公开(公告)号：US4517644A

公开(公告)日：1985-05-14

申请号：US295547

申请日：1981-08-24

申请人： Nobuhiro Hamada ,  Norihiko Sugimoto ,  Masumi Nawa

发明人： Nobuhiro Hamada ,  Norihiko Sugimoto ,  Masumi Nawa

IPC分类号： H04Q9/00 ,  G06F13/372 ,  H04L12/42 ,  H04L12/433 ,  G06F15/16 ,  H04J3/08

CPC分类号： H04L12/42 ,  G06F13/372 ,  H04L12/433

摘要： A symmetric type loop communication system having no master station, in which a plurality of control stations connected to a loop communication path each have a timer with its set time different from each other control station. The timer of a station is reset when a transmission right signal (GA signal) from another control station is received. On the other hand, a GA signal is sent out to another control station together with a message frame when the timer thereof has counted to a predetermined state.

摘要翻译： 一种没有主站的对称型环路通信系统，其中连接到环路通信路径的多个控制站各自具有其设定时间彼此不同的定时器。 当接收到来自另一控制站的发送权信号（GA信号）时，站的定时器被复位。 另一方面，当其定时器计数到预定状态时，GA信号与消息帧一起发送到另一个控制站。