| 摘要 |
<p>PURPOSE:To generate framing error on a reception side when incorrect synchronization is caused, to detect the incorrect synchronization and to establish normal synchronization in next frame reception by sending an incorrect synchronization recovery frame for which the entire information bit part is '0' following an information frame to be transmitted in start-stop communication. CONSTITUTION:The incorrect synchronization recovery frame (1b) for which the entire information bit is '0' is transmitted immediately after the information frame (1a). When the optional '0' in a data bit part (1a-2) is erroneously recognized as a start bit in frame reception immediately before, since '0' is surely arranged at the position of the stop bit of the erroneously recognized frame, the framing error is generated. Also, since a rising edge from '1' to '0' is not present in the incorrect synchronization recovery frame, the start bit of the next frame can be accurately grasped and a normal synchronizing status returns.</p> |
