CN108419125A - The long-range control method of multimedia classroom mobile terminal - Google Patents
The long-range control method of multimedia classroom mobile terminal Download PDFInfo
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- CN108419125A CN108419125A CN201810189702.7A CN201810189702A CN108419125A CN 108419125 A CN108419125 A CN 108419125A CN 201810189702 A CN201810189702 A CN 201810189702A CN 108419125 A CN108419125 A CN 108419125A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44213—Monitoring of end-user related data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3438—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment monitoring of user actions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
- G06Q50/205—Education administration or guidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The present invention relates to online education technical fields, and in particular to the long-range control method of multimedia classroom mobile terminal；Include the following steps：It opens the APP formulated and starts the process for monitoring teacher side TCP connection in the ends Android；If the ends Android are used to monitor the process detection of teacher side TCP connection to having teacher side connection, the ends Android just to carry out video-capture operations；After video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and teacher side is sent data to by tcp；Teacher side carries out video compression after receiving video data and renders per frame image, then will be in the video playing to program after decompression；It solves in online education learning process, student is young, and ability of self control is poor, the problem of needing parent or teacher to carry out remote monitoring to the study of student.
Description
Technical field
The present invention relates to online education technical fields, and in particular to the long-range control method of multimedia classroom mobile terminal.
Background technology
In students in middle and primary schools educate, online education is quickly grown, but in online education learning process, student's age
Small, ability of self control is poor, and parent or teacher is needed to be monitored the study of student.Based on this demand, online education has a set of
Perfect telecreen monitoring method is necessary.
Invention content
The purpose of the present invention is to provide the long-range control methods of multimedia classroom mobile terminal, solve online education study
In the process, student is young, and ability of self control is poor, the problem of needing parent or teacher to carry out remote monitoring to the study of student.
In order to solve the above technical problems, the present invention uses following technical scheme：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
Further, in the detection process for the process that the ends Android are used to monitor teacher side TCP connection, if
Teacher side connection has been not detected in the process that the ends Android are used to monitor teacher side TCP connection, and the ends Android continue with
Detection.
Further, it refers to using Android MediaProjection that the ends Android, which carry out video-capture operations,
Sectional drawing is carried out as unit of frame to screen.
Further, described to compress the every frame data for acquiring video using multimedia video handling implement
H264 agreements in FFmpeg are compressed.
Further, the teacher side carries out video compression and uses multiple threads, specifically：Teacher side elder generation opening network
Data packet receiving thread, network packet receiving thread connect the specified port of Android device；Network data after successful connection
Packet receiving thread receives the frame data that Android device sends over, and then data addition data packet disappears if there is data reach
Queue is ceased, data are taken out with processing data packets thread from packet queue then and are put into decoder；The incoming number of decoder parsing
According to often parsing a frame just by image rendering to being played in program.
Further, the decoder rendering image acquiescence is hardware-accelerated using dxva2, when hardware-accelerated invalid, makes
Soft decoding is carried out with CUP.
Further, the teacher side is realized by the Adb debugging modules in android system to the ends Android
Screen control, specifically：The ports Adb of Android are connected to by the Adb orders in Android sdk first；Successful connection
Afterwards, if there is an event action at the interface of teacher side, by the ports Adb that have connected by the event data of operation display if teacher side
It is sent in android equipment in corresponding adb debugging port；The ends Android Adb debugging modules receive execution pair after order
The event action answered.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention will be in the long-range control of multimedia classroom mobile terminal
In method processed, the APP formulated is opened by the ends Android and starts the process for monitoring teacher side TCP connection, then
The ends Android are used to monitor the process detection of teacher side TCP connection to having teacher side connection, the ends Android just to carry out video and adopt
Collection operation is compressed the every frame data for acquiring video, and pass through tcp after then video-capture operations are completed at the ends Android
Teacher side is sent data to, teacher side carries out video compression after receiving video data and renders per frame image, then will decompression
In video playing to program afterwards, to achieve the purpose that the mobile terminals remote monitoring Android.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
The APP formulated is opened by the ends Android and starts the process for monitoring teacher side TCP connection, listens to religion
After the TCP connection of teacher end, the ends Android just carry out video-capture operations, and the every frame data for acquiring video are compressed, are passed through
Tcp sends data to teacher side, and teacher side carries out video compression by the video playing after decompression to journey after receiving video data
In sequence, to achieve the purpose that the mobile terminals remote monitoring Android.
Embodiment 2：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
In the detection process for the process that the ends Android are used to monitor teacher side TCP connection, if the ends Android are used for
Teacher side connection has been not detected in the process for monitoring teacher side TCP connection, and the ends Android continue with detection.The ends Android
The TCP connection of teacher side is carried out to continue detection so that when the teacher side Connection Time comparing lag, persistently detect
The ends Android can still detect the TCP connection of teacher side.
Embodiment 3：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
The ends Android carry out video-capture operations refer to using Android MediaProjection to screen with
Frame is that unit carries out sectional drawing.It is low that sectional drawing error rate is carried out with Android MediaProjection, before solving
There is the problem of blank screen in surfaceview sectional drawings.
Embodiment 4：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
It is described to compress the every frame data for acquiring video using in multimedia video handling implement FFmpeg
H264 agreements are compressed.H264/AVC can create a video compress more lower than pervious video compression standard bit rate
Standard, but can still ensure good video quality, so that compressed data transmission is faster more convenient.
Embodiment 5
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
The teacher side carries out video compression and uses multiple threads, specifically：Teacher side elder generation opening network data packet connects
Take-up journey, network packet receiving thread connect the specified port of Android device；Network packet receives line after successful connection
Journey receives the frame data that Android device sends over, and data packet message queue then is added in data if there is data reach, so
Data are taken out with processing data packets thread from packet queue afterwards and are put into decoder；The incoming data of decoder parsing, often parse
Go out a frame just by image rendering to being played in program.Multiple threads can call multiple threads to the data that receive simultaneously
It is handled, to achieve the purpose that promote data-handling efficiency.
Embodiment 6：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
The teacher side carries out video compression and uses multiple threads, specifically：Teacher side elder generation opening network data packet connects
Take-up journey, network packet receiving thread connect the specified port of Android device；Network packet receives line after successful connection
Journey receives the frame data that Android device sends over, and data packet message queue then is added in data if there is data reach, so
Data are taken out with processing data packets thread from packet queue afterwards and are put into decoder；The incoming data of decoder parsing, often parse
Go out a frame just by image rendering to being played in program.The decoder renders image acquiescence and uses dxva2 hardware-accelerated, hard
When part accelerates invalid, soft decoding is carried out using CUP.Using the hardware-accelerated effects and processing speed that can promote video of dxva2,
If when equipment dxva2 hardware incapabilities, being readily modified as carrying out soft decoding using CUP, increasing control method to the simultaneous of distinct device
Capacitive.
Embodiment 7：
The long-range control method of multimedia classroom mobile terminal, includes the following steps：
1) ends Android open the APP formulated and start the process for monitoring teacher side TCP connection；
If 2) ends Android are used to monitor the process detection of teacher side TCP connection to there is a teacher side connection, the ends Android just into
Row video-capture operations；
3) after video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and will be counted by tcp
According to being transmitted to teacher side；
4) teacher side carries out video compression after receiving video data and renders per frame image, then arrives the video playing after decompression
In program.
The teacher side realizes the screen control to the ends Android by the Adb debugging modules in android system,
Specifically：The ports Adb of Android are connected to by the Adb orders in Android sdk first；After successful connection, if religion
The interface of Shi Duan has event action, teacher side to be then sent to the event data of operation display by the ports Adb having connected
In android equipment in corresponding adb debugging port；The ends Android Adb debugging modules execute corresponding thing after receiving order
Part operates.Control of the teacher side to student side may be implemented in Adb debugging modules, to monitor student to the mobile terminals android
Operation, achievees the purpose that exercise supervision to student.
Claims (7)
1. the long-range control method of multimedia classroom mobile terminal, which is characterized in that include the following steps：
It opens the APP formulated and starts the process for monitoring teacher side TCP connection in the ends Android；
If the ends Android are used to monitor the process detection of teacher side TCP connection to having teacher side connection, the ends Android just to carry out
Video-capture operations；
After video-capture operations are completed at the ends Android, the every frame data for acquiring video are compressed, and by tcp by data
It is transmitted to teacher side；
Teacher side carries out video compression after receiving video data and renders per frame image, then by the video playing after decompression to journey
In sequence.
2. the long-range control method of multimedia classroom mobile terminal according to claim 1, it is characterised in that：It is described
In the detection process for the process that the ends Android are used to monitor teacher side TCP connection, if the ends Android are for monitoring teacher side TCP
Teacher side connection has been not detected in the process of connection, and the ends Android continue with detection.
3. the long-range control method of multimedia classroom mobile terminal according to claim 1, it is characterised in that：It is described
It refers to being carried out as unit of frame to screen using Android MediaProjection that the ends Android, which carry out video-capture operations,
Sectional drawing.
4. the long-range control method of multimedia classroom mobile terminal according to claim 1, it is characterised in that：It is described to acquire
Every frame data of video are compressed to be compressed using the h264 agreements in multimedia video handling implement FFmpeg.
5. the long-range control method of multimedia classroom mobile terminal according to claim 1, it is characterised in that：The teacher side
It carries out video compression and uses multiple threads, specifically：Teacher side elder generation opening network data packet receiving thread, network packet connect
Take-up journey connects the specified port of Android device；Network packet receiving thread receives Android device hair after successful connection
Data are then added data packet message queue if there is data reach, then use processing data packets thread by the frame data brought
Data are taken out from packet queue and are put into decoder；The incoming data of decoder parsing, often parse a frame just by image rendering
To being played in program.
6. the long-range control method of multimedia classroom mobile terminal according to claim 5, it is characterised in that：The decoder
It is hardware-accelerated using dxva2 to render image acquiescence, when hardware-accelerated invalid, soft decoding is carried out using CUP.
7. according to the long-range control method of multimedia classroom mobile terminal described in claim 1, it is characterised in that：The teacher side is logical
The Adb debugging modules crossed in android system realize the screen control to the ends Android, specifically：Pass through first
Adb orders in Android sdk are connected to the ports Adb of Android；After successful connection, if the interface of teacher side is busy
Part operates, and the event data of operation display is then sent in android equipment by the ports Adb having connected and is corresponded to by teacher side
Adb debugging port in；The ends Android Adb debugging modules execute corresponding event action after receiving order.
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Application publication date: 20180817 |