The display device having the function of grouping recorded files and method for controlling the same

A video system having a function of automatically sorting recorded files and a method for controlling the imaging apparatus are provided to automatically sort recorded contents according to grade and genre, and prevent a specific folder stored in the video system from being displayed. A video system(101) includes a decoder(104), a storage unit(105), and a controller(106). The decoder decodes a transport stream of a broadcasting signal to be stored, and extracts rating information of the broadcasting signal. The storage unit stores the broadcasting signal and the rating information together. The controller stores the broadcasting signal in a corresponding folder in the storage unit according to the rating information. When a folder corresponding to the rating information does not exist in the storage unit, the controller creates a new folder corresponding to the rating information and stores the broadcasting signal in the new folder.