A system that provides information about media content stored in a storage device coupled to an interactive media services client device. At least two modulation electrodes are provided, at least one of which is disposed in proximity to a readout-electrode in such a manner that, depending on the polarity sign of the modulation voltage of the modulation electrode, the current flowing across the readout electrode is positive or negative. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. An outer edge of the top portion has two ears which are arranged at two opposite ends of a radius line. An electrically conductive encapsulant is provided that overlies the electrically insulating encapsulant, the electrically conductive encapsulant being coupled to the electrically conductive dam structure. The addition of alkalihalide XY results in an enhanced energy transfer from the first to the second lanthanide ion, whereby the lower energy level of the first lanthanide ion is depopulated.