The technique capable of reducing the power consumption in the MISFET by suppressing the scattering of the carriers due to the fixed charges is provided. Multiple guns are maintained in modular gun chambers that can be vacuum isolated from the primary vacuum chamber containing the targets. The first clip is delivered a priori to the customer’s Digital Video Recorder using a hidden channel and it is made available for purchase on demand. Furthermore, the present invention can simplify a data drive circuit and achieve the uniformity of brightness between pixels. The method includes communicating the dispatched application message to the client using the single push channel.