Methods and products for facilitating a method of reducing mobile-phone fraud are provided. Suppose a row width of the memory is N bit. The sensor output signals from these two sensors are led to a control device, which is enabled to switch the chairlift system off. Additionally, the respective minimum amounts of the two or more designated portions are different from each other. The captured audio andor video represents feedback from the occupant during the drive event. The display control device and method thereof utilize the phase deviation and the frequency deviation between the output signal and the input signal caused during channel switching to provide converting time acceptable by a display device and to achieve the objective of balancing the data stream transmission.