485 results about "Flicker" patented technology

The embodiment of the invention provides a display panel and a display device, the display panel comprises a substrate, a plurality of sub-pixels and a first shading layer, the sub-pixels comprise shared sub-pixels and peep-proof sub-pixels, the shared sub-pixels comprise shared light-emitting devices, and the peep-proof sub-pixels comprise peep-proof light-emitting devices; the first shading layer is located on the side, away from the substrate, of the peep-proof light-emitting device and comprises a first shading structure and an opening area; the peep-proof sub-pixel comprises a peep-proof sub-pixel A, the peep-proof sub-pixel A comprises a peep-proof light-emitting device A, the peep-proof light-emitting device A is partially overlapped with the first shading structure in the direction perpendicular to the plane where the substrate is located, and the shared light-emitting device is not overlapped with the first shading structure. According to the display panel, the small-view-angle brightness of the first peep-proof sub-pixels can be compensated, the flicker problem when the display panel switches different modes is solved, and the user experience is improved.

The invention provides an array substrate and a display device, and the array substrate comprises a substrate; the gate insulating layer is arranged on the substrate; the data line is arranged on the gate insulating layer; the first passivation layer is arranged on the gate insulation layer and covers the data line; the first shielding electrode is arranged on the first passivation layer, and the first shielding electrode is connected with the direct-current voltage signal output end; the second passivation layer is arranged on the first passivation layer and covers the first shielding electrode; the common electrode is arranged on the second passivation layer, and a part of the common electrode is overlapped with the data line and the first shielding electrode; the pixel electrode and the common electrode are arranged on the same layer or stacked, and the pixel electrode is insulated from the common electrode. The first shielding electrode is connected to the direct-current voltage signal, so that the data voltage signal on the data line does not affect the signal on the common electrode, coupling capacitance between the common electrode and the data line is avoided, and poor display of picture flicker is avoided.

The invention provides an intelligent traceless erasing method and system for video picture characters, and relates to the technical field of video stream processing, and the method comprises the steps: carrying out the space-time dual-domain feature extraction of a preprocessed first video frame sequence, and obtaining a first space-time feature; and establishing a space-time double-domain attention model according to the first space-time feature, the space-time double-domain attention model calculating fusion space domain and time domain features through cross attention, dynamically distributing fusion weights based on the character movement speed, obtaining a second video frame sequence of the to-be-processed video stream, preprocessing the second video frame sequence, and extracting a second space-time feature. Texture and motion characteristics of front and back frames are synchronously referenced through a space-time double-domain attention model, so that the time sequence coherence of a repaired area is improved, a time sequence consistency compensation mechanism driven by an SSIM is combined, the flicker frequency is reduced, and the time-space domain weight is adaptively adjusted according to the character speed through a dynamic weight distribution strategy, so that the time sequence coherence of the repaired area is improved. And stable erasing and rapid moving of characters are realized.

The embodiment of the invention provides a method and device for detecting the flicker frequency of an ambient light source and electronic equipment, relates to the field of terminals, can detect the flicker frequency of the ambient light source, and is high in detection precision and low in cost. The electronic equipment comprises a light intensity sensing module, an analog-to-digital conversion module and a data processing module, the light intensity sensing module is connected with the analog-to-digital conversion module, and the analog-to-digital conversion module is connected with the data processing module; the light intensity sensing module comprises a photodiode and is used for detecting a light intensity signal of an ambient light source and converting the light intensity signal into an analog voltage signal; the analog-to-digital conversion module is used for converting the analog voltage signal into a digital voltage signal; the analog-to-digital conversion module is an audio chip, and the audio chip is connected with a microphone and / or a loudspeaker; the data processing module is used for calculating the flicker frequency of the ambient light source according to the digital voltage signal.

The application discloses a driving method, device and equipment of a pixel circuit, relates to the technical field of display, and can solve the problems of too large amplitude of luminance difference between non-emitting and emitting stages in the picture display process, too long non-emitting time, and too strong flicker caused by non-emitting or weak emitting in part of the period. The application can flexibly and non-uniformly configure the duty cycle of the time length of each level stage in each control period, such as flexibly configuring the time length of one or more level stages for emitting light after anode reset according to whether each control period is used for anode reset, or differentiating the driving of the level stage not used for emitting light in the refresh frame period and the holding frame period based on different reset frequencies and / or different display refresh rates, so that the emitting light of the multiple control periods is uniform or the emitting duty cycle is improved to optimize the screen flicker, better display and eye protection effects are achieved under the premise that the pixel can normally emit light in each control period.

The invention discloses a PWM frequency adjusting method, electronic equipment and a readable storage medium, and belongs to the technical field of terminals, the method comprises the following steps: receiving an interface switching operation, the interface switching operation being an operation of triggering the electronic equipment to switch between a first interface and a second interface; in response to the interface switching operation, the electronic device can display an interface transition effect corresponding to the interface switching operation and adjust the PWM frequency in the process of displaying the interface transition effect, and the interface transition effect comprises at least one of a transition animation, a color gamut change effect, an interface transparency change effect and a brightness change effect. According to the method and the device, the screen flash of the display screen caused by the adjustment of the PWM frequency is covered through the interface transition effect, and the display effect of the screen is improved.

The invention provides a picture frame rate adjusting method and device of a display screen, equipment and a storage medium, and the method comprises the steps: carrying out the prediction processing of a vertical flyback window through detecting the time interval change of adjacent scanning lines in a display controller, and obtaining the prediction time of the vertical flyback window; performing atomic locking processing on the multi-stage frame buffer according to the vertical flyback window prediction time to obtain a buffer switching control signal; and performing rendering completion degree analysis processing on the GPU rendering pipeline according to the buffer switching control signal, obtaining a rendering completion degree evaluation result, reconstructing a multi-stage buffer synchronization strategy according to the rendering completion degree evaluation result, and adjusting the frame rate of the display screen based on the reconstructed synchronization strategy. By accurately predicting the vertical flyback window opportunity and implementing atomic buffer region locking, accurate synchronization of frame buffer region switching and the position of a display scanner is ensured, the problem of single-frame flicker caused by improper buffer region switching opportunity is effectively solved, and the visual continuity of professional display application is improved.

The invention discloses a brightness compensation method and device of a display panel and electronic equipment. The compensation method comprises the steps of determining a target source electrode driving circuit used for driving a target sub-pixel according to a first lookup table under the condition that a polarity flip compensation (POLC) function is started; determining the target pixel polarity of the target sub-pixel according to the second lookup table or the third lookup table; the second lookup table comprises a mapping relation between the sub-pixels in the driving boundary area and the pixel polarity; the third lookup table comprises a mapping relation between sub-pixels in a non-driving boundary area and the polarity of the pixels; and under the condition that the polarity of the sub-pixel in the driving range corresponding to the target source driving circuit needs to be overturned, adjusting a gray scale compensation value corresponding to the polarity of the target pixel, and obtaining a first target gray scale compensation value for compensating the brightness of the target sub-pixel. In this way, a flicker elimination (VDF) function and a POLC function using a variable refresh rate can be well compatible for use.

The invention discloses a visual multi-screen splicing control method for a conference room, and relates to the technical field of multi-screen splicing, and the method comprises the steps: S1, multi-source input content dynamic segmentation, S2, multi-screen state matrix construction, S3, dynamic fusion weight calculation, S4, nonlinear gradient correction, S5, distributed synchronous rendering, and S6, closed-loop feedback optimization. By analyzing feature distribution of display content in real time and combining a nonlinear gradual change correction technology, the common problems of edge bright color jumping and transition stiffness when a traditional spliced screen displays dynamic content are effectively solved, specifically, an algorithm automatically adjusts parameters of a fusion area according to content types, and the fusion efficiency is improved. Transition of colors and brightness among screens better conforms to human eye perception characteristics, the system can adjust the width of a fusion area and the gradient curve slope in a self-adaptive mode by dynamically perceiving the content movement speed and complexity, and moire and flicker phenomena are restrained while content details are reserved.

The invention discloses a depth estimation method and device for any video and a storage medium, and belongs to the field of visual depth estimation. The method comprises the following steps: carrying out annotation processing on a scene video sample to obtain a deep annotation video data set; screening based on the depth labeling video data set and the TartanAir data set to obtain a spatio-temporal joint training sample; the method comprises the following steps: performing time sequence embedding on a multi-head attention layer in an encoder of a DepthAnything model to obtain a space-time combined multi-head attention layer, and constructing an initial TC-DepthAnything model; training the initial TC-DepthAnything model by adopting a space-time joint training sample, and performing constraint by adopting an overall training loss function formed by space consistency loss and time domain regularization loss in the training process to obtain a target TC-DepthAnything model; and inputting any video into the target TC-DepthAnything model to obtain a predicted depth video. The problem of time sequence jitter of DepthAnything in video depth estimation is solved, and flicker artifacts and motion blur in a dynamic scene are inhibited. And video depth estimation with a large application range and an accurate estimation result is realized.

The invention discloses a full-color LED screen optical adjustment and intelligent energy-saving detection method, and relates to the field of LED screen adjustment and energy saving. Ambient light data is collected through a bionic distributed sensor network, and features such as illumination intensity and color temperature are extracted through PCA dimension reduction; constructing a human eye visual perception model based on the CIE chromaticity diagram, and introducing a visual adaptation factor to dynamically adjust color gamut mapping; dividing a screen dimming area, and calculating an optimal brightness value by adopting a local contrast enhancement algorithm; the RGB ratio is optimized through a genetic algorithm, and the color difference between the mixed spectrum and the target color gamut is minimized; power consumption is monitored in real time, an energy consumption prediction model is established, and an optimization strategy is triggered when a predicted value exceeds a threshold value. The color gamut coverage rate is high, the local contrast ratio is excellent, and the comprehensive energy-saving rate is greatly improved; blue light harm is reduced, screen flicker is eliminated, the visual comfort is improved, the functions of peep prevention and block chain energy consumption evidence storage are achieved, and the display quality, the energy efficiency performance and the use safety of the LED screen are comprehensively improved.

A device for image processing includes an image sensor configured to capture a first set of image frames; a buffer configured to store information indicative of luminance of each image frame of the first set of image frames; and processing circuitry configured to: retrieve, from the buffer, the information indicative of luminance of each image frame of the first set of image frames; determine a flicker correction parameter based on the luminance across each of the first set of image frames; and generate additional image frames that are for display based on the flicker correction parameter.

The invention relates to a display method, a display device and a storage medium. The display method comprises the steps of determining current display brightness of a display screen of the electronic equipment; in response to the fact that the current display brightness is smaller than a first brightness threshold value and smaller than a second brightness threshold value, the first frequency is determined as the target dimming frequency, and the first frequency is higher than a preset frequency threshold value; and setting a current dimming frequency according to the target dimming frequency, and performing screen dimming on the display screen by using a pulse width modulation (PWM) dimming mode according to the current dimming frequency. According to the invention, in the display brightness interval corresponding to PWM dimming, the interval is divided into two brightness ranges according to the preset brightness threshold value, dimming is carried out on the display screen by adopting the dimming frequency higher than the preset frequency in the PWM dimming mode in the relatively low brightness range, and the brightness of the display screen is adjusted on the premise of ensuring the endurance of the electronic equipment. Ultrahigh-frequency PWM dimming under low display brightness is achieved, the problem of low-brightness flicker is effectively solved, and display and eye protection are achieved.

The present application provides a display device, which includes a display panel, a gate driver, and an emission driver. In a first duration corresponding to a writing frame and each holding frame, a ratio of number of periods of a light-emitting control signal to a first duration is greater than a critical flicker frequency. A valid pulse of the first scan signal corresponds to an invalid pulse of the light-emitting control signal, and a valid pulse of the second scan signal is located within a duration of the invalid pulse in the first period of the light-emitting control signal corresponding to the writing frame.

The invention discloses a display visual effect optimization method and system of a display screen, and belongs to the technical field of display methods of electronic displays. The method comprises the steps of dynamic brightness gradient mapping, dynamic refresh rate cooperative adjustment and flicker suppression variable-frequency driving, an ambient light sensor is used for collecting ambient light change frequency and intensity interval data in real time, the dynamic change of ambient light can be accurately captured, a brightness adjustment area is divided, a gain coefficient is dynamically adjusted, the change of the ambient light is matched, and the flicker suppression variable-frequency driving is achieved. Smooth brightness transition, display effect and energy consumption balance, moving object feature recognition, dynamic and static region division, differential refresh rate adjustment, motion blur reduction and power consumption reduction are realized, frequent switching of region division is avoided by setting a region stability threshold and predicting a moving object track, and the accuracy of the moving object is improved. The driving signal parameters are accurately adjusted according to the picture brightness change, so that the signal frequency fluctuates randomly, the flicker rule is broken, real-time monitoring and fine adjustment are realized, and the display quality of the display screen and the user experience are comprehensively improved.

The embodiment of the invention provides an asynchronous control display method and device, equipment and a medium, and the method comprises the steps: enabling a shift clock on an editable logic chip to stop after the editable logic chip is powered on, and setting a target pin as an invalid level; in response to an event of displaying a start ready instruction sent by the processor and received by the editable logic chip, starting a shift clock, and setting the target pin as an effective level; and in response to an event of starting the ready response instruction sent by the editable logic chip received by the processor, sending the to-be-displayed data to the editable logic chip based on the processor, and displaying the to-be-displayed data. According to the technical scheme, after the data is ready, the processor sends the display start ready instruction to the editable logic chip, after the instruction is received, the pin is set to be the effective level, the start ready response instruction is returned to the processor, two-way handshake is completed, false triggering display is avoided, blurred screen and flicker are eliminated, and the system stability and reliability are improved.

Methods and apparatus for dynamic video recording alignment are provided. A video alignment system receives a first signal indicating that an interaction device comprising a screen is in use. Responsive to the first signal, the system instructs the interaction device to record a series of images displayed on the screen. The system detects flicker in a video recording generated by a camera and depicting the screen, where the video recording comprises one or more defective frames contributing to the flicker. Upon detecting the flicker, the system retrieves one or more images, from the series of images, where the one or more images are recorded by the interaction device at moments of corresponding to the flicker. The system superimposes the one or more images onto the one or more defective frames in the video recording.

The embodiment of the invention provides a dynamic scene streaming reconstruction method and device, equipment and a storage medium, and relates to the technical field of computer vision. Constructing a three-dimensional Gaussian model by using the initial video frame of each view angle, and dividing Gaussian primitives into an activity set and a frozen set based on historical video frames in the optimization process of the current video frame; determining a sudden motion mask based on the current motion mask of the current video frame, obtaining a reference rendering image corresponding to the current video frame based on the three-dimensional Gaussian model corresponding to the previous moment, and calculating a motion loss value based on the current video frame, the reference rendering image and the sudden motion mask, if the motion loss value indicates that part of Gaussian primitives in the frozen set are active primitives, dividing the active primitives into an active set; and performing an optimization process at the current moment at least based on the updated activity set. The Gaussian primitives corresponding to the dynamic region and the static region are accurately separated, the inter-frame flicker phenomenon is effectively inhibited, and the stability and the reconstruction quality of streaming reconstruction are improved.

This application describes an image processing system and method for LED Flicker Mitigation (LFM). An example method involves capturing multiple frames of a scene using an image sensor configured with various exposure settings. Based on the pixel values in the frames, the edges of a changing object may be identified in each frame, which could be a moving object or an LED source. It then determines the object's moving path between two frames captured with different exposure settings. The amount of movement of the changing object is calculated based on this moving path. The system then estimates the likelihood of the changing object being either the moving object or the LED source, based on the amount of movement. Finally, an image of the scene is generated using the captured frames by performing High Dynamic Range (HDR) fusion and LFM, taking into account the likelihood of the changing object's identity.

The invention discloses a PWM frequency adjusting method, electronic equipment and a readable storage medium, and belongs to the technical field of terminals, the method comprises the following steps: receiving an interface switching operation, the interface switching operation being an operation of triggering the electronic equipment to switch between a first interface and a second interface; in response to the interface switching operation, the electronic device can display an interface transition effect corresponding to the interface switching operation and adjust the PWM frequency in the process of displaying the interface transition effect, and the interface transition effect comprises at least one of a transition animation, a color gamut change effect, an interface transparency change effect and a brightness change effect. According to the method and the device, the screen flash of the display screen caused by the adjustment of the PWM frequency is covered through the interface transition effect, and the display effect of the screen is improved.

This application provides a display device and a backlight module driving method. When the display device is in Variable Refresh Rate (VRR) mode, the dimming mode of the backlight module can be adjusted to analog dimming mode. In analog dimming mode, the backlight brightness of the backlight module can be adjusted by adjusting the power supply voltage / current of the backlight module to ensure the normal operation of the display module. Since the analog dimming mode does not have a refresh rate, there is no phase difference. Therefore, without increasing hardware costs, screen flicker or water ripple phenomena can be avoided, thereby ensuring the display quality of the screen and improving the user's viewing experience. In addition, it can also help improve the photoelectric conversion efficiency of the components in the display device.

The invention discloses a backlight control method and device and electronic equipment, and the method comprises the steps: determining the brightness distribution of a current image frame, and determining the motion speed grade of a target object in the current image frame; comparing the motion speed grade of the target object with a preset speed grade, comparing the brightness difference value with a preset brightness difference value, and determining an output mode of the target backlight value; for the backlight partition, calculating a target brightness difference value, and determining a backlight value change duration based on the target brightness difference value, a maximum brightness threshold value, a minimum brightness threshold value and a preset weighting algorithm; and adjusting the current backlight value of the backlight partition to the target backlight value within the backlight value change duration based on the output mode. Namely, the output mode of the target backlight value is determined according to the comparison result, the problem of backlight delay is avoided, and the problem of backlight flicker is weakened by calculating the change duration of the backlight value and controlling the current backlight value to be adjusted to the change duration of the target backlight value.

This application discloses a method, apparatus, device, and storage medium for digitizing flicker pulses. The digitization method includes: presetting at least two thresholds; synchronously and in parallel comparing a flicker pulse to be processed with the at least two thresholds to determine at least two state change signals corresponding to the at least two thresholds when the flicker pulse to be processed crosses a threshold; performing delay processing on at least one of the state change signals to obtain at least two corresponding delayed state change signals; and using the same sampling module to sequentially sample the delayed state change signals to obtain the corresponding flicker pulse threshold-time pairs. This application can achieve the reuse of the sampling module while ensuring sampling accuracy, greatly saving logic resources.

The utility model belongs to the technical field of harmonic flicker testing, and particularly relates to a three-phase harmonic flicker analysis device based on testing, which comprises an outer shell, the outer shell comprises a rear shell and a front cover connected to the front end part of the rear shell, a display screen, a plurality of physical keys and a plurality of wiring jacks are embedded in the front cover, and the wiring jacks are connected with the rear shell. The rear shell is hinged with the front cover from the bottom end; the limiting mechanism comprises a limiting piece, a mounting shaft and a limiting pin, the limiting piece is rotationally connected to the front cover through the mounting shaft, a guide sliding hole is machined in the limiting piece, and the limiting pin is fixed to the end of the rear shell and penetrates through the guide sliding hole; according to the utility model, the rear shell and the front cover adopt a hinged design, the use and maintenance are convenient, the problem that the lead is easy to break due to misoperation during direct disassembly is avoided, the opening angle of the front cover is limited by using the limiting mechanism, and the safety is further improved.

The present invention belongs to the field of LED driver technology, and more particularly, relates to a method for resolving flicker caused by PWM data switching during regional backlight adjustment. The present invention divides the PWM cycle into sub-cycles, maintaining the duty cycle of each sub-cycle consistent with the original PWM data. At data switching points, the sub-cycle in which the switching occurs is completed before switching to the new PWM data. This ensures that the PWM duty cycle and refresh rate remain unchanged during this period, reducing the impact of low-frequency components in traditional methods. This significantly reduces flicker caused by low-frequency components and the problem of inconsistent brightness between chips.

Described herein are methods and systems for adjusting a camera system to account for high-lux flicker condition while maintaining camera high sensitivity capability. Automatic switching is performed from quad-Bayer binning (QBB) mode which provides for high sensitivity capability and sub-sampling mode that addresses high-lux condition. An engine, such as an auto exposure engine, performs the switching determining scene data captured by an image sensor and adjusting exposure time and gain, and instructing the image sensor to operate at QBB mode or sub-sampling mode.

The invention provides a refresh rate control method and device, a display panel and a display device. The method comprises the following steps: acquiring target display data in a current time window; judging whether multi-refresh-rate mixed display exists in the target display data or not; if multi-refresh-rate mixed display exists in the target display data, low-frequency data corresponding to a low-frequency refresh rate is determined in the target display data, and the low-frequency refresh rate is the refresh rate with the lower frequency in the refresh rates of mixed display; and performing frequency multiplication processing on the low-frequency data. When the multi-refresh-rate mixed display is detected, the low-frequency data is subjected to frequency doubling processing, so that the refresh rate of the low-frequency data is improved, the charging time difference between the low-frequency data and the high-frequency data is reduced, the brightness difference between the low-frequency data and the high-frequency data is reduced, meanwhile, the frequency doubling processing can be quickly realized, other channels do not need to be occupied, and the processing efficiency is improved. The flicker phenomenon caused by frequency hopping is quickly and effectively solved.

A device for image processing includes one or more memories configured to store image data; and processing circuitry coupled to the one or more memories, wherein the processing circuitry is configured to: determine initial camera parameters including an initial exposure time for capturing images; perturb the initial exposure time to determine at least one of a first exposure time and a second exposure time; cause an image sensor to capture a first image of the image data at the first exposure time; cause the image sensor to capture a second image of the image data at the second exposure time; determine a characteristic of flicker based on at least the first image and the second image; and generate an output based on the determined characteristic of flicker.