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.

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.

The present embodiment relates to a communication protocol between an MCU and an LED driving circuit for LED driving. The MCU may define and use an SPI protocol including ID setting, a command, configuration data, etc.

Provided is a camera using a light source having a subject eye protection function. The camera includes a light source driver installed between a power supply and a light source for emitting light to a subject and configured to convert electric power supplied by the power supply to a pulse current, a light source driver controller configured to control the light source driver to be turned on or off such that the light source driver converts the electric power supplied by the power supply to the pulse current, a current measurement unit configured to measure the pulse current supplied to the light source, an amplitude controller configured to control an amplitude of the pulse current measured by the current measurement unit, a smoothing circuit configured to smooth the pulse current of which the amplitude is controlled by the amplitude controller, and a comparator controller configured to control the electric power supplied by the power supply to be interrupted in a case in which the smooth current smoothed by the smoothing circuit is greater than a preset threshold value.

A luminaire comprising: at least one light source for emitting light to illuminate an environment; an optical sensor comprising an array of photodetectors, the sensor configured to output image data indicative of the intensity of light incident on the photodetectors; and a controller arranged to receive the image data, the controller comprising: a presence detection module configured to process the image data to detect whether a being is present in said environment, and control the light emitted by the light source(s) responsive to said detection; a light sensing module configured to process the image data to determine a light level in said environment and control the light emitted by the light source(s) based on said light level; and a commissioning module configured to control the controller to operate in a commissioning mode based on the image data; and configure the luminaire in accordance with a commissioning command received whilst the controller is operating in the commissioning mode.

The present disclosure relates to a technology for performing a hybrid driving in order to increase accuracy of a low current driving when driving a light emitting diode and allows an LED driving circuit to perform a PWM driving when a current is low and to perform a PAM driving when a current is high and this leads to an elaborate adjustment of a grayscale.

The present disclosure relates to a technology for performing a hybrid driving in order to increase accuracy of a low current driving when driving a light emitting diode and allows an LED driving circuit to perform a PWM driving when a current is low and to perform a PAM driving when a current is high and this leads to an elaborate adjustment of a grayscale.

A display panel is disclosed. The display panel may include a plurality of LED elements, and may further include a substrate including a first driving circuit including a pulse width modulation (PWM) driving circuit and a second driving circuit including a pulse amplitude modulation (PAM) driving circuit. The plurality of LED elements may include a first LED element configured to emit light of a first color, and which is controlled by the first driving circuit, and a second LED element configured to emit light of a second color different from the first color, and which is controlled by the second driving circuit.

A display panel is disclosed. The display panel may include a plurality of LED elements, and may further include a substrate including a first driving circuit including a pulse width modulation (PWM) driving circuit and a second driving circuit including a pulse amplitude modulation (PAM) driving circuit. The plurality of LED elements may include a first LED element configured to emit light of a first color, and which is controlled by the first driving circuit, and a second LED element configured to emit light of a second color different from the first color, and which is controlled by the second driving circuit.

A LED dimming circuit, including a low-level-voltage generation module, a high-level-voltage generation module, a base-voltage generation module, and a dimming-signal generation module. By counting the high and low levels of a low-frequency PWM signal, high and low-level voltages with respect to time are obtained; a constant current source and a capacitor are used to convert high-frequency switching signals to a DC base voltage that is only related to the duty cycle of the low-frequency PWM signal. When the base voltage is greater than a predetermined voltage, the base voltage is output as the dimming signal; when the base voltage is less than the predetermined voltage, a new PWM signal is output as the dimming signal, whose magnitude is the same of that of the predetermined voltage, wherein the average values of the new PWM signal and the base voltage are the same.