CN105282510A - Method and device for starting reverse image - Google Patents
Method and device for starting reverse image Download PDFInfo
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- CN105282510A CN105282510A CN201510685825.6A CN201510685825A CN105282510A CN 105282510 A CN105282510 A CN 105282510A CN 201510685825 A CN201510685825 A CN 201510685825A CN 105282510 A CN105282510 A CN 105282510A
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Abstract
The embodiment of the invention discloses a method and a device for starting a reverse image. The method comprises the following steps: when a system startup instruction is monitored, executing a system startup operation, and instructing a bottom driver of a rear view camera to be started in order to detect a reverse gear signal; when the bottom driver of the rear view camera detects the reverse gear signal, outputting image data acquired by the rear view camera to display equipment to display the image data, and instructing a reverse application to be started; and when the reverse application is started, controlling the rear view camera through the reverse application, and overlapping a reverse image interface and the image data acquired by the rear view camera to the display equipment to display the overlapped reverse image interface and image data. Through the technical scheme provided by the embodiment of the invention, the reverse image can be started rapidly and displayed, so that a user can view a rear situation of a vehicle within a short time, and the reversing experience of the user is improved.
Description
Technical field
The embodiment of the present invention relates to reverse image technical field, particularly relates to a kind of method and apparatus starting reverse image.
Background technology
Reverse image also known as parking assisting system, or claims reversing visible system.Reverse image in onboard system is the function that user pays special attention to, and when reverse gear shift hung by vehicle, reverse image system can connect the high definition backup camera being positioned at the tailstock automatically, situation after car is shown in clearly in reversing LCDs.
Reverse image function opening process in the market in onboard system is as follows: system boot, and the main interface of the system that enters into, when reverse range signal having been detected, application program controlling opens backup camera, and image is shown to user.This process toggle speed is slow, and user sees that from starting shooting to the time of image is very long, and general tens seconds, Consumer's Experience was poor.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus starting reverse image, to start reverse image fast.
On the one hand, embodiments provide a kind of method starting reverse image, comprise;
When monitoring system boot instruction, executive system power-on operation, and indicate backup camera bottom layer driving to start to detect the signal that reverses gear;
When backup camera bottom layer driving detect reverse gear signal time, export the view data that described backup camera gathers to display device and show, and notice reversing application program launching;
When startup completes described reversing application program, by backup camera described in described reversing application program controlling, the view data of reverse image interface and backup camera collection is superimposed to display device and shows.
On the other hand, the embodiment of the present invention additionally provides a kind of device starting reverse image, comprising:
Reverse gear detecting signal unit, for when monitoring system boot instruction, and executive system power-on operation, and indicate backup camera bottom layer driving to start to detect the signal that reverses gear;
Photographed images display unit, when reversing gear signal for detecting when backup camera bottom layer driving, exporting the view data that described backup camera gathers to display device and showing, and notice reversing application program launching;
Imaging importing display unit, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling, is superimposed to display device by the view data of reverse image interface and backup camera collection and shows.
The technical scheme that the embodiment of the present invention provides, when system boot starts, export the view data of backup camera collection to display device after backup camera bottom layer driving detects the signal that reverses gear to show, before system has started, reverse image can be shown, toggle speed is fast, user can after the very first time sees car situation.After startup completes reversing application program, the control of reversing application program adapter backup camera, the view data of reverse image interface and backup camera collection is superimposed to display device show, by the relevant reversing guidance information that display device shows, user can move backward easily.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet starting the method for reverse image that the embodiment of the present invention one provides;
Fig. 2 is a kind of schematic flow sheet starting the method for reverse image that the embodiment of the present invention two provides;
Fig. 3 is a kind of flow chart starting the method for reverse image that the embodiment of the present invention three provides;
Fig. 4 is a kind of structural representation starting the device of reverse image that the embodiment of the present invention four provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, hereinafter with reference to the accompanying drawing in the embodiment of the present invention, by execution mode, technical scheme of the present invention is described clearly and completely, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
Fig. 1 is a kind of schematic flow sheet starting reverse image that the embodiment of the present invention one provides.The method can be performed by the reverse image device be configured in vehicle, and described device by software and/or hardware implementing, generally can be configured in the onboard control device of vehicle, as a part for vehicle control syetem.As shown in Figure 1, the method for startup reverse image that the present embodiment provides specifically comprises the steps:
S110, when monitoring system boot instruction, executive system power-on operation, and indicate backup camera bottom layer driving to start to reverse gear signal to detect;
For vehicle control syetem, it interacts with the bottom layer driving software of each executive component usually, can call and control its work.Executive component is such as backup camera etc.
User in actual applications, is probably first need to carry out moveing backward out parking stall, then there will be vehicle ignition, after system boot, hang reverse gear immediately or simultaneously, then occurred that reversing application program has not yet started, namely needed the situation of reverse image.Then during vehicle control syetem start, General System kernel can first start, and can load backup camera bottom layer driving when kernel starts, and is detected the signal that reverses gear of vehicle by backup camera bottom layer driving.
S120, when backup camera bottom layer driving detect reverse gear signal time, export the view data that described backup camera gathers to display device and show, and notice reversing application program launching;
When backup camera bottom layer driving detect reverse gear signal time, illustrate that vehicle has now hung up to reverse gear, need to move backward, backup camera bottom layer driving can control to open backup camera, exports the view data of backup camera collection to display device and shows.Specifically the data of backup camera collection carried out changing and decoding, decoded data sent in the buffer memory of display device, then display device carries out decoding display.In addition, backup camera bottom layer driving is also sent to reversing application program by the state of a control of backup camera, notifies reversing application program launching and the control of adapter backup camera.
S130, when startup completes described reversing application program, by backup camera described in described reversing application program controlling, the view data of reverse image interface and backup camera collection is superimposed to display device and shows.
Reversing application program is as upper level applications, be generally after vehicle control syetem has started, start reversing application program, reversing application program is used for controlling backup camera on the one hand and exports the view data of collection to display device, on the other hand according to position and the state of vehicle, generate the image informations such as reversing guide line, export the information such as reversing guide line to display device.Therefore, reversing application program is after startup completes, and the control of adapter backup camera, is superimposed to display device by the view data of reverse image interface and backup camera collection and shows.
Further, when system boot has started, notify that described backup camera bottom layer driving stops detection reversing gear signal, switched to system kernel and detect described reverse range signal;
When described system kernel detects described reverse range signal, notify described reversing application program launching;
When startup completes described reversing application program, by backup camera described in described reversing application program controlling, generate reverse image interface according to the view data that backup camera gathers, the view data of reverse image interface and backup camera collection is superimposed to display device and shows.
When vehicle control syetem starting up, if the signal that reverses gear do not detected, system starts with regard to normal boot-strap.After system boot has started, control and the execution of program are all complete on the basis of operating system, can detect by system kernel the signal that whether reverses gear, notify that described backup camera bottom layer driving stops detection reversing gear signal, switch to system kernel and detect described reverse range signal.When systems axiol-ogy to reverse gear signal time, directly start reversing application program and perform relevant car backing operation.By reversing application program controlling backup camera, reverse image interface is generated according to the information such as view data, vehicle-state that backup camera gathers, mainly will move backward guide line information displaying in reverse image interface, finally the view data of reverse image interface and backup camera collection is superimposed to display device and shows.
The technical scheme that this enforcement provides, when vehicle control syetem starting up, backup camera bottom layer driving exports the view data of backup camera collection to display device after detecting the signal that reverses gear and shows, before system has started, reverse image can be shown, after need not waiting until that system boot has started, go to show reverse image by application program, toggle speed is fast, user can when start up system, and hanging up reverses gear can see reverse image in general 2 seconds.After startup completes reversing application program, the control of reversing application program adapter backup camera, reverse image interface is generated according to the view data that backup camera gathers, the view data of reverse image interface and backup camera collection is superimposed to display device show, the reversing shown by display device guides relevant information, and user can move backward easily.
Embodiment two
Fig. 2 is a kind of schematic flow sheet starting the method for reverse image that the embodiment of the present invention two provides.The present embodiment is optimized previous embodiment, and as shown in Figure 2, the method for the startup reverse image that the present embodiment provides comprises the steps:
S210, when monitoring system boot instruction, executive system power-on operation, and indicate backup camera bottom layer driving to start to reverse gear signal to detect;
S220, when monitoring system boot instruction, apply for the first video cache interface and the second video cache interface of described display device, described first video cache interface is positioned at the upper strata at described second video cache interface, and to arrange described first video cache interface be transparent interface;
When vehicle control syetem is started shooting, arrange two video cache interfaces, the first video cache interface is mainly used for information such as display guide line etc., and the second cached program is mainly used for showing the image that backup camera gathers.Before system has started, reversing application program does not start, and the function generating guide line is mainly completed by reversing application program controlling, therefore can arrange the first video cache interface is pellucidity, after being provided with, not output image in the first video cache interface.
S230, when backup camera bottom layer driving detect reverse gear signal time, the second video cache interface view data that described backup camera gathers being exported to display device shows.
First video cache interface is positioned at the upper strata at the second video cache interface, be pellucidity owing to arranging the first video cache interface, the view data of camera collection exports the second video cache interface to, the image of camera collection can be shown in the display device, i.e. vehicle rear view image, now, user can move backward according to the vehicle rear view image of display.
S240, when startup completes described reversing application program, by backup camera described in described reversing application program controlling; Generated the guide line at reverse image interface by described reversing application program, and export in the first transparent video cache interface, the view data gathered with described backup camera is superimposed to display device and shows.
After reversing application program launching, guide line can be generated according to information such as vehicle parameter and steering wheel torsional directions, reversing guide line is generally on the graphic interface of backup camera, therefore the guide line at the reverse image interface of generation can be exported in the first transparent video cache interface, the view data of backup camera collection is exported to the second video cache interface, the view data of guide line information and backup camera collection is superimposed to display device display, part in first video cache interface except guide line is Transparence Display, the image now shown in display device is the image that guide line is superimposed upon on vehicle rear view image, make user move backward time can according to aid in guide line, move backward more accurately.
S250, when described reversing application program detect reverse gear signal at stop time, described first video cache interface is updated to user interface, and to arrange described second video cache interface be pellucidity, and close backup camera.
Move backward application software initiated after, a series of functions about reversing have all been controlled by reversing application software, when detect reverse gear signal at stop time, illustrate that now user does not need the associative operation carrying out moveing backward, originally the first cached program being used for showing reversing guide line can be updated to user interface, for for user operation, and to arrange described second video cache interface be pellucidity, closes backup camera.
The technical scheme that the present embodiment provides, when monitoring vehicle control syetem start-up command, first video cache interface of application display device and the second video cache interface, second video cache interface exports the image that backup camera gathers, the guide line at reverse image interface is exported in the first transparent video cache interface, be superimposed to display device with the view data of backup camera collection to show, part in first video cache interface except guide line is Transparence Display, make driver move backward time can according to the aid in guide line at reverse image interface, move backward more accurately.
Embodiment three
Fig. 3 is a kind of flow chart starting the method for reverse image that the embodiment of the present invention three provides.As shown in Figure 3, the method comprises the steps:
S301, when monitoring start-up command, load and start backup camera bottom layer driving;
S302, application two framebuffer equipment fb0 and fb1, initialization fb0 and fb1;
Wherein, framebuffer drives a video display apparatus with a picture output device from the core buffer comprising complete frame data, and initialized process comprises and arranges fb0 and be positioned at upper strata, and fb1 is positioned at lower floor.
S303, camera bottom layer driving detect the signal that whether reverses gear; When detect reverse gear signal time, then perform S304, otherwise perform S312;
S304, initialization backup camera;
S305, by the view data of camera collection send into fb1, it is transparent for arranging fb0;
S306, to reversing application program send a notification message;
Whether S307, camera bottom layer driving detect and to reverse gear signal, when detect reverse gear signal time, perform S309, otherwise perform S308;
S308, stop by the view data of camera collection send into fb1, fb0 display system starting up interface is set;
After S309, system boot have started, whether systems axiol-ogy reverses gear signal, when detect reverse gear signal time, perform S310, otherwise wait for;
S310, startup reversing application program;
The control of S311, reversing application program adapter backup camera, cancel BSP to the control of backup camera, then redirect performs S316;
BSP is board suppot package, it is the one deck driven in motherboard hardware and operating system between layer program, it is generally acknowledged that it belongs to an operating system part, mainly realize the support to operating system, driver for upper strata provides the function bag of access hardware devices register, enables better to run on hardware mainboard.
S312, arrange fb0 display system starting up interface, fb1 is pellucidity;
After S313, system boot have started, whether systems axiol-ogy reverses gear signal, when detect reverse gear signal time, perform S314, otherwise wait for;
S314, startup reversing application program;
S315, reversing application program controlling backup camera, and initialization backup camera;
S316, send into guide line image information to fb0, the view data gathered by backup camera sends into fb1, controls image that backup camera gathers and guide line Overlapping display;
S317, detect and whether to reverse gear signal, detect when reversing gear signal, perform S316, otherwise perform S318;
S318, fb0 is updated to user interface, fb1 is set to pellucidity, close backup camera.
When carrying out display interface and switching, can make interface that the blank screen of 500ms is set, with the phenomenon preventing the interface of display device from occurring mess code.As when fb0 is updated to user interface, the blank screen that fb0 is 500ms is first set, and then inputs associated display information.
The technical scheme that the present embodiment provides, when user vehicle control syetem start before hang up reverse gear or system start after hang up immediately reverse gear signal reversing time, reverse image can be started fast, user is made to see rear view of vehicle situation in the very first time, after system has started, reversing application software controls the display of relevant reversing image, and user can be moveed backward easily.
Embodiment four
Fig. 4 is a kind of structural representation starting the device of reverse image that the embodiment of the present invention four provides.As shown in Figure 4, this device comprises:
Reverse gear detecting signal unit 410, for when monitoring system boot instruction, and executive system power-on operation, and indicate backup camera bottom layer driving to start to detect the signal that reverses gear;
Photographed images display unit 420, when reversing gear signal for detecting when backup camera bottom layer driving, exporting the view data that described backup camera gathers to display device and showing, and notice reversing application program launching;
Imaging importing display unit 430, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling, is superimposed to display device by the view data of reverse image interface and backup camera collection and shows.
Further, described device, also comprises:
Input of reversing gear switch unit 440, for when system boot has started, has notified that described backup camera bottom layer driving stops detection reversing gear signal, has switched to system kernel and detect described reverse range signal;
Reversing application program launching unit 450, for when described system kernel detects described reverse range signal, notifies described reversing application program launching;
Image procossing and display unit 460, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling, generate reverse image interface according to the view data that backup camera gathers, transfer to display device and show.
Further, described device also comprises:
Cached program application and setting unit 470, for when monitoring system boot instruction, apply for the first video cache interface and the second video cache interface of described display device, described first video cache interface is positioned at the upper strata at described second video cache interface, and to arrange described first video cache interface be transparent interface;
Described photographed images display unit 420 specifically for:
When backup camera bottom layer driving detect reverse gear signal time, the second video cache interface view data that described backup camera gathers being exported to display device shows.
Further, described imaging importing display unit 430 comprises:
Backup camera controls subelement 431, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling;
Imaging importing display subelement 432, for being generated the guide line at reverse image interface by described reversing application program, and export in the first transparent video cache interface, the view data gathered with described backup camera is superimposed to display device and shows.
Further, described device also comprises:
Interface upgrades and processing unit 480, for by after backup camera described in described reversing application program controlling, when described reversing application program detect reverse gear signal at stop time, described first video cache interface is updated to user interface, and to arrange described second video cache interface be pellucidity, and close backup camera.
Said apparatus can perform the method for the startup reverse image that any embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. start a method for reverse image, it is characterized in that, comprising:
When monitoring system boot instruction, executive system power-on operation, and indicate backup camera bottom layer driving to start to detect the signal that reverses gear;
When backup camera bottom layer driving detect reverse gear signal time, export the view data that described backup camera gathers to display device and show, and notice reversing application program launching;
When startup completes described reversing application program, by backup camera described in described reversing application program controlling, the view data of reverse image interface and backup camera collection is superimposed to display device and shows.
2. method according to claim 1, is characterized in that, also comprises:
When system boot has started, notify that described backup camera bottom layer driving stops detection reversing gear signal, switched to system kernel and detect described reverse range signal;
When described system kernel detects described reverse range signal, notify described reversing application program launching;
When startup completes described reversing application program, by backup camera described in described reversing application program controlling, generate reverse image interface according to the view data that backup camera gathers, transfer to display device and show.
3. method according to claim 1, is characterized in that:
When monitoring system boot instruction, also comprise: the first video cache interface and the second video cache interface of applying for described display device, described first video cache interface is positioned at the upper strata at described second video cache interface, and to arrange described first video cache interface be transparent interface;
Described when backup camera bottom layer driving detect reverse gear signal time, the view data that described backup camera gathers is exported to display device and carries out display and comprise:
When backup camera bottom layer driving detect reverse gear signal time, the second video cache interface view data that described backup camera gathers being exported to display device shows.
4. method according to claim 3, it is characterized in that, when startup completes described reversing application program, by backup camera described in described reversing application program controlling, the view data of reverse image interface and backup camera collection is superimposed to display device show, comprises:
When startup completes described reversing application program, by backup camera described in described reversing application program controlling;
Generated the guide line at reverse image interface by described reversing application program, and export in the first transparent video cache interface, the view data gathered with described backup camera is superimposed to display device and shows.
5. method according to claim 3, is characterized in that, after backup camera described in described reversing application program controlling, also comprises:
When described reversing application program detect reverse gear signal at stop time, described first video cache interface is updated to user interface, and to arrange described second video cache interface be pellucidity, and close backup camera.
6. start a device for reverse image, it is characterized in that, comprising:
Reverse gear detecting signal unit, for when monitoring system boot instruction, and executive system power-on operation, and indicate backup camera bottom layer driving to start to detect the signal that reverses gear;
Photographed images display unit, when reversing gear signal for detecting when backup camera bottom layer driving, exporting the view data that described backup camera gathers to display device and showing, and notice reversing application program launching;
Imaging importing display unit, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling, is superimposed to display device by the view data of reverse image interface and backup camera collection and shows.
7. device according to claim 6, is characterized in that, also comprises:
Input of reversing gear switch unit, for when system boot has started, has notified that described backup camera bottom layer driving stops detection reversing gear signal, has switched to system kernel and detect described reverse range signal;
Reversing application program launching unit, for when described system kernel detects described reverse range signal, notifies described reversing application program launching;
Image procossing and display unit, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling, generate reverse image interface according to the view data that backup camera gathers, transfer to display device and show.
8. device according to claim 6, is characterized in that: also comprise:
Cached program application and setting unit, for when monitoring system boot instruction, apply for the first video cache interface and the second video cache interface of described display device, described first video cache interface is positioned at the upper strata at described second video cache interface, and to arrange described first video cache interface be transparent interface;
Described photographed images display unit specifically for:
When backup camera bottom layer driving detect reverse gear signal time, the second video cache interface view data that described backup camera gathers being exported to display device shows.
9. device according to claim 8, is characterized in that, described imaging importing display unit comprises:
Backup camera controls subelement, during for completing described reversing application program in startup, by backup camera described in described reversing application program controlling;
Imaging importing display subelement, for being generated the guide line at reverse image interface by described reversing application program, and export in the first transparent video cache interface, the view data gathered with described backup camera is superimposed to display device and shows.
10. device according to claim 8, is characterized in that, also comprises:
Interface upgrades and processing unit, for by after backup camera described in described reversing application program controlling, when described reversing application program detect reverse gear signal at stop time, described first video cache interface is updated to user interface, and to arrange described second video cache interface be pellucidity, and close backup camera.
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