Abstract: A backlight dimming circuit provides backlight by LED string; a local dimming module controls a grayscale level of the LED string; a current peak adjustment module adjusts a value of a peak output current flowing through the LED string; a drain of a first MOS transistor in a feedback module is coupled to a second terminal of the LED string, a source of which is grounded a first input terminal of an operational amplifier is coupled to a first terminal of the current peak adjustment module or a first terminal of the local dimming module, a second input terminal of the operational amplifier is coupled to the first terminal of the local dimming module or the first terminal of the current peak adjustment module, an output terminal of the operational amplifier is coupled to a gate of the first MOS transistor.

Abstract: The present application provides a disconnection point detection method for single-wire series circuits, a single-wire series circuit, and a driver architecture. The method utilizes the existing parallel bus structure of the single-wire series circuit to detect disconnection points. Specifically, the position of the final short-circuit disconnection point is determined using the first correction command and the second address-assignment information, while the position of the final open-circuit disconnection point is determined using the second and third correction commands along with the third address-assignment information. The present application eliminates the need to add additional backup pins to each driver unit, thereby reducing the packaging cost of the single-wire series circuit and significantly lowering the packaging cost of the driver architecture.

Abstract: A negative feedback circuit, comprising a node, and a control circuit coupled to the node, wherein the control circuit is configured to provide a stabilizing signal in response to a noise signal coupling to the node from a power rail, and the stabilizing signal is configured to reduce the noise signal at the node and the power rail.

Abstract: A method and apparatus for operating a semiconductor light source is presented. In particular there is a current regulator for regulating a current flowing through a light emitting diode device. The current regulator includes a first switch for receiving a first current flowing through the semiconductor light source and a control circuit coupled to the first switch and adapted to provide a second current proportional to the first current. The current regulator is adapted to regulate the first current using the second current.

Abstract: A negative feedback circuit, comprising a node, and a control circuit coupled to the node, wherein the control circuit is configured to provide a stabilizing signal in response to a noise signal coupling to the node from a power rail, and the stabilizing signal is configured to reduce the noise signal at the node and the power rail.

Abstract: A method and an apparatus for charge recycling. The method is comprised of the steps of receiving a charge at an energy storage element from a parasitic component, storing the charge at the energy storage element, and providing the charge stored at the energy storage element to a power supply's input or output. The step of receiving the charge at the energy storage element includes operating a discharging switch to selectively couple the parasitic component with the energy storage element and receiving the charge at the energy storage element via the discharging switch when the energy storage element and the parasitic component are coupled.

Abstract: A dimmer for dimming light emitted by a light source is presented. The dimmer includes a regulation switch for regulating a current flowing through the light source and a regulator circuit that provides an electronic parameter to control the regulation switch. The regulator circuit has a dimmer switch for passing or blocking the electronic parameter, and a signal generator generating a plurality of modulated signals configured to operate the regulator circuit in a first phase and in a second phase. In the first phase the regulation circuit maintains the electronic parameter to a target value. In the second phase the regulation circuit monitors a variation of the electronic parameter and maintains the electronic parameter to a predetermined value.

Abstract: A method and an apparatus for charge recycling. The method is comprised of the steps of receiving a charge at an energy storage element from a parasitic component, storing the charge at the energy storage element, and providing the charge stored at the energy storage element to a power supply's input or output. The step of receiving the charge at the energy storage element includes operating a discharging switch to selectively couple the parasitic component with the energy storage element and receiving the charge at the energy storage element via the discharging switch when the energy storage element and the parasitic component are coupled.

Abstract: A method and apparatus for operating a semiconductor light source is presented. In particular there is a current regulator for regulating a current flowing through a light emitting diode device. The current regulator includes a first switch for receiving a first current flowing through the semiconductor light source and a control circuit coupled to the first switch and adapted to provide a second current proportional to the first current. The current regulator is adapted to regulate the first current using the second current.

Abstract: The present invention provides a reference voltage generator and a corresponding integrated circuit.