Patent ID: 8430510

Claim:
A noise reduction device comprising: a saccade information obtaining unit configured to obtain saccade information from an electro-oculography original signal that indicates an electro-oculogram resulting from an eye movement of a user, the saccade information relating to a saccadic movement which is a rapid eyeball movement; a control unit configured to determine a filter property for reducing noise included in the electro-oculography original signal, on the basis of the saccade information obtained by said saccade information obtaining unit; and a filtering unit configured to reduce the noise included in the electro-oculography original signal using the filter property determined by said control unit, to output an electro-oculography signal, wherein said filtering unit includes a high pass filter, wherein said saccade information obtaining unit includes a saccade detecting unit configured to output a saccade detection signal in the case where a saccade signal indicating the saccadic movement is included in the electro-oculography original signal, wherein said control unit is configured to change a cutoff frequency of the high pass filter according to the saccade detection signal, and wherein said filtering unit is configured to output the electro-oculography original signal using, as the filter property, the cutoff frequency having a value obtained by said control unit changing the cutoff frequency according to the saccade detection signal.