| 摘要 |
PURPOSE:To attain efficient loop communication, by providing a means which can communicate plural stations each other at an arbitrary time, in a loop communication system. CONSTITUTION:In the communication from a station A to C, the station A uses a loop back connection toward a station F, and returns data from the station F to the station F. The station C stops the relay function of data from the station A and blocks the data transmission to the station D. That is, the data between the stations A and C is relayed at a station B and flows as shown in the arrow 2. Thus, when the station D obtains the right of transmission and makes transmission to the station F, the communication is done as shown in the arrow 2. If the station D transmits to the station B, since loop back is executed at the station A, it is easily known that the other communication is executed on the way to the station B. |
