Television control method and device, equipment, storage medium and television system

Abstract

The invention relates to a television control method, device and equipment, a storage medium and a television system, and belongs to the technical field of household appliances. The method comprises the steps of obtaining audience position information and an environment state through a sensor assembly; dynamically adjusting the visual angle range and sound field distribution of the display content based on the audience position information, so that the audience-visual content mainly covers the area where the audience is located; a privacy protection mode is automatically switched according to the environment state; wherein the adjustment of the visual angle range and the adjustment of the sound field distribution are realized through a cooperative working mechanism, and integrated privacy protection is formed. According to the technical scheme, the audience area is covered with the audience content in a centralized mode, content leakage to the lateral watching area is effectively reduced, and meanwhile the display definition and the sound definition of the audience area are kept.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and in particular to a television control method, a television control device, a computing device, a computer-readable storage medium, and a television system. Background Technology

[0002] With the maturation of the smart home ecosystem and the diversification of living space formats (such as shared apartments, open-plan living rooms, and small apartments), users' demands for personalized experiences and privacy protection in television products have significantly increased. However, current mainstream television products have obvious shortcomings in privacy protection. Therefore, improving the privacy protection of television products is an urgent technical problem to be solved. Summary of the Invention

[0003] In view of the above, this application provides a television control method, a television control device, a computing device, a computer-readable storage medium, and a television system to solve at least one problem existing in the prior art.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows: In a first aspect, embodiments of this application provide a television control method, the method comprising: Acquire audience location information and environmental conditions through sensor components; Based on the audience location information, the viewing angle range and sound field distribution of the displayed content are dynamically adjusted so that the audiovisual content mainly covers the area where the audience is located. Automatically switch privacy protection mode based on the environmental conditions; The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

[0005] In one optional implementation, the viewing angle range for dynamically adjusting the displayed content includes: The control is set in a variable grating layer in front of the display panel to increase light scattering or change polarization characteristics in the non-viewer direction, thereby reducing lateral visibility; And / or, control the active local dimming backlight module to simultaneously reduce backlight brightness in the side-viewing area; And / or, reduce the display contrast of the side-viewing area and insert perturbation stripes to interfere with side-viewing.

[0006] In one alternative implementation, the adjustment of the sound field distribution includes: Near-field beamforming using a loudspeaker array; Focus the sound field energy on the audience's head area; Generate phase-cancelling sound waves in non-audience areas to reduce sound leakage.

[0007] In one alternative implementation, the environmental state includes nighttime, and when the environmental state is determined to be nighttime, low-frequency standing waves are automatically suppressed to reduce interference with the surrounding environment.

[0008] In an optional implementation, the environmental state also includes a sleep state. When a sleep state is detected, the low-frequency components of the audio are reduced and the system switches to a hybrid mode. In the hybrid mode, voice content is provided by a bone conduction micro-vibrator built into the remote control, and the speaker array retains some ambient sound effects to maintain a sense of space.

[0009] In an alternative embodiment, the sensor assembly includes a camera and an ambient light sensor, and the method further includes: The camera detects and identifies mobile devices within the viewing area; When the mobile device is detected to be in a raised position with the lens facing the screen, and the ambient light sensor detects a sudden change in light signal that matches the pre-flash characteristics of the flash, it is determined to be a shooting action. When a filming activity is detected, a light scrambling code is superimposed on the corresponding screen area, and dynamic micro-shaking processing is performed on the preset subtitle area to prevent unauthorized filming.

[0010] In an alternative embodiment, the sensor assembly includes a depth sensor and a microphone array, and the detection of a sleep state includes: The subtle movements of the human body contour are captured by a depth sensor. Analyze breathing rhythm patterns using a microphone array; Using computer vision algorithms to identify closed-eye states and the duration of body stillness; When the following conditions are met simultaneously: the amplitude of micro-movement is less than the threshold, a regular breathing rhythm is detected, the eyes are closed, and the duration of body stillness exceeds the set time, the state is determined to be a sleep state.

[0011] In one alternative embodiment, the sensor assembly includes a microphone array and a camera, and the acquisition of the environmental state includes: detecting the ambient noise level through the microphone array and identifying the number of viewers in the viewing area through the camera.

[0012] In one optional implementation, the privacy protection modes include a nighttime anti-harassment mode, a baby-by-side mode, a rental house anti-peeping mode, and a meeting privacy mode; In the nighttime anti-interference mode, the screen brightness is reduced, blue light is suppressed, and the sound field focusing range is narrowed to the area around the viewer's head, while suppressing low-frequency standing waves. In the infant's side mode, the maximum audio output volume is limited and sudden high-pitched sounds are suppressed; In the aforementioned anti-peeping mode for rental housing, the viewing angle is narrowed, the sound field is focused but ambient sound is preserved; In the private meeting mode, the viewing angle is further narrowed, the sound field is fully focused, and a scrambled watermark is superimposed on the screen.

[0013] In an optional embodiment, the method further includes: recording the audience's historical viewing location data and time period; predicting the audience's possible viewing location and time next time based on the historical data; and preloading the corresponding sound field parameters and grating configuration parameters before the prediction time.

[0014] Secondly, embodiments of this application provide a television control device, the device comprising: The acquisition module is used to acquire audience location information and environmental conditions through sensor components; The adjustment module is used to dynamically adjust the viewing angle range and sound field distribution of the displayed content based on the audience's location information, so that the audiovisual content mainly covers the area where the audience is located. The mode switching module is used to automatically switch the privacy protection mode according to the environmental conditions. The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

[0015] Thirdly, embodiments of this application provide a computing device, the computing device comprising: a storage component, a communication bus, and a processing component, wherein: The storage component is used to store television control method programs; The communication bus is used to enable communication between the storage component and the processing component; The processing unit is used to execute a television control method program to implement the steps of any of the methods described above.

[0016] Fourthly, embodiments of this application provide a computer-readable storage medium storing an executable program, which, when executed by a processor, implements the steps of any of the methods described above.

[0017] Fifthly, embodiments of this application provide a television system, including: A television set, including a display panel, speaker array, and sensor components; The television control device described above.

[0018] In an alternative embodiment, the television set further includes: A variable grating layer is placed in front of the display panel to dynamically adjust the light scattering and polarization characteristics; And / or, an active local dimming backlight module; used to synchronously reduce backlight brightness in the side-viewing area, and can work in conjunction with a variable raster layer.

[0019] In one alternative embodiment, the loudspeaker array is a distributed addressable micro loudspeaker array, comprising at least eight independently controlled micro loudspeaker units for performing near-field beamforming and generating destructive sound waves.

[0020] In one alternative implementation, the sensor assembly includes: Cameras and depth sensors are used to determine the audience's position and direction of gaze; and / or microphone arrays for ambient noise detection and breathing rhythm recognition; And / or an ambient light sensor, used to assist in triggering night mode.

[0021] In an optional embodiment, the television system further includes a remote control, which includes an ultra-wideband positioning module (UWB), an inertial measurement unit (IMU) sensor, and a bone conduction micro-vibrator; when the system switches to hybrid mode, the bone conduction micro-vibrator works in conjunction with a speaker array to output audio.

[0022] In one optional embodiment, the variable grating layer is an electro-controlled liquid crystal grating layer, comprising multiple independently controlled liquid crystal cells; it maintains high transmittance when a high voltage is applied, and increases scattering to reduce lateral visibility when a low voltage is applied.

[0023] In one alternative embodiment, the television set further includes a low-power coprocessor that continues to operate when the television set is in standby or hibernation mode.

[0024] The television control method, television control device, computing device, computer-readable storage medium, and television system provided in this application include: acquiring viewer location information and environmental conditions through sensor components; dynamically adjusting the viewing angle range and sound field distribution of the displayed content based on the viewer location information, so that the audiovisual content mainly covers the area where the viewer is located; and automatically switching the privacy protection mode according to the environmental conditions; wherein the adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism to form an integrated privacy protection. As can be seen, the television control method, television control device, computing device, computer-readable storage medium, and television system of this application embodiment acquire the viewer's position and environmental status in real time through sensor components, providing a basis for dynamic adjustment; based on the viewer's position, the viewing angle range and sound field distribution are adjusted synchronously to concentrate the audiovisual content covering the viewer area, effectively reducing content leakage to the side viewing area, while maintaining the display clarity and sound clarity of the viewer area; the privacy protection mode is automatically switched according to the environmental status to avoid frequent manual operation by the viewer; by incorporating the viewing angle adjustment and sound field control into a collaborative working mechanism, the problem of fragmented protection effects caused by the independence of visual anti-peeping and audio control in the prior art is solved, thereby effectively suppressing the spread of audiovisual content to non-target areas while ensuring the basic audiovisual experience of the main viewer, and improving the adaptive capability of the privacy protection strategy.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A schematic flowchart of the television control method provided in Embodiment 1 of this application; Figure 2 A schematic diagram illustrating the positions and interaction between the television and the viewer in the television control method provided in Embodiment 1 of this application; Figure 3 This is a schematic diagram illustrating the scheduling process in the television control method provided in Embodiment 1 of this application; Figure 4 Schematic diagram of the structure of the television control device provided in Embodiment 2 of this application Figure 1 ; Figure 5 Schematic diagram of the structure of the television control device provided in Embodiment 2 of this application Figure 2 ; Figure 6 This is a schematic diagram of the structure of the computing device provided in Embodiment 3 of this application; Figure 7 This is a schematic diagram of the structure of a television system provided in Embodiment 5 of this application.

[0027] Explanation of reference numerals in the attached figures: 40. Television control device; 41. Acquisition module; 42. Adjustment module; 43. Mode switching module; 44. Preloading module; 45. Locking module; 46. Security module; 50. Computing device; 51. Storage unit; 52. Communication bus; 53. Processing unit; 54. Input device; 55. Output device; 56. External communication interface; 81. Housing; 83. Display panel; 84. Speaker array; 85. Sensor assembly; 86. Remote control; 87. Local storage unit. Detailed Implementation

[0028] To make the technical solutions and beneficial effects of this application more obvious and understandable, the technical solutions in the embodiments of this application are clearly and completely described below by listing specific embodiments. Obviously, the embodiments of this application are not exhaustive, and the described embodiments are only some embodiments of this application, not all embodiments.

[0029] The exemplary embodiments disclosed in this application will now be described in more detail with reference to the accompanying drawings, providing detailed structures and steps to illustrate the technical solution of this application. Note that the drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for the purpose of describing particular embodiments only and should not be construed as limiting the technical solutions of this application.

[0031] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. To clearly define the inventive concept of this application and avoid confusion with its content, technical features well-known in the art and conventionally understood by those skilled in the art are not elaborated upon. Specifically, this document does not fully list all features of actual embodiments, nor does it provide a detailed description of well-known functions and structures.

[0032] The inventors of this application discovered during research and development that current mainstream television products have significant limitations in privacy protection: some models use fixed physical privacy films, which can limit the lateral viewing angle, but cannot dynamically adjust according to the actual number of viewers, easily causing a fragmented viewing experience in shared scenarios; other products introduce basic directional audio technology, optimizing the sound field directivity through speaker layout, but this only alleviates the problem of sound leakage and has no substantial effect on preventing screen content from being viewed. More significantly, in existing solutions, visual control and audio control functions operate independently, lacking comprehensive perception and response capabilities to dynamic environmental changes (such as viewer movement, surrounding people's activities, changes in ambient light, etc.). This leads to a dilemma for users in actual use: enabling strong privacy mode compromises the viewing experience, while disabling privacy functions poses a risk of content leakage; and frequent manual switching between different settings is cumbersome and makes it difficult to achieve "seamless" privacy protection.

[0033] Specifically, fixed physical privacy films include optical films attached to the screen surface. Their microprism or venetian blind structure allows light to be transmitted only from the main viewing angle and scattered laterally. They are passive privacy measures and cannot be adjusted according to changes in the scene.

[0034] Therefore, through further research and development, the inventors proposed the following technical solution. Example 1

[0035] This application provides a television control method. The method can be implemented by a computer, which can be a computing device configured with a processor. The processor can be a general-purpose processor, such as a CPU; an integrated system, such as a system-on-a-chip (SoC); an embedded control core, such as a microcontroller unit (MCU); a dedicated signal processing unit, such as a digital signal processor (DSP); a graphics rendering core, such as a graphics processing unit (GPU); a programmable logic device, such as an application-specific integrated circuit (ASIC); a field-programmable gate array (FPGA); other programmable logic devices, discrete gates, transistor logic devices, or discrete hardware components, etc. (Reference) Figure 1 The method includes: Step 101: Obtain audience location information and environmental status through sensor components; Step 102: Based on the audience's location information, dynamically adjust the viewing angle range and sound field distribution of the displayed content so that the audiovisual content mainly covers the area where the audience is located; Step 103: Automatically switch privacy protection mode according to environmental conditions; The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

[0036] Here, the sensor components can be a hardware collection integrating multiple sensing units to collect spatial and environmental data. Audience position information refers to the audience's three-dimensional coordinates relative to the screen, gaze direction, and head posture; environmental conditions encompass information such as light intensity, ambient noise, human activity, and the presence of special objects (e.g., infants). Dynamic adjustment refers to the system continuously optimizing parameters based on real-time data, switching without fixed thresholds. The viewing angle range can be the effective viewing angle interval for maintaining high-definition screen content; sound field distribution can be the energy distribution pattern of sound pressure in space. A collaborative working mechanism can be that visual control commands and sound field control commands are generated by the same decision logic, sharing sensor data streams and state judgment results, avoiding policy conflicts between independent modules. Integrated privacy protection emphasizes the organic unity of audiovisual protection measures at the temporal, spatial, and policy levels.

[0037] Mainly covering the area where the audience is located means adjusting the viewing angle range and sound field distribution of the displayed content to cover the area where the audience is located, while rarely covering areas outside the audience's location.

[0038] Furthermore, conflict resolution logic can be added to the collaborative working mechanism. When the visual module requires a significant narrowing of the viewing angle and the sound field module detects multiple sound sources, the system prioritizes the audience area experience and guides people to adjust their positions through faint prompts, achieving a dynamic balance between experience and privacy.

[0039] The television control method of this application embodiment acquires the viewer's position and environmental status in real time through sensor components, providing a basis for dynamic adjustment; it synchronously adjusts the viewing angle range and sound field distribution based on the viewer's position, so that the audiovisual content is concentrated to cover the viewer area, effectively reducing content leakage to the side viewing area, while maintaining the display clarity and sound clarity of the viewer area; it automatically switches the privacy protection mode according to the environmental status, avoiding frequent manual operation by the viewer; by incorporating the viewing angle adjustment and sound field control into a collaborative working mechanism, it solves the problem of fragmented protection effects caused by the independence of visual anti-peeping and audio control in the prior art, thereby effectively suppressing the spread of audiovisual content to non-target areas while ensuring the basic audiovisual experience of the main viewer, and improving the adaptive capability of the privacy protection strategy.

[0040] Specifically, synchronized adjustment refers to the coordinated updating of viewing angle and sound field parameters within the same control cycle, ensuring that the spatial positions of visual and auditory focus are consistent. Content leakage refers to the screen image being captured by an unauthorized viewing angle or sound energy diffusing into non-target areas. Fragmented protection refers to the situation where enabling the privacy screen alone completely prevents viewers from viewing from the side, or enabling directional audio alone results in the image being visible but the sound leaking out, with the two failing to provide complementary protection. Adaptive capability refers to the system automatically matching the optimal privacy strategy based on environmental changes without viewer intervention.

[0041] In other embodiments of this application, the viewing angle range for dynamically adjusting the displayed content includes: The control is set in a variable grating layer in front of the display panel to increase light scattering or change polarization characteristics in the non-viewer direction, thereby reducing lateral visibility; And / or, control the active local dimming backlight module to simultaneously reduce backlight brightness in the side-viewing area; And / or, reduce the display contrast of the side-viewing area and insert perturbation stripes to interfere with side-viewing.

[0042] Here, the variable grating layer can be a functional layer located on the outermost surface of the display panel. Its specific stacked structure, from the outside to the inside, includes the outermost screen layer, an electrochromic polarization adjustment layer, a liquid crystal tunable grating layer, a traditional polarizer, and an LCD or OLED display panel. This structure is composed of electro-optical materials and is controlled by the coordinated regulation of the electrochromic polarization adjustment layer and the liquid crystal tunable grating layer. By applying different voltages to regulate its microstructure, the emitted light from the non-viewer direction is scattered or its polarization state is changed, thereby reducing the image contrast and clarity at the side viewing angle.

[0043] Active local dimming backlight modules divide the backlight into multiple independent light-controlling zones, each with individually adjustable brightness. They simultaneously reduce backlight brightness in side-viewing areas and can be implemented independently. This can also be combined with the optical scattering effect of a variable grating layer to create dual suppression, enhancing the privacy protection. Reducing the display contrast in the side-viewing area involves using image processing algorithms to weaken the difference in brightness between pixels in that area. Inserting micro-perturbation stripes involves superimposing high-frequency texture patterns, imperceptible to the human eye but capable of interfering with the imaging of the camera device, into the side-viewing area, further improving the anti-spy camera capability. The use of "and / or" indicates that the above three techniques can be implemented individually or in any combination to adapt to different hardware configurations and scenario requirements.

[0044] Furthermore, the variable grating layer adopts a partitioned independent driving strategy. Based on the position of the lateral observation point identified by the sensor, scattering control is applied only to the corresponding area, maintaining high transmittance in the main viewing area and reducing overall power consumption.

[0045] Furthermore, the frequency and amplitude of the perturbation stripes can be adaptively adjusted according to the ambient light intensity, increasing the scrambling intensity in strong light environments and decreasing it in weak light environments to avoid perception from the main viewing angle.

[0046] In other embodiments of this application, the adjustment of the sound field distribution includes: Near-field beamforming using a loudspeaker array; Focus the sound field energy on the audience's head area; Generate phase-cancelling sound waves in non-audience areas to reduce sound leakage.

[0047] Here, the loudspeaker array can be composed of multiple miniature loudspeaker units arranged in a specific geometric layout. Near-field beamforming refers to creating a concentrated area of ​​sound pressure energy near the audience's head by precisely controlling the phase and amplitude of the sound waves output by each unit. Focusing the sound field energy at the audience's head position ensures clear and intelligible speech while reducing sound energy diffusion into the surrounding space. Generating destructive sound waves in non-audience areas refers to using the principle of sound wave interference to make the sound waves output by multiple loudspeaker units out of phase and matched in amplitude in a designated area, forming a sound pressure cancellation point, effectively suppressing sound propagation into non-target areas. This process requires real-time calculation of the audience's position and the room's acoustic reflection characteristics, dynamically updating the driving parameters of each unit.

[0048] Furthermore, the computer can have a built-in sound field calibration module that emits test sound signals when used for the first time or when the environment changes. It then uses a microphone array to receive reflected signals and constructs a room impulse response model, thereby optimizing the generation parameters of the destructive sound waves and improving adaptability to different room structures.

[0049] In some other embodiments of this application, the environmental state includes nighttime, and when the environmental state is determined to be nighttime, low-frequency standing waves are automatically suppressed to reduce interference with the surrounding environment.

[0050] Here, "nighttime" refers to a state where the ambient light sensor detects that the light intensity is consistently below a preset threshold. Low-frequency standing waves refer to the localized increase in sound pressure caused by the reflection and superposition of low-frequency sound waves at the room boundaries, which can easily penetrate walls and interfere with adjacent spaces. Suppressing low-frequency standing waves involves dynamically attenuating the energy of frequency bands in the audio signal that are prone to causing standing waves through digital signal processing algorithms, and combining this with phase modulation of the speaker array to weaken the conditions for standing wave formation, significantly reducing the acoustic interference of nighttime movie viewing on the surrounding environment.

[0051] Furthermore, the suppression of low-frequency standing waves is achieved using adaptive phase cancellation acoustic wave technology, which specifically includes the following steps: During the room measurement phase, the system uses a microphone array to send probe signals, measures the room impulse response, identifies the locations of nodes and anti-nodes of low-frequency standing waves, and generates the room acoustic transfer function matrix. In the phase cancellation source deployment stage, the anti-node cancellation method is adopted. The anti-phase sound source is deployed at the anti-node position of the standing wave. For the low frequency band of 50 Hz to 200 Hz (the wavelength of the sound wave in this band is relatively long and can easily penetrate the wall and cause interference), a small sealed subwoofer is used in conjunction with an active equalizer to generate phase cancellation sound waves. In the real-time adaptive phase, when the system detects movement of people or changes in furniture layout in the room, it automatically re-executes room measurements and updates acoustic parameters. It uses the least mean square algorithm or recursive least squares algorithm to optimize and converge the destructive acoustic wave parameters in real time, ensuring that the standing wave suppression effect remains effective.

[0052] In some other embodiments of this application, the environmental state also includes a sleep state. When a sleep state is detected, the low-frequency components of the audio are reduced and the system switches to a hybrid mode. In the hybrid mode, the voice content is provided by the bone conduction micro-vibrator built into the remote control, and the speaker array retains some ambient sound effects to maintain a sense of space.

[0053] Here, "sleep state" refers to the system's overall assessment that the viewer is in a dormant state with eyes closed, still, and breathing regularly. Reducing low-frequency audio components means attenuating low-frequency components in the audio signal that easily cause vibration perception, reducing interference with the sleeper. The hybrid mode is a collaborative working mode of bone conduction output and air conduction output. The bone conduction micro-vibrator built into the remote control transmits sound directly to the inner ear through the skull via vibration, ensuring that the speech content is clearly audible with almost no leakage; the speaker array retains some ambient sound effects, meaning it outputs attenuated background sounds, ambient sounds, and other non-critical audio, allowing the viewer to still perceive changes in the external environment (such as doorbells or baby crying), maintaining a basic sense of spatial security. In some other embodiments of this application, the sensor components include a camera and an ambient light sensor, and the method further includes: The camera detects and identifies mobile devices within the viewing area; When the mobile device is detected to be in a raised position with the lens facing the screen, and the ambient light sensor detects a sudden change in light signal that matches the pre-flash characteristics of the flash, it is determined to be a shooting action. When a filming activity is detected, a light scrambling code is superimposed on the corresponding screen area, and dynamic micro-shaking processing is performed on the preset subtitle area to prevent unauthorized filming.

[0054] Here, the camera is used to capture visible light or infrared images of the viewing area, and computer vision algorithms are used to identify the outline and posture of the mobile device (such as a smartphone or tablet). "Raised posture" refers to the device's spatial position being higher than the waistline of a seated person, and the angle between the device's long axis and the horizontal plane being greater than a preset angle. "Lens facing the screen" means that the camera module is determined to be pointing towards the TV screen through analysis of the device's outline feature points. An ambient light sensor monitors changes in ambient light intensity in real time. "Light signal mutation matching flash pre-flash characteristics" refers to the detection of short, high-intensity light pulses whose duration and rise slope match common mobile phone flash pre-flash patterns. "Slight scrambling" refers to superimposing low-amplitude, high-frequency random noise patterns onto the corresponding area of ​​the screen; "Dynamic micro-jitter processing" refers to periodically shifting the pixel position of the subtitle area by a small amplitude. Both are designed to be imperceptible to the main viewer, but can significantly reduce the image quality of the shooting device. Here, the preset subtitle area can be a fixed subtitle display area in the TV picture.

[0055] Furthermore, computers can build a database of flash features for common mobile devices, including pre-flash timing and light intensity modes for different brands and models, to improve matching accuracy.

[0056] In other embodiments of this application, the sensor assembly includes a depth sensor and a microphone array, and the recognition of a sleep state includes: The subtle movements of the human body contour are captured by a depth sensor. Analyze breathing rhythm patterns using a microphone array; Using computer vision algorithms to identify closed-eye states and the duration of body stillness; When the following conditions are met simultaneously: the amplitude of micro-movement is less than the threshold, a regular breathing rhythm is detected, the eyes are closed, and the duration of body stillness exceeds the set time, the state is determined to be a sleep state.

[0057] Here, the depth sensor generates a depth image including distance information by emitting infrared light and receiving reflected signals, accurately capturing millimeter-level displacements on the human body surface. Micro-motion amplitude refers to the change in the position of human body contour pixels between consecutive frames, reflecting the degree of body stillness. The microphone array consists of multiple microphone units, using sound source localization and spectrum analysis techniques to extract the periodic characteristics of breathing sounds. Regular breathing rhythm refers to a stable breathing interval that conforms to the physiological range of the human body. Computer vision algorithms perform face detection, eyelid state analysis, and posture tracking on camera images to identify whether the body remains still while the eyes are closed. The preset observation time (e.g., 30 seconds) avoids misinterpreting brief eye closure as sleep. The judgment logic that simultaneously satisfies multiple conditions significantly improves recognition accuracy and effectively reduces the false trigger rate.

[0058] In some other embodiments of this application, the sensor assembly includes a microphone array and a camera, and the acquisition of the environmental state includes: detecting the ambient noise level through the microphone array and identifying the number of viewers in the viewing area through the camera.

[0059] Here, the ambient noise level refers to the background sound intensity collected by the microphone array, which is weighted and calculated to reflect the overall acoustic environment. Audience count identification is achieved through face detection and tracking algorithms in camera images, distinguishing different individuals and counting their numbers in real time. This information is used to dynamically adjust privacy policies: when the number of audience members increases, the visible angle and sound field coverage area are appropriately expanded to ensure a shared experience for multiple people; when the number of people decreases to a single person and lateral movement is detected, the protection area is automatically narrowed to strengthen privacy protection.

[0060] In other embodiments of this application, the privacy protection modes include nighttime anti-harassment mode, baby-on-side mode, rental house anti-peeping mode, and meeting privacy mode; In the nighttime anti-interference mode, the screen brightness is reduced, blue light is suppressed, and the sound field focusing range is narrowed to the area around the viewer's head, while suppressing low-frequency standing waves. In the infant's side mode, the maximum audio output volume is limited and sudden high-pitched sounds are suppressed; In the aforementioned anti-peeping mode for rental housing, the viewing angle is narrowed, the sound field is focused but ambient sound is preserved; In the private meeting mode, the viewing angle is further narrowed, the sound field is fully focused, and a scrambled watermark is superimposed on the screen.

[0061] Here, the Nighttime Anti-Disturbance Mode is designed for low-light environments, reducing screen brightness and blue light content to minimize visual stimulation. The sound field focusing range is narrowed to ensure sound energy is concentrated in a small area near the viewer's head, suppressing low-frequency standing waves to prevent sound waves from penetrating walls and disturbing others. The Baby on the Side Mode uses audio limiting circuitry and dynamic range compression technology to limit the maximum volume within a safe threshold and filter out sudden high-frequency components with steep rising edges in the audio signal, creating a gentle acoustic environment. The Rental Room Anti-Spy Mode is activated when a single person is watching and there is lateral movement. It moderately narrows the viewing angle and sound field range, but retains some ambient sound to prevent the main viewer from feeling isolated, suitable for shared living scenarios. The Meeting Privacy Mode is designed for highly sensitive scenarios such as document presentations, narrowing the viewing angle to an extremely small range, concentrating sound energy entirely on the main viewer, and overlaying a semi-transparent scrambling watermark (such as the word "Confidential") on the screen, making it difficult to obtain clear content even if photographed.

[0062] Specifically, triggering the corresponding privacy protection mode can generate a local notification event. A local notification event refers to pushing encrypted notification information to the user's associated terminal (such as a mobile phone) via Bluetooth Low Energy or a local area network. This function enables 24 / 7 environmental security monitoring.

[0063] In some other embodiments of this application, the method further includes: recording the audience's historical viewing location data and time period; predicting the audience's possible viewing location and time next time based on the historical data; and preloading the corresponding sound field parameters and grating configuration parameters before the prediction time.

[0064] Here, historical viewing location data refers to the sequence of frequently seated coordinates of viewers recorded in the system's local storage unit; time period refers to the date and time information of the viewing. The prediction algorithm, based on time series analysis and location clustering models, infers the high-probability location and time window for viewers' next viewing. Preloading refers to the system's pre-initialization of corresponding sound field calibration parameters, variable raster layer voltage configuration, backlight zone brightness table, etc., several minutes before the predicted time point, ensuring a seamless and flicker-free mode switching process for a truly unobtrusive experience. Note that all historical data is encrypted and stored locally on the device and is not uploaded to any external server (see Data Localization Processing below).

[0065] In some other embodiments of this application, the method further includes: receiving a manual lock command input by the viewer via a remote control to lock the current privacy protection mode parameters; in the locked state, the system maintains the operation of the current parameters, suspends the automatic switching logic based on sensor data, and resumes the adaptive adjustment function after receiving an unlock command.

[0066] Here, the manual lock command is triggered by a dedicated physical button or combination button on the remote control. Upon receiving the command, the system stores all current privacy-related parameters (including viewing angle range, sound field focus point coordinates, backlight zone brightness, grating layer voltage distribution, etc.) in volatile memory and sets the lock flag. During the lock period, sensor data continues to be collected but does not trigger mode switching decisions, ensuring that the privacy policy is not mistakenly adjusted in specific scenarios (such as brief absence from the seat or temporary changes in the environment). The unlock command can be pressed again with the lock button or a specific button pressed and held. The system clears the lock flag and resumes automatic monitoring. This function gives users ultimate control over the privacy policy, enhancing user security and controllability.

[0067] In some other embodiments of this application, the method further includes: processing all personal characteristic data involving the audience on a local device without uploading it to the cloud.

[0068] This refers to data localization, used to protect viewers' personal information.

[0069] Specifically, personal characteristic data includes, but is not limited to: facial feature data, location trajectory data, biometric information, and behavioral habit data.

[0070] Local device processing includes: completing the entire process of data acquisition, processing, storage, and destruction within the local storage unit of the television; the processing does not rely on a network connection, and the raw data and intermediate results do not leave the physical boundaries of the device, ensuring the security and compliance of user privacy information.

[0071] In other embodiments of this application, the television system further includes a low-power coprocessor; the method further includes: The low-power coprocessor is controlled to run continuously when the TV is in standby or hibernation mode, so as to monitor sleep posture characteristics and abnormal sounds through sensor components.

[0072] Here, the low-power coprocessor is an ultra-low-power computing unit independent of the main processor, with low standby power consumption.

[0073] Even after the TV enters standby or sleep mode, the coprocessor continues to run, processing data collected by the sensor components, performing sleep posture characteristic analysis (such as the amplitude of human micro-movements and breathing rhythm) and abnormal sound detection (such as baby crying and sudden impact sounds), thus achieving 24 / 7 environmental safety monitoring. At the same time, it keeps the overall system standby power consumption at an extremely low level, avoiding increased energy consumption caused by frequent wake-ups of the main processor.

[0074] To better understand the television control method of this application's embodiments, the positions and interaction between the television and the viewer in the television control method are briefly described below, such as... Figure 2 As shown, the television set and the viewer are located at opposite ends, while the sensor assembly, variable grating layer, speaker array, and remote control are arranged between them as needed.

[0075] Furthermore, the following section uses diagrams to illustrate the content of the scheduling process, specifically the measures taken to adjust the displayed content and sound field distribution. For example... Figure 3 As shown, the execution scheduling includes visual anti-leakage and sound field control. Visual anti-leakage includes variable gratings and content anti-spyware measures, while content anti-spyware measures include lateral mobile phone detection and dynamic subtitle scrambling. Sound field control includes beamforming and destructive acoustic waves. Example 2

[0076] This application provides a television control device applied to a television system, the television system comprising: (reference) Figure 4 The television control device 40 includes: Module 41 is used to obtain audience location information and environmental status through components; The adjustment module 42 is used to dynamically adjust the viewing angle range and sound field distribution of the displayed content based on the audience location information, so that the audiovisual content mainly covers the area where the audience is located. The mode switching module 43 is used to automatically switch the privacy protection mode according to the environmental state; The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

[0077] In other embodiments of this application, the adjustment module 42 is further configured to: The control is set in a variable grating layer in front of the display panel to increase light scattering or change polarization characteristics in the non-viewer direction, thereby reducing lateral visibility; And / or, control the active local dimming backlight module to simultaneously reduce backlight brightness in the side-viewing area; And / or, reduce the display contrast of the side-viewing area and insert perturbation stripes to interfere with side-viewing.

[0078] Here, the variable grating layer can be a functional layer located on the outermost surface of the display panel. Its specific stacked structure, from the outside in, includes the outermost screen layer, an electrochromic polarization adjustment layer, a liquid crystal tunable grating layer, a traditional polarizer, and an LCD or OLED display panel. This structure, composed of electro-optical materials, is controlled by the coordinated regulation of the electrochromic polarization adjustment layer and the liquid crystal tunable grating layer. By applying different voltages to regulate its microstructure, the emitted light from the non-viewer direction is scattered or its polarization state is changed, thereby reducing the image contrast and clarity from the side viewing angle. The active local dimming backlight module divides the backlight into multiple independent light-controlling areas, each with individually adjustable brightness. It simultaneously reduces the backlight brightness in the side viewing area, forming a dual suppression with the optical scattering effect of the variable grating layer, enhancing the anti-spyware effect. Reducing the display contrast in the side viewing area refers to weakening the difference in brightness between pixels in this area through image processing algorithms. Inserting micro-perturbation stripes refers to superimposing high-frequency texture patterns that are not easily perceived by the human eye but can interfere with the imaging of the shooting device in the side viewing area, further improving the anti-spyware capability. The use of "and / or" indicates that the above three technical methods can be implemented individually or in any combination to adapt to different hardware configurations and scenario requirements.

[0079] Furthermore, the variable grating layer adopts a partitioned independent driving strategy. Based on the position of the lateral observation point identified by the sensor, scattering control is applied only to the corresponding area, maintaining high transmittance in the main viewing area and reducing overall power consumption.

[0080] Furthermore, the frequency and amplitude of the perturbation stripes can be adaptively adjusted according to the ambient light intensity, increasing the scrambling intensity in strong light environments and decreasing it in weak light environments to avoid perception from the main viewing angle.

[0081] In other embodiments of this application, the adjustment module 42 is further configured to: Near-field beamforming using a loudspeaker array; Focus the sound field energy on the audience's head area; Generate phase-cancelling sound waves in non-audience areas to reduce sound leakage.

[0082] Here, the loudspeaker array can be composed of multiple miniature loudspeaker units arranged in a specific geometric layout. Near-field beamforming refers to creating a concentrated area of ​​sound pressure energy near the audience's head by precisely controlling the phase and amplitude of the sound waves output by each unit. Focusing the sound field energy at the audience's head position ensures clear and intelligible speech while reducing sound energy diffusion into the surrounding space. Generating destructive sound waves in non-audience areas refers to using the principle of sound wave interference to make the sound waves output by multiple loudspeaker units out of phase and matched in amplitude in a designated area, forming a sound pressure cancellation point, effectively suppressing sound propagation into non-target areas. This process requires real-time calculation of the audience's position and the room's acoustic reflection characteristics, dynamically updating the driving parameters of each unit.

[0083] Furthermore, the computer can have a built-in sound field calibration module that emits test sound signals when used for the first time or when the environment changes. It then uses a microphone array to receive reflected signals and constructs a room impulse response model, thereby optimizing the generation parameters of the destructive sound waves and improving adaptability to different room structures.

[0084] In other embodiments of this application, the environmental state includes nighttime, and the adjustment module 42 is further configured to: When the environmental condition is determined to be nighttime, low-frequency standing waves are automatically suppressed to reduce interference with the surrounding environment.

[0085] Here, "nighttime" refers to a state where the ambient light sensor detects that the light intensity is consistently below a preset threshold. Low-frequency standing waves refer to the localized increase in sound pressure caused by the reflection and superposition of low-frequency sound waves at the room boundaries, which can easily penetrate walls and interfere with adjacent spaces. Suppressing low-frequency standing waves involves dynamically attenuating the energy of frequency bands in the audio signal that are prone to causing standing waves through digital signal processing algorithms, and combining this with phase modulation of the speaker array to weaken the conditions for standing wave formation, significantly reducing the acoustic interference of nighttime movie viewing on the surrounding environment.

[0086] Furthermore, the suppression of low-frequency standing waves is achieved using adaptive phase cancellation acoustic wave technology, which specifically includes the following steps: During the room measurement phase, the system uses a microphone array to send probe signals, measures the room impulse response, identifies the locations of nodes and anti-nodes of low-frequency standing waves, and generates the room acoustic transfer function matrix. In the phase cancellation source deployment stage, the anti-node cancellation method is adopted. The anti-phase sound source is deployed at the anti-node position of the standing wave. For the low frequency band of 50 Hz to 200 Hz (the wavelength of the sound wave in this band is relatively long and can easily penetrate the wall and cause interference), a small sealed subwoofer is used in conjunction with an active equalizer to generate phase cancellation sound waves. In the real-time adaptive phase, when the system detects movement of people or changes in furniture layout in the room, it automatically re-executes room measurements and updates acoustic parameters. It uses the least mean square algorithm or recursive least squares algorithm to optimize and converge the destructive acoustic wave parameters in real time, ensuring that the standing wave suppression effect remains effective.

[0087] In other embodiments of this application, the environmental state further includes a sleep state, and the mode switching module 43 is further configured to: When a sleep state is detected, the low-frequency components of the audio are reduced and the system switches to a hybrid mode. In this hybrid mode, the main voice content is provided by the bone conduction micro-vibrator built into the remote control, while the speaker array retains some ambient sound effects to maintain a sense of space.

[0088] Here, "sleep state" refers to the system's overall assessment that the viewer is in a dormant state with eyes closed, still, and breathing regularly. "Reducing low-frequency audio components" means attenuating low-frequency components in the audio signal that easily trigger vibration perception, reducing interference with the sleeper. "Hybrid mode" is a collaborative working mode of bone conduction and air conduction output. The bone conduction micro-vibrator built into the remote control transmits sound directly to the inner ear through the skull via vibration, ensuring clear and almost no leakage of speech; the speaker array retains some ambient sound effects, meaning it outputs attenuated background sounds, ambient noise, and other non-critical audio, allowing the viewer to still perceive changes in the external environment (such as doorbells or baby crying), maintaining a basic sense of spatial security.

[0089] In other embodiments of this application, the sensor assembly includes a camera and an ambient light sensor, and the mode switching module 43 is further configured to: The camera detects and identifies mobile devices within the viewing area; When the mobile device is detected to be in a raised position with the lens facing the screen, and the ambient light sensor detects a sudden change in light signal that matches the pre-flash characteristics of the flash, it is determined to be a shooting action. When a filming activity is detected, a light scrambling code is superimposed on the corresponding screen area, and dynamic micro-shaking processing is performed on the preset subtitle area to prevent unauthorized filming.

[0090] Here, the camera is used to capture visible light or infrared images of the viewing area, and computer vision algorithms are used to identify the outline and posture of the mobile device (such as a smartphone or tablet). "Raised posture" refers to the device's spatial position being higher than the waistline of a seated person, and the angle between the device's long axis and the horizontal plane being greater than a preset angle. "Lens facing the screen" means that the camera module is determined to be pointing towards the TV screen through analysis of the device's outline feature points. An ambient light sensor monitors changes in ambient light intensity in real time. "Light signal mutation matching flash pre-flash characteristics" refers to the detection of short, high-intensity light pulses whose duration and rise slope match common mobile phone flash pre-flash patterns. "Slight scrambling" refers to superimposing low-amplitude, high-frequency random noise patterns onto the corresponding area of ​​the screen; "Dynamic micro-jitter processing" refers to periodically shifting the pixel position of the subtitle area by a small amplitude. Both are designed to be imperceptible to the main viewer, but can significantly reduce the image quality of the shooting device. Here, the preset subtitle area can be a fixed subtitle display area in the TV picture.

[0091] Furthermore, computers can build a database of flash features for common mobile devices, including pre-flash timing and light intensity modes for different brands and models, to improve matching accuracy.

[0092] In other embodiments of this application, the sensor assembly includes a depth sensor and a microphone array, and the mode switching module 43 is further configured to: The subtle movements of the human body contour are captured by a depth sensor. Analyze breathing rhythm patterns using a microphone array; Using computer vision algorithms to identify closed-eye states and the duration of body stillness; When the following conditions are met simultaneously: the amplitude of micro-movement is less than the threshold, a regular breathing rhythm is detected, the eyes are closed, and the duration of body stillness exceeds the set time, the state is determined to be a sleep state.

[0093] Here, the depth sensor generates a depth image including distance information by emitting infrared light and receiving reflected signals, accurately capturing millimeter-level displacements on the human body surface. Micro-motion amplitude refers to the change in the position of human body contour pixels between consecutive frames, reflecting the degree of body stillness. The microphone array consists of multiple microphone units, using sound source localization and spectrum analysis techniques to extract the periodic characteristics of breathing sounds. Regular breathing rhythm refers to a stable breathing interval that conforms to the physiological range of the human body. Computer vision algorithms perform face detection, eyelid state analysis, and posture tracking on camera images to identify whether the body remains still while the eyes are closed. The preset observation time (e.g., 30 seconds) avoids misinterpreting brief eye closure as sleep. The judgment logic that simultaneously satisfies multiple conditions significantly improves recognition accuracy and effectively reduces the false trigger rate.

[0094] In other embodiments of this application, the sensor assembly includes a microphone array and a camera, and the mode switching module 43 is further configured to: The ambient noise level is detected by a microphone array, and the number of viewers in the viewing area is identified by a camera.

[0095] Here, the ambient noise level refers to the background sound intensity collected by the microphone array, which is weighted and calculated to reflect the overall acoustic environment. Audience count identification is achieved through face detection and tracking algorithms in camera images, distinguishing different individuals and counting their numbers in real time. This information is used to dynamically adjust privacy policies: when the number of audience members increases, the visible angle and sound field coverage area are appropriately expanded to ensure a shared experience for multiple people; when the number of people decreases to a single person and lateral movement is detected, the protection area is automatically narrowed to strengthen privacy protection.

[0096] In other embodiments of this application, the privacy protection modes include nighttime anti-harassment mode, baby-on-side mode, rental house anti-peeping mode, and meeting privacy mode; In the nighttime anti-interference mode, the screen brightness is reduced, blue light is suppressed, and the sound field focusing range is narrowed to the area around the viewer's head, while suppressing low-frequency standing waves. In the infant's side mode, the maximum audio output volume is limited and sudden high-pitched sounds are suppressed; In the aforementioned anti-peeping mode for rental housing, the viewing angle is narrowed, the sound field is focused but ambient sound is preserved; In the private meeting mode, the viewing angle is further narrowed, the sound field is fully focused, and a scrambled watermark is superimposed on the screen.

[0097] Here, the Nighttime Anti-Disturbance Mode is designed for low-light environments, reducing screen brightness and blue light content to minimize visual stimulation. The sound field focusing range is narrowed to ensure sound energy is concentrated in a small area near the viewer's head, suppressing low-frequency standing waves to prevent sound waves from penetrating walls and disturbing others. The Baby on the Side Mode uses audio limiting circuitry and dynamic range compression technology to limit the maximum volume within a safe threshold and filter out sudden high-frequency components with steep rising edges in the audio signal, creating a gentle acoustic environment. The Rental Room Anti-Spy Mode is activated when a single person is watching and there is lateral movement. It moderately narrows the viewing angle and sound field range, but retains some ambient sound to prevent the main viewer from feeling isolated, suitable for shared living scenarios. The Meeting Privacy Mode is designed for highly sensitive scenarios such as document presentations, narrowing the viewing angle to an extremely small range, concentrating sound energy entirely on the main viewer, and overlaying a semi-transparent scrambling watermark (such as the word "Confidential") on the screen, making it difficult to obtain clear content even if photographed.

[0098] In other embodiments of this application, reference is made to Figure 5 The device further includes a preloading module 44, which is used for: Record the audience's historical viewing location data and time period; predict the audience's possible viewing location and time next time based on the historical data; preload the corresponding sound field parameters and grating configuration parameters before the prediction time.

[0099] Here, historical viewing location data refers to the sequence of frequently seated coordinates of viewers recorded in the system's local storage unit; time period refers to the date and time information of the viewing. The prediction algorithm, based on time series analysis and location clustering models, infers the high-probability location and time window for viewers' next viewing. Preloading refers to the system's pre-initialization of corresponding sound field calibration parameters, variable raster layer voltage configuration, backlight zone brightness table, etc., several minutes before the predicted time point, ensuring a seamless and flicker-free mode switching process for a truly unobtrusive experience. Note that all historical data is encrypted and stored locally on the device and is not uploaded to any external server (see Data Localization Processing below).

[0100] In other embodiments of this application, the device further includes a locking module 45, the locking module 45 being used for: The system receives a manual lock command input by the viewer via remote control and locks the current privacy protection mode parameters. In the locked state, the system maintains the current parameters and suspends the automatic switching logic based on sensor data until it receives an unlock command and resumes the adaptive adjustment function.

[0101] Here, the manual lock command is triggered by a dedicated physical button or combination button on the remote control. Upon receiving the command, the system stores all current privacy-related parameters (including viewing angle range, sound field focus point coordinates, backlight zone brightness, grating layer voltage distribution, etc.) in volatile memory and sets the lock flag. During the lock period, sensor data continues to be collected but does not trigger mode switching decisions, ensuring that the privacy policy is not mistakenly adjusted in specific scenarios (such as brief absence from the seat or temporary changes in the environment). The unlock command can be pressed again with the lock button or a specific button pressed and held. The system clears the lock flag and resumes automatic monitoring. This function gives users ultimate control over the privacy policy, enhancing user security and controllability.

[0102] In other embodiments of this application, the device further includes a security module 46, the security module 46 being used for: All personal data related to the audience is processed locally on the device and is not uploaded to the cloud.

[0103] This refers to data localization, used to protect viewers' personal information.

[0104] Specifically, personal characteristic data includes, but is not limited to: facial feature data, location trajectory data, biometric information, and behavioral habit data.

[0105] Local device processing includes: completing the entire process of data acquisition, processing, storage, and destruction within the local storage unit of the television; the processing does not rely on a network connection, and the raw data and intermediate results do not leave the physical boundaries of the device, ensuring the security and compliance of user privacy information.

[0106] The modules included in this embodiment can be implemented using a processor in a computer; alternatively, they can be implemented using logic circuits in a computer. The processor can be a general-purpose processor, such as a CPU; an integrated system, such as a system-on-a-chip (SoC); an embedded control core, such as a microcontroller unit (MCU); a dedicated signal processing unit, such as a digital signal processor (DSP); a graphics rendering core, such as a graphics processing unit (GPU); a programmable logic device, such as an application-specific integrated circuit (ASIC); a field-programmable gate array (FPGA); or other programmable logic devices, discrete gates, transistor logic devices, or discrete hardware components.

[0107] The descriptions of the apparatus embodiments above are similar to those of the method embodiments above, and have similar beneficial effects. For technical details not disclosed in the embodiments of this application, please refer to the descriptions of the method embodiments in this application for understanding. Example 3

[0108] This application provides a computing device 50, with reference to... Figure 6 The computing device 50 includes: a storage unit 51, a communication bus 52, and a processing unit 53, wherein: The storage component 51 is used to store the television control method program; The communication bus 52 is used to realize the connection and communication between the storage component 51 and the processing component 53. The processing unit 53 is used to execute a television control method program to implement the steps of the method described in Embodiment 1.

[0109] The type or structure of the storage component 51 can be found in the storage medium section below, and will not be repeated here.

[0110] The processing unit 53 can be a general-purpose processor, such as a CPU; an integrated system, such as a system-on-a-chip (SoC); an embedded control core, such as a microcontroller unit (MCU); a dedicated signal processing unit, such as a digital signal processor (DSP); a graphics rendering core, such as a graphics processing unit (GPU); a programmable logic device, such as an application-specific integrated circuit (ASIC); a field-programmable gate array (FPGA); or other programmable logic devices, discrete gates, transistor logic devices, or discrete hardware components.

[0111] In some embodiments, the computing device 50 may further include an input device 54, an output device 55, and an external communication interface 56, which are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0112] In some embodiments, the input device 54 may include, for example, a keyboard, mouse, microphone, etc. The output device 55 may output various information to the outside, including a display, speaker, printer, projector, and communication network and its connected remote output devices, etc. The external communication interface 56 may be wired, such as a standard serial port (RS232), a General-Purpose Interface Bus (GPIB) interface, an Ethernet interface, or a Universal Serial Bus (USB) interface, or it may be wireless, such as wireless network communication technology (WiFi), Bluetooth, etc.

[0113] The description of the above-described 50 embodiments of the computing device is similar to that of the above-described method embodiments, and has similar beneficial effects. For technical details not disclosed in the embodiments of this application, please refer to the description of the method embodiments in this application for understanding. Example 4

[0114] This application provides a computer-readable storage medium storing an executable program, which, when executed by a processor, implements the steps of the method described in Embodiment 1.

[0115] Exemplary examples show that a computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A computer-readable storage medium is a tangible device capable of holding and storing instructions for use by an instruction execution device. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), flash memory, compact disc read-only memory (CD-ROM), digital versatile discs (DVDs), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combinations thereof. The RAM includes: Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).

[0116] The ROM includes: Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and Electrically Erasable Programmable Read-Only Memory (EEPROM).

[0117] The description of the computer-readable storage medium embodiments above is similar to the description of the method embodiments above, and has similar beneficial effects. For technical details not disclosed in the embodiments of this application, please refer to the description of the method embodiments in this application for understanding. Example 5

[0118] This application provides a television system, with reference to... Figure 7 The television system includes: A television set, including a display panel 83, a speaker array 84, and a sensor assembly 85; The television control device 40 described in Embodiment 2.

[0119] Here, the television system is a complete product system consisting of television hardware and dedicated control logic. The television set serves as the physical carrier, with its display panel 83 used to present image content, which can employ liquid crystal display or organic light-emitting diode technology; the speaker array 84 is responsible for audio output; and the sensor component 85 integrates multiple sensing units for real-time acquisition of dynamic data such as viewer position, ambient light, and sound.

[0120] The television control device 40 described in Embodiment 2 refers to the dedicated control unit defined above. It connects to the television via a hardware interface, uniformly receives sensor data streams, and generates display and audio coordinated control commands. This architecture decouples the control logic from the display hardware, facilitating modular design, independent upgrades, and fault isolation.

[0121] Specifically, the TV control device 40 can be integrated on the TV motherboard or deployed externally via a standard communication interface, supporting aftermarket installation and compatibility with next-generation products.

[0122] Specifically, the television set also includes a housing 81, a display panel 83 is mounted on one end of the housing 81, the television mainboard is located inside the housing 81, and the television control device 40 can be integrated onto the television mainboard.

[0123] In other embodiments of this application, the television set further includes: A variable grating layer is disposed in front of the display panel 83 to dynamically adjust the light scattering and polarization characteristics; And / or, an active local dimming backlight module; used to synchronously reduce backlight brightness in the side-viewing area, and can work in conjunction with a variable raster layer.

[0124] Here, the variable grating layer is an optical functional layer attached to the outermost surface of the display panel 83. For its specific structure and function, please refer to the description in Embodiment 1.

[0125] The use of "and / or" indicates that the two hardware configurations mentioned above can be implemented individually or in combination to suit different product positioning and cost structures.

[0126] In some other embodiments of this application, the loudspeaker array 84 is a distributed addressable micro loudspeaker array 84, including at least 8 independently controlled micro loudspeaker units for performing near-field beamforming and generating destructive sound waves.

[0127] The Distributed Addressable Miniature Speaker Array 84 refers to a hardware collection composed of multiple miniature speaker units arranged in a specific spatial geometry. Each unit has an independent address and drive circuit, and can be individually addressed and parameter-controlled by the control system. The design, including at least eight independently controlled miniature speaker units, ensures that the sound field beamforming has sufficient spatial resolution and controllability to meet the requirements for precise near-field sound field construction. Near-field beamforming refers to constructing a concentrated area of ​​sound pressure energy in the near-field region near the audience's head by precisely controlling the phase and amplitude of the sound waves output by each unit; generating destructive sound waves refers to causing the sound waves output by multiple units to interfere and cancel each other out in the non-audience area, effectively suppressing sound leakage into the lateral space.

[0128] Furthermore, the array layout can be adaptively designed according to the shape of the TV bezel (such as curved or straight), optimizing the uniformity of sound field coverage and installation compatibility.

[0129] In other embodiments of this application, the sensor assembly 85 includes: Cameras and depth sensors are used to determine the audience's position and direction of gaze; and / or microphone arrays for ambient noise detection and breathing rhythm recognition; And / or an ambient light sensor, used to assist in triggering night mode.

[0130] Here, sensor component 85 is an integrated collection of various sensing hardware. A camera is used to capture visible light or infrared images, combining them with computer vision algorithms to identify human position and facial orientation; a depth sensor generates a depth map by emitting and receiving infrared light signals, accurately acquiring the viewer's three-dimensional spatial coordinates and gaze direction. A microphone array, composed of multiple microphone units, detects ambient noise levels through sound source localization and spectrum analysis technology, and extracts the periodic characteristics of breathing sounds for sleep state recognition. An ambient light sensor monitors changes in ambient light intensity in real time, providing objective evidence for the automatic triggering of night mode. The use of "and / or" indicates that the sensor configuration is flexible, allowing the product to choose between a basic configuration or a full-featured high-end configuration based on its positioning, balancing cost control and functional completeness.

[0131] In other embodiments of this application, the television system further includes a remote control 86, which includes an ultra-wideband positioning module (UWB), an inertial measurement unit (IMU) sensor, and a bone conduction micro-vibrator; when the system switches to a hybrid mode, the bone conduction micro-vibrator and the speaker array 84 work together to output audio.

[0132] Here, the remote control 86 can be an intelligent remote control device with sensing and interactive capabilities. The Ultra Wideband (UWB) positioning module uses nanosecond-level pulse signals to achieve centimeter-level high-precision indoor positioning, assisting in determining the real-time spatial position of the remote control 86 holder, i.e., the main viewer. The Inertial Measurement Unit (IMU), integrating an accelerometer and gyroscope, is used to detect the attitude changes and motion trajectory of the remote control 86, assisting in judging the user's interactive intentions. Bone conduction micro-vibrators transmit sound directly through the skull to the inner ear via vibration, handling the main voice output in mixed mode to ensure audio privacy; the speaker array 84 synchronously outputs attenuated environmental sound effects, maintaining the user's spatial awareness of the external environment. The two work together to achieve a balance between private voice transmission and environmental awareness.

[0133] Furthermore, the remote control 86 can be equipped with a built-in low-power Bluetooth module to establish a stable connection with the TV, reducing communication power consumption; the vibration intensity of the bone conduction micro-vibrator can be adaptively adjusted according to the ambient noise level to ensure that the voice is clear and intelligible without disturbing others.

[0134] In some other embodiments of this application, the variable grating layer is an electro-controlled liquid crystal grating layer, comprising multiple independently controlled liquid crystal cells; it maintains high transmittance when a high voltage is applied, and increases scattering to reduce lateral visibility when a low voltage is applied.

[0135] An electro-controlled liquid crystal grating layer is a specific implementation of a variable grating layer, consisting of an array of multiple independently addressable liquid crystal cells. Each liquid crystal cell is filled with nematic liquid crystal material, whose molecular alignment changes with the applied voltage. When a high voltage is applied, the liquid crystal molecules align in an orderly manner along the electric field direction, resulting in minimal scattering of light as it passes through, maintaining high transmittance and image clarity at the primary viewing angle. When a low voltage is applied, the liquid crystal molecules are in a disordered state, causing significant scattering of light as it passes through, reducing contrast and visibility at side viewing angles. This design supports regional fine-tuning, applying scattering control only to areas outside the viewer's perspective, while maintaining optimal display performance in the viewer's perspective area, balancing privacy protection and viewing experience.

[0136] In other embodiments of this application, the television set further includes a low-power coprocessor that continues to operate in standby or hibernation mode to monitor sleep posture characteristics and abnormal sounds via sensor assembly 85.

[0137] The low-power coprocessor is a dedicated computing unit independent of the main processor, employing an ultra-low-power architecture design with low standby power consumption. Even after the TV enters standby or sleep mode, the coprocessor continues to operate, processing data collected by sensor component 85, performing sleep posture feature analysis (such as the amplitude of micro-movements and breathing rhythm) and abnormal sound detection (such as infant crying and sudden impact sounds), achieving 24 / 7 environmental safety monitoring. This is particularly suitable for home scenarios with infants or the elderly, providing humanistic care while ensuring privacy. Simultaneously, it keeps the overall system standby power consumption at an extremely low level, avoiding increased energy consumption caused by frequent wake-ups of the main processor.

[0138] Furthermore, the low-power coprocessor can integrate a dedicated neural network accelerator to efficiently run a lightweight sleep recognition model; its operating sensitivity can be dynamically configured by the main processor to set the wake-up threshold, balancing monitoring reliability and power consumption performance.

[0139] In some other embodiments of this application, the television set further includes a local storage unit 87, in which all viewer data is processed only in the local storage unit 87 and is not uploaded to the cloud.

[0140] Here, the local storage unit 87 can be an encrypted non-volatile storage chip built into the television set, used to securely store sensitive content such as the viewer's facial feature vectors, location trajectory sequences, biometric information, and behavioral habit data. All data processing flows, including collection, analysis, storage, and destruction, are completed locally on the television set, without relying on a network connection. The raw data and intermediate calculation results do not leave the physical boundaries of the device, fundamentally eliminating the risk of privacy data leakage and cloud misuse, and complying with the security specifications of data minimization and localized processing.

[0141] The description of the television system embodiments above is similar to the description of the method embodiments above, and has similar beneficial effects. For technical details not disclosed in the embodiments of this application, please refer to the description of the method embodiments in this application for understanding.

[0142] It should be noted that the various embodiments provided in this application belong to the same concept; the technical features in the technical solutions described in each embodiment can be arbitrarily combined to form new embodiments without conflict.

[0143] It should be noted that the various embodiments or implementation methods in this document can be described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. It should be understood that in the various embodiments of this application, the embodiment numbers are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments.

[0144] Understandably, without conflict, the technical features in the technical solutions described in each embodiment can be arbitrarily combined to form new embodiments. For example, each structure in each embodiment can be implemented as an independent embodiment, and the structures can be arbitrarily combined; some or all of the structures in different embodiments can be arbitrarily combined. Each step in each embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined; the order of the steps can be arbitrarily interchanged; some or all of the steps in different embodiments can be arbitrarily combined. Furthermore, regarding the table in the embodiments, each element, each row, or each column in the table can be implemented as an independent embodiment.

[0145] In this document, when the terms "embodiment," "implementation," or "example" are used, it means that the specific features described in connection with these implementations or examples are included in at least one implementation, embodiment, or example of this application. It should be noted that the illustrative expressions of the above terms do not necessarily refer to the same implementation, embodiment, or example. Furthermore, the specific features described, such as structures or steps, can be appropriately combined in any one or more implementations, embodiments, or examples.

[0146] In some embodiments, prefixes such as "first" and "second" are used merely to distinguish different descriptive objects and do not impose restrictions on the position, order, priority, or value of the descriptive objects. The description of the descriptive objects is given in the context of the embodiments, and the use of prefixes does not constitute unnecessary restrictions. For example, the numerical value of a descriptive object is not limited by ordinal numbers and can be one or more. Taking "first device" as an example, the numerical value of "device" can be one or more. Furthermore, objects modified by different prefixes can be the same or different. For example, if the descriptive object is "device," then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Describing "first" does not necessarily imply the existence of "second," and discussing "second" does not necessarily imply the existence of "first."

[0147] In some embodiments, unless otherwise stated, elements expressed in the singular form, such as “a,” “the,” “the,” “the,” “the,” “the,” etc., can mean “one and only one,” or “one or more,” “at least one,” etc. For example, when using articles such as “a,” “an,” “the,” etc. in translation, the noun following the article can be understood as either a singular or a plural expression. In some embodiments, “multiple” refers to two or more.

[0148] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0149] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "A in one case, B in another", etc., may include the following technical solutions depending on the situation: in some embodiments, A (A is executed regardless of B); in some embodiments, B (B is executed regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0150] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, selective execution from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0151] In some embodiments, unless otherwise expressly defined, the terms "installation," "connection," "linking," "fixing," "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0152] In some embodiments, specific operational steps, such as flowcharts, are provided. However, it should be noted that these operational steps may be added or removed based on conventional or non-creative effort. The order of steps listed in the embodiments is only one of many possible orders and does not represent the only order. When executed in actual devices, systems, or server products, the steps can be executed either in the order shown in the embodiments or the accompanying drawings, or in parallel in a parallel processor or multi-threaded processing environment.

[0153] The embodiments of this application may be methods, apparatus (systems), and / or computer-readable storage media. The computer-readable storage medium may carry an executable program for causing a processor to implement various aspects of this application. The executable program may be program code written in any combination of one or more programming languages ​​for executing the embodiments of this application. Programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​or other programming languages ​​such as "C". The program code may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer. The network may be a wired network or a wireless network.

[0154] In some embodiments, electronic circuits, such as programmable logic circuits, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), are personalized by utilizing state information of an executable program. These electronic circuits can execute executable programs to implement various aspects of this application.

[0155] The executable program described herein can be downloaded from a computer-readable storage medium to various computing / processing devices, or downloaded via a network to an external computer or external storage device. The network may include copper cables, fiber optic cables, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the executable program from the network and forwards it for storage on a computer-readable storage medium within the respective computing / processing device.

[0156] Various aspects of this application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and / or computer-readable storage media according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by an executable program.

[0157] These executable programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These executable programs can also be stored in a computer-readable storage medium containing instructions that cause a computer, programmable data processing apparatus, and / or other device to operate in a particular manner. Thus, the computer-readable storage medium storing the instructions comprises an article of manufacture including instructions that implement aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram. The executable programs can also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, such that the instructions, which execute on the computer, other programmable data processing apparatus, or other device, implement the functions / actions specified in one or more blocks of the flowchart and / or block diagram. In some embodiments, the disclosed apparatus and methods can be implemented in a variety of other ways. The described device embodiments are for illustrative purposes only. For example, the module division represents only one logical functional division method. In actual implementation, multiple modules or components may be combined or integrated into another system, or certain features may be ignored or specific operations may not be performed. The coupling, direct coupling, or communication connection between the components can be achieved indirectly through interfaces, devices, or modules. The connection form can be electrical, mechanical, or other types.

[0158] In some embodiments, the modules described as separate components may or may not be physically separate; the components shown as modules may or may not be physical modules; these modules may or may not be concentrated in one place or distributed across multiple network modules. In practical applications, some or all of the modules can be selected to achieve the objectives of this embodiment, depending on the requirements.

[0159] In some embodiments, the integration of functional modules is flexible and diverse: they can all be integrated into one processing module, each can be an independent module, or two or more functional modules can be integrated into one module. These integrated modules can be implemented in pure hardware or in a combination of hardware and software functional modules.

[0160] In some embodiments, all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The relevant program can be stored in a computer-readable storage medium, such as ROM, RAM, magnetic disk, or optical disk, and implements the steps of the above method embodiments when executed. If the integrated modules of this application are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Therefore, the technical solutions of the embodiments of this application, in essence or contributing to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and contains several instructions for causing an electronic device (such as a personal computer, server, or network device) to execute all or part of the steps of the methods described in the various embodiments of this application. Therefore, the embodiments of this application are not limited to any specific hardware and software combination.

[0161] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the technical solutions of this application. Various modifications and changes can be made to the above embodiments without departing from the scope of this application. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A television control method, characterized in that, The method includes: Acquire audience location information and environmental conditions through sensor components; Based on the audience location information, the viewing angle range and sound field distribution of the displayed content are dynamically adjusted so that the audiovisual content mainly covers the area where the audience is located. Automatically switch privacy protection mode based on the environmental conditions; The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

2. The television control method according to claim 1, characterized in that, The viewing angle range for dynamically adjusting the displayed content includes: The control is set in a variable grating layer in front of the display panel to increase light scattering or change polarization characteristics in the non-viewer direction, thereby reducing lateral visibility; And / or, control the active local dimming backlight module to simultaneously reduce backlight brightness in the side-viewing area; And / or, reduce the display contrast of the side-viewing area and insert perturbation stripes to interfere with side-viewing.

3. The television control method according to claim 1 or 2, characterized in that, The adjustment of the sound field distribution includes: Near-field beamforming using a loudspeaker array; Focus the sound field energy on the audience's head area; Generate phase-cancelling sound waves in non-audience areas to reduce sound leakage.

4. The television control method according to claim 3, characterized in that, The environmental state includes nighttime. When the environmental state is determined to be nighttime, low-frequency standing waves are automatically suppressed to reduce interference with the surrounding environment.

5. The television control method according to claim 1, characterized in that, The environmental state also includes a sleep state. When a sleep state is detected, the low-frequency components of the audio are reduced and the system switches to a hybrid mode. In the hybrid mode, voice content is provided by the bone conduction micro-vibrator built into the remote control, and the speaker array retains some ambient sound effects to maintain a sense of space.

6. The television control method according to claim 1, characterized in that, The sensor assembly includes a camera and an ambient light sensor, and the method further includes: The camera detects and identifies mobile devices within the viewing area; When the mobile device is detected to be in a raised position with the lens facing the screen, and the ambient light sensor detects a sudden change in light signal that matches the pre-flash characteristics of the flash, it is determined to be a shooting action. When a filming activity is detected, a light scrambling code is superimposed on the corresponding screen area, and dynamic micro-shaking processing is performed on the preset subtitle area to prevent unauthorized filming.

7. The television control method according to claim 5, characterized in that, The sensor assembly includes a depth sensor and a microphone array, and the detection of sleep state includes: The subtle movements of the human body contour are captured by a depth sensor. Analyze breathing rhythm patterns using a microphone array; Using computer vision algorithms to identify closed-eye states and the duration of body stillness; When the following conditions are met simultaneously: the amplitude of micro-movement is less than the threshold, a regular breathing rhythm is detected, the eyes are closed, and the duration of body stillness exceeds the set time, the state is determined to be a sleep state.

8. The television control method according to claim 1, characterized in that, The sensor assembly includes a microphone array and a camera, and the acquisition of the environmental state includes: detecting the ambient noise level through the microphone array and identifying the number of viewers in the viewing area through the camera.

9. The television control method according to claim 1, characterized in that, The privacy protection modes include nighttime anti-harassment mode, baby-by-side mode, rental house anti-peeping mode, and meeting privacy mode; In the nighttime anti-interference mode, the screen brightness is reduced, blue light is suppressed, and the sound field focusing range is narrowed to the area around the viewer's head, while suppressing low-frequency standing waves. In the infant's side mode, the maximum audio output volume is limited and sudden high-pitched sounds are suppressed; In the aforementioned anti-peeping mode for rental housing, the viewing angle is narrowed, the sound field is focused but ambient sound is preserved; In the private meeting mode, the viewing angle is further narrowed, the sound field is fully focused, and a scrambled watermark is superimposed on the screen.

10. The television control method according to claim 1, characterized in that, The method further includes: recording the audience's historical viewing location data and time period; predicting the audience's possible viewing location and time next time based on the historical data; and preloading the corresponding sound field parameters and grating configuration parameters before the prediction time.

11. A television control device, characterized in that, The device includes: The acquisition module is used to acquire audience location information and environmental conditions through sensor components; The adjustment module is used to dynamically adjust the viewing angle range and sound field distribution of the displayed content based on the audience's location information, so that the audiovisual content mainly covers the area where the audience is located. The mode switching module is used to automatically switch the privacy protection mode according to the environmental conditions. The adjustment of the viewing angle range and the adjustment of the sound field distribution are achieved through a collaborative working mechanism, forming an integrated privacy protection.

12. A computing device, characterized in that, The computing device includes: a storage component, a communication bus, and a processing component, wherein: The storage component is used to store television control method programs; The communication bus is used to enable communication between the storage component and the processing component; The processing unit is configured to execute a television control method program to implement the steps of the method as described in any one of claims 1 to 10.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores an executable program that, when executed by a processor, implements the steps of the method as described in any one of claims 1 to 10.

14. A television system, characterized in that, include: A television set, including a display panel, speaker array, and sensor components; The television control device according to claim 11.

15. The television system according to claim 14, characterized in that, The television set also includes: A variable grating layer is placed in front of the display panel to dynamically adjust the light scattering and polarization characteristics; And / or, an active local dimming backlight module; used to synchronously reduce backlight brightness in the side-viewing area, and can work in conjunction with a variable raster layer.

16. The television system according to claim 14, characterized in that, The loudspeaker array is a distributed addressable micro loudspeaker array, comprising at least eight independently controlled micro loudspeaker units for performing near-field beamforming and generating phase-destroying sound waves.

17. The television system according to claim 14, characterized in that, The sensor assembly includes: Cameras and depth sensors are used to determine the audience's position and direction of gaze; and / or microphone arrays for ambient noise detection and breathing rhythm recognition; And / or an ambient light sensor, used to assist in triggering night mode.

18. The television system according to claim 14, characterized in that, The television system also includes a remote control, which includes an ultra-wideband positioning module (UWB), an inertial measurement unit (IMU) sensor, and a bone conduction micro-vibrator; when the system switches to hybrid mode, the bone conduction micro-vibrator works in conjunction with the speaker array to output audio.

19. The television system according to claim 15, characterized in that, The variable grating layer is an electro-controlled liquid crystal grating layer, comprising multiple independently controlled liquid crystal cells; it maintains high transmittance when a high voltage is applied, and increases scattering to reduce lateral visibility when a low voltage is applied.

20. The television system according to claim 14, characterized in that, The television also includes a low-power coprocessor that runs continuously when the television is in standby or sleep mode.

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