According to one embodiment, a parallax image generating apparatus is for generating, using a first image, a parallax images with a parallax therebetween. In some embodiments, the throat plates andor saws include at least one securement mechanism adapted to secure and prevent inadvertent removal of the throat plate from the throat of the saw. The slits in the common electrode and the slits in the pixel electrode stagger from one another. The trace procedure is invoked at the determined frequency to perform trace procedure operations comprising determining a region in the memory device according to the monitor parameter and copying data in the determined region to trace data in a data space.