Patent ID: 8357101

Claim:
An electro-oculography apparatus that measures an eye potential of a user, said electro-oculography apparatus comprising: an eye potential measuring unit configured to measure the eye potential generated by an eye movement of the user and to output an eye potential original signal based on the measured eye potential; a first filtering unit configured to receive the eye potential original signal output from said eye potential measuring unit and to output a first eye potential signal by applying one of a maximum value filtering and a minimum value filtering to the received eye potential original signal; a second filtering unit configured to receive the first eye potential signal output from said first filtering unit and to output a second eye potential signal by applying the other of the maximum value filtering and the minimum value filtering to the received first eye potential signal; and a filtering detail determination unit configured to determine the filtering to be performed by said first filtering unit and said second filtering unit, based on a blink signal included in the eye potential original signal, the blink signal being generated when the user blinks, wherein, for a signal comprising a plurality of samples, the maximum value filtering replaces a value of each respective sample with a sample value having a largest amplitude from among a plurality of samples centering on the respective sample, wherein, for a signal comprising a plurality of samples, the minimum value filtering replaces a value of each respective sample with a sample value having a smallest amplitude from among a plurality of samples centering on the respective sample, and wherein, when the blink signal has a positive potential, said filtering detail determination unit causes said first filtering unit to perform the minimum value filtering to the received eye potential original signal and causes said second filtering unit to perform the maximum value filtering to the received first eye potential signal.