An integrated-cycle power system and method, comprising thermal transfer assembly, recuperating heat exchanger assembly, heat integrator, thermal conduit assembly and gas turbine. The vehicle seat is provided with a channel, and is configured such that the channel is formed on the lower surface of the seat part, thus preventing the deformation of the channel, maintaining a ventilation pathway to be intact even when a passenger is sitting on the seat for a long period of time, and enabling the passenger to constantly feel comfortable in the seat part. Then, the embodiment, from the imaged picture, extracts a picture within the set still picture extraction range as still picture, and extracts a picture within the set moving picture extraction range as HD moving picture.