30results about How to "Won't flicker" patented technology

The invention provides a gate driver on array unit, a gate driver on array circuit and a display device. The gate driver on array unit comprises a grid drive module and a light emission control module, wherein the grid drive module is used for generating grid drive signals, the light emission control module is connected with a grid drive signal output end of the grid drive module and used for generating light emission control signals for controlling an organic light-emitting diode under the control of the grid drive signals, and the grid drive signals and the light emission control signals are inverted. By the aid of the gate driver on array unit, the gate driver on array circuit and the display device, the grid drive signals can be generated while the light emission control signals inverted with the grid drive signals can be also generated to enable an OLED (organic light emitting diode) device to be at the off state in the process that display data are written into pixel cells, and after the display data are written into the pixel cells, the OLED device is turned on for light emission, so that flicker of display images due to instability of a pixel circuit during data writing is guaranteed to be avoided.

The invention provides a light-emitting control circuit, a light-emitting control method and a shift register. The light-emitting control circuit comprises an input terminal, an input sampling unit, an output unit, a reset unit, an output pulling-down unit and a light-emitting control signal output terminal, wherein the input sampling unit is used for sampling an input signal under the control of a first clock signal, the output unit generates a light-emitting control signal under the control of a second clock signal after the input signal is sampled by the input sampling unit, and the reset unit is used for resetting the light-emitting control signal under the control of a third clock signal through the output pulling-down unit. The invention can ensure that an OLED (Organic Light Emitting Diode) device is in a closed state in a process of writing display data into a pixel unit, and after the display data are written into the pixel unit, the OLED device is switched on to emit light so as to ensure that a display image cannot flicker due to the unstable state of a pixel circuit when the data are written into the pixel unit.

The invention discloses an AC (Alternating Current) dimming drive circuit for an LED (Light-Emitting Diode). The AC dimming drive circuit comprises a rectification unit and N levels of LED DC (Direct Current) drive circuits, wherein in the ith-level LED DC drive circuit, a first end of an ith voltage sampling unit and the input end of an ith LED light source module directly or indirectly receive the output voltages of the rectification unit; the voltage diving end of the ith voltage sampling unit is connected with a second input end of an ith switching unit; a first input end of the ith switching unit is connected with the output end of the ith LED light source module; the output end of the ith switching unit, a second end of the ith voltage sampling unit and a second output end of the rectification unit are grounded; when the ith switching unit is switched on, the first to ith LED light source modules emit light; and when the ith switching unit is switched off, if i is less than N, the first to (i+1)th LED light source modules emit light, and if i is equal to N, the first to Nth LED light source modules stop emitting light. By utilizing the dimming drive circuit, the AC direct drive LED light source module is realized and cannot twinkle when the AC voltage fluctuates.

The invention discloses a backlight source driving method, device thereof, a readable storage medium, a backlight source, a display module and a virtual reality device. The backlight source driving method is applied to a liquid crystal display module. The backlight source comprises multiple rows of light sources arranged in a matrix. The method comprises steps: after preset time of synchronous display signals of a frame of image displayed by the liquid crystal display module is received, within the time of displaying one frame of image, each row of light sources is lighted one by one, and eachrow of light sources performs at least twice on and off and flickering. The method can solve the image smear problem, and besides, image flickering is not caused, and the image display quality is improved.

The invention relates to an LED dimming driving circuit, which includes a rectifying unit and an N-level LED direct current driving circuit. Wherein, the i-th LED DC drive circuit is composed of an i-th voltage sampling unit, an i-th switching unit and an i-th LED light source module. N is a natural number, i=1,2,3,...,N; the first end of the i-th voltage sampling unit and the input end of the i-th LED light source module are jointly connected to the first output end of the rectification unit when i is 1 , when i is not 1, they are commonly connected to the output end of the i‑1th LED light source module. The second end of the i-th voltage sampling unit is grounded, and the voltage dividing end of the i-th voltage sampling unit is connected to the second input end of the i-th switch unit. The first input end of the i-th switch unit is connected to the output end of the i-th LED light source module, and the output end of the i-th switch unit and the second output end of the rectification unit are grounded. The invention is compatible with traditional thyristor dimmers, and realizes adjustment of brightness, color temperature or color without separate wiring.

Disclosed is an alternating current dimming drive circuit for an LED, comprising a rectification unit and N stages of LED direct current drive circuits. In the ith stage of LED direct current drive circuit, a first end of the ith voltage sampling unit and an input end of the ith LED light source module directly or indirectly receive the output voltage of the rectification unit; a voltage division end of the ith voltage sampling unit is connected to a second input end of the ith switch unit; and a first input end of the ith switch unit is connected to an output end of the ith LED light source module, and an output end of the ith switch unit, a second end of the ith voltage sampling unit and a second output end of the rectification unit are grounded. When the ith switch unit is switched on, the first to the ith LED light source modules emit light. When the ith switch unit is switched off, if i is less than N, the first to the (i + 1)th LED light source modules emit light, and if i is equal to N, the first to the Nth LED light source modules stop emitting light. The present invention realizes an alternating current directly-driven LED light source module and will not flicker in the case of alternating current voltage fluctuation.

The present invention provides an array substrate row driving unit, an array substrate row driving circuit and a display device. The array substrate row driving unit comprises an gate driving module for generating an gate driving signal and an emission control module; the emission control module, connected to the output for the gate driving signal of the gate driving module, for generating an emission control signal for controlling the switching of OLED under control of the gate driving signal, the gate driving signal having an opposite phase to that of the emission control signal.

A light-emitting control circuit, a light-emitting control method and a shift register. The light-emitting control circuit comprises an inputting terminal (Input), an input sampling unit (11), an outputting unit (12), a resetting unit (13), an output pulling-down unit (14) and an outputting terminal for a light-emitting control signal (EM[n]). The input sampling unit (11) samples an input signal under a control of a first clock signal (CK1); the outputting unit (12) generates a light-emitting control signal under a control of a second clock signal (CK2) after the input sampling unit (11) samples the input signal; the resetting unit (13) resets the light-emitting control signal through the output pulling-down unit (14) under a control of a third clock signal (13). An OLED device is in an OFF state during a process for writing display data into pixel cells and the OLED device is turned on to emit light after the display data is written into the pixel cells, thus a display image is guaranteed not to generate flickers due to an unstable state of a pixel circuit as the data is written.

The invention relates to a method and / or apparatus to improve the visual perception of an image displayed on a liquid crystal (LCD) panel, said method comprising steps for generating an adjusting signal (PE,i+1) of a rear-lighting lamp of said panel depending on an target power value (PT) and for generating a control signal (CE,i+1) of the image contrast depending on said adjusting signal (PE,i+1) of the rear-lighting lamp so as to increase / decrease the contrast of the displayed image when said adjusting signal (PE,i+1) of the rear-lighting lamp decreases / increases.

The invention discloses an anti-jamming system and method applied to medical displays, comprising a decoding unit, a video sequence detection unit connected to the decoding unit, an interference judging unit connected to the decoding unit and the video timing detection unit, and an interference judging unit connected The first video delay unit, the synchronization signal regeneration unit connected with the decoding unit and the video timing detection unit, the second video delay unit connected with the synchronization signal regeneration unit, the interference determination unit, the first video delay unit and the second video delay unit A video gating unit connected to the video delay unit, a medical image processing unit connected to the video gating unit, a coding unit connected to the medical image processing unit, and a display unit connected to the coding unit. Advantages: When the synchronous signal is disturbed, the present invention has the synchronous signal regeneration function, so that the content of the picture will not be displaced, the picture will not flicker, and the damaged picture content can be displayed correctly to the greatest extent.

The invention is a kind of series remote controller for a kind of switch power, the character lies in: the receiving controller is made up of silicon control electron switch circuit, switch power circuit, remote control reception and manual control circuit. The silicon control electron switch circuit, the switch power circuit, the remote control reception and the manual control circuit are connected; the receiving controller is connected between the circuit power and the load in series. The invention upgrades the complete appliance performance, it doesn't change the light distribution and the light fitting, it solves the technology problem that the energy-saving light such as fluorescence lamp and the energy-saving light can't be controlled reliably. The cost is low, the process is simple, and the assembly is convenient.

A method and a system for displaying images in plural display devices are provided to enable a control unit to process the first and second synchronization information and generate horizontal / vertical synchronization timing signals according to the above synchronization information, thereby preventing sync timing delay and displaying normal images. A method for displaying images in plural display devices comprises the following steps of: receiving R,G,B(Red,Green,Blue) signals and the first and second synchronization information in R,G,B input terminals(S100); checking the second synchronization information while obtaining the table value of horizontal / vertical synchronization signals based on the first received synchronization information(S110); intercepting that the table value is generated in an ADC(Analog to Digital Converter) if the second synchronization information is 1 and making the table value generated in the ADC if the second synchronization information is not 1 to convert the R,G,B signal into digital signals(S120~S140); and scaling and displaying the analog-to-digital converted signal(S150,S160).

A light emitting control circuit, a light emitting control method, and a shift register. The light emitting control circuit comprises an input end (input), an input sampling unit (11), an output unit (12), a reset unit (13), and a light emitting control signal output end (EM[n]). The input sampling unit (11) samples an input signal under the control of a first clock signal (CK1). The output unit (12) generates a light emitting control signal under the control of a second clock signal (CK2) after the input sampling unit (11) samples the input signal. The reset unit (13) resets the light emitting control signal under the control of a third clock signal (CK3) after the output unit (12) generates the light emitting control signal. The light emitting control circuit and the light emitting control method can ensure that an OLED device is in a closed state in a process of writing display data into a pixel unit, and the OLED device is switched on to emit light after the display data is written into the pixel unit, thereby ensuring that a display image does not flicker because of an unstable state of a pixel circuit when data is written.

The invention discloses a two-wire system intelligent switch power-taking mechanism. The two-wire system intelligent switch power-taking mechanism is characterized in that the input end of a voltage division unit is connected with an input live wire of the mains supply; the output end of the voltage division unit is connected with a lamp wire; the two input ends of a voltage transformation unit are connected with the input end and the output end of the voltage division unit respectively; the output end of the voltage transformation unit is connected with a control unit; the control unit is connected with a switch unit; the input end of the switch unit is connected with the input end of the voltage division unit; the output end of the switch unit is connected with the output end of the voltage division unit; the lamp part is provided with an electromagnetic switch and a piezoresistor; the electromagnetic switch is provided with a normally-open switch and a driving coil; the input end ofthe normally-open switch is connected with the output end of the voltage division unit; the output end of the normally-open switch is connected with the first power supply input end of the lamp; oneend of the piezoresistor is connected with the output end of the voltage division unit while the other end of the piezoresistor is connected with one end of a driving coil; and the other end of the driving coil is connected with a second power supply input end of the lamp. When the lamp is turned off, the lamp does not flicker, and power taking in a shunting manner through the lamp is not needed.

The invention discloses an intelligent switch split electricity taking mechanism. The mechanism is characterized in that an input end of a voltage dividing unit is connected with an electric supply input fire wire, an output end of a voltage dividing unit is connected with a wire from a switch to a lamp, two input ends of a voltage transformation unit are respectively connected with the input endand the output end of the voltage dividing unit, an output end of the voltage transformation unit is connected with a control unit, the control unit is connected with a switch unit, an input end of the switch unit is connected with the input end of the voltage dividing unit, and the output end of the switch unit is connected with the output end of the voltage dividing unit; a lamp part is providedwith an electromagnetic switch, the electromagnetic switch is provided with a normally-closed switch and a drive coil, an input end of the normally-closed switch is connected with the wire from the switch to the lamp through a resistor R1, an input end of the drive coil is connected with the output end of the voltage dividing unit, the output end of the normally-closed switch, the output end of the drive coil and a second input end of the lamp are all connected with a null line at the lamp, a first input end of the lamp is connected with the wire from the switch to the lamp, the lamp cannot flicker when the lamp is turned off, shunting to take electricity via the lamp is not required.

The invention relates to a seamless switching system and a seamless switching method for ensuring normal broadcast of audio. The seamless switching system for ensuring the normal broadcast of audio comprises two video and audio broadcast servers, wherein the video and audio broadcast server comprises a video and audio I / O (Input / Output) board card, a board card drive program, a fault detecting device, an operating system and a video and audio broadcast application program; the video and audio I / O board card comprises a board card hardware buffer cache, a board card hardware register, a board card hardware control module, a signal input interface, a signal main output port and a signal spare output port. According to the seamless switching system and the seamless switching method for ensuring normal broadcast of audio, the switching is performed in video frames, the accuracy of switching frame can be accurately controlled, when in switching period, the signal is broadcasted without appearance of green screen and flickering, repeated frames or frame skipping does not appear, and thus the seamless switching of the spare broadcast signal when a fault appears is achieved.

The invention provides a light emitting diode controller, a control device and a control method. The light emitting diode controller is used with a video source and at least one light emitting diode unit. The video source generates a data signal and a vertical synchronization signal. The light emitting diode controller comprises a control signal generator and a driver. The control signal generatorperforms pulse width modulation according to a first clock signal, a second clock signal and the data signal to generate at least one control signal. The first clock signal and the second clock signal are independent of the vertical synchronization signal. The driver generates at least one driving signal according to the control signal. The drive signal is related to the light emission of the light emitting diode unit, whereby the light emitting diode unit does not flicker when the period of the vertical synchronization signal changes.