CN110865784B - Screen projection processing method, device, equipment, storage medium and screen projection system - Google Patents

Screen projection processing method, device, equipment, storage medium and screen projection system Download PDF

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Publication number
CN110865784B
CN110865784B CN201911119980.6A CN201911119980A CN110865784B CN 110865784 B CN110865784 B CN 110865784B CN 201911119980 A CN201911119980 A CN 201911119980A CN 110865784 B CN110865784 B CN 110865784B
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China
Prior art keywords
terminal
projection
electronic ink
image
ink screen
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CN201911119980.6A
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CN110865784A (en
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钟锟
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Hefei Xunfei Reading And Writing Technology Co ltd
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Hefei Xunfei Reading And Writing Technology Co ltd
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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

Abstract

The application provides a screen projection processing method, device, equipment, storage medium and screen projection system, wherein the screen projection processing method comprises the following steps: acquiring an image to be projected of an electronic ink screen terminal; when the electronic ink screen terminal is confirmed to have no data receiving task, the image to be projected is sent to a projection terminal, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal. The processing process realizes simplex data transmission from the electronic ink screen terminal to the projection terminal, and under the condition that the performance of the electronic ink screen terminal is limited, the display image of the electronic ink screen terminal is projected to the projection terminal, namely, the electronic ink screen terminal and the projection terminal share the image content, thereby creating conditions for users to share and watch the display content of the electronic ink screen terminal.

Description

Screen projection processing method, device, equipment, storage medium and screen projection system
Technical Field
The application relates to the technical field of screen projection, in particular to a screen projection processing method, a device, equipment, a storage medium and a screen projection system.
Background
The electronic ink screen is a novel display screen, and has been widely used in terminal devices such as electronic notebooks, intelligent office books, electronic readers, etc. because of its low power consumption, display effect close to printing effect, and difficulty in producing visual fatigue.
In the process of using the electronic ink screen terminal by a user, the requirement that multiple people share and watch the display content of the electronic ink screen terminal is often met. However, the electronic ink screen terminal is usually a small display terminal, and the screen area of the electronic ink screen terminal is small, so that the electronic ink screen terminal is inconvenient for multiple people to share and watch. Therefore, how to facilitate users to share and watch the display content of the electronic ink screen terminal becomes a difficult problem to be solved.
Disclosure of Invention
Based on the problems, the application provides a screen projection processing method, device, equipment, storage medium and screen projection system, and by adopting the scheme, the image screen projection between the electronic ink screen terminal and the projection terminal can be realized, so that a user can conveniently share the display content of the electronic ink screen terminal.
A method of screen-casting, the method comprising:
acquiring an image to be projected of an electronic ink screen terminal;
when the electronic ink screen terminal is confirmed to have no data receiving task, the image to be projected is sent to a projection terminal, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal.
Optionally, the acquiring the to-be-projected image of the electronic ink screen terminal includes:
and carrying out screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and taking the set number of screenshot images as images to be projected.
Optionally, the performing screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images includes:
detecting whether the display content of the electronic ink screen terminal is updated or not;
when the display content of the electronic ink screen terminal is detected to be updated, screenshot processing is carried out on the display content of the electronic ink screen terminal, and a set number of screenshot images are obtained.
Optionally, the screenshot processing for the display content of the electronic ink screen terminal includes:
and intercepting the source data of the image displayed by the electronic ink screen terminal.
Optionally, the method further comprises:
in the process of sending the image to be projected to the projection terminal, detecting whether the data sent by the projection terminal need to be received or not;
if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal;
And after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal.
Optionally, the data sent by the projection terminal to the electronic ink screen terminal includes user operation information, where the user operation information includes information that a user operates display content of the projection terminal;
then, after receiving the data sent by the projection terminal, the method further includes:
and carrying out processing matched with the user operation information on the display content of the electronic ink screen terminal.
Optionally, the method further comprises:
and sending the audio data matched with the image to be projected to the projection terminal while sending the image to be projected to the projection terminal.
A screen projection processing apparatus comprising:
the image acquisition unit is used for acquiring an image to be projected of the electronic ink screen terminal;
the data sending unit is used for sending the image to be projected to a projection terminal when the electronic ink screen terminal is confirmed to have no data receiving task, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal.
Optionally, when the image obtaining unit obtains the to-be-projected image of the electronic ink screen terminal, the image obtaining unit is specifically configured to:
and carrying out screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and taking the set number of screenshot images as images to be projected.
Optionally, the performing screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images includes:
detecting whether the display content of the electronic ink screen terminal is updated or not;
when the display content of the electronic ink screen terminal is detected to be updated, screenshot processing is carried out on the display content of the electronic ink screen terminal, and a set number of screenshot images are obtained.
Optionally, the screenshot processing for the display content of the electronic ink screen terminal includes:
and intercepting the source data of the image displayed by the electronic ink screen terminal.
Optionally, the data sending unit is further configured to:
in the process of sending the image to be projected to the projection terminal, detecting whether the data sent by the projection terminal need to be received or not;
if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal;
And after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal.
Optionally, the data sent by the projection terminal to the electronic ink screen terminal includes user operation information, where the user operation information includes information that a user operates display content of the projection terminal;
the screen projection processing device further comprises:
and the image processing unit is used for carrying out the processing matched with the user operation information on the display content of the electronic ink screen terminal.
Optionally, the data sending unit is further configured to:
and sending the audio data matched with the image to be projected to the projection terminal while sending the image to be projected to the projection terminal.
A screen-casting processing apparatus comprising:
a memory and a processor;
the memory is connected with the processor and used for storing programs;
the processor is used for realizing the screen projection processing method by running the program in the memory.
A storage medium having a computer program stored thereon, which when executed by a processor, implements the above-described method of screen projection processing.
A screen projection system, comprising:
the electronic ink screen terminal is used for acquiring an image to be projected; when no data receiving task is confirmed, the image to be projected is sent to a projection terminal; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal;
and the projection terminal is used for receiving and displaying the image to be projected, which is sent by the electronic ink screen terminal.
Optionally, the projection terminal is further configured to: acquiring user operation information and sending the user operation information to the electronic ink screen terminal; the user operation information comprises information for operating the display content of the projection terminal by a user;
the electronic ink screen terminal is further used for:
receiving user operation information sent by the projection terminal;
and carrying out processing matched with the user operation information on the display content of the electronic ink screen terminal.
The screen projection processing method is applied to the electronic ink screen terminal, after the screen projection image to be projected is acquired, the electronic ink screen terminal judges whether a data receiving task exists or not, and when the fact that the data receiving task does not exist is confirmed, the electronic ink screen terminal sends the screen projection image to be projected to the projection terminal, so that the projection terminal displays the screen projection image to be projected. The processing process realizes simplex data transmission from the electronic ink screen terminal to the projection terminal, and under the condition that the performance of the electronic ink screen terminal is limited, the display image of the electronic ink screen terminal is projected to the projection terminal, namely, the electronic ink screen terminal and the projection terminal share the image content, thereby creating conditions for users to share and watch the display content of the electronic ink screen terminal.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a screen projection system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a screen projection processing method provided in an embodiment of the present application;
FIG. 3 is a flowchart of another screen-projection processing method according to an embodiment of the present disclosure;
fig. 4 is a schematic flow chart of implementing image projection by interaction between an electronic ink screen terminal and a projection terminal in a projection system provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a screen projection processing device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a screen projection processing device according to an embodiment of the present application.
Detailed Description
The technical scheme of the embodiment of the application is suitable for the application scene of sharing the display content of the electronic ink screen terminal, and by adopting the technical scheme of the embodiment of the application, the image can be projected from the electronic ink screen terminal to the projection terminal, so that the electronic ink screen terminal and the projection terminal share the image content, and therefore, users can conveniently share and watch the display content of the electronic ink screen terminal.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The embodiment of the application provides a screen projection processing method, and the screen projection processing method can be applied to the screen projection system shown in fig. 1. In the system, an electronic ink screen terminal 1 establishes a connection with a projection terminal 2 for data interaction. The connection between the electronic ink screen terminal 1 and the projection terminal 2 may be realized through a data line connection, or may be realized through a wireless connection, for example, connection may be established through bluetooth, wiFi, or the like.
The electronic ink screen terminal 1 refers to a terminal device equipped with an electronic ink screen, and may be, for example, an electronic notebook, an intelligent office notebook, an electronic reader, etc. The projection terminal 2 is a terminal device capable of receiving and displaying images transmitted from other electronic devices and transmitting image information displayed by itself to other electronic devices, and may be, for example, a computer, a projection screen, or another electronic ink screen terminal different from the electronic ink screen terminal 1 described above.
For example, the method for processing the screen projection provided by the application may be executed by the electronic ink screen terminal 1, so as to screen the image to be projected of the electronic ink screen terminal 1 to the projection terminal 2.
Referring to fig. 2, the screen projection processing method provided in the embodiment of the present application includes:
s201, acquiring an image to be projected of an electronic ink screen terminal;
the image to be projected by the electronic ink screen terminal refers to an image that the electronic ink screen terminal needs to send to a projection terminal for displaying, including but not limited to an image content currently displayed by the screen of the electronic ink screen terminal, or an image that is acquired by the electronic ink screen terminal but not displayed, for example, an image downloaded from a network, an image read from a memory of the electronic ink screen terminal, or an image sent by other received electronic devices.
It should be noted that, the image to be projected may be a single Zhang Huoshan frame image or a plurality of or multi-frame images. Under the condition of supporting the performance of the electronic ink screen terminal, the images to be projected are preferably a plurality of images.
In the embodiment of the present application, taking the above image to be projected as an image displayed by the electronic ink screen terminal as an example, a processing procedure of the projection processing method provided in the present application is described. When the image to be projected is an image acquired by the electronic ink screen terminal but not displayed, the projection processing process can be implemented by referring to the embodiment of the application.
S202, judging whether the electronic ink screen terminal has a data receiving task or not;
the data receiving task refers to a work task for receiving data, and in this embodiment of the present application, the data receiving task refers to a work task for receiving data sent by a projection terminal to an electronic ink screen terminal. When the projection terminal sends data to the electronic ink screen terminal, firstly, a data transmission request is sent to the electronic ink screen terminal, after the electronic ink screen terminal receives the data transmission request, a data receiving task is generated, and the electronic ink screen executes the data receiving task, so that the data sent by the projection terminal can be received.
When the electronic ink screen terminal acquires the image to be projected, firstly judging whether the electronic ink screen terminal has a data receiving task to be executed or being executed. For example, whether or not there is a data reception task may be confirmed by detecting whether or not a data transmission request transmitted by the projector terminal is received, or detecting whether or not data transmitted by the projector terminal is being received. If a data transmission request sent by the projection terminal is received or data sent by the projection terminal is being received, a data receiving task can be confirmed; if the data transmission request sent by the projection terminal is not received currently and the data sent by the projection terminal is not being received at the current moment, no data receiving task can be confirmed. Alternatively, the electronic ink terminal may also determine whether there is a data receiving task by identifying the type of work task being performed or to be performed.
If there is a data reception task, step S203 is executed to execute the data reception task.
After the execution of the data reception task ends, the flow returns to step S202, and whether there is a data reception task is determined again.
And executing step S204 until the electronic ink screen terminal is confirmed to have no data receiving task, and sending the image to be projected to a projection terminal so that the projection terminal displays the image to be projected.
According to the embodiment of the application, when the electronic ink screen terminal is confirmed to have no data receiving task, the electronic ink screen terminal sends the acquired image to be projected to the projection terminal so that the projection terminal displays the image to be projected, and therefore the display content of the electronic ink screen terminal is projected to the projection terminal, namely, the image content sharing between the projection terminal and the electronic ink screen terminal is realized.
Optionally, the sending of the image to be projected may be implemented by socket communication.
It can be appreciated that the above processing procedure in the embodiment of the present application implements image projection between the electronic ink screen terminal and the projection terminal.
In the prior art, a more mature projection scheme exists, but the existing projection scheme is a projection scheme of duplex transmission, namely, the electronic terminal and the projection terminal perform bidirectional data interaction, the projection terminal also transmits data to the electronic terminal when the data of the electronic terminal are transmitted to the projection terminal, the data projection is realized at two ends, and the real-time performance and the projection quality of the projection can be ensured.
Because the electronic ink screen itself has the limitation of display refresh frame rate and display processing performance, the electronic ink screen terminal itself cannot perform high-speed and multi-task data processing, including data cannot be received for display and image data cannot be collected for transmission at the same time, that is, duplex data transmission cannot be performed. Under the performance limit of the electronic ink screen terminal, if the electronic ink screen terminal applies the existing projection scheme, various processes such as data acquisition, data transmission, data reception and data display can be seriously collided, so that the display and projection of the electronic ink screen terminal cannot be normally performed, and therefore, the existing projection scheme cannot be applied to the electronic ink screen terminal.
Under the performance limit of the electronic ink screen terminal, the embodiment of the application provides a projection scheme applicable to the electronic ink screen terminal, the scheme is set that when the electronic ink screen terminal acquires an image to be projected, whether a data receiving task exists or not is detected, if the image to be projected is not received, the electronic ink screen terminal sends the image to be projected to the projection terminal, and the embodiment of the application sets that the image to be projected is sent to a transparent terminal only when the electronic ink screen terminal does not have the data receiving task, namely, the data can be sent to the projection terminal only when the electronic ink screen terminal does not receive the data sent by the projection terminal, so that the electronic ink screen terminal is prevented from simultaneously carrying out data sending and data receiving, and the order of data receiving and sending processing of the electronic ink screen terminal is ensured.
The setting of the embodiment of the application realizes simplex data transmission from the electronic ink screen terminal to the projection terminal, namely realizes a projection scheme based on simplex transmission. It will be appreciated that when the performance of the electronic ink screen terminal is improved enough for duplex data transmission and processing, the electronic ink screen terminal may send the image to be projected to the projection terminal immediately after the image to be projected is acquired, including while performing a data receiving task and/or without a data receiving task.
As can be seen from the above description, the screen projection processing method provided by the embodiment of the present application is applied to an electronic ink screen terminal, and after acquiring an image to be projected, the electronic ink screen terminal first determines whether there is a data receiving task, and when confirming that there is no data receiving task, the electronic ink screen terminal sends the image to be projected to a projection terminal, so that the projection terminal displays the image to be projected. The processing process realizes simplex data transmission from the electronic ink screen terminal to the projection terminal, and under the condition that the performance of the electronic ink screen terminal is limited, the display image of the electronic ink screen terminal is projected to the projection terminal, namely, the electronic ink screen terminal and the projection terminal share the image content, thereby creating conditions for users to share and watch the display content of the electronic ink screen terminal.
As an exemplary implementation manner, the foregoing acquiring the to-be-projected image of the electronic ink screen terminal includes:
and carrying out screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and taking the set number of screenshot images as images to be projected.
Specifically, when the electronic ink screen terminal acquires the image to be projected, the embodiment of the application sets that the screen display content of the electronic ink screen terminal is subjected to screenshot processing to obtain a screenshot image, and the obtained screenshot image is used as the image to be projected. Based on the screenshot processing and taking the screenshot image as an image to be projected, the screenshot image can be sent to a projection end by executing the subsequent projection processing of the electronic ink screen terminal, namely, the screen display content of the electronic ink screen terminal is sent to the projection end, so that the electronic ink screen terminal and the projection terminal display the same image content.
In addition, the embodiment of the application further sets that when the electronic ink screen terminal performs screenshot processing on the display content, specifically, continuously performs screenshot processing for a set number of times to obtain a set number of screenshot images, and takes the set number of screenshot images as images to be projected. It can be understood that the electronic ink screen terminal takes the screenshot images with the set quantity as images to be projected, and by executing the subsequent projection processing of the application, when the images to be projected are sent to the projection terminal each time, the screenshot images obtained by continuously performing the screenshot processing on the display content of the electronic ink screen terminal for multiple times are actually sent to the projection terminal simultaneously.
For example, when the electronic ink screen terminal acquires an image to be projected, the embodiment of the application sets that 10 screenshot images are obtained by continuously performing 10 screenshot processes on the screen display content of the electronic ink screen terminal, and the 10 screenshot images are sent to the projection terminal.
The electronic ink screen terminal sends a plurality of images to the projection terminal each time, so that the data sending efficiency of the electronic ink screen terminal can be improved. In addition, as the projection terminal can simultaneously receive a plurality of images when receiving the images sent by the electronic ink screen terminal each time, the projection terminal sequentially displays the images to achieve a dynamic display effect, thereby ensuring smooth projection between the electronic ink screen terminal and the projection terminal.
As a preferred implementation manner, the embodiment of the application sets that, when the electronic ink screen terminal performs screenshot processing on the screen display content, a high-definition image is specifically intercepted. The electronic ink screen terminal sends the intercepted high-definition screenshot image to the projection terminal as an image to be projected, so that the image display definition of the projection terminal can be ensured, and the user watching experience can be improved conveniently.
The above-mentioned set number may be determined according to the data transmission performance of the electronic ink screen terminal. In theory, the set number may be any number within the limit range of the number of images sent by the electronic ink screen terminal at a time.
In addition, the screenshot process may be performed on all display contents of the display screen of the electronic ink screen terminal, or may be performed on part of display contents of the display screen of the electronic ink screen terminal. Based on the options, the user can designate to project all the content displayed on the display screen of the electronic ink screen terminal to the projection terminal or designate to project part of the content displayed on the display screen of the electronic ink screen terminal to the projection terminal, so that the flexibility of projection of the electronic ink screen terminal is improved.
Further, in order to reduce the working pressure of the electronic ink screen terminal, the specific processing procedure for setting the electronic ink screen terminal to perform screenshot processing on the display content in the embodiment of the application includes:
detecting whether the display content of the electronic ink screen terminal is updated or not;
when the display content of the electronic ink screen terminal is detected to be updated, screenshot processing is carried out on the display content of the electronic ink screen terminal, and a set number of screenshot images are obtained.
Specifically, the embodiment of the application sets that when the display content of the electronic ink screen terminal is kept fixed and is not updated, the electronic ink screen terminal does not perform screenshot processing.
When the electronic ink screen terminal detects that the display content is updated, screenshot processing of the display content is executed, and a screen image to be projected, which is obtained by screenshot, is sent to the projection terminal, so that the display content change of the electronic ink screen terminal can be displayed on the projection terminal. The screenshot process is preferably a set number of screenshot processes, resulting in a set number of screenshot images.
When the display content of the electronic ink screen terminal is not updated within a certain period of time, the electronic ink screen terminal stops screenshot processing of the display content and then the subsequent image sending processing to be projected is also stopped, at this time, the projection terminal can not receive a new image to be projected sent by the electronic ink screen terminal, and the display content of the projection terminal and the display content of the electronic ink screen terminal are the same as fixed image content.
It can be understood that the above screenshot processing scheme is set in the embodiment of the application, so that the electronic ink screen terminal only performs screenshot on the updated image content and sends the screenshot to the projection terminal through subsequent processing, and no screenshot or sending is performed on the image content which is not updated, so that the data volume of the image data sent by the electronic ink screen terminal can be reduced under the condition of ensuring the projection effect, the screenshot processing workload of the electronic ink screen terminal is reduced, and the resource of the electronic ink screen terminal is saved.
In addition, as a preferred implementation manner, when the electronic ink screen terminal performs screenshot processing on the display content, specifically, the source data of the image displayed by the electronic ink screen terminal is intercepted.
The electronic ink screen can only display gray images, and no matter the image data source is color or gray images, the electronic ink screen is gray when displayed. However, the display screen of the projection terminal has stronger display performance, and the projection terminal can be a computer, a projection screen and the like, and can display images with colors and even high definition colors, so that better viewing experience can be brought.
In order to fully utilize the display performance of the projection terminal, the embodiment of the application sets that when the electronic ink screen terminal performs screenshot processing, the source data of the displayed image is intercepted to obtain the image source data, then the image source data is sent to the projection terminal, and the projection terminal can display the image source data according to the display setting.
For example, it is assumed that an image displayed by the electronic ink screen terminal is originally a color image, but the display effect of the image on the electronic ink screen terminal is a gray image because the electronic ink screen can only display a gray image. After the electronic ink screen terminal intercepts the source data of the displayed image and sends the source data to the projection terminal, the projection terminal decodes and displays the image source data, so that the original color of the image can be displayed, namely, the image is displayed in a color image form, a user can watch the image content which is the same as the display content of the electronic ink screen terminal through the projection terminal, and watch the color image content, so that the user watching experience can be improved.
As an exemplary implementation manner, the embodiment of the present application sets at least three processes for the electronic ink screen terminal, which are respectively used for executing the above-mentioned display content update detection, screenshot processing, and transmission processing of the image to be projected.
The first process is used for detecting whether the display content of the electronic ink screen terminal is updated or not, and when the update is detected, the first process triggers the second process to start to execute screenshot processing; and triggering a third process to send the screenshot image to the projection terminal after the second process executes screenshot processing to obtain the screenshot image. When the third process sends the screenshot image to the projection terminal, whether a data receiving task exists or not is judged, and when the fact that the data receiving task does not exist is confirmed, the screenshot image of the display content of the electronic ink screen terminal is sent to the projection terminal in a simplex transmission mode.
The multithreading arrangement can improve the processing performance of the electronic ink screen terminal and enable the processing process of the electronic ink screen terminal to be more orderly.
Further, referring to fig. 3, it is further configured that in the process that the electronic ink screen terminal sends the image to be projected to the projection terminal, step S305 is continuously executed to detect whether the data sent by the projection terminal needs to be received.
The electronic ink screen terminal can determine whether to receive the data sent by the projection terminal by detecting whether to receive the data transmission request sent by the projection terminal. If the electronic ink screen terminal receives the data transmission request sent by the projection terminal, the projection terminal can be determined to send data to the electronic ink screen terminal, and at the moment, the electronic ink screen terminal can be determined to receive the data sent by the projection terminal; if the data transmission request sent by the projection terminal is not received, it can be determined that the data sent by the projection terminal does not need to be received.
When the detection determines that the data sent by the projection terminal does not need to be received, the electronic ink screen terminal can continue to execute step S304, and sends an image to be projected to the projection terminal.
If the data transmitted by the projection terminal is detected to be received, executing step S306, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal;
the data sent by the projection terminal includes user operation information, specifically, information that a user operates the display content of the projection terminal.
Specifically, when the electronic ink screen terminal sends the image to be projected to the projection terminal, the projection terminal displays the image to be projected, and at this time, the user may operate the displayed image on the projection terminal, for example, mark, write, etc. on the displayed image of the projection terminal.
When the projection terminal senses the operation of a user on the display content, user operation information, specifically position coordinate (position coordinate on the display screen of the projection terminal) information of the user operation is collected, and the collected user operation information is sent to the electronic ink screen terminal.
Correspondingly, after receiving the data sent by the projection terminal, the electronic ink screen terminal executes step S307 to perform processing matching with the received user operation information on the display content of the electronic ink screen terminal.
For example, assuming that the user operation information is writing position coordinate information of the user on the projection screen, the electronic ink screen terminal maps the writing position coordinate on the projection screen to the position coordinate on the electronic ink screen after receiving the user operation information, and displays the writing trace at the position coordinate on the electronic ink screen determined by the mapping.
The processing procedure of the steps S306-S307 realizes that the projection terminal transmits data back to the electronic ink screen terminal. When the electronic ink screen terminal sends an image to the projection terminal and the projection terminal receives and displays the image, a user can operate on the display content of the projection terminal. At this time, the projection terminal collects user operation information and sends the collected user operation information to the electronic ink screen terminal, so that the electronic ink screen terminal also displays the user operation information. The process realizes the synchronization of the display content of the electronic ink screen terminal and the display content of the projection terminal, and ensures the projection effect.
S308, judging whether the data sent by the projection terminal is received completely or not;
if not, returning to the execution step S306, and continuing to receive the data sent by the projection terminal.
If so, step S309 is executed to continue to send the image to be projected to the projection terminal.
Specifically, if the data sent by the projection terminal is not finished, the electronic ink screen terminal continues to receive the data sent by the projection terminal and executes processing matched with user operation information contained in the received data; if the receiving of the data sent by the projection terminal is completed, the electronic ink screen terminal continues to send the image to be projected, which is not yet completed to be sent, to the projection terminal.
It can be understood through the description of the above processing procedure that the embodiment of the application sets the electronic ink screen terminal to perform data interaction with the projection terminal in a simplex transmission manner, so that the data receiving and transmitting of the electronic ink screen terminal are kept in order, and smooth execution of data transmission and receiving is ensured, namely smooth realization of the projection procedure is ensured.
Steps S301 to S304 in the method embodiment shown in fig. 3 correspond to steps S201 to S204 in the method embodiment shown in fig. 2, respectively, and specific processing content thereof may refer to the content of the method embodiment shown in fig. 2, which is not described herein.
In some cases, the image content displayed by the electronic ink terminal may have audio content matched with the image content, such as sound effects when the PPT presentation switches pages. Aiming at the situation, if the image to be projected sent by the electronic ink screen terminal has the matched audio data, when the electronic ink screen terminal sends the image to be projected to the projection terminal, the audio data matched with the image to be projected is synchronously sent to the projection terminal, so that the projection terminal can play the audio data.
The processing of the simultaneous transmission of the image and the audio data enables the image and the audio of the electronic ink screen terminal to be completely projected to the projection terminal for display and playing, and projection experience is further improved.
The specific processing procedure of the screen projection processing method provided by the application is mainly described from the angle of the electronic ink screen terminal. It can be understood that the screen projection processing process between the electronic ink screen terminal and the projection terminal is actually realized by mutually matching the electronic ink screen terminal and the projection terminal, so that the screen projection processing method provided by the application is also applicable to the projection terminal, and specific working contents of the projection terminal in the screen projection processing process can be referred to the related contents in the description of the embodiments of the application.
Based on the above scheme of realizing screen projection through interaction between the electronic ink screen terminal and the projection terminal, another embodiment of the present application further provides a screen projection system, and the composition structure of the screen projection system can be shown in fig. 1.
Specifically, the projection system comprises an electronic ink screen terminal 1 and a projection terminal 2.
The electronic ink screen terminal 1 and the projection terminal 2 establish data connection in a wired or wireless mode, and based on the data connection, the electronic ink screen terminal 1 and the projection terminal 2 can perform data interaction, so that a display image of the electronic ink screen terminal 1 is projected on the projection terminal 2 for display.
Referring to fig. 4, the specific processing contents of the electronic ink screen terminal 1 and the projection terminal 2, that is, the process of implementing image projection by data interaction between the electronic ink screen terminal 1 and the projection terminal 2, includes:
s401, the electronic ink screen terminal detects whether the display content is updated or not;
if it is detected that the display content of the electronic ink screen terminal is not updated, the step S401 is executed again, i.e. whether the display content of the electronic ink screen terminal is updated is continuously detected.
When the display content of the electronic ink screen terminal is detected to be updated, the electronic ink screen terminal executes step S402, performs screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and takes the set number of screenshot images as images to be projected.
S403, the electronic ink screen terminal judges whether a data receiving task exists.
The data receiving task comprises receiving data sent by the projection terminal. The data sent by the projection terminal comprises operation information, sent by the projection terminal, of a user on a display screen of the projection terminal.
If there is a data reception task, the process goes to step S407 to execute the data reception task.
If the data receiving task does not exist, the electronic ink screen terminal executes step S404 and sends the image to be projected to the projection terminal.
S405, the projection terminal receives and displays the image to be projected sent by the electronic ink screen terminal.
S406, the projection terminal acquires the user operation information and sends the acquired user operation information to the electronic ink screen terminal.
The user operation information includes information that a user operates the display content of the projection terminal.
S407, the electronic ink screen terminal receives user operation information sent by the projection terminal;
s408, the electronic ink screen terminal performs processing of matching the display content with the received user operation information.
In particular, the specific processing content of each processing step in the processing flow shown in fig. 4 may be referred to the description of the embodiments of the methods described above in the present application, and will not be repeated here.
It should be noted that fig. 4 only illustrates a general processing procedure when the electronic ink screen terminal 1 and the projection terminal 2 included in the screen projection system according to the embodiment of the present application perform screen projection. In the actual working process, the electronic ink screen terminal 1 and the projection terminal 2 in the screen projection system circularly and repeatedly execute the processing process shown in fig. 4, so that the display images of the electronic ink screen terminal 1 are continuously projected to the projection terminal 2, and the user operation information acquired by the projection terminal 2 is returned to the electronic ink screen terminal 1 for display.
For example, after the electronic ink screen terminal finishes executing the step S408, or in the process of executing the step S408, the electronic ink screen terminal returns to execute the step S401 to start a new round of image acquisition and screen projection processing, or returns to execute the step S403 to start detection and processing of a new data receiving task.
Alternatively, the user may not operate on the display screen of the projection terminal 2, and accordingly, the projection terminal 2 may not collect the user operation information, and may not send data to the electronic ink terminal 1. At this time, the processing in steps S406 to S408 may be skipped, and steps S401 to S405 may be executed only by the electronic ink screen terminal 1 and the projection terminal 2, so as to project the display image of the electronic ink screen terminal 1 onto the projection terminal 2.
Referring to fig. 4 and the description of the foregoing embodiments, it may be determined that the electronic ink screen terminal 1 in the screen projection system provided in the embodiment of the present application is mainly used for acquiring an image to be projected; when no data receiving task is confirmed, the image to be projected is sent to the projection terminal 2; receiving user operation information sent by the projection terminal 2, and performing processing matching with the received user operation information on the display content of the electronic ink screen terminal 1.
The projection terminal 2 is mainly used for receiving and displaying the image to be projected sent by the electronic ink screen terminal, acquiring user operation information and sending the acquired user operation information to the electronic ink screen terminal 1.
On the other hand, corresponding to the above-mentioned screen projection processing method, the embodiment of the present application further provides a screen projection processing device, as shown in fig. 5, where the device includes:
an image obtaining unit 100, configured to obtain an image to be projected from the electronic ink screen terminal;
a data sending unit 110, configured to send the image to be projected to a projection terminal when it is confirmed that the electronic ink screen terminal has no data receiving task, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal.
After the image obtaining unit 100 of the screen projection processing device provided in the embodiment of the present application obtains the image to be projected, the data sending unit 110 first determines whether there is a data receiving task, and when it is determined that there is no data receiving task, sends the image to be projected to the projection terminal, so that the projection terminal displays the image to be projected. The processing process realizes simplex data transmission from the electronic ink screen terminal to the projection terminal, and under the condition that the performance of the electronic ink screen terminal is limited, the display image of the electronic ink screen terminal is projected to the projection terminal, namely, the electronic ink screen terminal and the projection terminal share the image content, thereby creating conditions for users to share and watch the display content of the electronic ink screen terminal.
Optionally, when the image obtaining unit 100 obtains the image to be projected of the electronic ink screen terminal, the image obtaining unit is specifically configured to:
and carrying out screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and taking the set number of screenshot images as images to be projected.
The exemplary screenshot processing of the display content of the electronic ink screen terminal to obtain a set number of screenshot images includes:
Detecting whether the display content of the electronic ink screen terminal is updated or not;
when the display content of the electronic ink screen terminal is detected to be updated, screenshot processing is carried out on the display content of the electronic ink screen terminal, and a set number of screenshot images are obtained.
Preferably, the screenshot processing for the display content of the electronic ink screen terminal includes:
and intercepting the source data of the image displayed by the electronic ink screen terminal.
As an exemplary implementation, the data sending unit 110 is further configured to:
in the process of sending the image to be projected to the projection terminal, detecting whether the data sent by the projection terminal need to be received or not;
if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal;
and after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal.
The data sent by the projection terminal to the electronic ink screen terminal comprises user operation information, wherein the user operation information comprises information for operating the display content of the projection terminal by a user;
The screen projection processing device further comprises:
and the image processing unit is used for carrying out the processing matched with the user operation information on the display content of the electronic ink screen terminal.
Optionally, the data sending unit 110 is further configured to:
and sending the audio data matched with the image to be projected to the projection terminal while sending the image to be projected to the projection terminal.
Another embodiment of the present application further provides a screen projection processing device, as shown in fig. 6, where the device includes:
a memory 200 and a processor 210;
wherein the memory 200 is connected to the processor 210, and is used for storing a program;
the processor 210 is configured to implement each processing step of the screen-projection processing method disclosed in any one of the foregoing embodiments by executing a program stored in the memory 200.
Specifically, the screen projection processing device may further include: a bus, a communication interface 220, an input device 230, and an output device 240.
The processor 210, the memory 200, the communication interface 220, the input device 230, and the output device 240 are interconnected by a bus. Wherein:
a bus may comprise a path that communicates information between components of a computer system.
Processor 210 may be a general-purpose processor such as a general-purpose Central Processing Unit (CPU), microprocessor, etc., or may be an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in accordance with aspects of the present invention. But may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
Processor 210 may include a main processor, and may also include a baseband chip, modem, and the like.
The memory 200 stores programs for implementing the technical scheme of the present invention, and may also store an operating system and other key services. In particular, the program may include program code including computer-operating instructions. More specifically, the memory 200 may include read-only memory (ROM), other types of static storage devices that may store static information and instructions, random access memory (random access memory, RAM), other types of dynamic storage devices that may store information and instructions, disk storage, flash, and the like.
The input device 230 may include means for receiving data and information entered by a user, such as a keyboard, mouse, camera, scanner, light pen, voice input device, touch screen, pedometer, or gravity sensor, among others.
Output device 240 may include means, such as a display screen, printer, speakers, etc., that allow information to be output to a user.
The communication interface 220 may include devices using any transceiver or the like for communicating with other devices or communication networks, such as ethernet, radio Access Network (RAN), wireless Local Area Network (WLAN), etc.
The processor 2102 executes programs stored in the memory 200 and invokes other devices, which may be used to implement the steps of the screen projection processing method provided in the embodiments of the present application.
Another embodiment of the present application further provides a storage medium, where a computer program is stored, where the computer program is executed by a processor to implement each step of the screen projection processing method provided in any one of the foregoing embodiments.
Specifically, the above-mentioned screen projection processing device, specific working contents of each part of the screen projection processing device, specific working contents of each component of the screen projection system, and specific working contents of the computer program in the storage medium when being run by the processor can be all described with reference to the above-mentioned embodiment of the screen projection processing method, and the description of the embodiment of the present application will not be repeated.
For the foregoing method embodiments, for simplicity of explanation, the methodologies are shown as a series of acts, but one of ordinary skill in the art will appreciate that the present application is not limited by the order of acts described, as some acts may, in accordance with the present application, occur in other orders or concurrently. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.
The steps in the methods of the embodiments of the present application may be sequentially adjusted, combined, and pruned according to actual needs.
The modules and sub-modules in the device and the terminal of the embodiments of the present application may be combined, divided, and deleted according to actual needs.
In the embodiments provided in the present application, it should be understood that the disclosed terminal, apparatus and method may be implemented in other manners. For example, the above-described terminal embodiments are merely illustrative, and for example, the division of modules or sub-modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules or sub-modules illustrated as separate components may or may not be physically separate, and components that are modules or sub-modules may or may not be physical modules or sub-modules, i.e., may be located in one place, or may be distributed over multiple network modules or sub-modules. Some or all of the modules or sub-modules may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional module or sub-module in each embodiment of the present application may be integrated in one processing module, or each module or sub-module may exist alone physically, or two or more modules or sub-modules may be integrated in one module. The integrated modules or sub-modules may be implemented in hardware or in software functional modules or sub-modules.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software unit executed by a processor, or in a combination of the two. The software elements may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A method of screen projection processing, the method comprising:
acquiring an image to be projected of an electronic ink screen terminal; the image to be projected is displayed by the electronic ink screen terminal;
when the electronic ink screen terminal is confirmed to have no data receiving task, the image to be projected is sent to a projection terminal, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal;
in the process of sending the image to be projected to the projection terminal, detecting whether the data sent by the projection terminal need to be received or not;
if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal;
and after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal.
2. The method of claim 1, wherein the acquiring the to-be-screened image of the electronic ink screen terminal comprises:
and carrying out screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images, and taking the set number of screenshot images as images to be projected.
3. The method of claim 2, wherein the performing screenshot processing on the display content of the electronic ink screen terminal to obtain a set number of screenshot images includes:
detecting whether the display content of the electronic ink screen terminal is updated or not;
when the display content of the electronic ink screen terminal is detected to be updated, screenshot processing is carried out on the display content of the electronic ink screen terminal, and a set number of screenshot images are obtained.
4. The method of claim 3, wherein the screenshot of the display content of the electronic ink terminal comprises:
and intercepting the source data of the image displayed by the electronic ink screen terminal.
5. The method of claim 1, wherein the data transmitted from the projection terminal to the electronic ink terminal includes user operation information including information for a user to operate the display content of the projection terminal;
then, after receiving the data sent by the projection terminal, the method further includes:
and carrying out processing matched with the user operation information on the display content of the electronic ink screen terminal.
6. The method according to claim 1, wherein the method further comprises:
and sending the audio data matched with the image to be projected to the projection terminal while sending the image to be projected to the projection terminal.
7. A screen projection processing apparatus, comprising:
the image acquisition unit is used for acquiring an image to be projected of the electronic ink screen terminal; the image to be projected is displayed by the electronic ink screen terminal;
the data sending unit is used for sending the image to be projected to a projection terminal when the electronic ink screen terminal is confirmed to have no data receiving task, so that the projection terminal displays the image to be projected; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal;
the data transmitting unit is further used for detecting whether the data transmitted by the projection terminal need to be received or not in the process of transmitting the image to be projected to the projection terminal; if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal; and after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal.
8. A screen projection processing apparatus, comprising:
a memory and a processor;
the memory is connected with the processor and used for storing programs;
the processor is configured to implement the screen-projection processing method according to any one of claims 1 to 6 by running a program in the memory.
9. A storage medium having stored thereon a computer program which, when executed by a processor, implements the screen projection processing method according to any one of claims 1 to 6.
10. A screen projection system, comprising:
the electronic ink screen terminal is used for acquiring an image to be projected; the image to be projected is displayed by the electronic ink screen terminal; when no data receiving task is confirmed, the image to be projected is sent to a projection terminal; the data receiving task comprises receiving data sent by the projection terminal to the electronic ink screen terminal; in the process of sending the image to be projected to the projection terminal, detecting whether the data sent by the projection terminal need to be received or not; if the data transmitted by the projection terminal is detected to be required to be received, suspending the transmission of the image to be projected to the projection terminal, and receiving the data transmitted by the projection terminal; after the completion of receiving the data sent by the projection terminal is determined, continuing to send the image to be projected to the projection terminal;
And the projection terminal is used for receiving and displaying the image to be projected, which is sent by the electronic ink screen terminal.
11. The projection system of claim 10, wherein the projection terminal is further configured to: acquiring user operation information and sending the user operation information to the electronic ink screen terminal; the user operation information comprises information for operating the display content of the projection terminal by a user;
the electronic ink screen terminal is further used for:
receiving user operation information sent by the projection terminal;
and carrying out processing matched with the user operation information on the display content of the electronic ink screen terminal.
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