CN108357427A - A kind of mobile unit and its back-up video display methods and storage medium - Google Patents
A kind of mobile unit and its back-up video display methods and storage medium Download PDFInfo
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- CN108357427A CN108357427A CN201810001417.8A CN201810001417A CN108357427A CN 108357427 A CN108357427 A CN 108357427A CN 201810001417 A CN201810001417 A CN 201810001417A CN 108357427 A CN108357427 A CN 108357427A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8066—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring rearward traffic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a kind of mobile unit and its back-up video display methods and storage medium, the back-up video display methods of the mobile unit includes：Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；Open backup camera, create separate threads after the back-up video window show back-up video.The present invention passes through dynamic link library, back-up video window is created in system bottom, show backup camera video, and provide window parameter setting and video image adjusting, it is fast to realize the back-up video response under Android system, using more stable, the safety of car steering is improved, user is facilitated.
Description
Technical field
The present invention relates to vehicle technology field more particularly to a kind of mobile unit and its back-up video display methods and deposit
Storage media.
Background technology
With the rapid development of electronic technology and software technology, automobile has become traffic important in people's daily life
Tool, vehicle electronics product either from function, performance or man-machine interface, there is qualitative leap.Currently, Android
The application that system is increasingly popularized in onboard system in the car, can realize back-up video display function.Android
The back-up video of system, which is shown, to be realized by application layer, but since priority is not very to application layer in Android system
Height exists and prohibits to fall possibility by system, or when application program itself is not responding to, often will appear back-up video and do not show or make
The problem of being exited with middle exception, therefore a reliable and stable realization method is urgently provided, to improve Android onboard systems
The safety of back-up video.
Therefore, the existing technology needs to be improved and developed.
Invention content
The technical problem to be solved in the present invention is, for creating back-up video window by application layer in the prior art,
Back-up video is easy to cause not show or the technical issues of window exits extremely, the present invention provides a kind of mobile unit and its fall
Vehicle image display method and storage medium change tradition and create window mode in application layer, and create reversing in system bottom and regard
One individual threads of frequency window and establishment, corresponding interface is called by dynamic link library, realizes that back-up video stablizes display, gram
The problem of back-up video does not show or exits extremely is taken, drive safety is improved, facilitates user.
Technical solution is as follows used by the present invention solves above-mentioned technical problem：
A kind of back-up video display methods of mobile unit, wherein the back-up video display methods of the mobile unit includes：
Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；
Open backup camera, create separate threads after the back-up video window show back-up video.
The back-up video display methods of the mobile unit, wherein connect reversing after the reception user reversing instruction
Video library corresponding interface, creating a back-up video window includes before：
The parameter of the back-up video window is set；The parameter includes window Z axis value, window coordinates and window size.
The back-up video display methods of the mobile unit, wherein connect reversing after the reception user reversing instruction
Video library corresponding interface creates a back-up video window and specifically includes：
User's reversing instruction is received, calls back-up video to open interface, and newly-built one shows view；
Obtain the parameter of the back-up video window；
The display view carries out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter；
Back-up video display interface is called and connected after drawn, shows the back-up video window.
The back-up video display methods of the mobile unit, wherein the unlatching backup camera creates separate threads
Show that back-up video specifically includes in the back-up video window afterwards：
Backup camera is opened, and detects whether the backup camera is connected to, if so, creating a separate threads, the thread
Display for controlling back-up video；
Start the thread, starts to show back-up video in the back-up video window.
The back-up video display methods of the mobile unit, wherein it is described to start the thread, in the back-up video
Window starts to show that back-up video includes later：
After the back-up video is normally shown, suitable back-up video image parameter is adjusted, and preserve.
A kind of mobile unit, including processor, and the memory that is connected to the processor, the memory are stored with
The back-up video of mobile unit shows that program, the back-up video of the mobile unit show that program is used for by processor execution
Realize following steps：
Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；
Open backup camera, create separate threads after the back-up video window show back-up video.
The mobile unit, wherein the back-up video of the mobile unit shows that program is executed also by the processor
For realizing following steps：
User's reversing instruction is received, calls back-up video to open interface, and newly-built one shows view；
Obtain the parameter of the back-up video window；
The display view carries out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter；
Back-up video display interface is called and connected after drawn, shows the back-up video window.
The mobile unit, wherein the back-up video of the mobile unit shows that program is executed also by the processor
For realizing following steps：
Backup camera is opened, and detects whether the backup camera is connected to, if so, creating a separate threads, the thread
Display for controlling back-up video；
Start the thread, starts to show back-up video in the back-up video window.
The mobile unit, wherein the back-up video of the mobile unit shows that program is executed also by the processor
For realizing following steps：
After the back-up video is normally shown, suitable back-up video image parameter is adjusted, and preserve.
A kind of storage medium, wherein the back-up video that the storage medium is stored with mobile unit shows program, the vehicle
The back-up video for carrying equipment shows the back-up video display methods that the mobile unit is realized when program is executed by processor.
The advantageous effect that the present invention realizes：
1. back-up video library is realized by dynamic link library form, convenient for reversing corresponding interface quick calling and maintenance；
2. by dynamic link library, back-up video display window is created in system bottom, is not take up program internal memory, realizes that reversing regards
Frequency response should be fast, and application is more stable；
3. calling reversing corresponding interface by dynamic link library, an individual threads are created so that the thread is preferential in systems
Grade higher, will not occur low memory and be forced closed, and cause back-up video display window to exit extremely or not display problem, carry
For drive safety；
4. by dynamic link library, adjusting of the Application of Interface in back-up video image parameter can be provided automatically and quickly, met
Different user demands.
Description of the drawings
Fig. 1 is the flow chart of the preferred embodiment of the back-up video display methods of mobile unit of the present invention；
Fig. 2 is the flow chart of the specific embodiment of the back-up video display methods of mobile unit of the present invention；
Fig. 3 is the functional schematic block diagram of mobile unit of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
The technical scheme is that being studied based on android system.
Embodiment one
The back-up video display methods of a kind of mobile unit described in present pre-ferred embodiments, as shown in Figure 1, the method packet
It includes：
S100 receives connection back-up video library corresponding interface after user's reversing instruction, creates a back-up video window.
Currently, the back-up video library is realized by static link library, and in embodiments of the present invention, the back-up video
Library is realized by dynamic link library, and the dynamic link library shows that providing several corresponding interfaces is being adjusted for realization back-up video
Used time needs the function library loaded that can realize the fast velocity modulation of window creation, specified function by the form of the dynamic link library
With, and program internal memory is occupied little space, more easy care and update, reduce cost and reduce system load.
Further, the parameter that back-up video window is set, the back-up video window are needed before the step S100
For visualization window, the parameter includes window Z axis value, window coordinates and window size.Wherein, the window Z axis value is
The outwardly extending distance of the tailstock or barrier are with a distance from the tailstock.
Further, automobile is moved backward, and when application layer receives reversing instruction, passes through the back-up video library（It is dynamic
State chained library is realized）It calls back-up video to open interface, connects the back-up video and open interface, and by the reversing of acquisition
Video window parameter is sent to the back-up video and opens interface.After the back-up video opens interface successful connection at this time, newly
A display view is built, that is, is used to show that the back-up video window of back-up video, the display view initial value to be sky.The display
After view creates successfully, according to the back-up video window parameter of reception（Window Z axis value, window coordinates and window size）
The display view is initialized, after the completion of initialization, system windows management service is described according to parameter drafting
Vehicle video window, and be updated.After application layer detects that the back-up video window is drawn successfully, regarded by the reversing
Back-up video display interface is called in frequency library, and is attached, after successful connection, the back-up video window after display drafting
Mouthful.Wherein, the back-up video opens the bottom that interface is located at system architecture；The back-up video window parameter is not arranged, then
Automatically system default value is used.
It is not common in this way, creating back-up video display window in system bottom by the dynamic link library form
Application layer create back-up video display window, thereby realize quick response back-up video window, application is more stable, no
The phenomenon that back-up video window can be caused to lose or cannot normally show video.
I.e. specifically, the step S100 includes the following steps:
S101 receives user's reversing instruction, calls back-up video to open interface, and newly-built one shows view；
S102 obtains the parameter of the back-up video window；
S103, the display view carry out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter by S104；
S105 calls and connects back-up video display interface after drawn, show the back-up video window.
S200, open backup camera, create separate threads after the back-up video window show back-up video.
In embodiments of the present invention, after the back-up video display interface successful connection, backup camera is opened, and examine
It surveys whether the backup camera is connected to, if not having, shows the message notifying of detection backup camera；If so, creating immediately
A thread is built, the thread is used to control the display of back-up video, and the thread is separate threads, is not in the prior art
Directly invoke the display that thread of moving backward in onboard system carries out back-up video.In this way, when occur, system load is overweight or low memory
When, the thread is still within operating status, is not in be forced out of service or be closed by system, for releasing
The phenomenon that putting resource.That is, by creating an individual threads, thread priority level in systems is improved, in this way
It is not easy the phenomenon that back-up video window is exited or do not shown suddenly occur.
Further, after the thread creates successfully, start the thread, connect the back-up video display interface,
Start to show back-up video in the back-up video window.After back-up video is normally shown, it can carry out repeatedly adjusting to move backward regarding
Frequency image parameter makes video effect reach best, and the back-up video image parameter includes brightness, saturation degree, sharpness, coloration
And contrast etc..When adjusting to one group of most suitable back-up video image parameter value, application will automatically save the group
Value.When executing car backing operation again, this group of back-up video image parameter value stored will be obtained automatically, and in this, as regarding
Yupin effect is shown, without manual adjustment parameter again.
I.e. specifically, step S200 includes the following steps：
S201 opens backup camera, and detects whether the backup camera is connected to, if so, a separate threads are created, it is described
Thread is used to control the display of back-up video；
S202 starts the thread, starts to show back-up video in the back-up video window.
In order to be even further appreciated that the present invention, above-mentioned steps S100-S200 is illustrated with a specific embodiment, is such as schemed
Shown in 2.
S11 when automobile is moved backward, triggers astern signal, executes step S12；
S12, the application layer detect the astern signal, call back-up video bank interface, the back-up video bank interface wound
Back-up video window is built, step S13 is executed；
S13 initializes back-up video window parameter, and shows the back-up video window, executes step S14；
S14 opens backup camera, executes step S15；
S15, whether detection backup camera is connected to, if so, step S16 is executed, if it is not, executing step S18；
S16 creates individual threads, and starts the thread, executes step S17；
S17, back-up video normally after display, adjust back-up video image parameter, and preserve setting value, execute step S19；
S18, prompt please detect backup camera；
S19 terminates.
Certainly, one of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method,
It is that can instruct related hardware by computer program（Such as processor, controller etc.）It completes, the program can store
In a computer-readable storage medium, described program may include the flow such as above-mentioned each method embodiment when being executed.
Wherein the storage medium can be memory, magnetic disc, CD etc..
Embodiment two
The present invention also provides a kind of mobile unit, the mobile unit is to be based on android system, as shown in figure 3, the present invention is real
The mobile unit for applying example includes processor 10, and the memory 20 being connect with the processor 10, and the memory 20 stores
There is the back-up video of mobile unit to show that program, the back-up video of the mobile unit show that program is executed by the processor 10
For realizing following steps：
Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；
Open backup camera, create separate threads after the back-up video window show back-up video；As detailed above.
The back-up video of the mobile unit shows that program is additionally operable to realize following steps by the execution of the processor 10：
User's reversing instruction is received, calls back-up video to open interface, and newly-built one shows view；
Obtain the parameter of the back-up video window；
The display view carries out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter；
Back-up video display interface is called and connected after drawn, shows the back-up video window；As detailed above.
The back-up video of the mobile unit shows that program is additionally operable to realize following steps by the execution of the processor 10：
Backup camera is opened, and detects whether the backup camera is connected to, if so, creating a separate threads, the thread
Display for controlling back-up video；
Start the thread, starts to show back-up video in the back-up video window；As detailed above.
The back-up video of the mobile unit shows that program is additionally operable to realize following steps by the execution of the processor 10：
After the back-up video is normally shown, suitable back-up video image parameter is adjusted, and preserve；As detailed above.
The processor 10 can be a central processing unit in some embodiments（Central Processing
Unit, CPU）, microprocessor or other data processing chips, for run the program code stored in the memory 20 or
Data are handled, such as the back-up video display program etc. for executing mobile unit.
Embodiment three
The present invention also provides a kind of storage medium, the back-up video that the storage medium is stored with mobile unit shows program, institute
The back-up video for stating mobile unit shows program when being executed by processor 10 for realizing the back-up video of the mobile unit
Display methods；As detailed above.
In conclusion a kind of mobile unit of present invention offer and its back-up video display methods and storage medium, the vehicle
Carry equipment back-up video display methods include：Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates one
Back-up video window；Open backup camera, create separate threads after the back-up video window show back-up video.This hair
It is bright that backup camera video is shown, and provide window parameter in system bottom establishment back-up video window by dynamic link library
Setting and video image are adjusted, and realizing the back-up video response under Android system, soon, application is more stable, passes through establishment
One individual threads so that the priority higher of program in systems will not occur to be forcibly stopped because of the low memory of system, cause to regard
The phenomenon that frequency window exits suddenly improves the safety of car steering, facilitates user.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of back-up video display methods of mobile unit, which is characterized in that the back-up video display side of the mobile unit
Method includes：
Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；
Open backup camera, create separate threads after the back-up video window show back-up video.
2. the back-up video display methods of mobile unit according to claim 1, which is characterized in that the reception user falls
Connection back-up video library corresponding interface after vehicle instruction, creating a back-up video window includes before：
The parameter of the back-up video window is set；The parameter includes window Z axis value, window coordinates and window size.
3. the back-up video display methods of mobile unit according to claim 2, which is characterized in that the reception user falls
Connection back-up video library corresponding interface after vehicle instruction, creates a back-up video window and specifically includes：
User's reversing instruction is received, calls back-up video to open interface, and newly-built one shows view；
Obtain the parameter of the back-up video window；
The display view carries out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter；
Back-up video display interface is called and connected after drawn, shows the back-up video window.
4. the back-up video display methods of mobile unit according to claim 3, which is characterized in that the unlatching reversing is taken the photograph
As head, specifically included in back-up video window display back-up video after creating separate threads：
Backup camera is opened, and detects whether the backup camera is connected to, if so, creating a separate threads, the thread
Display for controlling back-up video；
Start the thread, starts to show back-up video in the back-up video window.
5. the back-up video display methods of mobile unit according to claim 4, which is characterized in that described to start the line
Journey, the back-up video window start show back-up video after include：
After the back-up video is normally shown, suitable back-up video image parameter is adjusted, and preserve.
6. a kind of mobile unit, which is characterized in that including processor, and the memory that is connected to the processor, it is described to deposit
The back-up video that reservoir is stored with mobile unit shows that program, the back-up video of the mobile unit show program by the processing
Device executes for realizing following steps：
Back-up video library corresponding interface is connected after receiving user's reversing instruction, creates a back-up video window；
Open backup camera, create separate threads after the back-up video window show back-up video.
7. mobile unit according to claim 6, which is characterized in that the back-up video of the mobile unit shows program quilt
The processor execution is additionally operable to realize following steps：
User's reversing instruction is received, calls back-up video to open interface, and newly-built one shows view；
Obtain the parameter of the back-up video window；
The display view carries out initialization data according to the parameter；
After the completion of initialization data, back-up video window is drawn according to the parameter；
Back-up video display interface is called and connected after drawn, shows the back-up video window.
8. mobile unit according to claim 7, which is characterized in that the back-up video of the mobile unit shows program quilt
The processor execution is additionally operable to realize following steps：
Backup camera is opened, and detects whether the backup camera is connected to, if so, creating a separate threads, the thread
Display for controlling back-up video；
Start the thread, starts to show back-up video in the back-up video window.
9. mobile unit according to claim 8, which is characterized in that the back-up video of the mobile unit shows program quilt
The processor execution is additionally operable to realize following steps：
After the back-up video is normally shown, suitable back-up video image parameter is adjusted, and preserve.
10. a kind of storage medium, which is characterized in that the back-up video that the storage medium is stored with mobile unit shows program,
The back-up video of the mobile unit shows that realizing that claim 1-5 any one of them is vehicle-mounted when program is executed by processor sets
Standby back-up video display methods.
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