CN113703865A - Cabin picture display method, control system, storage medium and control equipment - Google Patents
Cabin picture display method, control system, storage medium and control equipment Download PDFInfo
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Abstract
The invention provides a cockpit picture display method and a control system, comprising the following steps: responding to a system starting instruction, and acquiring video data to be played by a first control device; the first control device sends the video data to be played to a video display device so that the video display device displays the video data to be played on a target interface; the second control device acquires data to be displayed and generates a target picture based on the data to be displayed; sending a display control take-over instruction to the first control device; responding to the display control taking over instruction, and stopping sending the video data to be played by the first control device; and the second control device sends the target picture to the video display device so that the video display device displays the target picture on the target interface. The technical scheme of the invention is used for solving the problem that the screen display content can not be uniformly coordinated when the computer is started in the application of the virtualization management program, and improving the user experience.
Description
Technical Field
The invention relates to the field of intelligent cockpit control, in particular to a cockpit picture display method, a control system, a storage medium and control equipment.
Background
In an in-vehicle system, the implementation of virtualization technology relies on a virtualization Hypervisor (Hypervisor), systems with strict requirements for in-vehicle communication and security usually require a real-time operating system (RTOS), while infotainment applications that are not related to security run on a high-performance system on a chip (SOC). The scheme adopts a structure that a System On Chip (SOC) is combined with a microcontroller unit (MCU): a virtual machine runs on the bottom layer of a System On Chip (SOC), and the upper operating systems are generally a display dashboard system and a central control display system. The multiple screens of the upper operating system are mutually independent, and each screen displays respective starting animation when starting; a real-time operating system (RTOS) of a microcontroller unit (MCU) is typically used to run simple, real-time applications such as communication diagnostics and power management.
In practical application, when the intelligent cockpit area controller system is powered on or awakened, a real-time operating system (RTOS) on a microcontroller unit (MCU) can run quickly, then a System On Chip (SOC) is powered on, a virtualization management program (Hypervisor) is started, and an instrument panel system and a central control display system start running. Due to the difference of the starting time of the instrument panel system and the central control display system, when the upper operating system is started, the time difference exists between the starting display of a human-machine interface (HMI) of the instrument panel system and the starting display of the human-machine interface (HMI) of the central control display system, and the screen display content of the upper operating system when the upper operating system is started cannot be uniformly coordinated, so that the problem of black screen is caused, and the customer experience is poor.
Disclosure of Invention
The invention aims to provide a cockpit picture display method, a control system, a storage medium and a control device, which can overcome the problem that screen display contents cannot be uniformly coordinated when starting up in the related technology to a certain extent.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
in one aspect, the present invention provides a cockpit picture display method applied to a display control system, including: responding to a system starting instruction, and acquiring video data to be played by a first control device; the video data to be played is generated based on prestored video data;
the first control device sends the video data to be played to a video display device so that the video display device displays the video data to be played on a target interface;
the second control device acquires data to be displayed and generates a target picture based on the data to be displayed; sending a display control take-over instruction to the first control device;
responding to the display control taking over instruction, and stopping sending the video data to be played by the first control device;
and the second control device sends the target picture to the video display device so that the video display device displays the target picture on the target interface.
Further, the acquiring, by the first control device, video data to be played includes:
the first control device decodes the pre-stored video data based on a preset frame number to obtain the video data to be played;
the sending, by the first control device, the video data to be played to a video presentation device includes:
and the first control device sends the video data to be played to a video buffer of the video display device.
As an optional implementation manner, after the first control device sends the video data to be played to a video presentation device, the method further includes:
and responding to the buffer idle information fed back by the video display device, and the first control device repeats the step of decoding the pre-stored video data based on the preset frame number.
As an alternative embodiment, the video display device comprises a first display module and a second display module;
the display control takeover instruction comprises a first takeover instruction and a second takeover instruction;
the second control device comprises an instrument control module and a central control module; the instrument control module and the central control module are based on different operating systems;
before the sending of the display control takeover instruction to the first control device, the method further includes:
the second control device generates the first take-over instruction based on the starting completion information of the instrument control module; and the second control device generates the second take-over instruction based on the starting completion information of the instrument control module.
Further, the sending a display control takeover instruction to the first control device includes:
the second control device sends the first take-over instruction to the first control device so that the first display module displays a picture corresponding to the first display module; and the second control device sends the second take-over instruction to the first control device so as to enable the second display module to display the picture corresponding to the second display module.
As an optional implementation manner, the stopping, by the first control device, the sending of the video data to be played in response to the display control takeover instruction includes:
the first control device responds to the first take-over instruction and stops sending the video data to be played to the first display module; and the first control device responds to the second take-over instruction and stops sending the video data to be played to the second display module.
In another aspect, the present invention further provides a screen display control system, including: a first control device and a second control device;
the first control device is used for responding to a system starting instruction to acquire video data to be played; sending the video data to be played to a video display device so that the video display device displays the video data to be played; responding to a display control takeover instruction sent by a second control device, and stopping sending the video data to be played;
the second control device is used for acquiring data to be displayed and generating a target picture based on the data to be displayed; sending a display control take-over instruction to the first control device; and sending the target picture to the video display device so as to enable the video display device to display the target picture.
Further, the second control device 20 is further configured to generate the first take-over instruction based on the start-up completion information of the meter control module; and generating the second takeover instruction based on the starting completion information of the central control module.
In another aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where at least one instruction or at least one program is stored, and the at least one instruction or the at least one program is loaded and executed by a processor to implement any one of the above-mentioned cockpit picture display methods.
In another aspect, the present invention further provides an intelligent cockpit control device comprising a processor and a memory, wherein the device comprises a processor and a memory, and the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement any of the cockpit picture display methods described above.
By adopting the technical scheme, the cockpit picture display method, the control system, the storage medium and the control equipment have the following beneficial effects:
the cockpit picture display method provided by the invention obtains the control right of the human-machine interface (HMI) through the real-time operating system (RTOS) of the microcontroller unit (MCU) when the cockpit is started, and switches the control right of the human-machine interface (HMI) after the upper system of the virtualization management program (Hypervisor) is started, can overcome the problem that the screen display content of the cockpit in the related technology can not be unified and coordinated to a certain extent, can be used for multi-screen linkage display, avoids the occurrence of black screen, and optimizes the display effect.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of an application environment provided by an embodiment of the present application;
fig. 2 is a schematic flowchart of a cockpit picture display method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a method for acquiring video data to be played by a first control device;
FIG. 4 is a system architecture diagram of one application environment shown in FIG. 1;
fig. 5 is a system block diagram of a display control system according to an embodiment of the present application.
In the figure: the display control system comprises a cockpit display device 1, a cockpit display controller 2, a display control system 100, a first control device 10 and a second control device 20.
Detailed Description
In the field of intelligent cockpit controllers, a virtualization Hypervisor (Hypervisor) is an intermediate software layer running between a physical server and an operating system, and allows multiple operating systems and applications to share a set of basic physical hardware, which allocates an appropriate amount of memory, CPU, network, and disk to each virtual machine, and loads the guest operating systems of all the virtual machines.
Before further detailed description of the embodiments of the present application, terms and expressions referred to in the embodiments of the present application will be described, and the terms and expressions referred to in the embodiments of the present application will be used for the following explanation.
Hypervisor: is an intermediate software layer running between the physical server and the operating system that allows multiple operating systems and applications to share a set of underlying physical hardware, also called a Virtual Machine Monitor. Hypervisor is the core of all virtualization technologies.
Hypervisor: virtualization hypervisor
MCU: a Microcontroller Unit;
SoC: system on Chip, System on Chip;
RTOS: real-time operating system, Real-time operating system;
HMI is a Human Machine Interface Human-computer Interface;
LVDS: a Low-Voltage Differential Signaling Low-Voltage Differential signal;
ROM: Read-Only Memory;
eMMC is an Embedded multimedia controller of an Embedded Multi Media Card.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Examples
In order to more clearly describe the steps of the method of the present embodiment, an application environment of the method is first provided as follows.
Referring to fig. 1, fig. 1 is a schematic diagram of an application environment provided in an embodiment of the present application, and as shown in fig. 1, the application environment may at least include a cockpit display 1 for controlling an intelligent cockpit, where a display control system 100 includes a first control device 10 and a second control device 20, and the first control device 10 and the second control device 20 send pre-stored video data or a target picture to the cockpit display device 1 through a video display device to display related image information. Wherein the first control device 10 may be implemented based on the MCU and the second control device 20 may be implemented based on the SOC.
It should be noted that, because the RTOS of the MCU has a fast start speed, and in the application of the intelligent cockpit domain controller, it is mainly used to run simple and real-time application programs such as communication diagnosis and power management. Since the upper operating system on the SOC with higher performance is started earlier, the first control device can be applied to the RTOS of the MCU, and preset animation video data can be sent after the MCU is started to wait for the upper operating system to be started.
A cockpit picture display method of the present application will be described below based on the application system, and is applied to the display control system 100 shown in fig. 1. Fig. 2 is a schematic flow chart of a cockpit picture display method provided in an embodiment of the present application, and the present specification provides the operation steps of the method as in the embodiment or the flowchart, but more or less operation steps may be included based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. In practice, the system or server product may be implemented in a sequential or parallel manner (e.g., parallel processor or multi-threaded environment) according to the embodiments or methods shown in the figures.
As shown in fig. 2, the method may include:
s101, responding to a system starting instruction, and acquiring video data to be played by a first control device; the video data to be played is generated based on pre-stored video data.
It should be noted that the system start command is typically a power-on or wake-up signal sent by the vehicle start time domain controller. The first control device 10 may be disposed in an MCU, and may be implemented, for example, by an RTOS based on the MCU, where the pre-stored video data is a preset media file, and may be animation-type video data.
Specifically, S101 further includes:
s1011, the first control device decodes the pre-stored video data based on the preset frame number to obtain the video data to be played;
and S1012, in response to the buffer idle information fed back by the video display device, the first control device repeats the step of decoding the pre-stored video data based on the preset frame number.
It will be understood by those skilled in the art that different decoding rates are set, and the occupancy rate and response speed requirements for system resources are different, i.e. the requirements for system resources can be simplified by adjusting the decoding speed. In a specific embodiment, a decoding thread may be established to decode the pre-stored video data, for example, a single-frame decoding thread may be set, and the purpose of setting the preset frame number is to reduce the system memory loss, which is subject to meeting the decoding requirement in practical application.
In the embodiment, a single frame decoding is preferably set, which reduces the requirement on hardware resources for system decoding and can reduce the system cost. It should be noted that the decoding rate is not limited to a single frame, and may be set based on actual requirements.
S103, the first control device sends the video data to be played to a video display device, so that the video display device displays the video data to be played on a target interface.
Specifically, taking a typical arrangement of the application environment shown in fig. 1 as an example, the video display device includes a first display module and a second display module, and the cockpit display device 1 includes an instrument display unit and a central control display unit; the first display module is used for controlling the display of the instrument display unit, and the second display module is used for controlling the display of the central control display unit; the target interface is a display interface set by the video display device and respectively arranged on the instrument display unit and the central control display unit.
Referring to fig. 3, in a specific embodiment, S103 further includes:
and S1031, the first control device sends the video data to be played to a video buffer of the video display device.
Taking single-frame decoding as an example, further explaining the decoding and playing of steps S101 and S103, the first control device 10 starts the decoding process, including loading a frame of pre-stored video data from the memory to the buffer according to the single-frame setting, storing the decoded video data to be played in the video buffer after the single-frame decoding is completed, and sending a decoding success message to the video display device.
The video display device starts a video playing process based on the decoding success message. And acquiring video data to be played from the video buffer and playing, marking the video buffer to be idle, and sending the marked buffer idle information to the decoding process so as to enable the decoding process to enter the next decoding step.
In a specific embodiment, a preset frame number is set for decoding, and a video buffer needs to be cleared all the time in the decoding process, so that the decoding thread can be performed circularly. The process may repeat the decoding process steps when the decoding thread detects a cache flag bit by setting a cache idle flag bit.
The decoding step is a loop process, and is repeated until the display takeover control command is not received from the second control device 20. When receiving the display takeover control instruction from the second control device 20, the display takeover control instruction may be specifically set according to different display control systems. Particularly, when the time for completely playing the pre-stored video data once is less than the time for generating the display control takeover instruction, the first control device may be configured to repeat the decoding and playing processes, and perform the cyclic display on the pre-stored video.
S105, the second control device acquires data to be displayed and generates a target picture based on the data to be displayed; and sending a display control take-over instruction to the first control device.
In practical applications, the second control device 20 may be disposed in the SOC, and the Hypervisor is built at the bottom layer of the SOC, that is, a virtual machine is run at the bottom layer of the SOC. A typical setup top operating system includes a display dashboard system and a central control display system, the display dashboard system outputs and displays on a dashboard display unit through a first display module, and the dashboard display unit may correspond to the first display unit shown in fig. 1; the central control display system outputs and displays on the central control display unit through the second module, the central control display unit may correspond to the second display unit shown in fig. 1, and in some cases, the central control display unit may correspond to the second display unit and the third display unit shown in fig. 1, respectively. Correspondingly, the data to be displayed can be related display parameters and media data of a central control display and vehicle-mounted information entertainment related multimedia conference room, a monitoring and commanding center, an environmental control and the like acquired by a superior operating system based on Hypervisor of an intelligent cabin.
S107, responding to the display control taking over instruction, the first control device stops sending the video data to be played.
And S109, the second control device sends the target picture to the video display device so that the video display device displays the target picture on the target interface.
Particularly, the display control takeover instruction is generated by an HMI (human machine interface) start completion signal sent by the first control device after the initialization of the upper operating system of the Hypervisor is completed. It will be understood by those skilled in the art that the target picture is sent to the display unit through the video presentation device after communication to the video presentation device is established through the upper operating system. And after the second control device takes over the data, the data to be displayed are acquired through the upper operating system and are displayed on the corresponding display unit of the cabin display device 1 through the video display device.
In some embodiments, S105 further comprises:
s1051, the second control device generates the first take-over instruction based on the starting completion information of the instrument control module; and the second control device generates the second take-over instruction based on the starting completion information of the instrument control module.
S1052, the second control device sends the first takeover instruction to the first control device, so that the first display module displays a picture corresponding to the first display module; and the second control device sends the second take-over instruction to the first control device so as to enable the second display module to display the picture corresponding to the second display module.
Accordingly, S107 includes:
s1071, the first control device stops sending the video data to be played to the first display module in response to the first takeover instruction; and the first control device responds to the second take-over instruction and stops sending the video data to be played to the second display module.
Specifically, the cockpit display device 1 that can be applied includes a first display unit that functions as an instrument display unit and a second display unit that functions as a center control display unit; the video display device comprises a first display module and a second display module; the second control device comprises an instrument control module and a central control module; the instrument control module and the central control module are based on different operating systems; the operating system may be a virtual operating system set in a Hypervisor upper system, and may include an instrument virtual operating system and a central control virtual operating system. And the instrument virtual operating system and the central control virtual operating system respectively display the target picture on a central control display unit of the instrument display unit through a first display module and a second display module of the video display device.
It should be noted that, in practical applications, the time for the instrument display module to establish the control of the instrument HMI interface is usually earlier than the time for the central control display module to establish the control of the central control HMI interface. And when the instrument display unit is ready, the second control device generates the second take-over instruction based on the starting completion information of the instrument control module so as to acquire the control right of the instrument display unit. And after the central control display unit is prepared, the second control device generates the second take-over instruction based on the starting completion information of the instrument control module so as to obtain the control right of the central control display unit. The device is mainly used for enabling a driver to observe relevant operation parameters through the instrument display unit early in practical application so as to avoid delaying processing of abnormal conditions.
Based on the method, after the second control device 20 obtains the control right of the HMI interface, different display units can be independently controlled, and each screen displays respective startup animation when starting up; when the computer is started, the first control device 10 takes over the startup, and synchronously sends the pre-stored startup animation to different display units, thereby realizing the display effect of startup picture coordination. The problem of the black screen that passenger cabin display device 1 exists when the machine starts is solved.
The present embodiment further provides a specific embodiment of the application environment shown in fig. 1, which can be used to implement the above-mentioned image display method.
Referring to fig. 4, the cockpit display controller 2 adopts a structure in which an SOC and an MCU are combined, and integrates the MCU and the SOC in the prior art. The first control device 10 is provided in the MCU and the second control device 20 is provided in the SOC.
Specifically, the second control device 20 specifically includes running a Hypervisor virtual machine on the bottom layer of the SOC, and the upper operating system includes a first operating system and a second operating system. In this example, the first operating system is used to control dashboard display, and the first operating system is used to control center control display. The display units of the cockpit display 1 are independent of each other, and each display unit displays respective boot animation when being booted.
In particular, the MCU-based RTOS of the first control device 10 is generally used to run simple, real-time applications for vehicle-mounted and diagnostic communications, and is also used to obtain control rights of all screens of the cockpit display 1 from the MCU-based RTOS at system startup, so as to implement cross-screen boot animation display on the MCU RTOS, thereby increasing the linkage experience between screen displays. When the Hypervisor initialization of the second control device 20 is complete and the control system operating on its upper layer is able to establish control over the HMI, the Hypervisor takes over the control rights of all the screens of the cockpit display 1, respectively.
Specifically, the cockpit display controller 2 in the system may be a hardware architecture based on a single processor, and adopts an integrated chip design, a basic hardware architecture of a built-in SOC, a basic hardware architecture of an MCU, and a dedicated video decoding chip.
In order to save cost, a low-cost video decoding chip can be selected and used for processing the video decoding task of a single frame. In addition, in consideration of the independence of the safety management of the external MCU in the prior art, the basic hardware architecture of the MCU in the processor at least includes an independent power supply, a crystal oscillator, a watchdog, Nor Flash, and basic hardware units supporting CAN wakeup and the like.
Different from the hardware architecture of the external MCU and the SOC, in the system architecture, the cockpit display controller 2 is used as a core controller of the system and can be connected with two memory units. One of the memory units is used as a storage unit of the SOC hardware part, and the memory unit may be an eMMC for storing the Hypervisor, the meter virtual operating system and the central control virtual operating system. The other memory is a storage unit of the MCU hardware part, and the storage unit can be a Nor flash and is used for storing the pre-stored video data. As a possible implementation manner of the above-mentioned video display device, the hardware structure of the video display device may include a 3-way LVDS serial chip and an LVDS deserializer chip, which are respectively used for image display of the meter display unit, the central control display unit and the in-vehicle entertainment display unit.
The second control device 20 controls the target screen display of the instrument display unit, the central control display unit and the vehicle-mounted entertainment display unit through the first operating system and the second operating system running on the Hypervisor after the HMI of the second control device is started. Before the HMI of the second control device 20 is started, the first control device 10 provides separate layer display, and displays the pre-stored video data on the startup pictures of the external instrument display unit, the central control display unit, and the vehicle-mounted entertainment display unit.
It will be understood by those skilled in the art that the method, when applied to an intelligent cabin, further comprises at least the following steps: when the system is started, the RTOS based on the MCU is initialized, the self-initialization operation, the initialization of the video decoding chip and the initialization of the video display device are carried out based on the MCU. After the RTOS of the MCU completes self initialization, respectively carrying out initialization operation on a plurality of display units of the vehicle, and when the initialization of each display unit is completed, the MCU acquires the control right of an image buffer area of each display unit; and the MCU controls the video buffer area of each display unit to realize the cooperative display of each display unit.
A display control system 100 further provided on the basis of the screen display method of the present embodiment will be described with reference to fig. 4.
The display control system 100 includes a first control device 10 and a second control device 20.
The first control device 10 is used for responding to a system starting instruction to acquire video data to be played; sending the video data to be played to a video display device so that the video display device displays the video data to be played; in response to a display control takeover instruction sent by the second control device 20, stopping sending the video data to be played;
the second control device 20 is used for acquiring data to be displayed and generating a target picture based on the data to be displayed; and sends a display control take-over command to the first control device 10; and sending the target picture to a video display device so that the video display device displays the target picture.
In some embodiments, the second control device 20 is further configured to generate the first take-over instruction based on the start-up completion information of the meter control module; and generating the second takeover instruction based on the starting completion information of the central control module.
As a specific embodiment, the second control device 20 may be further configured to generate the first take-over instruction based on the start-up completion information of the meter control module; generating the second take-over instruction based on the starting completion information of the instrument control module;
the second control device 20 sends the first takeover instruction to the first display module, so that the first display module displays a picture corresponding to the first display module; and sending the second takeover instruction to the second display module so that the second display module displays the picture corresponding to the second display module.
The first control device 10 may be further configured to, in response to the first takeover instruction, stop sending the video data to be played to the first display module; and the first control device 10 stops sending the video data to be played to the second display module in response to the second take-over instruction.
In a specific embodiment, the first control device 10 is further configured to decode the pre-stored video data based on a preset number of frames to obtain the video data to be played; responding to the buffer idle information fed back by the video display device, and repeating the step of decoding the pre-stored video data based on the preset frame number; and sending the video data to be played to a video buffer of the video display device.
The following describes a computer-readable storage medium provided by the present embodiment, in which at least one instruction or at least one program is stored, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the above-mentioned cockpit picture display method.
The storage medium may be an internal storage unit of the MCU, or an external storage chip of the MCU, for example, an external ROM.
The following describes an intelligent cockpit control device provided in this embodiment, which includes a processor and a memory, where the device includes the processor and the memory, and the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement the cockpit picture display method.
The processor comprises a built-in basic hardware architecture of SOC, a basic hardware architecture of MCU and a special video decoding chip, which can be the cockpit display controller 2; the memory may include a ROM or an eMMC.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A cockpit picture display method is applied to a display control system and comprises the following steps:
responding to a system starting instruction, and acquiring video data to be played by a first control device; the video data to be played is generated based on prestored video data;
the first control device sends the video data to be played to a video display device so that the video display device displays the video data to be played on a target interface;
the second control device acquires data to be displayed and generates a target picture based on the data to be displayed; sending a display control take-over instruction to the first control device;
responding to the display control taking over instruction, and stopping sending the video data to be played by the first control device;
and the second control device sends the target picture to the video display device so that the video display device displays the target picture on the target interface.
2. The cockpit picture display method of claim 1 wherein said first control means obtaining video data to be played comprises:
the first control device decodes the pre-stored video data based on a preset frame number to obtain the video data to be played;
and responding to the buffer idle information fed back by the video display device, and the first control device repeats the step of decoding the pre-stored video data based on the preset frame number.
3. The cockpit picture display method of claim 1 wherein said first control means sending said video data to be played to a video presentation device comprises:
and the first control device sends the video data to be played to a video buffer of the video display device.
4. The cockpit picture display method of claim 1 wherein said video display means comprises a first display module and a second display module;
the display control takeover instruction comprises a first takeover instruction and a second takeover instruction;
the second control device comprises an instrument control module and a central control module; the instrument control module and the central control module are based on different operating systems;
before the sending of the display control takeover instruction to the first control device, the method further includes:
the second control device generates the first take-over instruction based on the starting completion information of the instrument control module; and the second control device generates the second takeover instruction based on the starting completion information of the central control module.
5. The cockpit picture display method of claim 4 wherein said video display means comprises a first display module and a second display module;
the sending a display control takeover instruction to the first control device includes:
the second control device sends the first take-over instruction to the first control device so that the first display module displays a picture corresponding to the first display module; and the second control device sends the second take-over instruction to the first control device so as to enable the second display module to display the picture corresponding to the second display module.
6. The cockpit picture display method of claim 4 wherein said stopping transmission of said video data to be played by said first control means in response to said display control takeover instruction comprises:
the first control device responds to the first take-over instruction and stops sending the video data to be played to the first display module; and the first control device responds to the second take-over instruction and stops sending the video data to be played to the second display module.
7. A screen display control system, comprising: a first control device (10) and a second control device (20);
the first control device (10) is used for responding to a system starting instruction to acquire video data to be played; sending the video data to be played to a video display device so that the video display device displays the video data to be played; in response to a display control takeover instruction sent by a second control device (20), stopping sending the video data to be played;
the second control device (20) is used for acquiring data to be displayed and generating a target picture based on the data to be displayed; and sending a display control take-over command to the first control device (10); and sending the target picture to the video display device so as to enable the video display device to display the target picture.
8. The picture display control system according to claim 7,
the second control device (20) is further used for generating the first take-over instruction based on the starting completion information of the instrument control module; and generating the second takeover instruction based on the starting completion information of the central control module.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the storage medium has at least one instruction or at least one program stored therein, which is loaded and executed by a processor to implement the cockpit picture display method according to any of claims 1-6.
10. An intelligent cockpit control device comprising a processor and a memory, characterized in that said device comprises a processor and a memory, said memory having stored therein at least one instruction or at least one program, said at least one instruction or said at least one program being loaded and executed by said processor to implement the cockpit picture display method according to any of claims 1-6.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050992A (en) * | 2014-06-10 | 2014-09-17 | 浙江中科领航汽车电子有限公司 | Vehicle-mounted intelligent system with virtual instrument and information entertainment terminals |
| CN111198666A (en) * | 2018-11-20 | 2020-05-26 | 中科创达软件股份有限公司 | Multi-screen starting animation linkage method based on Hypervisor and related equipment |
| CN111976479A (en) * | 2019-05-24 | 2020-11-24 | 北京车和家信息技术有限公司 | Display screen display control system |
| CN112579014A (en) * | 2019-09-27 | 2021-03-30 | 宝能汽车集团有限公司 | Multi-screen display method and system based on Hypervisor, vehicle and storage medium |
| CN112644276A (en) * | 2019-10-12 | 2021-04-13 | 上海博泰悦臻电子设备制造有限公司 | Screen display method, vehicle and computer storage medium |
| CN113050483A (en) * | 2021-03-11 | 2021-06-29 | 深圳市阿丹能量信息技术有限公司 | Cabin domain controller system based on i.MX8 platform and Xen technology and application method |
-
2021
- 2021-08-18 CN CN202110949717.0A patent/CN113703865A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050992A (en) * | 2014-06-10 | 2014-09-17 | 浙江中科领航汽车电子有限公司 | Vehicle-mounted intelligent system with virtual instrument and information entertainment terminals |
| CN111198666A (en) * | 2018-11-20 | 2020-05-26 | 中科创达软件股份有限公司 | Multi-screen starting animation linkage method based on Hypervisor and related equipment |
| CN111976479A (en) * | 2019-05-24 | 2020-11-24 | 北京车和家信息技术有限公司 | Display screen display control system |
| CN112579014A (en) * | 2019-09-27 | 2021-03-30 | 宝能汽车集团有限公司 | Multi-screen display method and system based on Hypervisor, vehicle and storage medium |
| CN112644276A (en) * | 2019-10-12 | 2021-04-13 | 上海博泰悦臻电子设备制造有限公司 | Screen display method, vehicle and computer storage medium |
| CN113050483A (en) * | 2021-03-11 | 2021-06-29 | 深圳市阿丹能量信息技术有限公司 | Cabin domain controller system based on i.MX8 platform and Xen technology and application method |
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