CN117116230A - Multi-screen refreshing system, method and storage medium - Google Patents
Multi-screen refreshing system, method and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
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Abstract
The application provides a multi-screen refreshing system, a multi-screen refreshing method and a storage medium; the multi-screen refreshing system comprises N display screen refreshing links; each display screen refreshing link at least comprises an image drawing module, an image synthesizing module and a display screen module; the image drawing module is used for drawing preset image data and sending the preset image data to the image synthesis module; the image synthesis module is used for responding to the image refreshing signal, carrying out image synthesis processing on the preset image data so as to obtain image display data, and transmitting the image display data to the display screen module for display. The application realizes that different display screen modules can perform image rendering at the optimal refresh rate, ensures the fluency of each display screen module, improves the user experience and reduces the power consumption.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a multi-screen refreshing system, a multi-screen refreshing method, and a storage medium.
Background
Under the trend of continuous popularization of new energy automobiles, the cabin is more and more intelligentized and entertained, and the number of screens in the cabin is also more and more. Besides instrument screen and central control screen, the cabin also has large screens such as ceiling screen and rear row screen.
Different screens may have different resolutions and refresh rates, with the exception of the meter screen, which is the entertainment screen and is responsible for rendering by the central control terminal. The central control end is generally an Android system, and the surface eFlinger is used for screen rendering. However, the native surfeflinger adopts serial rendering for multiple screens, and in the case of multiple screens, the refresh efficiency is low, which may cause obvious problems such as catton and the like.
The rendering mechanism of the Android native is based on the refresh rate of the main screen, and refreshing is executed according to the refresh rate of the main screen when other auxiliary screens are refreshed; thus, the problem of inconsistent refresh rates exists, and the situation that screens with different refresh rates are blocked and have higher power consumption can occur.
Disclosure of Invention
The application aims to solve the technical problems and provides a multi-screen refreshing system, a multi-screen refreshing method and a storage medium, wherein the multi-screen refreshing system, the multi-screen refreshing method and the storage medium can be used for rendering different display screens by using optimal refreshing rates.
Specifically, the application provides a multi-screen refreshing system which is characterized by at least comprising N display screen refreshing links, wherein N is more than or equal to 2.
Each display screen refreshing link at least comprises an image drawing module, an image synthesizing module and a display screen module.
The image drawing module is used for drawing preset image data and sending the preset image data to the image synthesis module.
The image synthesis module is used for responding to the image refreshing signal, carrying out image synthesis processing on the preset image data so as to obtain image display data, and transmitting the image display data to the display screen module for display.
The multi-screen refreshing system is characterized in that an image drawing module and an image synthesizing module are arranged on each display screen refreshing link, so that different display screen modules can perform image rendering at the optimal refreshing rate, the smoothness of each display screen module is ensured, the user experience is improved, and the power consumption is reduced.
The image drawing module includes a first image drawing unit and a second image drawing unit.
The first image drawing unit is configured to send an image drawing signal to the second drawing unit.
The second image drawing unit is used for responding to the image drawing signal, drawing preset image data and sending the preset image data to the image synthesis module.
The module responsible for signal input and the module responsible for image drawing are separated, so that the module responsible for image drawing can be prevented from being blocked when complex drawing tasks are processed, the smoothness and responsiveness of display of the display screen module are further ensured, and the user experience is improved.
The display screen refreshing link also comprises a display screen driving module and an image transmission module.
The display screen driving module is used for transmitting preset image signals sent by the display screen module to the image transmission module and transmitting image display data to the display screen module.
The image transmission module is used for converting the preset image signal into an image refreshing signal, transmitting the image refreshing signal to the image synthesis module, and transmitting image display data from the image synthesis module to the display screen driving module.
The preset image signal is a pulse signal, and the image refreshing signal is a VSYNC signal; the pulse signal sent by the display screen module is converted into a VSYNC signal and transmitted to the upper layer, so that the display refreshing time can be accurately controlled, and the accurate transmission of data and the normal operation of the display screen module are ensured.
The image display data are transmitted to the display screen module through the image transmission module and the display screen driving module in sequence, so that the image display efficiency is improved, and the response speed and the stability of the system are improved.
The display screen refresh link also includes an application module.
The application program module operates on the display screen module, and the first image drawing unit and the second image drawing unit are both arranged on the application program module.
The first image drawing unit and the second image drawing unit are actually two internal threads in the application program module, and the first image drawing unit and the second image drawing unit are matched with each other, so that the smoothness and the responsiveness of the interface of the display screen module can be improved, further, the flexible interaction effect of the display screen module is realized, and the system performance and the user experience are prompted.
The first image drawing unit, the second image drawing unit and the image synthesis module in each display screen refreshing link are sequentially connected and connected with the same image transmission module, the other end of the image transmission module is connected with a display screen driving module, and the other end of the display screen driving module is connected with the display screen module in each display screen refreshing link.
Through the connection mode, the whole display screen refreshing link realizes complete image processing and transmission flow from an application program to a final display area, and under the action and cooperation of each module, the accuracy, fluency and quality of image drawing are ensured, and the visual effect of a user is provided.
The display screen refreshing links are arranged, so that simultaneous refreshing and display of a plurality of display screens can be realized, multi-channel signal transmission is supported, multi-screen refreshing can be met, and more flexible display capability is provided.
Based on the same conception, the application also provides a multi-screen refreshing method which is applied to the multi-screen refreshing system, and the method comprises the following steps:
s10: the image drawing module draws preset image data and sends the preset image data to the image synthesis module.
S20: and the image synthesis module responds to the image refreshing signal, performs image synthesis processing on the preset image data to obtain image display data, and transmits the image display data to the display screen module for display.
The multi-screen refreshing method realizes that different display screen modules can perform image rendering at the optimal refreshing rate, ensures the fluency of each display screen module, improves the user experience and reduces the power consumption.
The step S10 includes:
the first image drawing unit sends an image drawing signal to the second drawing unit.
The second image drawing unit draws preset image data in response to the image drawing signal, and sends the preset image data to the image synthesizing module.
And through task division cooperation and grading processing, the image drawing efficiency and quality are improved.
Before executing the step S20, the method includes:
the display screen driving module transmits the preset image signals sent by the display screen module to the image transmission module.
And a display screen driving module is adopted to transmit preset image signals, so that a data transmission interface is unified.
The image transmission module converts the preset image signal into an image refreshing signal and transmits the image refreshing signal to the image synthesis module.
The preset image signal is a pulse signal, and the image refreshing signal is a VSYNC signal; the pulse signal is converted into the VSYNC signal, so that synchronization of an image and a display screen module can be ensured, image quality is improved, rendering delay is avoided, and smoothness of image display is ensured.
In step S20, the image display data is sequentially transmitted to the display screen module through the image transmission module and the display screen driving module.
The image transmission method can further improve the image display efficiency.
The present application also provides a storage medium, which is one of computer-readable storage media, the computer-readable storage media storing computer instructions for causing a computer to execute the multi-screen refresh method.
Compared with the prior art, the application has the beneficial effects that:
according to the application, the image drawing module and the image synthesizing module are arranged on each display screen refreshing link, so that different display screen modules can perform image rendering at the optimal refreshing rate, the smoothness of each display screen module is ensured, the user experience is improved, and the power consumption is reduced. The method solves the technical problems that the refreshing efficiency of other auxiliary screens is low, the display screen is blocked and the power consumption is high due to the fact that the primary rendering mechanism is mainly based on the refreshing rate of the main screen.
Drawings
FIG. 1 is a block diagram of a multi-screen refresh system according to the present application.
FIG. 2 is a flow chart of a method applied to the multi-screen refresh system described in FIG. 1.
Detailed Description
The application provides a multi-screen refreshing system, a multi-screen refreshing method and a storage medium, which are used for solving the technical problems of low refreshing efficiency of other auxiliary screens, stuck display screen and high power consumption caused by a primary rendering mechanism taking the refreshing rate of a main screen as the main one in the prior art.
The application relates to a multi-screen refreshing system, a multi-screen refreshing method and a storage medium, which are described in further detail below with reference to the specific embodiments and the accompanying drawings.
Embodiment one:
referring to FIG. 1, the present application provides a multi-screen refreshing system, which is characterized by at least including N display screen refreshing links, wherein N is greater than or equal to 2.
The user needs to modify the original rendering mechanism firstly to achieve the effect of multi-screen refreshing, and the method comprises the following steps:
the surfeflinger (i.e., the image composition module described below) is changed to multiple processes such that each process correspondingly refreshes a display screen.
HardwareComposer HAL (i.e., the image transmission module described below) is changed to a single-process multi-instance, such that each instance corresponds to a display screen, resulting in a corresponding VSYNC signal.
And modifying the Render Thread (i.e., the second rendering unit described below) to Render the image rendering data submitted by the APP to the surface eflinger of the corresponding display screen.
Each display screen refreshing link at least comprises an image drawing module, an image synthesizing module and a display screen module.
The image drawing module is used for drawing preset image data and sending the preset image data to the image synthesis module.
The image synthesis module is used for responding to the image refreshing signal, carrying out image synthesis processing on the preset image data so as to obtain image display data, and transmitting the image display data to the display screen module for display.
The image drawing module includes a first image drawing unit and a second image drawing unit.
In this embodiment, the first image drawing unit corresponds to UI Thread, and the second image drawing unit corresponds to Render Thread.
The display screen refreshing link also comprises an application program module; the application program module operates on the display screen module, and the first image drawing unit and the second image drawing unit are both arranged on the application program module.
It should be noted that, the UI Thread and the Render Thread belong to threads in the application program module (i.e. APP), and the UI Thread and the Render Thread cooperate with each other to draw a UI element view of the APP, and transmit the UI element view to the SurfaceFlinger.
The first image drawing unit is configured to send an image drawing signal to the second drawing unit.
The first image rendering unit (i.e., UI Thread) is a user interface Thread that submits a corresponding rendering command (image rendering signal) to the second rendering unit (i.e., render Thread) when the UI Thread updates the associated UI element view.
The second image drawing unit is used for responding to the image drawing signal, drawing preset image data and sending the preset image data to the image synthesis module.
When the second drawing unit receives the drawing command, drawing a UI element view (preset image data) required by the corresponding APP, and transmitting the drawn UI element view to the SurfaceFlinger.
The display screen refreshing link also comprises a display screen driving module and an image transmission module.
The display screen driving module is equivalent to DisplayDriver, and the image transmission module is equivalent to HardwareComposer HAL.
The DisplayDriver belongs to a display driver and can provide functions of transmission, display setting, display mode management, parameter calibration, fault diagnosis, energy saving management and the like; in this embodiment, the main function of DisplayDriver is transmission.
HardwareComposer HAL is a hardware synthesizer that provides a unified interface between an application and a display screen.
The display screen driving module is used for transmitting preset image signals sent by the display screen module to the image transmission module and transmitting image display data to the display screen module.
The DisplayDriver receives the pulse signal (i.e. the preset image signal) sent by the display screen module, transmits the pulse signal to the image transmission module, and is responsible for transmitting the data of the upper layer (i.e. the image display data) to the display screen module.
The image transmission module is used for converting the preset image signal into an image refreshing signal, transmitting the image refreshing signal to the image synthesis module, and transmitting image display data from the image synthesis module to the display screen driving module.
The preset image signal belongs to a pulse signal, and in HardwareComposer HAL, the pulse signal transmitted from the DisplayDriver is received and converted into a VSYNC signal (i.e., the image refresh signal) to be transmitted to an upper layer (image composition module).
And responding to the VSYNC signal by the SurfaceFinger (namely the image synthesis module), carrying out synthesis processing on the UI element view to obtain a UI display view for displaying on a display screen module, and transmitting the UI display view to the display screen module for displaying.
The first image drawing unit, the second image drawing unit and the image synthesis module in each display screen refreshing link are sequentially connected and connected with the same image transmission module, the other end of the image transmission module is connected with a display screen driving module, and the other end of the display screen driving module is connected with the display screen module in each display screen refreshing link.
The first image drawing unit and the second image drawing unit inside each APP are sequentially connected and then connected to corresponding image synthesis modules, each image synthesis module is connected to the same image transmission module, the image transmission module is connected to a unified interface, namely the display screen driving module, and then the display screen driving module is connected to the display screen module corresponding to each APP respectively.
For example, the current multi-screen refreshing system has 3 display screen refreshing links, and the refreshing rate of the display screen module on each link is respectively 90fps, 60fps and 120fps; the multi-screen refreshing system can realize that each display screen module refreshes images at the optimal refreshing rate, and ensure the smoothness of image display of each display screen module.
Embodiment two:
referring to fig. 2, the present application further provides a multi-screen refreshing method, which is applied to the multi-screen refreshing system, and the method includes:
s10: the image drawing module draws preset image data and sends the preset image data to the image synthesis module.
S20: and the image synthesis module responds to the image refreshing signal, performs image synthesis processing on the preset image data to obtain image display data, and transmits the image display data to the display screen module for display.
The step S10 includes:
the first image drawing unit sends an image drawing signal to the second drawing unit.
In this embodiment, the UI Thread sends a drawing command to the render Thread.
The second image drawing unit draws preset image data in response to the image drawing signal, and sends the preset image data to the image synthesizing module.
And after the rendering command is received by the renderThread, drawing a UI element view required by the corresponding APP, and transmitting the drawn UI element view to the SurfaceFlinger.
Before executing the step S20, the method includes:
the display screen driving module transmits the preset image signals sent by the display screen module to the image transmission module.
The DisplayDriver receives the pulse signal sent by the display screen module and sends the pulse signal to HardwareComposer HAL.
The image transmission module converts the preset image signal into an image refreshing signal and transmits the image refreshing signal to the image synthesis module.
HardwareComposer HAL converts the pulse signal to a VSYNC signal and passes it to SurfaceFlinger.
And after the SurfaceFlinger receives the VSYNC signal, synthesizing the UI element view to obtain a UI display view for displaying on a display screen module.
In step S20, the image display data is sequentially transmitted to the display screen module through the image transmission module and the display screen driving module.
The UI display view is sequentially transmitted to the display screen module through HardwareComposer HAL and DisplayDriver to be displayed.
Embodiment III:
the present application also provides a storage medium, which is one of computer-readable storage media, the computer-readable storage media storing computer instructions for causing a computer to execute the multi-screen refresh method.
In summary, the present application provides a multi-screen refreshing system, a multi-screen refreshing method and a storage medium; the multi-screen refreshing system comprises N display screen refreshing links; each display screen refreshing link at least comprises an image drawing module, an image synthesizing module and a display screen module; the image drawing module is used for drawing preset image data and sending the preset image data to the image synthesis module; the image synthesis module is used for responding to the image refreshing signal, carrying out image synthesis processing on the preset image data so as to obtain image display data, and transmitting the image display data to the display screen module for display. The application realizes that different display screen modules can perform image rendering at the optimal refresh rate, ensures the fluency of each display screen module, improves the user experience and reduces the power consumption.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above illustrative embodiments are merely exemplary and are not intended to limit the scope of the present application thereto. Various changes and modifications may be made therein by one of ordinary skill in the art without departing from the scope and spirit of the application. All such changes and modifications are intended to be included within the scope of the present application as set forth in the appended claims.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, e.g., the division of the elements is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple elements or components may be combined or integrated into another device, or some features may be omitted or not performed.
Various component embodiments of the application may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some of the modules according to embodiments of the present application may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present application can also be implemented as an apparatus program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present application may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the application has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.
Claims (10)
1. A multi-screen refreshing system is characterized by at least comprising N display screen refreshing links, wherein N is more than or equal to 2;
each display screen refreshing link at least comprises an image drawing module, an image synthesizing module and a display screen module;
the image drawing module is used for drawing preset image data and sending the preset image data to the image synthesis module;
the image synthesis module is used for responding to the image refreshing signal, carrying out image synthesis processing on the preset image data so as to obtain image display data, and transmitting the image display data to the display screen module for display.
2. The multi-screen refresh system of claim 1, wherein the image rendering module comprises a first image rendering unit and a second image rendering unit;
the first image drawing unit is used for sending an image drawing signal to the second drawing unit;
the second image drawing unit is used for responding to the image drawing signal, drawing preset image data and sending the preset image data to the image synthesis module.
3. The multi-screen refresh system of claim 2, wherein the display screen refresh link further comprises a display screen drive module and an image transmission module;
the display screen driving module is used for transmitting preset image signals sent by the display screen module to the image transmission module and transmitting image display data to the display screen module;
the image transmission module is used for converting the preset image signal into an image refreshing signal, transmitting the image refreshing signal to the image synthesis module, and transmitting image display data from the image synthesis module to the display screen driving module.
4. A multi-screen refresh system as defined in claim 3, wherein the display screen refresh link further comprises an application module;
the application program module operates on the display screen module, and the first image drawing unit and the second image drawing unit are both arranged on the application program module.
5. The multi-screen refreshing system according to claim 4, wherein the first image drawing unit, the second image drawing unit and the image synthesizing module in each display screen refreshing link are sequentially connected and connected to the same image transmission module, the other end of the image transmission module is connected to a display screen driving module, and the other end of the display screen driving module is connected to the display screen module in each display screen refreshing link.
6. A multi-screen refresh method as defined in any one of claims 1-5, applied to a multi-screen refresh system, said method comprising:
s10: the image drawing module draws preset image data and sends the preset image data to the image synthesis module;
s20: and the image synthesis module responds to the image refreshing signal, performs image synthesis processing on the preset image data to obtain image display data, and transmits the image display data to the display screen module for display.
7. The multi-screen refresh method of claim 6, wherein the step S10 includes:
the first image drawing unit sends an image drawing signal to the second drawing unit;
the second image drawing unit draws preset image data in response to the image drawing signal, and sends the preset image data to the image synthesizing module.
8. The multi-screen refresh method of claim 7, comprising, prior to performing said step S20:
the display screen driving module transmits the preset image signals sent by the display screen module to the image transmission module;
the image transmission module converts the preset image signal into an image refreshing signal and transmits the image refreshing signal to the image synthesis module.
9. The multi-screen refreshing method according to claim 8, wherein in step S20, the image display data is sequentially transmitted to the display screen module through the image transmission module and the display screen driving module.
10. A storage medium, one of the computer-readable storage media, wherein the computer-readable storage medium stores computer instructions for causing a computer to perform the multi-screen refresh method of any one of claims 7-9.
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| CN202310964067.6A CN117116230A (en) | 2023-08-02 | 2023-08-02 | Multi-screen refreshing system, method and storage medium |
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