Provided is a method of detecting important information from a moving picture. The switches generally include a collection of nanoslits formed in a thin electrically conductive film. Fluctuations of the latch-up phenomenon and operation speed can be prevented by turning on switching transistors Tps and Tns and setting the n-type well 2 and the p-type well 3 to the voltages Vdd and Vss, respectively. While the nose andor tail structure is uncoupled from the integral hull-plus-cabin structure, the modules are inserted into the cabin and the cabin is sealed.