| 摘要 |
<p>PURPOSE:To prevent a signal block from being deleted at the time of generating collision in the signal block by informing a competitive state to all of the input terminals except all the input terminals or one input terminal colliding with each other set to a collision point in the case of generating the collision by a signal from plural input terminals. CONSTITUTION:Assuming that the signal block of a simultaneous routing address '11' is delivered from the input terminals 1 and 4, the collision is generated at a unit switch 15. The control part 30 of the unit switch 15, when detecting the fact, sets the signal path of the signal block on one side at an output terminal 43, and stops the setting of the signal path on the signal block on the other side, and sends a contention detecting signal to the input terminal. Thus, by folding the contention detecting signal at the input terminal, it is possible to make the provision of a buffer for waiting at every unit switch unnecessary.</p> |
