CN112579016B - Annotating method, system, equipment and storage medium for courseware - Google Patents
Annotating method, system, equipment and storage medium for courseware Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- 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
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- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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- 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
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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, and the external video signal is used for displaying courseware; the main display controller receives annotation operation, generates annotation information for the courseware on the external video signal, and obtains a video signal; the main display controller controls the main display device to play the sub video signals; the main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals. The main display device and the auxiliary display device can synchronously add endorsements to courseware, and the flexibility is high.
Description
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, and therefore the courseware is required to be annotated in different machines, and the operation is complex.
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 annotating operation of the courseware is complicated.
In a first aspect, an embodiment of the present invention provides an annotation method for courseware, in which a main display device is connected to an electronic device respectively, a controller, a main display controller, and a signal switcher are disposed in the main display device, the signal switcher is connected to the controller and the controller respectively, and a sub display controller is disposed in the sub display device, the method includes:
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 receives annotation operation, generates annotation information for the courseware on the external video signal, and obtains a video signal;
The main display controller controls the main display device to play the sub video signals;
The main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
In a second aspect, an embodiment of the present invention further provides a main display device, where the main display device is connected to an electronic device respectively with a pair of display devices, a controller, a main display controller, and a signal switcher are provided in the main display device, the signal switcher is connected to the controller and the controller respectively, and a pair of display controllers are provided in the pair of display devices, where the main display controller is used to:
Receiving an external video signal transmitted by the electronic equipment, wherein the external video signal is used for displaying courseware;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, wherein the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
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 that are connected, where the main display device is connected to an electronic device, a controller, a main display controller, and a signal switcher are provided in the main display device, and the signal switcher is respectively connected to the controller and the main display controller, and an auxiliary display controller is provided in the auxiliary 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;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signal and the enabling signal to the signal switcher so as to control the signal switcher to transmit the sub video signal to the auxiliary display controller;
and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
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, the external video signal is used for displaying courseware, the main display controller generates component video signals based on the external video signal, on one hand, the main display controller controls the main display device to play the component video signals, on the other hand, the main display controller transmits the component video signals and enabling signals to the signal switcher so as to control the signal switcher to transmit the component video signals to the auxiliary display controller, the auxiliary display controller is used for controlling the auxiliary display device to play the component video signals, the main display device and the auxiliary display device are coordinated to play the component video signals uniformly by the main display controller, the electronic device is connected, and the two machines are not required to be connected to different electronic devices independently, so that the simplicity of operation is greatly improved, and the main display controller and the auxiliary display controller are not required to frequently communicate courseware, so that the courseware can be displayed on the main display device and the auxiliary display device, the real-time performance of the courseware of the main display device and the auxiliary display device is ensured, and the courseware is reduced.
In addition, the main display controller receives annotation operation, and annotation information is displayed for courseware on the external video signal, so that a sub video signal is generated, the main display device and the auxiliary display device can synchronously add annotation to the courseware, the flexibility is high, the annotation information can be displayed through the video signal display, the display device can display the annotation information through displaying the sub video signal, the annotation information does not need to be generated, the load of the auxiliary display device can be reduced, and in addition, the delay of annotating the courseware can be reduced due to the reduction of the delay of displaying the courseware.
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 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 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 ), 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 Mali T860, the RAM is 4GB, and the ROM is 32GB, etc.
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, 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, for example 811 SOC.
The intelligent interactive panel is taken as an example of a main display device and an auxiliary display device, the hardware part of the intelligent interactive 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 interactive panel is combined together by an integral structural part, and 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 method may be implemented by a main display device and an auxiliary display device, where the main display device and the auxiliary display device are connected to each other, and the main display device and the auxiliary display device may be implemented by software and/or hardware, where a controller, the main display device, and a signal switcher are provided in the main display device, and the signal switcher is respectively connected to the controller and the controller, and the auxiliary display device is provided in the auxiliary display device, where the method specifically includes the following steps:
s301, the main display controller receives an external video signal transmitted by the electronic equipment.
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), seewo (jow), 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 one case, the main display device is connected to the electronic device by 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.
Network pins may be used to transmit network signals, such as gigabit network signals, for network communication.
In another case, the electronic device has a data port to which a screen-transmitting device is connected, and the main display device is wirelessly connected to the screen-transmitting device.
Further, the screen transmission device includes but is not limited to a form of USB Dongle (USB Dongle) and the like, including but not limited to a transmission interface, a wireless communication chip, an input unit, an output unit, a memory, a processor and the like.
The transmission interface is an interface which takes the screen transmission equipment as an external device and accesses other equipment (such as electronic equipment). For example, a USB interface (including but not limited to Type A, type B, type C), and the like.
The wireless communication chip may be used for wireless connection, including but not limited to a Wi-Fi chip, a bluetooth chip, etc., wherein the Wi-Fi chip may apply a 2.4G frequency band, a 5G frequency band, etc., and the wireless communication chip belongs to a short-range wireless transmission technology, and after the screen transmission device is paired with the main display device, a wireless connection may be established with the main display device through the wireless communication chip, and the screen transmission device may receive data (e.g., touch data, etc.) from the main display device through the wireless connection and input the data (e.g., screen data, audio data, etc.) to the main display device.
Pairing may refer to authenticating the screen transfer device by the master display device and writing information of the wireless access point of the master display device into the screen transfer device.
The input unit may be used to generate key signal inputs related to user settings and function control. Specifically, the input unit may include one or more of a function key (e.g., a control to control start of screen transfer, a control to control suspension of screen transfer, a control to stop screen transfer), a touch panel, a joystick, and the like.
The output unit may be used to output a status of the screen, e.g. on screen, paused screen, not on screen, etc., in particular the output unit may comprise an indicator light, etc.
The memory may be used to store software programs as well as various data. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an application program (e.g., pairing, transmitting screen data, audio data, touch data, etc.) required for at least one function, etc.; the storage data area may store data (e.g., pairing data, operation identification bits, etc.) created in accordance with the use of the screen. In addition, the memory 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 volatile solid-state storage device.
The processor is a control center of the screen-transfer device, including but not limited to an MPU (Micro Processor Unit, microprocessor), which uses various interfaces and lines to connect the various parts of the entire screen-transfer device, and performs various functions and processes of the screen-transfer device by running or executing software programs and/or modules stored in memory, and invoking data stored in memory, thereby performing overall monitoring of the screen-transfer device.
The screen transmission client can be installed in the electronic equipment, the screen transmission server can be installed in the main display equipment, the screen transmission client and the screen transmission server follow a screen transmission protocol, and screen transmission operation is executed between the electronic equipment and the main display equipment through the screen transmission equipment.
In this embodiment, the electronic device transmits its external video signal to the main display device, and the main display controller receives the external video signal.
S302, the main display controller receives annotation operation, and annotation information is generated for the courseware on the external video signal to obtain a video signal.
In this embodiment, after receiving the external video signal, the main display controller may process the external video signal according to a predetermined protocol, for example, compress the external video signal to a uniform resolution, cut, add a watermark, add annotation information, and so on, so as to generate the sub video signal.
If the main display device and the auxiliary display device enter an annotation mode, annotation operation can be received, annotation information is generated for courseware on the external video signal, and therefore a sub video signal is generated.
In one way of entering the annotation mode, the primary display device has a primary operational area and a non-primary operational area.
The main operation area is an area designated in a UI (User Interface) of the main display device, such as a sidebar, and may be used to trigger an operation designated in the main display device, such as adding annotation information.
The non-main operation area is an area except the main operation area in the UI of the main display device, and can be used for operating courseware in a non-annotating mode.
In this way, a main annotation control is displayed in the main operation area, the main display receives a touch operation acting on the main annotation control, the main display enters an annotation mode in response to the touch operation, and an annotation notification is sent to the auxiliary display to inform the auxiliary display to enter the annotation mode.
In another way of entering the annotation mode, the secondary display device has a secondary operation region and a non-secondary operation region.
The secondary operation area is an area designated in the UI of the secondary display device, such as a sidebar, and can be used to trigger an operation designated in the primary display device, such as adding annotation information.
The non-secondary operation area is an area except for the secondary operation area in the UI of the secondary display device, and can be used for operating courseware in the non-annotation mode.
In this manner, the secondary annotation control is displayed in the secondary operation area, and the main display receives an annotation notification sent by the secondary display when entering the annotation mode, and the main display enters the annotation mode in response to the annotation notification.
The auxiliary display controller enters an annotation mode when receiving touch operation acting on the auxiliary annotation control.
Of course, the above manner of entering the annotation mode is merely an example, and other manners of entering the annotation mode may be set according to actual situations when implementing the present embodiment, which is not limited in this embodiment. In addition, other modes of entering the annotation mode may be adopted by those skilled in the art according to actual needs, and the embodiment is not limited thereto.
S303, the main display controller controls the main display device to play the sub video signals.
For the sub video signals, the main display controller can directly control the main display device to play.
Furthermore, the main display controller puts the sub video signals into the frame memory, generates serial display data and scanning control time sequence required by the screen aiming at the sub video signals in a partition driving mode, and plays the screen according to the serial display data and the scanning control time sequence, so that courseware and comments thereof are displayed on the screen.
S304, the main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller.
In this embodiment, the main display controller outputs the sub video signal to the signal switcher, and at the same time, the main display controller generates the enable signal and transmits the enable signal to the signal switcher.
The signal switcher responds to the enabling signal and outputs the sub video signal to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display device to play the sub video signal.
Further, the auxiliary display controller receives the sub video signals from the main display controller, puts the sub video signals into the frame memory, generates serial display data and scanning control time sequence required by the screen aiming at the sub video signals in a partition driving mode, and plays the screen according to the serial display data and the scanning control time sequence, so that courseware and comments thereof are displayed on the screen.
In this embodiment, the main display controller receives an external video signal transmitted by the electronic device, the external video signal is used for displaying courseware, the main display controller generates component video signals based on the external video signal, on one hand, the main display controller controls the main display device to play the component video signals, on the other hand, the main display controller transmits the component video signals and enabling signals to the signal switcher so as to control the signal switcher to transmit the component video signals to the auxiliary display controller, the auxiliary display controller is used for controlling the auxiliary display device to play the component video signals, the main display device and the auxiliary display device are coordinated to play the component video signals uniformly by the main display controller, the electronic device is connected, and the two machines are not required to be connected to different electronic devices independently, so that the simplicity of operation is greatly improved, and the main display controller and the auxiliary display controller are not required to frequently communicate courseware, so that the courseware can be displayed on the main display device and the auxiliary display device, the real-time performance of the courseware of the main display device and the auxiliary display device is ensured, and the courseware is reduced.
In addition, the main display controller receives annotation operation, and annotation information is displayed for courseware on the external video signal, so that a sub video signal is generated, the main display device and the auxiliary display device can synchronously add annotation to the courseware, the flexibility is high, the annotation information can be displayed through the video signal display, the display device can display the annotation information through displaying the sub video signal, the annotation information does not need to be generated, the load of the auxiliary display device can be reduced, and in addition, the delay of annotating the courseware can be reduced due to the reduction of the delay of displaying the courseware.
Example two
Fig. 4 is a flowchart of a courseware annotation method according to a second embodiment of the present invention, where the processing operation of superimposing annotation information on external video data is further added based on the foregoing embodiment, and the method specifically includes the following steps:
s401, the main display controller receives an external video signal transmitted by the electronic equipment.
Wherein, external video signal is used for showing courseware.
S402, the main display controller receives annotation operation.
In a specific implementation, the annotating operation belongs to annotating, which can refer to criticizing and annotating in courseware during reading, and is used for helping a user to master contents in the courseware.
Upon triggering the annotation operation, the user may select an attribute of the annotation information, such as a color of the annotation information, a line width of the annotation information, and so on.
In addition, the main display device may also provide some unified graphics as annotation information, such as lines, circles, arrows, 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 main display controller receives the 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 annotation operation. The external device includes, but is not limited to, a mouse and the like.
The embodiment is preferably illustrated by touch, and it is understood that all annotating operations in the embodiment may be performed by touch or key, and all descriptions are described by touch.
In the main display device, the main display screen 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 embodiment, the main display receives a touch operation acting on the main display device as an annotating operation. The main display controller can send an enabling signal to the USB switcher to control the USB switcher to output touch operation to the main display controller, at the moment, the controller does not receive the touch operation, or the controller and the main display controller are simultaneously output, at the moment, the controller ignores the touch operation.
In the secondary display device, on the one hand, the secondary display device shields the touch operation that acts on the secondary display device.
The shielding may mean that the secondary display may receive the touch operation, but ignores the touch operation, or may mean that the touch operation is transmitted to the controller without being transmitted to the secondary display, which is not limited in this embodiment.
On the other hand, the secondary display screen shields the controller from touch operations that are applied to the secondary 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 embodiment, the main display receives, as the annotating operation, the touch operation that is sent by the sub-display and acts on the sub-display device. The auxiliary display controller can send an enabling signal to the USB switcher to control the USB switcher to output touch operation to the auxiliary display controller, at the moment, the auxiliary display controller ignores the touch operation and directly transmits the touch operation to the main display controller, the controller does not receive the touch operation, or simultaneously outputs the touch operation to the controller and the auxiliary display controller, at the moment, the auxiliary display controller ignores the touch operation and directly transmits the touch operation to the main display controller, and the controller ignores the touch operation.
S403, the main display controller generates annotation information adapted to the annotation operation.
In this embodiment, the main display may read the attribute of the annotation information selected in the annotation operation, for example, the color of the annotation information, the line width of the annotation information, and so on.
And drawing information with the attribute for courseware as annotation information.
If the annotation information is touch operation, the information with the attribute can be drawn for courseware along the track of the touch operation as the annotation information.
In addition, the main display controller may draw a graph with the attribute for courseware, as annotation information, such as a line, a circle, an arrow, and the like, which is not limited in this embodiment.
S404, the main display controller superimposes the annotation information on the external video signal.
S405, the main display controller combines the external video signal and the annotation information to obtain a sub video signal.
In a specific implementation, the external video signal has multiple frames of image data.
The main display controller superimposes annotation information on one or more frames of image data of the external video signal according to coordinates indicated by annotation operation, and combines the one or more frames of image data in the external video signal with the annotation information, so that one or more frames of new image data are generated and used as sub video signals.
Further, the main display controller freezes the external video signal, which means that the external video signal is kept received, the external video signal has multi-frame image data, the image data when the annotation operation is triggered when the screen is maintained to display, and other image data is ignored.
Because the external video signals all have multi-frame image data, different image data have differences when displayed, and the external video signals can be frozen to be smooth when annotation information is displayed.
Of course, since the content difference between different image data is not large, the external video signal may not be frozen, which is not limited in this embodiment.
If the main display device exits the annotation mode to indicate that the annotation operation is finished, the main display controller releases the freezing of the external video signal when the annotation operation is finished, namely releases the display of the image data triggering the annotation operation, and continues to normally display other image data in the external video signal.
S406, the main display controller controls the main display device to play the sub video signals.
S407, the main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller.
The auxiliary display controller is used for controlling the auxiliary display device to play the sub video signals.
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 an electronic device respectively, a controller 501, a main display controller 502, and a signal switcher 503 are disposed in the main display device, the signal switcher is connected to the controller and the controller respectively, and a sub display controller is disposed in the sub display device, where the main display controller 502 is used for:
Receiving an external video signal transmitted by the electronic equipment, wherein the external video signal is used for displaying courseware;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, wherein the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
In one embodiment of the present invention, the main display device has a main operation area, in which a main annotation control is displayed, and the main display 502 is further configured to:
receiving touch operation acting on the main annotation control;
and responding to the touch operation, entering an annotating mode, and informing the auxiliary display controller to enter the annotating mode.
In one embodiment of the present invention, the secondary display device has a secondary operation area, in which a secondary annotation control is displayed, and the main display 502 is further configured to:
Receiving annotation notification sent by the auxiliary display controller when entering an annotation mode;
Responding to the annotation notification, and entering an annotation mode;
And the auxiliary display enters an annotation mode when receiving touch operation acting on the auxiliary annotation control.
In one embodiment of the present invention, the main display 502 is further configured to shield the controller from the touch operation applied to the main display device;
the auxiliary display controller shields touch operation acted on the auxiliary display equipment;
The secondary display controller shields the controller from touch operation acting on the secondary display device.
In one embodiment of the present invention, the main display 502 is further configured to:
And receiving touch operation acting on the main display equipment as annotation operation.
And/or the number of the groups of groups,
And receiving touch operation which is sent by the auxiliary display and acts on the auxiliary display equipment as annotation operation.
In one embodiment of the present invention, the main display 502 is further configured to:
Generating annotation information adapted to the annotation operation;
superimposing the annotation information on the external video signal;
And combining the external video signal with the annotation information to obtain a sub video signal.
In one embodiment of the present invention, the main display 502 is further configured to:
Freezing the external video signal;
and when the annotating operation is finished, the freezing of the external video signal is relieved.
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, the main display device 610 is connected to an electronic device, a controller 611, a main display controller 612 and a signal switch 613 are disposed in the main display device 610, the signal switch 613 is respectively connected to the controller 611 and the main display controller 612, and a sub display controller 621 is disposed in the sub display device 620;
the main display controller 612 is configured to receive an external video signal transmitted by the electronic device, where the external video signal is used to display courseware;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signal and the enabling signal to the signal switcher so as to control the signal switcher to transmit the sub video signal to the auxiliary display controller;
The secondary display controller 622 is configured to control the secondary display device to play the sub video signal.
In one embodiment of the present invention, the main display device has a main operation area, in which a main annotation control is displayed, and the main display 612 is further configured to:
receiving touch operation acting on the main annotation control;
and responding to the touch operation, entering an annotating mode, and informing the auxiliary display controller to enter the annotating mode.
In one embodiment of the present invention, the secondary display device has a secondary operation area in which a secondary annotation control is displayed, and the main display 612 is further configured to:
Receiving annotation notification sent by the auxiliary display controller when entering an annotation mode;
Responding to the annotation notification, and entering an annotation mode;
And the auxiliary display enters an annotation mode when receiving touch operation acting on the auxiliary annotation control.
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;
the secondary display 622 is further configured to shield the touch operation on the secondary display device from the controller.
In one embodiment of the present invention, the main display 612 is further configured to:
And receiving touch operation acting on the main display equipment as annotation operation.
And/or the number of the groups of groups,
And receiving touch operation which is sent by the auxiliary display and acts on the auxiliary display equipment as annotation operation.
In one embodiment of the present invention, the main display 612 is further configured to:
Generating annotation information adapted to the annotation operation;
superimposing the annotation information on the external video signal;
And combining the external video signal with the annotation information to obtain a sub video signal.
In one embodiment of the present invention, the main display 612 is further configured to:
Freezing the external video signal;
and when the annotating operation is finished, the freezing of the external video signal is relieved.
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, the main display controller 502, and the controller 611, the main display controller 612, and the sub display controller 621 in the annotation system of a courseware shown in fig. 5, and the main display device 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, on which a computer program is stored, the computer program when executed by a processor implementing a method for annotating courseware, a main display device being connected to an electronic device respectively with an auxiliary display device, a controller, a main display controller, and a signal switcher being provided in the main display device, the signal switcher being connected to the controller and the controller respectively, and an auxiliary display controller being provided in the auxiliary display device, the method comprising:
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 receives annotation operation, generates annotation information for the courseware on the external video signal, and obtains a video signal;
The main display controller controls the main display device to play the sub video signals;
The main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
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 (11)
1. The annotating method of courseware is characterized in that a main display device is respectively connected with an auxiliary display device and an electronic device, a controller, a main display controller and a signal switcher are arranged in the main display device, the signal switcher is respectively connected with the controller and the main display controller, and an auxiliary display controller is arranged in the auxiliary 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 receives annotation operation, generates annotation information for the courseware on the external video signal, and obtains a video signal;
The main display controller controls the main display device to play the sub video signals;
The main display controller transmits the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
2. The method of claim 1, wherein the primary display device has a primary operational area in which a primary annotation control is displayed, and further comprising, prior to the primary display receiving an annotation operation:
the main display controller receives touch operation acting on the main annotation control;
and the main display controller responds to the touch operation, enters an annotation mode, and notifies the auxiliary display controller to enter the annotation mode.
3. The method of claim 1, wherein the secondary display device has a secondary operation area in which a secondary annotation control is displayed, and further comprising, prior to the primary display receiving an annotation operation:
the main display controller receives annotation notification sent by the auxiliary display controller when entering an annotation mode;
the main display controller responds to the annotation notification and enters an annotation mode;
And the auxiliary display enters an annotation mode when receiving touch operation acting on the auxiliary annotation control.
4. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The main display controller shields the controller from touch operation acting on the main display device;
the auxiliary display controller shields touch operation acted on the auxiliary display equipment;
The secondary display controller shields the controller from touch operation acting on the secondary display device.
5. The method of any one of claims 1-4, wherein the master controller receiving annotation operations comprises:
The main display controller receives touch operation acting on the main display device as annotation operation;
And/or the number of the groups of groups,
And the main display controller receives the touch operation which is sent by the auxiliary display controller and acts on the auxiliary display equipment as annotation operation.
6. The method of any of claims 1-4, wherein generating annotation information for the courseware on top of the external video signal to obtain a split video signal comprises:
the main display controller generates annotation information adapted to the annotation operation;
The main display controller superimposes the annotation information on the external video signal;
and the main display controller combines the external video signal and the annotation information to obtain a sub video signal.
7. The method of claim 6, wherein generating annotation information for the courseware on top of the external video signal to obtain a split video signal, further comprising:
the main display controller freezes the external video signal;
and the main display controller releases the freezing of the external video signal when the annotating operation is finished.
8. 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, a controller, a main display controller and a signal switcher are arranged in the main display device, the signal switcher is respectively connected with the controller and the main display controller, a pair of display controllers are arranged in the pair of display devices, and 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;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signals and the enabling signals to the signal switcher so as to control the signal switcher to transmit the sub video signals to the auxiliary display controller, wherein the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
9. The annotating system of courseware is characterized by comprising a main display device and an auxiliary display device which are connected, wherein the main display device is connected with an electronic device, a controller, a main display controller and a signal switcher are arranged in the main display device, the signal switcher is respectively connected with the controller and the main display controller, and the auxiliary display controller is arranged in the auxiliary 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;
receiving annotation operation, and generating annotation information for the courseware on the external video signal to obtain a video signal;
Controlling the main display device to play the sub video signal;
transmitting the sub video signal and the enabling signal to the signal switcher so as to control the signal switcher to transmit the sub video signal to the auxiliary display controller;
and the auxiliary display controller is used for controlling the auxiliary display equipment to play the sub video signals.
10. 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 1-7.
11. 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 1-7.
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| CN112579016A (en) | 2021-03-30 |
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