Control device, control method and non-transitory computer readable storage medium

A sensor comprising:

• a first substrate that has a first pixel block, including a first photoelectric conversion element for converting light into charges and a second photoelectric conversion element for converting light into charges, and a second pixel block, including a third photoelectric conversion element for converting light into charges and a fourth photoelectric conversion element for converting light into charges;
• and
• a second substrate that is a substrate stacked with the first substrate and that has a first processing block, including a first event detection unit for detecting an event using a signal that is based on the charges converted at the first photoelectric conversion element and a first control unit for performing an exposure control of the second photoelectric conversion element based on a detection result of the first event detection unit, and a second processing block, including a second event detection unit for detecting an event using a signal that is based on the charges converted at the third photoelectric conversion element and a second control unit for performing an exposure control of the fourth photoelectric conversion element based on a detection result of the second event detection unit.