72 results about "Screen tearing" patented technology

The invention provides a cloud game picture processing method and device, electronic equipment and a storage medium, and relates to the technical field of image processing, and the cloud game picture processing method comprises the steps that a client sends a display refresh rate to a server; the server determines a rendering frame rate of the server based on the display refresh rate; the server renders and encodes the cloud game picture data based on the rendering frame rate of the server to generate encoded data and transmits the encoded data to the client; the client receives the coded data and decodes and renders the coded data to obtain decoded data, and the rendering frame rate of the decoded data is smaller than or equal to the refresh rate of the display; and the client adjusts the refresh rate of the display to be consistent with the rendering frame rate of the decoded data. According to the method, the rendering frame rate of the server side is adjusted according to the display refresh rate of the client side, and an effective upward redundant space is provided for the frame rate of data transmission, so that the picture tearing problem in the cloud game is effectively eliminated by adjusting the display refresh rate.

The invention relates to the technical field of video decoding, in particular to a self-adaptive video low-delay hard decoding display system, which identifies a video stream format and a switching state through a self-adaptive demultiplexing module, extracts naked stream data and judges a decoding mode; the dynamic decoder allocation module dynamically allocates decoding resources according to the mode information, and supports concurrent decoding of a whole-frame single decoder or N-fragment multi-decoders; and the frame synchronization and VCXO dynamic adjustment module outputs a latest complete frame in a whole frame mode, aligns and recombines fragmentation data according to a frame number in an N fragmentation mode, and dynamically adjusts a VCXO clock frequency based on a decoding and display time difference. According to the invention, multi-format compatibility, seamless switching of video streams and ultra-low delay display are supported, and black fields, static frames and picture tearing are effectively avoided.

This application provides an encoding, encapsulation, and display method, apparatus, and electronic device. The encoding method includes: acquiring an image to be encoded; then, determining the encoding scale N (N is an integer greater than 1) for the image, and determining the encoding parameters corresponding to each of the N encoding scales, resulting in N sets of encoding parameters. Subsequently, based on the N sets of encoding parameters, the image is encoded N times using a pre-set single-scale encoder to obtain N sets of bitstream data. In this way, encoding the image yields bitstream data with a smaller data volume (i.e., low-encoding-scale bitstream data), thus increasing the probability of the image bitstream data reaching the decoding end during network fluctuations, thereby ensuring smooth video playback. For high-encoding-scale bitstream data, if lost, it will not affect normal decoding and playback at the playback end, and will not cause screen tearing; if it reaches the decoding end, it can also improve the playback quality.

The invention discloses a synchronous display method of AR split glasses and the AR split glasses. The AR split glasses comprise glasses, a control box and a data line. The data line is used for connecting the glasses and the control box. The method is applied to the control box. The method comprises the following steps: detecting that the glasses are connected with the control box through a data line under the condition that the glasses are disconnected from the control box; receiving a plurality of synchronization signals periodically sent by the glasses; calculating a first time difference between a first time when the glasses send the first synchronization signal and a second time when the control box receives the first synchronization signal; the synchronization signal is any one of a plurality of synchronization signals; the first time difference is a time difference corresponding to the first synchronization signal; optimizing the first time difference by using a setting algorithm, and adjusting the first time by using the optimized first time difference to obtain target time; and sending the image frame corresponding to the target time to the glasses, so that the glasses display the image frame. The picture tearing problem is avoided, and picture synchronous display is achieved.

The invention discloses electronic equipment and a display card frame rate and display screen refresh rate matching adjustment method thereof. The method comprises the following steps: when a graphics card receives a rendering task, extracting a picture complexity parameter of the rendering task and a current hardware parameter of the graphics card; inputting the picture complexity parameter of the rendering task and the current hardware parameter of the display card into a rendering time prediction model, so as to output the predicted rendering time of the rendering task through the rendering time prediction model, and transmitting the preset rendering time to a display screen; the display screen is controlled to adjust the refresh rate of the display screen according to the predicted rendering time, so that the refresh rate of the display screen is matched with the output frame rate of the display card. The prediction rendering time obtained according to the fusion rendering time prediction model and fusion of the picture complexity parameters and the current hardware parameters of the graphics card is high in accuracy, and the problems of picture tearing, jamming and delayed response caused by mismatching of the output frame rate of the graphics card and the refresh rate of a display screen can be effectively solved.

The invention provides a video monitoring frame insertion method and device, computer equipment and a storage medium, and belongs to the field of video monitoring frame insertion, and the method comprises the steps: extracting a plurality of key frames in a historical video; the method comprises the following steps: replacing the attention WA of a window in a SwinCS module of a Transform network with a cross-scale window attention mechanism CSWA, forming a multi-frame synthesis module Multi-SynBlock through kernel estimation, mask estimation, offset estimation, deviation estimation and a deformable convolution module, and forming a multi-scale pin model through the improved Transform network and the Multi-SynBlock network; a key frame in a historical video is used as input, a multi-scale pin model is trained, and an intermediate frame at any time position is generated. According to the frame insertion algorithm, the frame rate of coal mine video monitoring can be effectively improved, motion blur and picture tearing are reduced, clearer and smoother monitoring pictures are provided, and the efficiency and response speed of coal mine safety management are improved under the conditions of low cost and no increase of operation load.

The embodiment of the invention discloses a rendering picture screen recording method, head-mounted display equipment, a readable medium and a product. A specific embodiment of the method comprises the steps of obtaining pose information, a target to-be-rendered picture frame and shared texture data of the head-mounted display device; determining distortion correction information of the target to-be-rendered picture frame according to the pose information; in response to the detection that the historical augmented reality screen recording video shakes, performing time dimension smoothing processing on the pose information to obtain smoothed pose information; and according to the distortion correction information, the post-smoothing pose information and the shared texture data, performing overall picture rendering on the target to-be-rendered picture frame to obtain a rendered picture frame, so that the server performs screen recording processing on the historical augmented reality screen recording video and the rendered picture frame to obtain an augmented reality screen recording video. According to the embodiment, the problems of picture tearing and snowflake points of the recorded video can be avoided, the time delay of video recording is further reduced, and the problem of video picture jitter during recording is avoided.

The invention discloses a method and a system for outputting PGM and PVW signals through seamless switching of 24 paths of 12G-SDI ultra-high-definition videos, relates to the technical field of video production, and discloses a method and a system for outputting PGM and PVW signals through seamless switching of 24 paths of 12G-SDI ultra-high-definition videos. 24 paths of 12G-SDI video signals are subjected to grouping selection processing, the video format is unified, and a double-cache structure and a time synchronization mechanism are adopted, so that the problems of signal processing bottleneck and clock difference under a high-bandwidth condition are effectively solved; the problems of picture tearing and switching delay caused by high-bandwidth processing and signal clock difference in seamless switching of 24 paths of 12G-SDI video signals are solved, and low-delay and high-reliability PGM and PVW signal output is realized.

A display panel (PNL) and a display device. The display panel (PNL) comprises at least two sub-panels (SPNL) sequentially tiled in a column direction; any sub-panel (SPNL) comprises sub-pixels (PIX) distributed in an array and scan lines (GL) in one-to-one correspondence to sub-pixel rows; and the sub-panel (SPNL) is provided with a plurality of gate drive circuits (GOA) for driving the scan lines (GL), wherein among two adjacent sub-panels (SPNL), the timing of a start signal of the gate drive circuit (GOA) electrically connected to the last row of scan line (GL) of the preceding sub-panel (SPNL) is the same as the timing of a start signal of the gate drive circuit (GOA) electrically connected to the first row of scan line (GL) of the subsequent sub-panel (SPNL). The problem of screen tearing of the tiled display panels (PNL) can be solved.

The utility model discloses a vibrating screen tearing detection device which comprises a vibrating assembly, a load adjusting assembly is arranged at the top of the vibrating assembly, the vibrating assembly comprises a base, a vibrating disc is movably connected above the base, four ear hooks are fixedly installed on the outer walls of the left side and the right side of the base and the vibrating disc, and the number of the ear hooks is four. The device comprises a vibration disc, a vibration screen is detachably and fixedly installed on the top of the vibration disc, a load adjusting assembly comprises a U-shaped frame, through holes are evenly formed in the outer wall of the top of the U-shaped frame, and a supporting plate is fixedly installed on the outer wall of the top of the U-shaped frame. The second servo motor is used for controlling the balancing weights with different masses to load the top of the vibrating screen according to test requirements, so that the vibration working condition of the vibrating screen can be simulated conveniently, the fatigue resistance and tear resistance of the vibrating screen can be detected conveniently, and the working efficiency of detection is improved.

The invention discloses a display device and a control method and equipment thereof, and relates to the field of display, and the method comprises the steps: obtaining a current target refresh rate of the display device, and determining a first transmission rate of a time sequence signal output by a time sequence controller in the display device under a set horizontal total pixel number based on the target refresh rate; acquiring a second transmission rate at which a power management module in the display device outputs a gate driving signal; and under the condition that the first transmission rate is not equal to the second transmission rate, adjusting the number of horizontal total pixels in the time schedule controller so as to adjust the first transmission rate, and enabling the adjusted first transmission rate to approach the second transmission rate. The technical problem of serious picture tearing is solved.

The present application relates to the technical field of image processing. Provided are a cloud game picture processing method and apparatus, and an electronic device and a storage medium. The method comprises: a client sending a display refresh rate to a server; on the basis of the display refresh rate, the server determining a rendering frame rate of the server; on the basis of the rendering frame rate of the server, the server performing rendering and encoding processing on cloud game picture data, so as to generate encoded data and transmit same to the client; the client receiving the encoded data and performing decoding and rendering processing on the encoded data to obtain decoded data, wherein a rendering frame rate of the decoded data is less than or equal to the display refresh rate; and the client adjusting the display refresh rate to be consistent with the rendering frame rate of the decoded data. By adjusting the rendering frame rate of the server on the basis of the display refresh rate of the client, the present application provides an effective upward redundancy space for a frame rate of data transmission, thereby effectively eliminating the problem of picture tearing in a cloud game by adjusting the display refresh rate.

Embodiments of the present application provide a wireless screen projection method and device, which relate to the field of communications and can reduce screen tearing, freezes, and image quality degradation in wireless screen projection, thereby improving user experience. The wireless screen projection method, applied to a Wi-Fi communication system, includes: an electronic device transmitting a layered video coding segment of a first video frame to a display device in a first video transmission cycle; obtaining channel state information of the first video frame transmitted from the display device; and selectively initiating a retry mechanism based on the channel state information, wherein the retry mechanism is: transmitting the first layered video coding segment of the second video frame to the display device in a first time segment in a second video transmission cycle, and transmitting the discarded portion of the first layered video coding segment in the first time segment to the display device in at least one other time segment after the first time segment.

The invention relates to the technical field of liquid crystal display screen control, in particular to a liquid crystal display screen display control method and system and a liquid crystal display screen. The method comprises the following steps: acquiring to-be-displayed image data in a current display stage, and constructing a display content evolution sequence according to the display frame type and pixel feature difference of each frame of image; based on the display content evolution sequence, determining the display load characterization quantity of the current display stage; determining a driving time sequence interval under each display load level according to display driving parameters of the liquid crystal display screen; calling a corresponding driving time sequence interval according to the display load characterization quantity to generate a driving time sequence constraint condition so as to control the row and column scanning process of the liquid crystal display screen; and comparing the actual display time sequence obtained in real time with the driving time sequence constraint condition, and synchronously correcting the driving time sequence in the display stage according to a comparison result. According to the invention, the stability and continuity of picture display are improved, and the phenomena of display delay, picture tearing and uneven brightness are reduced.

The present invention relates to a method for improving depth conflict in three-dimensional scene rendering, comprising: initializing and setting the target observation point position of a camera, initially setting the point density range for rendering scene sampling and the time interval for triggering calculations, obtaining a screen pixel sampling point list based on the point density range, and pre-providing a preset rendering object picking candidate set; based on the screen pixel sampling point list and the rendering object picking candidate set, dynamically adjusting the camera's near plane value in combination with the rendering scene at the time interval for triggering calculations, completing the calculation of the dynamically set camera's near plane value, and automatically and dynamically adjusting the adaptive value according to the rendering scene to improve screen tearing caused by rendering depth conflict. The present invention also relates to a system, medium, and device for improving depth conflict in three-dimensional scene rendering.

The invention belongs to the technical field of cross-screen display, and particularly discloses a cross-screen synchronization method, device, equipment and system based on distributed computing, and the method comprises the steps: receiving video data corresponding to a frame of target picture, the video data comprising to-be-decoded picture data corresponding to the target picture and a timestamp used for marking the to-be-decoded picture data; based on the timestamps, judging whether the to-be-decoded picture data received by different decoding devices correspond to the same frame or not; if corresponding to the same frame, decoding the to-be-decoded picture data of the device to obtain to-be-pushed screen display data; judging whether the to-be-pushed screen display data held by different decoding devices correspond to the same frame or not; and if so, determining local picture display data corresponding to the device based on the to-be-pushed screen display data, and pushing the local picture display data to the corresponding spliced screen. According to the method and the device, through two-time judgment, display picture synchronization between different spliced screens can be realized, and a picture tearing feeling caused by display picture asynchronization is avoided.

This invention provides a method and system for low-latency video stream synchronization transmission for ultra-high-definition displays, relating to the field of video transmission and display technology. The method includes: at the i-th moment of an adjustment period, setting configuration parameters according to the configuration parameter adjustment model at the (i-1)-th moment; acquiring CPU utilization, network utilization, input response activity, real-time synchronization error data, synchronization jitter data, and screen tearing ratio; determining a first dynamic weight, a second dynamic weight, and a third dynamic weight; determining the low-latency video stream transmission synchronization coefficient; determining whether the configuration parameter adjustment model at the (i-1)-th moment needs training; if the configuration parameter adjustment model at the (i-1)-th moment needs training, determining the training loss function of the configuration parameter adjustment model at the (i-1)-th moment to obtain the configuration parameter adjustment model at the i-th moment; and obtaining the configuration parameters at the (i+1)-th moment. According to this invention, the synchronization level of low-latency video stream transmission can be improved.

The invention provides a frame loss processing method and device for a panoramic camera video and a storage medium, and relates to the technical field of video processing. According to the method, the frame loss mode is identified by acquiring the first video collected by the panoramic camera and traversing the timestamps of all the video frames, and the videos are processed in a targeted manner based on the preset frame loss processing strategy, so that the video frames of multiple lenses can be correctly aligned, the synchronism of the video of multiple lenses is ensured, and the user experience is improved. The video stitching fluency, the audio and video synchronization accuracy and the anti-shake processing stability are guaranteed, so that normal recording and high-quality output of the panoramic video are guaranteed, the problems of picture tearing, unnatural transition, audio and video asynchronization, poor anti-shake effect and the like are avoided, and the watching experience of a user is improved.

The invention provides a video generation method and device and electronic equipment, and the method comprises the steps: obtaining a panoramic browsing animation obtained by carrying out the panoramic shooting of a target space based on a space point position browsing strategy, and enabling the space point position browsing strategy to indicate an observation point moving path, an optimal rotation angle corresponding to the shooting of an observation point, and a shooting field angle; carrying out animation rendering on the panoramic browsing animation on an adaptive panoramic canvas, and carrying out frame picture extraction in the panoramic canvas; synthesizing the extracted batch frame pictures into a video at a target frame rate, and obtaining a playing video corresponding to the target frame rate; the playing video is played on the playing device with the device refresh rate matched with the target frame rate. According to the invention, shooting is carried out according to the preset planning path and shooting is carried out at each observation point according to the specified mode, so that the shooting quality can be ensured while the shooting efficiency is improved; and the video with the specified frame rate is synthesized and played on the adaptive equipment, so that picture tearing and flickering can be avoided, and the fluency of the video picture is ensured.

The invention is suitable for the technical field of display, and provides a compensation method and device of a display panel and a display screen. The display panel comprises a frame buffer. The frame buffer comprises a first storage area used for storing current frame data and a second storage area used for storing previous complete frame data of the current frame data. The compensation method of the display panel comprises the following steps: acquiring a phase difference between an input end synchronizing signal and a display panel synchronizing signal; based on the phase difference, entering a frame compensation mode under the condition of determining that the output frame rate of the graphic processing unit is not synchronous with the fixed refresh rate of the display panel; in the frame compensation mode, stopping writing the current frame data into the first storage area; and circularly outputting the previous complete frame data to the display panel from the second storage area at the first refresh rate, so as to compensate the condition that the front-end input frame rate is different from the refresh rate of the display panel, and improve the problem of picture tearing caused by asynchronization of the input frame rate and the refresh rate of the display panel in a high-frame-rate display process.

The invention discloses a high-synchronism display double-screen driving system, which relates to the technical field of display double-screen driving, and comprises a main control unit module, a double-path display controller module, a synchronous control logic module, a frame buffer system module, a signal transmission link module and a power supply and time sequence management module, the main control unit is used for generating a time sequence reference, managing frame cache data and distributing a synchronization signal; the two-way display controller module is used for being connected with the main control unit module. According to the high-synchronism display double-screen driving system, through clock homologous phase locking, phase dynamic calibration, transmission delay compensation and other core technologies, the double-screen synchronization error is controlled to be within the clock phase difference, and compared with a traditional double-screen driving system that the synchronization error is usually larger than or equal to 30 degrees, the synchronization precision is improved by one order of magnitude; and the problems of cross-screen tearing, flickering and frame dislocation can be effectively eliminated.

The application discloses a synchronous display method of AR split glasses and the AR split glasses. The AR split glasses comprise glasses, a control box and a data line. The data line is used for connecting the glasses and the control box. The method is applied to the control box. The method comprises the following steps: detecting that the glasses are connected with the control box through the data line in the case that the glasses are disconnected with the control box; receiving a plurality of synchronization signals periodically sent from the glasses; calculating a first time difference between a first time at which the glasses send a first synchronization signal and a second time at which the control box receives the first synchronization signal; the synchronization signal is any one of the plurality of synchronization signals; the first time difference is a time difference corresponding to the first synchronization signal; applying a set algorithm to optimize the first time difference, and adjusting the first time by using the optimized first time difference to obtain a target time; and sending an image frame corresponding to the target time to the glasses, so that the glasses display the image frame. The picture tearing problem is avoided, and the picture synchronous display is realized.

The present application belongs to the technical field of terminals. Disclosed are a refresh rate switching method, and an electronic device, a chip system and a readable storage medium. The method comprises: running a first application program at a first moment; a display screen displaying, at a first refresh rate, image data corresponding to the first application program, and an application processor transmitting image data to the display screen for a first transmission duration; at a second moment, the application processor sending a refresh rate switching instruction to the display screen; at a third moment, the application processor transmitting image data to the display screen for a second transmission duration, wherein the second transmission duration is shorter than or equal to the first transmission duration; at a fourth moment, the display screen displaying the image data at a second refresh rate, wherein the second refresh rate is lower than the first refresh rate; and at a fifth moment, the application processor transmitting image data to the display screen for a third transmission duration, wherein the third transmission duration is longer than the second transmission duration. In this way, the problem of screen tearing occurring during the switching of a screen refresh rate can be solved.

This application provides a display device, a mobile terminal, and a method for adjusting resolution based on signal strength. The method involves obtaining the Internet Protocol address (IPA) of the mobile terminal and detecting the network latency value between the mobile terminal and the IPA using the IPA and a first query command. If the network latency value is greater than a network latency threshold, a signal quality alert is generated and sent to the mobile terminal, causing the mobile terminal to send media data to the display device according to the alert. If the network latency value is less than or equal to the network latency threshold, the current network signal strength value is detected, and a target resolution is determined based on the signal strength value. This target resolution is then sent to the mobile terminal, enabling the mobile terminal to send media data to the display device according to the target resolution. This application dynamically adjusts the resolution of transmitted media data based on network conditions, selecting a resolution that matches the signal strength value, thus avoiding stuttering and screen tearing, and improving the user experience.

The invention provides a picture frame rate synchronous control method and system for multiple projection devices, and belongs to the technical field of projection control, the precise adaptation of initial parameters of each device is ensured based on an automatic threshold calibration mechanism of historical data and performance parameters, and the performance waste or picture lagging caused by traditional fixed parameters is avoided; a multi-level threshold value section and a priority dynamic allocation strategy are combined with task requirements and equipment capacity, the picture quality of core equipment can be preferentially guaranteed in a complex scene, and meanwhile, the availability of edge equipment is considered through a gradient allocation strategy; the real-time deviation monitoring and closed-loop calibration technology effectively eliminates frame rate / code rate drift caused by hardware difference, network jitter or load fluctuation among multiple devices, so that a synchronization error is always within a preset threshold value, and the probability of occurrence of problems such as picture tearing and delay in a large-scale projection array is remarkably reduced.

The invention discloses an AMOLED display screen tearing immediate signal testing method and system. The AMOLED display screen tearing immediate signal testing system comprises a testing mainboard and a to-be-tested AMOLED display screen module. The test control unit is used for sending a driving signal to the display control unit to drive and lighten the AMOLED display screen, and the tearing signal module sends a tearing signal pulse to the test control unit through the tearing signal pin; the test control unit calculates the period of the tear-to-go signal pulse to obtain the tear-to-go signal period; and calculating the tearing-in-place signal frequency of the tearing-in-place signal pulse by utilizing the tearing-in-place signal period, and if the tearing-in-place signal frequency is within a specified frequency range and is not less than a specified number, judging that the tearing-in-place signal module is normal. The automatic judgment of the tearing signal is realized, and the problem that the production and manufacturing cost of a factory is increased due to the consumption of a large amount of manpower and material resources is solved.

The present invention relates to the field of frame rate control technology, specifically to a method and system for synchronously controlling the frame rate of a multi-projection device, comprising the following steps: based on the network data of a differentiated projection device, the network data includes network bandwidth, packet loss rate and delay, a network quality score is calculated, and according to the fluctuation of the network bandwidth, packet loss rate and delay of the projection device, a network stability score is calculated to obtain network status information. The present invention, by calculating the network quality and stability score, can identify the device with the worst network status indicator, and adjust its frame rate and bit rate, and synchronously adjust the video stream frame rate and bit rate of the differentiated projection device, thereby preventing screen tearing and frame skipping caused by differences in network conditions, and adjusting the bit rate by calculating and applying the degree of deviation of the network status indicator, thereby optimizing the image quality of the projection, and improving the overall quality and viewing experience of multi-screen video playback.

The invention discloses a video synchronization method, a distributed system and a computer program product, and the method comprises the steps: taking the time of a master device as a time reference, and synchronizing local clocks, vertical synchronization signal phases and play starting time of a first video frame of all slave devices based on a PTP protocol; when the video frame decoding of any device is abnormal, sending a notification of deleting the video frame of the corresponding display time sequence to all other devices in the distributed system; and all devices in the distributed system cyclically and dynamically adjust the picture updating rate based on an accumulator until the picture updating rate is aligned with the display refresh rate, ending the cycle, and displaying the decoded video frames according to the video frame display time sequence. The method and the device are used for solving the problem that display between a master device and a slave device is asynchronous or a picture is torn due to the fact that a timestamp is influenced by a network signal and a timer is influenced by an operation time error.

The application relates to the technical field of display screens and discloses a multi-window display method and device of a display screen, electronic equipment and a storage medium, the method comprising the following steps: based on the original resolution of four video signals and target window sizes, performing scaling processing on first pixels of each video signal and writing the first pixels into corresponding layer buffer areas; based on starting offsets of four quadrants, performing global coordinate remapping on second pixels in each layer buffer area and writing the second pixels into a global frame buffer area; locking and aligning a collection clock of the four video signals by using a display screen VSYNC signal, pushing frame data in the global frame buffer area to a driving IC, and driving a pixel matrix to complete four-window on-screen output; and the application solves the technical problems of picture stretching, cutting distortion and picture tearing caused by resolution differences of the video signals in the prior art, and guarantees the complete and synchronous output of four-window pictures in a single VSYNC cycle.

The invention relates to a three-dimensional virtual simulation stereoscopic rendering video generation method and device, equipment and a medium, and aims to adapt to the eye distance or scene depth of a user by dynamically adjusting the distance between a left virtual camera assembly and a right virtual camera assembly, so that the visual comfort of a stereoscopic video is remarkably improved. And meanwhile, a high-precision picture synchronization technology is adopted, so that the picture time sequence consistency of the left and right virtual camera assemblies is ensured, the picture tearing and delay phenomena are avoided, and the immersion feeling is improved. Through path smooth interpolation and real-time adjustment technologies, a continuous and smooth camera motion track is generated, and creation flexibility is enhanced. In addition, the application of the parallax perception compression algorithm optimizes the code rate and the image quality of the video file, so that the video generation efficiency is higher and the file size is smaller. The introduction of the visual editing panel supports the user to adjust and preview the camera spacing, the mirror moving track and the compression parameters in real time, avoids frequent re-rendering, and significantly improves the working efficiency.