System for detecting QRS complexes in an electrocardiogramy (ECG) signal

A computer-implemented method comprising:

• receiving an electrocardiogramal corresponding to electrical activity of a patient's heart;
• separating the electrocardiogramaignal into component signals, wherein each of the component signals represents a frequency-limited band;
• detecting fractional phase transitions for each of the component signals;
• generating, at each of the detected fractional phase transitions for each of the component signals, a data object containing a time value and an amplitude value;
• for a set of consecutive data objects associated with a first component signal of the component signals, detecting a peak amplitude based on the amplitude value of each data object of the set of consecutive data objects in real time;
• for a set of consecutive data objects associated with a second component signal of the component signals, detecting a peak amplitude based on the amplitude value of each data object of the set of consecutive data objects in real time;
• determining that the peak amplitudes satisfy a first time criterion based on the time values of the data objects corresponding to the peak amplitudes in real time;
• calculating a consolidated peak amplitude and a consolidated peak time based on the peak amplitudes and the time values of the data objects corresponding to the peak amplitudes in real time;
• determining that the consolidated peak amplitude satisfies both an amplitude criterion and a second time criterion in real time;
• and
• in response to determining that the consolidated peak amplitude satisfies both the amplitude criterion and the second time criterion, continuously providing an indication of a detected heartbeat in real time.

A system comprising:

• a sensor configured to detect electrical activity of a patient's heart;
• a display apparatus;
• one or more data processing apparatus coupled with the sensor and the display apparatus;
• and
• a non-transitory computer readable storage medium encoded with a computer program, the program comprising instructions that when executed by the one or more data processing apparatus cause the one or more data processing apparatus to perform operations comprising:
• receiving an electrocardiogramal corresponding to electrical activity of a patient's heart;
• separating the electrocardiogramaignal into component signals, wherein each of the component signals represents a frequency-limited band;
• detecting fractional phase transitions for each of the component signals;
• generating, at each of the detected fractional phase transitions for each of the component signals, a data object containing a time value and an amplitude value;
• for a set of consecutive data objects associated with a first component signal of the component signals, detecting a peak amplitude based on the amplitude value of each data object of the set of consecutive data objects in real time;
• for a set of consecutive data objects associated with a second component signal of the component signals, detecting a peak amplitude based on the amplitude value of each data object of the set of consecutive data objects in real time;
• determining that the peak amplitudes satisfy a first time criterion based on the time values of the data objects corresponding to the peak amplitudes in real time;
• calculating a consolidated peak amplitude and a consolidated peak time based on the peak amplitudes and the time values of the data objects corresponding to the peak amplitudes in real time;
• determining that the consolidated peak amplitude satisfies both an amplitude criterion and a second time criterion in real time;
• and
• in response to determining that the consolidated peak amplitude satisfies both the amplitude criterion and the second time criterion, continuously providing an indication of a detected heartbeat in real time.

A non-transitory computer readable storage medium encoded with a computer program, the program comprising instructions that when executed by one or more data processing apparatus cause the one or more data processing apparatus to perform operations comprising:

• receiving an electrocardiogramaignal corresponding to electrical activity of a patient's heart;
• separating the electrocardiogramaignal into component signals, wherein each of the component signals represents a frequency-limited band;
• detecting fractional phase transitions for each of the component signals;
• generating, at each of the detected fractional phase transitions for each of the component signals, a data object containing a time value and an amplitude value;
• for a set of consecutive data objects, detecting a peak amplitude based on the amplitude value of each data object of the set of consecutive data objects in real time;
• determining, in real time, that the peak amplitude satisfies both (i) a time criterion based on the time value of the data object corresponding to the peak amplitude and (ii) an amplitude criterion;
• and
• in response to determining that the peak amplitude satisfies both the time criterion and the amplitude criterion, continuously providing an indication of a detected heartbeat in real time.