LED display screen direct-drive display method free of sending card and receiving card

Abstract

The invention provides an LED display screen direct-drive display method free of a sending card and a receiving card, and the method comprises the steps: 1, receiving a to-be-displayed image outputted by a user side based on a data interface of an LED display screen, and carrying out the preprocessing of the to-be-displayed image based on a driving chip; 2, generating a driving signal for each display pixel point in the LED display screen based on the preprocessing result and the display requirement, and synchronously driving each display pixel point based on the driving signal; and step 3, displaying the to-be-displayed image based on the synchronous driving result, receiving a dynamic updating instruction of the management terminal according to the display result, and dynamically updating the display picture on the LED display screen based on the dynamic updating instruction. The display flexibility and adaptability are improved, different display requirements can be met, and therefore the display stability and reliability can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of LED display screen display, and in particular to a direct-drive display method for an LED display screen free of sending cards and receiving cards. Background Art

[0002] At present, in the traditional LED display system, the sending card and the receiving card are common components. The sending card is mainly responsible for processing and converting the image source signal and sending the data to the receiving card, which then distributes the data to each LED module;

[0003] However, the use of sending cards and receiving cards in the prior art increases the cost and complexity of the system, and the data transmission between the sending card and the receiving card may be affected by signal interference, transmission delay and other problems, thereby affecting the stability and real-time performance of the display effect, and is not conducive to adapting to the needs of different application scenarios. At the same time, the traditional LED display screen is difficult to be miniaturized, integrated, and thin, resulting in complex installation and cumbersome use procedures, which greatly reduces the display effect of the LED display screen;

[0004] Therefore, in order to overcome the above technical problems, the present invention provides a direct-drive display method for an LED display screen without a sending card and a receiving card. Summary of the invention

[0005] The present invention provides a direct-drive display method for an LED display screen free of sending cards and receiving cards, which is used for receiving an image to be displayed output by a computer through a data interface, and performing preprocessing by using a driving chip; generating a driving signal for each display pixel point according to the preprocessing result and display requirements, and realizing synchronous driving; performing image display according to the synchronous driving result, and being able to update the display screen in real time according to a dynamic update instruction of a management terminal; eliminating the sending card and the receiving card, simplifying the system structure, reducing the cost and complexity, and improving the efficiency and real-time performance of the display; being able to update the screen in time according to the dynamic update instruction, increasing the flexibility and adaptability of the display, and being able to meet different display requirements, thereby helping to improve the stability and reliability of the display.

[0006] A method for directly driving an LED display screen without sending cards and receiving cards, comprising:

[0007] Step 1: Receive the image to be displayed output by the user end based on the data interface of the LED display screen, and pre-process the image to be displayed based on the driver chip;

[0008] Step 2: Generate a driving signal for each display pixel in the LED display screen based on the preprocessing result and display requirements, and synchronously drive each display pixel based on the driving signal;

[0009] Step 3: Display the image to be displayed based on the synchronous driving result, receive the dynamic update instruction of the management terminal according to the display result, and dynamically update the display screen on the LED display screen based on the dynamic update instruction.

[0010] Preferably, a method for directly driving a LED display screen without a sending card and a receiving card, in step 1, receiving an image to be displayed output by a computer based on a data interface of the LED display screen, comprising:

[0011] Perform communication protocol configuration based on basic communication parameters and the user-side signal interface, and build a communication link between the data interface and the user-side based on the configuration result;

[0012] Signal activation is performed on the image to be outputted in the user terminal, and based on the signal activation result, the image signal to be displayed is transmitted to the LED display screen according to the established communication link, and the image signal to be displayed is decoded based on the LED display screen to obtain the image to be displayed.

[0013] Preferably, a method for directly driving an LED display screen without a sending card and a receiving card, transmitting an image to be displayed to the LED display screen according to a communication link constructed based on a signal activation result, comprises:

[0014] Obtaining the screen display parameter requirements of the image to be displayed from the user end based on the signal activation result, and synchronously sending the screen display parameter requirements to the LED display screen based on the established communication link;

[0015] Determine the timestamp of the received image to be displayed and the screen display parameter requirement based on the LED display screen, and associate the image to be displayed and the screen display parameter requirement at the same time node with the determined timestamp;

[0016] Based on the object association result, a cache space is allocated for each image to be displayed in the LED display screen, and based on the object association result, the image to be displayed and the corresponding screen display parameter requirements are cached in the cache space.

[0017] Preferably, a direct drive display method for an LED display screen without a sending card and a receiving card, in step 1, preprocessing the image to be displayed based on the driving chip, including:

[0018] Acquire the image to be displayed, and analyze the image to be displayed to determine a first image format of the image to be displayed;

[0019] Extracting characteristic parameters of the LED display screen, and determining an allowable second image format of the LED display screen based on the characteristic parameters;

[0020] Matching the first image format of the image to be displayed with the allowable second image format of the LED display screen, and determining whether the first image format of the image to be displayed is supported by the allowable second image format based on the matching result, and if not supported, performing format conversion on the first image format of the image to be displayed based on the allowable second image format;

[0021] At the same time, the resolution of the image to be displayed is extracted based on the analysis result of the image to be displayed, and the resolution of the image to be displayed is adaptively adjusted based on the format conversion result.

[0022] Preferably, a method for directly driving an LED display screen without a sending card and a receiving card, adaptively adjusting the resolution of an image to be displayed based on a format conversion result, comprises:

[0023] Performing real-time monitoring on the format conversion process of the first image format of the image to be displayed, and obtaining, based on the real-time monitoring result, an execution parameter corresponding to each execution step when the format conversion of the image to be displayed is performed;

[0024] Determine the image quality loss value of the image to be displayed when the format conversion is performed based on the execution parameter corresponding to each execution step, and start the resolution adjustment mechanism of the image to be displayed when the image quality loss value is within a preset threshold range;

[0025] Extracting the supportable resolution of the LED display screen based on the startup result, and determining the adjustment direction and adjustment parameter of the resolution of the image to be displayed based on the relative size relationship between the resolution of the image to be displayed and the supportable resolution;

[0026] Based on the adjustment direction, a corresponding adjustment method is adopted to adjust the resolution of the image to be displayed according to the adjustment parameter.

[0027] Preferably, a direct-drive display method for an LED display screen without a sending card and a receiving card, based on the adjustment direction, adopts a corresponding adjustment method to adjust the resolution of the image to be displayed according to the adjustment parameter, including:

[0028] The obtained relative size relationship between the resolution of the image to be displayed and the supported resolution;

[0029] If the resolution of the image to be displayed is higher than the supported resolution, determining a merging interval of pixels in the image to be displayed based on the adjustment parameter, and segmenting the pixels based on the merging interval;

[0030] Merging pixels in each segment based on the segment division result, and reducing the resolution of the image to be displayed based on the merged result;

[0031] If the resolution of the image to be displayed is lower than the supported resolution, the detail splitting amount for each pixel is determined based on the adjustment parameter, and each pixel is interpolated based on the detail splitting amount;

[0032] At the same time, the resolution of the image to be displayed is enhanced based on the interpolation result, and the resolution enhancement process is supervised based on the allowable critical difference between the resolution of the image to be displayed and the supported resolution, and the resolution enhancement process is completed when the allowable critical difference is reached.

[0033] Preferably, a method for directly driving a LED display screen without a sending card and a receiving card, in step 2, a driving signal for each display pixel in the LED display screen is generated based on the preprocessing result and the display requirement, and each display pixel is synchronously driven based on the driving signal, including:

[0034] Acquire the size information of the LED display screen, and adaptively adjust the size of the preprocessed image to be displayed based on the size information;

[0035] Based on the adaptive size adjustment result, the image to be displayed is mapped on the LED display screen in the same proportion, and based on the same proportion mapping result, a mapping relationship between each image pixel in the image to be displayed and each display pixel in the LED display screen is obtained;

[0036] Based on the mapping relationship, a pixel layout of the image to be displayed on the LED display screen is obtained, and based on the pixel layout result, personalized display content of each display pixel for the image to be displayed is determined;

[0037] Determine the image color data of each display pixel of the image to be displayed based on the personalized display content, and perform color coding conversion on the image color data of each display pixel based on the configuration parameters of the LED display screen to obtain a color coding signal of each display pixel;

[0038] Acquiring display requirements based on the management terminal, and determining display brightness of different pixel areas in the image to be displayed according to the display requirements;

[0039] Determine the brightness coding signal of each pixel based on the display brightness, and at the same time, extract the characteristic parameters of the LED display screen, and analyze the characteristic parameters to obtain the pixel scanning order and pixel refresh time interval of the LED display screen;

[0040] Based on the pixel scanning sequence and the pixel refresh time interval, the row scanning timing and the column driving timing of the LED display are obtained, and the row scanning timing and the column driving timing are respectively integrated with the position coordinates, color coding signals and brightness coding signals of each pixel in the LED display, and the driving signal of each display pixel in the LED display is obtained based on the integrated results;

[0041] The driving signal is read based on the core signal processing board in the LED display screen, and the dot matrix scanning data is output based on the reading result. At the same time, the output time parameter of the driving chip in the LED display screen is obtained, and the output time parameter is used as the signal frame duration of the dot matrix scanning data output by the core signal processing board;

[0042] Based on the preset transmission circuit, the dot matrix scanning data and the corresponding signal frame duration are distributedly sent to each logic board of the LED display screen, and each display pixel in the LED display screen is synchronously driven based on each logic board.

[0043] Preferably, a direct drive display method for an LED display screen without a sending card and a receiving card is provided, and a driving signal of each display pixel in the LED display screen is obtained based on the comprehensive result, including:

[0044] Obtain the obtained driving signal and construct a virtual model of the LED display screen in a computer;

[0045] Based on the construction results, the obtained driving signal is used to build a signal driving simulation scene in the computer, and based on the construction results, the virtual model of the LED display screen is simulated and driven according to the driving signal;

[0046] At the same time, during the simulation drive, the current and voltage values ​​of the virtual model of the LED display screen during operation are monitored in real time, and the current and voltage values ​​are balanced;

[0047] Determine the display state of the image to be displayed on the LED display screen based on the equalization processing result and the simulation driving result, and determine the abnormal display characteristics when the display state does not meet the preset requirements;

[0048] The parameters of the driving signal are adjusted based on the abnormal display characteristics until the display state meets the preset requirements.

[0049] Preferably, a direct drive display method for an LED display screen without a sending card and a receiving card, in step 3, displaying an image to be displayed based on a synchronous drive result, comprises:

[0050] Controlling the display pixels in the LED display screen to coordinate and associate based on the synchronous driving result, and displaying the image to be displayed based on the coordinated association result;

[0051] Monitor the display state of the image to be displayed on the LED display screen in real time, and obtain a display state representation sequence of the image to be displayed based on the real-time monitoring result;

[0052] An image display record log is generated based on the display state representation sequence, and the generated image display record log is archived and stored.

[0053] Preferably, a direct-drive display method for an LED display screen without a sending card and a receiving card, in step 3, a dynamic update instruction of a management terminal is received according to the display result, and a display screen on the LED display screen is dynamically updated based on the dynamic update instruction, including:

[0054] Based on the display results, the communication status between the management terminal and the LED display screen is monitored in real time, and when the dynamic update instruction sent by the management terminal is monitored, the dynamic update instruction is parsed to obtain the update characteristics of the display screen in the LED display screen;

[0055] Based on the update characteristics, the update elements and update parameters of the display picture in the LED display screen are determined, and the display picture on the LED display screen is dynamically updated based on the update elements and update parameters.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The image to be displayed is received from the computer through the data interface, and is preprocessed by the driver chip; a drive signal for each display pixel is generated according to the preprocessing result and the display requirement to realize synchronous drive; the image is displayed according to the synchronous drive result, and the display screen can be updated in real time according to the dynamic update instruction of the management terminal; the sending card and the receiving card are omitted, the system structure is simplified, the cost and complexity are reduced, and the efficiency and real-time performance of the display are improved; the screen can be updated in time according to the dynamic update instruction, the flexibility and adaptability of the display are increased, and different display requirements can be met, thereby helping to improve the stability and reliability of the display.

[0058] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0059] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0061] Figure 1 This is a flow chart of a method for directly driving an LED display screen without a sending card and a receiving card in an embodiment of the present invention;

[0062] Figure 2 This is a flow chart of step 1 in a method for directly driving an LED display screen without a sending card and a receiving card in Embodiment 2 of the present invention;

[0063] Figure 3 This is a flowchart of step 3 in a method for directly driving an LED display screen without a sending card and a receiving card in Example 9 of the present invention. DETAILED DESCRIPTION

[0064] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0065] Embodiment 1:

[0066] This embodiment provides a method for directly driving an LED display screen without a sending card and a receiving card. Figure 1 As shown, including:

[0067] Step 1: Receive the image to be displayed output by the user end based on the data interface of the LED display screen, and pre-process the image to be displayed based on the driver chip;

[0068] Step 2: Generate a driving signal for each display pixel in the LED display screen based on the preprocessing result and display requirements, and synchronously drive each display pixel based on the driving signal;

[0069] Step 3: Display the image to be displayed based on the synchronous driving result, receive the dynamic update instruction of the management terminal according to the display result, and dynamically update the display screen on the LED display screen based on the dynamic update instruction.

[0070] In this embodiment, the user end refers to a device capable of image transmission, which may be a computer or a mobile phone.

[0071] In this embodiment, the data interface is a communication interface on the LED display screen for receiving images to be displayed, including HDMI, DP, VGA, and TV.

[0072] In this embodiment, the driving chip is the main control center on the LED display screen, which can be an MCU, wherein the MCU is integrated in the LED display screen. At the same time, a logic board is arranged under the LED display screen to achieve miniaturization, integration, and thinness of the LED display screen.

[0073] In this embodiment, preprocessing refers to performing image format conversion and resolution adjustment on the image to be displayed.

[0074] In this embodiment, the driving signal is generated by a driving chip and is used to drive each display pixel in the LED display screen.

[0075] In this embodiment, synchronous driving refers to controlling each display pixel in the LED display screen simultaneously through the obtained driving signal, so as to ensure effective display of the image to be displayed.

[0076] The working principle and beneficial effects of the above technical solution are: receiving the image to be displayed output by the computer through the data interface, using the driver chip for preprocessing, generating a drive signal for each display pixel according to the preprocessing result and the display requirements, realizing synchronous driving, displaying the image according to the synchronous driving result, and being able to update the display screen in real time according to the dynamic update instruction of the management terminal, eliminating the sending card and the receiving card, simplifying the system structure, reducing the cost and complexity, and improving the efficiency and real-time performance of the display. At the same time, the screen can be updated in time according to the dynamic update instruction, which increases the flexibility and adaptability of the display and can meet different display requirements, thereby helping to improve the stability and reliability of the display.

[0077] Embodiment 2:

[0078] Based on Example 1, this embodiment provides a method for directly driving an LED display screen without a sending card and a receiving card, such as Figure 2 As shown, in step 1, receiving the image to be displayed output by the computer based on the data interface of the LED display screen includes:

[0079] Step 101: Obtain the available data interface of the LED display screen, read the script file of the LED display screen, and extract the basic communication parameters of the data interface;

[0080] Step 102: Perform communication protocol configuration with the user end signal interface based on basic communication parameters, and establish a communication link between the data interface and the user end based on the configuration result;

[0081] Step 103: Activate the image to be displayed in the user terminal, and transmit the image signal to be displayed to the LED display screen according to the established communication link based on the signal activation result, and decode the image signal to be displayed based on the LED display screen to obtain the image to be displayed.

[0082] In this embodiment, the script file refers to the execution code corresponding to each component in the LED display screen.

[0083] In this embodiment, the basic communication parameters refer to parameters such as the communication format and communication bandwidth corresponding to the data communication interface.

[0084] In this embodiment, the communication protocol configuration refers to signal adaptation between the data interface of the LED display screen and the signal interface of the user end, thereby realizing the transmission and reception of the image.

[0085] In this embodiment, performing signal activation on the image to be output and displayed in the user terminal refers to determining the image to be output and displayed in the user terminal and performing transmission preparation.

[0086] The working principle and beneficial effects of the above technical solution are: first, by obtaining the data interface available to the LED display screen and reading its script file, the basic parameters required for communication with the display screen, such as transmission rate, communication mode, etc., can be determined. Then, the corresponding communication protocol configuration is performed on the computer side according to these parameters, so that an effective communication link can be established between the computer and the display screen. Next, the signal activation is performed on the output image to be displayed so that it has a transmittable state. Finally, with the help of the established communication link, the activated image to be displayed is accurately transmitted from the computer to the LED display screen, providing a reliable image for image display.

[0087] Embodiment 3:

[0088] Based on Example 2, this embodiment provides a direct-drive display method for an LED display screen without a sending card and a receiving card, and transmits an image to be displayed to the LED display screen according to a communication link established based on a signal activation result, including:

[0089] Obtaining the screen display parameter requirements of the image to be displayed from the user end based on the signal activation result, and synchronously sending the screen display parameter requirements to the LED display screen based on the established communication link;

[0090] Determine the timestamp of the received image to be displayed and the screen display parameter requirement based on the LED display screen, and associate the image to be displayed and the screen display parameter requirement at the same time node with the determined timestamp;

[0091] Based on the object association result, a cache space is allocated for each image to be displayed in the LED display screen, and based on the object association result, the image to be displayed and the corresponding screen display parameter requirements are cached in the cache space.

[0092] In this embodiment, the screen resolution parameter requirement refers to the conditions that need to be met when displaying the image to be displayed, such as display resolution.

[0093] In this embodiment, the object relationship refers to binding the image to be displayed and the screen display parameters at the same time node.

[0094] The working principle and beneficial effects of the above technical solution are: first, the screen display parameter requirements of the image to be displayed, such as resolution, color and other information, are obtained according to the signal activation result, and these parameters are synchronously sent to the LED display screen through the established communication link. Then, the LED display screen determines the timestamp of the received image and parameters so that the two at the same time node can be accurately associated. Then, according to the object association result, a special cache space is allocated for each image to be displayed, and the image and its corresponding parameters are cached in the cache space together, so as to facilitate the effective retrieval of the image to be displayed when the image is displayed.

[0095] Embodiment 4:

[0096] On the basis of Example 1, this embodiment provides a direct drive display method for an LED display screen without a sending card and a receiving card. In step 1, preprocessing the image to be displayed based on the driving chip includes:

[0097] Acquire the image to be displayed, and analyze the image to be displayed to determine a first image format of the image to be displayed;

[0098] Extracting characteristic parameters of the LED display screen, and determining an allowable second image format of the LED display screen based on the characteristic parameters;

[0099] Matching the first image format of the image to be displayed with the allowable second image format of the LED display screen, and determining whether the first image format of the image to be displayed is supported by the allowable second image format based on the matching result, and if not supported, performing format conversion on the first image format of the image to be displayed based on the allowable second image format;

[0100] At the same time, the resolution of the image to be displayed is extracted based on the analysis result of the image to be displayed, and the resolution of the image to be displayed is adaptively adjusted based on the format conversion result.

[0101] In this embodiment, the first image format refers to the image format corresponding to the image to be displayed.

[0102] In this embodiment, the characteristic parameters refer to parameters such as the requirements of the LED display screen on the image format when displaying the image.

[0103] In this embodiment, the allowable second image format refers to an image format that the LED display screen can accept when displaying an image.

[0104] The working principle and beneficial effects of the above technical solution are: first, the image to be displayed is obtained and its format, i.e., the first image format, is parsed, and at the same time, the characteristic parameters of the LED display screen are obtained to determine its allowable second image format, and then the first image format and the second image format are compared and matched to determine whether the first image format is supported. If not, the format is converted according to the second image format. In this process, the resolution of the image to be displayed is extracted based on the analysis of the image to be displayed, and the resolution is adaptively adjusted to adapt to the new format and display screen requirements during the format conversion, thereby ensuring the display quality of the image to be displayed and simplifying the operation process.

[0105] Embodiment 5:

[0106] On the basis of Example 4, this embodiment provides a direct-drive display method for an LED display screen without a sending card and a receiving card, and adaptively adjusts the resolution of an image to be displayed based on a format conversion result, including:

[0107] Performing real-time monitoring on the format conversion process of the first image format of the image to be displayed, and obtaining, based on the real-time monitoring result, an execution parameter corresponding to each execution step when the format conversion of the image to be displayed is performed;

[0108] Determine the image quality loss value of the image to be displayed when the format conversion is performed based on the execution parameter corresponding to each execution step, and start the resolution adjustment mechanism of the image to be displayed when the image quality loss value is within a preset threshold range;

[0109] Extracting the supportable resolution of the LED display screen based on the startup result, and determining the adjustment direction and adjustment parameter of the resolution of the image to be displayed based on the relative size relationship between the resolution of the image to be displayed and the supportable resolution;

[0110] Based on the adjustment direction, a corresponding adjustment method is adopted to adjust the resolution of the image to be displayed according to the adjustment parameter.

[0111] In this embodiment, the execution parameter refers to the specific execution action corresponding to each execution step and the specific content corresponding to each execution action when the image to be displayed is converted into a format.

[0112] In this embodiment, the image quality loss value refers to a specific value of image quality loss or damage when the format of the image to be displayed is converted.

[0113] In this embodiment, the preset threshold interval is set in advance and is a standard for determining whether the format conversion of the image to be displayed meets the set conditions, and can be adjusted.

[0114] In this embodiment, the resolution adjustment mechanism refers to a solution for adjusting the resolution of an image to be displayed.

[0115] In this embodiment, the supportable resolution refers to the resolution range that can be allowed in the LED display screen.

[0116] In this embodiment, the adjustment direction and adjustment parameter refer to determining whether to increase or decrease the resolution of the image to be displayed and the specific value corresponding to the increase or decrease according to the relative size relationship between the resolution of the image to be displayed and the supported resolution.

[0117] In this embodiment, the adjustment method is known in advance, and specifically, the resolution of the image to be displayed can be adjusted by a driver chip.

[0118] The working principle and beneficial effects of the above technical solution are: by continuously monitoring the format conversion process of the first image format, obtaining the execution parameters corresponding to each execution step, and calculating the quality loss value of the image during the conversion process based on these parameters, when the quality loss value is in the preset threshold range, triggering the resolution adjustment mechanism, and then obtaining the resolution that the LED display can support, comparing the resolution of the image to be displayed with the supportable resolution to determine the adjustment direction and parameters, and finally adjusting the resolution according to the determined method and parameters, so that the image resolution can better adapt to the LED display, and at the same time, reduce the quality loss caused by format conversion to ensure the final display effect.

[0119] Embodiment 6:

[0120] On the basis of Example 5, this embodiment provides a direct-drive display method for an LED display screen without a sending card and a receiving card, and the resolution of the image to be displayed is adjusted according to the adjustment parameter by taking a corresponding adjustment method based on the adjustment direction, including:

[0121] The obtained relative size relationship between the resolution of the image to be displayed and the supported resolution;

[0122] If the resolution of the image to be displayed is higher than the supported resolution, determining a merging interval of pixels in the image to be displayed based on the adjustment parameter, and segmenting the pixels based on the merging interval;

[0123] Merging pixels in each segment based on the segment division result, and reducing the resolution of the image to be displayed based on the merged result;

[0124] If the resolution of the image to be displayed is lower than the supported resolution, the detail splitting amount for each pixel is determined based on the adjustment parameter, and each pixel is interpolated based on the detail splitting amount;

[0125] At the same time, the resolution of the image to be displayed is enhanced based on the interpolation result, and the resolution enhancement process is supervised based on the allowable critical difference between the resolution of the image to be displayed and the supported resolution, and the resolution enhancement process is completed when the allowable critical difference is reached.

[0126] In this embodiment, the merging interval refers to a rule for merging pixels in an image to be displayed, specifically, a standard corresponding to the merging of pixels.

[0127] In this embodiment, segment division refers to dividing the pixels into components according to the merging interval, so as to merge the pixels in each segment and achieve the purpose of reducing the resolution.

[0128] In this embodiment, the detail segmentation amount refers to a specific value for segmenting the details of each pixel, and the purpose is to refine the details of the pixel to achieve the purpose of improving the resolution.

[0129] In this embodiment, the allowable critical difference refers to the minimum difference between the resolution of the image to be displayed and the supportable resolution.

[0130] The working principle and beneficial effects of the above technical solution are: first determine the relative size relationship between the resolution of the image to be displayed and the supported resolution. If the resolution of the image to be displayed is high, determine the pixel merging interval according to the adjustment parameter to divide the segments, and then merge the pixels of each segment to reduce the resolution. If the resolution of the image to be displayed is low, determine the detail splitting amount of each pixel according to the adjustment parameter and interpolate to improve the resolution. In the process of improving the resolution, the process will be monitored based on the allowable critical difference. When the requirement is met, the enhancement will be stopped to achieve accurate adjustment of the resolution according to the specific situation so that it can better adapt to the display screen. At the same time, reducing the resolution at high resolution can avoid image blur, and enhancing the resolution at low resolution can improve the clarity, which are all helpful to optimize the display effect and maintain a reasonable balance of image quality.

[0131] Embodiment 7:

[0132] On the basis of Example 1, this embodiment provides a direct drive display method for an LED display screen without a sending card and a receiving card. In step 2, a driving signal for each display pixel in the LED display screen is generated based on the preprocessing result and the display requirement, and each display pixel is synchronously driven based on the driving signal, including:

[0133] Acquire the size information of the LED display screen, and adaptively adjust the size of the preprocessed image to be displayed based on the size information;

[0134] Based on the adaptive size adjustment result, the image to be displayed is mapped on the LED display screen in the same proportion, and based on the same proportion mapping result, a mapping relationship between each image pixel in the image to be displayed and each display pixel in the LED display screen is obtained;

[0135] Based on the mapping relationship, a pixel layout of the image to be displayed on the LED display screen is obtained, and based on the pixel layout result, personalized display content of each display pixel for the image to be displayed is determined;

[0136] Determine the image color data of each display pixel of the image to be displayed based on the personalized display content, and perform color coding conversion on the image color data of each display pixel based on the configuration parameters of the LED display screen to obtain a color coding signal of each display pixel;

[0137] Acquiring display requirements based on the management terminal, and determining display brightness of different pixel areas in the image to be displayed according to the display requirements;

[0138] Determine the brightness coding signal of each pixel based on the display brightness, and at the same time, extract the characteristic parameters of the LED display screen, and analyze the characteristic parameters to obtain the pixel scanning order and pixel refresh time interval of the LED display screen;

[0139] Based on the pixel scanning sequence and the pixel refresh time interval, the row scanning timing and the column driving timing of the LED display are obtained, and the row scanning timing and the column driving timing are respectively integrated with the position coordinates, color coding signals and brightness coding signals of each pixel in the LED display, and the driving signal of each display pixel in the LED display is obtained based on the integrated results;

[0140] The driving signal is read based on the core signal processing board in the LED display screen, and the dot matrix scanning data is output based on the reading result. At the same time, the output time parameter of the driving chip in the LED display screen is obtained, and the output time parameter is used as the signal frame duration of the dot matrix scanning data output by the core signal processing board;

[0141] Based on the preset transmission circuit, the dot matrix scanning data and the corresponding signal frame duration are distributedly sent to each logic board of the LED display screen, and each display pixel in the LED display screen is synchronously driven based on each logic board.

[0142] In this embodiment, the adaptive size adjustment refers to adjusting the size of the image to be displayed according to the size of the LED display screen, so as to ensure that the image to be displayed can be displayed in the effective display area of ​​the LED display screen.

[0143] In this embodiment, the same-scale mapping refers to displaying the image to be displayed after the size adjustment on the LED display screen according to the adaptive size adjustment result.

[0144] In this embodiment, the mapping relationship refers to the corresponding relationship between each image pixel in the image to be displayed and each display pixel in the LED display screen.

[0145] In this embodiment, the pixel layout refers to the distribution of each pixel of the image to be displayed on the LED display screen.

[0146] In this embodiment, the personalized display content refers to the specific image content that needs to be displayed when each display pixel displays the content in the image to be displayed.

[0147] In this embodiment, the image color data refers to the image color situation that needs to be presented on each display pixel, including the color type and the corresponding specific value.

[0148] In this embodiment, color coding conversion refers to converting the format of image color data into a digital signal that can be recognized by the LED display driver chip, wherein the color coding is the result obtained after color coding conversion of the image color data.

[0149] In this embodiment, the display requirement refers to specific parameters that the management terminal limits on display brightness of the image to be displayed.

[0150] In this embodiment, the brightness coding signal refers to a brightness code generated according to the display brightness, that is, a brightness signal that can be recognized by the LED display screen driving chip.

[0151] In this embodiment, the core signal processing board is a component in the LED display screen. The core signal processing board directly outputs dot matrix scanning data, and one core board replaces 16 receiving cards to drive the LED dot matrix; the time for the LED driver chip to output 16 bits is used as the signal frame duration of the high-speed serial signal output of the core signal processing board. The commonly used clock frequency of the LED driver chip is 12.5MHz, and the display data is 16 bits, so the data frequency is 781.25KHz, and the signal frame frequency of the high-speed serial signal output is also 781.25KHz. The logic board only needs the memory of the FPGA to cache this frame of data, and no external memory chip is required.

[0152] In this embodiment, the preset transmission circuit is a line set in advance and used to transmit electrical signals.

[0153] In this embodiment, the logic board is a component in the LED display screen, and is used to synchronously drive each display pixel in the LED display screen.

[0154] The working principle and beneficial effects of the above technical solution are: first, the size information of the LED display screen is obtained to adjust the size of the image to be displayed, a mapping relationship between image pixels and display pixels is established, the pixel layout and personalized display content are determined, and then the image color data is obtained and converted into a color coding signal. The display brightness and brightness coding signal are determined according to the display requirements of the management terminal, and the characteristic parameters of the display screen are analyzed to obtain the scanning order and refresh interval, and then the driving signal of each display pixel is obtained comprehensively. Finally, the driving signal is transmitted through a preset transmission circuit and the synchronous driving of the display pixels is realized to ensure that the image can be accurately adapted to the display screen. At the same time, accurate color and brightness control improves the display quality and effect, and a reasonable driving signal generation and transmission mechanism ensures the synchronization and stability of the display.

[0155] Embodiment 8:

[0156] On the basis of Example 7, this embodiment provides a direct drive display method for an LED display screen without a sending card and a receiving card, and obtains a driving signal for each display pixel in the LED display screen based on the comprehensive result, including:

[0157] Obtain the obtained driving signal and construct a virtual model of the LED display screen in a computer;

[0158] Based on the construction results, the obtained driving signal is used to build a signal driving simulation scene in the computer, and based on the construction results, the virtual model of the LED display screen is simulated and driven according to the driving signal;

[0159] At the same time, during the simulation drive, the current and voltage values ​​of the virtual model of the LED display screen during operation are monitored in real time, and the current and voltage values ​​are balanced;

[0160] Determine the display state of the image to be displayed on the LED display screen based on the equalization processing structure and the simulation driving result, and determine the abnormal display characteristics when the display state does not meet the preset requirements;

[0161] The parameters of the driving signal are adjusted based on the abnormal display characteristics until the display state meets the preset requirements.

[0162] In this embodiment, the signal-driven simulation scene construction refers to building a virtual operating environment of the LED display screen in a computer.

[0163] In this embodiment, the preset requirement is set in advance and is used to represent the display purpose to be achieved.

[0164] In this embodiment, the abnormal display feature refers to the LED display screen not meeting the preset display screen or parameters when performing analog display, such as resolution or color signal.

[0165] The working principle and beneficial effects of the above technical solution are: first obtain the driving signal, then build a virtual model of the LED display screen in the computer, then build a signal-driven simulation scene in the virtual environment, use the driving signal to simulate the driving of the virtual model, observe the display state after the simulated driving, and if it does not meet the preset requirements, adjust the parameters of the driving signal according to the abnormal display characteristics, and repeat this process until the display state meets the preset requirements. The driving signal can be verified and adjusted before actual application to avoid modifications after problems occur on real equipment, improve efficiency, reduce hardware damage or re-debugging costs caused by unreasonable driving signals, make the driving signal more reliable, and enhance the stability of the entire display system.

[0166] Embodiment 9:

[0167] Based on Example 1, this embodiment provides a method for directly driving an LED display screen without a sending card and a receiving card, such as Figure 3 As shown, in step 3, the image to be displayed is displayed based on the synchronous driving result, including:

[0168] Step 301: Controlling the display pixels in the LED display screen to coordinate and associate based on the synchronous driving result, and displaying the image to be displayed based on the coordinated association result;

[0169] Step 302: monitor the display state of the image to be displayed on the LED display screen in real time, and obtain a display state representation sequence of the image to be displayed based on the real-time monitoring result;

[0170] Step 303: Generate an image display record log based on the display state representation sequence, and archive and store the generated image display record log.

[0171] In this embodiment, the display state representation sequence refers to the display conditions of the image to be displayed on the LED display screen at different times obtained after real-time monitoring of the display state of the image to be displayed on the LED display screen.

[0172] The working principle and beneficial effects of the above technical solution are: through the synchronous driving results, the display pixels are coordinated and associated with each other, so as to present the image to be displayed in a coordinated manner; the display status of the image on the display screen is obtained in real time by monitoring means, and these states are organized into a display status representation sequence; an image display record log is created according to the display status representation sequence, and it is saved for archiving; the coordinated work of the display pixels is ensured, so that the image display is more accurate, clear and stable; the display status is monitored and recorded in real time to improve the controllability of the display quality; the generated record log is archived and stored, which is helpful for subsequent analysis, tracing and optimization, and is of great significance to improving the display effect and system performance. It also provides a basis for troubleshooting.

[0173] Embodiment 10:

[0174] On the basis of Example 1, this embodiment provides a direct-drive display method for an LED display screen without a sending card and a receiving card. In step 3, a dynamic update instruction of a management terminal is received according to the display result, and a display screen on the LED display screen is dynamically updated based on the dynamic update instruction, including:

[0175] Based on the display results, the communication status between the management terminal and the LED display screen is monitored in real time, and when the dynamic update instruction sent by the management terminal is monitored, the dynamic update instruction is parsed to obtain the update characteristics of the display screen in the LED display screen;

[0176] Based on the update characteristics, the update elements and update parameters of the display picture in the LED display screen are determined, and the display picture on the LED display screen is dynamically updated based on the update elements and update parameters.

[0177] In this embodiment, the update feature refers to the specific content that needs to be updated on the display screen of the LED display screen.

[0178] In this embodiment, the update element refers to a specific object that needs to be updated in the display screen of the LED display screen, for example, it may be a character in the display screen.

[0179] In this embodiment, the update parameter refers to the specific content and degree that needs to be updated when updating the update element.

[0180] The working principle and beneficial effects of the above technical solution are: first, the communication status between the management terminal and the LED display screen is monitored in real time, and when a dynamic update instruction is detected, the dynamic update instruction is parsed to clarify the specific features of the display screen that need to be updated. Then, the update elements (such as specific areas, specific pixels, etc.) and related update parameters (such as color, brightness and other change values) are determined according to the update characteristics, and finally the display screen is actually dynamically updated according to the determined content; the controllability and adaptability of the display screen are enhanced to meet the rapidly changing display requirements in different scenarios; at the same time, real-time monitoring of the communication status ensures that the update instruction can be received and processed in a timely manner, ensuring the timeliness and accuracy of the update, and also helps to improve the intelligence and interactivity of the entire system.

[0181] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for directly driving an LED display screen without sending cards and receiving cards, characterized in that: include: Step 1: Receive the image to be displayed output by the user end based on the data interface of the LED display screen, and pre-process the image to be displayed based on the driver chip; Step 2: Generate a driving signal for each display pixel in the LED display screen based on the preprocessing result and display requirements, and synchronously drive each display pixel based on the driving signal; Step 3: Display the image to be displayed based on the synchronous driving result, receive the dynamic update instruction of the management terminal according to the display result, and dynamically update the display screen on the LED display screen based on the dynamic update instruction.

2. A method for direct-driving an LED display screen without sending cards and receiving cards according to claim 1, characterized in that: In step 1, the data interface of the LED display screen receives the image to be displayed output by the computer, including: Get the data interface available for the LED display, read the script file of the LED display, and extract the basic communication parameters of the data interface; Perform communication protocol configuration based on basic communication parameters and the user-side signal interface, and build a communication link between the data interface and the user-side based on the configuration result; Signal activation is performed on the image to be outputted in the user terminal, and based on the signal activation result, the image signal to be displayed is transmitted to the LED display screen according to the established communication link, and the image signal to be displayed is decoded based on the LED display screen to obtain the image to be displayed.

3. A method for directly driving an LED display screen without sending cards and receiving cards according to claim 2, characterized in that: Based on the signal activation result, the image to be displayed is transmitted to the LED display screen according to the established communication link, including: Obtaining the screen display parameter requirements of the image to be displayed from the user end based on the signal activation result, and synchronously sending the screen display parameter requirements to the LED display screen based on the established communication link; Determine the timestamp of the received image to be displayed and the screen display parameter requirement based on the LED display screen, and associate the image to be displayed and the screen display parameter requirement at the same time node with the determined timestamp; Based on the object association result, a cache space is allocated for each image to be displayed in the LED display screen, and based on the object association result, the image to be displayed and the corresponding screen display parameter requirements are cached in the cache space.

4. The method for directly driving an LED display screen without sending cards and receiving cards according to claim 1, characterized in that: In step 1, the image to be displayed is preprocessed based on the driver chip, including: Acquire the image to be displayed, and analyze the image to be displayed to determine a first image format of the image to be displayed; Extracting characteristic parameters of the LED display screen, and determining an allowable second image format of the LED display screen based on the characteristic parameters; Matching the first image format of the image to be displayed with the allowable second image format of the LED display screen, and determining whether the first image format of the image to be displayed is supported by the allowable second image format based on the matching result, and if not supported, performing format conversion on the first image format of the image to be displayed based on the allowable second image format; At the same time, the resolution of the image to be displayed is extracted based on the analysis result of the image to be displayed, and the resolution of the image to be displayed is adaptively adjusted based on the format conversion result.

5. A method for directly driving an LED display screen without sending cards and receiving cards according to claim 4, characterized in that: Based on the format conversion result, the resolution of the image to be displayed is adaptively adjusted, including: Performing real-time monitoring on the format conversion process of the first image format of the image to be displayed, and obtaining, based on the real-time monitoring result, an execution parameter corresponding to each execution step when the format conversion of the image to be displayed is performed; Determine the image quality loss value of the image to be displayed when the format conversion is performed based on the execution parameter corresponding to each execution step, and start the resolution adjustment mechanism of the image to be displayed when the image quality loss value is within a preset threshold range; Extracting the supportable resolution of the LED display screen based on the startup result, and determining the adjustment direction and adjustment parameter of the resolution of the image to be displayed based on the relative size relationship between the resolution of the image to be displayed and the supportable resolution; Based on the adjustment direction, a corresponding adjustment method is adopted to adjust the resolution of the image to be displayed according to the adjustment parameter.

6. A method for direct-driving a LED display screen without sending cards and receiving cards according to claim 5, characterized in that: Based on the adjustment direction, a corresponding adjustment method is adopted to adjust the resolution of the image to be displayed according to the adjustment parameter, including: The obtained relative size relationship between the resolution of the image to be displayed and the supported resolution; If the resolution of the image to be displayed is higher than the supported resolution, determining a merging interval of pixels in the image to be displayed based on the adjustment parameter, and segmenting the pixels based on the merging interval; Merging pixels in each segment based on the segment division result, and reducing the resolution of the image to be displayed based on the merged result; If the resolution of the image to be displayed is lower than the supported resolution, the detail splitting amount for each pixel is determined based on the adjustment parameter, and each pixel is interpolated based on the detail splitting amount; At the same time, the resolution of the image to be displayed is enhanced based on the interpolation result, and the resolution enhancement process is supervised based on the allowable critical difference between the resolution of the image to be displayed and the supported resolution, and the resolution enhancement process is completed when the allowable critical difference is reached.

7. The method for directly driving an LED display screen without sending cards and receiving cards according to claim 1, characterized in that: In step 2, a driving signal for each display pixel in the LED display screen is generated based on the preprocessing result and the display requirement, and each display pixel is synchronously driven based on the driving signal, including: Acquire the size information of the LED display screen, and adaptively adjust the size of the preprocessed image to be displayed based on the size information; Based on the adaptive size adjustment result, the image to be displayed is mapped on the LED display screen in the same proportion, and based on the same proportion mapping result, a mapping relationship between each image pixel in the image to be displayed and each display pixel in the LED display screen is obtained; The pixel layout of the image to be displayed on the LED display screen is obtained based on the mapping relationship, and the personalized display content of each display pixel for the image to be displayed is determined based on the pixel layout result; Determine the image color data of each display pixel of the image to be displayed based on the personalized display content, and perform color coding conversion on the image color data of each display pixel based on the configuration parameters of the LED display screen to obtain a color coding signal of each display pixel; Acquiring display requirements based on the management terminal, and determining display brightness of different pixel areas in the image to be displayed according to the display requirements; Determine the brightness coding signal of each pixel based on the display brightness, and at the same time, extract the characteristic parameters of the LED display screen, and analyze the characteristic parameters to obtain the pixel scanning order and pixel refresh time interval of the LED display screen; Based on the pixel scanning sequence and the pixel refresh time interval, the row scanning timing and the column driving timing of the LED display are obtained, and the row scanning timing and the column driving timing are respectively integrated with the position coordinates, color coding signals and brightness coding signals of each pixel in the LED display, and the driving signal of each display pixel in the LED display is obtained based on the integrated results; The driving signal is read based on the core signal processing board in the LED display screen, and the dot matrix scanning data is output based on the reading result. At the same time, the output time parameter of the driving chip in the LED display screen is obtained, and the output time parameter is used as the signal frame duration of the dot matrix scanning data output by the core signal processing board; Based on the preset transmission circuit, the dot matrix scanning data and the corresponding signal frame duration are distributedly sent to each logic board of the LED display screen, and each display pixel in the LED display screen is synchronously driven based on each logic board.

8. The method for directly driving an LED display screen without sending cards and receiving cards according to claim 7, characterized in that: Based on the comprehensive results, the driving signal of each display pixel in the LED display screen is obtained, including: Obtain the obtained driving signal and construct a virtual model of the LED display screen in a computer; Based on the construction results, the obtained driving signal is used to build a signal driving simulation scene in the computer, and based on the construction results, the virtual model of the LED display is simulated and driven according to the driving signal; At the same time, during the simulation drive, the current and voltage values ​​of the virtual model of the LED display screen during operation are monitored in real time, and the current and voltage values ​​are balanced; Determine the display state of the image to be displayed on the LED display screen based on the equalization processing result and the simulation driving result, and determine the abnormal display characteristics when the display state does not meet the preset requirements; The parameters of the driving signal are adjusted based on the abnormal display characteristics until the display state meets the preset requirements.

9. The method for directly driving an LED display screen without a sending card and a receiving card according to claim 1, characterized in that: In step 3, the image to be displayed is displayed based on the synchronous driving result, including: Controlling the display pixels in the LED display screen to coordinate and associate based on the synchronous driving result, and displaying the image to be displayed based on the coordinated association result; Monitor the display state of the image to be displayed on the LED display screen in real time, and obtain a display state representation sequence of the image to be displayed based on the real-time monitoring result; An image display record log is generated based on the display state representation sequence, and the generated image display record log is archived and stored.

10. The method for directly driving an LED display screen without a sending card and a receiving card according to claim 1, characterized in that: In step 3, a dynamic update instruction of the management terminal is received according to the display result, and the display screen on the LED display screen is dynamically updated based on the dynamic update instruction, including: Based on the display results, the communication status between the management terminal and the LED display screen is monitored in real time, and when the dynamic update instruction sent by the management terminal is monitored, the dynamic update instruction is parsed to obtain the update characteristics of the display screen in the LED display screen; Based on the update characteristics, the update elements and update parameters of the display picture in the LED display screen are determined, and the display picture on the LED display screen is dynamically updated based on the update elements and update parameters.

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