CN112580313B

CN112580313B - Annotating method, system, equipment and storage medium for courseware

Info

Publication number: CN112580313B
Application number: CN201910941663.6A
Authority: CN
Inventors: 陈俊伟; 周桂安
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2023-06-20
Anticipated expiration: 2039-09-30
Also published as: CN112580313A

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 main display controller receives an external video signal transmitted by the electronic equipment; the main display controller converts the external video signal to obtain a first sub video signal which is matched with a main screen; the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to the main screen for playing; the first video signal is also used for converting the first video signal into an external video signal; the main display controller controls the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal; the main display controller receives a first annotation operation acting on the main display device; and the main display controller displays first annotation information for courseware on the first video signal according to the first annotation operation. The embodiment of the invention can independently annotate courseware in the main display equipment, and has strong flexibility.

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 independently, when other courseware is externally connected, the two machines are required to be connected into different electronic equipment independently, the courseware is provided by the electronic equipment, so that the courseware is annotated in the different machines, the operation is complex, and the two machines are caused to display the courseware with time delay and annotate the courseware with time delay.

Disclosure of Invention

The embodiment of the invention provides a courseware annotating method, system, equipment and storage medium, which are used for solving the problems that two machines are respectively and independently connected with different electronic equipment to display courseware, and the two machines are used for independently displaying the courseware and are delayed in annotating the courseware.

In a first aspect, an embodiment of the present invention provides a method for annotating courseware, where a main display device is connected to a pair of display devices and an electronic device, where a controller, a main display controller, a signal switcher, a signal converter, and a main screen are disposed in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device, and the method comprises the following steps:

The main display controller receives an external video signal transmitted by the electronic equipment, and the external video signal is used for displaying courseware;

the main display controller converts the external video signal to obtain a first sub video signal which is matched with the main screen, wherein the first sub video signal is a screen driving signal which is matched with the main screen;

the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to a main screen for playing; the signal switcher is also used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher;

the main display controller transmits a first enabling signal to the signal switcher so as to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing;

the main display controller receives a first annotation operation acting on the main display device;

and the main display controller displays first annotation information for the courseware on the first video signal according to the first annotation operation.

In a second aspect, the embodiment of the invention further provides a main display device, wherein the main display device is respectively connected with a pair of display devices and an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; an auxiliary display controller and an auxiliary screen are arranged in the auxiliary display device, wherein the main display controller is used for:

receiving an external video signal transmitted by the electronic equipment, wherein the external video signal is used for displaying courseware;

converting the external video signal to obtain a first sub-video signal which is adapted to the main screen, wherein the first sub-video signal is a screen driving signal which is adapted to the main screen;

transmitting the first sub video signal to the signal converter, wherein the signal converter is used for transmitting the first sub video signal to a main screen for playing; the signal switcher is also used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher;

transmitting a first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, wherein the auxiliary display controller is used for converting the external video signal into a first sub video signal, and transmitting the first sub video signal to the auxiliary screen for playing;

Receiving a first annotation operation acting on the main display device;

and displaying first annotation information for the courseware on the first 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 a pair of display devices that are connected, where the main display device is connected to an electronic device, and a controller, a main display controller, a signal switcher, a signal converter, and a main screen are disposed in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device;

the main display controller is used for receiving an external video signal transmitted by the electronic equipment, and the external video signal is used for displaying courseware; converting the external video signal to obtain a first sub-video signal which is adapted to the main screen, wherein the first sub-video signal is a screen driving signal which is adapted to the main screen; transmitting the first sub video signal to the signal converter, wherein the signal converter is used for transmitting the first sub video signal to a main screen for playing; the signal switcher is also used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher; transmitting a first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller;

The auxiliary display controller is used for converting the external video signal into a first sub video signal, and transmitting the first sub video signal to the auxiliary screen for playing;

the main display controller is further used for receiving a first annotation operation acting on the main display device; and displaying first annotation information for the courseware on the first 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 fifth aspect, an embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements the annotating method of courseware according to the first aspect.

In this embodiment, the main display controller receives an external video signal transmitted by the electronic device, where the external video signal is used to display courseware; the main display controller converts the external video signal to obtain a first sub video signal which is adaptive to a main screen, wherein the first sub video signal is a screen driving signal which is adaptive to the main screen; the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to the main screen for playing; the first video signal is used for converting the first video signal into an external video signal and transmitting the external video signal to the signal switcher; the main display controller transmits a first enabling signal to the signal switcher to control the signal switcher to transmit an external video signal to the auxiliary display controller, the auxiliary display controller is used for converting the external video signal into a first sub video signal, the first sub video signal is transmitted to the auxiliary screen to be played, the main display controller coordinates the main display device and the auxiliary display device to play the external video signal, the main display controller is connected with one electronic device, two machines are not required to be connected with different electronic devices respectively and independently, the operation simplicity is greatly improved, the main display controller and the auxiliary display controller are not required to communicate with courseware frequently, the operation simplicity is greatly improved, the same sub video signal can be displayed on the main display device and the courseware, the real-time performance of the display of the main display device and the auxiliary display device is guaranteed, and the time delay of the display courseware is reduced.

In addition, the main display controller receives a first annotation operation acting on the main display device, and according to the first annotation operation, first annotation information is displayed on the first video signal for courseware, and the courseware can be annotated independently in the main display device.

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 flowchart of a method for annotating courseware according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for annotating courseware according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a main display device according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of an annotating system for courseware according to a fourth embodiment of the present invention;

fig. 6 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 Multimedia Interface, 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 illustrated in fig. 1, the main display device 10 may specifically include the following structure: the display device comprises a controller 110, a main display controller 120 capable of converting video signals into screen driving signals, a signal converter 130 capable of converting the screen driving signals into video signals, a signal switcher 140, a main screen 150 and the like.

The controller 110 belongs to an operation module with higher performance.

For example, the controller 110 may be an Android (Android) module, i.e., an Android (Android) system may be installed, and components such as a CPU (Central Processing Unit ), a GPU (Graphics Processing Unit, graphics processor), a RAM (random access Memory ), and a ROM (Read-Only Memory) are configured, for example, for the Android7.0 version, the CPU is a dual core a72 and a quad core a53, the GPU is a Mali T860, the RAM is 4GB, the ROM is 32GB, and so on.

For another example, the controller 110 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, namely screen driving signals. Illustratively, the video signal is a high definition multimedia interface (High Definition Multimedia Interface, HDMI) signal, and the drive signal is a video serial interface (V-By-One, VBO) signal or a low voltage differential signaling technology interface (Low Voltage Differential Signaling, LVDS) signal. Among them, the VBO signal has an advantage of superimposing a Clock (CLK) on the original data signal of the video signal and transmitting in a common mode. Thus, compared with HDMI signals, CLK signal wires can be omitted, and the transmission distance is relatively short, so that the requirements on transmission wires are very low, and common five types of wires are needed. The LVDS interface uses a very low voltage swing (about 350 mV) to perform data transmission by differential between two printed circuit board traces or a pair of balanced cables, i.e., low voltage differential signaling. By adopting the LVDS interface, signals can be transmitted on the differential printed circuit board wires or the balance cable at a rate of hundreds of Mbit/s, and low noise and low power consumption are realized due to the adoption of a low-voltage and low-current driving mode. In general, the display controller has built-in circuit logic for converting video signals into driving signals.

By using the interaction between the controller 110 and the main display controller 120, the signal processing with high operation performance requirement, such as annotation function, can be configured on the controller 110 with high operation performance. Moreover, the cost caused by changing the main display 120 is not increased.

Further, the main display controller 120 is provided with a first video input port 121, a second video input port 122, a signal control port 123, and a main video output port 124.

The first video input port 121 is used for connecting with an electronic device to input a video signal from the electronic device 30. By way of example, the video signal of the electronic device 30 may include a graphical user interface of the electronic device 30. The electronic device 30 may be a mobile phone, a computer, a tablet, a screen-transmitting device, etc.

The second video input port 122 is connected to the controller 110 for inputting video signals from the controller 110. The video signal of the controller 110 may include, for example, a graphical user interface of an operating system running on top of the controller 110.

The first video input port 121 may expose a housing of the main display device 10, serve as a pin in a data port, connect with the electronic device 30, and input a video signal of the electronic device 30 to the main display device 10.

The signal converter 130 belongs to a converter, and can receive a driving signal, and convert the driving signal into a first signal and a second signal for outputting, where the first signal is a video signal, and the second signal is a screen driving signal. For the main display device shown in fig. 1, the signal converter 130 has an input port 131, a first output port 132, and a second output port 133 as shown in fig. 1.

The input port 131 is connected to the main video output port 124 for inputting a screen driving signal.

The first output port 132 is for outputting video signals.

The second output port 133 is connected to the main screen 150 for outputting a screen driving signal.

That is, specifically, the signal converter 130 is configured to convert a screen driving signal input to the input port 131 into a first signal and a second signal, where the first signal is a video signal, and the second signal is a screen driving signal, and the first signal and the second signal are output from the first output port 132 and the second output port 133, respectively.

The signal switch 140 belongs to a switch, and may receive at least two video signals, which may be HDMI signals, and output one of the video signals. For the main display device shown in fig. 1, as shown in fig. 1, the signal switcher 140 includes a first signal input port 141, a second signal input port 142, a signal output port 143, and a control port 144.

The first signal input port 141 is connected to the first output port 132 for inputting a video signal from the video signal of the signal converter 130; the video signal of the signal converter 130 is converted from the screen driving signal output by the main display controller 120; the screen driving signal output by the main display controller 120 may be converted by the main display controller 120 according to the video signal input from the electronic device 30, or may be converted by the main display controller 120 according to the video signal input from the controller 110, and the main display controller 120 may select this.

The second signal input port 142 is connected to the controller 110 for inputting a video signal from the controller 110.

The control port 144 is connected to the signal control port 123 for receiving an enable signal.

The signal output port 143 is configured to output a video signal when the control port 144 receives the enable signal.

The signal output port 143 may expose a housing of the main display device 10, be a pin in a data port, be connected to the sub display device 20, and input a video signal output from the controller 110 or output from the signal converter 130 to the sub display device 20.

For example, when the main display controller 120 transmits a low level signal as an enable signal to the signal switch 140, the signal switch 140 outputs the video signal transmitted by the signal converter 130.

When the main display controller 120 transmits a high level signal as an enable signal to the signal switch 140, the signal switch 140 outputs the video signal transmitted by the controller 110.

Specifically, the enable signal may include a first enable signal and a second enable signal. When the control port 144 of the signal switch 140 receives a first enable signal, such as a low level signal, the signal output port 143 outputs the video signal from the first signal input port 141; when the control port 144 of the signal switch 140 receives a second enable signal, such as a high level signal, the signal output port 143 outputs a video signal from the second signal input port 142.

That is, it is possible to control which way of video signal is output by inputting an enable signal to the control port 144 of the signal switcher 140. It should be noted that, the video signal from the first signal input port 141 is the video signal from the signal converter 130; the video signal of the signal converter 130 is converted from the screen driving signal output by the main display controller 120; the screen driving signal output by the main display controller 120 is converted by the main display controller 120 according to the video signal input from the electronic device 30, or converted by the main display controller 120 according to the video signal input from the controller 110. That is, when the control port 144 of the signal switcher 140 receives the first enable signal, an effect of outputting the video signal of the electronic device 30 or the video signal of the controller 110 to other display devices, such as the sub display device 20, can be achieved.

As shown in fig. 1, the sub display apparatus 20 may include a sub display controller 210, a sub screen 220, which may convert a video signal into a driving signal. The sub display controller 210 is connected with the data interface of the main display device 10 for inputting video signals; the sub-screen 220 is connected to the sub-display controller 210 for inputting a screen driving signal.

The auxiliary display controller 210 belongs to a display screen controller (Display Controllers), has lower operation performance, such as 811 SOC, is responsible for receiving video signals from a computer serial port, is put into a frame memory, and generates serial display data and scanning control time sequences required by a screen according to a partition driving mode, namely a screen driving signal. Illustratively, the video signal is a high definition multimedia interface (High Definition Multimedia Interface, HDMI) signal, and the drive signal is a video serial interface (V-By-One, VBO) signal or a low voltage differential signaling technology interface (Low Voltage Differential Signaling, LVDS) signal. Among them, the VBO signal has an advantage of superimposing a Clock (CLK) on the original data signal of the video signal and transmitting in a common mode. Thus, compared with HDMI signals, CLK signal wires can be omitted, and the transmission distance is relatively short, so that the requirements on transmission wires are very low, and common five types of wires are needed. The LVDS interface uses a very low voltage swing (about 350 mV) to perform data transmission by differential between two printed circuit board traces or a pair of balanced cables, i.e., low voltage differential signaling. By adopting the LVDS interface, signals can be transmitted on the differential printed circuit board wires or the balance cable at a rate of hundreds of Mbit/s, and low noise and low power consumption are realized due to the adoption of a low-voltage and low-current driving mode. In general, the display controller has built-in circuit logic for converting video signals into driving signals.

Taking an intelligent interaction panel 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 screen (such as a main screen and an auxiliary screen), 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, and the intelligent interaction panel is combined by integral structural parts and is supported by a special software system, wherein the screen 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.

Further, the main display device 10 may further include: a routing module (not shown) that may receive an access signal when the first video input port 121 receives a video signal.

The routing module includes: a first network port (not shown), a second network port (not shown).

The first network port is connected to the main display controller 120, and is used for inputting an access signal, where the access signal is generated when the main display controller 120 detects that the electronic device 30 is accessed, and is sent to the routing module.

The second network port is connected to the secondary display 210, and is used for outputting an access signal. Further, the auxiliary display controller 210 may convert the video signal received from the main display device 10 into a driving signal according to the access signal, and send the driving signal to the auxiliary screen 220, so as to drive the auxiliary screen 220 to display the video signal corresponding to the driving signal.

Example 1

Fig. 2 is a flowchart of a method for annotating courseware provided in a first embodiment of the present invention, where the embodiment may be adapted to a case where a main display controller controls a main display device and a sub display device to display courseware, and the main display controller and the sub display device independently annotate the courseware, where the method may be performed by the main display device and the sub display device, the main display device is connected to the sub display device, and the main display device and the sub display device may be implemented by software and/or hardware, where a controller, a main display controller, a signal switcher, a signal converter, and a main screen are provided in the main display device; the auxiliary display device is provided with an auxiliary display controller and an auxiliary screen, and the method specifically comprises the following steps:

s201, the main display controller receives an external video signal transmitted by the electronic equipment, and the external video signal is used for displaying courseware.

In this embodiment, the main display controller is kept connected to an electronic device, such as a personal computer, a notebook computer, etc., and the electronic device has a courseware, calls an application adapted to the format of the courseware, and opens the courseware, at this time, the courseware is displayed on a desktop, and converts desktop data into a video signal, such as an HDMI signal, so as to generate an external video signal, that is, the external video signal is used to display the courseware.

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 main display device is connected with the electronic device through a wire.

Furthermore, the main display device is provided with a data port, the electronic device is also provided with a data port, and a data line can be connected between the data port of the main display device and the data port of the electronic device, so that the electronic device can be connected with the data port.

The data port of the main display device and the data port of the electronic device can be provided with various types of pins such as video pins, data pins, network pins and the like according to service requirements.

The video pins may be used to transmit video signals, and the HDMI signal is taken as an example of the video signals, and the pair of video pins may be used to transmit HDMI clock signals, the pair of video signals may be used to transmit HDMI red signals, the pair of video signals may be used to transmit HDMI green signals, and the pair of video signals may be used to transmit HDMI blue signals.

The data pins may be used to transmit serial signals, such as USB3.0 signals, USB2.0 signals, including camera, MIC (microphone), TOUCH (TOUCH operation), and the like.

S202, the main display controller converts the external video signal to obtain a first sub-video signal which is adaptive to the main screen, wherein the first sub-video signal is a screen driving signal which is adaptive to the main screen.

Specifically, in this embodiment, after receiving the external video signal, the main display controller may convert the external video signal into a screen driving signal, thereby generating the first sub video signal.

Wherein the matching of the first partial video signal with the main screen means that the main screen can play the first partial video signal.

Of course, in this embodiment, the driving signals of the same specification may be used for the main screen and the sub-screen. The main display controller or the auxiliary display controller can perform signal conversion processing on the input video signals to obtain driving signals which are of the same specification and are suitable for the main screen and the auxiliary screen.

S203, the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to a main screen for playing; the first video signal is further used for converting the first video signal into the external video signal, and transmitting the external video signal to the signal switcher.

In this embodiment, the signal converter belongs to a converter, and may receive a driving signal, and convert the driving signal into a first signal and a second signal for outputting, where the first signal is a video signal, and the second signal is a screen driving signal. That is, after the first partial video signal is processed by the signal converter, the signal converter may output the original first partial video signal in one path, and output the external video signal restored according to the first partial video signal in the other path.

For the first video signal output by the signal converter, the first video signal can be directly transmitted to the main screen for playing. Furthermore, the main display controller can be externally connected with the video signal and put into the frame memory, generates serial display data and scanning control time sequence required by the main screen for the externally connected video signal according to the partition driving mode, namely, the first sub video signal, and transmits the first sub video signal to the main screen through the signal converter, and the main screen plays according to the first sub video signal (the serial display data and the scanning control time sequence), so that courseware is displayed on the main screen.

And transmitting the external video signal output by the signal converter to the signal switcher.

S204, the main display controller transmits a first enabling signal to the signal switcher so as to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

In this embodiment, when the main display controller transmits the external video signal converted by the signal switch to the signal switch, at the same time, the main display controller generates the first enable signal and transmits the first enable signal to the signal switch.

The signal switcher responds to the first enabling signal and outputs the external video signal from the signal converter, namely, the external video signal is output to the auxiliary display controller, and the auxiliary display controller converts the external video signal into a first sub video signal and transmits the first sub video signal to the auxiliary screen for playing. Similarly, the first partial video signal is matched with the secondary screen and can be played in the secondary screen.

Further, the auxiliary display controller receives the external video signal from the controller, puts the external video signal into the frame memory, generates serial display data and scanning control time sequence required by the screen for the external video signal according to the partition driving mode, namely, a first sub video signal, and plays the screen according to the first sub video signal (the serial display data and the scanning control time sequence), so that courseware is displayed on the screen.

S205, 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 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.

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.

It should be noted that, in addition to criticizing and annotating, the first annotation information may be used for other purposes, for example, when the primary display device and the secondary display device simultaneously display problems of courseware, the teacher may enable different students to answer the problems on the primary display device and the secondary display device, where one or more students answer the problems on the primary display device through the first annotation operation, and at this time, the first annotation information is solution problem information, and so on, which is not limited in this embodiment.

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 shields the controller from touch operations that are applied to the main display device.

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.

S206, the main display controller displays first annotation information for the courseware on the first 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 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 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 divided video signal as 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 sub video signal, which may mean that the external video signal is received from the electronic device, the external main video signal is converted into the first sub video signal, the first sub video signal is transmitted to the main screen through the signal converter, the first sub video signal has multiple frames of image data, the image data when the main screen maintains to display and triggers the first annotation operation is ignored, and other image data is ignored.

Since the first partial video signal has a plurality of frames of image data, the different image data have a difference in some extent when displayed, and by freezing the first partial video signal, it is possible to maintain smoothness when displaying the first annotation information.

Of course, since the content difference between different image data is not large, the first partial video signal may not be frozen, which is not limited in this embodiment.

The main display controller generates a first mask layer on the first sub video signal, wherein the first mask layer can be a window, and the window is positioned on the first sub video signal in the operating system.

And the main display controller displays the first annotation information for courseware in the first cover layer according to the first annotation operation, so that the first annotation information is displayed on the first 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 sub 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 sub video signal.

Example two

Fig. 3 is a flowchart of a method for annotating courseware provided in a second embodiment of the present invention, where the present embodiment is based on the foregoing embodiment, and further adds a processing operation of independently annotating courseware on a secondary display device, and the method specifically includes the following steps:

s301, the main display controller receives an external video signal transmitted by the electronic equipment, and the external video signal is used for displaying courseware.

S302, the main display controller converts the external video signal to obtain a first sub-video signal which is adaptive to the main screen, wherein the first sub-video signal is a screen driving signal which is adaptive to the main screen.

S303, the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to a main screen for playing; the first video signal is further used for converting the first video signal into the external video signal, and transmitting the external video signal to the signal switcher.

S304, the main display controller transmits a first enabling signal to the signal switcher so as to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

S305, the auxiliary display controller receives a second annotation operation acting on the auxiliary display device.

In this embodiment, the user may control the secondary display device to enter the annotation mode according to the demonstration situation of the actual courseware, and trigger the second annotation operation on the secondary display device, so that the secondary display device 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.

It should be noted that, in addition to criticizing and annotating, the second annotation information may be used for other purposes, for example, when the primary display device and the secondary display device simultaneously display problems of courseware, the teacher may enable different students to answer the problems on the primary display device and the secondary display device, where one or more students answer the problems on the secondary display device through the second annotation operation, and at this time, the second annotation information is solution problem information, and so on, which is not limited in this embodiment.

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.

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 S306, the auxiliary display controller displays second annotation information for the courseware on the first 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 first 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 first 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 the first divided video signal as second annotation information such as a line, a circle, an arrow, and the like, which is not limited in this embodiment.

In a specific implementation, the secondary display controller may freeze the first sub video signal, which may mean to keep receiving the external video signal from the primary display device, converting the external video signal into the first sub video signal, and transmitting the first sub video signal to the secondary screen, where the first sub video signal has multi-frame image data, and ignoring other image data when the secondary screen maintains to display the image data that triggers the second annotation operation.

Since the first partial video signal has a plurality of frames of image data, the different image data have a difference in some extent when displayed, and by freezing the first partial video signal, it is possible to maintain smoothness when displaying the second annotation information.

The secondary display controller generates a second mask layer on the first sub video signal, wherein the second mask layer can be a window, and the window is positioned on the first sub 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 first 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 first 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 first video signal.

In this embodiment, the auxiliary display controller receives the second annotation operation acting on the auxiliary display device, and according to the second annotation operation, displays second annotation information for the courseware on the first video signal in the auxiliary display device, and in the auxiliary display device, the courseware can be annotated independently, so that flexibility is high, and delay in annotating the courseware can be reduced due to reduction in delay in displaying the courseware.

Example III

Fig. 4 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 pair of display devices and an electronic device, and a controller 401, a main display controller 402, a signal switcher 404, a signal converter 403, and a main screen 405 are disposed in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device, wherein the primary display controller 402 is used for:

converting the external video signal to obtain a first sub-video signal adapted to the main screen 405, where the first sub-video signal is a screen driving signal adapted to the main screen 405;

transmitting the first partial video signal to the signal converter 403, where the signal converter 403 is configured to transmit the first partial video signal to the main screen 405 for playing; and is further configured to convert the first video signal into the external video signal, and transmit the external video signal to the signal switcher 404;

transmitting a first enabling signal to the signal switcher 404 to control the signal switcher 404 to transmit the external video signal to the auxiliary display controller, wherein the auxiliary display controller is used for converting the external video signal into a first sub video signal, and transmitting the first sub video signal to the auxiliary screen for playing;

Receiving a first annotation operation acting on the main display device;

In one embodiment of the present invention, the main display 402 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 controller 402 is further configured to:

generating a first mask over the first divided video signal;

and displaying first annotation information for the courseware in the first mask according to the first annotation operation.

freezing the first partial video signal;

and at the end of the first annotating operation, the freezing of the first sub video signal is relieved.

In one embodiment of the present invention, the main display 402 is further configured to shield the controller 401 from the touch operation 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. 5 is a schematic structural diagram of an annotation system for courseware according to a fourth embodiment of the present invention, where the system includes a main display device 510 and a sub display device 520 connected to each other, the main display device 510 is connected to an electronic device, and a controller 511, a main display controller 512, a signal converter 513, a signal switcher 514, and a main screen 515 are disposed in the main display device 510; a sub display 521 and a sub screen 522 are provided in the sub display device 520;

the main display controller 512 is configured to receive an external video signal transmitted by the electronic device, where the external video signal is used to display courseware; converting the external video signal to obtain a first sub video signal adapted to the main screen 515, where the first sub video signal is a screen driving signal adapted to the main screen 515; transmitting the first partial video signal to the signal converter 513, where the signal converter 513 is configured to transmit the first partial video signal to the main screen 515 for playing; the signal switcher 514 is further configured to convert the first video signal into the external video signal, and transmit the external video signal to the external video signal; transmitting a first enable signal to the signal switch 514 to control the signal switch 514 to transmit the external video signal to the auxiliary display controller 521;

The auxiliary display controller 521 is configured to convert the external video signal into a first sub-video signal, and transmit the first sub-video signal to the auxiliary screen 522 for playing;

the main display controller 512 is further configured to receive a first annotation operation that acts on the main display device 510; and displaying first annotation information for the courseware on the first video signal according to the first annotation operation.

In one embodiment of the present invention, the main display 512 is further configured to receive a touch operation acting on the main display device 510 as a first annotating operation.

In one embodiment of the present invention, the main display 512 is further configured to:

generating a first mask over the first divided video signal;

freezing the first partial video signal;

In one embodiment of the present invention, the main display 512 is further configured to shield the controller 511 from the touch operation of the main display 510.

In one embodiment of the present invention, the secondary display 521 is further configured to:

receiving a second annotation operation on the secondary display device 520;

and displaying second annotation information for the courseware on the first video signal according to the second annotation operation.

In one embodiment of the present invention, the secondary display 521 is further configured to receive a touch operation acting on the secondary display device 520 as a second annotation operation.

generating a second mask over the first divided video signal;

and displaying second annotation information for the courseware in the second mask according to the second annotation operation.

freezing the first partial video signal;

and at the end of the second annotating operation, the freezing of the first video signal is relieved.

In one embodiment of the present invention, the secondary display 521 is further configured to shield the controller 511 from the touch operation applied to the secondary display device 520.

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. 6 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention. As shown in fig. 6, the computer apparatus includes a processor 600, a memory 601, a communication module 602, an input device 603, and an output device 604; the number of processors 600 in the computer device may be one or more, one processor 600 being taken as an example in fig. 6; the processor 600, the memory 601, the communication module 602, the input means 603 and the output means 604 in the computer device may be connected by a bus or other means, in fig. 6 by way of example.

The memory 601 is a computer readable storage medium, and can be used to store a software program, a computer executable program, and a module, such as a module corresponding to the annotation method of courseware in this embodiment (for example, the controller 401 and the main display controller 402 in the main display device shown in fig. 4, or the controller 511, the main display controller 512, and the sub-display controller 521 in the annotation system of courseware shown in fig. 5). The processor 600 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 601.

The memory 601 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, the memory 601 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 601 may further include memory located remotely from processor 600, which may be connected to a 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 602 is used for establishing connection with the display screen and realizing data interaction with the display screen. The input means 603 may be used to receive entered numeric or character information and to generate key signal inputs related to user settings and function control of the computer device.

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, on which a computer program is stored, the computer program when executed by a processor implements a method for annotating courseware, a main display device is connected to a pair of display devices and an electronic device, respectively, and a controller, a main display controller, a signal switcher, a signal converter, and a main screen are disposed in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device, and the method comprises the following steps:

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

1. A annotating method of courseware is characterized in that a main display device is respectively connected with a pair of display devices and an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device; the method comprises the following steps:

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 displaying first annotation information for the courseware on the first video signal according to the first annotation operation, comprising:

the main display controller generates a first mask layer on the first sub 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 split video signal according to the first annotation operation, further comprising:

the main display controller freezes the first sub video signal;

and the main display controller releases the freezing of the first sub video signal when the first annotating operation is finished.

5. The method of any of claims 1-4, wherein the main display masks touch operations on the main display device from the controller.

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;

and the auxiliary display controller displays second annotation information for the courseware on the first 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 displays second annotation information for the courseware on top of the first split video signal in accordance with the second annotation operation, comprising:

the auxiliary display controller generates a second mask layer on the first sub 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 first split video signal in accordance with the second annotation operation, further comprising:

The auxiliary display controller freezes the first sub video signal;

and the auxiliary display controller releases the freezing of the first sub video signal when the second annotation operation is finished.

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. The main display device is characterized in that the main display device is respectively connected with a pair of display devices and an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; an auxiliary display controller and an auxiliary screen are arranged in the auxiliary display device, wherein the main display controller is used for:

receiving a first annotation operation acting on the main display device;

12. The annotating system of courseware is characterized by comprising a main display device and a pair of display devices which are connected, wherein the main display device is connected with an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; a secondary display controller and a secondary screen are arranged in the secondary display device;

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.