CN111740968A - Control method and controller for grouping discussion training system - Google Patents

Control method and controller for grouping discussion training system Download PDF

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Publication number
CN111740968A
CN111740968A CN202010535648.4A CN202010535648A CN111740968A CN 111740968 A CN111740968 A CN 111740968A CN 202010535648 A CN202010535648 A CN 202010535648A CN 111740968 A CN111740968 A CN 111740968A
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mode
list
discussion
screen
student
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CN111740968B (en
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戴志军
张贺
吴思
熊月敏
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Shenzhen Bachao Technology Co ltd
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Shenzhen Bachao Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
    • G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/762—Media network packet handling at the source 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/764—Media network packet handling at the destination 

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

The invention discloses a control method, which comprises the following steps: step 1: displaying an interactive interface on a screen, wherein the interactive interface comprises a control mode list, a local terminal list and a student terminal list; step 2: acquiring a selected control mode in the control mode list, wherein the control mode list comprises a teaching mode and a discussion mode, if the selected control mode is the teaching mode, acquiring a selected first source device in the local end list, and if the selected control mode is the discussion mode, acquiring a selected student end system in the student end list; and step 3: and outputting the instruction for switching the teaching mode and the selected first source equipment or outputting the instruction for switching the discussion mode and the selected student end system. The control method is used for the grouping discussion training system, the control operation is simple, and the user experience is good. The invention also provides a controller.

Description

Control method and controller for grouping discussion training system
Technical Field
The invention relates to an IP audio/video transmission technology, which can be used in the education and training industry, in particular to a teaching scene needing grouping discussion.
Background
The requirements of the grouping discussion training system on functions are mainly as follows:
1. each student end is provided with a demonstration switcher which supports the input of a plurality of media signals and supports the local output of one path of media signal, and in order to facilitate comparison and discussion, each demonstration switcher can support a multi-picture function, and each student end can transmit the local media signal to the instructor end for display;
2. the teacher end is provided with a demonstration switcher which supports a plurality of media signal inputs, supports local outputs of at least 2 media signals, 1 can be connected with the projection of a large screen, and 1 can be connected with the output of a local display, so that the teacher can conveniently adjust local output pictures, and the teacher can transmit the local media signals to each student end for display;
3. the source devices are various and should support various access modes, and besides traditional wired access modes such as HDMI and VGA, the source devices also need to support BYOD access modes such as AirPlay and Miracast commonly used by the mobile devices.
Among the prior art, connect lecturer end and each student end through the matrix switch, in order to realize the bidirectional transmission between lecturer end and each student end, lecturer end and each student end all need be connected with the matrix switch through two transmission lines, the input of matrix switch is connected with the output of lecturer end or each student end to a transmission line, the output of matrix switch is connected with the input of lecturer end or each student end to another transmission line, the wiring is complicated, it is many to occupy the equipment port, be difficult to maintain, and media signal's switching is complicated, human-computer interaction's experience is not good.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a control method and a controller, which are used for a group discussion training system, and have the advantages of simple control operation and good user experience.
The technical problem to be solved by the invention is realized by the following technical scheme:
a control method for a group discussion training system, comprising the steps of:
step 1: displaying an interactive interface on a screen, wherein the interactive interface comprises a control mode list, a local terminal list and a student terminal list;
step 2: acquiring a selected control mode in the control mode list, wherein the control mode list comprises a teaching mode and a discussion mode, if the selected control mode is the teaching mode, acquiring a selected first source device in the local end list, and if the selected control mode is the discussion mode, acquiring the selected first source device in the local end list and/or a selected student end system in the student end list;
and step 3: and outputting the instruction for switching the teaching mode and the selected first source equipment or outputting the instruction for switching the discussion mode and the selected student end system.
Further, step 2 further comprises: and previewing and displaying the first media signal of the first source device and/or the second media signal of the student end system on the screen.
Further, when the preview display is performed, the method includes: and acquiring the first source equipment selected for previewing in the local end list and/or the student end system selected for previewing in the student end list, and then outputting a preview instruction and the first source equipment selected for previewing and/or the student end system selected for previewing outwards so as to receive a first media signal corresponding to the first source equipment selected and/or a second media signal corresponding to the student end system selected for previewing and displaying.
Further, the interactive interface further includes a layout list, and when performing preview display, the method further includes: and acquiring the selected picture layout device in the layout device list, and generating a corresponding picture layout device on the screen for layout of the preview picture.
Further, in step 2, if the selected control mode is the lecture mode, the local peer list is retained, and the student peer list is hidden, and if the selected control mode is the discussion mode, the local peer list and the student peer list are retained at the same time.
Further, the interactive interface further includes a synchronous mode list, and if the control mode selected in step 2 is the lecture mode or the discussion mode, in step 3, the method further includes, in case that the instruction for switching the lecture mode and the instruction for switching the selected first source device or discussion mode and the selected student front-end system are output to the outside, further including: and acquiring the selected synchronous mode in the synchronous mode list, wherein the synchronous mode list comprises a main screen synchronous mode and a whole synchronous mode.
Further, in step 2, if the selected control mode is the lecture mode, the master synchronization mode in the synchronization mode list is turned off, and the global synchronization mode in the synchronization mode list is turned on, and if the selected control mode is the discussion mode, the master synchronization mode and the global synchronization mode in the synchronization mode list are turned on at the same time.
Further, the control mode list further includes a blank screen mode, in step 2, if the selected control mode is the blank screen mode, the local side list is retained, the student side list is hidden, and in step 3, a switching instruction of the blank screen mode is output outwards.
Further, the interactive interface further includes a synchronization mode list, where the synchronization mode list includes a main screen synchronization mode and a global synchronization mode, and in step 2, if the selected control mode is the blank screen mode, the main screen synchronization mode and the global synchronization mode in the synchronization mode list are simultaneously turned off.
A controller for a group discussion training system comprises a screen, an input device, a memory and a processor, wherein the memory stores a computer program for the processor to execute, and when the processor executes the computer program, the control method is carried out.
The invention has the following beneficial effects: the control method and the controller are used for the group discussion training system, and can change the interactive interface according to different control modes selected by the instructor, so that the instructor can conveniently perform control operation, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram of a packet discussion training system according to the present invention;
FIG. 2 is a block diagram of the steps of the control method provided by the present invention;
fig. 3 is a schematic architecture diagram of an IP device provided by the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1, a packet discussion training system based on an IP network includes a lecturer end system, at least one student end system, and an ethernet switch, where the lecturer end system and each student end system are respectively connected to the ethernet switch to access the IP network through the ethernet switch for data transmission.
The teacher end system and the Ethernet switch and the student end systems and the Ethernet switches are connected through single network cables respectively.
The lecturer end system comprises main IP equipment, first display equipment and at least one first source equipment, wherein the first display equipment is connected with the main IP equipment, the main IP equipment is connected with the Ethernet switch, the first display equipment is used for displaying media signals received by the main IP equipment, and the first source equipment is used for outputting first media signals to the main IP equipment locally; the student end system comprises a slave IP device and a second display device and at least one second source device, wherein the second display device is connected with the slave IP device, the slave IP device is connected with the Ethernet switch, the second display device is used for displaying media signals received by the slave IP device connected with the second display device, and the second source device is used for outputting second media signals locally to the slave IP device connected with the second source device.
The first source device may be, but not limited to, a set-top box, a desktop PC, a game machine, and other local source devices, and is connected to a plug-and-play interface on the main IP device through a transmission line, and after the first source device is connected to an audio/video interface of the main IP device, the main IP device may immediately receive a first media signal locally output by the first source device through the audio/video interface; similarly, the second source device may be, but not limited to, a set-top box, a desktop PC, a game console, and other local source devices, and is connected to the plug-and-play interface on the slave IP device through a transmission line, and after the second source device accesses the audio/video interface of the slave IP device, the slave IP device may immediately receive, through the audio/video interface of the slave IP device, a second media signal locally output by the second source device.
The audio/video interface can be but is not limited to an HDMI interface, a VGA interface, a DP interface, a USB interface, a Type-c interface and other interfaces.
The first source device may also be, but not limited to, a local source device such as a mobile phone, a notebook computer, a tablet computer, a PDA, and the like, and is connected in a pairing manner with a main IP device accessing the same network in a BYOD manner, where the main IP device receives a first media signal locally output by the first source device through a built-in BYOD module; similarly, the second source device may also be, but not limited to, a local source device such as a mobile phone, a notebook computer, a tablet computer, a PDA, and the like, and is connected in a pairing manner with a slave IP device accessing to the same network in a BYOD manner, where the slave IP device receives, through a built-in BYOD module, a second media signal locally output by the second source device connected thereto.
The first display device may be, but is not limited to, a display, a television, a projector, and the like, and is connected to the video output interface on the main IP device through a transmission line, and the main IP device outputs a media signal to the first display device through the video output interface of the main IP device; likewise, the second display device may be, but is not limited to, a display, a television, a projector, etc. which is connected to the video output interface on the slave IP device through a transmission line, and the slave IP device outputs a media signal to the second display device connected thereto through the video output interface thereof.
The video output interface may be, but is not limited to, an HDMI interface, a VGA interface, a DP interface, and the like.
The group discussion training system further comprises a controller connected to the primary IP device of the instructor-side system, the controller also being considered as part of the instructor-side system; the instructor controls the group discussion training system to switch modes by operating on the controller.
The group discussion training system has a lecture mode, a discussion mode and an empty screen mode.
In the teaching mode, the lecturer end system can display the first media signal input locally and transmit the first media signal displayed by the lecturer end system to all the student end systems through the Ethernet switch so as to synchronously display the first media signal on all the student end systems.
Specifically, the lecturer selects a lecture mode and selects the first source device through the controller, and then the controller outputs a switching instruction of the lecture mode and the selected first source device to the master IP device.
After receiving the switching instruction of the teaching mode and the selected first source device, the master IP device displays a first media signal corresponding to the selected first source device on the first display device, codes the displayed first media signal into a first IP media stream, and then transmits the switching instruction of the teaching mode and the first IP media stream to all slave IP devices through the Ethernet switch; and after receiving the instruction for switching the teaching mode and the first IP media stream through the Ethernet switch, the slave IP equipment decodes and restores the first IP media stream into a first media signal, and then displays the first media signal on a second display device connected with the slave IP equipment.
Preferably, in the lecture mode, the student end system prohibits the second media signal locally input thereto from being displayed, that is, the second media signal locally output from the second source device connected thereto is not displayed on the second display device connected thereto by the slave IP device.
Specifically, the slave IP device may directly disconnect from the second source device, or maintain the connection with the second source device but turn off the local input function to prohibit receiving the second media signal locally output by the second source device connected thereto, or maintain the local input function but turn off the local switching function to prohibit switching the second media signal received from the second source device connected thereto to the second display device connected thereto.
In a discussion mode, the student end systems may display their locally input second media signals, and selected student end systems may transmit their displayed second media signals to the instructor end system through the ethernet switch for synchronous display on the instructor end system.
Specifically, the lecturer selects a discussion mode and a selected student end system through the controller, and then the controller outputs a switching instruction of the discussion mode and the selected student end system to the master IP device.
After receiving the switching instruction of the discussion mode and the selected student end system, the master IP device transmits the switching instruction of the discussion mode to all slave IP devices through the Ethernet switch; after receiving the switching instruction of the discussion mode through the Ethernet switch, the slave IP equipment displays a second media signal locally output by a second source equipment connected with the slave IP equipment on a second display equipment connected with the slave IP equipment, encodes the second media signal displayed on the second display equipment connected with the slave IP equipment corresponding to the selected student end system into a second IP media stream, and then transmits the second IP media stream to the master IP equipment through the Ethernet switch; and after receiving the second IP media stream through the Ethernet switch, the main IP equipment decodes and restores the second IP media stream into a second media signal, and then displays the second media signal on the first display equipment.
Preferably, in the discussion mode, the instructor-end system may transmit the second media signal displayed on the selected student-end system to other student-end systems through the ethernet switch to be displayed simultaneously on the other student-end systems.
Specifically, after receiving a second media signal corresponding to the selected student end system, the primary IP device sends a notification instruction to the selected student end system through the ethernet switch; after receiving the notification instruction, the selected student end system transmits the second IP media stream to slave IP equipment corresponding to other student end systems through the Ethernet switch; and after receiving the second IP media stream through the Ethernet switch, the slave IP equipment corresponding to other student end systems decodes the second IP media stream into a second media signal, and then displays the second media signal on second display equipment connected with the slave IP equipment.
The main IP device may support a multi-screen function, and in the lecture mode, when two or more first source devices are selected, or in the discussion mode, when a first media signal and a second media signal need to be displayed at the same time, the main IP device performs multi-screen synthesis on two or more corresponding media signals and then displays the synthesized signals on the first display device.
The slave IP device may support a multi-screen function, and in the discussion mode, when two or more second source devices connected to the slave IP device have two or more second source devices, or a first media signal input locally and a second media signal corresponding to a selected student end system need to be displayed simultaneously, the slave IP device performs multi-screen synthesis on two or more corresponding media signals and then displays the synthesized signals on a second display device connected to the slave IP device.
In the blank screen mode, the lecturer end system and all student end systems do not display or display a predetermined static picture, wherein the predetermined static picture may be a user interface or a screen saver picture. (video is not transmitted between the lecturer end system and each student end system)
Specifically, the lecturer selects the blank screen mode through the controller, and then the controller outputs a switching instruction of the blank screen mode to the main IP device.
After receiving the switching instruction of the idle screen mode, the master IP equipment does not display on the first display equipment or displays a preset static picture on the first display equipment, and transmits the switching instruction of the idle screen mode to all slave IP equipment through the Ethernet switch; and after receiving the switching instruction of the blank screen mode through the Ethernet switch, the slave IP equipment does not display on the second display equipment connected with the slave IP equipment or display a preset static picture on the second display equipment connected with the slave IP equipment.
Likewise, in the blank screen mode, the slave IP device may directly disconnect from the second source device, or maintain the connection with the second source device but turn off the local input function to disable receiving the second media signal locally output by the second source device connected thereto, or maintain the local input function but turn off the local switching function to disable switching the second media signal received from the second source device connected thereto to the second display device connected thereto.
The controller includes a screen to show the interactive interface of this system to and show corresponding first media signal and/or second media signal in real time when the lecturer operates, in order only to supply the lecturer individual to be in preview when operating on the controller (the screen of controller can normally show the first media signal of local input under the empty screen mode, and first display device does the main screen of lecturer's end system supplies all students to watch jointly, does not show or show predetermined static picture under the empty screen mode).
The controller can be operated by the instructor through at least one input device selected from a touch screen, a mouse, a keyboard and a control panel.
Example two
A control method is applied to a controller of the grouping discussion training system in the embodiment I.
As shown in fig. 2, the control method includes the steps of:
step 1: displaying an interactive interface on a screen, wherein the interactive interface comprises a control mode list, a synchronous mode list, a local end list, a student end list and a layout device list.
In this step 1, the control mode list, the synchronization mode list, the local side list, the student side list, and the layout device list are all located on the edge of the screen, in this embodiment, the control mode list and the synchronization mode list are located on the lower side edge of the screen, the student side list is located on the left side edge of the screen, the local side list is located on the right side edge of the screen, and the layout device list is located on the upper side edge of the screen.
The control mode list comprises various control modes for the lecturer to select, the synchronous mode list comprises various synchronous modes for the lecturer to select, the local end list comprises various first source devices for the lecturer to select, the student end list comprises various student end systems for the lecturer to select, and the layout device list comprises various picture layout devices for the lecturer to select.
Step 2: and acquiring a selected control mode in the control mode list, wherein the control mode list comprises a teaching mode, a discussion mode and a blank screen mode, if the selected control mode is the teaching mode, acquiring the selected first source equipment in the local terminal list, and if the selected control mode is the discussion mode, acquiring the selected first source equipment in the local terminal list and/or the selected student terminal system in the student terminal list.
When the lecture mode is selected, the lecturer end system may display a first media signal input locally thereto and transmit the displayed first media signal to all student end systems for synchronous display on all student end systems, and preferably, the student end systems prohibit display of a second media signal input locally thereto; when the discussion mode is selected, the student end systems can display the second media signals input locally and the selected student end systems can transmit the second media signals displayed by the selected student end systems to the lecturer end systems to be displayed synchronously on the lecturer end systems, the lecturer end systems can also display the first media signals input locally and the second media signals simultaneously on the screen, and preferably, the lecturer end systems can transmit the second media signals displayed on the selected student end systems to other student end systems to be displayed synchronously on the other student end systems; when the blank screen mode is selected, the lecturer end system and all student end systems do not display or display a preset static picture, but a first media signal locally input by the lecturer end system can be displayed on the screen for a lecturer to preview.
Preferably, in step 2, if the selected control mode is the lecture mode or the blank screen mode, the local peer list is retained, and the student peer list is hidden, and if the selected control mode is the discussion mode, the local peer list and the student peer list are retained at the same time.
In order to facilitate the lecturer to select the first source device or the student end system, preferably, the step 2 further includes: and previewing and displaying the first media signal of the first source device and/or the second media signal of the student end system on the screen.
When the preview display is performed, the method comprises the following steps: and acquiring the first source equipment selected for previewing in the local end list and/or the student end system selected for previewing in the student end list, and then outputting a preview instruction and the first source equipment selected for previewing and/or the student end system selected for previewing outwards so as to receive a first media signal corresponding to the first source equipment selected and/or a second media signal corresponding to the student end system selected for previewing and displaying.
The controller outputs a preview instruction and the first source device and/or the student end system selected to preview to the main IP device in the instructor end system, and the main IP device selectively transmits the corresponding first media signal and/or the corresponding second media signal to the controller to preview and display after receiving the preview instruction.
In addition, when the preview display is performed, the method further includes: and acquiring the selected picture layout device in the layout device list, and generating a corresponding picture layout device on the screen for layout of the preview picture.
The layout device list comprises a single-picture full-screen layout device, a main and auxiliary picture layout device and a multi-picture uniform layout device which can be selected by the instructor. When the single-picture full-screen layout device is selected, generating a single full-screen frame on the screen, wherein a selected first media signal or second media signal can be displayed on the screen in a single full-screen preview mode, when the main-sub picture layout device is selected, a main picture frame and at least one sub-picture frame are generated on the screen, the main picture frame occupies the largest display area, the sub-picture frame occupies the smaller display area, the selected first media signal or second media signal can be used as a main picture, the selected at least one first media signal and/or second media signal can be used as a sub-picture to display the main-sub picture on the screen in a preview mode, and when the multi-picture uniform layout device is selected, two or more picture frames occupying the same display area are generated on the screen, and the selected two or more first media signals and/or second media signals can be displayed on the screen for multi-picture uniform preview.
And the instructor drags the first source equipment in the local end list and/or the student end system in the student end list into the corresponding screen frame in the screen layout device to select the corresponding first source equipment and/or the corresponding student end system to perform preview display and the screen size and the screen position of the first source equipment and/or the corresponding student end system during the preview display.
And step 3: and outputting the switching instruction of the teaching mode and the selected first source equipment, or outputting the switching instruction of the discussion mode and the selected student end system, or outputting the switching instruction of the blank screen mode.
And after receiving the switching instruction, the group discussion training system executes corresponding steps and switches to a teaching mode, a discussion mode or a blank screen mode.
If the control mode selected in step 2 is the lecture mode or the discussion mode, step 3 further includes, before outputting the switching command to the outside: and acquiring the selected synchronous mode in the synchronous mode list, wherein the synchronous mode list comprises a main screen synchronous mode and a whole synchronous mode.
When the home screen synchronization mode is selected, a first media signal corresponding to a selected first source device or a second media signal corresponding to a selected student end system is displayed synchronously only on the instructor end system and not on the student end system (for the first media signal) or other student end systems (for the second media signal); when the all-synchronous mode is selected, a first media signal corresponding to the selected first source device or a second media signal corresponding to the selected student end system is synchronously displayed on the lecturer end system and all the student end systems at the same time.
In the teaching mode, a lecturer selects the overall synchronous mode to synchronously display a first media signal corresponding to the selected first source equipment on the lecturer end system and all student end systems at the same time; in a discussion mode, a lecturer selects the main screen synchronization mode to display a second media signal corresponding to the selected student end system on the lecturer end system, or selects the full synchronization mode to simultaneously display a second media signal corresponding to the selected student end system on the lecturer end system and all the student end systems; in the blank screen mode, the instructor need not select any synchronization mode.
That is, in the lecture mode, the first media signal corresponding to the selected first source device is not allowed to be displayed solely on the first display device of the lecturer end system, and the first media signal corresponding to the selected first source device must be simultaneously displayed synchronously on the first display device of the lecturer end system and the second display devices of all student end systems; in the discussion mode, allowing the second media signal corresponding to the selected student end system to be displayed solely on the first display device of the lecturer end system, and simultaneously allowing the second media signal corresponding to the selected student end system to be displayed synchronously on the first display device of the lecturer end system and the second display devices of all student end systems; and in the blank screen mode, the first display equipment of the instructor-side system and the second display equipment of all the student-side systems do not display or display a preset static picture.
Therefore, it is preferable that the main screen synchronization mode is turned off and the global synchronization mode is turned on if the control mode selected in step 2 is the lecture mode, that the main screen synchronization mode and the global synchronization mode are simultaneously turned on if the control mode selected in step 2 is the discussion mode, and that the main screen synchronization mode and the global synchronization mode are simultaneously turned off if the control mode selected in step 2 is the blank mode.
Preferably, the control method further includes: hiding the interactive interface when no operation is performed within a preset time threshold, and redisplaying the interactive interface when the operation is sensed.
A controller is applied to the grouping discussion training system in the embodiment I.
The controller includes a screen, an input device, a memory and a processor, wherein the memory stores a computer program for the processor to execute, and when the processor executes the computer program, the control method of the second embodiment is performed.
The input device may employ at least one of a touch screen, a mouse, a keyboard, and a control panel.
EXAMPLE III
An IP device with bidirectional coding and decoding functions is used as a master IP device or a slave IP device in the packet discussion training system in the embodiment I.
As shown in fig. 3, the IP apparatus includes:
a local receiving module for receiving a first media signal from a local source device (first source device or second source device);
an IP receiving module for receiving a second IP media stream from an IP network (ethernet switch);
the video decoding module is used for decoding the second IP media stream received by the IP receiving module into a second media signal;
a local sending module, configured to send the first media signal received by the local receiving module and/or the second media signal decoded by the video decoding module to a local display device (a first display device or a second display device) for display;
the video coding module is used for coding the first media signal received by the local receiving module into a first IP media stream;
the IP sending module is used for sending the first IP media stream coded by the video coding module to an IP network;
and the main control module is used for controlling the local receiving module, the IP receiving module, the video decoding module, the local sending module, the video coding module and the IP sending module.
Wherein the local receiving module comprises:
the BYOD module is used for receiving at least one path of first media signals in a BYOD mode;
the interface module is used for receiving at least one path of first media signals in an interface mode.
The IP equipment is internally provided with at least one audio/video interface which can immediately receive a first media signal output by the local source equipment through a transmission line after being connected to at least one local source equipment through the transmission line. The local source device adopting the interface transmission mode can be but is not limited to a set top box, a desktop PC, a game machine and other devices, and the audio/video interface can be but is not limited to an HDMI interface, a VGA interface, a DP interface, a USB interface, a Type-c interface and other interfaces.
The IP device is internally provided with a BYOD module which is connected with local source equipment accessed to the same network in a pairing mode in a BYOD mode and then receives a first media signal output by the local source equipment. The local source device adopting BYOD transmission may be, but is not limited to, a mobile phone, a notebook computer, a tablet computer, a PDA, and the like, and BYOD transmission preferably is, but is not limited to, transmission technologies such as Airplay technology of apple, or Miracast technology of microsoft.
The IP device further includes:
and the video synthesis module is used for synthesizing the first media signal received by the local receiving module and/or the second media signal obtained by decoding by the video decoding module into a multi-picture media signal according to the required picture layout, and the local sending module sends the multi-picture media signal to local display equipment and/or the video coding module codes the multi-picture media signal into a second IP media stream.
The IP device further includes:
and the instruction receiving module is used for receiving a control instruction (from the controller or the network switch) so that the main control module controls the local receiving module, the IP receiving module, the video decoding module, the local sending module, the video coding module and the IP sending module according to the control instruction.
The control instruction comprises a switching instruction of a teaching mode, a discussion mode and a blank screen mode, and related information such as a preview instruction, a selected local source device and/or a student end system.
When the main control module is in control, the following steps are also executed:
detecting the local receiving module, the IP receiving module, the video decoding module, the local sending module, the video coding module, the IP sending module and the video synthesizing module to obtain current OSD information about the running state of the equipment, and/or reading preset OSD information from a storage module;
generating an OSD menu in a video mode, wherein the OSD menu comprises the obtained current OSD information and/or the read preset OSD information;
and transmitting the generated OSD menu to the video synthesis module, and superposing the OSD menu on the multi-picture media signal by the video synthesis module.
Therefore, the IP device further includes:
the storage module is used for storing preset OSD information which is preset and related to the running state of the equipment.
In addition, when the main control module is in control, the following steps are also executed:
and sending a turn-off instruction aiming at least one path of first media signal to a BYOD module in the local receiving module according to a preset condition so that the BYOD module does not receive the corresponding first media signal any more.
In the above step, after receiving the shutdown instruction, the BYOD module shuts down reception of the corresponding first media signal and keeps reception of other first media signals.
Wherein the preset condition comprises at least one of the following:
1. the main control module detects that the multi-picture media signals formed by the video synthesis module do not include corresponding first media signals any more.
Under the preset condition 1, the main control module detects multi-picture media signals formed by the video synthesis module and each path of first media signals received by the BYOD module in real time, compares the multi-picture media signals with each path of first media signals, judges whether a certain path of first media signals is not included in the multi-picture media signals, and sends a turn-off instruction of the corresponding first media signals to the BYOD module if the certain path of first media signals is not included in the multi-picture media signals.
2. The main control module receives the input turn-off operation of the corresponding first media signal.
Under the preset condition 2, the IP device receives a shutdown instruction from the controller through the instruction receiving module, and if the main control module receives a shutdown operation of a lecturer on a certain path of first media signals received in a BYOD manner through the instruction receiving module, the main control module sends a shutdown instruction of corresponding first media signals to the soft BYOD module.
3. And the main control module receives a disconnection notice of the corresponding first media signal sent by the BYOD module.
Under the preset condition 3, the BYOD module detects each path of first media signal received by itself in real time or sends a response instruction to a local source device connected to the BYOD module at a preset time interval, if a path of first media signal is no longer received or a feedback instruction of a certain local source device is no longer received, the main control module is notified, and the main control module can judge that the corresponding first media signal is actively disconnected and then send a shutdown instruction of the corresponding first media signal to the BYOD module.
The local transmitting module can adopt but not limited to an HDMI interface, a VGA interface, a DP interface and other interfaces.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.

Claims (10)

1. A control method for a group discussion training system, comprising the steps of:
step 1: displaying an interactive interface on a screen, wherein the interactive interface comprises a control mode list, a local terminal list and a student terminal list;
step 2: acquiring a selected control mode in the control mode list, wherein the control mode list comprises a teaching mode and a discussion mode, if the selected control mode is the teaching mode, acquiring a selected first source device in the local end list, and if the selected control mode is the discussion mode, acquiring the selected first source device in the local end list and/or a selected student end system in the student end list;
and step 3: and outputting the instruction for switching the teaching mode and the selected first source equipment or outputting the instruction for switching the discussion mode and the selected student end system.
2. The control method for a packet discussion training system as claimed in claim 1, wherein the step 2 further comprises: and previewing and displaying the first media signal of the first source device and/or the second media signal of the student end system on the screen.
3. The control method for the group discussion training system as claimed in claim 2, wherein the preview display includes: and acquiring the first source equipment selected for previewing in the local end list and/or the student end system selected for previewing in the student end list, and then outputting a preview instruction and the first source equipment selected for previewing and/or the student end system selected for previewing outwards so as to receive a first media signal corresponding to the first source equipment selected and/or a second media signal corresponding to the student end system selected for previewing and displaying.
4. The control method for a group discussion training system as claimed in claim 2 or 3, wherein the interactive interface further includes a list of layout devices, and when performing the preview display, further includes: and acquiring the selected picture layout device in the layout device list, and generating a corresponding picture layout device on the screen for layout of the preview picture.
5. The control method for a group discussion training system according to any one of claims 1 to 3, wherein in step 2, if the selected control mode is the lecture mode, the local side list is retained, and the student side list is hidden, and if the selected control mode is the discussion mode, the local side list and the student side list are retained.
6. The control method for a group discussion training system as claimed in claim 1, wherein the interactive interface further includes a synchronous mode list, and if the selected control mode in step 2 is a lecture mode or a discussion mode, in step 3, before outputting the instruction for switching the lecture mode and the instruction for switching the selected first source device or discussion mode and the selected student end system, further includes: and acquiring the selected synchronous mode in the synchronous mode list, wherein the synchronous mode list comprises a main screen synchronous mode and a whole synchronous mode.
7. The control method for the packet discussion training system as claimed in claim 6, wherein in step 2, if the selected control mode is the lecture mode, the master synchronization mode in the synchronization mode list is turned off, the global synchronization mode in the synchronization mode list is turned on, and if the selected control mode is the discussion mode, the master synchronization mode and the global synchronization mode in the synchronization mode list are simultaneously turned on.
8. The control method for the group discussion training system as claimed in claim 1, wherein the control mode list further includes an empty screen mode, and in step 2, if the selected control mode is the empty screen mode, the local side list is retained while the student side list is hidden, and in step 3, an instruction for switching the empty screen mode is output.
9. The control method for the packet discussion training system as claimed in claim 8, wherein the interactive interface further includes a synchronization mode list including a main screen synchronization mode and a full synchronization mode, and in step 2, if the selected control mode is the blank screen mode, the main screen synchronization mode and the full synchronization mode in the synchronization mode list are turned off at the same time.
10. A controller for a group discussion training system, comprising a screen, an input device, a memory and a processor, said memory having stored therein a computer program for execution by said processor, characterized in that the control method of any one of claims 1-9 is performed when said processor executes the computer program.
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