39results about How to "Avoid flickering" patented technology

The invention relates to the technical field of image processing, and discloses a display method and system for a vehicle-mounted LED display screen. The method comprises the following steps: acquiring ambient light intensity data, performing fusion processing to obtain a characteristic value, and predicting ambient light change; identifying a driving scene according to the road condition data, and analyzing the priority by combining the ambient light change data; arranging a display area in combination with the eye movement data, and determining display parameters; analyzing the multi-modal interaction data, determining an interaction strategy, and verifying to generate response data; adjusting display content according to the ambient light features, and outputting a display effect in combination with response data; and energy consumption is estimated by integrating various data, and control parameters are generated to adjust an LED driving circuit. Through intelligent analysis and processing of multi-dimensional data such as ambient light intensity, driving scene and eye movement tracking, dynamic optimization and energy-saving control of display content are realized, and the problem that display effect and energy efficiency are difficult to consider in the prior art is overcome.

This invention relates to the field of mobile device camera testing technology, and discloses an Android dynamic adaptive screen camera testing system, including a light sensing module, an algorithm module, a parametric template system, a distortion compensation engine, and a differential rendering module. The light sensing module collects ambient absolute illuminance data; the algorithm module calculates the ambient illuminance gradient and controls the system state flow; the parametric template system reconstructs basic texture parameters based on the gradient to generate a two-dimensional texture of the test pattern; the distortion compensation engine constructs a non-uniform three-dimensional geometric mesh model based on the screen curvature radius and performs spatial distortion calculations on the vertices of the two-dimensional texture; the differential rendering module obtains a feature mask image, performs shading resource reallocation calculations, and sends a timing synchronization trigger command to the camera under test after rendering is completed. This invention can reduce the impact of sudden changes in external ambient light on the pattern display quality and compensate for the geometric deformation at the edges of curved screens.

The present application belongs to the technical field of complex illumination scene adaptive control, and particularly relates to a night vision strong light suppression imaging method for highway scenes. The method completes scene preliminary judgment through illumination statistical feature extraction, identifies strong light regions and extracts connected domain features, assigns differentiated suppression intensity factors based on light source types, automatically switches imaging modes, combines local exposure suppression, halo weakening, night vision enhancement, and infrared light supplementing with exposure closed-loop control, and realizes precise suppression of strong light glare, dark detail improvement, and dynamic stability of image brightness. The present application solves the problems of insufficient low-illumination imaging, difficulty in suppressing strong light, and unstable fixed parameters in the prior art, and is suitable for complex illumination scenes at night on highways, ensuring clear key information such as vehicle outlines and license plates, and meeting the needs of night safety monitoring and vehicle detection.

The present application provides a driving circuit, a driving method and a display panel, wherein the driving circuit includes a driving transistor, a first light-emitting control module, a second light-emitting control module, a light-emitting device and a writing module. The use of the driving circuit can avoid the continuous writing of data signals in a low-frequency state causing the voltage of the first electrode of the driving transistor to change, thereby causing the voltage difference between the first electrode and the gate of the driving transistor to change, causing the threshold voltage of the driving transistor to drift, and thus causing the display panel to flicker.

The present specification discloses a method for adjusting the brightness of a vehicle-mounted screen, a vehicle-mounted device and a vehicle, the method comprising: continuously receiving a logical brightness value; each time the logical brightness value undergoes an abnormal jump, reconstructing the brightness interval based on the abnormal jump brightness value and starting a timer to reset the timing range; wherein the abnormal jump refers to the logical brightness value jumping out of the corresponding brightness interval within the corresponding timing range; within the retiming range, detecting whether the number of logical brightness values ​​in the re-divided brightness interval meets a preset number requirement, and if so, using the first logical brightness value in the re-divided brightness interval to modify the brightness of the vehicle-mounted screen.

The present disclosure relates to the field of computer technology, and specifically to a view display method, a view display device, a computer-readable storage medium, and an electronic device, wherein the method comprises: in response to an opening instruction for a first live broadcast room, requesting first information from a live broadcast service end, and displaying a first type of view in the first live broadcast room according to the first information; when requesting the first information from the live broadcast service end, displaying a second type of view in the first live broadcast room according to second information cached in a terminal device; requesting second target information from the live broadcast service end, continuing to display the second type of view in the first live broadcast room or displaying a target second type of view corresponding to the second target information; wherein the view types of the first type of view and the second type of view are different. Through the technical solution of the embodiment of the present disclosure, the problem of long time consumption when loading different types of views in the related technology can be solved.

Disclosed is a display device including a light emitting element; and a pixel driving circuit connected to the light emitting element and configured to include a first node, a second node, a third node, and a fourth node, wherein the pixel driving circuit includes a driving transistor connected to the first node, the second node, and the third node, a plurality of switching transistors, a storage capacitor, and a plurality of signal lines and a plurality of voltage lines, wherein an initialization voltage applied through an initialization line among the plurality of signal lines and the plurality of voltage lines varies based on a data voltage.

The utility model provides a special vehicle display screen anti-screen flash protection circuit and a power management system, the special vehicle display screen anti-screen flash protection circuit comprises a microcontroller module and an enabling protection module, and the enabling protection module is composed of a signal control switch tube and an isolation diode. The anode of the isolating diode is connected with the display screen enable signal output end of the microcontroller, and the cathode is connected with the control end of the switching tube; the first end of the switch tube is connected with a vehicle-mounted display screen driving signal output end, and the second end is grounded. When a special vehicle is ignited and started, the circuit forcibly pulls down a display screen driving signal to a low level through the switching tube, so that the display screen enters a transient closing state, and power supply is recovered after a power supply system is stable, thereby avoiding the impact of voltage transient on a display module, preventing the vehicle-mounted display screen from flickering, and prolonging the service life of the display screen. And the running stability and durability of the display screen of the special vehicle are further improved.

The invention provides a pixel driving circuit, an array substrate, a display device and electronic equipment. The pixel driving circuit comprises a driving module and a write-in module, the write-in module is electrically connected with a data line and a first node. The driving module is electrically connected with the first node, a power line and a light-emitting device. The write-in module is used for writing a target level signal of the data line into the first node during a data write-in stage; and the driving module is used for outputting a driving current matched with the target level signal during a light emitting stage so as to drive the light emitting device to emit light. According to the embodiment of the invention, the driving module does not participate in the work of the data write-in stage, so that the switching device of the driving module can have enough recovery time in the reset stage and the data write-in stage, and the problem of flicker or color cast caused by voltage threshold deviation of the switching device in the driving module when high-frequency driving display is converted to low-frequency driving display is avoided; and the display quality is improved.

The invention discloses a control method and device for a color temperature breathing light supplement lamp, and belongs to the technical field of illumination control. The method comprises the steps that a color temperature control curve is generated according to a preset periodic function, the color temperature control curve represents the change relation of the color temperature proportion along with time, and the color temperature proportion is the proportion of the cold light quantity in the total light quantity; periodically updating a color temperature proportion value corresponding to the current moment according to the color temperature control curve; respectively calculating driving parameters of the cold light emitting unit and the warm light emitting unit according to the color temperature proportion value; and controlling the output of the cold light emitting unit and the warm light emitting unit according to the driving parameters, so that the output color temperature of the light supplementing lamp is periodically and cyclically changed within a preset color temperature range. Breathing control and color temperature control are combined, alternate, continuous and cyclic change of color temperature is achieved, and the playing method of the light supplementing lamp is enriched.

The present application discloses a backlight driving method and a liquid crystal display device. The backlight driving method first determines the total luminous flux value of each display partition based on video data and a light intensity coefficient table, then determines the total luminous flux value of each backlight partition according to the total luminous flux value of each display partition, then calculates the light intensity of each lamp bead based on the total luminous flux value of the backlight partition, and then determines the driving parameters of each lamp bead according to the light intensity of each lamp bead, thereby meeting the luminous flux requirements of a moving object at different positions, reducing or avoiding the brightness difference between the moving object at different positions, and thereby improving or avoiding the flickering phenomenon of the moving object.

The invention relates to a lamp dimming control system and a method for automatically judging a dimming range of a lamp, and the method comprises the following steps: (A) in a dimming detection period, gradually reducing the periodic average voltage of a driving signal output to a light-emitting part; and (B) during the dimming detection period, recording critical dimming information of the current of the light-emitting part corresponding to the condition that the light-emitting part begins to flicker or be turned off. And (C) reducing a dimming range according to the critical dimming information to obtain dimming lower limit information corresponding to the condition before the light-emitting part begins to flicker or is turned off. And (D) in a normal operation period, outputting the driving signal which is not lower than the dimming range corresponding to the dimming lower limit information. Therefore, the dimming lower limit information of each light-emitting part can be automatically detected, the condition that the light-emitting parts flicker or are extinguished in the dimming process can be avoided, and the maximum dimming range of each light-emitting part can be fully utilized.

The invention relates to the technical field of intelligent control of LED lamps, in particular to an intelligent control method and system of an LED illuminating lamp, and the method comprises the steps: capturing a PWM signal on a driving circuit of the LED illuminating lamp through a microcontroller with a timer input capturing function in the process of regulating and controlling the brightness of the LED illuminating lamp, calculating the PWM frequency and PWM duty ratio at each moment, and adjusting the brightness of the LED illuminating lamp according to the PWM frequency and PWM duty ratio; digital voltage values of the LED illuminating lamp at all moments are obtained; calculating adjustment smoothness, an average correlation factor, a lag influence degree and an adjustment feedback deviation value; obtaining an adjusted proportionality coefficient in the PID control algorithm; and the duty ratio of the PWM is adjusted, so that the brightness of the LED illuminating lamp is adjusted. The brightness adjustment of the LED illuminating lamp can be smoother, more accurate and more stable, the brightness of the LED illuminating lamp can be accurately controlled, and the overall illuminating effect and the user experience are improved.

This application provides a driving circuit for driving a load. The input terminal of the input adjustment circuit receives the input voltage, and the output terminal of the input adjustment circuit is grounded. The input terminal of the high power factor module and the first input terminal of the anti-flicker module are connected to the input terminal of the input adjustment circuit. The first terminal of the load is connected to the output terminal of the high power factor module, the second terminal of the load is connected to the second input terminal of the anti-flicker module, and the output terminal of the anti-flicker module is connected to the output terminal of the input adjustment circuit. This application can automatically switch its operating state according to the dimming angle. When the dimming angle is greater than a first predetermined value or when dimming is not performed, the high power factor module adjusts the input current of the input adjustment circuit into a multi-segment current to reduce total harmonic distortion and improve power factor and efficiency. When the dimming angle is less than or equal to the first predetermined value, the anti-flicker module adjusts the output current of the anti-flicker module to prevent the LED beads from flickering.

The application provides a dimming method, a dimming control device and a light source system, comprising: when the light source system is enabled and the dimming control device is powered on for the first time, setting a conduction angle to a maximum value and gradually reducing the maximum value; detecting brightness information of the light source; obtaining a flicker frequency of the light source according to the brightness information of the light source and comparing the flicker frequency with a preset reference flicker frequency; when the flicker frequency is less than or equal to the reference flicker frequency for the first time, setting the conduction angle at this time to a lower limit of the conduction angle. The dimming method, the dimming control device and the light source system can adaptively set the lower limit of the conduction angle according to the reference flicker frequency, adaptively limit the lower limit of the dimming brightness, avoid low-frequency flicker of the light source at a low dimming brightness, evade flicker of the light source at a low brightness while ensuring the dimming range of the light source system, and improve the practicability of the light source system.

The embodiment of the invention discloses a scene reconstruction method and device, equipment and a storage medium, and the method comprises the steps: carrying out the scene reconstruction through a preset scene reconstruction mode if a current moment is a first three-dimensional scene relative to a target scene, and obtaining a current three-dimensional scene; otherwise, acquiring a plurality of first image frames and second image frames formed by acquiring the target scene at different visual angles, and acquiring a previous three-dimensional scene reconstructed based on the target scene; according to the first image frames and the second image frames, performing pose adjustment on Gaussian points in the previous three-dimensional scene to obtain a deformed three-dimensional scene; performing Gaussian point addition and deletion and Gaussian point feature optimization processing on the deformed three-dimensional scene according to each second image frame to obtain a processed optimized three-dimensional scene; and determining the optimized three-dimensional scene as a current three-dimensional scene at the current moment. According to the method, the current three-dimensional scene with higher relevance with the previous three-dimensional scene can be obtained in the time domain, so that the smoothness and continuity from the previous three-dimensional scene to the current three-dimensional scene in the time domain are ensured.

A frequency detector (120) detects a system frequency (f) from an AC voltage on an AC power line (20) to which a power conditioner (30) performing system interconnection of a distributed power supply (40) is connected. A power converter (110) is configured to inject lead reactive power or delay reactive power (Qc) into the AC power line (20). A controller (150) controls reactive power (Qc) output from the power converter (110) so as to output the delay reactive power in response to an increase in the system frequency (f) while outputting the lead reactive power in response to a decrease in the system frequency (f).

The utility model relates to the technical field of electronic equipment interfaces, and discloses a DVI-24 + 1 pin connector with a hot plug function. Comprising a connector body, fixing screws are connected to the inner walls of the two sides of the connector body in a penetrating and threaded mode, an electrical interface end is fixedly connected to the end of the connector body, an auxiliary protection mechanism is arranged outside the electrical interface end, and the auxiliary protection mechanism is used for protecting the electrical interface end in a non-plugging state. The auxiliary protection mechanism comprises a protection cover arranged outside the electrical interface end in a sleeving mode, the opening end of the side, close to the fixing screws, of the protection cover is fixedly connected with a fixing frame, the side wall of the end, located at the electrical interface end, of the connector body is fixedly connected with a supporting plate, and the top of the supporting plate is symmetrically and fixedly connected with two supporting feet. According to the utility model, the protective cover is utilized to play a dustproof and waterproof role in the idle period of the electrical interface end, and meanwhile, when the electrical interface end accidentally falls to the ground, the protective cover can play a buffering role.

The invention provides a display device. The display device comprises a display panel and a driving circuit. The driving circuit comprises a current value calculation circuit which is electrically connected with the signal input end; the gain calculation circuit is electrically connected with the current value calculation circuit; the difference calculation circuit is electrically connected with the gain calculation circuit; the gain delay circuit is electrically connected with the difference calculation circuit; the gain limit calculation circuit is electrically connected with the current value calculation circuit; the judgment circuit is electrically connected with the gain delay circuit and the gain limit calculation circuit; and the multiplication circuit is used for carrying out multiplication on the input first gray scale data and the first gain value output by the judgment circuit and outputting second gray scale data. The difference value of the gain values is calculated through the difference calculation circuit, the gain delay circuit carries out delay calculation processing on the difference value, the gain limit calculation circuit limits the change range of the gain values, and a feedback signal control mode is adopted, so that the flicker phenomenon of a display picture is effectively improved.

The utility model discloses a vehicle tail LOGO switch control system circuit. The vehicle tail LOGO switch control system circuit comprises a first power supply input processing module, a first driving module, a first load module, a second power supply input processing module, a second driving module and a second load module, the input end of the first power supply input processing module is connected with the power supply end of a left power supply of a vehicle body, the output end of the first power supply input processing module is connected with the input end of the first driving module, and the output end of the first driving module is connected with the first load module; the input end of the second power input processing module is connected with the right power supply end of the vehicle body, the output end of the second power input processing module is connected with the input end of the second driving module, and the output end of the second driving module is connected with the second load module. The utility model provides a vehicle tail LOGO switch control system circuit which is lower in energy consumption, high in overall working efficiency, safer in circuit operation and good in heat dissipation and stability.

The invention discloses a self-adaptive clustering method for unmanned aerial vehicle-mounted 4D radar point clouds, and belongs to the field of radar signal processing. The method comprises the steps of obtaining an original point cloud of an unmanned aerial vehicle 4D radar, and performing motion compensation and dynamic ROI filtering preprocessing; dBSCAN parameter self-adaption is driven through a radar physical model, the neighborhood radius and the minimum core point number are dynamically adjusted, and coarse clustering is carried out on point clouds; setting a clustering quality evaluation standard, calculating a spatial covariance matrix, a point cloud number and geometric distribution characteristics of a coarse clustering cluster, and screening out a to-be-refined cluster with an under-segmentation risk; after a to-be-refined cluster is screened, a heterogeneous graph model fusing space, speed and intensity features is constructed, and an RCS condition gating strategy is adopted; and carrying out recursive cutting by utilizing spectral clustering. According to the method, the problems of over-segmentation and under-segmentation caused by sparse point clouds along with distances and target RCS flicker are effectively solved, and the target sensing precision and robustness of the unmanned aerial vehicle in a complex scene are improved.

The invention relates to the field of vehicle image processing, and particularly discloses an automatic driving obstacle detection method and system based on image recognition, and the method comprises the steps: detecting and segmenting a local degradation region in an original image, and generating a precise mask; restoring the region based on the inverse process of a physical degradation model, and fusing to generate a global restoration image; evaluating the credibility of the repair area, generating a repair credibility map to modulate the depth features, and obtaining an anti-repair artifact attention feature map; detecting the feature maps of the current frame and the historical frame through a time sequence collaborative attention mechanism, and outputting a stable obstacle list; the system comprises four modules with corresponding functions. According to the method, a repair credibility evaluation and feature purification mechanism is introduced, and time sequence consistency verification is combined, so that the deep problem that local repair artifacts interfere with detection is systematically solved, and the accuracy and robustness of obstacle detection under severe conditions of rain, snow, mud and the like are remarkably improved.

The embodiment of the invention provides a brightness compensation method and device of a display panel, display equipment and a storage medium. The method comprises the following steps: determining a refresh frequency of a first display subarea in a plurality of display subareas of the display panel; the first display subarea is the display subarea with the highest frequency in the plurality of display subareas; according to the refresh frequency of the first display partition, a compensation parameter for compensating a control voltage of a pixel circuit in the display panel is determined, and the control voltage is used for controlling a switch unit of the pixel circuit to be conducted; and according to the compensation parameter, at least adjusting the control voltage of the pixel circuit in the second display subarea in the plurality of display subareas.

The present disclosure provides a video processing method, device, medium and electronic equipment, relating to the field of video processing, the method comprising: performing matting processing on a first target video by a video matting model to obtain a first foreground video and a first background video; the video matting model being trained according to at least a second target video output by a video synthesis model, the video synthesis model performing feature extraction on target video frames of the same moment in a second foreground video and a second background video to obtain first video frame features, and obtaining second video frame features corresponding to historical video frames of the same moment in the second foreground video and the second background video; and synthesizing the second foreground video and the second background video according to the first video frame features and the second video frame features to obtain the second target video. The video synthesis result of the present disclosure is more realistic, and thus the video matting model is trained based on the video synthesis result, so that the accuracy and efficiency of the video matting model are higher.

A display device and a method for driving a display panel of the display device are disclosed, and the display device includes a display panel, a gate driver, a data driver and a drive controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to the display panel. The data driver outputs a data voltage to the display panel. The drive controller selectively determines the drive mode of the display device between a normal drive mode and a low-frequency drive mode, and determines the drive frequency of the display panel based on the input image data. The drive controller includes: a flicker value storage unit that stores a plurality of flicker values ​​for a plurality of gray values ​​of the input image data; and a data remapper that converts the gray values ​​of the input image data to reduce the size of the maximum frequency gray region corresponding to the maximum drive frequency in the low-frequency drive mode.

A display device is disclosed. The display device includes: a display panel; and a panel driver configured to drive the display panel. In an active period of the frame period, the panel driver generates a data voltage based on the gamma voltage, supplies the data voltage to the plurality of pixels through the plurality of data lines, and supplies a scan signal having a gate-on voltage to the plurality of pixels through the plurality of scan lines. In a blanking period of the frame period, the panel driver outputs a black data voltage to the plurality of data lines and outputs a gate off voltage to the plurality of scan lines. In a display-off period, the panel driver outputs a gamma voltage to the plurality of data lines, outputs a gate-off voltage to the plurality of scan lines, and adjusts at least one of the gamma voltage and the gate-off voltage.

The invention relates to a gate driver and an electronic device having the same. The gate driver includes: an input circuit for transmitting an input signal to a first control node in response to a first clock signal; a pull-up circuit for pulling up the gate output signal to a high voltage in response to a signal of a second control node; a pull-down circuit for pulling down the gate output signal to a first low voltage in response to a signal of a third control node; a node separation circuit including a control electrode for receiving a high voltage, a first electrode connected to a first control node, and a second electrode connected to a second control node; a first control node control circuit for controlling a signal of the first control node in response to a signal of a third control node; and a third control node control circuit for controlling a signal of a third control node in response to a signal of the first control node.

The invention provides a wide-view-angle light field holographic display method based on time division multiplexing. The space and angle resolution information of a light field is dispersed into different time frames, and the information amount of the space and the angle is increased by increasing the frame rate, so that a wider visual angle and a higher resolution are realized. The method comprises the following steps: firstly, acquiring a light field image, and acquiring target light field information by using a light field camera or a computer modeling method as an image source of holographic coding; secondly, information in different angle directions in the light field is coded through the holographic coding technology; dimensionality reduction sparsification is carried out on the light field to avoid frequency spectrum aliasing of the light field holograms at different angles, so that the corresponding light field holograms are generated; and finally, loading the generated light field holograms of the corresponding viewpoints on a spatial light modulator in sequence, switching the holograms in different angle directions through a high frame rate, and realizing time division multiplexing wide-view-angle light field reconstruction by utilizing a persistence of vision effect of human eyes.

The invention relates to a pixel circuit, a display panel and a driving method of the pixel circuit. The pixel circuit comprises a driving transistor, a threshold compensation module, a first reset module and a compensation module. The first end of the compensation module is connected with a target node, the second end of the compensation module is used for receiving a target signal, the target node comprises at least one of an intermediate node of the threshold compensation module and an intermediate node of the first reset module, and the target signal comprises a first target signal and a second target signal; the potential of the first target signal received by the second end of the compensation module in the blanking stage is higher than the potential of the second target signal received by the second end of the compensation module in the holding stage, and the pixel circuit can improve the display performance of the display panel.

The invention discloses a liquid crystal display panel and a display device, which are characterized in that a second electrode of a thin film transistor further comprises a first part, and the first part is at least partially overlapped with the orthographic projection of a grid line on a first substrate, so that parasitic capacitance formed between a grid electrode and the second electrode is equivalently compensated; under the condition of counterpoint fluctuation in the technological process, for example, a film layer where a grid electrode is located is equivalent to the overall left part under the ideal counterpoint condition, so that the overlapping capacitance between a third part of a left thin film transistor electrically connected with the same data line and the grid electrode is increased, and the overlapping capacitance between a first part and the grid electrode is decreased; the overlapping capacitance between the third part of the right thin film transistor electrically connected with the data line and the grid electrode is reduced, and the overlapping capacitance between the first part and the grid electrode is increased; the added first part can ensure that the Cgs of each sub-pixel on the left side and the right side of the same data line are roughly the same, the uniformity of Flickers is improved, and the problem of flicker of a display surface is avoided.