Photoplethysmogram (PPG) sensing module and device including the same

A photoplethysmogram (PPG) sensing chip comprising:

• a plurality of optical sensors configured to receive light from a user and generate a plurality of sensing signals, each of the plurality of sensing signals being generated by one of the plurality of optical sensors;
• a read-out signal generating circuit configured to receive the plurality of sensing signals from the plurality of optical sensors and generate a plurality of read-out signals by performing an analog-to-digital conversion operation on the plurality of sensing signals;
• and
• a signal processing circuit configured to:
• receive the plurality of read-out signals,
• generate a PPG signal by using the plurality of read-out signals,
• measure a movement component of the user derived from position information about the plurality of optical sensors, and
• remove the movement component from the PPG signal.

An apparatus comprising:

• a memory storing one or more instructions;
• and
• a processor configured to execute the one or more instructions to:
• receive a plurality of read-out signals generated based on reflected light from a user that is detected by a plurality of optical sensors,
• classify the plurality of read-out signals according to one or more movement patterns of the user,
• measure a movement component of the user derived from the classified plurality of read-out signals, and
• generate a photoplethysmogram (PPG) signal in which the movement component is removed.