A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The video processing interface generates the tap coefficient from the tap generation information of the one video processor card and the other video processor card loaded therein. The door platen is placed in its closed position, and the moveable mold platen is brought up adjacent to it, so that the two portions of the mold are brought into engagement with one another. The discharge is stable over time and has relatively low peak currents associated therewith. The values are calculated to permit the third device to authenticate the first and second devices without the third device receiving the shared secret value.