CN115793949A - Vehicle machine system, method for sharing touch equipment, vehicle and storage medium - Google Patents
Vehicle machine system, method for sharing touch equipment, vehicle and storage medium Download PDFInfo
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Abstract
The application relates to a vehicle machine system, a method for sharing touch equipment, a vehicle and a storage medium, wherein the system comprises: a host running a first operating system and comprising a virtual machine monitor; and a guest running a second operating system and running in a virtualized environment provided by the virtual machine monitor; wherein the virtual machine monitor is configured to pass through a touch device to the client such that the client can receive touch operations with respect to the touch device.
Description
Technical Field
The present application relates to a vehicle machine system of a vehicle, and in particular, to a vehicle machine system, a method of sharing a touch device, a vehicle, and a storage medium.
Background
With the rapid development of intelligent automobiles, the digital cockpit becomes the "second living room" of more and more people. In order to be compatible with rich Android (Android) system application ecology, most manufacturers use an Android operating system to realize functions of navigation, audio and video, entertainment and the like in a cockpit domain, and the functions generally need to use a touch screen as interactive equipment. But the Android operating system is difficult to meet the real-time, safe and robust functional requirements of the vehicle machine. On the other hand, the QNX system has good performance in the real-time and safe application field. Therefore, virtualizing the Android operating system on the Hypervisor (virtual machine monitor) of QNX is a very popular solution. The QNX has the characteristics of quick starting and robust functions, so that some functions (such as 360-degree look-around function and the like) needing quick starting in the cockpit can be realized in the QNX, and the functions can use a touch screen. However, the remaining majority of touch events in the cockpit are effective in the Android operating system's applications. Therefore, there is a need for efficient touch screen sharing and fast response to touch events between the QNX system and the Android system.
In view of the above, there is a need for an improved method of sharing a touch device.
Disclosure of Invention
The embodiment of the application provides a vehicle-mounted machine system, a method for sharing touch equipment, a vehicle and a storage medium, and the method is used for sharing the touch equipment among a plurality of operating systems of the vehicle-mounted machine system.
According to an aspect of the present application, there is provided a car machine system including a plurality of operating systems, including: a host running a first operating system and including a virtual machine monitor; and a guest running a second operating system and running in a virtualized environment provided by the virtual machine monitor; wherein the virtual machine monitor is configured to pass through a touch device to the client such that the client can receive touch operations with respect to the touch device.
In some embodiments of the present application, optionally, the virtual machine monitor is configured to pass through register data in the touch device, interrupt events to the client.
In some embodiments of the application, optionally, the client includes a first touch device driver configured to read the register data according to the interrupt event to form touch information about the touch operation, and the touch information includes the number of touch points and coordinates thereof.
In some embodiments of the application, optionally, the system further comprises a communication channel established between the host and the client through the virtual machine monitor, and the client is capable of sending the touch information to the host via the communication channel, so that the host can receive the touch operation with respect to the touch device.
In some embodiments of the present application, optionally, the communication channel is constructed based on a virtual memory device provided by the virtual machine monitor.
In some embodiments of the present application, optionally, the host includes a second touch device driver configured to receive the touch information and transmit the touch information to a touch application of the host.
According to another aspect of the present application, there is provided a method of sharing a touch device between a plurality of operating systems of a car machine system, the car machine system including a host running a first operating system and a client running a second operating system, and the method including the steps of: providing, by a host, a virtual machine monitor, and the guest running in a virtualization environment provided by the virtual machine monitor; and transparently communicating a touch device to the client via the virtual machine monitor such that the client can receive touch operations with respect to the touch device.
In some embodiments of the present application, optionally, the passthrough of the touch device to the client via the virtual machine monitor comprises: and transmitting register data and interrupt events in the touch equipment to the client.
In some embodiments of the present application, optionally, the client comprises a first touch device driver, and the passthrough of a touch device to the client via the virtual machine monitor comprises: reading, by the first touch device driver, the register data according to the interrupt event to form touch information about the touch operation, and the touch information includes the number of touch points and coordinates thereof.
In some embodiments of the present application, optionally, the in-vehicle machine system further includes a communication channel established between the host machine and the client machine through the virtual machine monitor, and the method further includes: sending the touch information to the host machine via the communication channel so that the host machine can receive the touch operation related to the touch device.
In some embodiments of the present application, optionally, the communication channel is constructed based on a virtual memory device provided by the virtual machine monitor.
In some embodiments of the application, optionally, the host includes a second touch device driver, and the method further includes: and receiving the touch information through the second touch device driver and transmitting the touch information to the touch application of the host machine.
According to another aspect of the present application, there is provided a vehicle comprising any one of the vehicle machine systems described above.
According to another aspect of the present application, there is provided a computer-readable storage medium having stored therein instructions which, when executed by a processor, cause the processor to perform any of the methods described above.
According to the in-vehicle system, the method for sharing the touch device, the vehicle and the storage medium, the touch device can be shared among a plurality of operating systems of the in-vehicle system, and therefore the operating experience of the operating systems in a virtual environment can be improved.
Drawings
The above and other objects and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like or similar elements are designated by like reference numerals.
FIG. 1 illustrates a vehicle machine system according to some examples;
FIG. 2 illustrates a vehicle machine system according to an embodiment of the present application;
FIG. 3 illustrates a method of sharing a touch device according to one embodiment of the present application.
Detailed Description
For the purposes of brevity and explanation, the principles of the present application are described herein with reference primarily to exemplary embodiments thereof. However, those skilled in the art will readily appreciate that the same principles are equally applicable to all types of in-vehicle systems, methods of sharing touch devices, vehicles, and storage media, and that these same or similar principles may be implemented therein, with any such variations not departing from the true spirit and scope of the present application.
At present, a common method for sharing a touch screen between a QNX system and an Android system is that the QNX system directly responds to a touch event, and then the QNX system constructs a virtual touch device for the Android system to transmit the touch event to the Android system. The virtualization process brings certain loss to the touch response speed of the Android system. Particularly, under the condition that most of touch scenes are in an Android system, the method generally brings great performance loss to a vehicle machine system, so that user experience is influenced.
Fig. 1 illustrates a car machine system according to some examples, and as shown, the car machine system 10 includes a host 110 running a first operating system and a client 120 running a second operating system. Therein, host 110 runs virtual machine monitor 111, which is used to provide a virtualized environment for a second operating system to run on. Virtual machine monitor 111 can receive data from touch device 101 and pass up to touch device driver 112 of host 110. The touch device driver 112 then passes the data to the resource manager 113. In addition, host 110 also constructs a virtual touch device 114, and resource manager 113 can pass data from touch device 101 to virtual touch device 114, and can be invoked by touch device driver 121 of client 120.
As understood, resource manager 113 can continue to pass data from touch device 101 to upper layers to enable interaction with applications in host 110; touch device driver 121 can also continue to pass data from touch device 101 to upper layers and thereby enable interaction with applications in client 120. Since the data acquired by the touch device driver 121 needs to be processed by the host 110 and forwarded through the virtual touch device 114, the touch response speed in the Android system may be affected.
According to an aspect of the present application, a car machine system including a plurality of operating systems is provided. As shown in fig. 2, the in-vehicle system 20 includes a host 210 running a first operating system and a client 220 running a second operating system. Therein, host 210 runs virtual machine monitor 211, which is used to provide a virtualized environment for the second operating system of client 220 to run on.
The virtual machine monitor 211 of the host 210 can pass through the touch device 201 to the client 220 so that the client 220 can receive touch operations with respect to the touch device 201. Since the touch device 201 is passed through to the client 220, the delay of data transmission and processing is greatly reduced compared to the example in fig. 1, thereby ensuring the touch interaction experience of the application running on the client 220. Since most of the in-vehicle system applications are run on the client 220, and the applications run on the host 210 are relatively few and generally insensitive to interaction delay, the in-vehicle system 20 will obtain a better comprehensive touch interaction experience.
Specifically, in some examples, virtual machine monitor 211 is configured to pass through register data in touch device 201, interrupt events, to client 220, thereby enabling pass-through of touch device 201 to client 220. In this way, the touch device 201 will be operable as a peripheral to the client 220 that it directly manages itself.
In some embodiments of the present application, the client 220 includes a first touch device driver 221, and the first touch device driver 221 may read the register data according to the interrupt event to form touch information regarding the touch operation, where the touch information includes the number of touch points and coordinates thereof. As is understood, the first touch device driver 221 can pass touch information to upper layers and thereby enable interaction with an application in the client 220.
In some embodiments of the present application, the in-vehicle machine system 20 further includes a communication channel 230 established between the host machine 210 and the client machine 220 through the virtual machine monitor 211, and the client machine 220 can transmit the touch information to the host machine 210 via the communication channel, so that the host machine 210 can receive the touch operation on the touch device 201. In some examples, communication channel 230 is built based on virtual memory devices provided by virtual machine monitor 211. Since both host 210 and client 220 can target virtual memory, the virtual memory will serve as a common channel for fast forwarding of data.
In some embodiments of the present application, the host 210 comprises a second touch device driver 212 configured to receive touch information and pass it to the touch application of the host 210. As will be appreciated, the second touch device driver 212 can also pass touch information to the upper layer to enable interaction with an application in the host 210.
In some embodiments of the present application, the first operating system in the in-vehicle machine system 20 is QNX, and the second operating system is Android. Due to the expansibility of the Android operating system, most manufacturers support functions such as navigation, audio and video, entertainment and the like in the cockpit domain by using the Android operating system. The QNX system performs well in real-time and safe application fields, so some functions (for example, 360-degree look-around function, etc.) requiring quick start in the cockpit can be implemented in the QNX, and these functions can also use a touch screen. The Android operating system in the in-vehicle machine system 20 according to the application can bear most of applications, and due to the fact that the in-vehicle machine system 20 controls the delay of the touch equipment 201, the overall use feeling of the in-vehicle machine system 20 is better.
Some examples of the in-vehicle machine system 20 described above consider that most touch scenes are in the Android system, and therefore, in order to implement application fast response under the Android system, the in-vehicle machine system 20 passes through the touch screen device to the Android system in the virtual machine monitor of the QNX system, and the Android directly responds to the touch event. Because the Android system directly responds to the touch event, the performance loss of the Android touch event can be reduced to the maximum extent. In addition, the car machine system 20 can forward the touch event to the QNX system in the Android kernel, so that the applications summarized by the QNX system can respond to the touch event early even at cold start.
The in-vehicle system 20 described above provides a new solution for allowing a host and a client to share a touch device in a in-vehicle virtualization environment. According to the scheme, the host machine and the client machine can quickly respond to the touch event, and performance loss caused by virtualization can be reduced to the maximum extent. The scheme can provide a new choice for flexibly and quickly adapting to the service requirement.
According to another aspect of the present application, a method for sharing a touch device among a plurality of operating systems of a car machine system is provided. The in-vehicle machine system comprises a host machine running a first operating system and a client machine running a second operating system. As shown in fig. 3, a method 30 of sharing a touch device (hereinafter referred to as method 30) includes the following steps: providing a virtual machine monitor by the host machine in step S302, and the client running in a virtualization environment provided by the virtual machine monitor; and in step S304, the touch device is passed through to the client via the virtual machine monitor so that the client can receive a touch operation with respect to the touch device. The method 30 can pass the touch device to the client according to the above steps, so that the delay of data transmission and processing is greatly reduced compared with the prior art, thereby ensuring the touch interaction experience of the application running on the client. Because most of the in-vehicle system applications are run on the client, and the applications run on the host are relatively few and generally insensitive to interaction delay, the in-vehicle system can obtain better comprehensive touch interaction experience.
Moreover, the working principle of each step of the method 30 may be developed with reference to the content described above with respect to the in-vehicle machine system 20, and the related content is incorporated herein by reference, which is not described herein for brevity.
In some embodiments of the present application, the passthrough of the touch device to the client via the virtual machine monitor in step S304 comprises: and transmitting register data and interrupt events in the touch device to the client.
In some embodiments of the present application, the client comprises a first touch device driver, and the passthrough of the touch device to the client via the virtual machine monitor in step S304 comprises: and reading the register data according to the interrupt event by the first touch device driver to form touch information related to the touch operation, wherein the touch information comprises the number of touch points and the coordinates thereof.
In some embodiments of the present application, the in-vehicle machine system further comprises a communication channel established between the host machine and the client machine through the virtual machine monitor, and the method 30 further comprises the following steps (not shown in the figure): and sending the touch information to the host machine through the communication channel so that the host machine can receive touch operation related to the touch equipment.
In some embodiments of the present application, the communication channel is built based on virtual memory devices provided by a virtual machine monitor.
In some embodiments of the application, the host comprises a second touch device driver, and the method 30 further comprises the steps (not shown in the figures) of: and receiving touch information through a second touch device driver and transmitting the touch information to the touch application of the host machine.
In some embodiments of the present application, the first operating system is QNX and the second operating system is Android. Due to the expansibility of the Android operating system, most manufacturers support functions such as navigation, audio and video, entertainment and the like in the cockpit domain by using the Android operating system. The QNX system performs well in real-time and safe application fields, so some functions (for example, 360-degree look around function, etc.) in the cockpit that need to be started quickly can be implemented in QNX, and these functions can also use a touch screen. According to the method 30, the delay control of the touch equipment on the Android operating system side can be achieved, and the overall use feeling of the car machine system is better.
According to another aspect of the present application, there is provided a vehicle comprising any one of the vehicle machine systems described above.
According to another aspect of the present application, there is provided a computer readable storage medium having stored therein instructions that, when executed by a processor, cause the processor to perform any one of the methods of sharing a touch device as described above. The term computer-readable media as used in this application includes all types of computer storage media, including general-purpose and special-purpose computingAny available media that can be accessed by the machine. By way of example, computer-readable media may include RAM, ROM, EPROM, E 2 PROM, registers, hard disk, removable disk, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other temporary or non-temporary medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. A disk, as used herein, typically reproduces data magnetically, while a disk reproduces data optically with a laser. Combinations of the above should also be included within the scope of computer-readable media. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
The above are merely specific embodiments of the present application, but the scope of the present application is not limited thereto. Other possible variations or substitutions may occur to those skilled in the art based on the teachings herein, and are intended to be covered by the present disclosure. In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The protection scope of this application is subject to the description of the claims.
Claims (14)
1. The utility model provides a car machine system including a plurality of operating system which characterized in that, car machine system includes:
a host running a first operating system and including a virtual machine monitor; and
a guest running a second operating system and running in a virtualized environment provided by the virtual machine monitor; wherein the content of the first and second substances,
the virtual machine monitor is configured to pass through a touch device to the client such that the client can receive touch operations with respect to the touch device.
2. The in-vehicle machine system of claim 1, wherein the virtual machine monitor is configured to pass through register data in the touch device, interrupt events to the client.
3. The in-vehicle machine system according to claim 2, wherein the client comprises a first touch device driver configured to read the register data according to the interrupt event to form touch information on the touch operation, and the touch information comprises the number of touch points and coordinates thereof.
4. The in-vehicle machine system according to claim 3, wherein the system further comprises a communication channel established between the host machine and the client machine through the virtual machine monitor, and the client machine is capable of sending the touch information to the host machine via the communication channel, so that the host machine can receive the touch operation on the touch device.
5. The in-vehicle machine system of claim 4, wherein the communication channel is built based on virtual memory devices provided by the virtual machine monitor.
6. The in-vehicle machine system according to claim 4, wherein the host machine comprises a second touch device driver configured to receive the touch information and to pass to a touch application of the host machine.
7. A method of sharing a touch device between a plurality of operating systems of a car machine system, wherein the car machine system includes a host running a first operating system and a client running a second operating system, and the method comprises:
providing, by a host, a virtual machine monitor, and the guest running in a virtualization environment provided by the virtual machine monitor; and
transparently transmitting a touch device to the client via the virtual machine monitor such that the client can receive touch operations with respect to the touch device.
8. The method of claim 7, wherein passthrough a touch device to the client via the virtual machine monitor comprises: and transmitting register data and interrupt events in the touch equipment to the client.
9. The method of claim 8, wherein the client comprises a first touch device driver, and wherein passthrough a touch device to the client via the virtual machine monitor comprises: reading, by the first touch device driver, the register data according to the interrupt event to form touch information about the touch operation, and the touch information includes the number of touch points and coordinates thereof.
10. The method of claim 9, wherein the in-vehicle system further comprises a communication channel established between the host and the client through the virtual machine monitor, and the method further comprises: sending the touch information to the host machine via the communication channel so that the host machine can receive the touch operation related to the touch device.
11. The method of claim 10, wherein the communication channel is constructed based on a virtual memory device provided by the virtual machine monitor.
12. The method of claim 10, wherein the host includes a second touch device driver, and the method further comprises: and receiving the touch information through the second touch device driver and transmitting the touch information to the touch application of the host machine.
13. A vehicle, characterized in that the vehicle comprises a vehicle machine system according to any one of claims 1-6.
14. A computer-readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform the method of any one of claims 7-12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310085915.6A CN115793949B (en) | 2023-02-09 | 2023-02-09 | Vehicle-mounted system, method for sharing touch device, vehicle and storage medium |
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| CN202310085915.6A CN115793949B (en) | 2023-02-09 | 2023-02-09 | Vehicle-mounted system, method for sharing touch device, vehicle and storage medium |
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