrier signal characteristic to a DC signal which is integrated over each of the intervals and summing the integrated DC signal attained at the end of each interval with the integrated DC signals attained at the end of the previous n-1 intervals.

摘要翻译： 在每个波特周期期间以预定方式改变载波信号的特性以识别该周期内的波特率的承载数字数据的载波信号通过将每个波特周期细分为n个间隔来解调，将载波信号特性转换成DC信号 其在每个间隔中积分，并且将在每个间隔结束时获得的积分直流信号与在先前n-1个间隔结束时获得的积分直流信号相加。