Patent ID: 8669714

Claim:
A process to dim a light emitting diode device for a motor vehicle, where the brightness of the light emitting diodes is adjusted continuously, said process comprising; providing a pulse width signal emitted by a digital pulse width modulator; modulating the pulse width signal as a function of a specified target value with a variable on-period (T ein ) and a simultaneously correspondingly variable period length (T P ); computing the on-period (T ein ) from the formula T ein =N(T ein-soll *T ein-max /100) and the period length (T P ) from the formula T P =N (100*T ein /T ein-soll ), where N denotes the formation of an integer derived from the following value in parentheses, T ein-soll is a target value in % for the current on-period, and T ein-max is a maximum period length; and whereby the brightness of the light emitting diode may be changed without perceptible jumps in light intensity.