In a device and a method for determining a cardiac condition from a detected cardiac signal, an input signal is formed from the detected cardiac signal and supplied to an analysis unit. The analysis unit forms an analysis signal from the input signal, having a real part substantially corresponding to...http://www.google.de/patents/US7283865?utm_source=gb-gplus-sharePatent US7283865 - Device and method for determining a cardiac condition using a complex signal formed from a detected cardiac signal
