CN112328360A - Dual-system touch sharing method and device - Google Patents
Dual-system touch sharing method and device Download PDFInfo
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- CN112328360A CN112328360A CN202011189038.XA CN202011189038A CN112328360A CN 112328360 A CN112328360 A CN 112328360A CN 202011189038 A CN202011189038 A CN 202011189038A CN 112328360 A CN112328360 A CN 112328360A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
- G06F9/452—Remote windowing, e.g. X-Window System, desktop virtualisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/4557—Distribution of virtual machine instances; Migration and load balancing
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a dual-system touch sharing method and a device, wherein the method comprises the following steps: step 1, initializing the touch screen by a host machine; step 2, the host machine creates a memory space shared by double system touch; step 3, the virtual machine starts a client, and the client starts a virtual touch drive; step 4, the host machine determines the touch coordinates of the touch points; step 5, the host machine judges whether the client machine is started or not, if yes, the next step is carried out, and if not, a touch event is executed; step 6, the host machine sends the touch coordinate to a shared memory; step 7, the client receives the reading notification issued by the host machine and reads the touch coordinate from the shared memory; and 8, the client executes the touch event. The invention realizes that both the host machine and the client machine can use the touch screen.
Description
Technical Field
The invention relates to the technical field of virtual machines, in particular to a dual-system touch sharing method and device.
Background
In the current dual-system scheme based on virtual machines, the QNX system is usually used as a host machine due to its small kernel, fast start speed, good real-time performance and high stability, while the android system is usually used as a client machine due to its slow start speed, but rich expandability and massive application programs. The android system is the most frequently used operating system by the user, so in existing designs, a touch screen is assigned to the android system. However, in the prior art, at the whole system starting stage (at this time, the android system is not started yet), if the back-up image or the panoramic system is started, the touch function cannot be used, and the user experience is poor.
Disclosure of Invention
The invention provides a dual-system touch sharing method and device, aiming at overcoming the defects in the prior art and realizing that both a host machine and a client machine can use a touch screen.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
one aspect of the present invention provides a dual-system touch sharing method, including:
step 1, initializing a touch screen by a host machine;
step 2, the host machine creates a memory space shared by double system touch;
step 3, the virtual machine starts a client, and the client starts a virtual touch drive;
step 4, the host machine determines the touch coordinates of the touch points;
step 5, the host machine judges whether the client machine is started or not, if yes, the next step is carried out, and if not, a touch event is executed;
step 6, the host machine sends the touch coordinate to a shared memory;
step 7, the client receives the reading notification issued by the host machine and reads the touch coordinate from the shared memory;
and 8, the client executes the touch event.
Further, after the step 5, the method further comprises the following steps:
and 5A, the host machine acquires the number of the processor cores, judges whether the shared data is larger than a preset value or not, if so, the next step is carried out, otherwise, the touch coordinate is sent to the client machine in an inter-core interrupt mode, and the step 8 is carried out.
Specifically, the preset value n ═ a × c, where a denotes a preset byte size and c denotes the number of processor cores.
Specifically, the step 4 includes:
step 401, scanning the electrodes of the touch screen one by one;
step 402, recording electrodes with changed signals, and determining an initial touch point;
step 403, performing window expansion on the initial touch points to obtain expansion windows of a preset number;
step 404, collecting a mutual capacitance image of the extended window;
and 405, determining touch coordinates of the touch points by performing a pixel interpolation algorithm on the mutual capacitance image.
Specifically, the performing of the touch event includes:
step A1, receiving touch coordinates of a touch point;
and A2, calculating display screen coordinates corresponding to the touch coordinates.
Specifically, the abscissa X of the display screen is K11X 0-K2Y0+ K31, the ordinate Y of the display screen is K12Y 0+ K2Y0+ K32, where X, Y represents the abscissa and ordinate of the display screen coordinate corresponding to the touch point, the scaling coefficients of the touch points K11 and K12 represent the assembly angle offset between the touch screen and the display screen, and K31 and K32 represent the offset of the touch points.
Another aspect of the present invention provides a dual system touch sharing apparatus, including:
the dual system comprises a touch screen, a host machine, a virtual machine and a client running on the virtual machine, and further comprises: the shared memory module is arranged in a shared memory creating module, a touch screen initializing module, a touch coordinate determining module, a touch coordinate sending module, a core acquiring module and an inter-core communication module in the host machine, and the touch coordinate reading module and the virtual touch program module are arranged in the client machine;
the touch screen initialization module and the touch coordinate determination module are connected with the touch screen, the touch coordinate sending module is connected with the touch coordinate determination module, the shared memory module and the inter-core communication module, the inter-core communication module is connected with the core acquisition module and the touch coordinate reading module, the touch coordinate reading module is further connected with the shared memory module and the virtual touch program module, and the shared memory module is further connected with the shared memory creation module;
the shared memory creating module is used for creating a memory space shared by the touch of the dual systems;
the shared memory module is used for transmitting touch data;
the touch screen initialization module is used for initializing the touch screen by a host machine;
the touch coordinate determination module is used for determining the touch coordinate of the touch point;
the touch coordinate sending module is used for sending the touch coordinate to the client;
the core obtaining module is used for obtaining the number of the processor cores;
the inter-core communication module is used for performing inter-core communication between the host machine and the client machine;
the touch coordinate reading module is used for reading the touch coordinate from the shared memory;
and the virtual touch program module is used for the client to execute the touch event.
Specifically, the touch coordinate determination module includes: the touch screen comprises an electrode scanning unit, an initial touch point determining unit, a window expanding unit, a mutual capacitance collecting unit, an interpolation unit and a touch coordinate determining unit which are sequentially connected;
the electrode scanning unit is used for scanning the electrodes of the touch screen one by one;
the initial touch point determining unit is used for recording the electrodes with changed signals and determining initial touch points;
the window expansion unit is used for carrying out window expansion on the initial touch point;
the mutual capacitance acquisition unit is used for acquiring a mutual capacitance image of the extended window;
and the touch coordinate determination unit is used for carrying out interpolation operation on the mutual capacitance image to determine the touch coordinate of the touch point.
Specifically, the virtual touch program module includes: the device comprises a display screen coordinate calculation unit, and a touch coordinate receiving unit, a zoom coefficient unit, an angle offset unit and an offset unit which are connected with the display screen coordinate calculation unit;
the touch coordinate receiving unit is used for receiving touch coordinates of touch points;
the scaling coefficient unit is used for acquiring the scaling coefficient of the touch point;
the angle deviation unit is used for acquiring the assembly angle deviation between the touch screen and the display screen;
the offset unit is used for acquiring the offset of the touch point;
and the display screen coordinate calculation unit is used for calculating to obtain the display screen coordinate corresponding to the touch point according to the touch coordinate, the zoom coefficient, the assembly angle offset and the offset of the touch point.
Specifically, the display screen coordinate calculation unit determines the display screen coordinates according to the following formula:
the display screen abscissa X is K11X 0-K2Y0+ K31, the display screen ordinate Y is K12Y 0+ K2Y0+ K32, wherein X, Y represents the abscissa and ordinate of the display screen coordinate corresponding to the touch point, the scaling coefficients of the touch points K11 and K12 represent the assembly angle offset between the touch screen and the display screen, and K31 and K32 represent the offset of the touch points.
The invention has the beneficial effects that: the touch screen is initialized by the host machine, the shared memory space is created, the touch coordinate of the touch point is determined, if the client machine is started, the touch coordinate is sent to the execution touch event, otherwise, the host machine executes the touch event by itself, and the purpose that the host machine and the client machine can use the touch screen is achieved.
Drawings
FIG. 1 is a flow chart diagram of a dual system touch sharing method of the present invention;
FIG. 2 is a schematic structural diagram of a dual-system touch sharing device according to the present invention;
FIG. 3 is a schematic diagram of the touch coordinate determination module of the present invention;
FIG. 4 is a schematic diagram of a virtual touch program module according to the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustrative purposes only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment provides a touch sharing method based on dual systems, including:
step 1, initializing the touch screen by the host machine.
In this embodiment, the step 1 includes:
step 101, configuring a hardware port of a touch screen to a host machine;
102, a host machine loads a bus driver of a hardware port of the touch screen;
and 103, the virtual layer distributes the hardware bus of the touch screen to a host machine.
Step 104, loading a drive of a touch chip of the touch screen;
and step 105, registering the touch screen as an input device.
In this embodiment, the hardware port is an I2C port, and the host is a QNX system.
And 2, the host machine creates a memory space shared by the double system touch.
In this embodiment, the step 2 includes:
step 201, a host machine creates a communication pipeline and names the communication pipeline;
step 202, the host machine applies for sharing the memory;
step 203, the host associates the shared memory and the communication pipeline to a shared memory interval.
And 3, starting the client by the virtual machine, and starting the virtual touch drive by the client.
In this embodiment, the client starting the virtual touch driver includes:
step 301, the client registers the virtual touch driver as an input device driver;
step 302, the virtual machine creates a communication pipeline connection for connecting the shared memory interval declared by the touch screen driver of the client and the host.
And 4, determining the touch coordinate of the touch point by the host machine.
And 5, the host machine judges whether the client machine is started or not, if so, the next step is carried out, and if not, the touch event is executed.
And step 6, the host machine sends the touch coordinate to a shared memory.
In specific implementation, after the host touch driver determines the touch coordinate, the touch coordinate data is written into the corresponding shared memory, and a read notification is issued through a message pipeline.
And 7, the client receives the reading notification issued by the host machine and reads the touch coordinate from the shared memory.
And 8, the client executes the touch event.
Example 2
Unlike embodiment 1, the method further includes, after the step 5:
and 5A, the host machine obtains the number c of the processor cores, judges whether the shared data is greater than a preset value n, if so, the next step is carried out, otherwise, the touch coordinate is sent to the client machine in an inter-core interrupt mode, and the step 8 is carried out.
In this embodiment, the shared data is all shared data including the touch coordinates.
In this embodiment, the preset value n ═ a × c, where a denotes a preset byte size and c denotes the number of processor cores.
Example 3
In this embodiment, a method for determining a touch coordinate of a touch point by a host in step 4 in embodiment 1 is provided, where the method includes:
step 401, scanning the electrodes of the touch screen one by one;
step 402, recording electrodes Px and Py with changed signals, and determining an initial touch point;
step 403, performing window expansion on the initial touch points to obtain expansion windows of a preset number;
in this embodiment, the number of the extended windows is 4, and the extended windows are distributed with the initial touch point as a center.
Step 404, collecting a mutual capacitance image of the extended window;
and step 405, determining touch coordinates X0 and Y0 of the touch point by performing a pixel interpolation algorithm on the mutual capacitance image.
Example 3
In this embodiment, a method for performing a touch event as described in embodiment 1 is provided, including:
a1, receiving touch coordinates X0 and Y0 of a touch point;
and A2, calculating display screen coordinates X, Y corresponding to the touch coordinates.
Generally, a touch screen is a touch receiving component superimposed on a display screen, touch points on the touch screen do not ultimately reflect touch coordinate points on the display screen, and an application program ultimately needs to know touch coordinates on the display screen (user interface), so the display screen coordinates of the embodiment refer to touch coordinates on the user interface adapted to the display screen.
In this embodiment, the abscissa X of the display screen is K11 × X0-K2Y0+ K31, the ordinate Y of the display screen is K12 × Y0+ K2Y0+ K32, where X, Y represents the abscissa and ordinate of the display screen coordinate corresponding to the touch point, the scaling coefficients of the touch points K11 and K12 represent the assembly angle offset between the touch screen and the display screen K2 represents the offset of the touch points K31 and K32 represent the offset of the touch points.
Example 4
As shown in fig. 2, this embodiment provides a touch sharing system based on dual systems, where the dual systems include a touch screen, a host, a virtual machine, and a client running on the virtual machine, and further includes: the shared memory module is arranged in a shared memory creating module, a touch screen initializing module, a touch coordinate determining module, a touch coordinate sending module, a core acquiring module and an inter-core communication module in the host machine, and the touch coordinate reading module and the virtual touch program module are arranged in the client machine;
the touch screen initialization module and the touch coordinate determination module are connected with the touch screen, the touch coordinate sending module is connected with the touch coordinate determination module, the shared memory module and the inter-core communication module, the inter-core communication module is connected with the core acquisition module and the touch coordinate reading module, the touch coordinate reading module is further connected with the shared memory module and the virtual touch program module, and the shared memory module is further connected with the shared memory creation module;
the shared memory creating module is used for creating a memory space shared by the touch of the dual systems;
the shared memory module is used for transmitting touch data;
the touch screen initialization module is used for initializing the touch screen by a host machine;
the touch coordinate determination module is used for determining the touch coordinate of the touch point;
the touch coordinate sending module is used for sending the touch coordinate to the client;
the core obtaining module is used for obtaining the number of the processor cores;
the inter-core communication module is used for performing inter-core communication between the host machine and the client machine;
the touch coordinate reading module is used for reading the touch coordinate from the shared memory;
and the virtual touch program module is used for the client to execute the touch event.
The working process of the touch sharing system based on the dual system in this embodiment is as shown in embodiment 1, and is not described again.
Example 5
As shown in fig. 3, this embodiment provides a structure of the touch coordinate determination module in embodiment 4, including: the touch screen comprises an electrode scanning unit, an initial touch point determining unit, a window expanding unit, a mutual capacitance collecting unit, an interpolation unit and a touch coordinate determining unit which are sequentially connected;
the electrode scanning unit is used for scanning the electrodes of the touch screen one by one;
the initial touch point determining unit is used for recording the electrodes with changed signals and determining initial touch points;
the window expansion unit is used for carrying out window expansion on the initial touch point;
the mutual capacitance acquisition unit is used for acquiring a mutual capacitance image of the extended window;
and the touch coordinate determination unit is used for carrying out interpolation operation on the mutual capacitance image to determine the touch coordinate of the touch point.
The working process of the touch coordinate determination module of this embodiment is as shown in embodiment 2, and is not described again.
Example 6
As shown in fig. 4, this embodiment provides a structure of the virtual touch program module in embodiment 4, including: the device comprises a display screen coordinate calculation unit, and a touch coordinate receiving unit, a zoom coefficient unit, an angle offset unit and an offset unit which are connected with the display screen coordinate calculation unit;
the touch coordinate receiving unit is used for receiving touch coordinates of touch points;
the scaling coefficient unit is used for acquiring the scaling coefficient of the touch point;
the angle deviation unit is used for acquiring the assembly angle deviation between the touch screen and the display screen;
the offset unit is used for acquiring the offset of the touch point;
and the display screen coordinate calculation unit is used for calculating to obtain the display screen coordinate corresponding to the touch point according to the touch coordinate, the zoom coefficient, the assembly angle offset and the offset of the touch point.
The working process of the virtual touch program module in this embodiment is as shown in embodiment 3, and is not described again.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (10)
1. A dual system touch sharing method, comprising:
step 1, initializing a touch screen by a host machine;
step 2, the host machine creates a memory space shared by double system touch;
step 3, the virtual machine starts a client, and the client starts a virtual touch drive;
step 4, the host machine determines the touch coordinates of the touch points;
step 5, the host machine judges whether the client machine is started or not, if yes, the next step is carried out, and if not, a touch event is executed;
step 6, the host machine sends the touch coordinate to a shared memory;
step 7, the client receives the reading notification issued by the host machine and reads the touch coordinate from the shared memory;
and 8, the client executes the touch event.
2. The dual system touch sharing method according to claim 1, further comprising, after the step 5:
and 5A, the host machine acquires the number of the processor cores, judges whether the shared data is larger than a preset value or not, if so, the next step is carried out, otherwise, the touch coordinate is sent to the client machine in an inter-core interrupt mode, and the step 8 is carried out.
3. The dual system touch sharing method according to claim 2, wherein the preset value n ═ a × c, where a represents a preset byte size and c represents the number of processor cores.
4. The dual system touch sharing method according to claim 1, wherein the step 4 comprises:
step 401, scanning the electrodes of the touch screen one by one;
step 402, recording electrodes with changed signals, and determining an initial touch point;
step 403, performing window expansion on the initial touch points to obtain expansion windows of a preset number;
step 404, collecting a mutual capacitance image of the extended window;
and 405, determining touch coordinates of the touch points by performing a pixel interpolation algorithm on the mutual capacitance image.
5. The dual system touch sharing method of claim 4, wherein the performing a touch event comprises:
step A1, receiving touch coordinates of a touch point;
and A2, calculating display screen coordinates corresponding to the touch coordinates.
6. The dual system touch sharing method according to claim 5, wherein the abscissa X of the display screen is K11X 0-K2Y0+ K31, and the ordinate Y of the display screen is K12Y 0+ K2Y0+ K32, wherein X, Y represents the abscissa and ordinate of the display screen coordinate corresponding to the touch point, the scaling coefficients of the touch points K11 and K12, the representation K2 represents the assembly angle offset between the touch screen and the display screen, and the representations K31 and K32 represent the offset of the touch point.
7. A dual-system touch sharing device, the dual system including a touch screen, a host, a virtual machine, and a client running on the virtual machine, the device comprising: the shared memory module is arranged in a shared memory creating module, a touch screen initializing module, a touch coordinate determining module, a touch coordinate sending module, a core acquiring module and an inter-core communication module in the host machine, and the touch coordinate reading module and the virtual touch program module are arranged in the client machine;
the touch screen initialization module and the touch coordinate determination module are connected with the touch screen, the touch coordinate sending module is connected with the touch coordinate determination module, the shared memory module and the inter-core communication module, the inter-core communication module is connected with the core acquisition module and the touch coordinate reading module, the touch coordinate reading module is further connected with the shared memory module and the virtual touch program module, and the shared memory module is further connected with the shared memory creation module;
the shared memory creating module is used for creating a memory space shared by the touch of the dual systems;
the shared memory module is used for transmitting touch data;
the touch screen initialization module is used for initializing the touch screen by a host machine;
the touch coordinate determination module is used for determining the touch coordinate of the touch point;
the touch coordinate sending module is used for sending the touch coordinate to the client;
the core obtaining module is used for obtaining the number of the processor cores;
the inter-core communication module is used for performing inter-core communication between the host machine and the client machine;
the touch coordinate reading module is used for reading the touch coordinate from the shared memory;
and the virtual touch program module is used for the client to execute the touch event.
8. The dual system touch sharing device according to claim 7, wherein the touch coordinate determination module comprises: the touch screen comprises an electrode scanning unit, an initial touch point determining unit, a window expanding unit, a mutual capacitance collecting unit, an interpolation unit and a touch coordinate determining unit which are sequentially connected;
the electrode scanning unit is used for scanning the electrodes of the touch screen one by one;
the initial touch point determining unit is used for recording the electrodes with changed signals and determining initial touch points;
the window expansion unit is used for carrying out window expansion on the initial touch point;
the mutual capacitance acquisition unit is used for acquiring a mutual capacitance image of the extended window;
and the touch coordinate determination unit is used for carrying out interpolation operation on the mutual capacitance image to determine the touch coordinate of the touch point.
9. The dual system touch sharing device according to claim 7, wherein the virtual touch program module comprises: the device comprises a display screen coordinate calculation unit, and a touch coordinate receiving unit, a zoom coefficient unit, an angle offset unit and an offset unit which are connected with the display screen coordinate calculation unit;
the touch coordinate receiving unit is used for receiving touch coordinates of touch points;
the scaling coefficient unit is used for acquiring the scaling coefficient of the touch point;
the angle deviation unit is used for acquiring the assembly angle deviation between the touch screen and the display screen;
the offset unit is used for acquiring the offset of the touch point;
and the display screen coordinate calculation unit is used for calculating to obtain the display screen coordinate corresponding to the touch point according to the touch coordinate, the zoom coefficient, the assembly angle offset and the offset of the touch point.
10. The dual-system touch sharing device according to claim 7, wherein the display screen coordinate calculation unit determines the display screen coordinates according to the following formula:
the display screen abscissa X is K11X 0-K2Y0+ K31, the display screen ordinate Y is K12Y 0+ K2Y0+ K32, wherein X, Y represents the abscissa and ordinate of the display screen coordinate corresponding to the touch point, the scaling coefficients of the touch points K11 and K12 represent the assembly angle offset between the touch screen and the display screen, and K31 and K32 represent the offset of the touch points.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113518106A (en) * | 2021-04-06 | 2021-10-19 | 惠州市德赛西威智能交通技术研究院有限公司 | Virtual machine interaction system and method based on SOME/IP protocol |
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| CN102169390A (en) * | 2011-04-29 | 2011-08-31 | 深圳市大富科技股份有限公司 | Information terminal and touch control method thereof |
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|---|---|---|---|---|
| CN102169390A (en) * | 2011-04-29 | 2011-08-31 | 深圳市大富科技股份有限公司 | Information terminal and touch control method thereof |
| CN103064734A (en) * | 2011-10-24 | 2013-04-24 | 联想(北京)有限公司 | Terminal equipment and multi-system input switching method |
| CN106874128A (en) * | 2017-01-22 | 2017-06-20 | 广州华多网络科技有限公司 | Data transmission method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113518106A (en) * | 2021-04-06 | 2021-10-19 | 惠州市德赛西威智能交通技术研究院有限公司 | Virtual machine interaction system and method based on SOME/IP protocol |
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