CN115167929A - Method, device, equipment and storage medium for fast reversing display - Google Patents

Method, device, equipment and storage medium for fast reversing display Download PDF

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Publication number
CN115167929A
CN115167929A CN202210772919.7A CN202210772919A CN115167929A CN 115167929 A CN115167929 A CN 115167929A CN 202210772919 A CN202210772919 A CN 202210772919A CN 115167929 A CN115167929 A CN 115167929A
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Prior art keywords
program
reversing
reverse
guiding
video
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Inventor
贾伟清
谢修森
边少君
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South Sagittarius Integration Co Ltd
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South Sagittarius Integration Co Ltd
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Priority to CN202210772919.7A priority Critical patent/CN115167929A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/4401—Bootstrapping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
    • B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
    • B60R1/26—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view to the rear of the vehicle
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/806—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for aiding parking

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Computer Security & Cryptography (AREA)
  • Stored Programmes (AREA)

Abstract

The invention discloses a method, a device, equipment and a storage medium for displaying fast backing, wherein the method comprises the following steps: guiding a first reversing program before guiding a Linux Kernel system to start based on a BootLoader, and displaying a reversing video picture through the first reversing program; and after the Linux Kernel system is started, guiding a second reversing program, and controlling the reversing video display picture of the first reversing program by the second reversing program. The method and the device can effectively shorten the time delay of the backing display, reduce the waiting time of the user for processing the demand, greatly enhance the timeliness of the rapid backing and respond to the client request in real time.

Description

Method, device, equipment and storage medium for fast reversing display
Technical Field
The invention relates to the technical field of vehicle-mounted intelligent cabins, in particular to a method, a device, equipment and a storage medium for displaying fast backing,
background
In the field of existing vehicle-mounted intelligent cabins, due to the characteristics of ecological perfection, rich interfaces, convenience for expansion and the like of an Android system, the Android system gradually becomes a mainstream central control system platform. With the development of intelligent cockpit towards intellectualization and networking, the backing function has been more and more directly integrated on the central control display screen.
At present, before the Android system is started, the Linux system completes corresponding initialization of backing and displays a backing video picture to a user in a covering mode, the user is guided by a BootLoader, and then the Linux system completes starting and loads the backing video for display, so that a long time exists in the middle of the process, and user experience is greatly influenced.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for displaying the fast backing, which can effectively shorten the time delay of the backing display, reduce the waiting time of the demand processing of a user, greatly enhance the timeliness of the fast backing and respond to the request of the user in real time.
In a first aspect, the present application provides a method for displaying a fast reverse drive, which includes the steps of:
guiding a first reversing program before guiding a Linux Kernel system to start based on a BootLoader, and displaying a reversing video picture through the first reversing program;
and after the Linux Kernel system is started, guiding a second reversing program, and controlling the reversing video display picture of the first reversing program by the second reversing program.
In one possible embodiment, the reverse image display is immediately displayed when a reverse signal is detected.
In a possible implementation manner, after the Linux Kernel system is completely started, the second reverse program is guided to start a take-over service, the right of a display picture of a rear view camera is controlled from the first reverse program, and when take-over is completed, the first reverse program is guided to be ended.
In one possible embodiment, the first reverse guidance program runs on a Main System and the second reverse guidance program runs on a Sub System.
In one possible implementation mode, when the Main-System accesses the reversing video resource, a message is sent through the MailBox, so that the Sub-System does not allow the access to the reversing video resource; and after the Main-System finishes accessing the reversing video resource, sending a message through the MailBox so that the Sub-System accesses the reversing video resource.
In one possible embodiment, when the first reverse program is guided to run, the current address counter of the WDMA is monitored, and whether the VIOC path is working normally is checked;
and if the VIOC path does not work normally, the first reversing program is guided to reset the VIOC path.
In a second aspect, the present application provides a device for displaying fast backing up, including:
the display module is used for guiding a first reversing program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and displaying a reversing video picture through the first reversing program;
and the processing module is used for guiding a second reversing program after the Linux Kernel system is started, and controlling the reversing video display picture of the first reversing program by the second reversing program.
In a possible implementation manner, after the Linux Kernel system is completely started, the second car backing program is guided to start a takeover service, the right of a display picture of a rear view camera screen is controlled from the first car backing program, and when the takeover is completed, the first car backing program is guided to be ended.
In a third aspect, the present application further provides an electronic device, including: a processor; a memory having computer readable instructions stored thereon which, when executed by the processor, implement the method of any of the first aspects.
In a fourth aspect, the present application also provides a computer readable storage medium storing computer program instructions which, when executed by a computer, cause the computer to perform the method of any one of the first aspect.
According to the method, the device, the equipment and the storage medium for displaying the fast reverse, a first reverse program is guided before a Linux Kernel system is guided to start based on a vehicle BootLoader, and a reverse video picture is displayed through the first reverse program; after the Linux Kernel system is started, a second backing program is guided, and a backing video display picture of the first backing program is controlled by the second backing program, so that the time delay of backing display can be effectively shortened, the waiting time of user demand processing is reduced, the timeliness of rapid backing is greatly enhanced, and a client request is responded in real time.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart of a method for displaying a fast reverse in an embodiment of the present application;
FIG. 2 is a schematic view of a fast reverse display apparatus provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of an electronic device provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a computer-readable program medium provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Referring to fig. 1, fig. 1 is a flowchart of a method for displaying fast reverse, according to the present invention, and as shown in fig. 1, the flowchart of a fast reverse display includes:
step S101: the method comprises the steps of guiding a first reversing program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and displaying a reversing video picture through the first reversing program.
Specifically, in a boot stage in the Main-System starting process, a first reverse program is booted, when a reverse signal is detected, a reverse video picture is immediately displayed, and it can be understood that the Main System is the Main System.
Optionally, when no reverse signal is detected, the reverse picture is not displayed, and the Linux Kernel system is continuously started.
In one embodiment, in a boot loader boot stage in a Main-System boot process, initialization of driving of an LCD display screen and a camera peripheral is started, a VOIC video frame is initialized after the initialization of the driving of the LCD display screen and the camera peripheral is completed, and a first backing program is booted in the Main-System after the initialization of the VOIC video frame is completed. And starting the Sub-System kernel, wherein the Sub-System is a subsystem, and when the Sub-System kernel is started, the second reversing program is started to be guided, and the video picture is displayed by the second program.
The VOIC video framework initialization comprises the following steps: starting SCALER driving; setting a SCALER _ TYPE structural body; configuring VIOC output display related settings; carrying out copy preparation work of SCALER _ VIOC data; preparing a related calling interface of an upper application program; if the application layer configuration is completed, the initialization of the reversing video flow can be performed.
Optionally, after the initialization of the reversing video process, the step of opening the reversing video specifically includes: initializing a video source; applying for a video display space; switching a video input channel; switching a video output channel; and switching the video display level. The video closing step specifically comprises the following steps: recovering the video display space applied before; switching video display levels; the output of the video source is stopped.
It should be noted that the VIOC video component is used in a race situation. When the first backing program is started, in order to not influence the normal system starting time, the VIOC resource is only used for quick backing, and once the resource is released, the VIOC resource is not applied again. However, the second reverse program is started after the linux system is started, more complex logic processing can be performed at this time, and the first reverse program can transfer corresponding resources to the second reverse program.
The VIOC component is used for format processing of the reverse video and final display of video data, and can realize functions such as image scaling format conversion, video channel switching, image video superposition, layer switching and the like.
Optionally, the VIOC assembly includes: VIN, deinterlacer, scaler, WMIXer, WDMA, RDMA, DISP, wherein VIN is used for input video data from the video source module and the frame format may be interlaced or progressive. The color format is YUV, and the VIN may convert the YUV format data into RGB format data. Deinterlacer is used to deinterlace interlaced input sources. Scaler is used to enlarge its size to fit the size of the display device after the de-interlacing procedure. WMIXer is used to mix PGL (reverse trace) using RDMA 16. WDMA is used to store video data from WMIXer into allocated memory. RDMA is used to read video data from allocated memory and pass them to WMIXer for display. DISP is used to display (mix) video data.
Optionally, in order to quickly display a reversing picture in a short time, the preview of the vehicle rearview camera needs to be guided and completed by the first reversing program, if a reversing signal is detected, the reversing picture is immediately displayed, it needs to be said that the first reversing program is guided in the BootLoader stage, the function is single, the reversing picture is only displayed, the Linux Kernel system is started, the second reversing program is guided, wherein the second reversing program can not only display the picture, but also execute other functions.
Optionally, the guidance difference between the second reverse program and the first reverse program is that the first reverse program starts to be started after the vehicle is powered on, and only the second reverse program starts to be started after the Kernel boosting is completed. The first backing program specifically refers to a backing program which starts to run at the bootloader stage;
and the second vehicle backing program refers to a vehicle backing program which is carried out after the bootloader guides the linux kernel and before the Android system is completely started.
Therefore, it can be understood that the reverse screen can be displayed quickly by the BootLoader phase guiding the first reverse program.
In one embodiment, the host System and the subsystem can access the reverse video resource, wherein if the Main-System has to access the resource, a message is sent through the MailBox so that the Sub-System does not access the resource; after the Main-System finishes accessing the resources, a message is sent through the MailBox, and then the Sub-System is allowed to access the reverse video resources, wherein the controller is responsible for configuring the video source module into a specific mode, wherein it can be understood that the specific mode refers to a working mode for initializing the video source module and configuring the video source module into a format which can be recognized by the CPU for video output. Wherein the Main-System is a Main System, and the Sub-System is a subsystem.
Optionally, if the Sub-System has to access the resource, sending a message through the MailBox so that the Main-System does not access the resource; and after the Sub-System finishes accessing the resources, sending a message through the MailBox, and allowing the Main-System to access the reversing video resources.
Optionally, the first reverse program and the second reverse program are reverse programs implemented for enabling a fast reverse display (2-5 s) before the Android system is started, and the difference is that the first reverse program and the second reverse program are different at a system starting stage and are in a complementary relationship, and in order to make up for the fact that the second reverse program may still be started too slowly. The second reverse procedure is therefore implemented after linux kernel starts rootfs (power up for 2-5 s). And the first reversing program realized in the bootloader stage can naturally present a reversing picture (within 2s after power-on) faster than the second reversing program in the linux kernel stage from the starting time sequence.
Step S102: and after the Linux Kernel system is started, guiding a second reversing program, and controlling the reversing video display picture of the first reversing program by the second reversing program.
Specifically, after the Linux Kernel system is completely started, a second reversing program starts a Handover Service, and the control right of the rearview camera is taken over from the first reversing program. When the process of control right transfer takeover is completed, the first reverse program operation is terminated.
When a vehicle is powered on, a Bootloader is started to be loaded on a main system, a Linux Kernel system is started to be loaded at the same time, a first reversing program is guided before the Linux Kernel system is loaded, namely, the Bootloader is operated, the first reversing program is guided, so that a vehicle rearview camera can quickly display a reversing picture, when the reversing picture is displayed, a second reversing program is guided, a take-over service is started by the second reversing program, and the control right of the rearview camera is taken over from the first reversing program. When the process of the control right transfer takeover is completed, the operation of the first reverse program is terminated. It should be noted that, the second reverse program is booted after the Linux Kernel system is started,
in addition, after the second reverse program is started, the reverse screen displayed by the first reverse program is not used, and it can be understood that the first reverse program is only used for rapidly displaying the reverse screen and does not have a complex function, for example, a track line during reverse, and if a PGL (reverse track line) is loaded before the Sub-System is started, a preview screen by the first reverse program is displayed with a delay (less than or equal to 50 ms). Therefore, the first reverse program should run as soon as possible in the BootLoader, and the BootLoader should notify the first reverse program to read and display the PGL after loading the boot image and the PGL to the corresponding physical memory. The reverse trajectory line in the reverse screen displayed by the first reverse program is fixed (static trajectory line), and the reverse trajectory line in the reverse screen displayed by the second reverse program is changed as the vehicle moves (dynamic trajectory line).
The reversing picture is displayed by guiding the first reversing program, the advantage of preferential guidance of the BootLoader is utilized, the display of the reversing video can be completed before the Linux Kernel guidance of the Sub-System, the faster display of the reversing video is supported, the customer experience and perception are greatly improved, the waiting time in the actual use of a customer is greatly reduced, and after the Linux Kernel System is loaded and completed, the function that the first reversing program cannot be realized can be compensated by guiding the second reversing program on the subsystem, the picture control right of the first reversing program is managed, the advantage complementation is formed, the waiting time is processed by reducing the user's requirement, and the timeliness of rapid reversing is greatly enhanced.
In one embodiment, both the BootLoader running on the Main-System and the Kernel running on the Main-System have a dedicated driver to communicate with the Sub-System, wherein the Message Handler in the Sub-System: the messages received from the Main-System are processed and the life cycle of the first reverse procedure is typically determined by it.
Optionally, the BootLoader bootstrap program loads the binary program file of the Sub-System to the memory RAM and starts to run.
It can be understood that the fast reverse is characterized by short start time (2-5 s) compared with a common reverse program presented by an Android APP program after the Android system is started.
According to the method, the device, the equipment and the storage medium for displaying the fast reverse, a first reverse program is guided before a Linux Kernel system is guided to start based on a vehicle BootLoader, and a reverse video picture is displayed through the first reverse program; after the Linux Kernel system is started, a second backing program is guided, and a backing video display picture of the first backing program is controlled by the second backing program, so that the backing display time delay can be effectively shortened, the waiting time for user demand processing is reduced, the timeliness of rapid backing is greatly enhanced, and a client request is responded in real time.
Referring to fig. 2, fig. 2 is a schematic view of a fast reverse display device provided by the present invention, and as shown in fig. 2, the fast reverse display device includes:
the display module 201 is used for guiding a first reversing program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and displaying a reversing video picture through the first reversing program;
the processing module 202 is configured to guide a second reverse program after the Linux Kernel system is started, and control a reverse video display screen of the first reverse program by the second reverse program.
Further, in an embodiment, the processing module 202 is further configured to, after the Linux Kernel system is completely started, start a takeover service by the guidance second reversing program, control a right of a screen display of the rear view camera from the guidance first reversing program, and end the guidance first reversing program when the takeover is completed.
Further, in an embodiment, the display module 201 is further configured to immediately display a reverse screen when a reverse signal is detected.
Further, in an embodiment, the processing module 202 is further configured to monitor a current address counter of the WDMA and check whether the VIOC path is working normally when the first reverse program is booted; and if the VIOC path does not work normally, the first reversing program is guided to reset the VIOC path.
Further, in an embodiment, the processing module 202 is further configured to send a message through the MailBox when the Main-System accesses the reverse video resource, so that the Sub-System does not allow access to the reverse video resource; and after the Main-System finishes accessing the reversing video resource, sending a message through the MailBox so that the Sub-System accesses the reversing video resource.
An electronic device 300 according to this embodiment of the invention is described below with reference to fig. 3. The electronic device 300 shown in fig. 3 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 3, electronic device 300 is embodied in the form of a general purpose computing device. The components of electronic device 300 may include, but are not limited to: the at least one processing unit 310, the at least one memory unit 320, and a bus 330 that couples various system components including the memory unit 320 and the processing unit 310.
Wherein the storage unit stores program code that can be executed by the processing unit 310, such that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the section "example methods" above in this specification.
The storage unit 320 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM) 321 and/or a cache memory unit 322, and may further include a read only memory unit (ROM) 323.
The storage unit 320 may also include a program/utility 324 having a set (at least one) of program modules 325, such program modules 325 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 330 may be one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 300 may also communicate with one or more external devices 400 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 300, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 300 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 350. Also, the electronic device 300 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 460. As shown, network adapter 360 communicates with the other modules of electronic device 300 via bus 330. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
According to an aspect of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above section "exemplary methods" of the present description, when said program product is run on the terminal device.
Referring to fig. 4, a program product 400 for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
Furthermore, the above-described figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the invention, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
In summary, the method, the device, the equipment and the storage medium for displaying the fast reverse drive provided by the application guide a first reverse drive program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and display a reverse drive video picture through the first reverse drive program; after the Linux Kernel system is started, a second backing program is guided, and a backing video display picture of the first backing program is controlled by the second backing program, so that the time delay of backing display can be effectively shortened, the waiting time of user demand processing is reduced, the timeliness of rapid backing is greatly enhanced, and a client request is responded in real time.
The foregoing are merely exemplary embodiments of the present application and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. A method for displaying a rapid reversing is characterized by comprising the following steps:
guiding a first reversing program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and displaying a reversing video picture through the first reversing program;
and after the Linux Kernel system is started, guiding a second reversing program, and controlling the reversing video display picture of the first reversing program by the second reversing program.
2. The method of claim 1, wherein displaying a reverse video screen via the first reverse program comprises:
when a reverse signal is detected, a reverse image is displayed immediately.
3. The method of claim 1, wherein after the Linux Kernel system is started, the method for guiding a second reverse program and controlling a reverse video display screen of the first reverse program by the second reverse program comprises the following steps:
and after the Linux Kernel system is completely started, the second car backing guiding program starts the takeover service, controls the authority of a display picture of a rearview camera from the first car backing guiding program, and ends the first car backing guiding program when the takeover is finished.
4. The method of claim 1, wherein:
the first reverse guiding program runs on the Main-Sys tem, and the second reverse guiding program runs on the Sub-System.
5. The method of claim 4, wherein:
when the Main-System accesses the reversing video resource, sending a message through the MailBox so that the Sub-System does not allow to access the reversing video resource;
and after the Main-System finishes accessing the reversing video resource, sending a message through the MailBox so that the Sub-System accesses the reversing video resource.
6. The method of claim 1, wherein:
when the first reverse program is guided to run, monitoring a current address counter of the WDMA, and checking whether the VIOC path works normally;
and if the VIOC path does not work normally, the first reversing program is guided to reset the VIOC path.
7. A device for displaying rapid reversing is characterized by comprising:
the display module is used for guiding a first reversing program before guiding a Linux Kernel system to start based on a vehicle BootLoader, and displaying a reversing video picture through the first reversing program;
and the processing module is used for guiding a second reversing program after the Linux Kernel system is started, and controlling the reversing video display picture of the first reversing program by the second reversing program.
8. The apparatus of claim 7, wherein the processing module is further configured to:
and after the Linux Kernel system is completely started, the second car backing guiding program starts the takeover service, controls the authority of a display picture of a rearview camera from the first car backing guiding program, and ends the first car backing guiding program when the takeover is finished.
9. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory having stored thereon computer readable instructions which, when executed by the processor, implement the method of any of claims 1 to 6.
10. A computer-readable storage medium, characterized in that it stores computer program instructions which, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 6.
CN202210772919.7A 2022-06-30 2022-06-30 Method, device, equipment and storage medium for fast reversing display Pending CN115167929A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210772919.7A CN115167929A (en) 2022-06-30 2022-06-30 Method, device, equipment and storage medium for fast reversing display

Publications (1)

Publication Number Publication Date
CN115167929A true CN115167929A (en) 2022-10-11

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Country Status (1)

Country Link
CN (1) CN115167929A (en)

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