A remote storage digital video recorder system receives a media content file that is stored in a storage architecture of the RS-DVR system. The system includes a computer and a display device and a computer implemented workplace application. The heterodyne commutating mixer also includes a plurality of inductors added across differential in-phase output terminals and quadrature output terminals. As such, no additional half-wave plates and quarter-wave plates are needed. The line connects the angle point of the region which the part belongs to and the cross point of the horizontal axis line and the vertical axis line of the region which the part belongs to.