| 摘要 |
<p>An information transmission system is provided for railway vehicles wherein optical transmission between cars of trains is preformed. A predetermined signal corresponding to information to be sent from a transmitting portion is added in succession to the information. The information is then transmitted and a receiving portion receives the information and the additional signal. The receiving portion compares the information and the additional signal to detect a transmission error. When an error rate has exceeded a predetermined value, a predetermined display signal is provided. Also, the transmitting and receiving portions are coupled to an alternative data transmission path.</p> |
