WO2023000620A1

WO2023000620A1 - Multi-screen display method and device

Info

Publication number: WO2023000620A1
Application number: PCT/CN2021/143411
Authority: WO
Inventors: 顾国梁; 董宇; 罗小伟; 汤鹏川; 胡明; 徐晟�
Original assignee: 展讯通信（上海）有限公司
Priority date: 2021-07-21
Filing date: 2021-12-30
Publication date: 2023-01-26
Also published as: CN113625981A

Abstract

A multi-screen display method, comprising: an AP chip generates a plurality of screen images (S210); if the difference between the resolution heights or the resolution widths of any two screen images in the plurality of screen images is greater than a preset difference, adjusting the resolution widths of the plurality of screen images to a first resolution width and/or adjusting the resolution heights of the plurality of screen images to a first resolution height, so as to obtain a plurality of intermediate images (S220); and splicing the plurality of intermediate images to obtain a target image (S230). By adjusting the resolution widths and/or the resolution heights of the plurality of screen images to the same value, it is possible to effectively solve the problem of screen flickering which occurs when different screen resolution heights or widths cause a certain display screen to blank continuously and lead to uneven refreshing. Further disclosed is a multi-screen display device.

Description

Multi-screen display method and device

technical field

The present application relates to the technical field of communications, and in particular to a multi-screen display method and device.

Background technique

With the vigorous development of display technology, the demand for dual-screen different display functions in consumer, financial payment, and commercial display markets is increasing. At present, the screen output of most application chips (Application Processor, AP) is usually a single mobile industry processor interface (Mobile Industry Processor Interface, MIPI) display serial interface (Display Serial Interface, DSI) interface, which can only connect to a single MIPI display screen. Because the MIPI DSI output bandwidth of the single-channel MIPI DSI AP chip is designed according to the bandwidth requirements of connecting a single display screen. Therefore, when the resolution widths and/or resolution heights of the multiple connected display screens are different, the problem of uneven refreshing of the display screens will be caused.

Contents of the invention

The embodiment of the present application provides a multi-screen display method and device, which can effectively solve the problem of screen flicker caused by multiple screens with different resolutions, heights and widths, resulting in too much continuous blanking of a certain screen, resulting in uneven refresh.

In the first aspect, the embodiment of the present application provides a multi-screen display method, which is applied to an AP chip, and the method includes:

Generate multiple screen images;

If the first difference is greater than the preset difference, adjust the resolution width of the multiple screen pictures to the first resolution width and/or adjust the resolution height of the multiple screen pictures to the first resolution height , to obtain multiple intermediate pictures, the first difference is the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures;

Stitching the multiple intermediate pictures to obtain the target picture;

The target picture is input to the adapter chip through the single-screen physical interface.

In the second aspect, the embodiment of the present application provides a multi-screen display method, which is applied to an adapter chip, and the method includes:

Segment the received target image to obtain multiple intermediate images;

Comparing the resolutions of the plurality of intermediate pictures with a plurality of target resolutions respectively, the target resolution being the screen resolution of the target screen corresponding to the intermediate pictures;

If the resolution of the intermediate picture is different from the target resolution, the resolution of the intermediate picture is adjusted to obtain multiple screen pictures, and the resolution of the screen picture is the same as the target resolution;

sending the multiple screen pictures to the multiple target screens respectively.

In a third aspect, an embodiment of the present application provides a multi-screen display device, which is applied to an AP chip, and the device includes:

a processing unit for generating multiple screen pictures;

The processing unit is further configured to adjust the resolution width of the plurality of screen pictures to the first resolution width and/or adjust the resolution width of the plurality of screen pictures if the first difference is greater than the preset difference. The height is adjusted to the first resolution height to obtain multiple intermediate pictures, and the first difference is the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures;

The processing unit is further configured to splice the multiple intermediate pictures to obtain a target picture;

A transceiver unit, configured to input the target picture to the adapter chip through the single-screen physical interface.

In a fourth aspect, the embodiment of the present application provides a multi-screen display device, which is applied to an adapter chip, and the device includes:

A processing unit, configured to segment the received target picture to obtain multiple intermediate pictures;

The processing unit is further configured to compare the resolutions of the plurality of intermediate pictures with a target resolution respectively, and the target resolution is a screen resolution of a target screen corresponding to the intermediate pictures;

The processing unit is further configured to adjust the resolution of the intermediate picture to obtain multiple screen pictures if the resolution of the intermediate picture is different from the target resolution, and the resolution of the screen picture is the same as the target resolution. same resolution;

A transceiver unit, configured to respectively send the multiple screen pictures to the multiple target screens.

In the fifth aspect, the embodiment of the present application provides a chip, the chip includes a processor, a memory, a communication interface, and one or more programs, and the one or more programs are stored in the memory and configured Executed by the processor, the program includes instructions for executing some or all of the steps described in the method described in the first aspect or the second aspect.

In the sixth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables the computer to execute the above-mentioned first aspect or the second aspect. Part or all of the steps described in the method described in the aspect.

In the seventh aspect, the embodiment of the present application provides a computer program product containing instructions, and when the computer program product is run on an electronic device, the electronic device executes the method described in the first aspect or the second aspect above .

In the technical solution provided by this application, the AP chip generates multiple screen pictures, and if the difference between the resolution height and/or resolution width of any two screen pictures in the multiple screen pictures is greater than the preset difference, multiple screen pictures Adjusting the resolution width of the picture to the first resolution width and/or adjusting the resolution height of multiple screen pictures to the first resolution height to obtain multiple intermediate pictures; splicing the multiple intermediate pictures to obtain the target picture. In this application, by adjusting the resolution width and/or resolution height of multiple screen pictures to the same value, it can effectively solve the problem that the resolution, height and width of multiple screens are different, so that too much continuous blanking of a certain display screen leads to uneven refresh. Screen flicker problem.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of a multi-screen display system provided by an embodiment of the present application;

FIG. 2 is a schematic flowchart of a multi-screen display method provided by an embodiment of the present application;

Fig. 3 is a schematic flowchart of another multi-screen display method provided by the embodiment of the present application;

Fig. 3a is a schematic diagram of screen picture compression and decompression provided by the embodiment of the present application;

Fig. 4 is a schematic flowchart of another multi-screen display method provided by the embodiment of the present application;

Fig. 4a is a schematic diagram of another screen picture compression and decompression provided by the embodiment of the present application;

Fig. 5 is a schematic flowchart of another multi-screen display method provided by the embodiment of the present application;

Fig. 6 is a schematic flowchart of another multi-screen display method provided by the embodiment of the present application;

FIG. 7 is a block diagram of functional units of a multi-screen display device provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a chip provided by an embodiment of the present application.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Among them, the MIPI interface is an open standard and a specification for mobile application processors initiated by the MIPI Alliance. complexity and increased design flexibility. The MIPI Alliance has different working groups (Work Group) to meet the different needs of each subsystem of the mobile terminal. Different working groups are responsible for formulating specific protocols, and define a set of internal interface standards for mobile devices for different hardware devices, such as camera serial interface CSI, display serial interface DSI, radio frequency interface DigRF, microphone/speaker interface SLIMbus, etc. .

At present, the screen output of most AP chips is usually a single-screen physical interface, which can only be connected to a single MIPI LCD screen. In order to achieve multi-screen display, the single MIPI DSI output of the AP chip must be converted to multiple One MIPI DSI output for connecting multiple screens. At present, there are some multi-screen display solutions that can be expanded by external SOC or FPGA chips, but these solutions usually use the AP chip to simply splicing multiple screen pictures left, right or up and down to form a picture and output it to an external expansion chip. , the external expansion chip demultiplexes the entire picture and then outputs it to multiple outputs to multiple LCD screens. Since the MIPI DSI output bandwidth of the single MIPI DSI AP chip is designed according to the bandwidth requirements of a single LCD screen, when multiple (two or more) LCD screens are connected, if multiple (two or more) LCD screens are connected at the same time, if multiple (two or more) ) The resolution of the LCD screen is different in width and height, such as LCD_1: 1080×1920, LCD_2: 1080×960, then when the adapter chip or FPGA refreshes the two screens synchronously, LCD_2 may appear screen flicker due to uneven refresh Phenomenon.

In order to solve the above problems, this application proposes a multi-screen display method. The AP chip generates multiple screen pictures. If the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures is greater than the preset difference, adjust the resolution width of multiple screen pictures to the first resolution width and/or adjust the resolution height of multiple screen pictures to the first resolution height to obtain multiple intermediate pictures, and then multiple intermediate pictures The pictures are spliced and combined into one image, which is output to the adapter chip through the single-screen physical interface. The adapter chip first demultiplexes the received spliced pictures into multiple screen pictures, then restores the screen pictures that have been adjusted in resolution, and outputs the processed multiple screen pictures synchronously to multiple screen pictures. Displaying on the screen can solve the problem of screen flicker caused by uneven refresh when multiple screen resolutions are different in height.

The present application will be described in detail below in combination with specific embodiments.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a multi-screen display system provided by an embodiment of the present application. The multi-screen display system includes an AP chip 10 , an adapter chip 20 and multiple display screens 30 . Among them, the AP chip is used to generate the screen picture displayed on each display screen 30, and after the screen picture is processed, it is transmitted to the adapter chip 20 through a single MIPI DSI, and the adapter chip 20 is used to adjust the received screen picture Afterwards, it is sent to a plurality of display screens 30 line by line at the same time according to the preset frame rate, and the display screen 30 is connected to the adapter chip 20 in communication, and can receive and display the screen pictures transmitted by the AP chip 10 through the adapter chip 20, so that through a single MIPI DSI can realize multi-screen different display.

Specifically, the AP chip may include one or more processors, memories, WIFI modules, serial/parallel interfaces, and the like. Among them, the serial/parallel interface may include general purpose input/output (General Purpose Input Output, GPIO) interface, high-definition multimedia interface (High Definition Multimedia Interface, HDMI), general system interface CSI, single MIPI DSI and other physical interfaces. Wherein, the AP chip 10 can be connected with the adapter chip 20 through a single MIPI DSI, and the screen picture generated by the processor is transmitted to the adapter chip 20 through a single MIPI DSI. The WiFi module is used for wireless network communication.

The adapter chip 20 may include multiple DSI interfaces, and each DSI interface is connected to a display screen 30 . After the adapter chip 20 adjusts the received screen picture, it simultaneously sends it to the corresponding display screen 30 for display through the DSI interface.

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart of a multi-screen display method provided by an embodiment of the present application, which is applied to the AP chip shown in FIG. 1 . As shown in Figure 2, the method includes the following steps.

S210. Generate multiple screen pictures.

Wherein, the resolution of the screen picture is the same as the target resolution, and the target resolution is the screen resolution of the target screen corresponding to the screen picture. In practical applications, an electronic device may be connected to multiple display screens to display image content. When it is necessary to display on multiple display screens at the same time, the AP chip can first obtain the screen resolutions of multiple display screens, and then through the central processing unit (central processing unit, CPU) or graphics processing unit (Graphics Processing Unit, GPU) A plurality of screen pictures having the same screen resolution as the plurality of display screens are generated in the same manner.

For example, the resolution of the screen picture may also be different from the screen resolution of the target screen corresponding to the screen picture. For example, when the host at the front desk of a supermarket is connected to two display screens with different resolutions for display, the AP chip in the host can generate two screen pictures with the same resolution, and then the adapter chip in the host converts the screen pictures to The resolution is adjusted to match the screen resolution of the target screen and then sent to the monitor for display, or the adapter chip directly sends the screen picture to the monitor for display.

S220. If the first difference is greater than the preset difference, adjust the resolution width of the multiple screen pictures to the first resolution width and/or adjust the resolution height of the multiple screen pictures to the first resolution The first difference is the difference between the resolution height or the resolution width of any two screen pictures in the multiple screen pictures.

Wherein, the single-screen physical interface may be a single MIPI DSI. In order to solve the problem of screen flicker caused by uneven refresh of the display screen, the AP chip can adjust the resolution height and/or resolution width of a screen picture to the same value.

In a possible example, the AP chip calculates the difference between the resolution heights of any two screen images among the multiple screen images, and if the difference is greater than the preset difference, then the resolution pixel of the multiple screen images can be calculated. The width-to-height transformation makes the resolution heights of multiple screen images close to each other. Specifically: on the premise that the total number of pixels of each screen picture remains unchanged, the resolution pixels of the multiple screen pictures are converted to width and height, so that the resolution heights of the multiple screen pictures are all the first resolution width, the The first resolution height is less than or equal to the maximum resolution height of the MIPI of the single-screen physical interface. That is to say, if the first resolution height is a, when the resolution pixels of multiple screen pictures are converted to width and height, the resolution height of multiple screen pictures is adjusted to a, and the resolution width of each screen picture is adjusted to Adjusted to c/a, where c is the total number of pixels of the screen picture, that is, the product of the resolution width and the resolution height.

For example, when the resolution height of any screen picture in multiple screen pictures is greater than the maximum resolution height supported by a single MIPI DSI, the single MIPI DSI of the AP chip cannot simultaneously output the multiple screen pictures to the display screen for display At this time, the AP chip can adjust the resolution height of the multiple screen pictures, so that a single MIPI DSI can transmit the adjusted screen pictures. Specifically, first determine whether the resolution height of multiple screen images is greater than the maximum resolution height of the single-screen physical interface. If the resolution height of the screen image is greater than the maximum resolution height of the single-screen physical interface, then the screen image will be used as the resolution The width and height of pixels are transformed so that the resolution height of the screen picture is less than or equal to the maximum resolution height of the single-screen physical interface.

In another possible example, the AP chip calculates the difference between the resolution widths of any two screen images among the multiple screen images, and if the difference is greater than a preset difference, the multiple screen images can be distinguished The width and height transformation of high-speed pixels makes the resolution and width of multiple screen pictures close. Specifically: on the premise that the total number of pixels of each screen picture remains unchanged, the resolution pixels of the multiple screen pictures are converted to width and height, so that the resolution widths of the multiple screen pictures are all the first resolution width, The first resolution width is less than or equal to the maximum resolution width of the single-screen physical interface. That is to say, if the first resolution width is b, when the resolution pixels of multiple screen pictures are converted to width and height, the resolution width of multiple screen pictures is adjusted to b, and the resolution height of each screen picture is adjusted to Adjusted to c/b, where c is the total number of pixels of the screen image, that is, the product of the resolution width and the resolution height.

For example, when the resolution width of any screen picture in multiple screen pictures is greater than the maximum resolution width supported by a single MIPI DSI, the single MIPI DSI of the AP chip cannot simultaneously output the multiple screen pictures to the display screen for display , the AP chip can adjust the resolution width of the multiple screen pictures, so that a single MIPI DSI can transmit the adjusted screen pictures. Specifically, first determine whether the resolution width of multiple screen images is greater than the maximum resolution width of the single-screen physical interface. If the resolution width of the screen image is greater than the maximum resolution width of the single-screen physical interface, the screen image will be used as the resolution The width and height of the pixels are transformed so that the resolution width of the screen picture is less than or equal to the maximum resolution width of the single-screen physical interface.

It should be noted that the AP chip can preset store the preset difference, such as 700, 200, 100, etc., and the AP chip can also set the preset difference according to actual application scenarios, which is not limited here.

S230. Concatenate the multiple intermediate pictures to obtain a target picture.

Among them, if the difference between the resolution widths of any two screen pictures in the multiple screen pictures is greater than the preset difference, then after the width and height of the multiple screen pictures are transformed, the AP chip then divides the multiple intermediate pictures according to the row direction Stitching, that is, multiple intermediate pictures are spliced left and right to obtain the target picture. If the difference between the resolution heights of any two screen pictures in the multiple screen pictures is greater than the preset difference, after the width and height of the multiple screen pictures are transformed, the AP chip will then splice the multiple intermediate pictures according to the column direction , that is, multiple intermediate pictures are spliced up and down to obtain the target picture.

S240. Input the target picture to the adapter chip through the single-screen physical interface.

After obtaining the target picture, the AP chip outputs the stitched picture to the SOC or FPGA chip through a single MIPI DSI for transfer.

It can be seen that this application proposes a multi-screen display method. The AP chip generates multiple screen pictures. If the first difference is greater than the preset difference, the resolution width of the multiple screen pictures is adjusted to the first resolution width. And/or adjust the resolution height of multiple screen pictures to the first resolution height to obtain multiple intermediate pictures, the first difference is the resolution height or resolution of any two screen pictures in the multiple screen pictures The difference between the width and width of multiple screens; multiple intermediate pictures are spliced to obtain the target picture; by adjusting the resolution width and/or resolution height of multiple screen pictures to the same value, it can effectively solve the problem of different screen resolution heights and widths. There is a screen flickering problem caused by uneven refresh due to too much continuous blanking of a certain display screen.

Please refer to FIG. 3 . FIG. 3 is a schematic flowchart of another multi-screen display method provided by an embodiment of the present application, which is applied to the AP chip as shown in FIG. 1 . As shown in Figure 3, the method includes the following steps.

S310. Generate multiple screen pictures.

S320. If the first difference is greater than the preset difference, adjust the resolution heights of the plurality of screen pictures to the first resolution height to obtain a plurality of intermediate pictures, the first difference being the plurality of screens The difference between the resolution heights of any two screen images in the image.

Wherein, the single-screen physical interface may be a single MIPI DSI. The AP chip calculates the difference between the resolution heights of any two screen images among multiple screen images. If the difference is greater than the preset difference, then on the premise that the total number of pixels of each screen image remains unchanged, more than the The width and height of the resolution pixels of multiple screen pictures are converted, so that the resolution heights of the multiple screen pictures are close to each other. That is to say, if the first resolution height is a, when the resolution pixels of multiple screen pictures are converted to width and height, the resolution height of multiple screen pictures is adjusted to a, and the resolution width of each screen picture is adjusted to Adjusted to c/a, where c is the total number of pixels of the screen picture, that is, the product of the resolution width and the resolution height.

For example, the AP chip can also compare the resolution height of multiple screen pictures with the maximum resolution height of the single-screen physical interface. If the resolution height of the screen picture is greater than the maximum resolution height of the single-screen physical interface, the The width and height of the resolution pixels of the screen picture are converted, so that the resolution height of the screen picture is less than or equal to the maximum resolution height of the single-screen physical interface, so that a single MIPI DSI can output multiple screen pictures to the display screen at the same time. show.

S330. Stitch the multiple intermediate pictures according to a first direction to obtain a stitched picture, where the first direction is a row direction of the intermediate picture.

Among them, when the resolution width of multiple intermediate pictures obtained after the AP chip changes the width and height of multiple screen pictures exceeds the maximum resolution width supported by a single MIPI DSI, the AP chip can adjust the resolution of multiple screen pictures The width is compressed so that a single MIPI DSI can transmit resized screen images.

In the embodiment of this application, in this application, the AP chip can splice multiple intermediate pictures according to the row direction of the intermediate pictures, that is, to splice multiple intermediate pictures left and right to determine the sum of the resolution widths of multiple screen pictures. Whether it is greater than the maximum resolution width of the single-screen physical interface.

S340. If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution width of the stitched image is greater than the maximum resolution width of the single-screen physical interface, send The spliced picture or at least one screen picture is subjected to pixel compression along the first direction, or the spliced picture or the at least one screen picture is subjected to chroma compression to obtain the plurality of intermediate pictures.

Wherein, if the resolution width of the spliced image obtained by splicing multiple screen images × frame rate is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution width of the spliced image is greater than the maximum resolution width of the single-screen physical interface , it indicates that the single-screen physical interface of the AP chip cannot transmit the spliced picture. At this time, the AP chip can directly compress the spliced pictures or at least one intermediate picture with a higher resolution height along the row direction, and the AP chip can also directly compress the spliced pictures or at least one intermediate picture with a higher resolution height. Pigment compression is performed on the intermediate pictures, so that the single-screen physical interface can transmit the multiple intermediate pictures and realize multi-screen display on the single-screen physical interface.

Wherein, the pixel compression may be performing linear filtering and down-sampling of pixel RGB color components on the intermediate picture and the spliced picture, such as bilinear filtering and down-sampling. The pixel compression is to compress the resolution width of the intermediate picture or the spliced picture. Described chromaticity compression can be the RGB888 format that intermediate picture or mosaic picture is converted into the RGB565 format of 16bit or the YUV420 format of 12bit, and chromaticity compression can carry out to the resolution width and resolution height of intermediate picture, mosaic picture at the same time Compression, so that the resolution of the intermediate picture or the stitched picture can be reduced, and the data volume of the intermediate picture or the stitched picture can be reduced.

S350. Concatenate the multiple intermediate pictures to obtain a target picture.

Wherein, after processing the multiple intermediate pictures according to the row direction, the AP chip then stitches the multiple intermediate pictures according to the row direction, that is, stitches the multiple intermediate pictures left and right to obtain the target picture.

S360. Input the target picture to the adapter chip through the single-screen physical interface.

For example, the maximum output bandwidth of a single MIPI AP chip can support a single 1920×1080 60FPS screen, the pixel width of the image output by MIPI is limited to 1920 in the row direction, that is, the maximum resolution width is 1920, and the resolution of display screen 1 is 1920×1080 60FPS, the resolution of display screen 2 is 1200×540 60FPS.

Among them, the AP chip first draws two screen pictures with the screen resolution of the two output display screens through the CPU or GPU, which are recorded as screen picture 1: 1920×1080 60FPS and screen picture 2: 1200×540 60FPS. The sum of the resolution widths of screen 1 and screen 2 exceeds 1920, and the resolution and height of screen picture 1 and screen picture 2 are very different. Therefore, as shown in Figure 3a, the AP chip converts the width and height of screen picture 2 into pixels. The resolution of screen picture 2 is changed from 1200×540 to 600×1080, and the pixels of screen picture 1 are compressed in the row direction, that is, each component of the three RGB color components of screen picture 1 is filtered by 1/2 of FIR The down-sampling method realizes 1/2 compression, so that the resolution of screen picture 1 is compressed from 1920×1080 to 960×1080. Finally, the total resolution of the processed screen picture 1 and screen picture 2 is 1560×1080, and the frame rate is 60FPS, both of which are less than the maximum output bandwidth, so it can be output from the AP chip single MIPI line by line to the SOC or FPGA chip for transfer .

In this application, when the difference between the resolution heights of any two screen pictures is large, the width and height of the screen pictures can be transformed to solve the problem of continuous blanking (Blanking) of a certain screen caused by different screen resolution widths. Too many screen flickering issues causing uneven refresh. At the same time, when the sum of the resolution widths of multiple screen pictures is greater than the maximum output bandwidth of a single-screen physical interface, the embodiment of the present application compresses the resolution widths of multiple intermediate pictures to realize multi-screen display through a single-screen physical interface. Display, and can effectively solve the problem of limited bandwidth of the single-screen physical interface.

Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of another multi-screen display method provided by an embodiment of the present application, which is applied to the AP chip as shown in FIG. 1 . As shown in Figure 4, the method includes the following steps.

S410. Generate multiple screen pictures.

S420. If the first difference is greater than the preset difference, adjust the resolution widths of the multiple screen pictures to the first resolution width to obtain multiple intermediate pictures, the first difference being the multiple screens The difference between the resolution widths of any two screen images in the image.

Wherein, the single-screen physical interface may be a single MIPI DSI. The AP chip calculates the difference between the resolution widths of any two screen images among multiple screen images. If the difference is greater than the preset difference, then on the premise that the total number of pixels of each screen image remains unchanged, more than the The width and height of resolution pixels are transformed for multiple screen pictures, so that the resolution widths of multiple screen pictures are close to each other. That is to say, if the first resolution width is b, when the resolution pixels of multiple screen pictures are converted to width and height, the resolution width of multiple screen pictures is adjusted to b, and the resolution height of each screen picture is adjusted to Adjusted to c/b, where c is the total number of pixels of the screen image, that is, the product of the resolution width and the resolution height.

For example, the AP chip can also compare the resolution width of multiple screen pictures with the maximum resolution width of a single-screen physical interface. If the resolution width of a screen picture is greater than the maximum resolution width of a single-screen physical interface, the The width and height of the resolution pixels of the screen picture are transformed, so that the resolution width of the screen picture is less than or equal to the maximum resolution width of the single-screen physical interface, so that a single MIPI DSI can output multiple screen pictures to the display screen at the same time. show

S430. Stitch the multiple intermediate pictures according to a second direction to obtain a stitched picture, where the second direction is a column direction of the intermediate pictures.

Among them, when the resolution height of multiple intermediate pictures obtained after the AP chip changes the width and height of multiple screen pictures exceeds the maximum resolution height supported by a single MIPI DSI, the AP chip can adjust the resolution of multiple screen pictures Highly compressed so that single MIPI DSI can transmit resized screen images.

In the embodiment of this application, in this application, the AP chip can splice multiple intermediate pictures according to the column direction of the intermediate pictures, that is, to splice multiple intermediate pictures up and down to determine the sum of the resolution heights of multiple screen pictures. Whether it is greater than the maximum resolution height of the single-screen physical interface.

S440. If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution height of the stitched image is greater than the maximum resolution height of the single-screen physical interface, set Perform pixel compression on the spliced picture or at least one intermediate picture along the second direction, or perform chroma compression on the spliced picture or at least one intermediate picture.

In this embodiment of the application, if the resolution height of the spliced image obtained by splicing multiple screen images × frame rate is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution height of the spliced image is greater than the single-screen physical interface The maximum resolution height of the AP chip indicates that the single-screen physical interface of the AP chip cannot transmit the spliced image. At this time, the AP chip can directly compress the pixels of the spliced pictures or at least one intermediate picture with a higher resolution along the column direction, and the AP chip can also directly compress the spliced pictures or at least one of the middle pictures with a higher resolution. Pigment compression is performed on the intermediate pictures, so that the single-screen physical interface can transmit the multiple intermediate pictures and realize multi-screen display on the single-screen physical interface.

Wherein, the pixel compression may be a linear filter downsampling of the RGB color components of the intermediate picture and the spliced picture, such as bilinear filter downsampling, etc., which is to compress the resolution width of the intermediate picture and the spliced picture. Described chromaticity compression can be the RGB888 format that intermediate picture or mosaic picture is converted into the RGB565 format of 16bit or the YUV420 format of 12bit from 24bit RGB888 format, and it can compress the resolution width and the resolution height of intermediate picture, mosaic picture at the same time, Furthermore, the resolution of the intermediate picture or the spliced picture can be reduced, and the data volume of the intermediate picture or the spliced picture can be reduced.

S450. Concatenate the multiple intermediate pictures according to the second direction to obtain a target picture.

Wherein, after processing the multiple intermediate pictures according to the column direction, the AP chip then stitches the multiple intermediate pictures according to the column direction, that is, stitches the multiple intermediate pictures up and down to obtain the target picture.

S460. Input the target picture to the adapter chip through the single-screen physical interface.

For example, the maximum output bandwidth of a single MIPI AP chip can support a single 1080×1200 60FPS screen, the pixel height of the MIPI output image column direction is limited to 1200, that is, the maximum resolution height is 1200, and the resolution of display screen 1 is 540×800 60FPS, the resolution of display screen 2 is 1080×1200 60FPS.

Among them, the AP chip first draws two screen pictures with the screen resolution of the two output display screens through the CPU or GPU. The sum of the resolution heights of screen 1 and screen 2 exceeds 1200, and the resolution width of screen picture 1 and screen picture 2 is very different. Therefore, as shown in Figure 4a, the AP chip converts the pixel width and height of screen picture 1, Transform the resolution of screen picture 1 from 540×800 to 1080×400, and compress the pixels of screen picture 2 in the column direction, that is, use FIR filtering for each component of the three RGB color components of screen picture 2 1/ 2 The down-sampling method realizes 1/2 compression, so that the resolution of screen image 1 is compressed from 1080×1200 to 1080×600. Finally, the total resolution of the processed screen picture 1 and screen picture 2 is 1080×1000, and the frame rate is 60FPS, both of which are less than the maximum output bandwidth, so it can be output by the single MIPI of the AP chip to the SOC or FPGA chip for transfer .

In this application, when the difference between the resolution widths of any two screen pictures is large, the width and height of the screen pictures can be transformed to solve the problem of continuous blanking (Blanking) of a certain screen caused by different screen resolution widths. Too many screen flickering issues causing uneven refresh. At the same time, when the resolution height of multiple screen images is greater than the maximum output bandwidth of a single-screen physical interface, by compressing the screen images, multiple screens can be displayed through a single-screen physical interface, and the single-screen physical interface can be effectively resolved. Bandwidth limited issues.

Please refer to FIG. 5 . FIG. 5 is a schematic flowchart of another multi-screen display method provided by an embodiment of the present application, which is applied to the adapter chip shown in FIG. 1 . As shown in Fig. 6, the method includes the following steps.

S510. Segment the received target picture to obtain multiple intermediate pictures.

Among them, the adapter chip receives the target picture transmitted by the AP chip through the DSI interface, and then reads the target picture line by line. If the AP chip is spliced according to the row direction to obtain the spliced image, the adapter chip decomposes the target picture according to the row direction. It is used as multiple intermediate pictures; if the AP chip is spliced according to the column direction to obtain the spliced image, the adapter chip demultiplexes the target picture into multiple intermediate pictures according to the column direction. In this way, the intermediate picture is divided to obtain multiple intermediate pictures. The split position of the middle picture can be notified by the AP chip to the switch chip by sending a control signal.

S520. Compare the resolutions of the multiple intermediate pictures with multiple target resolutions respectively, where the target resolution is a screen resolution of a target screen corresponding to the intermediate pictures.

Specifically, in order to enable the display screen to display the screen picture normally, the adapter chip can compare the resolution of the intermediate picture with multiple target resolutions to determine whether the intermediate picture has undergone compression processing and/or aspect conversion processing, etc. .

S530. If the resolution of the intermediate picture is different from the target resolution, adjust the resolution of the intermediate picture to obtain multiple screen pictures, where the resolution of the screen pictures is the same as the target resolution.

Wherein, the target resolution is the screen resolution of the display screen. By comparing the resolution of the intermediate pictures with the target resolution, the intermediate pictures requiring resolution adjustment can be determined.

Optionally, the adjusting the resolution of the intermediate picture includes: if the resolution width of the intermediate picture is smaller than the width of the target resolution, adjusting the resolution of the intermediate picture to the target Resolution width; if the resolution height of the intermediate picture is smaller than the target resolution height, adjust the resolution height of the intermediate picture to the target resolution height.

For example, if the resolution of the screen picture generated by the AP chip is the same as the screen resolution of the corresponding display screen, the adapter chip can decompress the compressed intermediate picture, and the intermediate picture that has undergone width-height conversion The aspect ratio of the picture is restored, so as to directly obtain a screen picture with the same screen resolution as the corresponding display screen.

For example, if the resolution of the screen picture generated by the AP chip is not the same as the screen resolution of the corresponding display screen, the adapter chip can re-decompress the screen picture after decompression processing and/or restoration of the aspect ratio. The resolution is adjusted so that the resolution of the final screen picture is the same as the screen resolution of the corresponding display screen, and the screen picture can also be directly sent to the display screen for display.

Specifically, if any one of the multiple intermediate pictures has undergone pixel linear compression or chroma compression, linear de-filtering and upsampling is performed on the pixel-compressed intermediate pictures line by line to complete resolution adjustment, and Perform chroma conversion (eg convert from RGB565 to RGB888) on the chroma-compressed intermediate image (such as converting from RGB888 to RGB565) to complete the chroma adjustment. If any of the multiple intermediate pictures has undergone aspect ratio transformation, the intermediary images that have undergone aspect ratio transformation and have been read in line by line will be output line by line with the normal line width, so as to restore the aspect ratio. To get multiple screen pictures.

For example, as shown in Figure 3a, the adapter chip reads in the pictures output by the AP chip of the single-screen physical interface line by line, and performs left and right demultiplexing to obtain the line-by-line pixels of screen picture 1 and screen picture 2. Then, each of the three RGB color components of the pixel RGB of the screen picture 1 is decompressed line by line by using FIR filtering 2 times upsampling method, and output to the MIPI interface of the screen 1 line by line, so that the resolution of the screen picture 1 The resolution is restored from 960×1080 to 1920×1080. For screen picture 2, read in line by line with 600 pixels and output line by line with 1200 pixels to the MIPI interface of screen 2, complete the restoration of pixel width and height, and restore the resolution of screen picture 2 from 600×1080 to 1200 ×540. Finally, screen picture 1 and screen picture 2 are refreshed and displayed on the two screens synchronously and progressively at 60FPS.

S540. Send the multiple screen pictures to the multiple target screens respectively.

Among them, after adjusting the target picture and obtaining multiple screen pictures, the adapter chip can simultaneously send multiple screen pictures to multiple MIPI DSI, LVDS, EDp and other display screens at the same time at a preset frame rate. , so that corresponding screen pictures are respectively displayed on the plurality of display screens.

It can be seen that in the multi-screen display method proposed by this application, the adapter chip divides the received target picture to obtain multiple intermediate pictures; the resolutions of the multiple intermediate pictures are compared with multiple target resolutions respectively, and the target resolution The rate is the screen resolution of the target screen corresponding to the middle picture; if the resolution of the middle picture is different from the target resolution, adjust the resolution of the middle picture to obtain multiple screen pictures, and the resolution of the screen picture is the same as the target resolution The rate is the same; send multiple screen pictures to multiple target screens respectively. This application is aimed at the AP chip output by the single-screen physical interface, and realizes the method of converting the output of the single-screen physical interface into multiple interfaces and connecting multiple display screens through an external adapter chip. At the same time, by adjusting the target picture into multiple screen pictures, Sending multiple screens to corresponding display screens for display can solve the problem of uneven refresh of the display screens when the resolutions of multiple screens are different in height.

Please refer to FIG. 6 . FIG. 6 is a schematic flowchart of another multi-screen display method provided by an embodiment of the present application, which is applied to the system shown in FIG. 1 . As shown in Fig. 6, the method includes the following steps.

S610 and AP chips generate multiple screen pictures;

S620. If the first difference is greater than the preset difference, the AP chip adjusts the resolution width of the multiple screen pictures to the first resolution width and/or adjusts the resolution height of the multiple screen pictures To the first resolution height, multiple intermediate pictures are obtained, and the first difference is the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures;

S630. The AP chip splices the multiple intermediate pictures to obtain a target picture;

S640. The AP chip inputs the target picture to the adapter chip through the single-screen physical interface.

Wherein, for the specific implementation manners of the foregoing S610-S640, reference may be made to the foregoing implementation manners in FIG. 2-FIG. 4, which will not be repeated here.

S650. The adapter chip divides the received target picture to obtain the multiple intermediate pictures;

S660. The adapter chip compares the resolutions of the plurality of intermediate pictures with the plurality of target resolutions respectively;

S670. If the resolution of the intermediate picture is different from the target resolution, the adapter chip adjusts the resolution of the intermediate picture to obtain the plurality of screen pictures;

S680. The adapter chip sends the multiple screen pictures to the multiple target screens respectively.

Wherein, the specific implementation manner of the foregoing S650-S680 may refer to the foregoing implementation manner in FIG. 5 , which will not be repeated here.

It can be seen that the multi-screen display method proposed in the embodiment of the present application is aimed at the AP chip with a single-screen physical interface. When the difference in width or resolution height is large, adjust the resolution width or resolution height of multiple screen images to the same value, and output them to the adapter chip through the single-screen physical interface. The adapter chip first demultiplexes the received spliced pictures into multiple screen pictures, then restores the screen pictures that have been adjusted in resolution width or resolution height, and then synchronously processes the processed multiple screen pictures one by one. Line refresh output to multiple screens for display, can realize multi-screen display through a single-screen physical interface, and can solve the problem of uneven display screen refresh when multiple screen resolutions are different in height.

The foregoing mainly introduces the solutions of the embodiments of the present application from the perspective of executing the process on the method side. It can be understood that, in order to realize the above functions, the network device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Please refer to FIG. 7 . FIG. 7 is a block diagram of functional units of a multi-screen display device 700 provided by an embodiment of the present application. The device 700 is applied to a chip, and the device 700 includes: a processing unit 710 and a transceiver unit 720 .

In a possible implementation manner, the apparatus 700 is configured to execute various processes and steps corresponding to the AP chip in the above indicating method.

The processing unit 710 is configured to generate multiple screen pictures;

The processing unit 710 is further configured to adjust the resolution width of the multiple screen pictures to the first resolution width and/or adjust the resolution width of the multiple screen pictures if the first difference is greater than the preset difference. The height of the screen is adjusted to the first resolution height to obtain multiple intermediate pictures, and the first difference is the difference between the resolution height or the resolution width of any two screen pictures in the multiple screen pictures;

The processing unit 710 is further configured to splice the multiple intermediate pictures to obtain a target picture;

The transceiver unit 720 is configured to input the target picture to the adapter chip through the single-screen physical interface.

Optionally, the processing unit 710 is further configured to: if the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, compress the multiple intermediate pictures.

Optionally, in terms of compressing the multiple intermediate pictures if the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, the processing unit 710 is specifically configured to:

Stitching the multiple intermediate pictures according to the first direction to obtain a spliced picture, the first direction being the row direction of the intermediate pictures; if the resolution × frame rate of the spliced image is greater than the single-screen physical interface and/or the resolution width of the spliced image is greater than the maximum resolution width of the single-screen physical interface, performing pixel compression on the spliced picture or at least one intermediate picture along the first direction, Or perform chroma compression on the spliced picture or the at least one intermediate picture.

Stitching the multiple intermediate pictures according to the second direction to obtain a spliced picture, the second direction being the column direction of the intermediate pictures; if the resolution × frame rate of the spliced image is greater than the single-screen physical interface The maximum output bandwidth, and/or the resolution height of the spliced image is greater than the maximum resolution height of the single-screen physical interface, and the pixel compression of the at least one intermediate picture is performed along the second direction, or the Perform chroma compression on the spliced picture or the at least one intermediate picture.

In another possible implementation manner, the device 700 is configured to execute various processes and steps corresponding to the adapter chip in the above indication method.

The processing unit 710 is configured to segment the received target picture to obtain multiple intermediate pictures;

The processing unit 710 is further configured to compare the resolutions of the multiple intermediate pictures with target resolutions respectively, where the target resolution is the screen resolution of the target screen corresponding to the intermediate pictures;

The processing unit 710 is further configured to adjust the resolution of the intermediate picture to obtain multiple screen pictures if the resolution of the intermediate picture is different from the target resolution, and the resolution of the screen picture is the same as the target resolution. The target resolution is the same;

The transceiving unit 720 is configured to respectively send the multiple screen pictures to the multiple target screens.

Optionally, in terms of adjusting the resolution of the intermediate picture, the processing unit 710 is specifically configured to: if the resolution width of the intermediate picture is smaller than the target resolution width, adjust the resolution of the intermediate picture to the target resolution width; if the resolution height of the intermediate picture is smaller than the target resolution height, adjust the resolution height of the intermediate picture to the target resolution height.

It should be understood that the apparatus 700 here is embodied in the form of functional units. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the device 700 can specifically be the AP chip and the switch chip in the above-mentioned embodiment, and the device 700 can be used to execute the method corresponding to the AP chip and the switch chip in the above-mentioned embodiment. In order to avoid repetition, the various processes and/or steps are not repeated here.

The device 700 in each of the above solutions has the function of realizing the corresponding steps performed by the AP chip and the adapter chip in the above method; the function can be realized by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit 720 can be replaced by a transmitter and a receiver, and the processing unit 710 can be replaced by a processor, respectively performing the transceiver operations in each method embodiment and related processing operations.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a chip provided by an embodiment of the present application. The chip includes: one or more processors, one or more memories, one or more communication interfaces, and one or more Programs; said one or more programs are stored in said memory and configured to be executed by said one or more processors.

In a possible implementation, the chip is an AP chip, and the above program includes instructions for performing the following steps:

Generate multiple screen images;

Stitching the multiple intermediate pictures to obtain the target picture;

In another possible implementation, the chip is a switch, and the above program includes instructions for performing the following steps:

Segment the received target image to obtain multiple intermediate images;

Wherein, all relevant content of each scene involved in the above method embodiments can be referred to the function description of the corresponding function module, and will not be repeated here.

It should be understood that the above-mentioned memory may include read-only memory and random-access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information.

In the embodiment of the present application, the processor of the above-mentioned device may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC) , Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It should be understood that "at least one" referred to in the embodiments of the present application refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .

And, unless otherwise stated, the ordinal numerals such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or priority of multiple objects. Importance. For example, the first information and the second information are only for distinguishing different information, and do not indicate the difference in content, priority, sending order, or degree of importance of the two kinds of information.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software units in the processor. The software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables the computer to execute some or all of the steps of any method described in the above method embodiments .

An embodiment of the present application further provides a computer program product including instructions, and when the computer program product is run on an electronic device, the electronic device is made to execute the method described in any one of the foregoing embodiments.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical or other forms.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the above-mentioned integrated units are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory. Several instructions are included to make a computer device (which may be a personal computer, server, or TRP, etc.) execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned memory includes: various media that can store program codes such as U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, and the memory can include: a flash disk , ROM, RAM, disk or CD, etc.

The embodiments of the present application have been introduced in detail above, and specific examples have been used in this paper to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application; at the same time, for Those skilled in the art will have changes in specific implementation methods and application ranges based on the ideas of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

A kind of multi-screen display method, is characterized in that, is applied to AP chip, and described method comprises:

Generate multiple screen images;

If the first difference is greater than the preset difference, adjust the resolution width of the multiple screen pictures to the first resolution width and/or adjust the resolution height of the multiple screen pictures to the first resolution height , to obtain multiple intermediate pictures, the first difference is the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures;

Stitching the multiple intermediate pictures to obtain the target picture;

The target picture is input to the adapter chip through the single-screen physical interface.
The method according to claim 1, further comprising:

If the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, compress the multiple intermediate pictures.
The method according to claim 2, wherein if the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, compressing the multiple intermediate pictures includes :

Stitching the plurality of intermediate pictures according to a first direction to obtain a stitched picture, the first direction being the row direction of the intermediate pictures;

If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution width of the stitched image is greater than the maximum resolution width of the single-screen physical interface, the Performing pixel compression along the first direction on the spliced picture or at least one intermediate picture, or performing chroma compression on the spliced picture or the at least one intermediate picture.
The method according to claim 2, wherein if the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, compressing the multiple intermediate pictures includes :

Stitching the plurality of intermediate pictures according to a second direction to obtain a stitched picture, the second direction being the column direction of the intermediate pictures;

If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution height of the stitched image is greater than the maximum resolution height of the single-screen physical interface, the Performing pixel compression along the second direction on the spliced picture or at least one intermediate picture, or performing chroma compression on the spliced picture or the at least one intermediate picture.
The method according to any one of claims 1-4, wherein the method further comprises:

Comparing the resolution widths of the multiple screen pictures with the maximum resolution width of the single-screen physical interface, and the resolution heights of the multiple screen pictures with the maximum resolution height of the single-screen physical interface, if the first screen The resolution width of the picture is greater than the maximum resolution width of the single-screen physical interface or the resolution height of the first screen picture is greater than the maximum resolution height of the single-screen physical interface, then the first screen picture is made The width and height conversion of resolution pixels, the multiple screen pictures include the first screen picture.
A multi-screen display method is characterized in that it is applied to an adapter chip, and the method includes:

Segment the received target image to obtain multiple intermediate images;

Comparing the resolutions of the plurality of intermediate pictures with a plurality of target resolutions respectively, the target resolution being the screen resolution of the target screen corresponding to the intermediate pictures;

If the resolution of the intermediate picture is different from the target resolution, the resolution of the intermediate picture is adjusted to obtain multiple screen pictures, and the resolution of the screen picture is the same as the target resolution;

sending the multiple screen pictures to the multiple target screens respectively.
The method according to claim 6, wherein the adjusting the resolution of the intermediate picture comprises:

If the resolution width of the intermediate picture is less than the target resolution width, the resolution width of the intermediate picture is adjusted to the target resolution width;

If the resolution height of the intermediate picture is smaller than the target resolution height, adjusting the resolution height of the intermediate picture to the target resolution height.
The method according to claim 6, further comprising:

If the resolution of the intermediate picture is the same as the target resolution, or before the resolution of the intermediate picture is adjusted, decompression processing and/or aspect ratio recovery processing are performed on the intermediate picture.
A multi-screen display device is characterized in that it is applied to an AP chip, and the device includes:

a processing unit for generating multiple screen pictures;

The processing unit is further configured to adjust the resolution width of the multiple screen pictures to the target resolution width and/or adjust the resolution height of the multiple screen pictures if the first difference is greater than the preset difference. Adjusting to the target resolution height to obtain multiple intermediate pictures, the first difference is the difference between the resolution height or resolution width of any two screen pictures in the multiple screen pictures;

The processing unit is further configured to splice the multiple intermediate pictures to obtain a target picture;

A transceiver unit, configured to input the target picture to the adapter chip through the single-screen physical interface.
The device according to claim 9, wherein the processing unit is further used for:

If the total bandwidth required for pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of a single-screen physical interface, compress the multiple intermediate pictures.
The device according to claim 10, wherein if the total bandwidth required for the pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of the single-screen physical interface, compressing the multiple intermediate pictures, the The above processing unit is specifically used for:

Stitching the plurality of intermediate pictures according to a first direction to obtain a stitched picture, the first direction being the row direction of the intermediate pictures;

If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution width of the stitched image is greater than the maximum resolution width of the single-screen physical interface, the Performing pixel compression along the first direction on the spliced picture or at least one intermediate picture, or performing chroma compression on the spliced picture or the at least one intermediate picture.
The device according to claim 10, wherein if the total bandwidth required for the pixel transmission of the multiple intermediate pictures is greater than the maximum output bandwidth of the single-screen physical interface, compressing the multiple intermediate pictures, the The above processing unit is specifically used for:

Stitching the plurality of intermediate pictures according to a second direction to obtain a stitched picture, the second direction being the column direction of the intermediate pictures;

If the resolution × frame rate of the stitched image is greater than the maximum output bandwidth of the single-screen physical interface, and/or the resolution height of the stitched image is greater than the maximum resolution height of the single-screen physical interface, the Performing pixel compression along the second direction on the spliced picture or at least one intermediate picture, or performing chroma compression on the spliced picture or the at least one intermediate picture.
The device according to any one of claims 9-12, wherein the processing unit is further configured to:

Comparing the resolution widths of the multiple screen pictures with the maximum resolution width of the single-screen physical interface, and the resolution heights of the multiple screen pictures with the maximum resolution height of the single-screen physical interface, if the first screen The resolution width of the picture is greater than the maximum resolution width of the single-screen physical interface or the resolution height of the first screen picture is greater than the maximum resolution height of the single-screen physical interface, then the first screen picture is made The width and height conversion of resolution pixels, the multiple screen pictures include the first screen picture.
A multi-screen display device is characterized in that it is applied to an adapter chip, and the device includes:

A processing unit, configured to segment the received target picture to obtain multiple intermediate pictures;

The processing unit is further configured to compare the resolutions of the plurality of intermediate pictures with target resolutions respectively, and the target resolution is the screen resolution of the target screen corresponding to the intermediate pictures;

The processing unit is further configured to adjust the resolution of the intermediate picture to obtain multiple screen pictures if the resolution of the intermediate picture is different from the target resolution, and the resolution of the screen picture is the same as the target resolution. same resolution;

A transceiver unit, configured to respectively send the multiple screen pictures to the multiple target screens.
The device according to claim 14, wherein, in terms of adjusting the resolution of the intermediate picture, the processing unit is specifically configured to:

If the resolution width of the intermediate picture is smaller than the target resolution width, adjusting the resolution width of the intermediate picture to the target resolution width;

If the resolution height of the intermediate picture is smaller than the target resolution height, adjusting the resolution height of the intermediate picture to the target resolution height.
The device according to claim 14, wherein the processing unit is further used for:

If the resolution of the intermediate picture is the same as the target resolution, or before the resolution of the intermediate picture is adjusted, decompression processing and/or aspect ratio recovery processing are performed on the intermediate picture.
A chip, characterized in that the chip includes a processor, a memory, a communication interface, and one or more programs, the one or more programs are stored in the memory and configured by the processor Execution, the program includes instructions for executing the steps in the method according to any one of claims 1-5 or the steps in the method according to any one of claims 6-8.
A chip module, characterized in that it includes a transceiver component and a chip, the chip includes a processor, a memory, and a computer program or instruction stored on the memory, and the processor executes the computer program or instruction to realize Instructions for steps in the method of any one of claims 1-5 or instructions for steps in the method of any one of claims 6-8.
An electronic device, characterized in that the electronic device comprises the chip as claimed in claim 17 or the chip module as claimed in claim 18.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the method according to any one of claims 1-5 A step of a method or a step of a method as claimed in any one of claims 6-8.