Patent ID: 8442691

Claim:
A light source having a plurality of light elements and a control system for controlling said plurality of light elements, the control system comprising: a plurality of light element controllers, each connected to a respective one of said light elements, and arranged to obtain light element data; a bus interface, which is connected to said light element controllers via a light source bus, wherein said bus interface is arranged to provide said light element controllers with a general command, and wherein said light element controllers are arranged to generate light element drive signals on basis of the general command and said light element data, and a sensor interface for detecting properties of the light elements by sensing their light output, the sensor interface being connected to the light source bus and configured to provide a sensor interface signal carrying data about said properties to the light source bus said light element controllers each comprise a symbol tag interpreter and is tagged with at least one symbol tag, wherein said general command each include at least one symbol tag, and wherein there are several different types of symbol tags.