Patent ID: 6678858
Filing Date: 2004-01-13
Classification: H03M,H04L

Abstract:
A code error monitor apparatus comprising:a first A-system code error detecting unit detecting a code error of data on a data transmission line according to a system A; a B-system code error detecting unit provided on a downstream side of said A-system code error detecting unit and detecting a code error of the data based on a B-system error correcting code according to a system B which is different from the system A; a B-system error correcting code generating unit provided on downstream side of said first A-system code error detecting unit and on an upstream side of the B-system code error detecting unit, and generating the B-system error correcting code based on the data supplied to said A-system code error detecting unit; and a second A-system code error detecting unit provided on the downstream side of said B-system error correcting code generating unit and on the upstream side of the B-system code error detecting unit, and detecting a code error of the data to be used for generating the B-system error correcting code according to the system A.