An electronic device for an automotive lighting device, including a driver and a mixer. The driver includes a power and signal input and has a supply voltage threshold, in such a way that the microcontroller is configured to reset if the voltage value in the power and signal input is lower than the supply voltage threshold. The mixer includes an output connected to the power and signal input of the driver, and is configured to provide an output signal which is related to the highest between the non-permanent signal and the permanent signal inputs.

A vehicle lamp includes a turn signal lamp, a daytime running lamp, and a position lamp. A first driving circuit drives a first light source that is the turn signal lamp. A second driving circuit drives a second light source that serves as both the daytime running lamp and the position lamp. A signal processing device executes a software program to control the first driving circuit and the second driving circuit based on the turn synchronization signal, the first switch-on request, and the second switch-on request.

A light source lighting circuit comprises a first lighting circuit for receiving current from the electric power supply line and supplying drive current to a first light source and a second lighting circuit for receiving the current from the electric power supply line and supplying drive current to a second light source. When a state of the drive current flowing to the first light source shows an abnormality, or when state of the drive current flowing to the second light source shows an abnormality, the first lighting circuit stops operation. When a state of the drive current flowing to the second light source shows an abnormality, or when a state of the drive current flowing to the first light source shows an abnormality, the second lighting circuit stops operation.

A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.

A lamp control device comprises a first input terminal, a second input terminal, an output terminal that is configured to be connectable to a lamp via an external switch and outputs a drive current for the lamp, an internal switch provided on a first path connecting the first input terminal and the output terminal, a constant current section provided on a second path connecting the second input terminal and the output terminal, a voltage monitoring section that monitors a voltage applied to the output terminal, and a control section that controls the internal switch on the basis of a monitoring result from the voltage monitoring section.

A vehicle illumination apparatus is disclosed. The apparatus comprises at least one light generating layer configured to conform to an outer surface of a panel of the vehicle. The light generating layer comprises a plurality of electrodes having a plurality of LEDs in a semiconductor ink disposed therebetween. The plurality of LEDs is operable to emit a first emission. The apparatus further comprises a controller configured to selectively activate the plurality of LEDs in response to a navigational direction of the vehicle.

A vehicle lamp includes a turn signal lamp, a daytime running lamp, and a position lamp. A first driving circuit drives a first light source that is the turn signal lamp. A second driving circuit drives a second light source that serves as both the daytime running lamp and the position lamp. A signal processing device executes a software program to control the first driving circuit and the second driving circuit based on the turn synchronization signal, the first switch-on request, and the second switch-on request.

A driving device includes, for example: an output terminal; a transistor configured to generate an output current to the output terminal; a logic circuit configured to perform on/off control of the transistor at a predetermined period; and a current sense circuit configured to sense the output current. The current sense circuit is configured to be enabled during an on-period of the transistor. The logic circuit is configured to suspend the on/off control and reset the period when the output current becomes lower than a first threshold value during the on-period.

A driving device includes, for example: an output terminal; a transistor configured to generate an output current to the output terminal; a logic circuit configured to perform on/off control of the transistor at a predetermined period; and a current sense circuit configured to sense the output current. The current sense circuit is configured to be enabled during an on-period of the transistor. The logic circuit is configured to suspend the on/off control and reset the period when the output current becomes lower than a first threshold value during the on-period.

A vehicle illumination system and method for controlling a vehicle light. The method includes receiving an input signal at a controller port; generating a control signal to activate the vehicle light based on both a rising and falling edge of the input signal in which the control signal activates an animation sequence when a falling edge is detected.