46 results about "Screen tearing" patented technology

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 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 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.

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.

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.

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 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 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 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.

The invention provides an image processing method and device, equipment, a medium and a product, and aims to greatly reduce the delay of a display picture by using a single buffer mechanism, facilitate system deployment with high picture delay sensitivity, such as virtual reality fusion and the like, and effectively relieve the dizziness of a user when the user wears the image. Moreover, compared with a double-buffering system and a three-buffering system, the cost is reduced, and cost reduction and efficiency improvement in a lightweight virtual reality fusion system are facilitated. Besides, the display unit is partitioned according to the screen scanning direction, read-write conflicts are avoided by controlling the read-write time sequence of each partition, and the problem of read-write rate difference under a single buffer mechanism is greatly relieved, so that the problem of picture tearing is effectively solved, and low delay and picture display fluency are both considered.

The present application provides a screen generation method and apparatus. The method comprises: acquiring a resource release time interval; on the basis of the resource release time interval, periodically releasing resources in a resource pool, the resources being used for generating a screen; and when a screen generation request is received, using target resources released from the resource pool to generate a target screen requested to be generated by the screen generation request. According to the method, screen stuttering can be prevented or reduced while preventing screen tearing.

The invention relates to the technical field of projection screens, and provides a resistance detection and stop control device and method for a projection screen, and the device is characterized in that a detection module integrated with an attitude sensor and a wireless signal transmitter is arranged in an end region of a screen guide rail, and is independently powered by a power supply; the posture change of the guide rail in the lifting process can be sensed in real time, when it is detected that abnormal inclination exceeds a preset threshold value, a resistance meeting signal is generated in time and sent to the driving control unit in a wireless mode, automatic stopping or reverse rotation of the motor is achieved, curtain tearing, guide rail deformation and motor overload are effectively avoided, and the safety of the curtain is improved. The running safety and reliability of the projection screen are improved; the electric projection screen is compact in structure and convenient to install, external wiring is not needed, and the problems that an existing electric projection screen lacks an automatic stopping function when encountering resistance, and consequently equipment damage and safety risks are caused are solved.

The present application provides a display method and apparatus, for controlling the display of a display screen. The display screen comprises a first area and a second area, wherein the refresh rate of the first area is less than the refresh rate of the second area. The method comprises: acquiring N consecutive refresh start moments in the first area, wherein among the N refresh start moments, a time interval between two adjacent refresh start moments is one first refresh period, the N refresh start moments correspond to N-1 first refresh periods, at least two first refresh periods among the N-1 first refresh periods are different, and N is greater than or equal to 3; and at each refresh start moment among the N refresh start moments, controlling the first area and the second area to be refreshed simultaneously. The display method provided in the present application can reduce display problems such as screen tearing and stuttering.

The invention discloses a financial management system for sports economic analysis, and relates to the technical field of financial management, and the system comprises three modules: a data collection module obtains a user network signal and equipment image data in real time and marks an ID; the preprocessing module preprocesses the marked data; and the central calculation processing module calculates and standardizes to obtain a picture tearing model, analyzes whether the picture is torn or not, predicts severity if the picture is torn, analyzes financial income increase, returns the picture to the acquisition module after adjustment through a scheduling algorithm, and ends analysis if the picture is not torn. According to the method, the prediction type picture tearing model is constructed by fusing network signals and image contour analysis, abnormity is detected in real time, user behaviors are pre-judged, a dynamic advertisement scheduling algorithm is combined, problem users are intelligently shielded, and normal users are switched, so that the advertisement putting efficiency and the financial revenue stability are remarkably improved, and the playing amount and the duration are effectively prevented from sliding down.

This invention relates to a video image processing method, disclosing an efficient multi-focus shooting method. The method includes determining whether the similarity of a first cropping frame, a second cropping frame, and a third cropping frame exceeds a first preset threshold; if it does, the grid density is increased. It also determines whether the similarity is less than a second preset threshold; if it is, the framing delay of a fourth viewfinder is increased. During the increased framing delay, a fixed object in the third viewfinder is identified, and its position remains unchanged in the fourth viewfinder. This invention actively increases the delay of the fourth viewfinder, briefly anchoring it. A large pre-focusing area is exposed in front of the direction of movement. This allows the system to perform "predictive focusing" on objects about to enter the frame, greatly improving focusing speed and accuracy in motion. Combined with the transition of the framing delay, it completely eliminates image tearing and mechanical abrupt changes under complex camera movements, achieving cinematic-level smooth image stabilization.

This invention discloses a system for synchronous control of MiniLED display driving signals, relating to the field of display driving control technology. This invention can calculate stable setup time data and generate pre-start time data based on effective light-emitting window data and setup characteristic data of each display partition, enabling different display partitions to be established and released synchronously. Simultaneously, it maintains an optically silent state during the setup phase and outputs compensating light-emitting data to display partitions that fail to complete setup on time. This effectively reduces problems such as dark lines, flickering, regional brightness misalignment, and image tearing in virtual shooting, improving the synchronous display accuracy, image continuity, and engineering applicability of MiniLED display walls.

The invention relates to an image processing method and device, equipment, a storage medium and a program product, and relates to the technical field of computers. The method comprises the following steps: receiving a screen capture instruction, wherein the screen capture instruction is used for triggering capture of an image output to display equipment for display; in response to the fact that the first image is output from the first storage space to the display device for display, blocking the second image from being output from the first storage space to the display device; the second image is the next frame image of the first image; copying the first image from the first storage space to a second storage space; the second storage space is used for storing an image which is triggered and captured by the screen capturing instruction; and in response to completion of copying of the first image, canceling blocking of outputting the second image from the first storage space to the display device. According to the method and the device, task interference between sending and displaying a next frame and copying a previous frame is avoided, abnormity such as picture tearing and data disorder caused by the task interference is reduced, and smooth completion of a screen capturing and copying task is ensured.

The invention relates to the field of video image processing, and discloses a video rendering method for virtual reality equipment and electronic equipment. According to the method and the device, the hardware decoding mode or the software decoding mode is dynamically selected to decode the current video frame according to the hardware running state in the video playing process; video frame data obtained after decoding are transmitted to a video memory of a graphics processor in a zero-copy mode; and in the rendering output process, viewport cutting is performed on the video frame data based on the view angle of the current user. Therefore, by monitoring the hardware state in real time and dynamically adapting the decoding strategy, resource occupation of decoding and rendering is balanced; through a zero-copy transmission mechanism, the memory bandwidth bottleneck is eliminated; through a viewport cutting technology, an invalid rendering area outside a visual field is eliminated. On the premise that a video packaging format is not changed, the problems of lagging, heating and picture tearing when an ultra-high-definition panoramic video is played on virtual reality equipment can be effectively solved.

The invention provides a picture generation method and device. The method comprises the following steps: acquiring a resource release time interval; periodically releasing the resources in the resource pool based on the resource release time interval; wherein the resources are used for generating pictures; and when a picture generation request is received, generating a target picture requested to be generated by the picture generation request by using the target resource released from the resource pool. According to the method, picture lagging can be avoided or reduced while picture tearing is avoided.

The application discloses a frame rendering optimization method and device, electronic equipment and a readable storage medium, and relates to the technical field of graphic processing. The method calculates the predicted rendering time and the predicted rendering completion time of the next frame through a prediction algorithm; generates a virtual display rhythm sequence based on an actual refresh rate, calibrates an ideal frame period in combination with a clock drift offset, and generates an expected display time according to the calibrated frame period; pairs the expected display time with the predicted rendering completion time, and generates a time matching table; generates an optimal matching scheme of the candidate frame and the expected display time based on a weighted cost parameter in the time matching table; and reconstructs the out-of-order sequence of the rendering queue according to the optimal matching scheme, and performs layered processing on the output frame of the reconstructed rendering sequence in the display period. The method can effectively improve the fluency and stability of picture output, and reduce picture tearing and freezing phenomena through optimization of the frame rendering process.

The invention provides a rendering video motion coherence assessment method and system based on a point tracking technology, and the method comprises the steps: carrying out the preprocessing of an input video, and interactively constructing an initial tracking point set in the preprocessed input video; performing inter-frame tracking on the initial tracking point set by adopting a point tracking technology to obtain a tracking point position set taking a frame as a unit; and performing smoothness analysis on the track of the tracking point position set, calculating a smoothness index of the track of the tracking point, and obtaining a motion coherence evaluation index of the video. According to the method, the video quality is evaluated from the aspect of motion coherence, the method is designed for the types of lagging, picture tearing and the like which are easy to occur in the rendered video, and context information lacked in a traditional optical flow method is overcome by utilizing a trajectory curve constructed by a point tracking technology; the obtained video motion coherence index is helpful for judging the quality of a rendered picture and guiding a user to generate a video with coherence in motion, so that the setting of the rendered picture on different platforms is optimized.

The invention relates to an asynchronous rendering method and system based on dynamic region dependence, belongs to the technical field of image processing, and solves the problems of blurred screen and lagging of remote desktop images caused by an improper asynchronous processing time sequence or a strict sequential processing mechanism in the prior art. Comprising the following steps: receiving a screen updating data packet, creating a rendering task, carrying out asynchronous decoding on non-empty original image data to obtain decoded image data, and updating the rendering task; establishing a dependency relationship between a new rendering task and an existing rendering task, and if the dependency relationship meets a rendering condition, updating a task state and then putting the task into a ready rendering queue; rendering tasks are taken out from the ready rendering queue at regular time, and effective tasks are obtained through target area coverage detection; and merging and drawing the decoded image data of each effective task on an off-screen canvas, generating a frame of image, copying the frame of image on the screen canvas, and updating the task state and the ready rendering queue of each effective task. Smooth and stable remote desktop image rendering is realized.