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1. 发明公开

EP0049607A2 Communication channel 有权
标题翻译： Übertragungskanal。
公开(公告)号：EP0049607A2
公开(公告)日：1982-04-14
申请号：EP81304547.3
申请日：1981-10-01
申请人： WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED
发明人： Corrie, John Douglas , Tooley, Mark Arthur
IPC分类号： H04L1/08 , G08B29/00
CPC分类号： H04L1/08 , B61L1/188
摘要： A communication channel for conveying quasi-static signals representing several alternative states one of which is potentially unsafe, e.g. the control signal for a signal lamp in a railway control system. Each channel has a signature code (Figs. 1 and 2) which is continuously repeated in different forms, e.g. non-inverted (Fig. 2(a)), inverted, or alternately inverted and non-inverted (Fig. 2(b)), to represent different states. When a potentially unsafe state is indicated, the repeated signature is periodically corrupted according to a predetermined error pattern. The channel receiver (Fig. 4) is arranged such that its output (32,34) can only be held in the unsafe state providing both the signature and the error pattern in the received signal are correct.
摘要翻译：用于传送表示几种替代状态的准静态信号的通信信道，其中一种状态潜在地不安全，例如，用于铁路控制系统中信号灯的控制信号。每个信道具有以不同形式连续重复的签名码，例如非反相，反相或交替反相和非反相，以表示不同的状态。当指示潜在不安全状态时，根据预定的错误模式周期性地破坏重复签名。通道接收器被布置成使得其输出（32,34）只能保持在不安全状态，同时提供接收信号中的签名和错误模式都是正确的。

2. 发明授权

EP0049607B1 Communication channel 有权
标题翻译：通信频道
公开(公告)号：EP0049607B1
公开(公告)日：1985-07-17
申请号：EP81304547.3
申请日：1981-10-01
申请人： WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED
发明人： Corrie, John Douglas , Tooley, Mark Arthur
IPC分类号： H04L1/08 , G08B29/00
CPC分类号： H04L1/08 , B61L1/188

3. 发明公开

EP0049607A3 Communication channel 有权
标题翻译：通信频道
公开(公告)号：EP0049607A3
公开(公告)日：1983-05-11
申请号：EP81304547
申请日：1981-10-01
申请人： WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED
发明人： Corrie, John Douglas , Tooley, Mark Arthur
IPC分类号： H04L01/08 , G08B29/00
CPC分类号： H04L1/08 , B61L1/188
摘要： A communication channel for conveying quasi-static signals representing several alternative states one of which is potentially unsafe, e.g. the control signal for a signal lamp in a railway control system. Each channel has a signature code (Figs. 1 and 2) which is continuously repeated in different forms, e.g. non-inverted (Fig. 2(a)), inverted, or alternately inverted and non-inverted (Fig. 2(b)), to represent different states. When a potentially unsafe state is indicated, the repeated signature is periodically corrupted according to a predetermined error pattern. The channel receiver (Fig. 4) is arranged such that its output (32,34) can only be held in the unsafe state providing both the signature and the error pattern in the received signal are correct.

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