A bipolar high output current buffer is disclosed using a negative feedback current mirror to supply the base drive to an output transistor. In a first aspect, active circuitry is embedded in the ICM. The motor has a rotor and a stator. The processing calculates for each macroblock of a top half-frame and a bottom half-frame a respective top motion coefficient and a bottom motion coefficient depending on the estimation of the motion vectors of the top half-frame and the bottom half-frame. The carbide layer provides an etch stop for etching the overlying oxide layer, and the underlying oxide layer provides an etch stop for etching the carbide layer to form an emitter-base contact opening.