Patent ID: 8790220

Claim:
A gym apparatus comprising: an interface circuitry realized on a single circuit board, the interface circuitry comprising: a processing system; a power transmission system interface for a power transmission system of said gym apparatus; a sensor interface for one or more sensors comprised in said gym apparatus, the sensor interface comprising: a measurement circuitry comprising hand measurement electronics including a differential amplifier, a signal path to the processing system of the interface circuitry, and filtering; and a radio frequency module arranged to establish a radio connection with a heart rate sensor external to a said gym apparatus and attachable to a user's body; and a standardized user interface connector for connecting the interface circuitry to a casing of a portable electronic device serving as a user interface of said gym apparatus during a physical exercise performed with said gym apparatus, wherein said processing system is constructed and arranged to cause the interface circuitry to process and provide connections between the power transmission system interface, the sensor interface, and the user interface connector, and wherein said portable electronic device is integrated into the gym apparatus and comprises: a communication interface arranged to connect to the standardized user interface connector, a user interface comprising a touch-sensitive display, and an internet browser supporting web applications.