An event signal processing method comprising: receiving an activation signal that indicates sensing of an event from a sensor array (110; 210; 1110 in a sleep mode; determining whether a sensing area (215; 1 to 7) corresponding to the activation signal among a plurality of sensing areas (215; 1 to 7) of the sensor array (110; 210; 1110) is a flickering area; switching the sensor array (110; 210; 1110) from the sleep mode to an active mode based on a determination that the sensing area (215; 1 to 7) corresponding to the activation signal is not a flickering area; and outputting an event signal corresponding to the activation signal based on the determination, characterized in that the determining comprises: increasing a cumulative event number of the sensing area (215;; 1 to 7) corresponding to the activation signal, the cumulative event number being limited by a maximum cumulative threshold; reducing the cumulative event number of each of the plurality of sensing areas based on a first parameter associated with a period to reduce the cumulative event number and a second parameter associated with a degree by which the cumulative event number is reduced; and determining, as a flickering area, at least one sensing area (215; S; 1 to 7) among the plurality of sensing areas (215; 1 to 7) of which the cumulative event number exceeds a threshold. receiving an activation signal that indicates sensing of an event from a sensor array (110; 210; 1110 in a sleep mode; determining whether a sensing area (215; 1 to 7) corresponding to the activation signal among a plurality of sensing areas (215; 1 to 7) of the sensor array (110; 210; 1110) is a flickering area; switching the sensor array (110; 210; 1110) from the sleep mode to an active mode based on a determination that the sensing area (215; 1 to 7) corresponding to the activation signal is not a flickering area; and outputting an event signal corresponding to the activation signal based on the determination, characterized in that the determining comprises: increasing a cumulative event number of the sensing area (215;; 1 to 7) corresponding to the activation signal, the cumulative event number being limited by a maximum cumulative threshold; reducing the cumulative event number of each of the plurality of sensing areas based on a first parameter associated with a period to reduce the cumulative event number and a second parameter associated with a degree by which the cumulative event number is reduced; and determining, as a flickering area, at least one sensing area (215; S; 1 to 7) among the plurality of sensing areas (215; 1 to 7) of which the cumulative event number exceeds a threshold. increasing a cumulative event number of the sensing area (215;; 1 to 7) corresponding to the activation signal, the cumulative event number being limited by a maximum cumulative threshold; reducing the cumulative event number of each of the plurality of sensing areas based on a first parameter associated with a period to reduce the cumulative event number and a second parameter associated with a degree by which the cumulative event number is reduced; and determining, as a flickering area, at least one sensing area (215; S; 1 to 7) among the plurality of sensing areas (215; 1 to 7) of which the cumulative event number exceeds a threshold.