Abstract: A lighting device in a motor vehicle includes a number of illumination devices, which each generate colored light via a plurality of color channels. The illumination devices can be controlled using an electronic control unit. An illumination state of a respective illumination device can be adjusted by color component values and a brightness end value for all color channels. The electronic control unit calculates a color value from the illumination state to be adjusted for each color channel based on the color component value of the respective color channel and the brightness value. The color value is supplied to the respective illumination device. The electronic control unit processes a brightness threshold value used during a dimming-down/dimming-up process for switching-off/on the respective illumination device. The brightness threshold value is determined by the electronic control unit and increases as the lowest color component value decreases.

Abstract: A lighting device comprises a plurality of light-emitting devices, which are connected to a communication bus in the motor vehicle and receive successive messages from an electronic control unit. The light-emitting devices of the plurality of light-emitting devices are divided into a plurality of groups. Each group is formed of one or more light-emitting devices. One group is associated with each message. Each message specifies one or more operating parameters for an individual light-emitting device. A light-emitting device that is in the associated group of a received message performs its operation based on the operating parameter(s). The electronic control unit changes the division of the plurality of light-emitting devices in groups at least once during the operation of the lighting device.

Abstract: A lighting device in a motor vehicle includes a number of illumination devices, which each generate colored light via a plurality of color channels. The illumination devices can be controlled using an electronic control unit. An illumination state of a respective illumination device can be adjusted by color component values and a brightness end value for all color channels. The electronic control unit calculates a color value from the illumination state to be adjusted for each color channel based on the color component value of the respective color channel and the brightness value. The color value is supplied to the respective illumination device. The electronic control unit processes a brightness threshold value used during a dimming-down/dimming-up process for switching-off/on the respective illumination device. The brightness threshold value is determined by the electronic control unit and increases as the lowest color component value decreases.

Abstract: A lighting device comprises a plurality of light-emitting devices, which are connected to a communication bus in the motor vehicle and receive successive messages from an electronic control unit. The light-emitting devices of the plurality of light-emitting devices are divided into a plurality of groups. Each group is formed of one or more light-emitting devices. One group is associated with each message. Each message specifies one or more operating parameters for an individual light-emitting device. A light-emitting device that is in the associated group of a received message performs its operation based on the operating parameter(s). The electronic control unit changes the division of the plurality of light-emitting devices in groups at least once during the operation of the lighting device.