A rack equipment application performance modification system and method is disclosed for providing a convenient and efficient manner to modify performance of rack equipment based upon an application. Another airbag system includes an airbag body expanding from an upper surface of an engine hood on the front portion of a vehicle body frame and blowing up toward a windshield of the engine hood. A lighting order is determined so that, continuously from a lighting order of pixels forming a first tetragon of the tetragons of the basic pattern in order of increasing distance from a specific point of the first tetragon, pixels are lit in order of decreasing distance from the specific point, and a rectangular pattern functioning as a binarization-use pattern is generated. The working chamber is connectable selectively to the vacuum chamber and the atmosphere to generate and reduce a differential pressure at the movable wall. The output data generation unit generates output data dependent on a result of detecting a gesture.