Patent ID: 8165665

Claim:
A chip for sensing a physiological signal comprising: an input unit for receiving a first electrocardiogram (ECG) signal; a filter unit for generating a second ECG signal by filtering the first ECG signal; an amplifying unit for generating a third ECG signal by amplifying the second ECG signal; an analog to digital conversion unit for converting the third ECG signal to a digital signal; an operating unit, comprising: a QRS wave sieving unit for sieving a plurality of consecutive QRS waves from the digital signal; a heart beat measurement unit for generating a heartbeat cycle signal according to the QRS waves; a time-domain analysis unit for generating a time-domain analysis data according to the heartbeat cycle signal; a Fourier analysis unit for generating a Fourier analysis data, according to the heartbeat cycle signal, wherein the Fourier analysis unit carries out the analysis of one of heart rhythm cycle signal for power spectrum density of the total power, extremely low frequency rhythm power spectrum density, low-frequency rhythm power spectrum density, high-frequency heart-power spectrum density, high-frequency low-ratio, low-frequency standard, high-frequency standard to generate the Fourier analysis data; a PQRST wave sieving unit for sieving a plurality of consecutive PQRST waves from the digital signal; and a PQRST wave analysis unit for generating a ECG analysis data according to the PQRST waves; and an output unit for outputting the time-domain analysis data, the Fourier analysis data and the ECG analysis data.