The present invention can reliably adjust the lip-sync between an video and audio at a decoder side, without making the viewer feel strangeness. The functional block has multiple power modes and includes one or more semiconductor devices and a substrate bias rail routed within the functional block and coupled to a substrate connection of at least one semiconductor device. , an intermediate bulk container or IBC, comprises an aperture in the form of an outlet having a closure device in the form of a discharge valve movable between a position to obturate the outlet and a position to allow flow of material through the outlet, and an integral member which is adapted to secure the valve in the obturated position. In the annulus, the fluid pressure creates a pressure differential between the wellbore annulus pressure and a pressure chamber on second sleeves on the tubing.