CN113589730B - XEN-based multi-system control system and method for different display and related products - Google Patents

XEN-based multi-system control system and method for different display and related products Download PDF

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CN113589730B
CN113589730B CN202110872230.7A CN202110872230A CN113589730B CN 113589730 B CN113589730 B CN 113589730B CN 202110872230 A CN202110872230 A CN 202110872230A CN 113589730 B CN113589730 B CN 113589730B
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display
application
control system
configuration information
xen
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CN113589730A (en
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王志伟
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Spreadtrum Semiconductor Chengdu Co Ltd
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Spreadtrum Semiconductor Chengdu Co Ltd
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0421—Multiprocessor system
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24182—Redundancy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Digital Computer Display Output (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

The embodiment of the application provides a multi-system control system and method for an abnormal display based on XEN and a related product, wherein the method comprises the following steps: starting a virtual machine XEN, wherein the virtual machine XEN is used for providing a basic environment for the system; assembling configuration information of each application system in a basic environment; and analyzing the configuration information of each application system, receiving corresponding display data through a corresponding display controller, and displaying the display data in a corresponding display screen according to the display data of each application system. By adopting the embodiment of the application, differential control of the display screen can be realized, and the redundancy problem of communication among different devices can be reduced.

Description

XEN-based multi-system control system and method for different display and related products
Technical Field
The application relates to the technical field of wireless communication, in particular to a XEN-based multi-system control system and method for an exception display and a related product.
Background
The automobile electronic system is an electronic control system consisting of an ECU, a sensor, an MPU, dozens or even hundreds of electronic components and parts thereof; common automobile electronic systems are often separated, and a power assembly, a vehicle body control system, a dashboard, a central control system, an entertainment system and the like are respectively provided according to different divided domains, wherein the dashboard, the central control system and the entertainment system can relate to a display screen; in the future, more screen display screens can be involved in the scenes such as HUD, AR-HUD, AB columns, air-conditioning screens and the like of the intelligent cabin system; these separate electronic systems are often provided by different suppliers, and there is a significant redundancy problem with the device communication between the devices.
Disclosure of Invention
The embodiment of the application provides a multi-system different display control system and method based on XEN and related products, which can realize differentiated control of a display screen and are beneficial to reducing the redundancy problem of communication among different devices
In a first aspect, an embodiment of the present application provides an xenograph control system for multiple systems based on XEN, where the xenograph control system includes: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to a display screen, and each application system independently runs the display screens with different interfaces;
the virtual machine XEN is used for providing a basic environment for the control system of the different display;
the master control system is used for assembling the configuration information of each application system in the basic environment;
the application system is used for analyzing corresponding configuration information, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the corresponding display data.
A second aspect of the embodiments of the present application provides a method for controlling an abnormal display of multiple systems based on XEN, where the method is applied to a multiple system abnormal display system, where the system includes: the system comprises a virtual machine XEN, a master control system and a plurality of application systems, wherein the master control system is connected with the application systems, and each application system corresponds to one display screen; the method comprises the following steps:
starting a virtual machine XEN, wherein the virtual machine XEN is used for providing a basic environment for the system;
in the basic environment, assembling configuration information of each application system through the master control system;
analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
A third aspect of the embodiments of the present application provides an XEN-based multi-system control device, where the device is applied to a multi-system control system, where the system includes: the system comprises a virtual machine XEN, a master control system and a plurality of application systems, wherein the master control system is connected with the application systems, and each application system corresponds to one display screen; the device comprises:
the starting unit is used for starting a virtual machine XEN, and the virtual machine XEN is used for providing a basic environment for the system;
the assembly unit is used for assembling the configuration information of each application system through the master control system in the basic environment;
the display device comprises an analysis unit and a display unit, wherein the analysis unit is used for analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
A fourth aspect of the present application provides a chip module, comprising a transceiver component and a chip, wherein,
the chip is used for starting a virtual machine XEN, and the virtual machine XEN is used for providing a basic environment for the system; in the basic environment, assembling configuration information of each application system through the master control system; analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
A fifth aspect of the present application provides a chip, where the chip is configured to start a virtual machine XEN, and the virtual machine XEN is configured to provide a base environment for the system; in the basic environment, assembling configuration information of each application system through the master control system; analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
A sixth aspect of the present application provides a terminal device, including: a processor and a memory; and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for some or all of the steps as described in the second aspect.
A seventh aspect of embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, where the computer program is configured to make a computer execute some or all of the steps described in the second aspect of embodiments of the present application.
An eighth aspect of embodiments of the present application provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps as described in the second aspect of embodiments of the present application. The computer program product may be a software installation package.
The embodiment of the application has the following beneficial effects:
it can be seen that, by the system and method for XEN-based multi-system control over the Exception board and the related products, the virtual machine XEN can be started, and the virtual machine XEN is used for providing a basic environment for the system; in the basic environment, assembling configuration information of each application system through a master control system; the corresponding configuration information is analyzed through each application system, the display controller corresponding to the application system is determined according to the configuration information, corresponding display data are received through the display controller, and the display data are displayed in the corresponding display screen according to the display data of each application system. Therefore, the application systems corresponding to the display screens with the different interfaces can be started through configuration, so that the display screens can be controlled in a differentiated mode, and the redundancy problem of communication among different devices can be reduced.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an XEN-based multi-system exception control system according to an embodiment of the present application;
fig. 2A is a schematic flowchart of an XEN-based multi-system control method for an external display device according to an embodiment of the present application;
fig. 2B is a schematic flowchart of an XEN-based multi-system control method for an audio-visual system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an embodiment of an XEN-based multi-system meta-display control device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an embodiment of a terminal device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
In order to better understand the solution of the embodiment of the present application, a description is first given below of a terminal device that may be involved in the embodiment of the present application.
The terminal device in the embodiment of the present application is a device having a wireless communication function, and may be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, New Radio (NR), Wideband Code Division Multiple Access (WCDMA), and so on. For example, the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a desktop computer, a notebook computer, a kiosk, a vehicle-mounted terminal, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transport security (transport safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (personal area, personal digital assistant (wlphone), a handheld personal digital assistant (personal digital assistant), a handheld personal communication device with wireless communication function, a wireless terminal in industrial control (industrial control), a wireless terminal in wireless communication, a wireless terminal in transport security, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (personal digital assistant, a personal digital assistant, a handheld communication device with wireless communication function, a wireless communication terminal, a wireless communication device, a wireless communication device, a, A computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network or a terminal device in a future evolved public mobile land network (PLMN), etc.
In some embodiments of the present application, the terminal device may also be an apparatus having a transceiving function, such as a system-on-chip. The chip system may include a chip and may also include other discrete devices.
It is to be understood that reference to "at least one" in the embodiments of the present application means one or more, and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first information and the second information are different information only for distinguishing them from each other, and do not indicate a difference in the contents, priority, transmission order, importance, or the like of the two kinds of information.
The term "connected" in the embodiments of the present disclosure refers to various connection manners, such as direct connection or indirect connection, for example, different devices are connected through a communication interface, and is not limited at all.
Please refer to fig. 1, which is a schematic structural diagram of an XEN-based multi-system control system according to an embodiment of the present application. The system for controlling the different display of the XEN-based multiple systems described in this embodiment includes: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to a display screen, and each application system independently runs the display screens with different interfaces; wherein.
The virtual machine XEN is used for providing a basic environment for the control system of the different display;
the master control system is used for assembling the configuration information of each application system in the basic environment;
the application system is used for analyzing the corresponding configuration information, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the corresponding display data.
In one possible example, the display controller of each application system is the same or different.
In one possible example, the configuration information includes at least one of: kernel device tree, display screen type, display screen name.
In one possible example, the plurality of application systems includes: center control system, back row amusement system and panel board system, wherein, center control system includes: the rear entertainment system comprises an SPI screen, and the instrument panel system comprises an MIPI screen.
In one possible example, in the aspect of analyzing the configuration information of each application system, the central control system is specifically configured to:
starting a kernel of the central control system;
and analyzing the configuration information corresponding to the kernel equipment tree corresponding to the central control system through the virtual machine XEN.
In one possible example, after the analyzing the configuration information corresponding to the kernel device tree corresponding to the central control system, the central control system is further specifically configured to:
starting the drive of a display controller corresponding to the LVDS screen according to the configuration information corresponding to the kernel device tree;
and after the drive is started, starting an operating system corresponding to the central control system.
In one possible example, in terms of displaying the display data in the corresponding display screen, the central control system is specifically configured to:
analyzing display configuration information corresponding to the LVDS screen according to the display screen type corresponding to the central control system;
and displaying the display data on the LVDS screen according to the display configuration information.
It can be seen that the xenographic control system based on XEN multiple systems described in the embodiments of the present application can provide a basic environment for the system; in the basic environment, assembling configuration information of each application system through a master control system; each application system can analyze the corresponding configuration information, receive the corresponding display data through the corresponding display controller, and display the display data in the corresponding display screen according to the corresponding display data. Therefore, the application systems corresponding to the display screens of the different interfaces can be started through configuration, and therefore the display screens can be controlled in a differentiated mode.
Please refer to fig. 2A, which is a flowchart illustrating an embodiment of an XEN-based multi-system interactive control method according to an embodiment of the present application. The XEN-based multi-system multimedia display control method described in this embodiment is applied to a terminal device, and the terminal device may include an XEN-based multi-system multimedia display system, where the system includes: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to a display screen, and each application system independently runs the display screens with different interfaces; the method comprises the following steps:
201. and starting a virtual machine XEN, wherein the virtual machine XEN is used for providing a basic environment for the system.
202. And in the basic environment, assembling the configuration information of each application system through the master control system.
203. Analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
As shown, the system may include: the virtual machine XEN, the host system, and multiple application systems, etc., are not limited herein.
The virtual machine XEN can be used for providing a basic environment for the whole platform, and in specific implementation, after hardware in a system is initialized, the virtual machine XEN is started, and a virtual machine environment is created to provide the basic environment for the whole system platform.
Among them, different independent systems are divided in an automotive electronic system, each system is separated and independent from each other, and the system can be divided into different application systems according to different application functions of the system, for example, a system providing an air conditioning operation can be referred to as an air conditioning function, and the like. The application system may include at least one of: a central control system (or an In-Vehicle integrated information processing (IVI)), a Rear Entertainment system (RSE), a dashboard (Cluster) system, an air conditioning control system, a Heads Up Display (HUD) system, and the like, which are not limited herein.
The application systems and the master control system may respectively correspond to different operating systems, and the operating systems may include at least one of the following: an Android (Android) system, a Linux operating system, an agl (automated Grade Linux) system, a Real-time operating system (RTOS), a yocoto system, and the like, without limitation.
Each application system can correspond to a display screen and a display controller corresponding to the display screen, wherein the display controllers corresponding to each application system can be the same or different, and the display controller corresponding to each application system can be determined according to configuration information.
The display controller may be configured with a driver, and may be configured to modulate a phase, a peak value, a frequency, and the like of a potential signal on an electrode in the display screen to establish a driving electric field, so as to achieve a display effect of the display screen, or may render display data according to configuration information (for example, a resolution, a display format, a pixel dot pitch, a scanning frequency, a refresh rate, and the like, without limitation) of the display screen, so as to obtain a display picture and the like.
Wherein, the configuration information of the display screen can be different; for example, the display screens may be different types of display screens with different resolutions, each display screen may independently adjust the display effect, independently turn on or off, and so on.
The main control system can be communicated with each application system, the main control system can send a control instruction to the application systems, and can independently control each application system to work, for example, the air conditioner control system can be controlled to turn on an air conditioner, and the corresponding temperature, the corresponding humidity, the wind sweeping angle and the like are displayed on the corresponding display screen.
The master control system may be further configured to assemble configuration information of each application system, where each application system may correspond to the configuration information, and the configuration information may include at least one of the following information: a kernel device tree, a display type, a display name, etc., without limitation.
Each application system may correspond to an interface, and the interface may include at least one of the following: a Mobile Industry Processor Interface (MIPI), a Serial Peripheral Interface (SPI), a Low-Voltage Differential Signaling (LVDS) Interface, a High-Definition digital Interface (DPU), a High-Definition Multimedia Interface (HDMI), and the like, which are not limited herein.
It can be seen that the XEN-based multi-system heterogeneous display method described in the embodiment of the present application can start a virtual machine XEN, and the virtual machine XEN is used for providing a basic environment for a system; assembling configuration information of each application system in a basic environment; and analyzing the configuration information of each application system, receiving corresponding display data through a corresponding display controller, and displaying the display data in a corresponding display screen according to the display data of each application system. Therefore, the application systems corresponding to the display screens of the different interfaces can be started through configuration, and therefore the display screens can be controlled in a differentiated mode.
In one possible example, the display controller of each application system is the same or different.
The display controller can be used for controlling the display functions of different application systems, so that the application systems can display corresponding display contents through the display screen.
In one possible example, when the system includes a plurality of application systems, if the interfaces of the display corresponding to each application system are different, the display controller corresponding to each application system may be different; the interfaces of the same display, and the corresponding display controllers can be the same, that is, the application systems of the same display screen interface can be controlled by one display controller; for example, if interfaces of the display screens corresponding to the central control system, the instrument panel system and the air conditioner control system are all MIPI, that is, MIPI screens, the display screens of the 3 systems can be controlled by the MIPI screen display controller to display.
In one possible example, the configuration information includes at least one of: kernel device tree, display screen type, display screen name.
In one possible example, the plurality of application systems includes: center control system, back row amusement system and panel board system, wherein, center control system includes: the rear entertainment system comprises an SPI screen, and the instrument panel system comprises an MIPI screen.
The central control system is different from the master control system, the central control system can control one or more devices which are connected together, and the master control device can be used for controlling the central control system.
The rear entertainment system is generally located on the central armrest of the rear row, and can be used for controlling the functions of a media source of the rear row, volume adjustment, opening and closing of a panorama skylight sunshade curtain and the like.
The instrument panel system can be used for controlling a speedometer, a tachometer, an engine oil pressure gauge, a water temperature gauge, a fuel gauge, a charging gauge and the like.
In this application, the LVDS screen may correspond to the display screen of the LVDS interface, and the SPI screen may refer to the display screen of the SPI interface corresponding to the interface, and so on, which are not repeated herein. In addition, the operating systems of each of the above systems may be the same or different.
For example, as shown in fig. 2B, a flowchart of a method for controlling an exclusive display based on an XEN multi-system is shown, where the system includes a main control system and a virtual machine XEN, and an application system may include: the system comprises a central control system, a back row entertainment system and an instrument panel system, wherein each application system corresponds to different display screen interfaces and different operating systems, and the back row entertainment system corresponds to an RTOS system using an SPI interface screen, an Android system using an LVDS interface screen in the central control system and a Yocoto system using an MIPI interface screen in the instrument panel system.
In one possible example, a virtual machine XEN may be started, where the virtual machine XEN is used to provide a basic environment for the entire system, and the main control system may be pre-configured with central control system configuration information of the central control system, back row entertainment system configuration information of the back row entertainment system, and dashboard system configuration information of the dashboard system, for example, configuration information of a display screen controller corresponding to the central control system (where the central control system corresponds to the LVDS screen display controller, the back row entertainment system corresponds to the SPI screen display controller, and the dashboard system corresponds to the MIPI screen display controller) may be specifically defined in an equipment tree file formulated by a file of configuration information corresponding to each application system; furthermore, an analysis configuration file corresponding to each application system can be created in a list corresponding to the virtual machine XEN, after the system starts a kernel, the central control system can read configuration information corresponding to a kernel equipment tree in the analysis configuration file, and start a display controller driver (for example, an MIPI screen display controller driver corresponding to an instrument panel system) related to a display screen corresponding to each application system, and initialize the display screen according to configuration information (for example, resolution, display screen type, display screen name and the like) of the display screen defined in the configuration file corresponding to each application system in the process of starting the display controller driver; after the kernel is started, the operating system corresponding to each application system can be started, each application system can apply for the memory to the kernel and fill the memory allocated to the application system with display data, the display data are sent to the corresponding display controller after the filling is finished, the display controller can refresh the display data to the display screen after receiving the corresponding display data, and the display operation of each application system is finished, so that the different display control of multiple systems can be realized.
In addition, each application system can be independently controlled by a user, and the content in the display screen can be independently displayed and controlled, so that the content displayed in the display screen can be independently controlled, and the improvement of user experience is facilitated.
If the application system is a central control system, a heterogeneous display control method based on XEN multisystem will be described below with reference to the central control system.
In one possible example, in terms of the parsing of the configuration information of each application system, the method may include the following steps: starting a kernel of the central control system; and analyzing the configuration information corresponding to the kernel equipment tree corresponding to the central control system through the virtual machine XEN.
In one possible example, after parsing the configuration information corresponding to the kernel device tree corresponding to the central control system, the method may include the following steps: starting a drive of a display controller corresponding to the LVDS screen according to the configuration information corresponding to the kernel device tree; and after the drive is started, starting an operating system corresponding to the central control system.
In one possible example, in terms of displaying the display data in the corresponding display screen, the method may include the following steps: analyzing display configuration information corresponding to the LVDS screen according to the display screen type corresponding to the central control system; and displaying the display data on the LVDS screen according to the display configuration information.
The operating system corresponding to the central control system may be an Android system.
In specific implementation, if the display screen connected with the central control system is an LVDS screen, the virtual machine XEN may be used to analyze configuration information of a preset display controller (LVDS controller) in a kernel device tree file specified by an ivi.cfg (a configuration file of the central control system stored in the main control system), and then, after the kernel is started, read device tree information configured in the ivi.cfg to start a corresponding LVDS-related display controller driver; meanwhile, when the display controller is driven to start, according to the display screen type defined in ivi.cfg, analyzing the display configuration information corresponding to the LVDS screen, such as information of screen resolution, format and the like, and performing initialization operation; after the kernel is started, the Android system corresponding to the central control system is started, and then the kernel applies for the memory, the application corresponding to the Android system (the application can refer to the application for providing the display function in the central control system) fills the memory with display data, the display data is sent to the display controller after the filling, and the display controller refreshes the display screen after receiving the data, so that the display of the central control screen is completed.
Optionally, if the application system providing the display function simultaneously with the center control system further includes a rear entertainment system and a dashboard system, the display of the display screens of other application systems, for example, the display of the display screen corresponding to the rear entertainment system and the display of the display screen corresponding to the dashboard system, may be simultaneously implemented in the same manner as described above.
The interface of the display screen corresponding to each application system is different, and the operating systems of the application systems can be the same or different; thus, the XEN-based multi-system display can be realized.
If the application system is a back row entertainment system, the following describes a heterogeneous display control method for multiple systems based on XEN in combination with the back row entertainment system.
In one possible example, for a back row entertainment system, a display screen connected to the system is an SPI screen, and configuration information of an SPI controller defined in advance can be analyzed in a kernel device tree file specified by res.cfg through a virtual machine XEN, and then a domu-res analysis configuration file res.cfg is created through XEN tools, and after the kernel is started, the device tree information configured in the res.cfg is read to start a corresponding SPI related display controller driver; when the display controller is driven to start, analyzing information such as screen resolution, format and the like according to the display screen type defined in res.cfg, and carrying out initialization operation on the display; after the kernel is started, the operating system corresponding to the back-row entertainment system is started, for example, the operating system may be an Android system, and then an application corresponding to the started Android system (the application may refer to an application for providing a display function in the back-row entertainment system) applies for a memory from the kernel, the application fills display data in the memory, the display data is sent to the display controller after the filling, the display controller refreshes the display data on a display screen after receiving the display data, and the display of the display screen corresponding to the back-row entertainment system is completed.
If the application system is an instrument panel system, the method for controlling the different display of the XEN-based multi-system is described below by combining the instrument panel system.
In one possible example, the dashboard system is connected with an MIPI screen, configuration information of DPUs, DSIs and DPHY controllers is defined in a device tree file specified by cluster. When the display controller is driven to start, the initialization operation is carried out according to the display screen type defined in cluster.cfg, and information such as screen resolution, format and the like is analyzed; after the kernel is started, the operating system corresponding to the dashboard system is started, for example, the operating system may be a yocoto system, and then the started application (the application may refer to an application for providing a display function in the dashboard system) applies for a memory to the kernel, the application fills display data in the memory, the display data is sent to the display controller after the filling, and the display controller refreshes the display screen after receiving the data, thereby completing the display of the display screen corresponding to the dashboard system.
The three application systems (the central control system, the back row entertainment system and the instrument panel system) can synchronously carry out system configuration through the central control system, and are distributed and operated simultaneously after the configuration is finished, namely, the display data corresponding to each application system is analyzed, the display data corresponding to each application system can be the same or different, each application system can be controlled independently, and the display data corresponding to each application system is displayed in the corresponding display screen, so that the multi-system different display function is realized, and the display data corresponding to the multi-system different display system can be displayed in different display screens respectively.
Optionally, in this embodiment of the application, in addition to the above system, a HUD system, an air conditioner screen system, and the like are further included, and a specific display mode of the above system is the same as that of the above central control system, and is not described herein again.
In one possible example, when the multiple application systems to be started are all the same interface (e.g., all MIPI interfaces), that is, the interfaces of the connected display screen are the same type (e.g., all MIPI screens), for example, three MIPI interfaces may be extended to a central control system (an Android system using a MIPI interface screen), a dashboard system (a yocoto system using a MIPI interface screen), and a back-row system (an RTOS system using a MIPI interface screen), the different display control for different application systems may be implemented in the same operating system (e.g., an operating system corresponding to the first application system) to avoid resource conflict.
For the situation that a plurality of application systems have partial hardware resource multiplexing, for example, the display drivers of three systems have partial resource multiplexing, and for the partial multiplexed resources; for example, a certain power domain is controlled by only powering on a first system and not requiring frequent operation of a plurality of systems, so that the use conflict of one hardware resource can be avoided.
In one possible example, if there is a failure of the display screen of one application system, acquiring display conditions of the remaining systems, where the display conditions may include: an idle state, a non-idle state, and the like, which are not limited herein, if there is a display condition of at least one remaining application system being an idle state, it may be determined whether a matching degree of the configuration information of the remaining application system and the configuration information of the application system with the display screen failure exists, and when the matching degree is greater than or equal to a preset threshold, display of display data corresponding to the application system with the failure is implemented through a display controller of the remaining application system, where a specific display mode is consistent with the central control system, the dashboard system, or the rear entertainment system, and is not described herein again.
The preset threshold value can be set by a user or defaulted by a system, the preset threshold value is not limited, when the matching degree is greater than or equal to the preset threshold value, the correlation between the display controllers of the two application systems or the display screens of the same interface can be determined, then the display screens of the rest application systems can be determined to be reusable display screens of the application systems with display screen faults, and therefore the display multiplexing of different systems can be realized based on the XEN multi-system different display system, and the user experience is improved.
In one possible example, if the number of screen interfaces of a display screen which can be supported by a System On Chip (SOC) corresponding to the heterogeneous display control System is limited, the System On Chip (SOC) can be expanded by multiplexing the existing display controller through front-end and back-end drivers, so that the System can be expanded into a multi-application System to meet the requirement of a multi-System heterogeneous display scene, and if the SOC only supports 1 MIPI interface, 2 application systems can be expanded through front-end and back-end technology.
In a possible example, after one application system is extended into multiple application systems through the existing display controller, only one display screen may be in an idle state, or only one display screen may be available for displaying data, so that a screen splitting operation may be performed in the display screen according to display data corresponding to different application systems, so as to achieve that a single display screen displays display data of multiple systems, and each application system may independently control its corresponding display data.
In a specific implementation, the performing of the screen splitting operation in the display screen according to the display data corresponding to different application systems may include the following steps: determining a display attribute corresponding to each application system according to display data corresponding to different application systems, where the display attribute may include: color, font, size, dimension, etc., without limitation; and determining a display area corresponding to each application system according to the display attribute corresponding to each application system, performing screen splitting operation on the display screen according to the display area corresponding to each application system to obtain an application interface corresponding to each application system, so that one display screen can display data of multiple systems, and in addition, performing the screen splitting operation again according to the display data corresponding to each application system in a preset time period (which can be set by a user or is default by the system, but is not limited herein) to dynamically adjust the display area of each application system according to real-time display data.
In accordance with the above, the following is a device for implementing the XEN based multi-system control method, specifically, the following is:
please refer to fig. 3, which is a schematic structural diagram of an embodiment of an xenographic control device 300 based on XEN multiple systems according to an embodiment of the present application. The XEN-based multi-system video-only control device 300 described in this embodiment is applied to a terminal device, and the terminal device may include an XEN-based multi-system video-only system, where the system includes: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to a display screen, and each application system independently runs the display screens with different interfaces; the device comprises: an initiating unit 301, a fitting unit 302 and an analyzing unit 303, wherein,
in one possible example, the apparatus 300 is configured to execute various processes and steps corresponding to the terminal device in the indication method.
The starting unit 301 is configured to start a virtual machine XEN, where the virtual machine XEN is used to provide a basic environment for the system;
the assembling unit 302 is configured to assemble, in the basic environment, configuration information of each of the application systems through the master control system;
the analyzing unit 303 is configured to analyze corresponding configuration information through each application system, determine a display controller corresponding to the application system according to the configuration information, receive corresponding display data through the display controller, and display the display data in the corresponding display screen according to the display data of each application system.
The starting unit 301 may be configured to implement the method described in step 201, the assembling unit 302 may be configured to implement the method described in step 202, and the parsing unit 303 may be configured to implement the method described in step 203.
It can be seen that, by the adoption of the XEN-based multi-system control device for the Exception board, the virtual machine XEN can be started, and the virtual machine XEN is used for providing a basic environment for the system; in the basic environment, assembling configuration information of each application system through a master control system; the corresponding configuration information is analyzed through each application system, the display controller corresponding to the application system is determined according to the configuration information, corresponding display data are received through the display controller, and the display data are displayed in the corresponding display screen according to the display data of each application system. Therefore, the application systems corresponding to the display screens of the different interfaces can be started through configuration, and therefore the display screens can be controlled in a differentiated mode.
In a possible example, if the application system is a central control system, in terms of analyzing the configuration information of each application system, the analyzing unit 303 is specifically configured to:
starting a kernel of the central control system;
and analyzing the configuration information corresponding to the kernel equipment tree corresponding to the central control system through the virtual machine XEN.
In a possible example, if the application system is a central control system, after the configuration information corresponding to the kernel device tree corresponding to the central control system is analyzed, the analyzing unit 303 is specifically configured to:
starting a drive of a display controller corresponding to the LVDS screen according to the configuration information corresponding to the kernel device tree;
and after the drive is started, starting an operating system corresponding to the central control system.
In a possible example, in terms of displaying the display data in the corresponding display screen, the parsing unit 303 is specifically configured to:
analyzing display configuration information corresponding to the LVDS screen according to the display screen type corresponding to the central control system;
and displaying the display data on the LVDS screen according to the display configuration information.
It can be understood that the functions of each program module of the XEN-based multi-system control device in this embodiment may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, which is not described herein again.
Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different module units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.
In accordance with the foregoing, please refer to fig. 4, which is a schematic structural diagram of an embodiment of a terminal device according to an embodiment of the present application. As shown, the system includes a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, in this embodiment, the terminal device may include an XEN-based multi-system multimedia system, where the system includes: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to a display screen, and each application system independently runs the display screens with different interfaces; the program includes instructions for performing the steps of:
starting a virtual machine XEN, wherein the virtual machine XEN is used for providing a basic environment for the system;
in the basic environment, assembling configuration information of each application system through the master control system;
analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
It can be seen that, by the terminal device described in the embodiment of the present application, the virtual machine XEN can be started, and the virtual machine XEN is used for providing a basic environment for the system; in a basic environment, assembling configuration information of each application system through a master control system; the corresponding configuration information is analyzed through each application system, the display controller corresponding to the application system is determined according to the configuration information, corresponding display data are received through the display controller, and the display data are displayed in the corresponding display screen according to the display data of each application system. Therefore, the application systems corresponding to the display screens of the different interfaces can be started through configuration, and therefore the display screens can be controlled in a differentiated mode.
In one possible example, if the application system is a central control system, the program includes instructions for performing the following steps in the aspect of analyzing the configuration information of each application system:
starting a kernel of the central control system;
and analyzing the configuration information corresponding to the kernel equipment tree corresponding to the central control system through the virtual machine XEN.
In one possible example, if the application system is a central control system, after the configuration information corresponding to the kernel device tree corresponding to the central control system is analyzed, the program includes instructions for performing the following steps:
starting the drive of a display controller corresponding to the LVDS screen according to the configuration information corresponding to the kernel device tree;
and after the drive is started, starting an operating system corresponding to the central control system.
In one possible example, the program includes instructions for performing the following steps in displaying the display data in the corresponding display screen:
analyzing display configuration information corresponding to the LVDS screen according to the display screen type corresponding to the central control system;
and displaying the display data on the LVDS screen according to the display configuration information.
The embodiment of the application provides a chip module, which comprises a transceiver component and a chip, wherein,
the chip is used for starting a virtual machine XEN, and the virtual machine XEN is used for providing a basic environment for the system; in the basic environment, assembling configuration information of each application system through the master control system; analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
The embodiment of the application further provides a chip, wherein the chip is used for starting a virtual machine XEN, and the virtual machine XEN is used for providing a basic environment for the system; in the basic environment, assembling configuration information of each application system through the master control system; analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
The embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a program, and when the program is executed, the program includes part or all of the steps of any one of the XEN-based multi-system control methods described in the method embodiments.
While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus (device), or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. A computer program stored/distributed on a suitable medium supplied together with or as part of other hardware, may also take other distributed forms, such as via the Internet or other wired or wireless telecommunication systems.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor or other programmable XEN-based multi-system control device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable XEN-based multi-system control device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable XeN-based multi-system standby control to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable XeN-based multi-system discrete display control device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer implemented process such that the instructions which execute on the computer or other programmable device provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. An XEN-based multi-system standby control system, comprising: the system comprises a virtual machine XEN, a main control system and a plurality of application systems, wherein the main control system is connected with the application systems, each application system corresponds to one display screen, and each application system independently operates the display screens with different interfaces;
the virtual machine XEN is used for providing a basic environment for the control system of the different display;
the master control system is used for assembling the configuration information of each application system in the basic environment;
the application system is used for analyzing corresponding configuration information, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the corresponding display data.
2. The system of claim 1, wherein the display controller of each application system is the same or different.
3. The system of claim 1, wherein the configuration information comprises at least one of: kernel device tree, display screen type, display screen name.
4. The system according to any one of claims 1-3, wherein the plurality of application systems comprises: center control system, back row amusement system and panel board system, wherein, center control system includes: the rear entertainment system comprises an SPI screen, and the instrument panel system comprises an MIPI screen.
5. The system according to claim 4, wherein in the aspect of analyzing the corresponding configuration information, the central control system is specifically configured to:
starting a kernel of the central control system;
and analyzing the configuration information corresponding to the kernel equipment tree corresponding to the central control system through the virtual machine XEN.
6. The system of claim 5, wherein after the parsing the configuration information corresponding to the kernel device tree corresponding to the central control system, the central control system is further specifically configured to:
starting the drive of a display controller corresponding to the LVDS screen according to the configuration information corresponding to the kernel device tree;
and after the drive is started, starting an operating system corresponding to the central control system.
7. The system of claim 6, wherein in displaying the display data in the corresponding display screen, the central control system is specifically configured to:
analyzing display configuration information corresponding to the LVDS screen according to the display screen type corresponding to the central control system;
and displaying the display data on the LVDS screen according to the display configuration information.
8. A XEN-based multi-system differential display method is applied to a multi-system differential display system, wherein the system comprises: the system comprises a virtual machine XEN, a master control system and a plurality of application systems, wherein the master control system is connected with the application systems, and each application system corresponds to one display screen;
the method comprises the following steps:
starting a virtual machine XEN, wherein the virtual machine XEN is used for providing a basic environment for the system;
in the basic environment, assembling configuration information of each application system through the master control system;
analyzing corresponding configuration information through each application system, determining a display controller corresponding to the application system according to the configuration information, receiving corresponding display data through the display controller, and displaying the display data in the corresponding display screen according to the display data of each application system.
9. A terminal device comprising a processor, a memory for storing one or more programs and configured for execution by the processor, the programs comprising instructions for performing the steps of the method of claim 8.
10. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to claim 8.
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