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 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 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 after the output unit generates the light-emitting control signal. 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 discloses a water pipe water leakage monitoring method and belongs to the technical field of detection. The water pipe water leakage monitoring method adopts a water pipe water leakage monitoring device and specifically comprises the steps that a flow detection module transmits a flow signal to a nuclear control module; a threshold value compared with the flow signal corresponding to the flow detection module is set in the nuclear control module; when the flow signal value detected by the flow control module in a specific time is larger than and / or equal to the corresponding threshold value, water pipe water leakage is judged; and at this time, the nuclear control module conducts voice broadcast through an alarm module, conducts image display through a display module and meanwhile drives a water flow controller to be closed through a drive module. By adoption of the water pipe water leakage monitoring method, the problems that existing water pipe water leakage monitoring methods are low in detection precision, high in mounting cost and prone to causing signal attenuation and interference can be solved.

The embodiment of the invention discloses a dimming method, an adjuster and a dimming system. The dimming method comprises the following steps: detecting the conducting situation of a main switch of a dimming switch; controlling a first current source and a second current source according to the conducting situation of the main switch, wherein when the main switch is conducted, judging whether the load voltage is less than a preset voltage value or not; if the load voltage is less than the preset voltage value, switching on the first current source; if the load voltage is not less than the preset voltage value, switching off the first current source and the second current source; when the main switch is switched off, switching on the first current source or the second current source, wherein the first current source and the second current source are in parallel connection, the first current source outputs a constant current, and the second current source outputs a variable current. The dimming method, the adjuster and the dimming system can increase the dimming range, reduce power consumption, and can guarantee flicker-free or shimmering loading under the circumstance of switching off the dimming switch.

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.

The invention discloses an anti-interference system and method applied to a medical display. The system comprises a decoding unit, a video time sequence detection unit connected with the decoding unit, an interference determination unit connected with the decoding unit and the video time sequence detection unit, a first video time delay unit connected with the interference determination unit, anda synchronization signal regeneration unit connected with the decoding unit and the video time sequence detection unit; a second video time delay unit connected with the synchronous signal regeneration unit, a video gating unit connected with the interference judgment unit, the first video time delay unit and the second video time delay unit, a medical image processing unit connected with the video gating unit, a coding unit connected with the medical image processing unit, and a display unit connected with the coding unit. The invention has the advantages that when the synchronization signalis interfered, a synchronization signal regeneration function is equipped, so that the image content cannot be displaced, an image cannot flicker, and the damaged image content can be correctly displayed to the greatest extent.

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 invention discloses a backlight module for a display panel. The backlight module comprises a diffuser, at least one light tube and a single-side light-emitting diode (LED) light source, wherein the at least one light tube is provided with a patterned surface in the diffuser; and the single-side LED light source is attached to each terminal of the diffuser. When a plurality of light tubes are used, the light tubes are connected together by a double-side LED light source. The patterned surfaces of the light tubes are diffused or reflected by rays emitted by the LED light source to provide rays with uniform brightness and intensity. The light tubes are covered by an organic dye molecule doped visible light transparent material of a thin layer. The organic dye has strong ultraviolet light absorption characteristic. By changing the doping concentration of the dye molecules, a coating can become fully opaque or semitransparent for certain wavelengths, and obtains selective wavelength conversion. The mode can change or control color, brightness and intensity of the rays.

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.

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 provides an LED driver. Different filter sub-circuits are allocated for various types of output signals, so that the output signals are filtered respectively. In this way, the device selecting and the parameter presetting for each filter sub-circuit can be conducted in the more targeted manner. Compared with a conventional LED driver provided with a single filter circuit in the prior art, the above LED driver is better in filtering effect on the premise that the factors of cost, size and service life are given consideration to at the same time. Therefore, the current for LED loads is kept constant. Meanwhile, the flicking / damaged condition of LED loads caused by the intermittent operation of a high-frequency switching power supply or the influence of dynamic pulse signals can be avoided.

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 present invention relates to a method and / or apparatus for improving the visual perception of images displayed on a liquid crystal (LCD) panel, said method comprising the step of generating an adjustment of the rear light of said panel according to a target power value (PT) signal (PE, i+1), and the control signal (CE, i+1) of the image contrast is generated according to the adjustment signal (PE, i+1) of the rear light, so that when the effective The contrast of the displayed image is increased / decreased when the adjustment signal (PE,i+1) is decreased / increased.

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 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 a half-wave voltage regulator for a motorcycle magneto. The half-wave voltage regulator comprises an AC side half-wave rectification circuit converting an alternating current generated by a magneto into a negative semi-cycle pulsating direct current, an AC side control circuit controlling an output voltage of the AC side half-wave rectification circuit according to an output voltage of the magneto and a voltage of a headlight of a motorcycle, a DC side half-wave rectification circuit, and a DC side control circuit, wherein the AC side control circuit comprises an AC side synchronization circuit generating a sine wave with same frequency and same phase as the output voltage of the magneto, an AC side sawtooth wave forming circuit generating a first sawtooth wave voltage with same frequency and same phase as a sine wave negative half cycle, an AC side sampling amplification circuit generating a first reference voltage, and an AC side controlled trigger circuit generating a first square wave voltage. In the half-wave voltage regulator for the motorcycle magneto, the voltage of headlight of the motorcycle and the magneto negative half-cycle voltage have the samefrequency and phase, and the AC side motorcycle headlight and the DC side load are controlled independently and are not interfered with each other.

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 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 discloses a light emitting diode drive unit capable of modulating light and inhibiting scintillation, comprising a rectification unit, an integration sampling unit and a voltage-current control conversion unit. An AC power supply providing apparatus transmits an AC power supply to a light modulator; the light modulator adjusts light of the AC power supply to obtain a light modulation power supply; the light modulator transmits the light modulation power supply to a rectification unit; the rectification unit rectifies the light modulation power supply to obtain a rectification power supply. The rectification unit transmits the rectification power supply to the integration sampling unit and a light emitting diode; the integration sampling unit performs integration sampling conversion on the rectification power supply to obtain an integration voltage signal, and transmits the integration voltage signal to the voltage-current control conversion unit; the voltage-current control conversion unit converts the integration voltage signal to obtain a driving current signal to drive the light emitting diode. The light emitting diode drive unit can inhibit light emitting diode scintillation.

The invention provides an exercise rehabilitation instrument for a neurology department, and belongs to the technical field of medical auxiliary instruments. The exercise rehabilitation instrument for the neurology department comprises a top plate, the left side and the right side of the top plate are connected with mounting mechanisms through adjusting mechanisms, two hand pressure sensors, knee pressure sensors and foot pressure sensors are sequentially arranged on the top plate from back to front, the bottom of the top plate is connected with a semicircular plate through a connecting plate, the semicircular plate is provided with a head pressure sensor, and the head pressure sensor, the two hand pressure sensors, the knee pressure sensors and the foot pressure sensors are fixed to the semicircular plate and the top plate through sensor shells. The whole device is reasonable in structural arrangement, ingenious in conception and flexible to use, and the exercise rehabilitation instrument is good in rehabilitation training effect for neurology patients, suitable for use requirements of different patients due to more training parts of the patients, simple to assemble and disassemble on a patient bed board, and high in practicability.

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.

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.