CN113489921A - Video image display control method, device and system - Google Patents
Video image display control method, device and system Download PDFInfo
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Abstract
The application relates to a video image display control method, equipment and a system, which belong to the technical field of audio and video control, wherein the system comprises an operation end and at least two pieces of display equipment; the method comprises the following steps: monitoring an instruction sent by an operation end, and judging whether the instruction is a screen capture trigger instruction or not; when the command is a screen capture triggering command, acquiring a screen image on the current display equipment bound with the operation end according to the screen capture triggering command to form screen image information, and sending an image display request; receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information; and sending the screen image information to the target display equipment, and displaying an image according to the screen image information after the target display equipment receives the screen image information. This application has the advantage that helps promoting the effect of demonstration and explanation.
Description
Technical Field
The present application relates to the field of audio and video control technologies, and in particular, to a method, device, and system for controlling video image display.
Background
With the continuous development of information technology, indoor places for teaching, meetings and the like need to meet the traditional simple meeting or teaching requirements, and also need to have beautiful tone quality and clear video demonstration, so that audio and video systems for indoor environments such as classrooms and multifunctional rooms are born.
As shown in fig. 1, the conventional audio/video system for a classroom and a multifunctional room is composed of a wireless conference microphone 1, a sound console 2, a power amplifier 3 and a sound box 4 which are sequentially connected through audio lines, and a wireless projection gateway 5, a video mixing matrix 6 and a display device 7 which are sequentially connected through video lines such as VGA/HDMI. The wireless projection gateway 5 is also connected with the sound console 2 through an audio cable, and is used for transmitting audio signals of an operation terminal 8 connected with the wireless projection gateway, such as a PC (personal computer), a tablet, a mobile phone and the like, to the sound console 2, and then performing voice playing through the sound box 4; the display device 7 may employ a projector, an LED display screen, or the like, for receiving the video signal output from the video mixing matrix 6 and performing display of pictures.
The related art described above has the following drawbacks: although one input signal can be sent to a plurality of display devices through the video mixing matrix, when video demonstration is performed, a picture displayed by the display devices is synchronous with an operation end, an operator needs to give up the current video demonstration and perform corresponding operation on the operation end to review or contrast the explanation content, and the demonstration and explanation effects are poor.
Disclosure of Invention
In order to solve the problem of poor demonstration and explanation effects, the application provides a video image display control method, video image display control equipment and a video image display control system.
In a first aspect, the present application provides a video image display control method, which adopts the following technical solutions:
a video image display control method is based on an audio and video system, and the audio and video system comprises: the system comprises an operation end and at least two display devices; the video image display control method includes:
monitoring an instruction sent by an operation end, and judging whether the instruction is a screen capture trigger instruction or not;
when the command is a screen capture triggering command, acquiring a screen image on the current display equipment bound with the operation end according to the screen capture triggering command to form screen image information, and sending an image display request;
receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information;
and sending the screen image information to the target display equipment, and displaying an image according to the screen image information after the target display equipment receives the screen image information.
By adopting the technical scheme, a user can send a screen capture triggering instruction through the operation end so as to capture the screen image on the display area of the current display equipment bound with the operation end, and after the user sends the indication information, the current display equipment bound with the operation end sends the screen image information to the target display equipment indicated by the indication information, so that the target display equipment displays the captured screen image; therefore, an operator can display the demonstrated explanation content such as PPT (point-to-point) screenshots and real-time notes on the target display equipment without giving up the current video demonstration, the aim of synchronously reviewing the explanation content or contrasting the explanation content without interrupting the current video demonstration is fulfilled, and the method has the advantage of being beneficial to improving the demonstration and explanation effects.
Optionally, the determining whether the instruction is a screen capture trigger instruction specifically includes:
and judging whether the instruction contains a screen capture trigger signal or not, wherein the time for continuously generating the screen capture trigger signal exceeds a preset threshold value.
Optionally, the value range of the preset threshold is 0.3 to 3 seconds.
By adopting the technical scheme, the screen capture condition caused by misoperation of the user can be effectively prevented, and the user experience is ensured.
Optionally, when the instruction is a screen capture trigger instruction, acquiring screen image forming screen image information on the current display device bound with the operation terminal according to the screen capture trigger instruction, and sending the image display request includes:
when the command is a screen capture triggering command, acquiring a screen image of display equipment bound with an operation end under a current time node to form screen image information;
and sending the image display request according to the screen image information.
Optionally, after the step of sending the image display request according to the screen image information, the method includes:
and sending the screen image information to a picture cache library preset by an operation end for storage and previewing by a user.
Optionally, the video image display control method further includes:
monitoring whether an operation terminal sends broadcast information, wherein the broadcast information carries screen image information selected by a user from a picture cache library, identification information of a target display device and authorization information used for indicating that the screen image information selected by the user from the picture cache library is allowed to be sent to the target display device;
and after receiving the broadcast information, sending the screen image information selected by the user from the picture cache library to the target display equipment.
By adopting the technical scheme, the intercepted screen image can be sent to the operation end for the user to preview and check, meanwhile, the user can also select the picture to send to the selected target display equipment by oneself to display, the operation is more convenient, and the experience is better.
In a second aspect, the present application provides a display device, which adopts the following technical solutions:
a display device comprising a first memory and a first processor, the first memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by the first processor to perform the functions of:
monitoring an instruction sent by the matched operation end, and judging whether the instruction is a screen capture trigger instruction or not;
when the command is a screen capture triggering command, acquiring a currently displayed screen image in a display area according to the screen capture triggering command to form screen image information, and sending an image display request;
receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information;
and sending the screen image information to the target display equipment.
In a third aspect, the present application provides a display device, which adopts the following technical solutions:
a display device comprising a second memory and a second processor, the second memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by the second processor to implement the functions of:
obtaining screen image information sent by the display equipment paired with the operation end from the display equipment paired with the operation end;
and displaying an image according to the screen image information after the screen image information is obtained.
In a fourth aspect, the present application provides an audio/video system, which adopts the following technical solutions:
an audio and video system comprises an operation end and at least two display devices, wherein:
a display device comprising a first memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by a first processor to perform the functions of: monitoring an instruction sent by the matched operation end, and judging whether the instruction is a screen capture trigger instruction or not; when the command is a screen capture triggering command, acquiring a currently displayed screen image in a display area according to the screen capture triggering command to form screen image information, and sending an image display request; receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information; sending the screen image information to the target display device;
another display device includes a second memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by the second processor to implement the functions of: obtaining screen image information sent by the display equipment paired with the operation terminal from the display equipment paired with the operation terminal; and displaying an image according to the screen image information after the screen image information is obtained.
Optionally, the operation end is connected to each of the display devices through a wireless projection gateway.
To sum up, the application comprises the following beneficial technical effects:
when a user sends a screen capture triggering instruction through an operation end, a screen image on a display area of the current display equipment bound with the operation end can be captured, and an image display request is sent to the user; meanwhile, due to the fact that the preset threshold value is set, the situation of mistaken screen capturing caused by misoperation of the user is facilitated to be reduced for the user; in addition, when the user needs to compare or review other screen images in the picture cache library in the process of displaying the current video, the user can also send broadcast information after selecting the screen image from the picture cache library through the operation terminal, and then the current display equipment can send the screen image selected by the user from the picture cache library to the target display equipment for displaying, so that the use convenience is further improved.
Drawings
Fig. 1 is a block diagram of a classroom and multi-functional room audio/video system in the background art.
Fig. 2 is a block diagram of an audio/video system according to embodiment 1 of the present application.
Fig. 3 is a schematic structural diagram of a display device according to embodiment 1 of the present application.
Fig. 4 is a flowchart illustrating a video image display control method according to embodiment 1 of the present application.
Fig. 5 is a schematic structural diagram for embodying a connection relationship between display devices according to embodiment 3 of the present application.
Description of reference numerals: 1. a wireless conference microphone; 2. a sound console; 3. amplifying power; 4. a sound box; 5. a wireless projection gateway; 6. a video mixing matrix; 7. a display device; 71. a display body; 72. a communication module; 73. a main board; 731. a memory; 732. a processor; 74. a display area; 8. and an operation end.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
First, terms related to embodiments of the present application will be described.
Video images, which generally refer to a sequence of consecutive still images, are a more visual, vivid description of objective things; the video image in the application refers to a picture generated by screenshot of a video demonstration picture, and is also called a screen image.
The wireless projection gateway is a wireless transmission device for transmitting audio and video signals from a signal source (a computer and high-definition playing equipment) to a far-end HDTV or high-definition projector, can realize 1080P/60 and 3D lossless and delay-free transmission, does not need to install software, and can be used in a plug-and-play mode; in addition, the equipment is a wireless gateway, the wireless local area network can be transmitted by connecting with a power supply, and the notebook/display equipment with the wireless network card can be wirelessly connected and can be simultaneously connected with a plurality of computers.
The video mixing matrix can be used for various video devices with different resolutions, formats and interfaces, for example, in a video conference engineering project, due to the adoption of video devices of different manufacturers, video signals with different formats and interfaces, such as HDMI, DVI, SD/HD/3G-SDI, Display Port, VGA, AV, YPbPr and other signals, need to be input, and the video mixing matrix can realize the output of the mixed signals of the video types, and simultaneously support the input and output of network cables and optical fibers of various signals.
The sound console, also known as a sound console, is used for amplifying, mixing, distributing, modifying tone quality and processing sound effect of multiple input signals, and then outputting the signals through a bus, and is important equipment for broadcasting and recording programs in systems such as video conferences, stage sound amplification, sound program manufacturing and the like.
The following describes embodiments of the audio/video system of the present application in further detail with reference to the drawings of the specification.
Example 1:
the embodiment of the application discloses an audio and video system. Referring to fig. 2, the audio/video system includes a wireless conference microphone 1, a sound console 2, a power amplifier 3, a sound box 4, a wireless projection gateway 5, a video mixing matrix 6, an operation terminal 8, and two display devices 7. The wireless conference microphone 1, the sound console 2, the power amplifier 3 and the sound box 4 are sequentially connected through an audio cable and used for playing the sound recorded by the wireless conference microphone 1 through the sound console 2 and the power amplifier 3 and then through the sound box 4; the wireless projection gateway 5, the video mixing matrix 6 and the display device 7 are sequentially connected through video lines such as VGA/HDMI, the wireless projection gateway 5 is further connected with the sound console 2 through an audio line, and audio signals of operation terminals 8 such as a PC, a tablet and a mobile phone which are connected with the wireless projection gateway 5 are transmitted to the sound console 2, the video signals are transmitted to the video mixing matrix 6, voice playing through the sound box 4 is achieved, and video picture display is conducted through the display device 7. The display device 7 may employ a projector, an LED display screen, or the like, and is configured to receive the video signal output from the video mixing matrix 6 and perform display of a picture based on the received video signal.
Referring to fig. 3, both display devices 7 include a display body 71, a communication module 72 mounted on the display body 71, and a main board 73 mounted inside the display body 71; both of the motherboards 73 have integrated thereon a memory 731 and a processor 732. The relative position relationship between the two display devices 7 and the respective display areas 74 are as shown in fig. 3, a communication connection is established between the two display devices 7 through the communication module 72, and information interaction can be realized through the respective installed service programs; the communication module 72 here includes various implementations, such as USB communication, bluetooth communication, local area network communication, and so on.
In one of the display devices 7, at least one instruction, at least one program, set of codes, or set of instructions is stored in the memory 731 thereof, which is capable of being loaded and executed by the processor 732 thereof to perform the following functions: monitoring the command sent by the matched operation end 8, and judging whether the command sent by the operation end 8 is a screen capture trigger command; when the instruction sent by the operation terminal 8 is a screen capture trigger instruction, acquiring screen image forming screen image information currently displayed in the display area 74 according to the screen capture trigger instruction, and sending an image display request of this time; receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information; and sending the screen image information to the determined target display device.
In the further display device 7, also having at least one instruction, at least one program, set of codes, or set of instructions stored in its memory 731, the at least one instruction, at least one program, set of codes, or set of instructions in its memory 731 is loadable and executable by its processor 732 to perform the functions of: obtaining screen image information sent by the display device 7 paired with the operation terminal 8 from the display device 7 paired with the operation terminal 8; and when the screen image information is obtained, displaying the image according to the screen image information.
Referring to fig. 1, in the present embodiment, the operation terminal 8 is connected to two display devices 7 through the wireless projection gateway 5.
The following describes in detail the implementation of the video image display control method with reference to the above-mentioned audio/video system:
referring to fig. 4, an embodiment of the present application further provides a video image display control method, where the method includes:
s10, monitoring the instruction sent by the operation end 8, and judging whether the instruction sent by the operation end 8 is a screen capture trigger instruction;
s20, when the instruction sent by the operation terminal 8 is judged to be a screen capture trigger instruction, acquiring a screen image on the display area 74 of the current display device 7 bound with the operation terminal 8 according to the screen capture trigger instruction to form screen image information, and sending an image display request to the operation terminal 8;
s30, receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information; the indication information carries identification information of a target display device input or selected by a user and authorization information used for indicating that the current display device 7 bound by the operation terminal 8 is allowed to send the screen image information to the target display device;
and S40, sending the screen image information to the target display device, so that after the target display device receives the screen image information sent by the current display device 7 bound by the operation terminal 8, the video image corresponding to the screen image information is displayed according to the received screen image information.
In this way, after the user sends a screenshot triggering instruction through the operation terminal 8, the user can intercept the screen image on the display area 74 of the current display device 7 bound with the operation terminal 8 and send an image display request to the user, after the user sends indication information through the operation terminal 8 in response to the image display request, the current display device 7 bound with the operation terminal 8 sends the screen image information to the target display device indicated by the indication information, so that the target display device displays the screen image intercepted from the current display device 7 bound with the operation terminal 8, and thus the operator can display the screenshot of the already demonstrated explanation content such as PPT, real-time notes and the like on the target display device without giving up the current video demonstration, thereby achieving the purpose of synchronously reviewing the explanation content or contrasting the explanation content without interrupting the current video demonstration, is favorable for improving the effects of demonstration and explanation.
Example 2:
the present embodiment is different from other embodiments mainly in that: in this embodiment, in the video image display control method, the specific step of determining whether the instruction sent by the operation terminal 8 is the screen capture trigger instruction is:
and judging whether the instruction sent by the operation terminal 8 contains the screen capture trigger signal and the time for continuously generating the screen capture trigger signal exceeds a preset threshold value.
Specifically, the value range of the preset threshold is 0.3 to 3 seconds, and in practical application, the value of the preset threshold may be 0.3 second, 0.6 second, 0.9 second, 1.5 second, 3 seconds, and the like. The screen capture trigger signal may be triggered by pressing an entity key on the operation terminal 8, pressing or clicking a virtual key, and the like.
The processor 732 in the display device 7 of this embodiment can further implement the above-mentioned functions when running at least one instruction, at least one program, a code set, or an instruction set, and will not be described herein again.
Thus, if the time for which the screen capture trigger signal is continuously generated exceeds the preset threshold, the operation end 8 will send a screen capture trigger instruction, and the current display device 7 bound to the operation end 8 will capture the screen of the current display area 74 after receiving the screen capture trigger instruction, so that the interaction between the operation end 8 and the display device 7 is smoother. And the value range of the preset threshold is set to be 0.3-3 seconds, so that the screen capture error condition caused by the misoperation of the user can be reduced for the user, the user experience is improved, meanwhile, the screen capture operation can not be complicated by continuous pressing operation, and the user experience is improved to a certain extent.
Example 3:
the present embodiment is different from other embodiments mainly in that: in this embodiment, in the video image display control method, when it is determined that the instruction sent by the operation terminal 8 is the screen capture trigger instruction, acquiring a screen image on the display area 74 of the current display device 7 bound to the operation terminal 8 according to the screen capture trigger instruction to form screen image information, and sending an image display request to the operation terminal 8 includes:
when the instruction sent by the operation end 8 is judged to be a screen capture triggering instruction, acquiring a screen image of the display device 7 bound with the operation end 8 under the current time node to form screen image information;
sending an image display request according to the acquired screen image information;
and then, sending the screen image information to a picture cache library preset by the operation terminal 8 for storage and previewing by the user.
Therefore, the image display request is sent out firstly, and then the screen image information is sent to the picture cache library preset by the operation terminal 8 to be stored, so that the operation response time is not influenced, the interaction between the operation terminal 8 and the display device 7 is smoother, meanwhile, the screen image information can be sent to the picture cache library preset by the operation terminal 8 to be previewed and checked by a user, and the user experience is greatly improved.
In addition, the video image display control method of the present embodiment further includes:
monitoring whether the operation terminal 8 sends broadcast information, wherein the broadcast information carries screen image information selected by a user from a picture cache library, identification information of a target display device and authorization information used for indicating permission of sending the screen image information selected by the user from the picture cache library to the target display device; and after the current display equipment 7 bound with the operation terminal 8 receives the broadcast information, the current display equipment 7 sends the screen image information selected by the user from the picture cache library to the target display equipment for displaying.
Therefore, when the user needs to compare or review other screen images in the picture cache library in the process of displaying the current video, the user can send broadcast information after selecting the screen image from the picture cache library through the operation terminal 8, and then the current display device 7 can send the screen image selected by the user from the picture cache library to the target display device for displaying, so that the use convenience is further improved.
The target display device in the broadcast information may be any other display device 7 selected by the user as required except the current display device 7. Then, other display devices 7 may be arranged in the vicinity of the current display device 7, the number may be 1, 2, 3, or 4, etc., as shown in fig. 5.
It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Those skilled in the art will appreciate that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing associated hardware, where the program may be stored in a computer-readable storage medium, where the above-mentioned storage medium includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A video image display control method is characterized in that the video image display control method is based on an audio and video system, and the audio and video system comprises: the system comprises an operation end and at least two display devices; the video image display control method includes:
monitoring an instruction sent by an operation end, and judging whether the instruction is a screen capture trigger instruction or not;
when the command is a screen capture triggering command, acquiring a screen image on the current display equipment bound with the operation end according to the screen capture triggering command to form screen image information, and sending an image display request;
receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information;
and sending the screen image information to the target display equipment, and displaying an image according to the screen image information after the target display equipment receives the screen image information.
2. The method according to claim 1, wherein the determining whether the command is a screen capture trigger command specifically comprises:
and judging whether the instruction contains a screen capture trigger signal or not, wherein the time for continuously generating the screen capture trigger signal exceeds a preset threshold value.
3. The method according to claim 2, wherein the preset threshold value ranges from 0.3 to 3 seconds.
4. The method according to claim 1, wherein when the command is a screen capture trigger command, the step of acquiring screen image forming screen image information on a current display device bound to an operation terminal according to the screen capture trigger command and sending a current image display request includes:
when the command is a screen capture triggering command, acquiring a screen image of display equipment bound with an operation end under a current time node to form screen image information;
and sending the image display request according to the screen image information.
5. The method according to claim 4, wherein said step of issuing the present image display request based on the screen image information is followed by:
and sending the screen image information to a picture cache library preset by an operation end for storage and previewing by a user.
6. The video image display control method according to claim 5, characterized in that the video image display control method further comprises:
monitoring whether an operation terminal sends broadcast information, wherein the broadcast information carries screen image information selected by a user from a picture cache library, identification information of a target display device and authorization information used for indicating that the screen image information selected by the user from the picture cache library is allowed to be sent to the target display device;
and after receiving the broadcast information, sending the screen image information selected by the user from the picture cache library to the target display equipment.
7. A display device comprising a first memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, the at least one instruction, at least one program, set of codes, or set of instructions being loaded and executed by a first processor to implement the following functions:
monitoring an instruction sent by the matched operation end, and judging whether the instruction is a screen capture trigger instruction or not;
when the command is a screen capture triggering command, acquiring a currently displayed screen image in a display area according to the screen capture triggering command to form screen image information, and sending an image display request;
receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information;
and sending the screen image information to the target display equipment.
8. A display device comprising a second memory and a second processor, the second memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, the at least one instruction, at least one program, set of codes, or set of instructions being loaded and executed by the second processor to implement the functions of:
obtaining screen image information sent by the display equipment paired with the operation end from the display equipment paired with the operation end;
and displaying an image according to the screen image information after the screen image information is obtained.
9. An audio/video system is characterized by comprising an operation end and at least two display devices, wherein:
a display device comprising a first memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by a first processor to perform the functions of: monitoring an instruction sent by the matched operation end, and judging whether the instruction is a screen capture trigger instruction or not; when the command is a screen capture triggering command, acquiring a currently displayed screen image in a display area according to the screen capture triggering command to form screen image information, and sending an image display request; receiving indication information input or selected by a user in response to the image display request, and determining target display equipment needing to receive the screen image according to the indication information; sending the screen image information to the target display device;
another display device includes a second memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions that is loaded and executed by the second processor to implement the functions of: obtaining screen image information sent by the display equipment paired with the operation terminal from the display equipment paired with the operation terminal; and displaying an image according to the screen image information after the screen image information is obtained.
10. The audio-video system according to claim 9, wherein the operation terminal is connected to each of the display devices through a wireless projection gateway.
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