| 摘要 |
PURPOSE:To avoid occurrence of the error accumulation by providing both the encoder and the decoder for the error code between the inside of the loop transmission line and plural units of the communication equipment and then correcting the error caused by the external noise with every circulation. CONSTITUTION:A closed loop is formed by connecting plural units of communication equipment 3-5 via transmission line 1, and then the information added with the name of the remote communication equipment is put on line 1 to perform transfer. In this case, both encorder 15 and decoder 16 are provided for the error code between line 1 and equipment 3-5, and the error caused by the external noise is corrected with every circulation for the information which is transmitted on line 1. Thus, the error accumulation can be avoided. |
