A very fine anti-glare hard coat film which comprises a base film and a hard coat layer disposed on the base film and has a haze of 3% or greater, wherein the hard coat layer comprises a resin cured by an ionizing radiation and, per 100 parts by weight of the resin, 2 to 25 parts by weight of silica particles having an average diameter of 0. Detecting the later is performed through analytically determined exclusion zone on the power flow map or by on-line stability calculations for several high power channels. Subsequently, upon receiving an address signal, the nonvolatile memory outputs a test signal and an expectation signal based on test data and expectation data corresponding to the address signal.