Patent 7680523 was granted and assigned to Polar Electro on March, 2010 by the United States Patent and Trademark Office.
The invention relates to a sensor system, a garment and a heart rate monitor. The sensor system comprises at least one flexible film structure comprising: a first insulation layer and at least one electric conductor layer formed on top of the first insulation layer and comprising an electrode area, which is configured to establish an electric contact with the surface of the user's skin and to generate as output an electric signal proportional to a momentary value of the electrocardiogram.