Curved display curvature intelligent adjustment device and intelligent display control method

Abstract

The present invention belongs to the technical field of LED curved displays, and in particular relates to an intelligent curvature adjustment device for a curved display screen and a display control method. The intelligent curvature adjustment device for a curved display screen of the present invention comprises: a first arc-shaped component provided with a first connecting portion; a second arc-shaped component provided with a second connecting portion, the second arc-shaped component sliding relative to the first arc-shaped component along a preset circular arc trajectory; a driving mechanism comprising a driving device, an arc-shaped inner gear ring and a driving gear, the driving gear being connected to the first arc-shaped component, the inner gear ring being connected to the second arc-shaped component, the rotation center of the inner gear ring coinciding with the rotation center of the second arc-shaped component, the driving gear being meshed with the inner gear ring; a control circuit being electrically connected to the driving device, the control circuit being used to control the driving device to drive the driving gear to rotate. The present invention can conveniently and quickly adjust the curvature of a curved display screen.

Description

Technical Field

[0001] The present invention relates to the technical field of LED surface display screens, and in particular to an intelligent curvature adjustment device for curved surface display screens and an intelligent display control method. Background Art

[0002] At present, curved LED display screens have been used more and more widely. With the increase in application scenarios, the requirements for curved LED display screens are also getting higher and higher. Since different application scenarios require curved LED display screens with different curvatures, it is often necessary to adjust the outer curved LED display screen conveniently and quickly on site to meet the requirements of the on-site display effect. In this regard, the applicant proposed to use a curvature adjustment device installed on the back of the outer curved LED display screen, and adjust the curvature of the curved LED display screen by adjusting the relative angle between the two parts connecting the curvature adjustment device and the curved LED display screen. However, in some large scenarios, the curved LED display screen is often composed of a large number of LED curved display screen units, and the curvature of each LED curved display screen unit needs to be adjusted. Since the number of LED curved display screen units is large and distributed in different locations, on-site operators cannot quickly adjust the curvature of all LED curved display screen units. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides an intelligent curvature adjustment device for a curved display screen and an intelligent display control method, which are used to solve the technical problem in the prior art that it is difficult for on-site operators to adjust the curvature of a large LED curved display screen conveniently and quickly.

[0004] The technical solution adopted in the present invention is:

[0005] In a first aspect, the present invention provides a device for intelligently adjusting the curvature of a curved display screen, comprising:

[0006] A first arc-shaped component is provided with a first connecting portion;

[0007] a second arc-shaped member having a second connecting portion, the second connecting portion being located at an end of the second arc-shaped member away from the first connecting portion, the second arc-shaped member sliding relative to the first arc-shaped member along a preset arc trajectory, the first connecting portion and the second connecting portion being connected to the display screen unit at different positions on the same display screen unit;

[0008] A drive mechanism comprising a drive device, an arc-shaped inner gear ring, and a drive gear, wherein the drive gear is connected to the first arc-shaped component, the inner gear ring is connected to the second arc-shaped component, the rotation center of the inner gear ring coincides with the rotation center of the second arc-shaped component, the drive gear meshes with the inner gear ring, the drive device is mounted on the second arc-shaped component, and an output end of the drive device is connected to the drive gear;

[0009] The control circuit is electrically connected to the driving device, and the control circuit is used to control the driving device to drive the driving gear to rotate.

[0010] Preferably, the driving device is a servo motor, and the output shaft of the servo motor is connected to the driving gear.

[0011] Preferably, the driving device is a steering gear, and the steering gear includes a planetary gear reducer, and the output end of the planetary gear reducer is connected to the driving gear.

[0012] Preferably, a manual curvature adjustment mechanism is also included, which includes a limit member and a sliding member that can slide relative to the first arc-shaped member, the limit member is connected to the sliding member, and a first limit groove group is provided on the second arc-shaped member, the first limit groove group includes a plurality of first limit grooves arranged at equal intervals along a circular arc trajectory, when the sliding member slides to make the limit member stuck in the first limit groove, the relative angle between the first connection part and the second connection part is locked, and when the sliding member slides to make the limit member disengage from the first limit groove, the relative angle between the second connection part and the first connection part is adjustable.

[0013] Preferably, it also includes a second limit groove group, and the second limit groove group and the first limit groove group are located at different positions in the sliding direction of the sliding part. The second limit groove group includes a number of second limit grooves arranged at equal intervals along the circular arc trajectory. The interval angle between two adjacent second limit grooves in the second limit groove group is the same as the interval angle between two adjacent first limit grooves in the first limit groove group. The second limit groove group and the first limit groove group are staggered by half of the interval angle along the circumferential direction of the second arc-shaped part.

[0014] Preferably, it further comprises an arc-shaped grating ruler and a grating detection head, wherein the grating ruler is mounted on the second arc-shaped component, and the grating detection head is mounted on the first arc-shaped component.

[0015] In a second aspect, the present invention further provides an intelligent display control method for controlling image display on a curved display screen, wherein the curved display screen includes a plurality of display screen units, each display screen unit being equipped with at least one intelligent curvature adjustment device for a curved display screen according to the first aspect, the method comprising the following steps:

[0016] Obtaining the target curvature of each position of the curved display screen;

[0017] Determining a target curvature of each display screen unit according to the target curvature of each position of the curved display screen;

[0018] Determining target adjustment angles of respective curved display screen curvature intelligent adjustment devices installed on respective display screen units according to target curvatures of respective display screen units;

[0019] Determining the target angular position of the output end of the driving device in each intelligent curvature adjustment device for a curved display screen according to the target adjustment angle of each intelligent curvature adjustment device for a curved display screen;

[0020] Control the output end of the driving device in the intelligent adjustment device for the curvature of each curved display screen to rotate to the target angular position.

[0021] Preferably, the controlling the output end of the driving device in each of the intelligent curvature adjustment devices of the curved display screen to rotate to a target angular position further comprises the following steps:

[0022] Obtaining a first curvature deviation threshold and a current curvature of each curved display screen unit;

[0023] For each curved display screen unit, determining a plurality of intermediate curvatures that increase or decrease in sequence according to the first curvature deviation threshold, the current curvature of the curved display screen unit, and the target curvature, and making the curvature deviation value between two adjacent intermediate curvatures equal to the first curvature deviation threshold;

[0024] Obtaining the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position;

[0025] Acquire target display image;

[0026] Acquire, based on the target display image and each intermediate curvature, intermediate display images corresponding to when the curved display screen unit is at each intermediate curvature, and determine, based on the corresponding relationship between the intermediate curvature and the intermediate angular position, a corresponding relationship between each intermediate image and the intermediate angular position;

[0027] The output end of the control driving output device is rotated to each intermediate angular position in sequence, and when it rotates to each intermediate angular position, an intermediate display image corresponding to the intermediate angular position is displayed.

[0028] Preferably, the controlling the output end of the driving device in each of the intelligent curvature adjustment devices of the curved display screen to rotate to a target angular position further comprises the following steps:

[0029] Obtaining a second curvature deviation threshold and a current curvature of each curved display screen unit;

[0030] For each curved display screen unit, determining a plurality of intermediate curvatures that increase or decrease in sequence according to the second curvature deviation threshold, the current curvature of the curved display screen unit, and the target curvature, and ensuring that the curvature deviation between two adjacent intermediate curvatures is equal to the second curvature deviation threshold;

[0031] Obtaining the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position;

[0032] Acquire the brightness value of the curved surface display unit when the curved surface display unit displays the target display image as the target brightness value;

[0033] Obtaining, according to the target brightness value and each intermediate curvature, each brightness value corresponding to the curved display unit at each intermediate curvature as an intermediate brightness value, and determining, according to the corresponding relationship between the intermediate curvature and the intermediate angular position, a corresponding relationship between each intermediate brightness value and the intermediate angular position;

[0034] The output end of the control driving output device is rotated to each intermediate angular position in sequence, and when it is rotated to each intermediate angular position, the brightness value of the curved display unit is adjusted to the intermediate brightness value corresponding to each intermediate angular position.

[0035] Preferably, the step of determining the target adjustment angle of each curved display screen curvature intelligent adjustment device installed on each display screen unit according to the target curvature of each display screen unit comprises the following steps:

[0036] For each display screen unit, obtaining a target curvature K of the display screen unit and a spacing S between two connection positions of the display screen unit and the first connection portion and the second connection portion;

[0037] For each display screen unit, an angle α between the first connecting portion and the second connecting portion connected to the display screen unit is calculated based on the target curvature K of the display screen unit and the distance S between the connection points of the display screen unit and the two connection locations of the first connecting portion and the second connecting portion, and is used as a target adjustment angle of the curved display screen curvature intelligent adjustment device;

[0038] Beneficial Effects: The intelligent curvature adjustment device for a curved display screen of the present invention can utilize a driving device to rotate a driving gear, which in turn drives the inner gear ring meshing therewith to rotate. Since the rotation center of the inner gear ring coincides with the rotation center of the second arc-shaped component, the second arc-shaped component can slide along an arc trajectory relative to the first arc-shaped component under the drive of the inner gear ring, thereby achieving the extension and contraction of the intelligent curvature adjustment device for a curved display screen. Since the first connecting portion and the second connecting portion of the intelligent curvature adjustment device for a curved display screen are respectively connected to different positions of the display screen unit, the angle between the first connecting portion and the second connecting portion changes during the extension and contraction of the intelligent curvature adjustment device for a curved display screen, thereby achieving automatic adjustment of the curvature of the curved display screen. This eliminates the need for the operator to manually adjust the arc length of the adjustment device one by one, thereby significantly improving the adjustment efficiency of the curved display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0040] Figure 1 A schematic diagram of the three-dimensional structure of the intelligent curvature adjustment device for a curved display screen according to the present invention;

[0041] Figure 2 Schematic diagram of the internal structure of the device for intelligently adjusting the curvature of a curved display screen according to the present invention;

[0042] Figure 3 Schematic diagram of the three-dimensional structure of the intelligent curvature adjustment device for a curved display screen with a manual curvature adjustment mechanism according to the present invention;

[0043] Figure 4 Schematic diagram of the three-dimensional structure of the manual curvature adjustment mechanism of the present invention;

[0044] Figure 5 This is a schematic diagram of the internal structure of the intelligent curvature adjustment device for a curved display screen with a manual curvature adjustment mechanism according to the present invention;

[0045] Figure 6 for Figure 5 AA cross-sectional view;

[0046] Figure 7 Schematic diagram of the three-dimensional structure of the second arc-shaped component with two groups of limiting grooves of the present invention;

[0047] Figure 8 Schematic diagram of the first limiting groove group and the second limiting groove group projected onto the same plane along the moving direction of the sliding member of the present invention;

[0048] Figure 9 Schematic diagram of the flow of the intelligent display control method of the present invention;

[0049] Figure 10 Schematic diagram of the flow of the method for determining the target adjustment angle of the present invention;

[0050] Figure 11 Schematic diagram of a method for calculating a target adjustment angle when the curvature of a display unit is positive.

[0051] Figure 12 A schematic diagram of a method for calculating a target adjustment angle when the curvature of a display unit is negative;

[0052] Figure 13 Schematic diagram of the flow of the method for controlling image output during curvature adjustment of the present invention;

[0053] Figure 14 Schematic diagram of the flow of the method for controlling the image brightness value during the curvature adjustment process of the present invention.

[0054] Parts and their numbers in the figure:

[0055] First arc-shaped component 10, first connecting part 11, second arc-shaped component 20, second connecting part 21, driving mechanism 30, servo 31, inner ring gear 32, driving gear 33, manual curvature adjustment mechanism 40, limiting member 41, sliding member 42, cam 43, gasket 44, first limiting groove group 50, first limiting groove 51, second limiting groove group 60, second limiting groove 61, display screen unit 70. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations, elements defined by the phrase "comprising..." do not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements. The embodiments of the present invention and the features thereof may be combined with each other if there is no conflict, and all are within the scope of protection of the present invention.

[0057] Example 1

[0058] like Figure 1 and Figure 2 As shown, the present invention provides an intelligent curvature adjustment device for a curved display screen, which is used to automatically adjust the curvature of a curved display screen. The curved display screen includes a plurality of display screen units 70, each of which can be equipped with at least one intelligent curvature adjustment device for a curved display screen according to this embodiment. To save costs, one intelligent curvature adjustment device for a curved display screen according to this embodiment can be installed for each display screen unit 70. Each display screen unit 70 includes a display surface provided with LED light beads and a back surface opposite the display screen. The intelligent curvature adjustment device for a curved display screen according to this embodiment is installed on the back surface of the display screen unit 70. Each intelligent curvature adjustment device for a curved display screen can adjust the curvature of the corresponding display screen unit 70, and all intelligent curvature adjustment devices for a curved display screen can work together to uniformly adjust the curvature of various local areas of the entire curved display screen. The intelligent curvature adjustment device for a curved display screen according to this embodiment includes a first curved component 10, a second curved component 20, a drive mechanism 30, and a control circuit.

[0059] The intelligent adjustment device of this embodiment mainly comprises a first arc-shaped component 10 and a second arc-shaped component 20 to form an arc-shaped mechanism with adjustable arc length. The first arc-shaped component 10 is provided with a first connecting portion 11; and the outer contour of the first arc-shaped component 10 is substantially arc-shaped.

[0060] The second arc-shaped component 20 is provided with a second connecting portion 21, and the second connecting portion 21 is located at the end of the second arc-shaped component 20 away from the second connecting portion 21. The first connecting portion 11 is located at the end of the first arc-shaped component 10 away from the second connecting portion 21. That is, the first connecting portion 11 and the second connecting portion 21 are located at opposite ends of the intelligent adjustment device for the curvature of a curved display screen in this embodiment. The second arc-shaped component 20 slides relative to the first arc-shaped component 10 along a preset arc trajectory. When the second arc-shaped component 20 slides in a direction close to the first arc-shaped component 10, the arc length of the intelligent adjustment device becomes shorter, and the angle between the first connecting portion 11 and the second connecting portion 21 becomes smaller. When the first arc-shaped component 10 slides in a direction away from the second arc-shaped component 20, the arc length of the intelligent adjustment device becomes shorter, and the angle between the second connecting portion 21 and the first connecting portion 11 becomes larger. In order to enable the second arc-shaped component 20 to slide along an arc trajectory relative to the first arc-shaped component 10, this embodiment further provides an arc-shaped guide groove in the first arc-shaped component 10, and the outer wall of the second arc-shaped component 20 is complementary in shape to the guide groove.

[0061] In order to be able to adjust the curvature of the display screen unit 70, the first connecting portion 11 and the second connecting portion 21 are respectively connected to the display screen unit 70 at different positions of the same display screen unit 70; since the angle between the first connecting portion 11 and the second connecting portion 21 changes with the relative sliding of the second curved component 20 and the first curved component 10, the curvature of the display screen unit 70 changes under the action of the torque of the first connecting portion and the second connecting portion 21 during the sliding of the second curved component 20 relative to the first curved component 10.

[0062] like Figure 2 As shown, in order to automatically adjust the curvature of the display screen unit 70, this embodiment uses a driving mechanism 30 to drive the second arc-shaped component 20 to slide along an arc track relative to the first arc-shaped component 10. Figure 2 and Figure 3 As shown, in this embodiment, the driving mechanism 30 includes a driving device, an arc-shaped inner gear ring 32 and a driving gear 33. The driving gear 33 is connected to the first arc-shaped component 10, and the inner gear ring 32 is connected to the second arc-shaped component 20. The rotation center of the inner gear ring 32 coincides with the rotation center of the second arc-shaped component 20. The driving gear 33 meshes with the inner gear ring 32. The driving device is installed on the second arc-shaped component 20, and the output end of the driving device is connected to the driving gear 33.

[0063] The coincidence of the rotation center of the inner gear ring 32 and the rotation center of the second arc-shaped component 20 means that the rotation center of the inner gear ring 32 and the centers of the arc trajectory when the second arc-shaped component 20 slides along the arc trajectory relative to the first arc-shaped component 10 coincide with each other.

[0064] When the output end of the drive device drives the drive gear 33 to rotate, the drive gear 33 drives the meshing inner ring gear 32 to rotate. Because the rotation center of the inner ring gear 32 coincides with the rotation center of the second arc-shaped component 20 when it slides along a circular arc relative to the first arc-shaped component 10, the inner ring gear 32 can drive the second arc-shaped component 20 to slide along a circular arc relative to the first arc-shaped component 10 during rotation. A control circuit is electrically connected to the drive device, and the control circuit is used to control the drive device to rotate the drive gear 33. The drive device can be a servo motor or a stepper motor. The control circuit can use existing control circuits for controlling servo motors or stepper motors. When the drive device is a servo motor, the output shaft of the servo motor is connected to the drive gear 33. Because the servo motor has a built-in angular position detection device to detect the output angular position of the servo motor, the angle between the first connecting portion 11 and the second connecting portion 21 can be adjusted relatively accurately using the servo motor.

[0065] The control circuit can calculate the angle between the first connecting portion 11 and the second connecting portion 21 of the intelligent adjustment device mounted on the display unit 70 based on the target curvature of the display unit 70 to be adjusted. The control circuit then calculates the target angular position of the output terminal of the drive device based on this angle. Finally, the output terminal of the drive device is controlled to rotate to the target angular position, thereby achieving automatic curvature adjustment. This embodiment not only automatically adjusts the curvature of each display unit 70, but also allows for simultaneous adjustment of the curvature of multiple display units 70. This significantly improves the convenience and efficiency of curvature adjustment compared to manual adjustment.

[0066] The control circuit includes a processor and a memory storing computer program instructions.

[0067] Specifically, the above-mentioned processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can also be configured as one or more integrated circuits implementing the embodiments of the present invention.

[0068] Among them, the memory may include a large-capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the data processing device. In a specific embodiment, the memory is a non-volatile solid-state memory. In a specific embodiment, the memory 402 includes a read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0069] The processor implements the data addressing method of any area in the above embodiments by reading and executing computer program instructions stored in the memory.

[0070] In one example, the control circuit of this embodiment may further include a communication interface and a bus, wherein the processor, the memory, and the communication interface are connected via the bus and communicate with each other.

[0071] The communication interface is mainly used to implement communication between the modules, devices, units and / or equipment in the embodiments of the present invention.

[0072] Bus comprises hardware, software or both, couples the components in the control circuit to each other.For example, and not limitation, bus can comprise accelerated graphics port (AGP) or other graphics bus, enhanced industry standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industry standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations.In suitable cases, bus 410 can comprise one or more buses.Although the embodiment of the present invention describes and shows specific bus, the present invention considers any suitable bus or interconnection.

[0073] like Figure 3 As shown, as an optional but advantageous embodiment, in this embodiment, the driving device is a servo 31, and the servo 31 includes a planetary gear reducer, and the output end of the planetary gear reducer is connected to the driving gear 33. The servo 31 integrates the servo motor and the reducer together, and its structure is compact and easy to install. When the servo 31 is installed on the intelligent adjustment device for the curvature of the curved display screen of this embodiment, it can not only drive the driving gear 33, but also reduce the overall volume of the device. The reducer can be a planetary gear reducer. Since the planetary gear reducer has a high transmission ratio, it can output sufficient torque to drive the driving gear 33 to rotate even when the driving device is very small.

[0074] like Figure 4 and Figure 5 As shown, when a power outage or a control circuit failure occurs and the curvature of each display screen unit 70 cannot be automatically adjusted temporarily, the curvature of each display screen unit 70 can also be temporarily adjusted by a manual adjustment mechanism in this embodiment. Figure 6 As shown, the manual curvature adjustment mechanism 40 includes a limit member 41 and a sliding member 42 that can slide relative to the first arc-shaped member 10, the limit member 41 is connected to the sliding member 42, and a first group of limit grooves is provided on the second arc-shaped member 20, the first limit groove group 50 includes a plurality of first limit grooves 51 arranged at equal intervals along a circular arc trajectory, when the sliding member 42 slides to make the limit member 41 snap into the first limit groove 51, the relative angle between the first connection part 11 and the second connection part 21 is locked, and when the sliding member 42 slides to make the limit member 41 disengage from the first limit groove 51, the relative angle between the second connection part 21 and the first connection part 11 is adjustable.

[0075] In this embodiment, a guide hole can be provided in the first curved member 10. The axis of the guide hole corresponds to the sliding direction of the slider 42. The outer wall of the slider 42 is cylindrical and matches the guide hole. The slider 42 is inserted into the guide hole and slides linearly relative to the first curved member 10 under the constraint of the guide hole.

[0076] The first limiting grooves 51 in the first limiting groove group 50 are arranged at equal intervals along the arc trajectory, which means that the first limiting grooves are arranged on the same arc, and the arc has the same center as the arc trajectory of the first arc component 10 sliding relative to the second arc component 20.

[0077] The first set of limiting grooves can be located above or below the sliding path of the slider 42. When the automatic curvature adjustment function of the intelligent curved display curvature adjustment device is functioning properly, the limiting member 41 is moved with the slider 42 until it is completely disengaged from the first limiting groove 51. This allows the driving device to drive the second curved component 20 to slide freely relative to the first curved component 10. When the automatic curvature adjustment function of the intelligent curved display curvature adjustment device is not functioning properly, the operator is required to manually slide the second curved component 20 relative to the first curved component 10. Once the curvature of the display unit 70 is adjusted, the slider 42 can be slid relative to the first curved component 10, driving the limiting member 41 to engage with the first limiting groove 51 located at the current sliding path of the slider 42, thereby fixing the position between the first curved component 10 and the second curved component 20, thereby maintaining the angle between the first connecting portion 11 and the second connecting portion 21, thereby maintaining the curvature of the display unit 70 at its current state. When the automatic curvature adjustment function of the intelligent curvature adjustment device for a curved display screen returns to normal, the sliding member 42 is moved so that the limiting member 41 moves along with the sliding member 42 to a state where the limiting member 41 is completely disengaged from the first limiting groove 51 .

[0078] To facilitate movement of the slider 42, the manual curvature adjustment mechanism 40 of this embodiment further includes a trigger member comprising a cam 43 and a handle. The cam 43 is rotatably connected to the slider 42 via a rotating shaft. A gasket 44 is provided on the first arcuate component 10, and the outer wall of the cam 43 abuts against the gasket 44. As the cam 43 rotates to different angular positions, the distance between the position where the outer wall of the cam 43 abuts the gasket 44 and the center of rotation of the cam 43 and the slider 42 varies. This allows the trigger member to drive the slider 42 to slide up and down during the rotation of the cam 43.

[0079] When the automatic curvature adjustment function of the intelligent curvature adjustment device for curved display screens can be used normally, the curvature of the display screen unit 70 can be accurately adjusted by relying on the precision of the stepper motor and the servo motor. When the aforementioned manual curvature adjustment mechanism 40 is used to adjust the curvature of the display screen unit 70, the adjustment precision is limited by the spacing angle between two adjacent first limiting grooves 51 in the first limiting groove group 50. The smaller the spacing angle between two adjacent first limiting grooves 51, the higher the precision of the curvature adjustment. However, since the first limiting groove 51 must have a certain width to reliably block the limiting member 41, the spacing angle between two adjacent first limiting grooves 51 cannot be too small. This results in a lower precision of the adjusted curvature. Figure 7 As shown, the manual curvature adjustment mechanism 40 in this embodiment also includes a second limit groove group 60, and the second limit groove group 60 and the first limit groove group 50 are located at different positions in the sliding direction of the sliding member 42, and the second limit groove group 60 includes a plurality of second limit grooves 61 arranged at equal intervals along the arc trajectory, and the interval angle between two adjacent second limit grooves 61 in the second limit groove group 60 is the same as the interval angle between two adjacent first limit grooves 51 in the first limit groove group 50, and the second limit groove group 60 and the first limit groove group 50 are staggered by half of the interval angle along the circumferential direction of the second arc-shaped component 20.

[0080] This embodiment adds a second limiting groove group 60 on the basis of the first limiting groove group 50, and the interval angles between two adjacent limiting grooves in the two limiting groove groups are the same. Figure 8 As shown, assuming that the interval angle between two adjacent first limiting grooves 51 is a1, and the interval angle between two adjacent second limiting grooves 61 is a2, then a1=a2.

[0081] In this embodiment, the two limiting groove groups are disposed at different positions along the sliding direction of the sliding member 42. Furthermore, the second limiting groove group 60 and the first limiting groove group 50 are staggered by half the aforementioned spacing angle along the circumferential direction of the second arc-shaped component 20. That is, the first limiting groove group 50 and the second limiting groove group 60 differ by an angle a3 along the arc trajectory, and a3 = a2 / 2 = a1 / 2.

[0082] When manually adjusting the curvature, the first and second limiting groove groups 50 and 60 can be used in combination. This doubles the angular resolution of manual adjustment. Specifically, the minimum adjustable angle between the first and second connecting portions 11 and 21 increases from a2 to a2 / 2. To adjust the curvature manually, the second curved member 20 can be slid according to the target angle between the first and second connecting portions 11 and 21. The slider 42 can then be moved to engage the limiting member 41 in either the first or second limiting groove 51 or 61.

[0083] Although this embodiment can detect the angular position currently output by the servo motor through the angular position detection device provided by the servo motor, and calculate the relative angle between the first connection part 11 and the second connection part 21 based on the angular position. However, due to reasons such as gear backlash, the relative angle between the first connection part 11 and the second connection part 21 based on the angular position currently output by the servo motor often has a certain error from the actual relative angle between the first connection part 11 and the second connection part 21. To this end, the intelligent adjustment device of this embodiment also includes an arc-shaped grating ruler and a grating detection head, the grating ruler is mounted on the second arc-shaped component 20, and the grating detection head is mounted on the first arc-shaped component 10. When the second arc-shaped component 20 rotates relative to the first arc-shaped component 10, pulses will be generated when the arc grating passes through the grating detection head in sequence. Based on the pulse count, the angle of rotation of the first arc-shaped component 10 relative to the second arc-shaped component 20 can be accurately obtained, thereby accurately obtaining the relative angle between the first connection part 11 and the second connection part 21. The control circuit can control the driving device to adjust the output angular position according to the rotation angle detected by the grating detection head, so that the actual relative angle between the first connecting portion 11 and the second connecting portion 21 meets the curvature adjustment requirement.

[0084] Example 2

[0085] like Figure 9 As shown, this embodiment provides an intelligent display control method for controlling image display on a curved display screen. The curved display screen includes a plurality of display screen units 70, each display screen unit 70 being equipped with at least one intelligent curvature adjustment device for a curved display screen as described in Example 1. The method includes the following steps:

[0086] S1: Obtain the target curvature of each position of the curved display screen;

[0087] The target curvature refers to the most ideal curvature that needs to be achieved in order to meet display requirements.

[0088] S2: determining a target curvature of each display screen unit 70 according to the target curvature of each position of the curved display screen;

[0089] Because the curved display screen is composed of many display screen units 70, the curvature at each location on the curved display screen depends on the curvature of the display screen unit 70 at that location. In this step, the display screen unit 70 at each location can be found first, and the current curvature at that location is used as the target curvature for the display screen unit 70 at that location.

[0090] S3: determining target adjustment angles of respective curved display screen curvature intelligent adjustment devices installed on respective display screen units 70 according to target curvatures of respective display screen units 70;

[0091] The target adjustment angle refers to the angle between the first connection portion 11 and the second connection portion 21 when the display screen unit 70 is adjusted to the current curvature.

[0092] like Figure 10 As shown, the specific steps include:

[0093] S31: For each display screen unit 70 , obtain a target curvature K of the display screen unit 70 and a spacing S between two connection positions of the display screen unit 70 and the first connection portion 11 and the second connection portion 21 ;

[0094] The portion where the first connection portion 11 and the display unit 70 are connected is a plane, and the portion where the second connection portion 21 and the display unit 70 are connected is also a plane. The connection position of the display unit 70 and the first connection portion 11 that is closest to the second connection portion 21 is used as the first connection position, and the connection position of the display unit 70 and the second connection portion 21 that is closest to the first connection portion 11 is used as the second connection position. Figure 11 and Figure 12 As shown, the distance S between the two connection positions is the shortest distance between the first connection position and the second connection position when the display screen unit 70 is unfolded into a flat state.

[0095] S32: For each display screen unit 70, an angle α between the first connecting portion 11 and the second connecting portion 21 connected to the display screen unit 70 is calculated based on the target curvature K of the display screen unit 70 and the connection point spacing S between the two connection positions of the display screen unit 70 and the first connecting portion 11 and the second connecting portion 21, and is used as a target adjustment angle of the curved display screen curvature intelligent adjustment device;

[0096] The specific steps include:

[0097] The curvature radius of the display screen unit 70 is obtained according to the formula r=1 / K;

[0098] The reference angle β between the first connecting portion 11 and the second connecting portion 21 is calculated according to the formula r=Sπ / (π-β);

[0099] When the curvature is positive, the display screen unit 70 is an outer arc curved display screen unit 70, and the luminous side of the display screen unit 70 is convex; when the curvature is negative, the display screen unit 70 is an inner arc curved display screen unit 70; and the luminous side of the curved display screen unit 70 is concave.

[0100] like Figure 11 As shown, if the curvature is positive, then α = β;

[0101] like Figure 12 As shown, if the curvature is negative, then α=2π-β;

[0102] The angle α between the first connection portion 11 and the second connection portion 21 represents the angle at which the first connection portion 11 rotates counterclockwise to the position of the second connection portion 21 .

[0103] S33 : Obtaining a target adjustment angle of the device for intelligently adjusting the curvature of a curved display screen according to the angle α between the first connecting portion 11 and the second connecting portion 21 .

[0104] S4: Determining a target angular position of an output end of a driving device in each intelligent curvature adjustment device for a curved display screen according to a target adjustment angle of each intelligent curvature adjustment device for a curved display screen;

[0105] Since there is a one-to-one correspondence between the target angular position of the output end of the driving device and the target adjustment angle of the intelligent adjustment device for the curvature of the curved display screen, the target angular position of the output end of the driving device in each intelligent adjustment device for the curvature of the curved display screen can be determined by the target adjustment angle of the intelligent adjustment device for the curvature of the curved display screen.

[0106] S5: Control the output end of the driving device in the intelligent adjustment device for the curvature of each curved display screen to rotate to a target angular position.

[0107] Since it takes a certain amount of time for the output end of the driving device in the intelligent curvature adjustment device of the curved display screen to rotate from the current position to the target angle position, it also takes a certain amount of time for the curvature of the curved display screen to adjust from the current curvature to the target curvature. During this process, the curvature of the display screen is in a transitional stage and cannot adapt well to the displayed image. Figure 13 As shown, in this embodiment, S5: controlling the output end of the driving device in the intelligent curvature adjustment device of each curved display screen to rotate to the target angular position also includes the following steps:

[0108] S51: Acquire a first curvature deviation threshold and a current curvature of each curved display screen unit 70;

[0109] The first curvature deviation threshold refers to a value beyond which the curvature change of the curved display unit causes the image displayed by the curved display unit to fail to meet display requirements. Therefore, if the curvature change of the curved display unit exceeds this value, the displayed image needs to be adjusted. This value can be set based on experience.

[0110] S52: For each curved display screen unit 70, determine a plurality of intermediate curvatures that increase or decrease in sequence according to the first curvature deviation threshold, the current curvature of the curved display screen unit 70, and the target curvature, and make the curvature deviation value between two adjacent intermediate curvatures equal to the first curvature deviation threshold;

[0111] This step starts with the current curvature of the curved display unit 70 and sets an intermediate curvature every first curvature deviation threshold. This results in a series of intermediate curvatures from the current curvature to the target curvature. These intermediate curvatures are between the current curvature of the curved display unit 70 and the target curvature.

[0112] S53: Acquire the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position;

[0113] In this step, the angular position output by the output end of the driving device when the curved display screen unit 70 is adjusted to each intermediate curvature is obtained based on the corresponding relationship between the curvature of the curved display screen unit 70 and the angular position of the output end of the driving device.

[0114] S54: Acquire the target display image;

[0115] The target display image is the image displayed when the curvature of the curved display unit is adjusted to the target curvature.

[0116] S55: Acquire intermediate display images corresponding to the curved display screen unit 70 at each intermediate curvature according to the target display image and each intermediate curvature, and determine corresponding relationships between each intermediate image and the intermediate angular position according to corresponding relationships between the intermediate curvatures and the intermediate angular positions;

[0117] In a specific implementation, the target display image of the curved display unit at the target curvature can be projected onto a reference plane to obtain a reference image. The reference image is then projected onto the curved display unit at various intermediate curvature states to obtain intermediate display images corresponding to the intermediate curvatures. The intermediate angular position corresponding to the intermediate curvature is then determined as the mid-angular position corresponding to the intermediate display image. The reference plane is the plane where the flat display screen is located when the screen is placed in the most optimal viewing position for the viewer. This plane is generally located a certain distance directly in front of the curved display screen unit 70, and this distance can be set based on experience. The projection method is to project the image in a direction perpendicular to the reference plane.

[0118] S56: controlling the output end of the driving output device to rotate to each intermediate angular position in sequence, and displaying an intermediate display image corresponding to the intermediate angular position when rotating to each intermediate angular position.

[0119] When the output end of the drive output device rotates to each intermediate angular position, the curvature of the curved display screen unit 70 also reaches the corresponding intermediate curvature state, and the intermediate display image corresponding to the intermediate curvature state is displayed. This ensures that the image display effect of the curved display unit during the curvature transition phase is always closest to the display effect of the curved display screen at the target curvature. Because this embodiment performs adjustment before the curvature change exceeds the first curvature deviation threshold, the audience is unlikely to notice the change in display effect.

[0120] Since the density of LED lamp beads in the display screen unit 70 is different at different curvatures, the higher the density of the LED lamp beads, the higher the brightness of the displayed image, and vice versa. Therefore, when displaying the same image, the brightness of the image displayed by the display units with different curvatures will vary, which will cause the image brightness of the curved display screen unit 70 to be inconsistent in the curvature transition state, thereby affecting the image display effect. Figure 14 As shown, in this embodiment, S5: controlling the output end of the driving device in the intelligent curvature adjustment device of each curved display screen to rotate to the target angular position also includes the following steps:

[0121] S501: Acquire a second curvature deviation threshold and a current curvature of each curved display screen unit 70;

[0122] The second curvature deviation threshold refers to the value at which the brightness of the image displayed by the curved display unit will change easily noticeable to the viewer when the curvature change of the curved display unit exceeds the value. This value can be set based on experience.

[0123] S502: For each curved display screen unit 70, determine a plurality of intermediate curvatures that increase or decrease in sequence according to the second curvature deviation threshold, the current curvature of the curved display screen unit 70, and the target curvature, and make the curvature deviation value between two adjacent intermediate curvatures equal to the second curvature deviation threshold;

[0124] This step starts with the current curvature of the curved display unit 70 and sets an intermediate curvature every second curvature deviation threshold. This results in a series of intermediate curvatures from the current curvature to the target curvature. These intermediate curvatures are between the current curvature of the curved display unit 70 and the target curvature.

[0125] S503: Acquire the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position;

[0126] In this step, the angular position output by the output end of the driving device when the curved display screen unit 70 is adjusted to each intermediate curvature is obtained based on the corresponding relationship between the curvature of the curved display screen unit 70 and the angular position of the output end of the driving device.

[0127] S504: Acquire the brightness value of the curved surface display unit when the curved surface display unit displays the target display image as the target brightness value;

[0128] The target display image is the image displayed when the curvature of the curved display unit is adjusted to the target curvature.

[0129] S505: Obtaining, based on the target brightness value and each intermediate curvature, each brightness value corresponding to the curved display screen unit 70 at each intermediate curvature as an intermediate brightness value, and determining a correspondence between each intermediate brightness value and an intermediate angular position based on a correspondence between the intermediate curvature and the intermediate angular position;

[0130] Assuming the target brightness value is Lm, the target curvature is Km, and an intermediate curvature is Kj, then the intermediate brightness value corresponding to this intermediate curvature is Lj = Lm × Km / Kj. Image brightness can be adjusted by adjusting the brightness of the LED light-emitting unit. Assuming the brightness of the LED light-emitting unit when the image is at the target brightness value is Lem, the target curvature is Km, and an intermediate curvature is Kj, then the brightness of the LED light-emitting unit corresponding to this intermediate curvature is Lej = Lem × Km / Kj.

[0131] S506: controlling the output end of the driving output device to rotate to each intermediate angular position in sequence, and adjusting the brightness value of the curved display unit to an intermediate brightness value corresponding to each intermediate angular position when rotating to each intermediate angular position.

[0132] When the output end of the drive output device rotates to each intermediate angular position, the curvature of the curved display screen unit 70 also reaches the corresponding intermediate curvature state. At this time, the image brightness is adjusted to the intermediate brightness value corresponding to the intermediate curvature state. This ensures that the image brightness of the curved display unit during the curvature transition phase is always closest to the brightness of the curved display screen at the target curvature. Because this embodiment performs adjustment before the curvature change exceeds the second curvature deviation threshold, the viewer is unlikely to notice changes in the displayed image brightness during the curvature adjustment process.

[0133] The above description is only a specific embodiment of the present invention. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. An intelligent display control method for controlling image display on a curved display screen, characterized in that: The curved display screen includes a plurality of display screen units, each display screen unit is correspondingly equipped with at least one intelligent curvature adjustment device for the curved display screen, and the intelligent curvature adjustment device for the curved display screen includes: A first arc-shaped component is provided with a first connecting portion; a second arc-shaped member having a second connecting portion, the second connecting portion being located at an end of the second arc-shaped member away from the first connecting portion, the second arc-shaped member sliding relative to the first arc-shaped member along a preset arc trajectory, the first connecting portion and the second connecting portion being connected to the display screen unit at different positions on the same display screen unit; A drive mechanism comprising a drive device, an arc-shaped inner gear ring, and a drive gear, wherein the drive gear is connected to the first arc-shaped component, the inner gear ring is connected to the second arc-shaped component, the rotation center of the inner gear ring coincides with the rotation center of the second arc-shaped component, the drive gear meshes with the inner gear ring, the drive device is mounted on the second arc-shaped component, and an output end of the drive device is connected to the drive gear; A control circuit is electrically connected to the driving device, and the control circuit is used to control the driving device to drive the driving gear to rotate; The method comprises the following steps: Obtaining the target curvature of each position of the curved display screen; Determining a target curvature of each display screen unit according to the target curvature of each position of the curved display screen; Determining target adjustment angles of respective curved display screen curvature intelligent adjustment devices installed on respective display screen units according to target curvatures of respective display screen units; Determining the target angular position of the output end of the driving device in each intelligent curvature adjustment device for a curved display screen according to the target adjustment angle of each intelligent curvature adjustment device for a curved display screen; Controlling the output end of the driving device in the intelligent curvature adjustment device of each curved display screen to rotate to the target angular position; The method of controlling the output end of the driving device in the intelligent curvature adjustment device of each curved display screen to rotate to the target angular position further comprises the following steps: Obtaining a second curvature deviation threshold and a current curvature of each curved display screen unit; For each curved display screen unit, determining a plurality of intermediate curvatures that increase or decrease in sequence according to the second curvature deviation threshold, the current curvature of the curved display screen unit, and the target curvature, and ensuring that the curvature deviation between two adjacent intermediate curvatures is equal to the second curvature deviation threshold; Obtaining the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position; Acquire the brightness value of the curved surface display unit when the curved surface display unit displays the target display image as the target brightness value; Obtaining, according to the target brightness value and each intermediate curvature, each brightness value corresponding to the curved display unit at each intermediate curvature as an intermediate brightness value, and determining, according to the corresponding relationship between the intermediate curvature and the intermediate angular position, a corresponding relationship between each intermediate brightness value and the intermediate angular position; The output end of the control driving output device is rotated to each intermediate angular position in sequence, and when it is rotated to each intermediate angular position, the brightness value of the curved display unit is adjusted to the intermediate brightness value corresponding to each intermediate angular position.

2. The intelligent display control method according to claim 1, characterized in that: The method of controlling the output end of the driving device in the intelligent curvature adjustment device of each curved display screen to rotate to the target angular position further comprises the following steps: Obtaining a first curvature deviation threshold and a current curvature of each curved display screen unit; For each curved display screen unit, determining a plurality of intermediate curvatures that increase or decrease in sequence according to the first curvature deviation threshold, the current curvature of the curved display screen unit, and the target curvature, and making the curvature deviation value between two adjacent intermediate curvatures equal to the first curvature deviation threshold; Obtaining the angular position of the output end of the driving device corresponding to each intermediate curvature as the intermediate angular position; Acquire target display image; Acquire, based on the target display image and each intermediate curvature, intermediate display images corresponding to when the curved display screen unit is at each intermediate curvature, and determine, based on the corresponding relationship between the intermediate curvature and the intermediate angular position, a corresponding relationship between each intermediate image and the intermediate angular position; The output end of the control driving output device is rotated to each intermediate angular position in sequence, and when it rotates to each intermediate angular position, an intermediate display image corresponding to the intermediate angular position is displayed.

3. The intelligent display control method according to any one of claims 1 or 2, characterized in that: The method of determining the target adjustment angle of each curved display screen curvature intelligent adjustment device installed on each display screen unit according to the target curvature of each display screen unit comprises the following steps: For each display screen unit, obtaining a target curvature K of the display screen unit and a spacing S between two connection positions of the display screen unit and the first connection portion and the second connection portion; For each display screen unit, the angle α between the first connection part and the second connection part connected to the display screen unit is calculated based on the target curvature K of the display screen unit and the connection point spacing distance S between the two connection positions of the display screen unit and the first connection part and the second connection part, and is used as the target adjustment angle of the intelligent adjustment device for the curvature of the curved display screen.

4. The intelligent display control method according to claim 1, characterized in that: The driving device is a servo motor, and the output shaft of the servo motor is connected to the driving gear.

5. The intelligent display control method according to claim 1, characterized in that: The driving device is a steering gear, which includes a planetary gear reducer, and the output end of the planetary gear reducer is connected to the driving gear.

6. The intelligent display control method according to claim 1, characterized in that: The intelligent adjustment device for the curvature of the curved display screen also includes a manual curvature adjustment mechanism, which includes a limit member and a sliding member that can slide relative to the first arc-shaped member, the limit member is connected to the sliding member, and a first limit groove group is provided on the second arc-shaped member, the first limit groove group includes a plurality of first limit grooves arranged at equal intervals along a circular arc trajectory, when the sliding member slides until the limit member is stuck in the first limit groove, the relative angle between the first connection part and the second connection part is locked, and when the sliding member slides until the limit member is disengaged from the first limit groove, the relative angle between the second connection part and the first connection part is adjustable.

7. The intelligent display control method according to claim 6, characterized in that: The intelligent adjustment device for the curvature of the curved display screen also includes a second limit groove group, the second limit groove group and the first limit groove group are located at different positions in the sliding direction of the sliding part, the second limit groove group includes a plurality of second limit grooves arranged at equal intervals along a circular arc trajectory, the interval angle between two adjacent second limit grooves in the second limit groove group is the same as the interval angle between two adjacent first limit grooves in the first limit groove group, and the second limit groove group and the first limit groove group are staggered by half of the interval angle along the circumferential direction of the second arc-shaped component.

8. The intelligent display control method according to claim 1, characterized in that: The intelligent curvature adjustment device for a curved display screen further comprises an arc-shaped grating ruler and a grating detection head. The grating ruler is mounted on the second arc-shaped component, and the grating detection head is mounted on the first arc-shaped component.

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