Identification of passive components for electronic devices

摘要

In an arrangement and a method for detection and/or identification of components detachably connected to an electronic device a first light beam (I1) is sent from the device (1) to the component (10). Inside the component (10) the light beam (I1) is coded with a signal by coding means (13) and thereupon reflected back by second light emitting means (12) to the device (1) where it is received by light receiving means (3) and can be processed to derive a component's identification information comprised in the signal.