A multi-speed ECG magnetic tape scanning device for processing and observing in a relatively short interval of time large quantities of ECG signals from two pairs of ECG leads. The ECG information is recorded on a miniature recorder which the patient carries to record the information for a long period...http://www.google.fr/patents/USRE29921?utm_source=gb-gplus-shareBrevet USRE29921 - Electrocardiographic computer
