An active matrix substrate includes a gate electrode formed on an insulating substrate, and a planarizing film formed on the gate electrode and made of a baked SOG material. The top surface of the central mesapost 30 is located at a lower position compared to the top surface of the peripheral area 54. The protection layer is disposed on the black matrix and the transparent region, and the first transparent electrode is disposed on the protection layer and within the transparent region, wherein the first transparent electrode, the transparent substrate and an external electrode form a touch sensing capacitor. Underflow and overflow conditions are detected and the controller adapts the effective elastic buffer depth to compensate for these conditions. The method comprises the steps of creating sets of recorded messages according to distinct personalities for interacting with the voice mail system, selecting a recorded message from the plurality of sets of recorded messages based on interactive inquiries between the user and the voice mail system, and personalizing the selected recorded message responsive to the information provided by the user. In particular, in generating the intermediate image, an attribute of the pixels on one image may be used as such without the attribute being interpolated between pixels of each image.