A visible luminance step in a background scene, caused by a signal level mismatch between a matte signal level and a blue backing signal level, is significantly reduced by a soft edge transition region that raises the blue backing signal level up to the signal level of a garbage matte by using a cleanup signal restricted to the transition region. The RX processing components receive a baseband RX signal from the RF front end, produce a set of IR samples from the baseband RX signal, and transfer the set of IR samples to the memory. The different timing includes small delays to spread crowbar currents over a short period, enabling an increasing number of drivers with increasing initial charge of the capacitor, and disabling drivers while others remain enabled, in order to reduce peak currents and kick-back voltages. If the service order corresponds with the new service order type, then the service order is processed by the network management system. To provide a hard-metal cutting tip that possesses high cutting, feed, bending and breaking strength and wear resistance, especially at its outer regions subjected to high peripheral speeds, the hard-metal cutting tip is realized such that the primary lip clearance angle formed at the primary cutting edge decreases with increasing distance from the drill point. The signal processing part executes re-processing with respect to the unprocessed image data read out from the first memory, in accordance with new image property parameter data that is newly set by the user.