In a speedometer control system having wheel speed sensors as well as a vehicle speed sensor, both a PCM and a brake ECU are used to obtain vehicle speeds. The multi-layer film stack comprises a transparent electrically conductive metal oxide layer deposited over the dielectric substrate, the conductive metal oxide layer having a refractive index less than 2. The insulative substrate can exhibit a CTE sufficiently close to a CTE of the semiconductive material layer such that a strain of less than 1% would exist between a 1000 Angstroms thickness of the semiconductive material layer and the insulative substrate. The air sterilization apparatus may also include an illuminator lamp to provide illumination to a room. In order to defend packet sequences from group losses, the FEC packets are dispersed within the packet stream in such a manner that the packets of the same sequence are located as far as possible from each other.