A system-on-chip includes first and second memories, a descrambler, and logic. The magnification steps are read off at the rotational axis of the magnification changer, monitored by a control unit and stored for reproducing the magnification setting. As a result, a support structure is obtained that does not bring a damage on the wavelength filter caused by degradation of optical characteristics or temperature variation of the wavelength filter when support-fixing a wavelength filter having a complex refractive index crystal. The invention further relates to a process for applying the coating to a surface and to a medical device comprising the coating. A hose has a first end and a second end.