A touch screen device and an operating method thereof are provided. An unconstrained optimization process is performed independently for the subchannels of the different QoS regions to allocate bit rates and power to the individual subchannels so that the indicated QoS will result. An exhaust is connected to the cylinder interior. The block is then removed and dry ice extruded to a desired length and then broken to give a slab of dry ice. The second display unit includes an information-image display region which displays an information-image corresponding to the at least single piece of notification information, and a guide display region which displays a guide-image for guiding a driver’s eye to a side of the information-image display region.