CN113206970A - Wireless screen projection method and device for video communication and storage medium - Google Patents
Wireless screen projection method and device for video communication and storage medium Download PDFInfo
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- CN113206970A CN113206970A CN202110413017.XA CN202110413017A CN113206970A CN 113206970 A CN113206970 A CN 113206970A CN 202110413017 A CN202110413017 A CN 202110413017A CN 113206970 A CN113206970 A CN 113206970A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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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
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
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Abstract
The invention discloses a wireless screen projection method, a wireless screen projection device and a storage medium for video communication, wherein the wireless screen projection method specifically comprises the following steps of S1: acquiring picture content and audio data uploaded by at least one first terminal, putting the picture content of the first terminal into a second terminal, and simultaneously playing the audio data; converting the audio data to obtain text information and displaying the text information on the second terminal; step S2: and receiving a zooming instruction sent by any first terminal, and zooming the picture content corresponding to the first terminal on the second terminal according to the zooming instruction. The invention can realize the effect of synchronous screen projection of a plurality of first terminals, can zoom the size of a projected picture according to the operation of the first terminals, is convenient for a viewer to clearly see the screen projection contents of a plurality of devices, can convert audio data into character information, is convenient for the viewer to know the speaking content of each speaker, and improves the practicability of video conversation.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a wireless screen projection method and device for video communication and a storage medium.
Background
At present, the popularity of video communication is higher and higher, and particularly in enterprises, the enterprises can communicate with employees or clients not in the same area by using a video conference, so that the communication efficiency can be improved; the existing video call generally needs all participants to install the same video call software, when a video conference is initiated, a conference room needs to be established first, and then all the participants are added into the same conference room, so that all the participants can see video conference pictures; the existing video call system has the following disadvantages:
(1) in the video conference process, generally only one participant can show the current picture of the computer, if conference data is stored in the computers of different participants, the data of each participant needs to be collected in advance, all the data are shown by the computer of one participant when the conference is carried out, and the function that a plurality of participants show the computer pictures at the same time cannot be achieved;
(2) the existing video conference can only be watched by utilizing own equipment of participants, if pictures are required to be released, the equipment of one participant can only be connected with a releasing screen, but the simultaneous release of the pictures on the equipment of a plurality of participants cannot be realized; in addition, a plurality of pictures are displayed in the same display screen, so that each picture in the display screen is easy to be smaller, and the content in the pictures is not easy to see clearly;
(3) when a plurality of participants join in the same video conference, the sound of a plurality of people can lead to that which participant can not be clearly distinguished is the sound of the participant, so that other people can not clearly listen to the speech of each person.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a wireless screen projecting method for video communication, which can achieve the effect of synchronously projecting screens by a plurality of first terminals, and can scale the size of a projected screen according to the operation of the first terminals, so that viewers can clearly see the screen projecting contents of a plurality of devices, and simultaneously can convert audio data into text information, so that the viewers can conveniently know the speaking content of each speaker, thereby improving the practicability of video communication.
The second object of the present invention is to provide a projection device.
It is a further object of the present invention to provide a storage medium.
One of the purposes of the invention is realized by adopting the following technical scheme:
a wireless screen projection method for video communication comprises the following steps:
step S1: acquiring picture content and audio data uploaded by at least one first terminal, putting the picture content of the first terminal into a second terminal, and simultaneously playing the audio data; converting the audio data to obtain text information and displaying the text information on the second terminal;
step S2: and receiving a zooming instruction sent by any first terminal, and zooming the picture content corresponding to the first terminal on the second terminal according to the zooming instruction.
Furthermore, the first terminal and the second terminal are both connected with a cloud end through a wireless network, and the first terminal marks the picture content and the audio data at the same moment and uploads the picture content and the audio data to the cloud end; and the second terminal acquires the picture content and the audio data marked as the same moment in the cloud and plays the picture content and the audio data.
Further, when the image contents uploaded by two or more first terminals are acquired in step S1, the second terminal has a corresponding number of display areas equally divided, and the image contents of different first terminals are displayed in different display areas.
Further, after the picture content and the audio data of the first terminal are acquired in step S1, the picture content and the audio data sent by the same first terminal and the text information obtained by converting the audio data are labeled in an associated manner, and the text information and the picture content of the same associated identifier are displayed in the same display area of the second terminal.
Further, the method for the first terminal to issue the zoom instruction includes:
judging whether any first terminal recognizes at least two contacts generated when a user presses a terminal screen by a finger, if so, judging whether the first terminal recognizes a contact moving path generated by dragging the terminal screen by the finger, and if so, generating a reduction instruction; if the contact point moving path is that the contact point moves towards the peripheral direction, an amplification command is generated.
Further, the scaling the picture content corresponding to the first terminal on the second terminal according to the scaling instruction includes:
and any one first terminal generates a contact point moving path, calculates the scaling according to the contact point moving path and feeds the scaling back to a second terminal, and the second terminal scales the display area corresponding to the first terminal according to the scaling.
Further, when the second terminal scales the display area corresponding to the first terminal according to the scaling, if the size of the enlarged display area is larger than the screen size of the second terminal, the display area is adjusted to the screen size of the second terminal for playing the picture content; and if the size of the display area in the second terminal is reduced to be smaller than the preset size, playing the picture content according to the preset size.
Further, the method for the first terminal to issue the zoom instruction includes:
and when a zooming key on any first terminal is triggered, generating a corresponding zooming instruction.
The second purpose of the invention is realized by adopting the following technical scheme:
a screen projection device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and the processor executes the computer program to realize the wireless screen projection method for video communication.
The third purpose of the invention is realized by adopting the following technical scheme:
a storage medium having stored thereon a computer program which, when executed, implements the above-described wireless screen projection method for video communication.
Compared with the prior art, the invention has the beneficial effects that:
(1) the screen display method comprises the steps that the screen contents uploaded by a plurality of first terminals can be received, and the screen contents of the plurality of first terminals are displayed on the same second terminal, so that the effect of synchronous screen projection of the plurality of first terminals is achieved;
(2) the audio data obtained by each first terminal can be converted into text information to be displayed, so that a viewer can know the speaking content of each speaker on the second terminal in a text mode, and the information acquisition integrity of the viewer is improved;
(3) when any user needs to perform detailed analysis on the displayed picture, the size of the corresponding throwing picture on the second terminal can be zoomed, so that a viewer can see the throwing picture clearly, and the practicability of video conversation is improved.
Drawings
FIG. 1 is a schematic flow chart illustrating a wireless screen projection method for video communication according to the present invention;
fig. 2 is a schematic block diagram of signal transmission of a first terminal and a second terminal according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example one
The embodiment provides a wireless screen projection method for video communication, which is applied to at least one second terminal and at least one first terminal, wherein the second terminal is used as a device for finally displaying screen projection contents and can be a display tool such as an electronic whiteboard, a display screen or a computer screen, and the first terminal is used as a device for actively sending the screen projection contents and can be a communication device such as a mobile phone, a computer, a tablet and the like of a user. In this embodiment, the number of the second terminals and the number of the first terminals are not specifically limited, and if the number of the second terminals and the number of the first terminals are two or more, different first terminals may respectively launch screen launching contents thereof on a designated second terminal to display, that is, the screen launching contents of the first terminal a are launched on the second terminal a, the screen launching contents of the first terminal B are launched on the second terminal B, the screen launching contents of the first terminal a and the first terminal B are both launched on the second terminal a, and the screen launching contents of the first terminal a and the first terminal B are launched on the second terminal a and the second terminal B simultaneously.
In this embodiment, two second terminals place their contents on one second terminal, as shown in fig. 1 and fig. 2, the wireless screen-placing method in this embodiment includes:
step S1: acquiring picture contents and audio data uploaded by two first terminals, putting the picture contents of the first terminals into a second terminal, and simultaneously playing the audio data; converting the audio data to obtain text information and displaying the text information on the second terminal;
step S2: and receiving a zooming instruction sent by any first terminal, and zooming the picture content corresponding to the first terminal on the second terminal according to the zooming instruction.
In this embodiment, the first terminal and the second terminal are both connected to a cloud terminal through a wireless network, the first terminal uploads screen projection content to the cloud terminal, and the second terminal plays the screen projection content uploaded by the first terminal from the cloud terminal; at this moment, a connection mode of the cloud end needs to be set, for example, the cloud end generates a corresponding account and a password for the same video conference, the first terminal is connected with the cloud end through the account and the password, the first terminal and the second terminal are the same and are also connected with the cloud end through the same account and the same password, the first terminal and the second terminal using the same account and the same password are bound by the cloud end to form a video conference room, and the first terminal and the second terminal which are bound with each other all perform information transmission in the room. Therefore, the first terminal and the second terminal can directly upload the screen-casting content through the wireless network, the trouble that the same video call software needs to be downloaded originally is replaced, and the screen-casting flexibility is improved.
In this embodiment, the screen casting content uploaded by the first terminal includes picture content and audio data, where the picture content may be a video call picture when a user performs a video call with another user by using its own first terminal, may be an operation picture generated by the user operating software or a document on the first terminal during the video call, and may also be all contents displayed on the current screen of the first terminal, and the user may upload an individual video call picture, an individual operation picture, or all contents displayed on the current screen of the first terminal according to its own needs. And when the picture content is uploaded, the audio data generated when the user carries out video or voice call through the first terminal is also uploaded to the cloud. In order to avoid the situation that the audio data and the picture content are not matched, the first terminal marks the picture content and the audio data which are acquired at the same time, and after the picture content and the audio data with the marked time are uploaded to the cloud, the second terminal acquires the picture content and the audio data which are marked at the same time in the cloud and plays the picture content and the audio data, so that the problem of large delay of the audio and the picture can be reduced. The generated picture content and the generated audio data can be divided and packaged, and the dividing rule can divide the picture content and the audio data at intervals of set time; the method can also be divided according to the size of the memory of the picture content, namely when the memory of the recorded picture content reaches a preset value, the audio data of a corresponding time period is divided according to the time corresponding to the recorded picture content, the divided picture content and the audio data are packaged, and time marking is carried out according to the dividing time or the starting time of obtaining the picture content or the audio data, and the time marking is synchronously uploaded to the cloud for storage.
And after obtaining the released content of the first terminal from the cloud end, the second terminal displays the released content of different first terminals in different display areas. In this embodiment, when the released contents of two first terminals need to be displayed, the second terminal is equally divided into two display areas, and one display area displays the released content of one first terminal; when the released contents of the three first terminals need to be displayed, the second terminal is equally divided into three display areas, and one display area displays the released contents of one first terminal.
And the picture content that shows first terminal and put in the display area at the second terminal, the pronunciation of the user video conversation in-process or the audio frequency of gathering first terminal broadcast form audio data simultaneously can be gathered to first terminal, upload audio data to the high in the clouds, the high in the clouds discerns audio data, and turn into the words in the audio data into text message, promptly the subtitle, show the subtitle in the corresponding display area at the second terminal, make the user speech content that every first terminal was gathered in the video conversation in-process of the accessible subtitle of viewer, avoid a plurality of first terminals to send the audio frequency simultaneously and lead to the viewer can't know everybody's words.
In order to ensure that the picture content and the text information correspond to each other, after the picture content and the audio data of the first terminal are obtained, the picture content and the audio data sent by the same first terminal and the text information obtained according to the audio data conversion are subjected to associated labeling, so that the text information and the picture content with the same associated identifier can be displayed in the same display area of the second terminal, and the condition that a caption is inconsistent with the picture content is avoided; meanwhile, after the plurality of first terminals acquire the audio data at the same time, the audio data acquired first can be played in an alternative mode, the loudest audio data can be played, all the acquired audio data can be played in a synchronous playing mode, all the acquired audio data can be played from different sound channels, and the playing mode of the audio data is the prior art and is not particularly limited.
Each display area of the second terminal displays the picture content launched by different first terminals, and when any user needs to amplify and explain the content displayed by the first terminal, a zoom instruction can be launched on the first terminal to change the size of the display area corresponding to the first terminal in the second terminal.
The method comprises the steps that a user can use fingers to perform zooming operation on a display screen of a first terminal of the user, the zooming operation at least needs two touch points, so that the user needs to press the screen of the first terminal with the two fingers to generate the two touch points, and the fingers are dragged outwards while being pressed to form a zooming gesture operation; or the fingers are pressed and moved inwards at the same time, so that the gesture operation of zooming out is formed. Therefore, in this embodiment, the method for the first terminal to issue the zoom instruction includes: firstly, judging whether any first terminal recognizes at least two contacts generated when a user presses a terminal screen by a finger, if so, judging whether the first terminal recognizes a contact moving path generated by dragging the terminal screen by the finger, and if so, generating a reduction instruction; if the contact point moving path is that the contact point moves towards the peripheral direction, an amplification command is generated.
After any first terminal generates a contact moving path, the first terminal calculates a scaling according to the contact moving path, the calculation mode can determine the starting position and the ending position of a contact according to the contact moving path, the linear distance is calculated according to the starting position and the ending position, the linear distance is compared with a preset line segment, the scaling of the contact moving path is calculated and fed back to a second terminal through a cloud end, the second terminal scales a display area corresponding to the first terminal on the second terminal according to the scaling, and when the display area is scaled, the display area is completely filled with the picture content of the first terminal, so that the effect of scaling the picture content of any first terminal on the second terminal is achieved.
When the second terminal scales the display area corresponding to the first terminal according to the scaling, if the size of the enlarged display area is larger than the screen size of the second terminal, the display area is adjusted to the screen size of the second terminal to play the picture content, and the full-screen effect is achieved; and if the size of the display area in the second terminal is reduced to be smaller than the preset size, playing the picture content according to the preset size to avoid undersize the picture content.
And a zooming key can also be arranged on the first terminal, and a user presses the zooming key on the first terminal to generate a corresponding zooming instruction. When any display area on the second terminal is zoomed, other display areas can be possibly shielded, therefore, the size recovery key is arranged on the first terminal, and a user can directly adjust the size of the zoomed display area to the size before zooming through the size recovery gesture; the size recovery gesture may be preset, may be a double-click on a screen or other gesture actions, and is not limited in this respect. In addition, the first terminal is also provided with a top-set key, and a user can control the picture content displayed by the first terminal to be always in the forefront position on the second terminal through a top-set gesture, so that other display areas can be prevented from being blocked in the zooming process; the top gesture motion may also be preset, and is not limited in this respect.
Example two
The present embodiment provides a screen projection apparatus, which may be a second terminal itself, or an intermediate apparatus connecting a first terminal and the second terminal, and includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the processor implements the wireless screen projection method for video communication in the first embodiment when executing the computer program; in addition, the present embodiment also provides a storage medium, on which a computer program is stored, and the computer program, when executed, implements the above-mentioned wireless screen projection method for video communication.
The apparatus and the storage medium in this embodiment are based on two aspects of the same inventive concept, and the method implementation process has been described in detail in the foregoing, so that those skilled in the art can clearly understand the structure and implementation process of the system in this embodiment according to the foregoing description, and for the sake of brevity of the description, details are not repeated here. The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A wireless screen projection method for video communication is characterized by comprising the following steps:
step S1: acquiring picture content and audio data uploaded by at least one first terminal, putting the picture content of the first terminal into a second terminal, and simultaneously playing the audio data; converting the audio data to obtain text information and displaying the text information on the second terminal;
step S2: and receiving a zooming instruction sent by any first terminal, and zooming the picture content corresponding to the first terminal on the second terminal according to the zooming instruction.
2. The wireless screen projection method for video communication according to claim 1, wherein the first terminal and the second terminal are both connected to a cloud terminal through a wireless network, and the first terminal marks the picture content and the audio data at the same time and uploads the picture content and the audio data to the cloud terminal; and the second terminal acquires the picture content and the audio data marked as the same moment in the cloud and plays the picture content and the audio data.
3. The wireless screen projection method for video communication according to claim 1, wherein when the screen contents uploaded by two or more first terminals are acquired in step S1, the second terminal is equally divided into a corresponding number of display areas, and the screen contents of different first terminals are displayed in different display areas.
4. The wireless screen projection method for video communication according to claim 3, wherein after the picture content and the audio data of the first terminal are obtained in step S1, the picture content and the audio data sent by the same first terminal and the text information obtained by converting the audio data are labeled in association, and the text information and the picture content with the same association label are displayed in the same display area of the second terminal.
5. The wireless screen projection method for video communication according to claim 1, wherein the method for the first terminal to issue the zoom command comprises:
judging whether any first terminal recognizes at least two contacts generated when a user presses a terminal screen by a finger, if so, judging whether the first terminal recognizes a contact moving path generated by dragging the terminal screen by the finger, and if so, generating a reduction instruction; if the contact point moving path is that the contact point moves towards the peripheral direction, an amplification command is generated.
6. The wireless screen projection method for video communication according to claim 5, wherein the scaling the screen content corresponding to the first terminal on the second terminal according to the scaling instruction comprises:
and any one first terminal generates a contact point moving path, calculates the scaling according to the contact point moving path and feeds the scaling back to a second terminal, and the second terminal scales the display area corresponding to the first terminal according to the scaling.
7. The wireless screen projection method for video communication according to claim 6, wherein when the second terminal scales the display area corresponding to the first terminal according to the scaling ratio, if the size of the enlarged display area is larger than the screen size of the second terminal, the display area is adjusted to the screen size of the second terminal for playing the picture content; and if the size of the display area in the second terminal is reduced to be smaller than the preset size, playing the picture content according to the preset size.
8. The wireless screen projection method for video communication according to claim 1, wherein the method for the first terminal to issue the zoom command comprises:
and when a zooming key on any first terminal is triggered, generating a corresponding zooming instruction.
9. A screen projection device, comprising a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to implement the wireless screen projection method for video communication according to any one of claims 1 to 8.
10. A storage medium having stored thereon a computer program which, when executed, implements the wireless screen projection method for video communication according to any one of claims 1 to 8.
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| CN115277650A (en) * | 2022-07-13 | 2022-11-01 | 深圳乐播科技有限公司 | Screen projection display control method, electronic equipment and related device |
| CN115277650B (en) * | 2022-07-13 | 2024-01-09 | 深圳乐播科技有限公司 | Screen-throwing display control method, electronic equipment and related device |
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