A multiplexing video decoding apparatus for decoding video signals of a plurality of channels and a method therefore are provided. According to one embodiment, the telepresence portal system includes a host portal having a plurality of host transparent displays arranged to face different sides of a host user. The compounds of this invention are inhibitors of poly polymerase and are therefore useful as pharmaceutical agents, especially in the treatment andor prevention of a variety of diseases, including diseases associated with the central nervous system and cardiovascular disorders. The system and method can be carried out in connection with various cellular system technologies, but is especially suited for use with GSM systems. A crystal formation state of a biopolymer is optically observable from the electrode side of a transparent conductor.