Abstract: The invention is based on the object of improving the installation and maintenance of lighting systems and of presenting a light segment and a lighting system which are adapted thereto in terms of design. This object is achieved by a method for changing the status of light segments 3 in a lighting system 1, the light segments 3 being connected to one another via a serial data connection 6, the status change comprising the following steps: the serial data connection 6 is interrupted in or at the light segments 3; an item of status change information is transmitted to a first light segment 3 I via the serial data connection 6; the serial data connection 6 is restored in the first light segment 3 I; an item of status change information is transmitted to a second light segment 3 II via the serial data connection.

Abstract: In order to dim the brightness of the mixed-color light from an LED light (11) with LED arrays (12r, 12g, 12b) which emit different colors, in particular in the passenger cabin of an airliner, the current-flow time intervals (tr, tg, tb) which can be adjusted such that they are different over the various arrays (12) are shortened in steps during initially constant working period lengths (ta).

Abstract: A method of announcing an apparatus to a system containing a central apparatus and at least one individual apparatus is distinguished in that the announcement is effected by optical communication, preferably in the infrared range. In that respective information about the apparatuses in the system is stored in the central apparatus.