CN112584064B - Annotating method, system, equipment and storage medium for courseware - Google Patents

Annotating method, system, equipment and storage medium for courseware Download PDF

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Publication number
CN112584064B
CN112584064B CN201910941672.5A CN201910941672A CN112584064B CN 112584064 B CN112584064 B CN 112584064B CN 201910941672 A CN201910941672 A CN 201910941672A CN 112584064 B CN112584064 B CN 112584064B
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China
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main
video signal
display controller
controller
courseware
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CN201910941672.5A
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CN112584064A (en
Inventor
廖祖锐
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • 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
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

Abstract

The embodiment of the invention discloses a courseware annotating method, a system, equipment and a storage medium, wherein the method comprises the following steps: the controller determines courseware, generates a first main video signal and a second main video signal according to the courseware, the main display controller controls the main display equipment to play the first main video signal, the auxiliary display controller controls the auxiliary display equipment to play the second main video signal, the main display controller receives a first annotation operation acting on the main display equipment, the first annotation information is displayed for the courseware above the first main video signal according to the first annotation operation, the first annotation operation is transmitted to the auxiliary display controller, and the auxiliary display controller is used for displaying the first annotation information for the courseware above the second main video signal according to the first annotation operation. The auxiliary display device in the embodiment of the invention can synchronize the main display device to add comments to courseware, has strong flexibility, and can reduce the time delay of comments to courseware due to the reduced time delay of courseware display.

Description

Annotating method, system, equipment and storage medium for courseware
Technical Field
The embodiment of the invention relates to education technology, in particular to a courseware annotating method, system, equipment and storage medium.
Background
In some classrooms, a machine is used as a multimedia device in combination with a blackboard for teaching.
However, one machine has a limited screen size, and in a scene where a larger screen is required to display teaching contents, some classrooms use two machines placed side by side to extend the display area.
The two machines are only spliced together physically, the two machines still work independently, courseware is displayed independently, the courseware is annotated, the two machines need to communicate the courseware frequently in order to ensure that the courseware is displayed and annotated synchronously, the operation is complex, and time delay exists in the display of the courseware and the annotation of the courseware by the two machines.
Disclosure of Invention
The embodiment of the invention provides a courseware annotating method, system, equipment and storage medium, which are used for solving the problem that two machines independently display courseware and annotate the courseware with delay.
In a first aspect, an embodiment of the present invention provides an annotating method for courseware, where a primary display device is connected to a secondary display device, where a controller, a primary display controller, and a signal switcher are disposed in the primary display device, and a secondary display controller is disposed in the secondary display device, where the method includes:
the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware;
The controller transmits the first main video signal to the main display controller, and the main display controller is used for controlling the main display device to play the first main video signal;
the controller transmits the second main video signal to the signal switcher so as to transmit the second main video signal to the auxiliary display controller when the signal switcher receives an enabling signal of the main display controller, wherein the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal;
the main display controller receives a first annotation operation acting on the main display device;
the main display controller displays first annotation information for the courseware on the first main video signal according to the first annotation operation;
the main display controller transmits the first annotation operation to the auxiliary display controller, and the auxiliary display controller is used for displaying the first annotation information for the courseware on the second main video signal according to the first annotation operation.
In a second aspect, an embodiment of the present invention further provides a primary display device, where the primary display device is connected to a secondary display device, where a controller, a primary display controller, and a signal switcher are disposed in the primary display device, and where a secondary display controller is disposed in the secondary display device;
The controller is used for determining courseware, generating a first main video signal and a second main video signal according to the courseware, and transmitting the first main video signal to the main display controller;
the main display controller is used for controlling the main display device to play the first main video signal;
the controller is further configured to transmit the second main video signal to the signal switcher;
the main display controller is further configured to transmit an enable signal to the signal switcher to control the signal switcher to transmit the second main video signal to the auxiliary display controller, where the auxiliary display controller is configured to control the auxiliary display device to play the second main video signal;
the main display controller is further configured to receive a first annotation operation acting on the main display device, display first annotation information for the courseware on the first main video signal according to the first annotation operation, transmit the first annotation operation to the auxiliary display controller, and the auxiliary display controller is configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
In a third aspect, an embodiment of the present invention further provides an annotation system for courseware, where the system includes a main display device and an auxiliary display device connected to each other, where the main display device is provided with a controller, a main display controller, and a signal switcher, and the auxiliary display device is provided with an auxiliary display controller;
The controller is used for determining courseware, generating a first main video signal and a second main video signal according to the courseware, and transmitting the first main video signal to the main display controller;
the main display controller is used for controlling the main display device to play the first main video signal;
the controller is further configured to transmit the second main video signal to the signal switcher;
the main display controller is further configured to transmit an enable signal to the signal switcher to control the signal switcher to transmit the second main video signal to the auxiliary display controller;
the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal;
the main display controller is further configured to receive a first annotation operation acting on the main display device, display first annotation information on the courseware according to the first annotation operation, and transmit the first annotation operation to the auxiliary display controller;
the auxiliary display controller is further configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
In a fourth aspect, an embodiment of the present invention further provides a computer apparatus, including:
One or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the annotating method of courseware as described in the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, the computer program implementing the annotation method of courseware according to the first aspect when executed by a processor.
In this embodiment, the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware, on one hand, the first main video signal is transmitted to the main display controller, the main display controller is used for controlling the main display device to play the first main video signal, on the other hand, the controller transmits the second main video signal to the signal switcher, when receiving the enabling signal of the main display controller, the second main video signal is transmitted to the auxiliary display controller, the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal, the courseware is managed by the display in a unified way, the main display controller and the auxiliary display controller do not need to communicate frequently about the courseware, so that the simplicity of operation is greatly improved, the first main video signal and the second main video signal can be displayed, the real-time performance of the courseware displayed by the main display device and the auxiliary display device is ensured, and the time delay of the courseware is reduced.
In addition, the main display controller receives a first annotation operation acting on the main display device, displays first annotation information for courseware on the first main video signal according to the first annotation operation, and notifies the auxiliary display controller to display the first annotation information for courseware on the second main video signal according to the first annotation operation.
Drawings
Fig. 1 is a schematic structural diagram of a primary display device and a secondary display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a signal switch according to an embodiment of the invention;
FIG. 3 is a flowchart of a method for annotating courseware according to an embodiment of the present invention;
fig. 4 is a flowchart of a annotating method of courseware provided in the second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a main display device according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of an annotating system for courseware according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a main display device and a secondary display device according to an embodiment of the present invention.
In the present embodiment, the main display device 10 has a data port, the sub display device 20 has a data port, and a data line is accessible between the data port of the main display device 10 and the data port of the sub display device 20, thereby realizing connection of the main display device 10 and the sub display device 20.
The data ports of the main display device 10 and the data ports of the auxiliary display device 20 can be provided with various types of pins such as video pins, data pins, network pins and the like according to service requirements.
Among them, a video pin may be used to transmit a video signal, and an HDMI (High Definition MultimediaInterface, high-definition multimedia interface) signal is taken as an example of the video signal, a pair of video pins may be used to transmit an HDMI clock signal, a pair of video signals may be used to transmit an HDMI red signal, a pair of video signals may be used to transmit an HDMI green signal, and a pair of video signals may be used to transmit an HDMI blue signal.
The data pins may be used to transmit serial signals, such as USB (Universal Serial BUS ) 3.0 signals, USB2.0 signals, including camera, MIC (microphone), TOUCH (TOUCH operation) and other types of signals.
Network pins may be used to transmit network signals, such as gigabit network signals, for network communication.
In general, as shown in fig. 1, the main display device 10 has a screen (not shown), a controller 110, a main display controller 120, a signal switcher 130, and the like.
The controller 10 belongs to an operation module with higher performance.
For example, the controller 10 may be an Android (Android) module, i.e. an Android (Android) system may be installed, and components such as a CPU (Central Processing Unit ), GPU (Graphics Processing Unit, graphics processor), RAM (random access Memory ), ROM (Read-Only Memory) and the like are configured, for example, for the Android7.0 version, the CPU is dual core a72 and quad core a53, the GPU is Mali T860, the RAM is 4GB, the ROM is 32GB, and the like.
For another example, the controller 10 may be a PC (personal computer ) module configured with components such as a CPU, GPU, memory, hard disk, etc., for example, for a pluggable Intel Core series modular computer, the CPU is Intel Core i5/i7, the GPU is a Core display Intel HD Graphics, the memory is DDR4 8G/16G, and the hard disk is 128G/256G.
The main display controller 120 belongs to a display screen controller (Display Controllers), has lower operation performance, such as 811 SOC (System on Chip), and is responsible for receiving video signals from a computer serial port, placing the video signals into a frame memory, and generating serial display data and scanning control time sequences required by a screen according to a partition driving mode.
The signal switch 130 belongs to a switch, and may receive at least two video signals, which may be HDMI signals, and output one of the video signals.
Referring to fig. 2, a schematic diagram of a signal switch according to an embodiment of the invention is shown.
For the main display device shown in fig. 1, as shown in fig. 2, the signal switcher 130 has a first video input interface 133, a second video input interface 134, a control interface 132, and a video output interface 131.
The first video input interface 133 is connected to the controller 110, and is capable of receiving video signals transmitted by the controller 110.
The second video input interface 134 is connected to the main display controller 120, and can receive the video signal transmitted by the main display controller 120.
The control interface 132 is connected to the main display controller 120, and can receive the enable signal transmitted by the main display controller 120.
The video output interface 131 may expose a housing of the main display device 10, be connected to the sub display device 20 as pins in a data port, and may output a corresponding video signal to the sub display device 20 according to an enable signal.
For example, when the main display controller 120 transmits a high level signal as an enable signal to the signal switch 130, the signal switch 130 outputs a video signal transmitted by the controller 110.
When the main display controller 120 transmits a low level signal as an enable signal to the signal switch 130, the signal switch 130 outputs a video signal transmitted by the main display controller 120.
The video output interface 131 may expose a housing of the main display device 10, be connected to the sub display device 20 as pins in a data port, and may output a corresponding video signal to the sub display device 20 according to an enable signal.
For example, when the main display controller 120 transmits a signal of a first level as an enable signal to the signal switch 130, the signal switch 130 outputs a video signal transmitted by the controller 110.
When the main display controller 120 transmits the signal of the second level as the enable signal to the signal switch 130, the signal switch 130 outputs the video signal transmitted by the main display controller 120.
When the main display controller 120 transmits the signal of the third level as an enable signal to the signal switcher 130, the signal switcher 130 outputs the video signal transmitted by the signal distributor 140.
Wherein the first level is higher than the second level, and the second level is higher than the third level.
The signal distributor 140 belongs to a distributor, and may receive one path of video signal, which may be an HDMI signal, and project the path of video signal to at least two paths of video signals.
As shown in fig. 1, the sub display device 20 has a screen (not shown), a sub display controller 210.
The auxiliary display controller 210 belongs to a display screen controller (Display Controllers), has lower operation performance, such as 811 SOC, and is responsible for receiving video signals from a computer serial port, placing the video signals into a frame memory, and generating serial display data and scanning control time sequences required by a screen according to a partition driving mode.
The intelligent interaction panel is taken as an example of a main display device and an auxiliary display device, the hardware part of the intelligent interaction panel is composed of a display module, an intelligent processing system (comprising a display controller (such as a main display controller and an auxiliary display controller), or a controller, a display controller (such as a main display controller and an auxiliary display controller)) and the like, the intelligent processing system is combined by integral structural components, and meanwhile, the intelligent processing system is supported by a special software system, wherein the display module comprises a display screen and a backlight assembly, and the display screen comprises a transparent conductive layer, a liquid crystal layer and the like.
In the embodiments of the present disclosure, the display screen refers to a touch screen, and a touch panel, and is an inductive liquid crystal display device, and when a graphic button on the screen is touched, the haptic feedback system on the screen can drive various connection devices according to a preprogrammed program, and can be used to replace a mechanical button panel, and a vivid audio/video effect can be produced by using the liquid crystal display. Touch screens are distinguished from technical principles and can be divided into five basic categories; vector pressure sensing technology touch screens, resistive technology touch screens, capacitive technology touch screens, infrared technology touch screens, and surface acoustic wave technology touch screens. Touch screens can be divided into four categories according to the operating principle of the touch screen and the medium for transmitting information: resistive, capacitive, infrared, and surface acoustic wave.
When a user touches the screen with a finger or pen, the coordinates of the point are positioned, so that the control of the intelligent processing system is realized, and then different functional applications are realized along with the software built in the intelligent processing system.
The screen and the large screen mentioned in the embodiment of the invention all refer to the display screen of the intelligent interaction panel; the intelligent interaction panel displays data such as a certain interface and annotation information, and the display screen of the intelligent interaction panel displays the data such as the interface and the annotation information.
Example 1
Fig. 3 is a flowchart of a method for annotating courseware provided in an embodiment of the present invention, where the embodiment may be adapted to control, by a controller of a main display device, the main display device and the auxiliary display device to display courseware, and the auxiliary display device synchronizes the annotation of courseware by the main display device and the auxiliary display device, where the method may be implemented by the main display device and the auxiliary display device, and the main display device and the auxiliary display device may be implemented by software and/or hardware, and the main display device is provided with the controller, the main display device and the signal switcher, and the auxiliary display device is provided with the auxiliary display device, and the method specifically includes the following steps:
S301, the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware.
In this embodiment, the user may set the display of the controller to "copy the desktops of the primary display device and the secondary display device", and at this time, the controller may control the primary display device and the secondary display device to display the same courseware, so as to implement dual-screen cloning.
The courseware may refer to a course document which is manufactured according to the teaching requirements through links such as teaching target determination, teaching content and task analysis, teaching activity structure, interface design and the like, for example, PPT (PowerPoint), word (word processor application), PDF (Portable Document Format ), txt (text document), seeao (hewang), and the like.
In one example, the courseware includes a preparation phase, an activity phase, and a summary phase as shown.
The preparation phase is a phase for preparing an activity such as interest classification (competitive mode), grouping competition, and judgment of error.
In the preparation phase, parameters such as the type of activity, difficulty, number of participating users, time, etc. may be set.
For activities such as interesting classification (athletic mode), grouping competition, error judgment and the like, clicking a start control can expand the activity and enter an activity stage.
For other activities, the active phase is entered after entering the active page or resetting of the courseware.
In the activity stage, a control for selecting an element in the class listening terminal is activated to be in an operable state, at this time, the class listening terminal can operate the element related to the activity, for example, in the activities of classification of "region", "country", a card "Beijing", "New York", "United states", "Chinese", in the activity is dragged, the element for controlling the activity (such as controls for pause, continuation, reset, etc.), and the element unrelated to the activity (such as shape, mind map) are operated.
In the summary phase, the results of the activity, such as scores, answers, etc., may be displayed, at which point the teaching terminal may click on a control for resetting or viewing the answers.
In a specific implementation, the controller may determine a courseware, and use the courseware to generate a first main video signal and a second main video signal with the same content.
The first main video signal and the second main video signal belong to video signals, such as HDMI signals.
In one manner of generating the first main video signal and the second main video signal, a storage device is connected to the main display device, where the storage device is a device for storing data, such as a usb disk.
In this manner, the controller may read courseware from the storage device and store the courseware in a local cache.
At this time, the controller may call an application adapted to the format of the courseware, and open the courseware, and at this time, the courseware is displayed on a desktop, and the desktop data is converted into two paths of video signals, so as to generate a first main video signal and a second main video signal, where the first main video signal and the second main video signal are both used for displaying the courseware.
Of course, the above-mentioned manner of generating the first main video signal and the second main video signal is merely an example, and in implementing the present embodiment, other manners of generating the first main video signal and the second main video signal may be set according to actual situations, for example, downloading a courseware from the cloud and generating the first main video signal and the second main video signal according to the courseware, etc., which is not limited in the embodiments of the present invention. In addition to the above-described modes of generating the first main video signal and the second main video signal, those skilled in the art may also adopt other modes of generating the first main video signal and the second main video signal according to actual needs, and the present embodiment is not limited thereto.
S302, the controller transmits the first main video signal to the main display controller.
In this embodiment, the controller outputs the first main video signal to the main display controller, and the main display controller is configured to control the main display device to play the first main video signal.
Further, the main display controller receives the first main video signal from the controller, puts the first main video signal into the frame memory, generates serial display data and scanning control time sequence required by the screen aiming at the first main video signal in a partition driving mode, and plays the screen according to the serial display data and the scanning control time sequence, so that courseware is displayed on the screen.
S303, the controller transmits the second main video signal to the signal switcher so as to transmit the second main video signal to the auxiliary display controller when the signal switcher receives the enabling signal of the main display controller.
In this embodiment, the controller outputs the second main video signal to the signal switcher while the controller notifies the main display controller that the display at that time is set to "copy the desktops of the main display device and the sub display device", the main display controller generates the enable signal in response to the setting, and transmits the enable signal to the signal switcher.
The signal switcher responds to the enabling signal and outputs the video signal of the controller, namely, the second main video signal is output to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display equipment to play the second main video signal.
Further, the secondary display controller receives the second main video signal from the controller, puts the second main video signal into the frame memory, generates serial display data and scanning control time sequence required by the screen for the second main video signal according to the partition driving mode, and plays the screen according to the serial display data and the scanning control time sequence, so that courseware is displayed on the screen.
S304, the main display controller receives a first annotation operation acting on the main display device.
In this embodiment, the user may control the main display device to enter the annotation mode and the auxiliary display device to synchronously enter the annotation mode according to the demonstration situation of the actual courseware, and trigger the first annotation operation on the main display device, so that the first annotation information is displayed on the main display device and the first annotation information is synchronously displayed on the auxiliary display device.
The first annotating operation belongs to annotating, and the annotating can refer to criticizing and annotating in courseware during reading, and is used for helping a user to master contents in the courseware.
When the first annotation operation is triggered, the user may select an attribute of the first annotation information, for example, a color of the first annotation information, a line width of the first annotation information, and so on.
In addition, the main display device may also provide some unified graphics as the first annotation information, such as a line, a circle, an arrow, etc., which is not limited in this embodiment.
In a specific implementation, the user may operate by using a finger or a touch pen in a touch manner, so that the main display controller receives the first annotation operation. Or the user can also operate by using a key control mode through external equipment connected with the main display equipment so that the main display controller receives the first annotation operation. The external device includes, but is not limited to, a mouse and the like.
The embodiment is preferably illustrated by touch control, and it is to be understood that all the first annotating operations in the embodiment may be performed by touch control or key control, and are described by touch control.
In this example, the main display masks touch operations acting on the main display device from the controller.
The shielding may mean that the controller may receive the touch operation, but the main display informs the controller to ignore the touch operation, or may mean that the touch operation is not transmitted to the controller, which is not limited in this embodiment.
Further, in the main display device, the touch operation may be transmitted through a standard USB protocol, and a USB switch is disposed in the main display device, and the USB switch is respectively connected to the controller and the main display device, so that the received touch operation may be distributed to the controller and the main display device, and the main display device may send an enable signal to the USB switch, thereby controlling the USB switch to output the touch operation to the controller and/or the main display device.
It should be noted that, the main display controls the logic distributed by the touch operation, after the controller receives the touch operation, it does not determine whether to respond to the touch operation, but directly responds to the touch operation, if the touch operation is not transmitted to the controller, the logic superposition of the controller and the main display can be reduced, so that the coupling between the controller and the main display is reduced.
In this example, the main display receives a touch operation acting on the main display device as a first annotating operation in the annotating mode.
And S305, the main display controller displays first annotation information for the courseware on the first main video signal according to the first annotation operation.
In this embodiment, the main display may read the attribute of the first annotation information selected in the first annotation operation, for example, the color of the first annotation information, the line width of the first annotation information, and so on.
And drawing information with the attribute for courseware on the first main video signal as first annotation information.
If the first annotation operation is a touch operation, the information with the attribute can be drawn for the courseware on the first main video signal along the track of the touch operation as the first annotation information.
In addition, a graph having this attribute is drawn for courseware on top of the first main video signal as the first annotation information, such as a line, a circle, an arrow, and the like, to which the present embodiment is not limited.
In a specific implementation, the main display controller may freeze the first main video signal, which may mean that the first main video signal is kept received, where the first main video signal has multiple frames of image data, and the image data when the first annotation operation is triggered is maintained to be displayed on the screen, and other image data is ignored.
And the main display controller can inform the auxiliary display controller to freeze the second main video signal, wherein the freezing can mean that the second main video signal is kept to be received, the second main video signal has multi-frame image data, the image data when the first annotation operation is triggered when the screen is maintained to display, and other image data is ignored.
Since the first main video signal and the second main video signal both have multi-frame image data, different image data have differences in display, and by freezing the first main video signal and the second main video signal, smoothness can be maintained when the first annotation information is displayed.
Of course, since the content difference between different image data is not large, the first main video signal and the second main video signal may not be frozen, which is not limited in this embodiment.
The main display controller generates a first mask layer on top of the first main video signal, the first mask layer may be a window, and in the operating system, the window is located on top of the first main video signal.
And the main display controller displays the first annotation information for courseware in the first mask according to the first annotation operation, so that the first annotation information is displayed on the first main video signal.
If the main display device exits the annotation mode, the main display device indicates that the first annotation operation is finished, and when the first annotation operation is finished, the main display device releases the freezing of the first main video signal, namely releases the display of the image data when the first annotation operation is triggered, and continues to normally display other image data in the first main video signal; and the main display controller informs the auxiliary display controller to remove the freezing of the second main video signal, namely, the image data when the first annotation operation is triggered is removed from display, and other image data in the second main video signal is continuously and normally displayed.
S306, the main display controller transmits the first annotation operation to the auxiliary display controller.
In the main display device, the main display controller is connected with a data port, and the main display controller transmits the first annotation operation to the auxiliary display controller through the data port.
The auxiliary display controller is used for displaying first annotation information for courseware on the second main video signal according to the first annotation operation.
It should be noted that the main display controller and the auxiliary display controller may provide the same annotation service, so that, for the same first annotation operation, the first annotation information displayed on the first main video signal is the same as the second annotation information displayed on the second main video signal.
Further, the first annotation operation comprises data of touch points, wherein the data of touch points comprises one or more of the number of touch points, the state of the touch points, coordinates of the touch points and pressure values of the touch points.
The coordinates of the touch point include a horizontal axis coordinate x and a vertical axis coordinate y.
If the screen of the main display device and the screen of the auxiliary display device have a difference in resolution, the main display controller or the auxiliary display controller can map the coordinates of the touch point on the screen of the main display device to the coordinates of the touch point on the screen of the auxiliary display device, namely, the touch point on the screen of the main display device is linearly scaled and offset according to the size of the touch point so as to realize the matching of the touch position and the display position.
Further, the primary display controller or the secondary display controller may map the coordinates of the touch point on the screen of the primary display device to the coordinates of the unified screen, and map the coordinates of the screen to the coordinates of the screen of the secondary display device.
For example, the resolution of the screen of the primary display device is 1000×500, the resolution of the screen of the secondary display device is 500×500, when the screen of the primary display device displays a courseware, the display area of the primary display device is 500×500 in the middle of the screen, two black edges of 250×500 will appear on two sides of the screen, the vertex of the upper left corner of the touch display end is taken as the origin of coordinates, if the current touch point is at the coordinates of the touch display end (250,0), the actual clicking position corresponds to the (0, 0) point of the screen of the secondary display device.
If the screen of the main display device is the same as the screen of the sub display device in resolution, the coordinates of the touch point may be directly used.
In this embodiment, the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware, on one hand, the first main video signal is transmitted to the main display controller, the main display controller is used for controlling the main display device to play the first main video signal, on the other hand, the controller transmits the second main video signal to the signal switcher, when receiving the enabling signal of the main display controller, the second main video signal is transmitted to the auxiliary display controller, the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal, the courseware is managed by the display in a unified way, the main display controller and the auxiliary display controller do not need to communicate frequently about the courseware, so that the simplicity of operation is greatly improved, the first main video signal and the second main video signal can be displayed, the real-time performance of the courseware displayed by the main display device and the auxiliary display device is ensured, and the time delay of the courseware is reduced.
In addition, the main display controller receives a first annotation operation acting on the main display device, displays first annotation information for courseware on the first main video signal according to the first annotation operation, and notifies the auxiliary display controller to display the first annotation information for courseware on the second main video signal according to the first annotation operation.
Example two
Fig. 4 is a flowchart of a method for annotating courseware provided in a second embodiment of the present invention, where the method further increases processing operations of the main display controller and the synchronous auxiliary display controller on annotating courseware based on the foregoing embodiment, and the method specifically includes the following steps:
s401, the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware.
S402, the controller transmits the first main video signal to the main display controller.
The main display controller is used for controlling the main display device to play the first main video signal.
S403, the controller transmits the second main video signal to the signal switcher so as to transmit the second main video signal to the auxiliary display controller when the signal switcher receives the enabling signal of the main display controller.
The auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal.
S404, the auxiliary display controller receives a second annotation operation acting on the auxiliary display device.
In this embodiment, the user may control the auxiliary display device to enter the annotation mode and the main display device to synchronously enter the annotation mode according to the demonstration situation of the actual courseware, and trigger the second annotation operation on the auxiliary display device, so that the second annotation information is displayed on the auxiliary display device and the main display device synchronously displays the second annotation information.
The second annotating operation belongs to annotating, which can be criticizing and annotating in courseware during reading, and is used for helping a user to master the content in the courseware.
Upon triggering the second annotation operation, the user may select an attribute of the second annotation information, e.g., a color of the second annotation information, a line width of the second annotation information, and so on.
In addition, the secondary display device may also provide some unified graphics as the second annotation information, such as a line, a circle, an arrow, etc., which is not limited in this embodiment.
In a specific implementation, the user can operate by using a finger or a touch pen in a touch manner, so that the auxiliary display controller receives the second annotation operation. Or the user can also operate by using a keying mode through external equipment connected with the auxiliary display equipment so that the auxiliary display controller receives the second annotation operation. The external device includes, but is not limited to, a mouse and the like.
The embodiment is preferably illustrated by touch control, and it is to be understood that all the first annotating operations in the embodiment may be performed by touch control or key control, and are described by touch control.
In this example, the sub-display shields the controller from touch operations that are applied to the sub-display device.
The shielding may mean that the controller may receive the touch operation, but the secondary display informs the controller to ignore the touch operation, or may mean that the touch operation is not transmitted to the controller, which is not limited in this embodiment.
Further, in the secondary display device, the touch operation may be transmitted through a standard USB protocol, a USB switch is disposed in the secondary display device, the USB switch is respectively connected to the secondary display device and a data port of the secondary display device, the received touch operation may be distributed to the secondary display device, and the secondary display device may send an enable signal to the USB switch, so as to control the USB switch to output the touch operation to the controller and/or the secondary display device.
It should be noted that, the auxiliary display controls the logic distributed by the touch operation, after the controller receives the touch operation, it does not determine whether to respond to the touch operation, but directly responds to the touch operation, if the touch operation is not transmitted to the controller, the logic superposition of the controller and the auxiliary display can be reduced, so that the coupling between the controller and the auxiliary display is reduced.
In this example, the sub display receives a touch operation acting on the sub display device as a second annotating operation in the annotating mode.
And S405, the auxiliary display controller displays second annotation information for the courseware on the second main video signal according to the second annotation operation.
In this embodiment, the auxiliary display may read the attribute of the second annotation information selected in the second annotation operation, for example, the color of the second annotation information, the line width of the second annotation information, and so on.
And drawing information with the attribute for courseware on the second main video signal as second annotation information.
If the second annotation operation is a touch operation, the information with the attribute can be drawn for the courseware on the second main video signal along the track of the touch operation as the second annotation information.
In addition, a graph having this attribute is drawn for courseware on top of the second main video signal as second annotation information such as a line, a circle, an arrow, and the like, to which the present embodiment is not limited.
In a specific implementation, the secondary display controller may freeze the second main video signal, which may mean that the second main video signal is kept received, and the second main video signal has multiple frames of image data, and the image data when the second annotation operation is triggered by the maintenance display of the screen is ignored.
And the secondary display controller may notify the primary display controller to freeze the first main video signal, which may mean that the first main video signal is kept received, the first main video signal has multi-frame image data, the image data when the second annotation operation is triggered by maintaining the display of the screen, and other image data is ignored.
Since the first main video signal and the second main video signal both have multi-frame image data, different image data have differences in display, and by freezing the first main video signal and the second main video signal, smoothness can be maintained when the second annotation information is displayed.
Of course, since the content difference between different image data is not large, the first main video signal and the second main video signal may not be frozen, which is not limited in this embodiment.
The secondary display controller generates a second mask layer over the second primary video signal, which may be a window, the window being located over the second primary video signal in the operating system.
And the auxiliary display controller displays second annotation information for courseware in a second mask according to the second annotation operation, so that the second annotation information is displayed on the second main video signal.
If the auxiliary display device exits the annotation mode, the auxiliary display device indicates that the second annotation operation is finished, and when the second annotation operation is finished, the auxiliary display device releases the freezing of the second main video signal, namely releases the display of the image data when the second annotation operation is triggered, and continues to normally display other image data in the second main video signal; and the auxiliary display controller informs the main display controller of releasing the freezing of the first main video signal, namely releasing the image data when the display triggers the second annotation operation, and continuing to normally display other image data in the first main video signal.
S406, the auxiliary display controller transmits the second annotation operation to the main display controller.
In the auxiliary display device, the auxiliary display controller is connected with a data port, and the auxiliary display controller transmits the second annotation operation to the main display controller through the data port.
The main display controller is used for displaying second annotation information for courseware on the first main video signal according to the second annotation operation.
It should be noted that the main display controller and the auxiliary display controller may provide the same annotation service, so that, for the same second annotation operation, the second annotation information displayed on the first main video signal is the same as the second annotation information displayed on the second main video signal.
Further, the second annotation operation comprises data of touch points including one or more of a number of touch points, a state of the touch points, coordinates of the touch points, and a pressure value of the touch points.
The coordinates of the touch point include a horizontal axis coordinate x and a vertical axis coordinate y.
If the screen of the main display device and the screen of the auxiliary display device have a difference in resolution, the main display controller or the auxiliary display controller can map the coordinates of the touch point on the screen of the auxiliary display device to the coordinates of the screen of the main display device, namely, the touch point on the screen of the auxiliary display device is linearly scaled and offset according to the size of the touch point, so that the matching of the touch position and the display position is realized.
Further, the primary display controller or the secondary display controller may map the coordinates of the touch point on the screen of the secondary display device to the coordinates of the screen of the primary display device, and map the coordinates of the screen to the coordinates of the screen of the primary display device.
For example, the resolution of the screen of the secondary display device is 1000×500, the resolution of the screen of the primary display device is 500×500, when the screen of the secondary display device displays a courseware, the display area of the secondary display device is 500×500 in the middle of the screen, two black edges of 250×500 will appear on two sides of the screen, the vertex of the upper left corner of the touch display end is taken as the origin of coordinates, if the current touch point is at the coordinates of the touch display end (250,0), the actual clicking position corresponds to the (0, 0) point of the screen of the primary display device.
If the screen of the main display device is the same as the screen of the sub display device in resolution, the coordinates of the touch point may be directly used.
In this embodiment, the auxiliary display device receives a second annotation operation acting on the auxiliary display device, displays second annotation information for the courseware on the second main video signal according to the second annotation operation, and notifies the main display device to display the second annotation information for the courseware on the first main video signal according to the second annotation operation.
Example III
Fig. 5 is a schematic structural diagram of a main display device according to a third embodiment of the present invention, where the main display device is connected to a secondary display device, and a controller 501, a main display controller 502, and a signal switcher 503 are disposed in the main display device, and a secondary display controller is disposed in the secondary display device;
the controller 501 is configured to determine courseware, generate a first main video signal and a second main video signal according to the courseware, and transmit the first main video signal to the main display controller;
the main display controller 502 is configured to control the main display device to play the first main video signal;
the controller 501 is further configured to transmit the second main video signal to the signal switcher;
the main display controller 502 is further configured to transmit an enable signal to the signal switcher to control the signal switcher to transmit the second main video signal to the auxiliary display controller, where the auxiliary display controller is configured to control the auxiliary display device to play the second main video signal;
the main display controller 502 is further configured to receive a first annotation operation acting on the main display device, display first annotation information for the courseware on the first main video signal according to the first annotation operation, transmit the first annotation operation to the auxiliary display controller, and the auxiliary display controller is configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
In one embodiment of the present invention, the main display 502 is further configured to receive a touch operation acting on the main display device as a first annotating operation.
In one embodiment of the present invention, the main display 502 is further configured to:
generating a first mask layer over the first main video signal;
and displaying first annotation information for the courseware in the first mask according to the first annotation operation.
In one embodiment of the present invention, the main display 502 is further configured to:
freezing the first main video signal and notifying the secondary display controller to freeze the second main video signal;
and when the first annotating operation is finished, the freezing of the first main video signal is released, and the auxiliary display controller is informed to release the freezing of the second main video signal.
In one embodiment of the present invention, the main display 502 is further configured to shield the controller from touch operations applied to the main display device.
The main display device provided by the embodiment of the invention can execute the annotating method of courseware provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example IV
Fig. 6 is a schematic structural diagram of an annotation system for courseware according to a fourth embodiment of the present invention, where the annotation system includes a main display device 610 and a sub display device 620 connected to each other, a controller 611, a main display controller 612, and a signal switcher 613 are disposed in the main display device 610, and a sub display controller 621 is disposed in the sub display device 620;
the controller 611 is configured to determine courseware, generate a first main video signal and a second main video signal according to the courseware, and transmit the first main video signal to the main display controller;
the main display controller 612 is configured to control the main display device to play the first main video signal;
the controller 611 is further configured to transmit the second main video signal to the signal switcher;
the main display controller 612 is further configured to transmit an enable signal to the signal switch to control the signal switch to transmit the second main video signal to the auxiliary display controller;
the auxiliary display controller 621 is configured to control the auxiliary display device to play the second main video signal;
the main display controller 612 is further configured to receive a first annotation operation acting on the main display device, display first annotation information for the courseware on the first main video signal according to the first annotation operation, and transmit the first annotation operation to the auxiliary display controller;
The auxiliary display controller 621 is further configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
In one embodiment of the present invention, the main display 612 is further configured to receive a touch operation acting on the main display device as a first annotating operation.
In one embodiment of the present invention, the main display 612 is further configured to:
generating a first mask layer over the first main video signal;
and displaying first annotation information for the courseware in the first mask according to the first annotation operation.
In one embodiment of the present invention, the main display 612 is further configured to:
freezing the first main video signal and notifying the secondary display controller to freeze the second main video signal;
and when the first annotating operation is finished, the freezing of the first main video signal is released, and the auxiliary display controller is informed to release the freezing of the second main video signal.
In one embodiment of the present invention, the main display 612 is further configured to mask the controller from touch operations applied to the main display device.
In one embodiment of the present invention, the secondary display 621 is further configured to:
Receiving a second annotation operation acting on the secondary display device;
displaying second annotation information for the courseware on the second main video signal according to the second annotation operation;
and transmitting the second annotation operation to the main display controller, wherein the main display controller is used for displaying the second annotation information for the courseware on the first main video signal according to the second annotation operation.
In one embodiment of the present invention, the secondary display 621 is further configured to receive a touch operation acting on the secondary display device as a second annotating operation.
In one embodiment of the present invention, the secondary display 621 is further configured to:
generating a second mask layer over the second main video signal;
and displaying second annotation information for the courseware in the second mask according to the second annotation operation.
In one embodiment of the present invention, the secondary display 621 is further configured to:
freezing the second main video signal and notifying the main display controller to freeze the first main video signal;
and when the second annotating operation is finished, the freezing of the second main video signal is released, and the main display controller is informed to release the freezing of the first main video signal.
In one embodiment of the present invention, the secondary display 621 is further configured to shield the controller from touch operations applied to the secondary display device.
The courseware annotating system provided by the embodiment of the invention can execute the courseware annotating method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example five
Fig. 7 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention. As shown in fig. 7, the computer apparatus includes a processor 700, a memory 701, a communication module 702, an input device 703, and an output device 704; the number of processors 700 in the computer device may be one or more, one processor 700 being taken as an example in fig. 7; the processor 700, memory 701, communication module 702, input device 703 and output device 704 in the computer apparatus may be connected by a bus or other means, in fig. 7 by way of example.
The memory 701 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and a module, such as a module corresponding to the annotation method of a courseware in this embodiment (for example, the controller 501 and the main display controller 502 in the main display device shown in fig. 5, or the controller 611, the main display controller 612, and the sub display controller 621 in the annotation system of a courseware shown in fig. 6). The processor 700 executes various functional applications of the computer device and data processing, that is, implements the annotating method of courseware described above, by running software programs, instructions and modules stored in the memory 701.
The memory 701 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the computer device, etc. In addition, memory 701 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 701 may further include memory remotely located relative to processor 700, which may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
And the communication module 702 is used for establishing connection with the display screen and realizing data interaction with the display screen. The input device 703 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the computer apparatus.
The computer equipment provided by the embodiment of the invention can execute the annotating method of courseware provided by any embodiment of the invention, and the corresponding functions and beneficial effects are specific.
Example six
The sixth embodiment of the present invention further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for annotating courseware, a primary display device being connected to a secondary display device, a controller, a primary display controller, and a signal switcher being provided in the primary display device, and a secondary display controller being provided in the secondary display device, the method comprising:
the controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware;
the controller transmits the first main video signal to the main display controller, and the main display controller is used for controlling the main display device to play the first main video signal;
the controller transmits the second main video signal to the signal switcher so as to transmit the second main video signal to the auxiliary display controller when the signal switcher receives an enabling signal of the main display controller, wherein the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal;
the main display controller receives a first annotation operation acting on the main display device;
The main display controller displays first annotation information for the courseware on the first main video signal according to the first annotation operation;
the main display controller transmits the first annotation operation to the auxiliary display controller, and the auxiliary display controller is used for displaying the first annotation information for the courseware on the second main video signal according to the first annotation operation.
Of course, the computer readable storage medium provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform the related operations in the annotating method of courseware provided by any embodiment of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
It should be noted that, in the embodiment of the annotation system of the main display device and courseware, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, so long as the corresponding functions can be realized; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (14)

1. A method for annotating courseware, wherein a primary display device is connected to a secondary display device, a controller, a primary display controller, and a signal switcher are disposed in the primary display device, and a secondary display controller is disposed in the secondary display device, the method comprising:
The controller determines courseware, and generates a first main video signal and a second main video signal according to the courseware;
the controller transmits the first main video signal to the main display controller, and the main display controller is used for controlling the main display device to play the first main video signal;
the controller transmits the second main video signal to the signal switcher so as to transmit the second main video signal to the auxiliary display controller when the signal switcher receives an enabling signal of the main display controller, wherein the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal;
the main display controller receives a first annotation operation acting on the main display device;
the main display controller displays first annotation information for the courseware on the first main video signal according to the first annotation operation;
the main display controller transmits the first annotation operation to the auxiliary display controller, and the auxiliary display controller is used for displaying the first annotation information for the courseware on the second main video signal according to the first annotation operation.
2. The method of claim 1, wherein the master display receives a first annotation operation on the master display device, comprising:
And the main display controller receives touch operation acting on the main display equipment as a first annotating operation.
3. The method of claim 1, wherein the main display controller displays first annotation information for the courseware on top of the first main video signal according to the first annotation operation, comprising:
the main display controller generates a first mask layer above the first main video signal;
and the main display controller displays first annotation information for the courseware in the first mask according to the first annotation operation.
4. The method of claim 3, wherein the main display displays first annotation information for the courseware on top of the first main video signal according to the first annotation operation, further comprising:
the main display controller freezes the first main video signal, and notifies the auxiliary display controller to freeze the second main video signal;
and the main display controller releases the freezing of the first main video signal when the first annotating operation is finished, and informs the auxiliary display controller to release the freezing of the second main video signal.
5. The method of any one of claims 1-4, further comprising:
The main display controller shields the controller from touch operation acting on the main display device.
6. The method as recited in claim 1, further comprising:
the auxiliary display controller receives a second annotation operation acting on the auxiliary display device;
the auxiliary display controller displays second annotation information for the courseware on the second main video signal according to the second annotation operation;
the auxiliary display controller transmits the second annotation operation to the main display controller, and the main display controller is used for displaying the second annotation information for the courseware on the first main video signal according to the second annotation operation.
7. The method of claim 6, wherein the secondary display receives a second annotation operation on the secondary display device, comprising:
the secondary display receives touch operation acting on the secondary display device as a second annotation operation.
8. The method of claim 6, wherein the secondary display displaying second annotation information for the courseware on top of the second primary video signal in accordance with the second annotation operation, comprising:
The auxiliary display controller generates a second mask layer above the second main video signal;
and the auxiliary display controller displays second annotation information for the courseware in the second mask according to the second annotation operation.
9. The method of claim 8, wherein the secondary display displays second annotation information for the courseware on top of the second primary video signal in accordance with the second annotation operation, further comprising:
the auxiliary display controller freezes the second main video signal, and notifies the main display controller to freeze the first main video signal;
and the auxiliary display controller releases the freezing of the second main video signal when the second annotation operation is finished, and informs the main display controller to release the freezing of the first main video signal.
10. The method according to any one of claims 6-9, further comprising:
the secondary display controller shields the controller from touch operation acting on the secondary display device.
11. A main display device, characterized in that the main display device is connected with a pair of display devices, a controller, a main display controller and a signal switcher are arranged in the main display device, and a sub display controller is arranged in the sub display device;
The controller is used for determining courseware, generating a first main video signal and a second main video signal according to the courseware, and transmitting the first main video signal to the main display controller;
the main display controller is used for controlling the main display device to play the first main video signal;
the controller is further configured to transmit the second main video signal to the signal switcher;
the main display controller is further configured to transmit an enable signal to the signal switcher to control the signal switcher to transmit the second main video signal to the auxiliary display controller, where the auxiliary display controller is configured to control the auxiliary display device to play the second main video signal;
the main display controller is further configured to receive a first annotation operation acting on the main display device, display first annotation information for the courseware on the first main video signal according to the first annotation operation, transmit the first annotation operation to the auxiliary display controller, and the auxiliary display controller is configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
12. The annotating system of courseware is characterized by comprising a main display device and an auxiliary display device which are connected, wherein a controller, a main display controller and a signal switcher are arranged in the main display device, and an auxiliary display controller is arranged in the auxiliary display device;
The controller is used for determining courseware, generating a first main video signal and a second main video signal according to the courseware, and transmitting the first main video signal to the main display controller;
the main display controller is used for controlling the main display device to play the first main video signal;
the controller is further configured to transmit the second main video signal to the signal switcher;
the main display controller is further configured to transmit an enable signal to the signal switcher to control the signal switcher to transmit the second main video signal to the auxiliary display controller;
the auxiliary display controller is used for controlling the auxiliary display device to play the second main video signal;
the main display controller is further configured to receive a first annotation operation acting on the main display device, display first annotation information on the courseware according to the first annotation operation, and transmit the first annotation operation to the auxiliary display controller;
the auxiliary display controller is further configured to display the first annotation information for the courseware on the second main video signal according to the first annotation operation.
13. A computer device, the computer device comprising:
One or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the annotating method of courseware of any of claims 1-10.
14. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements a method of annotating a courseware according to any of claims 1-10.
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