Flow chart of the EOG signal recording.
Fig. 1 illustrated the eye-movement HCI
platform architecture. The eye-movement coils are the electromagnetic
fields that received signal between 50 lV and 3500 lV with a
frequency range of about dc-100 Hz. Eye-movement signals needs
to be adjusted/normalized by signal amplifier, adders and filters.
The filters eliminate the effects due to other bio-potentials, such
as saccadic/blink over to the EOG signal. After that, the EOG signal
is then converted to digital signal and then transmitted to the
computer. The application control component will deal with the
eye-movement and then interact with the desired application.
Therefore, our proposed platform can serve various services.