Electrocardiogram signal processing

Patent Granted [PROBLEMS] An electrocardiogram signal processing method for extracting a fetus electrocardiogram signal included in a biopotential signal detected from an electrode attached to a mother's body. [MEANS FOR SOLVING PROBLEMS] An electrocardiogram signal processing method for extracting an electrocardiogram signal of a fetus ( 1 b) from a biopotential signal containing electrocardiogram signals of the mother's body ( 1 ) and a fetus ( 1 b) inputted through an electrode (E) attached to the mother's body ( 1 ) during pregnancy, characterized by comprising reference signal generating step 4 of generating a reference signal for separating/extracting a fetus electrocardiogram signal of a specified induction type according to a beat rate signal inputted from a sensor (S) for detecting the beat rate of the fetus ( 1 b).