There is described a device and a method for detecting the pulse rate. The measuring principle consists of emitting radiant energy at the surface of or through human body tissue (5) by means of a light-emitting source (10), measuring the intensity of the radiant energy after propagation through the human...http://www.google.com.au/patents/US20030065269?utm_source=gb-gplus-sharePatent US20030065269 - Method and device for pulse rate detection
