| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently detect an error in a communication network by detecting the error of inter-node transfer information by means of comparing an updated check code with the updated check code of a self node when the outdated check code is received from a transmission node in a reception node. SOLUTION: The processor modules(PM) 28-1 and 28-2 of a transmission system 27-1 and PM 28-3 of a reception system 27-2 fill the roles of the transmission node and the reception node. The error check codes are provided on a transmission-side and a reception-side in the unit of memory segments. On the transmission-side, the error check code is updated whenever data is written into the memory segment, the memory segment is transferred to the reception- side in the order of writing and the error check code is transferred. On the reception-side, the error check code is updated whenever the memory segment is received and the error check code from the transmission-side is compared with the error check code on the reception-side are finally compared so as to detect the error.</p> |
