整个系统分为两个模块：检测模块和解码模块。检测模块主要完成从输入串行序列判断出A，B或C信号，并分别输出脉冲标志脉冲串Signal_A，Signal_B和Signal_C；同时，当检测到任一信号时，BIT_EN_temp输出一个高脉冲。解码模块根据检测模块输出的三个标志脉冲进行0/1解码，输出最终的密勒解码数据DOUT；同时，输出DATA_EN和BIT_EN两个标志信号。-The whole system is divided into two modules: detection module and decoding module. Detection module of the completion of the serial sequence determine from the input A, B or C signal and the output pulse signs were pulse train Signal_A, Signal_B and Signal_C　the same time, when the detection of either signal, BIT_EN_temp output a high pulse. Decoding module detection module according to the three flag pulses output 0/1 decoder, the output end of the Miller encoded data DOUT　the same time, the output DATA_EN and BIT_EN two signs and signals.