System and method of automatic tracking type naked eye stereoscopic display equipment

Abstract

The invention discloses an automatic tracking type naked eye stereoscopic display equipment system and method, and relates to the technical field of stereoscopic display equipment, and the method comprises the following steps: building a dynamic viewpoint tracking chain based on the continuous collection result of the eye movement of an audience, synchronously collecting the environment light intensity change information through a photosensitive sensing unit, and transmitting the environment light intensity change information to a display unit; generating a double-reference baseline containing audience position information and environment illumination information in the time sequence; time segmentation rearrangement is carried out on viewpoint drift caused by rapid movement of audiences by utilizing double reference baselines, and illumination abrupt change sections are independently marked and then written into a delay buffer zone. The stereoscopic display output rhythm is stabilized through the double reference baselines and the time control mechanism, left and right parallax signals are kept consistent under the condition that audiences move or illumination fluctuates, visual discomfort is reduced, and watching stability is improved. Meanwhile, light field balance and frame-by-frame connection modes are combined, smooth reconstruction of brightness and time sequence is achieved, abnormal impact is reduced, stable display operation is guaranteed, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of stereoscopic display technology, and more specifically to a system and method for an automatic tracking naked-eye stereoscopic display device. Background Technology

[0002] Automatic tracking glasses-free stereoscopic display devices are display devices that achieve three-dimensional visual effects without the need for any auxiliary glasses. Their core principle is the collaborative work of automatic viewpoint tracking and multi-view stereoscopic display technology. The device dynamically adjusts the imaging direction of the displayed image based on the viewer's real-time position, allowing the left and right eyes to receive spatially encoded parallax information, thus forming depth perception in the brain. This device typically integrates a high-speed camera or infrared sensor to capture the viewer's eye or head position. By calculating the viewpoint coordinates in real time, it drives a liquid crystal light valve array, a lenticular lens array, or a light field control panel to reconstruct the angle, ensuring that the displayed content maintains a clear stereoscopic effect from different viewing positions. Compared to traditional fixed-viewpoint glasses-free 3D technology, this device can achieve dynamic stereoscopic presentation in multi-user or mobile scenarios, and is widely used in virtual displays, medical imaging, intelligent interactive terminals, and immersive visualization.

[0003] The existing technology has the following shortcomings: During the dynamic operation of an automatic tracking glasses-free 3D display device, when the viewer's position changes rapidly or external lighting conditions fluctuate suddenly, the viewpoint recognition algorithm is prone to short-term drift, causing the system to fail to accurately match the current position of the viewer's left and right eyes. At this time, the parallax signals of the left and right eyes cross-reverse, causing the 3D image to exhibit an inverted flickering phenomenon for a very short time, resulting in instantaneous visual information disorder. Because this process occurs extremely quickly, the human eye cannot adapt in time, easily causing users to experience strong dizziness, spatial disorientation, and other discomfort. Simultaneously, the abnormal image refresh caused by parallax reversal can cause the display control logic to frequently enter a restart protection state, leading to a chain reaction of problems such as driver board current fluctuations and signal buffer mismatch. In severe cases, it can even cause continuous system restarts and equipment-level failures such as display unit damage.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a system and method for an automatic tracking naked-eye stereoscopic display device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for an automatic tracking naked-eye stereoscopic display device, comprising the following steps: Step 1: Based on the continuous acquisition results of the audience's eye movements, establish a dynamic viewpoint tracking chain. Simultaneously acquire ambient light intensity change information through a photosensitive sensing unit, and generate a dual reference baseline containing audience position information and ambient light information in the time series to provide stable input data for the subsequent matching of stereoscopic display images. Step 2: Using dual reference baselines, the viewpoint drift caused by the rapid movement of the audience is time-segmented and rearranged, and the illumination change section is independently identified and written into the delay buffer, so that the display control unit can maintain continuous parallax signal output during the illumination change phase. Step 3: Based on the data content in the delay buffer, establish an image update rhythm table in the display control unit, and implement phase traction on the left and right display channels through time synchronization control signals to ensure that the dual display channels maintain phase consistency and transmission stability of parallax signal output before viewpoint drift repair is completed. Step 4: During the phase-pull output process, a light field balance ring is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time. The backlight driving voltage is dynamically adjusted according to the detection results to keep the brightness of the stereoscopic image balanced during the parallax signal locking stage. Step 5: Based on the output of the light field balance ring, perform frame-by-frame stitching processing on the parallax signal recovery path. After the ambient light stabilizes, release the data content in the delay buffer step by step to complete the smooth reconstruction of the left and right display channels, thereby eliminating the stereoscopic inverted flickering phenomenon caused by the parallax signal crossover and maintaining the stable operation of the device.

[0007] Preferably, the steps for establishing a dynamic viewpoint tracking chain based on continuous acquisition results of viewer eye movements include: A dynamic viewpoint tracking chain is established based on the continuous acquisition results of the audience's eye movements. By configuring multi-point imaging acquisition components in front of or above the display device, the position changes of the audience's eyes are continuously acquired at millisecond time intervals and a sequence of position information arranged in chronological order is formed. By using a photosensitive sensing unit to synchronously collect ambient light intensity information, the audience's position information and light change information are kept synchronized in the time dimension, forming two corresponding data streams; Using time series as the main line, audience location information and ambient lighting information are paired point by point to generate a dual reference baseline containing spatial coordinates and light intensity values, and the time resolution is kept consistent during storage. By utilizing the output results of dual reference baselines, the audience's position information and ambient lighting information are input into the stereoscopic display screen matching process. Through continuous time series data, the viewpoint change trend and brightness output are adjusted synchronously, so that the stereoscopic display screen maintains spatial consistency and brightness balance.

[0008] Preferably, the step of time-segmented rearrangement of viewpoint drift caused by rapid audience movement using dual reference baselines includes: When acquiring dual reference baselines containing audience location information and ambient lighting information, the audience viewpoint change data is analyzed with time as the main line. The audience movement amplitude is identified by the change trend of location information at adjacent time nodes and independent time segmentation units are formed. Based on the illumination information in the dual reference baseline, the illumination change characteristics of each time segment are analyzed, the segments with large illumination changes are identified and defined as illumination change segments, and these segments are independently identified in the time series and corresponded to the audience position information. The time-segmented data that has been identified is reassembled in chronological order to form a time-segmented rearrangement chain, and the light change segments are allocated to the delay buffer while maintaining data order consistency. Based on the rearranged time sequence, the display control unit outputs parallax signals, ensuring continuous parallax signal transmission during the delayed output phase in areas of sudden illumination changes and maintaining the stability of the stereoscopic display image.

[0009] Preferably, the step of establishing an image update rhythm table in the display control unit based on the data content in the delay buffer includes: Based on the audience position information and ambient lighting information stored in the delay buffer, a time-synchronized image update rhythm table is established. The viewpoint position and light intensity value of each time node are recorded and defined as the image update cycle, so that the display control unit can perform stable updates according to the rhythm table time pattern. Based on the interval data of time nodes in the image update rhythm table and the trend of illumination change, a time synchronization control signal is generated to ensure that the left and right display channels maintain synchronous output when reading the data of the delay buffer and to prevent parallax signal time offset. Phase traction is implemented using the time synchronization control signal as the traction reference, so that the left and right display channels output corresponding parallax information at the same time and maintain output phase consistency and transmission stability. By using an image update rhythm table to adjust the time alignment of the output status of the dual display channels, the time nodes of the delayed part and the real-time part are seamlessly connected, and a smooth transition from delayed output to real-time output is achieved.

[0010] Preferably, the time synchronization control signal corresponds one-to-one with the time nodes in the image update rhythm table, and triggers the output of the left and right display channels at fixed time intervals, so that the dual display channels maintain consistent output frequency during the connection between the release of data in the delay buffer band and the real-time data output, and continuously maintain the phase consistency of the parallax signal through phase traction, thereby ensuring the continuous output and time synchronization stability of the stereoscopic display image during the viewpoint drift repair stage.

[0011] Preferably, the step of introducing a light field balancing ring within the display control unit during the phase-pull output process includes: During the phase-traction output process, a light field balance ring structure is established in the display control unit to detect the difference in light energy density between the left and right display channels. Light energy data is collected in real time by setting a light energy acquisition path at the output end of the left and right display channels and a time-indexed light energy density sequence is formed. Based on the light energy data collected by the light field balance ring, the light energy density of the left and right display channels is compared and analyzed to determine the difference in light energy density and generate a light energy difference signal, so that the light energy change and the parallax signal output process are kept synchronized in time. The light energy difference signal is transmitted to the backlight drive control section, and the backlight drive voltage is dynamically adjusted in real time according to the light energy density difference, so that the light energy output of the left and right display channels tends to be balanced and the brightness of the stereoscopic picture is consistent. The light field balance ring continuously monitors the light energy output status of the left and right display channels. By gradually reducing the backlight drive voltage adjustment range, it enters the balance maintenance state, so that the stereoscopic image maintains stable brightness and consistent light energy during the parallax signal locking stage.

[0012] Preferably, when the light field balancing ring detects the difference in light energy density between the left and right display channels, the light energy acquisition path synchronously samples at fixed time intervals, the sampling frequency is consistent with the phase traction refresh frequency, and the light energy difference signal strictly corresponds to the parallax signal output in the time dimension. Through continuous acquisition and dynamic adjustment, the light energy output of the left and right display channels is kept consistent in time and space, thereby ensuring the brightness stability and visual balance of the stereoscopic image during the parallax signal locking stage.

[0013] Preferably, the step of performing frame-by-frame stitching processing on the parallax signal recovery path based on the output of the light field balancing loop includes: The light energy status of the left and right display channels is determined based on the output of the light field balance ring. When the difference in light energy density remains stable within a continuous time period, the parallax signal recovery stage is determined, and the parallax signal data of the corresponding time period is extracted from the delay buffer and sorted by time. The parallax signal recovery path is processed frame by frame, and the historical frame data in the delay buffer is continuously spliced ​​with the current output frame. The frame brightness output ratio is adjusted synchronously according to the light energy density information output by the light field balance ring to maintain consistent light energy. As ambient light gradually stabilizes, the display control unit releases the data in the delay buffer in a step-by-step manner according to the time sequence, so that the left and right display channels maintain synchronous output in the time dimension and achieve a smooth transition. When the data in the delay buffer is fully released, the smooth reconstruction of the left and right display channels is completed. The output of the light field balance ring is used as a reference to maintain the balance of light energy density, ensure the consistent brightness of the stereoscopic display screen and eliminate the inverted flicker caused by the cross reversal of parallax signals.

[0014] Preferably, during the frame-by-frame stitching process, the display control unit makes synchronous minor adjustments to the backlight driving voltage of the left and right display channels based on the light energy density difference trend output by the light field balance ring, so that the light energy output of each frame remains continuous and consistent in the time series, and maintains the brightness output balance during the step-by-step release stage of the delay buffer data, thereby ensuring that the parallax signal recovery path achieves smooth stitching and stable display under illumination changes.

[0015] The system of the automatic tracking naked-eye stereoscopic display device includes a viewpoint tracking baseline module, a time segmentation rearrangement module, a phase synchronization control module, a light field balance adjustment module, and a frame-by-frame smooth reconstruction module; Viewpoint tracking baseline module: Based on the continuous acquisition results of the audience's eye movements, a dynamic viewpoint tracking chain is established. The ambient light intensity change information is collected synchronously through the photosensitive sensing unit, and a dual reference baseline containing audience position information and ambient light information is generated in the time series. Time segment rearrangement module: Using dual reference baselines, the time segment rearrangement is performed on viewpoint drift caused by rapid movement of the audience, and the lighting change section is independently identified and written into the delay buffer. Phase synchronization control module: Based on the data content in the delay buffer, an image update rhythm table is established in the display control unit, and phase traction is implemented for the left and right display channels through time synchronization control signals; Light field balance adjustment module: During the phase traction output process, a light field balance loop is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time, and dynamically adjust the backlight driving voltage according to the detection results; Frame-by-frame smooth reconstruction module: Based on the output of the light field balance loop, the recovery path of the parallax signal is processed frame by frame. After the ambient light is restored to stability, the data content in the delay buffer is released step by step to complete the smooth reconstruction of the left and right display channels.

[0016] The technical effects and advantages provided by the present invention in the above technical solution are as follows: This invention constructs a dual-reference baseline based on viewer position and ambient lighting information, and introduces time-segmented rearrangement, delay buffering, and phase traction control during dynamic operation to ensure that the output rhythm of the stereoscopic display remains under control. Even when the viewer moves rapidly or lighting conditions fluctuate, the left and right display channels maintain phase consistency and continuous transmission of parallax signals, fundamentally suppressing parallax signal crossover and reversal. This allows the stereoscopic image to consistently present a stable spatial depth relationship in dynamic environments, effectively reducing discomfort caused by visual jumps and significantly improving the viewing comfort and reliability of naked-eye stereoscopic displays in practical applications.

[0017] This invention introduces a light field balancing loop and a frame-by-frame stitching mechanism during the parallax signal repair and output stage, enabling synchronous reconstruction of the left and right display channels in both brightness and time dimensions. By releasing the data content in the delay buffer in stages after the illumination stabilizes, the stereoscopic image smoothly transitions from an abnormal state to a stable state, avoiding abrupt output changes and electrical shocks during display control, thereby maintaining the continuous and stable operation of the display control logic and drive circuitry. This method not only reduces the probability of the system entering a protection state due to abnormal triggering but also extends the lifespan of the display unit, allowing the device to maintain long-term stable operation under complex dynamic conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a flowchart illustrating the operation method of the automatic tracking naked-eye stereoscopic display device of the present invention.

[0020] Figure 2 This is a schematic diagram of the modules of the automatic tracking naked-eye stereoscopic display device of the present invention. Detailed Implementation

[0021] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0022] This invention provides, for example Figure 1 The method for the automatically tracking glasses-free stereoscopic display device shown includes the following steps: Step 1: Based on the continuous acquisition results of the audience's eye movements, establish a dynamic viewpoint tracking chain. Simultaneously acquire ambient light intensity change information through a photosensitive sensing unit, and generate a dual reference baseline containing audience position information and ambient light information in the time series to provide stable input data for the subsequent matching of stereoscopic display images. The specific implementation method for this step is as follows: A dynamic viewpoint tracking chain is established based on continuous acquisition results of viewer eye movements. Multi-point imaging acquisition components are placed directly in front of or above the display device to continuously capture the positional changes of the viewer's eyes during viewing. This acquisition process performs continuous frame sampling at millisecond intervals, forming a time-sequential sequence of eye position information. When the viewer moves horizontally, tilts forward or backward, or adjusts their posture, the spatial coordinates of the eye reflection points change continuously over time. The acquisition components record the three-dimensional coordinates of the eye center point at each time point, forming a continuous displacement trajectory on the time axis. To ensure data continuity, the displacement difference between adjacent frames is smoothed during acquisition, creating a stable transition curve in space for the viewer's eye movement trajectory, thus constructing a continuous data chain for dynamic tracking. This dynamic viewpoint tracking chain covers the entire movement path of the viewer within the normal viewing range, providing fundamental positional information support for subsequent spatial orientation adjustments of the stereoscopic image.

[0023] After continuous acquisition of eye movement data, ambient light intensity is simultaneously acquired using photosensitive sensing units. These units are distributed around the perimeter of the display screen, recording changes in ambient light intensity in real time by sampling the incident light. The sampling frequency is consistent with the time frequency of eye movement acquisition, ensuring precise temporal alignment between the two sets of data. At each time point, the photosensitive sensing unit outputs a light intensity value, representing the average illuminance of the area where the viewer is located at that moment. Because viewer movement may cause changes in reflection angle or obstruction by external light sources, the light intensity data will exhibit fluctuations over time. During sampling, the photosensitive sensing unit extracts continuous illumination trends through internal integration, thereby capturing the changes in light intensity. In this way, the coordinate data of the viewer's eye position and the ambient light intensity data are simultaneously acquired and stored in the same time dimension, forming two corresponding data streams. This process ensures that the viewer's spatial position information and illumination change information are synchronized in time, laying a complete data foundation for the subsequent construction of a dual-reference baseline.

[0024] After acquiring synchronized audience position and illumination information, a dual-reference baseline containing both types of information is generated, using a time series as the main thread. Eye position data and illumination intensity data are paired point-by-point using timestamps as indices, ensuring that each time point contains the audience's three-dimensional position coordinates and the ambient light intensity value at that moment. All time point data are arranged chronologically, forming a continuous and complete time data chain. During the generation of the dual-reference baseline, the audience's viewpoint spatial displacement curve and illumination change curve are simultaneously written into a unified time data structure, giving each time period dual reference attributes of spatial position and illumination intensity information. The dual-reference baseline maintains a fixed sampling interval during storage to ensure consistent temporal resolution, recording every instantaneous state under conditions of rapid audience movement or sudden illumination changes. Through this temporal correspondence, the dual-reference baseline forms a continuous sequence in the time dimension and dual-reference information in the spatial and illumination dimensions, enabling the correlation of audience position information and ambient illumination information on the same time axis, thus providing a stable input basis for the dynamic matching of the stereoscopic display image.

[0025] Finally, using the output of the dual reference baselines, the viewer's position information and ambient lighting information are input into the matching stage of the stereoscopic display. The display control unit extracts the viewpoint change trend between adjacent time points based on continuous time-series data, and adjusts the projection direction of the left and right eye parallax images in real time, ensuring that the viewer receives the correct stereoscopic imaging signal from different viewing positions. Simultaneously, based on the changing trend of lighting information, the brightness output of the display image is adaptively adjusted to maintain a balance in the brightness received by the left and right eyes, thus ensuring visual continuity of the stereoscopic display effect even under fluctuating lighting conditions. The continuous output of the dual reference baselines allows for synchronous response between viewer viewpoint movement and lighting changes in the time dimension. When performing image matching, the display control unit can smoothly transition the lighting and displacement changes of the next time point based on the data from the previous time point, thereby avoiding image flickering or reverse misalignment caused by sudden changes in lighting or viewpoint drift. By continuously updating the dual reference baselines throughout the stereoscopic display process, the dynamic viewpoint tracking chain can maintain continuous operation, ensuring the real-time performance and stability of the stereoscopic display. The existence of dual reference baselines enables the audience's position information and ambient lighting information to form a unified reference framework at the data level. This allows the matching and output of the stereoscopic display to maintain spatial consistency and brightness balance under any dynamic conditions, ultimately achieving a stable stereoscopic visual experience and avoiding problems such as inverted stereoscopic images, flickering, and image misalignment caused by viewpoint drift.

[0026] Through the above steps, a dynamic viewpoint tracking chain is established based on the continuous acquisition results of the viewer's eye movements. The ambient light intensity change information is collected synchronously through the photosensitive sensing unit, and a dual reference baseline containing viewer position information and ambient light information is generated in the time series. This provides stable input data for the matching of subsequent stereoscopic display images, enabling the automatic tracking naked-eye stereoscopic display device to maintain the spatial stability, brightness balance and visual continuity of the stereoscopic image under complex dynamic conditions.

[0027] Step 2: Using dual reference baselines, the viewpoint drift caused by the rapid movement of the audience is time-segmented and rearranged, and the illumination change section is independently identified and written into the delay buffer, so that the display control unit can maintain continuous parallax signal output during the illumination change phase. The specific implementation method for this step is as follows: After acquiring a dual-reference baseline containing audience position and ambient lighting information, continuous data on audience viewpoint changes are analyzed over time. By analyzing the positional trends of adjacent time points within the dual-reference baseline, the amplitude and direction of audience movement within a short period are identified. When the audience's horizontal displacement, vertical displacement, or forward / backward distance exceeds the threshold for stable movement within the normal viewing range, rapid movement is considered to have occurred. At this point, the continuous viewpoint data chain is segmented according to the time sequence, and time segments showing significant changes in audience movement speed are extracted from the overall baseline to form independent time segmentation units. Each time segmentation unit corresponds to the audience's continuous movement trajectory during a specific phase, recording changes in viewpoint position, spatial orientation shift, and corresponding changes in lighting intensity within that phase. In this way, the audience's viewpoint change process is finely divided into multiple continuous time periods, thus providing a foundational structure for subsequent time rescheduling.

[0028] After forming time-segmented units, illumination change characteristics of each time period are analyzed based on the illumination information contained in the dual-reference baseline. By comparing the illumination intensity change curves of each time period, segments with large illumination changes are identified and defined as illumination abrupt change segments. Illumination abrupt change segments typically occur when rapid movement of the viewer's position causes occlusion, reflection, or sudden changes in the brightness of external light sources. At this time, the ambient light intensity fluctuates drastically in a short period of time, interfering with the brightness balance of the stereoscopic display and the stability of the parallax signal output. In this step, illumination abrupt change segments are independently identified in the time series. By adding markers at the start and end points of each illumination abrupt change segment, the time range of drastic illumination changes is clearly distinguished in the overall data chain, facilitating subsequent processing. At the same time, the identification of illumination abrupt change segments maintains a one-to-one correspondence with the viewer's position information, linking each illumination change segment with the viewpoint displacement within that time period. This allows for the simultaneous consideration of the combined effects of spatial position changes and illumination changes during time reordering.

[0029] After identifying the illumination abrupt change segments, all identified time-segmented data are reassembled in chronological order to form a time-segmented rearrangement chain. The time-segmented rearrangement process is based on a dual-reference baseline time series, prioritizing illumination abrupt change segments in the delay processing sequence. During rearrangement, non-illumination abrupt change segments maintain their original time order, while illumination abrupt change segments are temporarily removed from the main time series and reassigned to a delay buffer. The delay buffer delays the output of the data corresponding to the illumination abrupt change segments in the time dimension, allowing the display control unit to obtain additional time intervals when processing data at this stage, thus maintaining the continuity of the output signal. Each illumination abrupt change segment data written into the delay buffer contains the viewer's position information and corresponding illumination information. This data maintains integrity and sequential consistency during the buffering process, without structural changes. Through time-segmented rearrangement, viewpoint changes and illumination fluctuations during rapid viewpoint movement are effectively separated, preventing short-term viewpoint drift from directly affecting the output stability of the stereoscopic display.

[0030] After the time-reordering and delayed writing of the illumination change segment are completed, the display control unit outputs the parallax signal based on the rearranged time sequence. At this time, the data for the illumination change segment is stored in a delay buffer, while the viewpoint data under normal lighting conditions is output in its original time order, enabling the display control unit to maintain continuous parallax signal output during the illumination change phase. When the illumination change segment data stored in the delay buffer reaches the output time sequence, its contents are released sequentially to the display control unit, ensuring uninterrupted output signal continuity. In this way, viewpoint drift caused by rapid viewer movement and illumination changes no longer simultaneously affect the stereoscopic display image. The display control unit can maintain stable transmission of left and right eye parallax signals throughout the illumination change phase, thus preventing the stereoscopic image from inverting or flickering in a short period. The introduction of the delay buffer provides a smooth transition time during the output of the illumination change segment, ensuring that the continuous output of the parallax signal is not disturbed by changes in external lighting, thereby maintaining stable brightness balance and spatial depth in the stereoscopic display image.

[0031] Through the aforementioned sequential steps, the viewpoint drift caused by rapid viewer movement is time-segmented and rearranged using dual reference baselines. Illumination change segments are independently identified and written into a delay buffer, enabling the display control unit to maintain continuous parallax signal output during illumination change phases. This step, by segmenting and dynamically rearranging viewer position information and illumination change information in the time dimension, allows the stereoscopic display device to maintain the continuity and stability of the output image under dynamic viewing conditions. It prevents image flicker, depth inversion, and stereoscopic misalignment caused by the simultaneous effects of viewpoint drift and illumination changes, thereby achieving a consistently stable stereoscopic display effect.

[0032] Step 3: Based on the data content in the delay buffer, establish an image update rhythm table in the display control unit, and implement phase traction on the left and right display channels through time synchronization control signals to ensure that the dual display channels maintain phase consistency and transmission stability of parallax signal output before viewpoint drift repair is completed. The specific implementation method for this step is as follows: Based on the audience position information and ambient lighting information stored in the time-delay buffer, a time-synchronized image update rhythm table is established. The data in the time-delay buffer records viewpoint position information during periods of sudden lighting changes and rapid audience movement in chronological order. This data maintains a complete temporal index and spatial position correspondence before delayed output. By extracting the data change trends of adjacent time nodes in the time-delay buffer, the viewpoint position corresponding to each time node and the lighting intensity value at that moment are recorded in the image update rhythm table. The image update rhythm table uses time as the main axis and viewpoint coordinates and lighting intensity as reference parameters to define the refresh rhythm of the displayed image in a hierarchical manner. Each time node in the table corresponds to one image update cycle, and the order, interval, and duration of image updates are consistent with the time structure in the time-delay buffer. In this way, the display control unit can sequentially extract the data content from the time-delay buffer according to the time rhythm in the image update rhythm table, providing a synchronization reference for subsequent dual-channel phase traction, ensuring that the displayed image can still be stably updated according to the preset time pattern of the rhythm table before viewpoint drift correction.

[0033] After the image update rhythm table is established, a time synchronization control signal corresponding to the display control signal is generated based on the interval data of the time nodes in the rhythm table and the illumination change trend. The time synchronization control signal, based on the rhythm table, converts the update cycle of each time node into a specific time synchronization pulse sequence to guide the refresh timing of the left and right display channels. Each time synchronization signal corresponds to a screen update node in the rhythm table and maintains a fixed time interval, enabling the display control unit to trigger the image output of the left and right display channels under a precise time reference. The time synchronization control signal maintains strict consistency with the output time of the delay buffer, ensuring that the left and right display channels can start and end synchronously when reading delayed data, thus preventing the parallax signal from shifting in time. In this process, the time synchronization control signal not only controls the screen refresh rhythm but also determines the phase relationship of the left and right display channels, providing a time anchor point for subsequent phase traction. In this way, the left and right display channels can receive and output data content in the delay buffer at the same time frequency, ensuring that the stereoscopic display image maintains a continuous time synchronization state during the dynamic restoration phase.

[0034] After the time synchronization control signal is established, phase traction is applied to the left and right display channels using the time synchronization control signal as the traction reference. Phase traction refers to controlling the refresh timing of the left and right display channels to ensure that the parallax signals of the two channels remain consistent in the time dimension. By performing phase matching on each time synchronization signal, the start time, duration, and image output order of the left and right display channels are unified, so that the two channels output parallax information corresponding to the same time node in the delay buffer at the same time. At this time, the left and right display channels are both tractioned by the same time synchronization signal during the output phase, and their output rhythm is strictly executed in the order of the image update rhythm table. When the viewer's viewpoint drift has not been fully corrected, phase traction ensures that the two channels maintain a synchronized output frequency and a parallax signal with consistent phase, thereby preventing left and right image misalignment or depth reversal caused by the early or late output of a single channel. The phase traction process continues to act throughout the entire viewpoint drift correction period, ensuring that the output of the two display channels is always in a time-synchronized state during this stage. In this way, the stereoscopic image forms a smooth transition in the time dimension, without flickering or reverse switching, ensuring that the viewer can still feel the continuous stereoscopic effect during the viewpoint correction process.

[0035] After phase traction is implemented, the output state of the dual display channels is continuously time-aligned using an image update rhythm table. As the viewer's viewpoint gradually returns to its normal position and the data output in the delay buffer gradually overlaps with the real-time acquired data, the display control unit dynamically adjusts the output rhythm according to the time markers in the image update rhythm table, ensuring seamless connection between the time nodes of the delayed portion and the time nodes of the real-time portion. At this time, the left and right display channels are still in phase traction mode. By fine-tuning the output interval of adjacent time nodes, the output phase difference of the two channels is kept within a constant range, ensuring the phase consistency and transmission stability of the parallax signals of the two channels. After the viewpoint drift is corrected, the delay buffer is gradually released, and the display control unit automatically returns to the normal refresh cycle according to the last set of time nodes in the rhythm table, completing a smooth transition from delayed output to real-time output. Throughout the process, the image update rhythm table acts as a time reference, the time synchronization control signal provides the traction for the output rhythm, and phase traction maintains the synchronization of the left and right display channels, ensuring that the stereoscopic display image maintains a continuous output state before and after viewpoint drift correction, without flickering, discontinuity, or misalignment.

[0036] Through the above steps, an image update rhythm table is established in the display control unit based on the data content in the delay buffer. Phase traction is then applied to the left and right display channels via time synchronization control signals, ensuring phase consistency and transmission stability of the parallax signal output before viewpoint drift correction is completed. Through the synergistic effect of delay data, time control, and phase traction, the automatic tracking glasses-free stereoscopic display device can maintain smooth updates of the stereoscopic image even under dynamic viewpoint drift conditions. This achieves continuity in the temporal dimension and consistency in the spatial dimension of the stereoscopic display image, thereby ensuring a stable and comfortable stereoscopic visual experience for viewers during dynamic viewing.

[0037] Step 4: During the phase-pull output process, a light field balance ring is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time. The backlight driving voltage is dynamically adjusted according to the detection results to keep the brightness of the stereoscopic image balanced during the parallax signal locking stage. The specific implementation method for this step is as follows: During the phase-pull output process, a light field balancing ring structure is established within the display control unit to detect the difference in light energy density between the left and right display channels. The light field balancing ring collects output light intensity information from the left and right display channels in real time by setting light energy acquisition paths at their output ends. Each light energy acquisition path corresponds to a light output point in a specific area of ​​the display screen. These acquisition points are evenly distributed across different areas of the display panel to obtain representative data on the overall light energy distribution. The light energy acquisition paths are synchronized with the display control signal in time, and their sampling frequency is consistent with the phase-pull refresh frequency, ensuring a strict correspondence between the light energy data and the parallax signal output process. The collected light energy data is continuously input into the light field balancing ring, forming a time-indexed light energy density sequence. In this way, the light energy output status of the left and right display channels within the same time period is captured simultaneously, enabling the light field balancing ring to obtain the real-time light energy changes of the two channels throughout the entire phase-pull output process, providing an accurate light energy reference for subsequent brightness adjustment.

[0038] After completing light energy acquisition, the light field balancing loop compares and analyzes the light energy density of the left and right display channels. By matching and comparing the light energy data of the left and right channels at the same time point, the degree of difference in light energy density between the two channels is determined. When the difference in light energy density exceeds a preset balancing threshold, the light field balancing loop internally generates a light energy difference signal, which reflects the direction and magnitude of the brightness deviation between the two channels at that time point. The light energy difference signal is strictly synchronized with the phase-pull output in the time dimension, ensuring that the change in light energy corresponds consistently with the output process of the parallax signal. By monitoring the continuous light energy difference at multiple time points, the light field balancing loop forms a light energy density difference trend line, representing the continuity of light energy changes in the left and right channels during the phase-pull output process. Through the formation of this continuous trend, the directional characteristics of light energy changes can be identified, such as a situation where the brightness of one channel is continuously higher or lower, thus providing a continuous reference for subsequent dynamic backlight adjustment.

[0039] After obtaining the light energy difference signal, the light field balancing ring transmits the signal to the backlight drive control section, which dynamically adjusts the backlight drive voltage in real time based on the detected light energy density difference. The adjustment of the backlight drive voltage is based on the amplitude and direction of the light energy difference between the left and right channels. When the light energy density of one channel is higher than that of the other, the light field balancing ring controls the backlight drive section to slightly reduce the drive voltage of the channel with the lower light energy density, while slightly increasing the drive voltage of the channel with the lower light energy density, so that the light energy output of the two channels gradually tends to balance. The adjustment of the backlight drive voltage is performed on a millisecond timescale, ensuring that the brightness adjustment process does not cause screen flicker or response delay. The light field balancing ring works continuously throughout the phase-traction output stage, continuously detecting and adjusting the light energy state of the left and right display channels, keeping the light energy density difference within a controllable range. When the viewer's viewpoint is in the drift correction stage, the light energy adjustment process and the phase-traction process of the parallax signal are synchronized, ensuring that the stereoscopic display image maintains stable spatial depth while its overall brightness remains visually consistent, preventing visual misalignment or depth deviation caused by left-right brightness differences.

[0040] After dynamic backlight adjustment is completed, the light field balancing loop continuously monitors the light output of the left and right display channels to ensure the maintenance of brightness balance. As the viewer's viewpoint gradually returns to its normal position, the parallax signal enters the locking phase, and the light field balancing loop continues to collect light output information from the left and right display channels at fixed time intervals. When the light energy difference is detected to be stabilizing, the light field balancing loop gradually reduces the adjustment amplitude of the backlight drive voltage, allowing the adjustment process to enter a balance maintenance state. At this time, the output light energy of the left and right display channels remains consistent in the time dimension and forms a uniform light field in the spatial distribution, ensuring that the brightness of the stereoscopic image is evenly distributed throughout the display area, avoiding local dark or bright areas caused by uneven illumination. The light field balancing loop operates synchronously with the display control process throughout the phase traction output phase. Through continuous detection, difference judgment, dynamic adjustment, and balance maintenance, it ensures that the brightness of the stereoscopic display image is stable and consistent with the light energy during the parallax signal locking phase, allowing the viewer to experience a natural, smooth, and seamless stereoscopic visual effect.

[0041] Through the above steps, a light field balancing loop is introduced into the display control unit, enabling real-time detection and dynamic adjustment of the light energy density of the left and right display channels during phase-driven output. The light field balancing loop detects the difference in light energy density between the left and right display channels in real time and dynamically adjusts the backlight driving voltage based on the detection results, ensuring that the stereoscopic image maintains brightness uniformity during the parallax signal locking phase. This step, through the coordinated control of light energy detection and backlight adjustment, ensures that the stereoscopic display image not only maintains phase consistency of the parallax signal during dynamic output but also achieves continuous balance in light energy distribution, thereby ensuring that the visual depth and brightness uniformity of the stereoscopic image remain stable throughout the entire display process.

[0042] Step 5: Based on the output of the light field balance loop, perform frame-by-frame stitching processing on the parallax signal recovery path. After the ambient light stabilizes, release the data content in the delay buffer step by step to complete the smooth reconstruction of the left and right display channels, thereby eliminating the stereoscopic inverted flickering phenomenon caused by the cross-reversal of parallax signals and maintaining the stable operation of the device. The specific implementation method for this step is as follows: After the light field balancing ring completes light energy density detection and backlight drive voltage adjustment, it determines the light energy status of the left and right display channels based on the output of the light field balancing ring. When the light field balancing ring detects that the difference in light energy density between the left and right display channels is gradually stabilizing, the display control unit determines the timing for entering the parallax signal recovery stage based on the temporal trend of the light energy difference. In this stage, the output of the light field balancing ring is used as the trigger condition for parallax signal recovery. Only when the light energy density remains stable over a continuous time period and the brightness difference between the left and right channels is below a set threshold, the frame-by-frame stitching process of the parallax signal recovery path begins. At this time, the display control unit extracts the parallax signal data for the corresponding time period from the delay buffer and sorts these data according to the time output sequence of the light energy balancing ring, ensuring that the frame sequence to be recovered is consistent with the light field balancing state in time. By using the output of the light field balancing ring as the basis for determining the start of recovery, it ensures that the parallax signal recovery process starts under stable lighting conditions, providing a reliable light energy balance foundation for subsequent frame-by-frame stitching.

[0043] After the parallax signal recovery phase is initiated, a frame-by-frame stitching process is implemented on the parallax signal recovery path. This frame-by-frame stitching process is time-based, continuously splicing historical frame data from the delay buffer with the current output frame to maintain temporal continuity. The stitching order of each frame follows the original time sequence in the delay buffer, ensuring that the inter-frame interval matches the actual display rhythm. During the stitching process, the display control unit synchronously adjusts the brightness output ratio of each frame based on the light energy density information of the left and right channels provided by the light field balance ring, ensuring that the brightness of the newly released frame is consistent with the brightness of the current output frame, thus preventing sudden brightness changes or edge flickering at frame transitions. Each frame undergoes brightness balancing adjustment before output, ensuring that the left and right display channels maintain the same light energy output level during frame switching. Through this frame-by-frame stitching method, the historical parallax signal in the delay buffer can be seamlessly connected with the currently output parallax signal, achieving a smooth transition in the stereoscopic image.

[0044] After frame-by-frame stitching is completed, as ambient light gradually stabilizes, the display control unit begins to release the data in the delay buffer in stages. The staged release process proceeds sequentially, releasing the parallax signal data that has not yet been output from the delay buffer into the left and right display channels segment by segment. The release rate is dynamically adjusted based on the rate of change of light energy output by the light field balancing ring. When the light change slows down, the release rate gradually increases to synchronize the data in the buffer with the real-time acquired data as quickly as possible; when there are still slight fluctuations in light change, the release rate remains stable to prevent parallax signal jumps caused by excessively fast output. During the staged release process, the left and right display channels simultaneously receive delayed data, ensuring that the two channels output at the same time to guarantee the synchronicity of parallax signal recovery. As the data in the delay buffer is gradually released, the delayed data overlaps with the real-time acquired data in time, and the output content of the left and right display channels returns to the real-time state. Through this step-by-step release mechanism, the recovery process of the stereoscopic image forms a smooth transition in time, so that the recovery process of the parallax signal matches the stabilization process of the illumination, avoiding image jitter or flickering caused by the release of the buffer band too fast or too slow.

[0045] After the data in the delay buffer is completely released, the display control unit completes the smooth reconstruction of the left and right display channels, forming a stable stereoscopic display image. The smooth reconstruction process uses the output of the light field balance ring as a real-time reference, ensuring that the left and right display channels maintain a balanced light energy density during the output phase. As the parallax signal is fully recovered, the display control unit continues to make minor synchronous adjustments to the backlight drive voltage of the left and right channels based on the light energy density data, maintaining consistent image brightness. During this process, the temporal continuity formed by frame-by-frame stitching interacts with the light energy stability provided by the light field balance ring, ensuring that the recovered stereoscopic image maintains a natural balance in brightness, contrast, and depth. Because the parallax signal is always stitched and released under balanced light energy conditions throughout the recovery process, the stereoscopic image will not exhibit left-right reversal or depth misalignment, thus completely eliminating stereoscopic inversion flicker caused by parallax signal cross-reversal. After completing the smooth reconstruction of the left and right display channels, the display control unit enters a stable operating state. The parallax signal recovery path and the real-time output path are re-merged, and the entire stereoscopic display device returns to its normal operating rhythm, achieving a continuous transition from the dynamic restoration stage to the steady-state display stage.

[0046] Through the execution of the above consecutive steps, based on the output of the light field balancing ring, frame-by-frame stitching processing was performed on the parallax signal recovery path. After the ambient light stabilized, the data content in the delay buffer was released step-by-step, completing the smooth reconstruction of the left and right display channels. By guiding the timing of the parallax signal recovery through the light energy output of the light field balancing ring, the recovery process was coordinated with the illumination stabilization process, achieving frame-by-frame stitching and smooth transition of the parallax signal. This effectively eliminated the stereoscopic inversion flicker caused by parallax signal crossover, ensuring that the stereoscopic display maintains visual stability and depth consistency in both the recovery and steady-state phases, guaranteeing a consistently stable and reliable stereoscopic display effect during dynamic operation.

[0047] Beneficial effect 1: This invention constructs a dual-reference baseline based on viewer position and ambient lighting information, and introduces time-segmented rearrangement, delay buffering, and phase traction control during dynamic operation to ensure that the output rhythm of the stereoscopic display remains under control. Even when the viewer moves rapidly or lighting conditions fluctuate, the left and right display channels maintain phase consistency and continuous transmission of parallax signals, fundamentally suppressing parallax signal crossover and reversal. This allows the stereoscopic image to consistently present a stable spatial depth relationship in dynamic environments, effectively reducing discomfort caused by visual jumps and significantly improving the viewing comfort and reliability of naked-eye stereoscopic displays in practical applications.

[0048] Benefit 2: This invention introduces a light field balancing loop and a frame-by-frame stitching mechanism during the parallax signal repair and output stage, enabling synchronous reconstruction of the left and right display channels in both brightness and time dimensions. By releasing the data content in the delay buffer in stages after the illumination stabilizes, the stereoscopic image smoothly transitions from an abnormal state to a stable state, avoiding abrupt output changes and electrical shocks during display control, thereby maintaining the continuous and stable operation of the display control logic and drive circuitry. This method not only reduces the probability of the system entering a protection state due to abnormal triggering but also extends the lifespan of the display unit, allowing the device to maintain long-term stable operation under complex dynamic conditions.

[0049] This invention provides, for example Figure 2 The system of the automatic tracking naked-eye stereoscopic display device shown includes a viewpoint tracking baseline module, a time segment rearrangement module, a phase synchronization control module, a light field balance adjustment module, and a frame-by-frame smooth reconstruction module; Viewpoint tracking baseline module: Based on the continuous acquisition results of the audience's eye movements, a dynamic viewpoint tracking chain is established. The ambient light intensity change information is collected synchronously through the photosensitive sensing unit, and a dual reference baseline containing audience position information and ambient light information is generated in the time series. Time segment rearrangement module: Using dual reference baselines, the time segment rearrangement is performed on viewpoint drift caused by rapid movement of the audience, and the lighting change section is independently identified and written into the delay buffer. Phase synchronization control module: Based on the data content in the delay buffer, an image update rhythm table is established in the display control unit, and phase traction is implemented for the left and right display channels through time synchronization control signals; Light field balance adjustment module: During the phase traction output process, a light field balance loop is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time, and dynamically adjust the backlight driving voltage according to the detection results; Frame-by-frame smooth reconstruction module: Based on the output of the light field balance loop, the recovery path of the parallax signal is processed frame by frame. After the ambient light is restored to stability, the data content in the delay buffer is released step by step to complete the smooth reconstruction of the left and right display channels.

[0050] The method for an automatic tracking glasses-free stereoscopic display device provided in this embodiment of the invention is implemented through the system of the aforementioned automatic tracking glasses-free stereoscopic display device. For details of the specific methods and processes of the system of the automatic tracking glasses-free stereoscopic display device, please refer to the embodiments of the method for the aforementioned automatic tracking glasses-free stereoscopic display device, which will not be repeated here.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for an automatic tracking naked-eye stereoscopic display device, characterized in that, Includes the following steps: Step 1: Based on the continuous acquisition results of the audience's eye movements, establish a dynamic viewpoint tracking chain. Simultaneously acquire ambient light intensity change information through a photosensitive sensing unit, and generate a dual reference baseline containing audience position information and ambient light information in the time series. Step 2: Using dual reference baselines, the viewpoint drift caused by the rapid movement of the audience is rearranged in time segments, and the illumination change segments are independently identified and written into the delay buffer. Step 3: Based on the data content in the delay buffer, establish an image update rhythm table in the display control unit, and implement phase traction for the left and right display channels through time synchronization control signals; Step 4: During the phase-driven output process, a light field balancing ring is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time, and to dynamically adjust the backlight driving voltage based on the detection results; Step 5: Based on the output of the light field balance ring, perform frame-by-frame stitching on the parallax signal recovery path. After the ambient light stabilizes, release the data content in the delay buffer step by step to complete the smooth reconstruction of the left and right display channels.

2. The method for an automatic tracking naked-eye stereoscopic display device according to claim 1, characterized in that, The steps for establishing a dynamic viewpoint tracking chain based on continuous acquisition results of viewer eye movements include: A dynamic viewpoint tracking chain is established based on the continuous acquisition results of the audience's eye movements. By configuring multi-point imaging acquisition components in front of or above the display device, the position changes of the audience's eyes are continuously acquired at millisecond time intervals and a sequence of position information arranged in chronological order is formed. By using a photosensitive sensing unit to synchronously collect ambient light intensity information, the audience's position information and light change information are kept synchronized in the time dimension, forming two corresponding data streams; Using time series as the main line, audience location information and ambient lighting information are paired point by point to generate a dual reference baseline containing spatial coordinates and light intensity values; By utilizing the output results of dual reference baselines, the audience position information and ambient lighting information are input into the stereoscopic display screen matching process, and the viewpoint change trend and brightness output are synchronously adjusted through continuous time series data.

3. The method for an automatic tracking naked-eye stereoscopic display device according to claim 2, characterized in that, The steps for time-segmented rearrangement of viewpoint drift caused by rapid audience movement using dual reference baselines include: When acquiring dual reference baselines containing audience location information and ambient lighting information, the audience viewpoint change data is analyzed with time as the main line. The audience movement amplitude is identified by the change trend of location information at adjacent time nodes and independent time segmentation units are formed. Based on the illumination information in the dual reference baseline, the illumination change characteristics of each time segment are analyzed, the segments with large illumination changes are identified and defined as illumination change segments, and these segments are independently identified in the time series and corresponded to the audience position information. The time-segmented data that has been identified is recombined in chronological order to form a time-segmented rearrangement chain, and the light change segment is allocated to the delay buffer. Based on the rearranged time sequence, the display control unit outputs a parallax signal, ensuring continuous parallax signal transmission during the delayed output phase in areas of sudden changes in illumination.

4. The method for an automatic tracking glasses-free stereoscopic display device according to claim 3, characterized in that, The steps for establishing an image update schedule in the display control unit based on the data content in the delay buffer band include: A time-synchronized image update rhythm table is established based on the audience position information and ambient lighting information stored in the delay buffer. The viewpoint position and lighting intensity value at each time node are recorded and defined as the image update cycle. Based on the interval data of time nodes in the image update rhythm table and the trend of light change, a time synchronization control signal is generated to ensure that the left and right display channels maintain synchronous output when reading the data of the delay buffer. Phase traction is implemented using the time synchronization control signal as the traction reference, so that the left and right display channels output corresponding parallax information at the same time. The output status of the dual display channels is adjusted for time alignment using an image update rhythm table, so that the time nodes of the delayed part and the real-time part are seamlessly connected.

5. The method for an automatic tracking glasses-free stereoscopic display device according to claim 4, characterized in that, The time synchronization control signal corresponds one-to-one with the time nodes in the image update rhythm table, and triggers the output of the left and right display channels at fixed time intervals, so that the dual display channels maintain consistent output frequency during the connection between the release of data in the delay buffer band and the real-time data output, and continuously maintain the phase consistency of the parallax signal through phase traction.

6. The method for an automatic tracking naked-eye stereoscopic display device according to claim 4, characterized in that, The steps for introducing a light field balancing loop into the display control unit during phase-driven output include: During the phase-traction output process, a light field balance ring structure is established in the display control unit to detect the difference in light energy density between the left and right display channels. Light energy data is collected in real time by setting a light energy acquisition path at the output end of the left and right display channels and a time-indexed light energy density sequence is formed. Based on the light energy data collected by the light field balance ring, the light energy density of the left and right display channels is compared and analyzed to determine the difference in light energy density and generate a light energy difference signal. The light energy difference signal is transmitted to the backlight drive control section, and the backlight drive voltage is dynamically adjusted in real time according to the light energy density difference, so that the light energy output of the left and right display channels tends to be balanced. The light field balance ring continuously monitors the light output status of the left and right display channels and enters a balance maintenance state by gradually reducing the backlight drive voltage adjustment amplitude.

7. The method for an automatic tracking glasses-free stereoscopic display device according to claim 6, characterized in that, When the light field balancing ring detects the difference in light energy density between the left and right display channels, the light energy acquisition path synchronously samples at fixed time intervals. The sampling frequency is consistent with the phase traction refresh frequency. The light energy difference signal corresponds to the parallax signal output in the time dimension. Through continuous acquisition and dynamic adjustment, the light energy output of the left and right display channels is kept consistent in time and space.

8. The method for an automatic tracking naked-eye stereoscopic display device according to claim 6, characterized in that, The steps for performing frame-by-frame stitching processing on the parallax signal recovery path based on the output of the light field balancing loop include: The light energy status of the left and right display channels is determined based on the output of the light field balance ring. When the difference in light energy density remains stable within a continuous time period, the parallax signal recovery stage is determined, and the parallax signal data of the corresponding time period is extracted from the delay buffer and sorted by time. The parallax signal recovery path is processed frame by frame, and the historical frame data in the delay buffer is continuously spliced ​​with the current output frame. The frame brightness output ratio is adjusted synchronously according to the light energy density information output by the light field balance ring. As ambient light gradually returns to stability, the display control unit releases the data in the delay buffer in a step-by-step manner according to the time sequence, so that the left and right display channels maintain synchronous output in the time dimension; When the data in the delay buffer is completely released, the smooth reconstruction of the left and right display channels is completed, and the output of the light field balance ring is used as a reference to maintain the balance of light energy density.

9. The method for an automatic tracking naked-eye stereoscopic display device according to claim 8, characterized in that, During the frame-by-frame stitching process, the display control unit makes synchronous minor adjustments to the backlight driving voltage of the left and right display channels based on the trend of light energy density difference output by the light field balance ring, so that the light energy output of each frame remains continuous and consistent in the time series, and maintains brightness output balance during the step-by-step release phase of the delay buffer data.

10. A system for an automatic tracking glasses-free stereoscopic display device, comprising a method for implementing the automatic tracking glasses-free stereoscopic display device according to any one of claims 1-9, characterized in that, It includes a viewpoint tracking baseline module, a temporal segmentation rearrangement module, a phase synchronization control module, a light field balance adjustment module, and a frame-by-frame smooth reconstruction module; Viewpoint tracking baseline module: Based on the continuous acquisition results of the audience's eye movements, a dynamic viewpoint tracking chain is established. The ambient light intensity change information is collected synchronously through the photosensitive sensing unit, and a dual reference baseline containing audience position information and ambient light information is generated in the time series. Time segment rearrangement module: Using dual reference baselines, the time segment rearrangement is performed on viewpoint drift caused by rapid movement of the audience, and the lighting change section is independently identified and written into the delay buffer. Phase synchronization control module: Based on the data content in the delay buffer, it establishes an image update rhythm table in the display control unit and implements phase traction for the left and right display channels through time synchronization control signals; Light field balance adjustment module: During the phase traction output process, a light field balance loop is introduced into the display control unit to detect the difference in light energy density between the left and right display channels in real time, and dynamically adjust the backlight driving voltage according to the detection results; Frame-by-frame smooth reconstruction module: Based on the output of the light field balance loop, the recovery path of the parallax signal is processed frame by frame. After the ambient light is restored to stability, the data content in the delay buffer is released step by step to complete the smooth reconstruction of the left and right display channels.

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