CN109218685B - Video signal output method and device - Google Patents
Video signal output method and device Download PDFInfo
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- CN109218685B CN109218685B CN201811382125.XA CN201811382125A CN109218685B CN 109218685 B CN109218685 B CN 109218685B CN 201811382125 A CN201811382125 A CN 201811382125A CN 109218685 B CN109218685 B CN 109218685B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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Abstract
The invention provides a video signal output method and a video signal output device, which are used for displaying a video signal acquired by an unmanned aerial vehicle, and comprise the following steps: acquiring an analog video signal sent by an unmanned aerial vehicle; outputting a first video picture corresponding to the analog video signal, and detecting whether a communication signal between a control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable; if the communication signal between the unmanned aerial vehicle and the service equipment is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment; and switching the currently output first video picture into a second video picture corresponding to the digital video signal. The video signal output method and the video signal output device provided by the invention can continuously acquire and output the real-time video signal acquired by the unmanned aerial vehicle, so that the flight condition of the unmanned aerial vehicle is monitored in real time, and the personal and property safety is further ensured.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a video signal output method and device.
Background
When unmanned aerial vehicle flies, the unmanned aerial vehicle ground control station needs to acquire the real-time video picture that the camera that sets up on this unmanned aerial vehicle in-process of flying of unmanned aerial vehicle acquireed in real time, and this real-time video picture can feed back the current environmental position condition that locates of this unmanned aerial vehicle in real time, accurately, and it has important meaning to fly or successfully accomplish the task to unmanned aerial vehicle safety. The unmanned aerial vehicle controller can finish aerial photography and other operation tasks by observing the video pictures returned by the unmanned aerial vehicle in real time, and can also detect out the real-time position of the unmanned aerial vehicle to ensure the safety of the unmanned aerial vehicle. However, in practice, when the unmanned aerial vehicle uses the wireless communication mode to carry out the video signal transmission layer, because wireless signal easily receives the interference, in case the real-time video signal that unmanned aerial vehicle that the bottom surface control station can't acquire beyond visual range flight obtained, can't monitor unmanned aerial vehicle's the flight condition, can't guarantee personal and property safety.
Disclosure of Invention
In view of the above problems, the present invention provides a video signal output method and apparatus, which can continuously obtain and output a real-time video signal acquired by an unmanned aerial vehicle, so as to monitor the flight condition of the unmanned aerial vehicle in real time, and further ensure personal and property safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first aspect of the present invention discloses a video signal output method for displaying a video signal acquired by an unmanned aerial vehicle, including:
acquiring an analog video signal sent by an unmanned aerial vehicle, and outputting a first video picture corresponding to the analog video signal;
detecting whether a communication signal between a control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable;
if the communication signal between the control equipment and the unmanned aerial vehicle is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from service equipment in communication connection with the control equipment;
and switching the currently output first video picture into a second video picture corresponding to the digital video signal.
As an optional implementation manner, the analog video signal includes an analog signal corresponding to a real-time video signal acquired by the unmanned aerial vehicle through a camera provided on the unmanned aerial vehicle;
the digital video signal comprises a digital signal corresponding to the real-time video signal;
the video content of the digital video signal is the same as the video content of the analog video signal.
As an optional implementation, after outputting the digital video signal, the method further comprises:
detecting whether a communication signal between the control equipment and the unmanned aerial vehicle is stable again;
and if the communication signal between the control equipment and the unmanned aerial vehicle is stable, switching the currently output second video picture into the first video picture.
As an optional implementation, after outputting the digital video signal, the method further comprises:
detecting whether the second video picture is blocked or not when being output;
if the second video picture is output under the condition of pause, video output parameter information matched with a display outputting the second video is obtained;
and outputting the second video picture corresponding to the digital video signal according to the video output parameter information.
As an optional implementation, the method further comprises:
if the communication signal between the control equipment and the unmanned aerial vehicle is stable, acquiring a plurality of communication channels for communication connection between the control equipment and the unmanned aerial vehicle;
performing channel quality test on each communication channel to obtain a channel quality index corresponding to each communication channel;
selecting one communication channel with the highest channel quality index from the plurality of communication channels as a target communication channel;
and switching the current communication channel to the target communication channel, receiving the analog video signal sent by the unmanned aerial vehicle through the target communication channel, and outputting a first video picture corresponding to the analog video signal.
The second aspect of the present invention discloses a video signal output apparatus for displaying a video signal acquired by an unmanned aerial vehicle, including:
the analog signal acquisition module is used for acquiring an analog video signal sent by the unmanned aerial vehicle;
the output module is used for outputting a first video picture corresponding to the analog video signal;
the detection module is used for detecting whether a communication signal between control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable or not;
the digital signal acquisition module is used for acquiring a digital video signal transmitted by the unmanned aerial vehicle from service equipment in communication connection with the control equipment when the detection module detects that the communication signal between the control equipment and the unmanned aerial vehicle is unstable;
the output module is further configured to switch the currently output first video picture to a second video picture corresponding to the digital video signal.
As an optional implementation manner, the analog video signal includes an analog signal corresponding to a real-time video signal acquired by the unmanned aerial vehicle through a camera provided on the unmanned aerial vehicle;
the digital video signal comprises a digital signal corresponding to the real-time video signal;
the video content of the digital video signal is the same as the video content of the analog video signal.
As an optional implementation manner, the detection module is further configured to detect whether there is a stuck condition when the second video picture is output after the digital video signal is output;
the video signal output apparatus further includes:
the parameter acquisition module is used for acquiring video output parameter information matched with a display outputting the second video when the detection module detects that the second video is blocked during outputting the second video picture;
the output module is further configured to output the second video picture corresponding to the digital video signal according to the video output parameter information.
A third aspect of the present invention discloses a mobile device, comprising a memory for storing a computer program and a processor for executing the computer program to make the mobile device execute part or all of the video signal output method disclosed in the first aspect.
A fourth aspect of the present invention discloses a computer-readable storage medium storing the computer program for use in the mobile device of the third aspect.
The video signal output method and the video signal output device are used for displaying the video signals acquired by the unmanned aerial vehicle. The technology firstly obtains an analog video signal sent by an unmanned aerial vehicle; outputting a first video picture corresponding to the analog video signal, and detecting whether a communication signal between a control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable; if the communication signal between the unmanned aerial vehicle and the service equipment is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment; switch into the second video picture that corresponds with digital video signal with the first video picture of current output, can be not good at radio communication's signal quality, through the real-time video signal that acquires unmanned aerial vehicle and send on the server, and can seamlessly switch between the second video picture of output and first video picture, guarantee the normal output of video picture, and then continuously output the real-time video signal that unmanned aerial vehicle acquireed, and then monitor unmanned aerial vehicle's the flight condition in real time, and then guarantee personal and property safety.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention.
Fig. 1 is a flowchart illustrating a video signal output method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a video signal output method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a video signal output apparatus according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problems in the prior art, the invention provides a video signal output method and a video signal output device; the display device is used for displaying the video signals acquired by the unmanned aerial vehicle. The technology firstly obtains an analog video signal sent by an unmanned aerial vehicle; outputting a first video picture corresponding to the analog video signal, and detecting whether a communication signal between a control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable; if the communication signal between the unmanned aerial vehicle and the service equipment is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment; switch into the second video picture that corresponds with digital video signal with the first video picture of current output, can be not good at radio communication's signal quality, through the real-time video signal that acquires unmanned aerial vehicle and send on the server, and can seamlessly switch between the second video picture of output and first video picture, guarantee the normal output of video picture, and then continuously output the real-time video signal that unmanned aerial vehicle acquireed, and then monitor unmanned aerial vehicle's the flight condition in real time, and then guarantee personal and property safety. Also, the techniques may be implemented in associated software or hardware, as described below by way of example.
Example 1
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a video signal output method according to an embodiment of the present invention. As shown in fig. 1, the video signal output method may include the steps of:
s101, acquiring an analog video signal sent by the unmanned aerial vehicle, and outputting a first video picture corresponding to the analog video signal.
In this embodiment, the video signal output method is used to display the video signal acquired by the unmanned aerial vehicle.
In this embodiment, unmanned aerial vehicle is unmanned aircraft, is the unmanned vehicles who utilizes radio remote control equipment and self-contained program control device to control, has advantages such as small, the cost is low, convenient to use, require low, the battlefield viability is stronger to the operational environment. The method may be specifically classified into an unmanned fixed-wing aircraft, an unmanned vertical takeoff and landing aircraft, an unmanned airship, an unmanned helicopter, an unmanned multi-rotor aircraft, an unmanned parachute-wing aircraft, and the like, which is not limited in this embodiment.
In this embodiment, the execution main body of the video signal output method may be a control device for controlling the unmanned aerial vehicle, and the control device is provided with a display, so that video picture display can be performed according to the video signal sent by the unmanned aerial vehicle, and then the current environmental position condition of the unmanned aerial vehicle can be accurately displayed in real time for monitoring personnel.
As an optional implementation manner, the unmanned aerial vehicle is provided with a video signal acquisition module, an analog video signal return module, and a digital video signal return module. The three modules are independent of the work of a self-contained image transmission system of the unmanned aerial vehicle, can adopt independent power supply, and can still work when the unmanned aerial vehicle breaks down and loses power.
As a further optional implementation, the video signal acquisition module may acquire a video signal through the camera and the sensor, and then may encode the acquired video signal into an analog video signal, which is sent to the monitoring device in communication connection with the analog video signal feedback module. The analog video signal feedback module can transmit the analog video signal to a monitoring device (such as a 5.8GHz video receiver) through a radio carrier signal with a frequency of 5.8 GHz. And finally, the monitoring equipment can demodulate the analog video signal and output the analog video signal through a display screen, so that the real-time flight picture of the unmanned aerial vehicle can be displayed for monitoring personnel.
In the above embodiments, the analog video signal may be a PAL analog video signal or the like, but the present embodiment is not limited thereto.
S102, detecting whether a communication signal between control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable or not, and if not, executing a step S103; if so, ending the process.
In this embodiment, when the radio communication environment between unmanned aerial vehicle and the supervisory equipment is abominable, will lead to the picture quality of analog video signal passback module to descend by a wide margin, consequently need detect whether communication signal between the controlgear of control unmanned aerial vehicle and the unmanned aerial vehicle is stable.
S103, acquiring the digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment.
And S104, switching the currently output first video picture into a second video picture corresponding to the digital video signal.
In the above embodiment, after the video signal acquisition module acquires the real-time video signal and sends the real-time video signal to the analog video signal feedback module, the real-time video signal is also transmitted to the digital video signal feedback module. Then the digital video signal passes back the module and carries out coding process to real-time video signal, obtain the coded signal (being digital video signal), then send to corresponding service equipment through mobile communication network (like 4G-LTE network etc.), then when communication signal between with unmanned aerial vehicle is unstable, will acquire the coded signal of unmanned aerial vehicle transmission through service equipment, and then show, make the output of unmanned aerial vehicle real-time video picture not receive the influence of wireless communication signal quality, and then monitor unmanned aerial vehicle's flight condition in real time, and then guarantee personal and property safety.
In the above embodiment, the analog video signal feedback module and the digital video signal feedback module operate independently and simultaneously without mutual influence. Once a certain path breaks down, the ground monitoring equipment can seamlessly switch between the output second video picture and the first video picture, so that the normal output of the video pictures is guaranteed, and the flight safety of the unmanned aerial vehicle is guaranteed to the maximum extent.
In the video signal output method described in fig. 1, the method is used for displaying a video signal acquired by a drone. The technology firstly obtains an analog video signal sent by an unmanned aerial vehicle; then outputting a first video picture corresponding to the analog video signal, and detecting whether a communication signal between control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable; if the communication signal between the unmanned aerial vehicle and the service equipment is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment; and finally, switching the currently output first video picture into a second video picture corresponding to the digital video signal. Therefore, by implementing the video signal output method described in fig. 1, the signal quality of wireless communication is poor, the normal output of the video pictures can be ensured by acquiring the real-time video signal sent by the unmanned aerial vehicle on the server and seamlessly switching between the output second video picture and the first video picture, so that the real-time video signal acquired by the unmanned aerial vehicle is continuously output, the flight condition of the unmanned aerial vehicle is monitored in real time, and personal and property safety is ensured.
Example 2
Referring to fig. 2, fig. 2 is a flowchart illustrating a video signal output method according to an embodiment of the present invention. As shown in fig. 2, the video signal output method may include the steps of:
s201, acquiring an analog video signal sent by the unmanned aerial vehicle, and outputting a first video picture corresponding to the analog video signal.
In this embodiment, the video signal output method is used to display the video signal acquired by the unmanned aerial vehicle.
In this embodiment, analog video signal includes the analog signal that real-time video signal that unmanned aerial vehicle obtained through the camera that sets up on the unmanned aerial vehicle corresponds.
S202, detecting whether a communication signal between control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable or not, and if the communication signal is not stable, executing a step S207; if stable, step S203 to step S206 are executed.
S203, obtaining a plurality of communication channels for communication connection between the control device and the unmanned aerial vehicle.
And S204, carrying out channel quality test on each communication channel to obtain a channel quality index corresponding to each communication channel.
S205, selecting one communication channel with the highest channel quality index from the plurality of communication channels as a target communication channel.
S206, switching the current communication channel to a target communication channel, receiving the analog video signal sent by the unmanned aerial vehicle through the target communication channel, outputting a first video picture corresponding to the analog video signal, and ending the process.
And S207, acquiring the digital video signal transmitted by the unmanned aerial vehicle from the service equipment in communication connection with the control equipment.
In this embodiment, the digital video signal includes a digital signal corresponding to the real-time video signal; the video content of the digital video signal is the same as the video content of the analog video signal.
And S208, switching the currently output first video picture into a second video picture corresponding to the digital video signal.
S209, detecting whether a communication signal between the control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable again, and if the communication signal is not stable, ending the process; if stable, step S210 is performed.
And S210, switching the currently output second video picture into the first video picture.
As an alternative embodiment, after outputting the digital video signal, the method further comprises:
detecting whether the second video picture is blocked or not when being output;
if the second video image is output under the condition of pause, acquiring video output parameter information matched with a display for outputting the second video;
and outputting a second video picture corresponding to the digital video signal according to the video output parameter information.
It can be seen that, by implementing the video signal output method described in fig. 2, when the signal quality of wireless communication is not good, the real-time video signal sent by the unmanned aerial vehicle on the server can be obtained, and seamless switching can be performed between the output second video picture and the first video picture, so that the real-time video signal obtained by the unmanned aerial vehicle can be continuously output, and further, the flight condition of the unmanned aerial vehicle can be monitored in real time, and further, personal and property safety can be ensured.
Example 3
Referring to fig. 3, fig. 3 is a schematic structural diagram of a video signal output apparatus according to an embodiment of the present invention. As shown in fig. 3, the video signal output apparatus includes:
and the analog signal acquisition module 301 is configured to acquire an analog video signal sent by the unmanned aerial vehicle.
In this embodiment, the video signal output method is used to display the video signal acquired by the unmanned aerial vehicle.
In this embodiment, analog video signal includes the analog signal that real-time video signal that unmanned aerial vehicle obtained through the camera that sets up on the unmanned aerial vehicle corresponds.
The output module 302 is configured to output a first video picture corresponding to the analog video signal.
The detection module 303 is configured to detect whether a communication signal between the control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable.
In this embodiment, after the output module 302 outputs the first video picture corresponding to the analog video signal, the detection module 303 may be further triggered to detect whether a communication signal between the control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable.
And the digital signal acquisition module 304 is configured to acquire a digital video signal transmitted by the drone from a service device in communication connection with the control device when the detection module 303 detects that the communication signal between the control device and the drone is unstable.
In this embodiment, the digital video signal includes a digital signal corresponding to the real-time video signal; the video content of the digital video signal is the same as the video content of the analog video signal.
The output module 302 is further configured to switch the currently output first video picture to a second video picture corresponding to the digital video signal.
As an alternative embodiment, the detecting module 303 is further configured to detect whether there is a stuck condition when the second video picture is output after the digital video signal is output.
The video signal output apparatus further includes:
a parameter obtaining module 305, configured to obtain video output parameter information matched with a display that outputs the second video when the detection module 303 detects that there is a pause in outputting the second video;
the output module 302 is further configured to output a second video picture corresponding to the digital video signal according to the video output parameter information.
It is thus clear that the video signal output device that the implementation figure 3 described, can be not good at wireless communication's signal quality, through the real-time video signal that acquires unmanned aerial vehicle and send on the server to can seamlessly switch between the second video picture of output and the first video picture, guarantee the normal output of video picture, and then continuously output the real-time video signal that unmanned aerial vehicle acquireed, and then monitor unmanned aerial vehicle's the flight condition in real time, and then guarantee personal and property safety.
In addition, the invention also provides the mobile equipment. The mobile device comprises a memory for storing a computer program and a processor for executing the computer program to make the mobile device execute the above method or the functions of each module in the above video signal output apparatus.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, a video playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the mobile terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The embodiment also provides a computer storage medium for storing a computer program used in the mobile device.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A video signal output method for displaying a video signal acquired by an unmanned aerial vehicle, comprising:
acquiring an analog video signal sent by an unmanned aerial vehicle, and outputting a first video picture corresponding to the analog video signal;
detecting whether a communication signal between a control device controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable;
if the communication signal between the control equipment and the unmanned aerial vehicle is unstable, acquiring a digital video signal transmitted by the unmanned aerial vehicle from service equipment in communication connection with the control equipment;
switching the currently output first video picture into a second video picture corresponding to the digital video signal;
detecting whether the second video picture is blocked or not when being output;
if the second video picture is output under the condition of pause, video output parameter information matched with a display outputting the second video is obtained;
and outputting the second video picture corresponding to the digital video signal according to the video output parameter information.
2. The video signal output method according to claim 1, wherein the analog video signal includes an analog signal corresponding to a real-time video signal acquired by the drone through a camera provided on the drone;
the digital video signal comprises a digital signal corresponding to the real-time video signal;
the video content of the digital video signal is the same as the video content of the analog video signal.
3. The video signal output method according to claim 1, wherein after the digital video signal is output, the method further comprises:
detecting whether a communication signal between the control equipment and the unmanned aerial vehicle is stable again;
and if the communication signal between the control equipment and the unmanned aerial vehicle is stable, switching the currently output second video picture into the first video picture.
4. The video signal output method according to claim 1, characterized in that the method further comprises:
if the communication signal between the control equipment and the unmanned aerial vehicle is stable, acquiring a plurality of communication channels for communication connection between the control equipment and the unmanned aerial vehicle;
performing channel quality test on each communication channel to obtain a channel quality index corresponding to each communication channel;
selecting one communication channel with the highest channel quality index from the plurality of communication channels as a target communication channel;
and switching the current communication channel to the target communication channel, receiving the analog video signal sent by the unmanned aerial vehicle through the target communication channel, and outputting a first video picture corresponding to the analog video signal.
5. A video signal output apparatus for displaying a video signal acquired by an unmanned aerial vehicle, comprising:
the analog signal acquisition module is used for acquiring an analog video signal sent by the unmanned aerial vehicle;
the output module is used for outputting a first video picture corresponding to the analog video signal;
the detection module is used for detecting whether a communication signal between control equipment for controlling the unmanned aerial vehicle and the unmanned aerial vehicle is stable or not;
the digital signal acquisition module is used for acquiring a digital video signal transmitted by the unmanned aerial vehicle from service equipment in communication connection with the control equipment when the detection module detects that the communication signal between the control equipment and the unmanned aerial vehicle is unstable;
the output module is further configured to switch the currently output first video picture to a second video picture corresponding to the digital video signal;
the detection module is further configured to detect whether a stuck condition exists when the second video picture is output after the digital video signal is output;
the video signal output apparatus further includes:
the parameter acquisition module is used for acquiring video output parameter information matched with a display outputting the second video when the detection module detects that the second video is blocked during outputting the second video picture;
the output module is further configured to output the second video picture corresponding to the digital video signal according to the video output parameter information.
6. The video signal output device according to claim 5, wherein the analog video signal includes an analog signal corresponding to a real-time video signal acquired by the unmanned aerial vehicle through a camera provided on the unmanned aerial vehicle;
the digital video signal comprises a digital signal corresponding to the real-time video signal;
the video content of the digital video signal is the same as the video content of the analog video signal.
7. A mobile device, characterized by comprising a memory for storing a computer program and a processor for executing the computer program to cause the mobile device to perform the video signal output method of any one of claims 1 to 4.
8. A computer-readable storage medium, characterized in that it stores the computer program used in the mobile device of claim 7.
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