An input apparatus for inputting information according to proximity of an object, the apparatus comprising: a detection unit (10A-1 to 10A-N) that is configured to repeatedly generate a detection signal according to a degree of proximity of the object, wherein the detection unit (10A-1 to 10A-N) is further configured to generate a drift simulated signal that undergoes a change having correlation with a drift in the detection signal due to repeated generation of the detection signal in the detection unit (10A-1 to 10A-N); and a correction unit that is configured to correct the detection signal according to the change in the drift simulated signal at least one of when repeated generation of the detection signal in the detection unit (10A-1 to 10A-N) is started and when an interval for repeatedly generating the detection signal in the detection unit (10A-1 to 10A-N) is changed, wherein the detection unit (10A-1 to 10A-N) includes: a detection electrode that forms a capacitor whose capacitance changes according to the degree of proximity of the object; and a capacitance detection circuit that is configured to repeatedly generate the detection signal according to an electric charge of the capacitor transmitted via the detection electrode, characterised in that the detection unit (10A-1 to 10A-N) includes a switch circuit disposed on a path that transmits the electric charge of the capacitor, between the detection electrode and the capacitance detection circuit, the switch circuit switching between on-state and off-state alternately when the detection signal is corrected in the correction unit, and the capacitance detection circuit is configured to generate the detection signal when the switch circuit is in on-state, and to generate the drift simulated signal when the switch circuit is in off-state. a detection unit (10A-1 to 10A-N) that is configured to repeatedly generate a detection signal according to a degree of proximity of the object, wherein the detection unit (10A-1 to 10A-N) is further configured to generate a drift simulated signal that undergoes a change having correlation with a drift in the detection signal due to repeated generation of the detection signal in the detection unit (10A-1 to 10A-N); and a correction unit that is configured to correct the detection signal according to the change in the drift simulated signal at least one of when repeated generation of the detection signal in the detection unit (10A-1 to 10A-N) is started and when an interval for repeatedly generating the detection signal in the detection unit (10A-1 to 10A-N) is changed, wherein the detection unit (10A-1 to 10A-N) includes: a detection electrode that forms a capacitor whose capacitance changes according to the degree of proximity of the object; and a capacitance detection circuit that is configured to repeatedly generate the detection signal according to an electric charge of the capacitor transmitted via the detection electrode, a detection electrode that forms a capacitor whose capacitance changes according to the degree of proximity of the object; and a capacitance detection circuit that is configured to repeatedly generate the detection signal according to an electric charge of the capacitor transmitted via the detection electrode, characterised in that the detection unit (10A-1 to 10A-N) includes a switch circuit disposed on a path that transmits the electric charge of the capacitor, between the detection electrode and the capacitance detection circuit, the switch circuit switching between on-state and off-state alternately when the detection signal is corrected in the correction unit, and the capacitance detection circuit is configured to generate the detection signal when the switch circuit is in on-state, and to generate the drift simulated signal when the switch circuit is in off-state.