Circuit apparatus built in a computer peripheral device for detecting physiological signal

摘要

A circuit apparatus built in a computer peripheral device for detecting physiological signal is disclosed, which has a signal detecting circuit to detect an optical signal from the environmental light source and sends the detected optical signal to a physiological signal processing circuit for performing digital process to obtain a physiological signal. Then, the physiological signal is sent to a computer via an input/output microprocessor circuit for showing the user's physiological state.