| 摘要 |
<p>PURPOSE:To prevent a data representing an errorneous state from being sent by inserting an interval signal being an interval or over between data in switching a route and shortening a length of the data of the route before and after switching than the normal data length. CONSTITUTION:When a route switching section 1-1 changes over a route, an interval generating section 3 sends a 0 level signal with a prescribed interval T and a data shorter than the data length of the normal data is sent to a reception data processing section 2 via an AND circuit 4. When the route is switched from A to B at a point P in figure (A) for example, the data of 1A of the route A is sent as it is to the section 2, a data at 2A of the route A is segmented by a switch point and then the data of remaining 2B of the route B after a prescribed interval T is sent to the section 2, the data of 3B, 4B of the succeeding route B is sent as it is to the section 2 to check a code error and data length.</p> |
