In one exemplary embodiment, the invention evaluates cardiac events (e.g., beats) present within an ECG waveform to...http://www.google.co.uk/patents/US7570989?utm_source=gb-gplus-sharePatent US7570989 - Method and apparatus for signal assessment including event rejectionAdvanced Patent SearchPublication numberUS7570989 B2Publication typeGrantApplication numberUS 10/995,920Publication date4 Aug 20