Patent ID: 8753285

Claim:
An ElectroCardioGram (ECG) sensing apparatus comprising: an ECG sensor configured to measure ECG by using an electrode adapted to be located on a human body, and generate an ECG signal based on the measured ECG; a pre-processor configured to perform filtering and amplification with respect to the ECG signal which is generated by the ECG sensor; an analog-digital converter (ADC) configured to convert the ECG signal which is output from the pre-processor, from an analogue format into a digital format; a filter configured to filter the ECG signal converted by the ADC, and filter a baseline drift noise which is caused by motion and breathing of the human body; and a communication module configured to wirelessly transmit the ECG signal which is filtered by the filter, wherein the filter comprises: an inputter configured to receive the ECG signal which is converted into the digital signal by the ADC; an adaptive linear prediction filter configured to remove the baseline drift noise which exists in the ECG signal input to the inputter; a buffer configured to temporarily store the filtered ECG signal which is output from the adaptive linear prediction filter; and an outputter configured to transmit the ECG signal temporarily stored in the buffer to the communication module, and wherein the adaptive linear prediction filter comprises: a sub delayer which comprises a plurality of delayers configured to shift the ECG signal input to the inputter in sequence; a main delayer which comprises a plurality of delayers configured to shift the shifted ECG signals output from the sub delayers in sequence; a gain unit configured to multiply the ECG signals temporarily stored in the delayers of the main delayer by corresponding coefficients, and output the multiplied ECG signals; and an adder configured to add up all of the outputs of the gain unit and generate the filtered ECG signal.