An optical unit is provided for an optical pick-up apparatus which includes a light source to emit light entering into a recording medium. The first predictive filter generates a filtered characterizing value. When applied to a substrate and cured, these coating compositions demonstrate reduced permeability to hydrogen sulfide. Then, a charge trapping structure and a main gate are formed on a sidewall of the patterned dielectric layer and the patterned first conductive layer. User input is not needed to accomplish the creation of the new term in the database.