9 results about "Flicker-free" patented technology

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.

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.

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 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.