18 results about "Flicker-free" patented technology

A display device includes a display panel configured to display an image, and a timing controller configured to operate the pixels of the display panel at a first refresh rate and a second refresh rate. An integrated circuit detects a variation between a first frequency corresponding to a first refresh rate and a second frequency corresponding to a second refresh rate. If the frequency variation between the first frequency and the second frequency is greater than a first threshold, then a gray level of a portion of the image is determined. If the gray level of the portion of the image is less than a second threshold, then a frequency of a first frame to a greater frequency between the first frequency and the second frequency.

The application discloses a backlight erasing method and device, equipment and storage medium, relates to the display technical field, and is applied to a display device. The display device contains multiple rows of physical backlight partitions, and the method comprises the following steps: acquiring a preset lighting frequency of each row of physical backlight partitions within a frame time; dividing each row of physical backlight partitions into multiple logical rows according to the preset lighting frequency; determining the total number of logical rows that need to be lighted within the frame time according to the total number of physical backlight partitions and the preset lighting frequency; determining the reference time occupied by each logical row according to the total number of logical rows and the refresh rate of the display device; generating the on-off time sequence of the multiple rows of physical backlight partitions within the frame time based on the total number of logical rows and the reference time; and controlling the multiple rows of physical backlight partitions to perform lighting and extinguishing operations according to the on-off time sequence, so as to realize backlight erasing. The application realizes stable and flicker-free backlight erasing effect.

The present invention relates to the technical field of naked-eye 3D display, and provides a flicker-free directional backlight naked-eye 3D display device for multi-person viewing. An image control module converts image data into a 3D image, and a parallax 3D image is output to a first or Nth viewer through the cooperation of a display unit, a triangular prism-shaped microstructural directional beam-splitting film, and a directional backlight module, a quantity of viewers is determined by a human eye position signal in a display area collected by a human eye tracking module. The directional backlight module provides motion parallax, and the triangular prism-shaped microstructural directional beam-splitting film provides binocular parallax, so that the resolution is lost by only half in a horizontal direction and remains unchanged in a vertical direction, so that ultra HD 3D images can be implemented for one or more persons.

1. Name of the product of this design: All-in-one ID card reader (one‑international version). 2. The purpose of this design product: to identify vehicle information at parking lot entrances and exits, with high-definition cameras and a flicker-free LCD screen to display various information in real time. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention relates to the technical field of display, and particularly discloses a regional polarization control polarizing film based on a nanoscale gradient drawing process and a manufacturing method of the regional polarization control polarizing film. According to the polarizing film, through the innovative partition design of the transverse strips (0-degree polarization) and the vertical strips (90-degree polarization) and the assistance of 0.1-0.5 mm boundary gradual transition, the problem that in the traditional polarizing 3D technology, the image crosstalk rate is high (lt) is effectively solved; 3%), a limited visual angle (a horizontal / vertical visual angle is expanded to 60 degrees) and a pain point incompatible with a high refresh rate. The dynamic response time of the PVA layer is lt; the system supports 120Hz flicker-free display, and can be seamlessly switched among true 3D stereoscopic display, a 2D mode and AR (Augmented Reality) superposition display. The pixel utilization rate of 98% is achieved, HDR10 + wide color gamut is supported, meanwhile, the manufacturing cost is reduced by 35% compared with a traditional scheme, the method is compatible with an existing production line, and the method is suitable for AR / VR pupil tracking, 3D cinemas and multi-area dynamic backlight display equipment.

The invention discloses a method and a system for stably displaying a Base64 picture at a Web end. The server performs Base64 coding on pictures not exceeding 1MB, generates content fingerprints, associates versions with metadata, and distributes description data through homologous signatures; and the front end asynchronously loads and displays after coding and optional zooming on the canvas side, and when the loading fails, hierarchical backspacing taking the placeholder as the first is executed. The system can selectively start a fragmented list and memory water level control, combines local cache and flicker-free replacement with fingerprints and versions as keys, and supports operation rapid picture changing and history tracing. According to the scheme, the problems of cross-domain pollution, first screen blank and memory peak are solved, and the loading stability and the operation and maintenance efficiency are improved.

A display device includes a display panel configured to display an image, and a timing controller configured to operate the pixels of the display panel at a first refresh rate and a second refresh rate. An integrated circuit detects a variation between a first frequency corresponding to a first refresh rate and a second frequency corresponding to a second refresh rate. If the frequency variation between the first frequency and the second frequency is greater than a first threshold, then a gray level of a portion of the image is determined. If the gray level of the portion of the image is less than a second threshold, then a frequency of a first frame to a greater frequency between the first frequency and the second frequency.

An imaging apparatus includes a control unit configured to perform a margin-based flickerless control. The margin-based flickerless control is a control where a timing control is performed, on the basis of a period of a detected flicker component and a peak timing of the flicker component, to synchronize a specific timing within an exposure duration with the peak timing and where the timing control is not performed as long as an offset amount of the specific timing falls within a margin set as an offset allowance from the peak timing.

Embodiments of the present disclosure relate to intelligent flicker-free PWM generation for multi-channel LED drivers. This disclosure describes techniques for driving multiple light-emitting diodes (LEDs) arranged in parallel using PWM (pulse width modulation) dimming. The disclosed techniques describe the generation and application of a fixed phase shift mapping to a driver matrix based on pixel position. Each pixel corresponds to an LED light source. In the fixed phase shift mapping, each pixel will have a predefined phase shift calculated to cause a determined change in the on-time of geometrically adjacent pixels to spread the current demand over time during PWM dimming.

The invention provides a video stream-oriented infrared and visible light image adaptive registration method, and belongs to the technical field of electric digital data processing. The invention discloses a video stream-oriented infrared and visible light image adaptive registration method, which comprises the following steps of: firstly, constructing a scale adaptive infrared and visible light static image registration network, and extracting multi-scale image features for scale prediction and transformation parameter estimation by using a pre-trained weight ResNet101; a two-stage training mode is designed, and registration is performed after scale, so that interference of registration training on scale estimation is prevented. Aiming at the problem of lack of a multi-modal registration data set, modal migration and synthetic transformation are performed on a visible light data set, the visible light data set is divided into a training set and a test set, and a static image registration network is trained. And finally, designing a frame association registration strategy, eliminating inter-frame hopping, and outputting a flicker-free continuous video. The method solves the problems that in the infrared and visible light image registration process, it is difficult to deal with too large scale difference of different modes, and video hopping is caused when a static registration method is directly applied to video streams, and has good universality and practicability.

This invention discloses a pixel-level constant current driving, ion migration monitoring, and bias protection system, belonging to the field of LED display driving and panel reliability technology. Addressing issues such as uneven pixel current, image quality degradation due to ion migration, pixel failure, and bias protection flickering in traditional Mini LED displays, this invention adopts a four-layer hierarchical architecture, integrating independent pixel-level constant current driving units. It relies on a three-parameter fusion monitoring and temperature compensation mechanism (temperature, pressure, and current) to quantify pixel aging status through the ion migration index. This invention combines adaptive current compensation and inter-frame synchronous reverse bias protection algorithms to achieve lossless image quality and flicker-free aging management. This invention offers high control precision, enabling real-time monitoring, compensation, and delay of pixel aging, significantly improving display uniformity and screen lifespan. Its modular design provides strong scalability, adapting to various high-end Mini LED display applications.

In one embodiment, a display system includes circuitry to, after an exit from a self-refresh state, obtain first frame data with a first refresh rate and second frame data with a second refresh rate different than the first refresh rate, and based on the second refresh rate being greater than the first refresh rate, determine an amount of drift between timing controller circuitry of a graphics controller and timing controller circuitry of a display panel, and based on the amount of drift being above a threshold value, cause the first frame data to not be displayed and cause the second frame data to be displayed at the first refresh rate.

A digital display apparatus comprises a controller and a digital pixel panel. The pixels of the digital pixel panel are divided into a first group of pixels and a second group of pixels. The controller is configured to operate the first group of pixels at a first flicker-free refresh frequency F1 and to operate the second group of pixels at a second flicker-free refresh frequency F2>F1. When the graphic content displayed on the digital pixel panel is viewed by a subject, an invisible visual simulation at a harmonic frequency (HF) equal to |2F1−F2| is induced endogenously in a brain of the subject. By properly choosing F1 and F2, and subsequently HF, the digital display apparatus offers the benefits of preventing or improving Alzheimer's disease or memory recall.

To enable appropriate cancellation of flicker countermeasure processing when a photographic environment changes to an environment without a flicker after the start of the flicker countermeasure processing.SOLUTION: An imaging controller acquires a photographing direction, and on the basis of the photographing direction, sets a control mode to one of a first control mode for performing predetermined flicker countermeasure processing and a second control mode for not performing the flicker countermeasure processing.SELECTED DRAWING: Figure 1

To provide an imaging apparatus capable of notifying a user of a photographing method in which flickerless photographing is effective, a method of controlling the same, and a program.SOLUTION: A digital camera 100 detects light source information of a light source at the time of imaging from an image signal obtained by imaging an object by an imaging element 103, and when the light source at the time of imaging is a flicker light source, selects a reduction processing means effective for reducing the influence of the flicker light source from three reduction processing means on the basis of the detected light source information, and notifies a user of the selected reduction processing means.SELECTED DRAWING: Figure 3

This application discloses an ambient light synchronization method, apparatus, and device based on video content color analysis, comprising: obtaining the current video frame and its display timestamp from the video stream; downsampling the video frame; generating a pixel weight mask for eliminating interference areas based on the downsampled video frame; extracting candidate primary colors of the downsampled video frame based on the downsampled video frame, the pixel weight mask, and a preset spatial weight matrix; performing temporal filtering and perceptual mapping on the candidate primary colors to obtain the luminaire-driven color; generating and sending an ambient light synchronization command to at least one target luminaire based on the luminaire-driven color and its target effective time, to instruct the target luminaire to synchronize its emission state to the luminaire-driven color at the target effective time. This application can achieve lightweight computation, interference-resistant primary color extraction, smooth flicker-free operation, color gamut adaptation, and precise time-series alignment for video-linked ambient light synchronization.

A flicker-free thyristor light-adjusting linear constant current circuit is provided, which includes a rectification and constant current module and an illumination module. The illumination module is internally provided with a ripple elimination module, which includes a ripple suppressor U4, a ripple suppressor U5, a capacitor C1, and a capacitor C2. The ripple elimination module is electrically connected to the illumination module. The ripple suppressor connected to the negative pole of the LED array in this present disclosure can suppress the ripple coefficient of the pre-driver, and filter out the ripple by setting a capacitor, so that the LED array will not flicker when emitting light.