The invention provides a detection circuit for detecting light-off modes performed by a silicon-controlled dimmer which comprises a voltage detection circuit receiving an output signal and generating a voltage detection signal according to the output signal, and a delay circuit connected to the voltage detection circuit, receiving the voltage detection signal, and delaying the voltage detection signal in order to output a detection signal. The invention detects the output signal through the voltage detection circuit, and delays the detected voltage detection signal to output the corresponding detection signal, and then the detection signal effectively distinguishes the light-off modes performed by the silicon-controlled dimmer to meet requirements of users.

The invention provides a detection circuit for detecting light-off modes performed by a silicon-controlled dimmer which comprises a voltage detection circuit receiving an output signal and generating a voltage detection signal according to the output signal, and a delay circuit connected to the voltage detection circuit, receiving the voltage detection signal, and delaying the voltage detection signal in order to output a detection signal. The invention detects the output signal through the voltage detection circuit, and delays the detected voltage detection signal to output the corresponding detection signal, and then the detection signal effectively distinguishes the light-off modes performed by the silicon-controlled dimmer to meet requirements of users.

A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.

A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.

Lighting module for a motor vehicle comprising a matrix light source grouping together a plurality of elementary light sources, and a control module for a motor vehicle. Method for controlling the matrix source of said module, noteworthy in that it allows a default lighting setpoint to be generated.

Lighting module for a motor vehicle comprising a matrix light source grouping together a plurality of elementary light sources, and a control module for a motor vehicle. Method for controlling the matrix source of said module, noteworthy in that it allows a default lighting setpoint to be generated.

Disclosed herein are transconductance circuits, as well as related methods and devices. In some embodiments, a transconductance circuit may include an amplifier having a first input coupled to a voltage input of the transconductance circuit, and a switch coupled between an output of the amplifier and a second input of the amplifier.

An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

An expander circuit may be configured to control a plurality of driver circuits for driving light emitting diodes (LEDs). The expander circuit may comprise a bus interface circuit configured to receive control signals from a processor over a communication bus, and a plurality of modulation signal generators configured to generate modulation signals based on the control signals. The expander circuit may be configured to provide the modulation signals to the plurality of driver circuits for driving the LEDs.