785 results about "Refresh rate" patented technology

The invention provides an immersive concert experience system based on virtual reality, and belongs to the technical field of virtual reality, and the system comprises a dynamic adjustment module which is used for predicting the preference of a user for stage arrangement, light effects and music types through a machine learning model according to the historical preference data of the user, and outputting the preference to the stage arrangement, light effects and music types; dynamically adjusting visual elements and sound field parameters of the virtual scene and a refresh rate and a field angle of the virtual scene in combination with the user physiological indexes and the user head motion trail which are acquired in real time; the action capture and feedback module is used for capturing an interaction instruction sent to the dynamically adjusted virtual scene by the limb action of the user in real time; and the interaction feedback module is used for enabling the virtual performer to respond to the interaction instruction of the user in real time based on the expression recognition and voice synthesis technology, and generating personalized interaction feedback content. A user constructs an immersive music interaction field domain, and experience logic of a virtual music meeting is completely reconstructed.

The invention discloses a display panel and a driving method thereof, the display panel comprises a plurality of first switches and a plurality of second switches, N columns of pixels are arranged in a first display area, and M columns of pixels are arranged in a second display area; the first scanning line is connected with N columns of pixels in the first display area and M columns of pixels in the second display area, the second scanning line is connected with the N columns of pixels in the first display area, and each first switch is connected with two data lines corresponding to sub-pixels with the same color in the first display area and the second display area; each second switch is connected with a data driving chip and a data line corresponding to a pixel in the first display area; wherein N and M are natural numbers greater than or equal to 2. The two data lines corresponding to the sub-pixels with the same color in the first display area and the second display area respectively receive the same data signal or different data signals to realize display in different display modes by switching on or switching off the first switch and the second switch, so that insufficient charging under a high refresh rate is improved.

The invention discloses a cholesteric liquid crystal display driving method and a cholesteric liquid crystal display driving device for realizing dynamic video display, and belongs to the technical field of display. The method comprises the following steps: firstly, controlling a grid electrode and a source electrode driver to cooperatively work, and resetting a full-screen liquid crystal to a vertical arrangement state as a display reference; then applying a specific voltage signal to each pixel according to the current frame image data, so that the pixels are selectively kept in a vertical arrangement state or converted into a plane arrangement state to display a target image; then common electrode voltage polarity inversion is carried out, reverse voltage is applied for compensation, and finally the process is cycled to achieve image updating. The corresponding device comprises a display panel, a gate driver, a source driver and a time schedule controller for executing the method. According to the method and device, the refresh rate limitation of traditional cholesteric liquid crystal bistable switching is broken through, high-speed dynamic video display is achieved, meanwhile, the display reliability is effectively improved through polarity compensation, the service life is effectively prolonged through polarity compensation, and low power consumption and high compatibility are achieved.

The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display driving control method and system. Comprising the following steps: SS01, multi-modal sensing and state triggering: fusing a user distance, a fixation point coordinate and ambient light illumination in real time by using an integrated sensor, and triggering an eye protection mode or a self-adaptive sleep mechanism according to the user distance, the fixation point coordinate and the ambient light illumination, SS02, image partitioning and strategy generation: dividing a screen into N * M partitions, and SS03, distinguishing a dynamic region from a static region according to the brightness histogram and the motion vector of each partition, and outputting differentiated refresh rates and backlight strategies, and SS03, performing big data learning and model optimization, and collecting user behaviors. The system has the advantages that the infrared proximity sensor, the eyeball tracking sensor, the distance sensor and the ambient light sensor are integrated through the multi-mode sensing and state triggering module, multi-dimensional data such as user distance, fixation point coordinates and ambient light illuminance are fused in real time, and active intelligent sensing of the user state and the environment is achieved.

The present disclosure relates to the technical field of display. Provided are a shift register unit, a gate driving circuit, a display panel and a driving method therefor. The shift register unit is applied to a gate driving circuit in a display panel, the gate driving circuit comprising a plurality of cascaded shift register units, and the display panel comprising a pixel driving circuit. The shift register unit comprises: a first output circuit and a second output circuit, the first output circuit being used for providing in a first driving state a gate driving signal to the pixel driving circuit and used for providing in a second driving state an invalid level signal to the pixel driving circuit, and the second output circuit being used for providing an input signal to a lower-level shift register unit. The display panel using the shift register unit can realize adjustment of the local refresh rate. (figure 2)

In a current drive type display device of a variable refresh rate system such as an organic EL display device, an on-bias voltage line for supplying an on-bias voltage Vobs to be applied to a driving transistor in a pixel circuit is provided in a display portion in order to reduce an influence of a hysteresis characteristic of the driving transistor on display luminance. Therefore, when an operation mode is switched from the low refresh mode to the high refresh mode, among pixel circuits in the same column connected to the same data signal line, a pixel circuit to which data is written and a pixel circuit to which the on-bias voltage is applied can be mixed. This enables quick switching from the low refresh rate to the high refresh rate.

The invention discloses a pixel circuit and a display panel, and the pixel circuit is characterized in that a reset transistor, a second light-emitting control transistor and a driving transistor are all in an on state in a period of time, and a first light-emitting control transistor, a write-in transistor and a compensation transistor are all in an off state; according to the technical scheme, the driving transistor can be reset through the reset transistor and the second light-emitting control transistor, flicker can be improved, charging time is not occupied due to the fact that the driving transistor is not reset through the write-in transistor, and display with a higher refresh rate can be achieved.

The invention provides a display panel and a display device, and belongs to the technical field of display driving. The display panel comprises a gate drive unit and a frequency division unit, a display area of the display panel comprises a pixel array composed of a plurality of pixel circuits arranged in an array mode, the gate drive unit comprises a plurality of cascaded gate drive circuits, and each gate drive circuit is connected with one row of pixel circuits. The frequency division unit comprises a plurality of frequency division circuits, and the pixel circuit is used for refreshing and displaying according to a driving signal output by the gate driving circuit. And at least one frequency dividing circuit is arranged between each gate driving circuit and the pixel circuit. The frequency division unit is used for controlling the pixel circuits in partial areas of the display area to input driving signals through the frequency division circuits during the display period of one frame of image, and the pixel circuits in other areas do not input the driving signals, so that the pixel circuits in different areas in the display area carry out display at different refresh rates. Therefore, balance of the refresh rate and the power consumption of the display panel can be realized.

The invention discloses a partition refresh circuit and a refresh control method thereof, a display panel and display equipment, and relates to the technical field of display, the circuit comprises a plurality of cascaded gate driving modules, each gate driving module comprises a gate scanning unit and a refresh selection unit, a direct-current potential signal accessed to a direct-current voltage end by the grid scanning unit under the driving of a previous-stage scanning signal is transmitted to the refresh selection unit, the refresh selection unit is triggered to access a data memory signal provided by a data signal end, and a refresh starting signal acting on a refresh starting end is determined according to the data memory signal; and triggering the gate scanning unit to output a dynamic refreshing signal line by line from the initial pixel line so as to perform partition refreshing operation on all the pixel lines of the dynamic refreshing partition, and stopping the partition refreshing operation according to a reset signal of a reset end until the gate scanning unit scans to the final pixel line of the dynamic refreshing partition. Independent refresh rate control of different areas of the screen is realized to reduce the display power consumption of the screen.

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.

According to the refresh rate adjusting circuit and the display panel provided by the invention, the refresh starting module is arranged to output the starting signal to the gate driving circuit, so that the gate driving circuit can perform scanning signal re-output based on the starting signal besides default scanning signal output; therefore, the refresh rate of the pixel row corresponding to the gate drive circuit can be improved, and meanwhile, the refresh ending module is arranged to stop the improvement of the refresh rate, namely, the refresh starting module and the refresh ending module are used for realizing the selection of the refresh rate improvement area, so that the refresh rate improvement efficiency is improved. The selection for improving the refresh rate can be carried out on the region in the picture according to actual requirements; in order to realize resetting of re-refreshing, a refreshing and resetting module is arranged, so that the complete steps of starting, transmitting and ending in the re-refreshing process are realized, the refresh rate of partial areas in the display picture is improved, and the setting of different refresh rates of different areas in the display picture is realized.

The invention belongs to the technical field of display driving, and particularly relates to a control circuit, an image compensation control device and a display panel, and the control circuit comprises a picture monitoring unit which outputs a voltage signal corresponding to a current refresh rate when determining that a current display picture is an abnormal picture according to a plurality of display parameters; a delay control unit configured to compare the voltage signal with a turn-on threshold and a turn-off threshold respectively, and output a switch control signal based on a comparison result; the switch unit is configured to switch on or switch off a signal path between the image compensation output end and the post-stage driving circuit in response to the switch control signal; therefore, through cooperative work of the picture monitoring unit, the delay control unit and the switch unit, a stable buffer area is set for starting and stopping of the ICA function, and the problems of frequent switching of the ICA function and picture flickering caused by fluctuation of parameters such as the refresh rate near a critical value are solved.

The invention relates to the technical field of AMOLED display driving, and discloses an AMOLED display driving chip integrated system with high refresh rate and low power consumption. The system comprises a pixel flow time sequence analysis module, a dynamic compensation model construction module, a refresh rate adaptive modulation module and a power consumption constraint optimization module. A pixel stream time sequence analysis module captures video source frame cache data in real time, and extracts a pixel brightness distribution matrix and an inter-frame change gradient; a dynamic compensation model building module builds a dynamic voltage compensation network according to the current frame and historical frame information, and fuses the current frame and historical frame information through a space-time attention mechanism; the refresh rate adaptive modulation module generates a decision diagram according to the inter-frame change gradient, and regulates the refresh rate in different regions; and the power consumption constraint optimization module is combined with a chip junction temperature parameter to generate a partition backlight current constraint coefficient matrix. The system can optimize display image quality and fluency, realizes power consumption fine control, guarantees stable operation of a chip, and is suitable for various AMOLED display terminals.

The invention relates to an image processing method and device for virtual shooting. The method comprises the following steps: receiving a latest image generated by rendering a current virtual scene from a rendering module and associated information of the latest image; generating a target number of frame insertion images according to the latest image, the associated information of the latest image and the previous image; performing projection transformation on the newest image and each frame insertion image based on the corresponding camera data to obtain a transformed newest image and each transformed frame insertion image so as to correspond to a camera; and in response to the refresh rate of the screen, sequentially sending the transformed frame insertion images and the transformed latest image to the screen, so that the screen sequentially displays the transformed frame insertion images and the transformed latest image after the previous image is displayed. The real-time frame insertion is realized while the high resolution of the virtual scene picture is ensured, the screen display picture is free of pause and smoother, the frame rate of the screen image is improved, the virtual shooting effect is improved, and the shooting requirement is met.

The invention belongs to the technical field of display driving, and particularly relates to a control circuit, an image compensation control device and a display panel, and the control circuit comprises a picture detection module which is configured to detect a current display picture when the current display picture is determined to be an abnormal picture according to a plurality of display parameters. The refresh rate in the multiple display parameters is converted into a corresponding input voltage signal; the return difference comparison module is configured to compare the input voltage signal with an upper limit threshold value and a lower limit threshold value respectively based on return difference characteristics so as to output a corresponding switch control signal; the execution module is configured to switch on or switch off a signal path between the image compensation output end and a post-stage driving circuit in response to the switch control signal; therefore, through cooperative work of the picture detection module, the return difference comparison module and the execution module, a stable buffer area is set for starting and stopping of the ICA function, and the problems of frequent switching of the ICA function and picture flickering caused by fluctuation of parameters such as the refresh rate near a critical value are solved.

The embodiment of the invention discloses a backlight control method and device and display equipment. The method comprises the following steps: acquiring a frame period of an image frame; dividing the frame period into a preset total number of synchronization periods; distributing the preset total number of synchronization periods into a first preset number of black insertion periods and a second preset number of display periods, wherein the sum of the first preset number and the second preset number is equal to the preset total number; and controlling the backlight source according to the distribution, turning off the backlight source in the black insertion period, and turning on the backlight source in the display period. By means of the mode, under the application of the variable refresh rate, the proportion of the black insertion period to the display period can be kept constant, so that the consistency of the display average brightness is kept, the screen flicker problem caused by the change of the refresh rate is avoided, and the display effect is improved.

A transmission and display method, comprising: acquiring a first frame and a second frame which are adjacent to each other; generating a local frame on the basis of pixels of the second frame which are changed relative to the first frame; transmitting and displaying the first frame on the basis of a first refresh rate; transmitting a first frequency adjustment instruction on the basis of the local frame, wherein the first frequency adjustment instruction is used for instructing the refresh rate of a local display area of the local frame to be adjusted from the first refresh rate to a second refresh rate, and the first refresh rate is smaller than the second refresh rate; and transmitting and displaying the local frame on the basis of the second refresh rate.

Systems, methods, and devices perform synchronization operations for video streams. Methods include receiving a video frame at a frame capture unit, the video frame being included in a stream of video data, buffering the video frame using a buffer coupled between the frame capture unit and a frame display unit, and determining an offset value based, at least in part, on a refresh rate associated with the frame capture uni. Methods further include reading, using the frame display unit, the video frame from the buffer after a designated period of time defined by the offset value.

Embodiments of the present application provide a gate drive circuit, a driving method of a display panel and the display panel. The gate drive circuit comprises a plurality of cascaded gate drive sub-circuits, each of which corresponds to control of a row of sub-pixels. Each gate drive sub-circuit comprises a pull-up module, a pull-down module and an output control module. The pull-up module controls the potential of the first node according to the first level signal and the clock signal. The pull-down module controls the potential of the first node according to the preset low potential and the second level signal. The output control module outputs the corresponding driving signal to the corresponding sub-pixel through the output port according to the control signal, the preset low potential and the potential of the first node. Through the above setting, at least the problem that the power consumption of the smart device with the high refresh rate display panel is high and the endurance is poor is solved.

The invention relates to a hot-pluggable AI perception extension system suitable for multiple types of display terminals, and the system comprises a display terminal module, an integrated video input interface, and a power supply interface. The AI sensing module is electrically connected with the display terminal module in a hot plug mode through a magnetic type mechanical interface and used for collecting multi-mode user data in real time and executing local reasoning operation; the end-cloud collaborative learning module is in communication coupling with the AI sensing module and comprises an end-side model for offline dialogue and basic scene recognition and a cloud model for complex reasoning and global knowledge base calling; performing incremental optimization on the scene recognition capability through a differential privacy federation continuous learning mechanism based on local data shared by an end side model; and the cross-terminal rendering engine automatically acquires the extended display identification data of the display terminal, and matches the resolution ratio and the refresh rate of the target terminal in real time. The flexibility and compatibility of hardware expansion are remarkably improved, and high-precision reasoning in a complex scene is realized while the real-time performance is ensured.

The invention belongs to the field of LED display control, particularly relates to a software-definable LED driving chip gray scale display control method, and aims to solve the problems that the refresh rate of each gray scale cannot be flexibly adjusted, the nonlinear response of an LED driving chip and a lamp bead cannot be compensated, first scanning darkness cannot be solved and ghosting cannot be effectively eliminated in the prior art. The method comprises the following steps: determining the number of refresh cycles of one frame of display time and the number of gray scales displayed in each refresh cycle; calculating the initial gray scale weight of each gray scale bit, and adjusting the gray scale weight; scanning the transformation moment line by line according to each refresh cycle, and adjusting the position of the gray scale OE position in the subfield; and when to-be-displayed data is received, controlling the LED driving chip to complete gray scale display of the LED display screen. According to the method and the device, the refresh rate of each gray scale is flexibly adjusted, the nonlinear response is compensated, and the first scanning darkness and the ghosting are effectively eliminated.

A display apparatus, a backlight driving method, a system, a device, and a medium. The backlight driving method is applied to the display apparatus, and the display apparatus comprises a display panel and a backlight module which are stacked. The backlight driving method comprises: acquiring a refresh rate of a frame to be displayed of a display panel and parameters of the display panel (S10); determining a black frame insertion ratio of said frame on the basis of the refresh rate and the parameters of the display panel (S20); and providing a backlight driving signal for a backlight module on the basis of the black frame insertion ratio (S30).

The invention relates to a driving circuit and a driving method of a display panel and the display panel, the driving circuit comprises a time schedule controller, a memory and a level translator, the time schedule controller is provided with a first communication port, a second communication port and a third communication port, the second communication port is connected with the memory, the third communication port is connected with the level translator, and the level translator is connected with the memory. Wherein the time schedule controller is used for acquiring a refresh rate adjustment instruction, acquiring an overcurrent protection parameter corresponding to the refresh rate adjustment instruction, and sending the overcurrent protection parameter to the level translator; the memory is used for storing at least two over-current protection parameters; and the level converter is used for setting an overcurrent protection function of the display panel according to the overcurrent protection parameter, so that the width of a detection window of the overcurrent protection function is adaptive to the pulse width of the vertical clock signal under the target refresh rate. Through the circuit, the technical problem that the design of a fixed overcurrent protection parameter is difficult to adapt to a display panel with a variable refresh rate is solved.

The invention relates to a display device, a display system, a driving chip and a display control method. The display device comprises a control unit and a communication function unit. The communication function unit is connected with the control unit and is respectively connected with each group of display subareas; the control unit adjusts the packet sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture to obtain the adjusted packet sending rate; the communication function unit sequentially sends display data to each group of display partitions by taking a group as a unit through the adjusted group sending rate, so that the refresh rate for finishing refresh of all the group of display partitions is matched with the frame frequency; wherein one group of display subareas comprises one or more display subareas. According to the embodiment of the invention, the refresh rate of the display panel can be matched with the frame frequency while the grouped refresh of each group of display partitions can be realized, so that the VRR is realized, and the transmission pressure of a communication channel is greatly reduced.

The invention provides a display control method and electronic equipment, and the method comprises the steps: determining the use modes of the electronic equipment, and enabling the size parameters and / or display brightness of an available display area of a display screen of the electronic equipment to be different in different use modes; the display refresh rate of an available display area of the display screen is controlled based on the use mode, and in different use modes, the display refresh rate of the available display area is different.

The invention discloses a brightness frame insertion driving method for black insertion under a variable refresh rate, and the method comprises the steps: predicting the refresh rate of a current image frame when backlight drive illumination is carried out in each backlight subarea, so as to obtain a refresh rate prediction value N0 of the current image frame; comparing the refresh rate prediction value N0 of the predicted current image frame with a first refresh rate threshold value; if the refresh rate predicted value N0 is larger than or equal to a first refresh rate threshold value, a first driving mode is adopted to drive the current backlight partition; if the refresh rate predicted value N0 is smaller than the first refresh rate threshold value, a second driving mode is adopted to drive the current backlight partition; the second driving mode generates a brightness interpolation frame according to delay control logic; and the insertion position of the brightness insertion frame is controlled by the delay control logic.

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 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.

Provided herein may be a display device including: a display panel first scan lines, second scan lines, and pixels electrically connected to the first and second scan lines; a first scan driving circuit including a plurality of first shift registers each of which is configured to output a first scan signal to a corresponding first scan line and is configured to be reset by a first reset signal; a second scan driving circuit including a plurality of second shift registers each of which is configured to output a second scan signal to a corresponding second scan line and is configured to be reset by a second reset signal; and a timing controller configured to respectively output the first reset signal and the second reset signal through different signal lines. The display device may be improved in visibility so that images can be displayed at various refresh rates.

The embodiment of the invention provides a gate drive circuit and a display panel, the gate drive circuit comprises a plurality of cascaded gate drive sub-circuits, each gate drive sub-circuit correspondingly controls a row of sub-pixels, and each gate drive sub-circuit comprises a pull-up module, a pull-down module and an output control module. The pull-up module controls the potential of a first node according to a first level transmission signal and a clock signal; the pull-down module controls the potential of the first node according to a preset low potential and a second level transmission signal; the output control module outputs a corresponding driving signal to the corresponding sub-pixel through the output port according to the control signal, a preset low potential and the potential of the first node, and the output control module comprises a first transistor, a second transistor, a third transistor and a fourth transistor. Through the setting, the problems of high power consumption and poor cruising ability of the intelligent equipment with the high-refresh-rate display panel are at least solved.