| 摘要 |
PURPOSE:To increase the reliability of signal transmission, by dividing equally a mark signal with a prescribed length to n sections, recognizing the mark signal, a space signal or a pattern with a detection signal, and checking the signals. CONSTITUTION:A mark signal 31 is a signal having a definite length, which is determined at respective communication systems. In a distributing line carrier signal transmission system, the transmission speed is a speed as low as <=100Baud, and the length of the determined mark signal 31 is equally divided into n sections. A check signal 32 makes n times of checkings for the mark signal 31. As the result of the check signal, discrimination is performed as to whether the section is the mark signal or a sapce signal by all the check correspondence system or the decision by a majority system. |
