A device for processing media may include a front panel, a rear panel, a side panel, a support surface, and an access door assembly. A temperature compensation circuit is coupled to the CMOS current mirror circuit, and contains a first resistor, a second resistor, and third and fourth CMOS transistors of a second polarity. The PMD pulses are then coupled to a Mach-Zender interferometer that measures the differential delay between them and selectively compensates for the measured differential delay. The PVA sheet is preferably in the form of an uncoated non-woven of a thickness of 8 mil or less. In this way, the different visual objects within the same frame can be rendered using either approach, either at the server or at the client. According to the present invention, a SiaCbNc layer which can be doped with a high concentration is intervened between a p-type nitride semiconductor layer and a p-side electrode.