An emissive display using an organic electroluminescent device is provided, in which the pixel circuit is simplified, the aperture ratio is increased, high resolution is achieved, and the power consumption is reduced. In response, the directory entry is tagged, preferably by setting the entry’s creation time to a null value. The protection portions are arranged and constructed to respectively face longitudinal peripheries edges of the belt that is inserted into the buckle and drawn therefrom. The polarity identifying portion identifies the polarity when the logical data sent from the reception buffer is maintained at a logic level for a predetermined period of time. The detection system further includes means for analyzing at least a portion of the spectrum for indications of embedded material within the interaction region.