| 摘要 |
PURPOSE:To detect a complicated transmission code error and distinguish frame section generating the error by comparing a decoding signal which is outputted from forecasting decoding, with a local decoding signal to detect the code error in a code error detection system. CONSTITUTION:A signal, which is entered from an input terminal 1, is digitized by an A/D conversion circuit 2, supplied to a forecasting code circuit 3, multiplexed by a multiplex circuit 4 to obtain a local decoding signal, and sent to a transmission line through a buffer memory 5. A forecasting code signal and the local decoding signal are divided by a separation circuit 10 at the receiving side, and the former is decoded by the forecasting decoding circuit 12. The latter is inputted to a register 11. Both signals are inputted to the comparator 15 with the same phase, and when both signals do not coincide, it is considered that the transmission code error occurs. |
