CN109542008B - Multi-screen display control method and system for intelligent full-screen blackboard - Google Patents
Multi-screen display control method and system for intelligent full-screen blackboard Download PDFInfo
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- 230000001360 synchronised effect Effects 0.000 description 8
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/048—Indexing scheme relating to G06F3/048
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Abstract
A multi-screen display control method for an intelligent full-screen blackboard is characterized in that a control device collects data information operated by a user on the intelligent blackboard in real time and forms a data packet; the control device transmits the data packet to the main controller; the main controller receives a data packet; the main controller analyzes the data packet into operation information of a module corresponding to the second display device; the main controller identifies a second operation instruction in the operation information and sends the second operation instruction to a second display device; the second display device responds to the second operation instruction and executes the instruction content. The multi-screen display control method and the multi-screen display control system for the intelligent comprehensive screen blackboard solve the technical problems of chalk pollution, inconvenient processing of teaching contents and poor using effect caused by the existing blackboard for teaching, enrich the functions of the blackboard for teaching, are convenient and fast to use and good in effect, and further achieve the effect of improving the teaching quality.
Description
Technical Field
The invention relates to the technical field of intelligent display, in particular to a multi-screen display control method and a multi-screen display control system for an intelligent full-screen blackboard.
Background
With the progress and development of national economy, the improvement of education quality is imperative, and the reform of the education field must be deepened, so that the promotion of education informatization is important. As is well known, a blackboard is an indispensable teaching facility in the teaching process, and in order to realize educational informatization, blackboard intellectualization also becomes a trend of blackboard development. The intelligent blackboard among the prior art uses devices such as projector, curtain, blackboard, terminal, well accuse, show flat board and whiteboard to replace original non-intelligent blackboard, on the class of teaching of present majority, in order to enlarge the display range of blackboard, can adopt the mode of a chalk blackboard and intelligent blackboard combination, specifically, intelligent blackboard sets up in the middle, chalk blackboard is subdivided to both sides, the blackboard that can have three demonstration like this simultaneously, but this kind of combination mode is the physics combination, a great deal of problem as follows: the chalk blackboard can cause pollution and cause sanitary and health problems, the display contents of the three parts exist independently, the three parts do not have any data transmission, and only the contents of the middle intelligent blackboard can be stored, cleaned, shared and the like, so that the teaching efficiency and the teaching quality are directly influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multi-screen display control method and a multi-screen display control system for an intelligent comprehensive-screen blackboard, which solve the technical problems of chalk pollution, inconvenient processing of teaching contents and poor use effect caused by the existing teaching blackboard, enrich the functions of the teaching blackboard, are convenient and fast to use and have good effect, and further achieve the effect of improving the teaching quality.
In order to achieve the above object, the present invention provides a multi-screen display control method for an intelligent full-screen blackboard, comprising:
a multi-screen display control method for an intelligent full-screen blackboard comprises the intelligent blackboard and an interactive all-in-one machine, wherein the intelligent blackboard comprises a control device and a first display device connected with the control device, and the interactive all-in-one machine comprises a main controller and a second display device connected with the main controller; the control method comprises the following steps: the control device collects data information operated by a user on the intelligent blackboard in real time and forms a data packet; the control device analyzes the data information, identifies a first operation instruction in the data information and sends the first operation instruction to the first display device; the first display device responds to the first operation instruction and executes instruction content; or further comprising: the control device transmits the data packet to the main controller; the master controller receives the data packet; the main controller analyzes the data packet into operation information of a module corresponding to the second display device; the main controller identifies a second operation instruction in the operation information and sends the second operation instruction to the second display device; and the second display device responds to the second operation instruction and executes instruction content.
Further, the step of transmitting the data packet to the host controller includes: and transmitting the data packet to the main controller through a USB protocol.
Further, the parsing the data packet into operation information of a module corresponding to the second display device includes: the main controller analyzes the data packet into point information corresponding to the display module of the second display device through whiteboard application software, and/or analyzes the data packet into function information corresponding to the function module of the second display device.
Further, the data information comprises writing track information collected from a touch sensing device of the intelligent blackboard and/or click information collected from a function key device of the intelligent blackboard.
Another aspect of the present invention provides a multi-screen display control system for an intelligent full-screen blackboard, comprising:
a multi-screen display control system for an intelligent full-screen blackboard comprises the intelligent blackboard and an interactive all-in-one machine, wherein the intelligent blackboard comprises a first display device, and the interactive all-in-one machine comprises a main controller and a second display device connected with the main controller; the intelligent blackboard includes: the data acquisition module is used for acquiring data information operated by a user on the intelligent blackboard in real time and forming a data packet; the first processing module is used for analyzing the data information; the first identification module is used for identifying a first operation instruction in the data information; the first sending module is used for sending the first operation instruction to the first display device; the first execution module is used for responding to the first operation instruction and executing instruction content when the first display device receives the first operation instruction; or further comprising: the data transmission module is used for transmitting the data packet to the main controller; the interactive all-in-one machine comprises: the data receiving module is used for receiving the data packet transmitted by the data transmission module; the second processing module is used for analyzing the data packet; the second identification module is used for identifying a second operation instruction in the analyzed data packet; the second sending module is used for sending the second operation instruction to the second display device; and the second execution module is used for responding to the second operation instruction and executing instruction content when the second display device receives the second operation instruction.
Further, the data transmission module is connected with the data receiving module through a USB data line.
Further, the data information includes writing trace information collected from a writing touch screen of the intelligent blackboard.
Further, the second processing module includes a first parsing unit configured to parse the data packet into point information corresponding to a display module of the second display device.
Further, the data information includes click information collected from a function key area of the intelligent blackboard.
Further, the second processing module includes a second parsing unit, configured to parse the data packet into function information corresponding to the function module of the second display device.
The invention has the beneficial effects that:
according to the multi-screen display control method and the system for the intelligent full-screen blackboard, when the control device of the intelligent blackboard receives writing track information collected from the touch sensing device or click information collected from the function key device, an operation instruction is recognized and the first display device is driven to display correspondingly, meanwhile, if the information is in the same screen mode, the control device can collect the information into a data packet and send the data packet to the main controller of the interactive all-in-one machine, and the main controller receives and analyzes the data packet and also recognizes the operation instruction and drives the second display device to display; if the interactive all-in-one machine is in the split screen mode, the intelligent blackboard does not interact with information of the interactive all-in-one machine, and the intelligent blackboard displays independently; the functions of independent display of the intelligent blackboard and synchronous display of the intelligent blackboard and the interactive all-in-one machine are realized by switching two modes of split screen and same screen. The multi-screen display control method and the multi-screen display control system for the intelligent comprehensive screen blackboard solve the technical problems of chalk pollution, inconvenient processing of teaching contents and poor using effect caused by the existing teaching blackboard, enrich the functions of the teaching blackboard, are convenient and fast to use and good in effect, and further achieve the effect of improving the teaching quality.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent full-screen blackboard according to an embodiment of the present invention;
FIG. 2 is a schematic front view of an intelligent all-around screen blackboard in accordance with an embodiment of the present invention;
FIG. 3 is a hardware diagram of an intelligent full-screen blackboard in accordance with an embodiment of the present invention;
FIG. 4 is a flowchart of a control method for an intelligent full-screen blackboard according to an embodiment of the present invention;
fig. 5 is a block diagram of a control system of the intelligent full-screen blackboard according to the embodiment of the invention.
In the figure, 10-first intelligent blackboard, 11-touch screen, 101-writing touch screen area, 102-shortcut key touch screen area, 12-function key, 20-second intelligent blackboard, 21-touch screen, 201-writing touch screen area, 102-shortcut key touch screen area, 22-function key, 30-interactive all-in-one machine, 32-first display area, 33-second display area, 401/501-data acquisition module, 402/502-first processing module, 403/503-first recognition module, 404/504-first sending module, 405/505-first execution module, 406/506-data transmission module, 601-data receiving module, 602-second processing module, 603-second recognition module, 604-second sending module, 605-second execution module
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, fig. 1 is a schematic structural view of an intelligent full-screen blackboard according to an embodiment of the present invention, fig. 2 is a schematic front view of the intelligent full-screen blackboard according to the embodiment of the present invention, fig. 3 is a hardware view of the intelligent full-screen blackboard according to the embodiment of the present invention, fig. 4 is a flowchart of a control method of the intelligent full-screen blackboard according to the embodiment of the present invention, and fig. 5 is a block diagram of a control system of the intelligent full-screen blackboard according to the embodiment of the present invention.
This embodiment provides a comprehensive screen blackboard of intelligence for the education and teaching field. Referring to fig. 1 in particular, the intelligent full-screen blackboard of the present embodiment includes an interactive all-in-one machine 30, a first intelligent blackboard 10 and a second intelligent blackboard 20; wherein, first intelligent blackboard 10 and second intelligent blackboard 20 divide and establish the both sides at interactive all-in-one 30, and first intelligent blackboard 10 and second intelligent blackboard 20 can dismantle to be connected in interactive all-in-one 30, and the intelligent blackboard specifically can be the liquid crystal blackboard, and of course, the quantity of intelligent blackboard is unrestricted, can be along with the needs a plurality of combinations of teaching.
Referring to fig. 2, in this embodiment, the first intelligent blackboard 10 is further provided with a function key 12, the second intelligent blackboard 20 is further provided with a function key 22, the function key 12 and the function key 22 are respectively connected to the main controller, so as to implement data transmission between the first intelligent blackboard 10 and the second intelligent blackboard 20 and the interactive all-in-one machine 30, the function key 12 refers to a physical function key, such as storing, sharing, generating a two-dimensional code, locally erasing, clearing one key, black screen, resource query, red pen, black pen, blue pen, music, screenshot, mode switching (synchronous, split screen), and the like, and touch screen areas of other modules, so as to enrich functions of the blackboard and enrich teaching resources.
In addition, referring to fig. 2, in this embodiment, both the first intelligent blackboard 10 and the second intelligent blackboard 20 are provided with a touch screen 11(21), the touch screen 11(21) is provided with a touch sensing device, the touch screen 11(21) at least includes a writing touch screen area 101(201) and a shortcut touch screen area 102(202), the writing touch screen area 101(201) is mainly used for writing contents such as pictures and texts, and the shortcut touch screen area 102 is mainly a touch point provided with a series of function options, such as saving, sharing, generating a two-dimensional code, locally erasing, one-key screen cleaning, black screen, resource query, red pen, black pen, blue pen, music, screenshot, mode switching (synchronization and split screen), and the like, and the touch screen areas of other modules enrich functions of the blackboards and teaching resources.
Further, in this embodiment, the touch screen 11(21) may be configured as an infrared technology touch screen, or an electromagnetic touch screen, or a capacitive touch screen, or a resistive touch screen, without specific limitation, as long as an object can press the touch screen 11(21), for example, a nail, a pen shell, and other hard objects to write images and texts on the writing touch screen area 101(201), or click a touch point of a function option on the shortcut key touch screen area 102(202), and the touch screen 11(21) can respond, so that convenience and practicability are achieved, and the use effect is improved.
Referring to fig. 3, the interactive all-in-one machine 30 is provided with a main controller, the first intelligent blackboard 10 and the second intelligent blackboard 20 are both provided with control devices, the control devices may specifically be control chips, the control devices are connected to the main controller to realize data transmission between the first intelligent blackboard 10 and the second intelligent blackboard 20 and the interactive all-in-one machine 30, and the control devices and the main controller respectively control the first display device and the second display device to perform display.
The intelligent comprehensive screen blackboard of the embodiment can realize synchronous display of the intelligent blackboard and the interactive all-in-one machine 30 and separate screen display, and realizes the functions of independent display of the intelligent blackboard and synchronous display of the interactive all-in-one machine by switching two modes of screen separation and screen sharing. Specifically, the touch screen 11 disposed on the front surface of the first intelligent blackboard 10 and the touch screen 21 disposed on the front surface of the first intelligent blackboard 20 are connected to a main controller (OPS computer) of the integrated interactive device 30 through USB data lines, in the same-screen mode, on one hand, when writing in the writing touch screen area 101(201), the touch screen 11(21) collects the writing tracks in the writing touch screen area 101(201) into data packets in a custom format in real time, and transmits the data packets to the OPS computer of the integrated interactive device 30 through a USB protocol, and the application software (sctitoe) of the integrated interactive device 30 parses the data packets transmitted to the OPS computer into information of points corresponding to the position of the integrated device 30, and draws the point information into a complete writing track through an algorithm, that is, the writing tracks in the writing touch screen area 101 and the writing touch screen area 201 are respectively in the first display area 32, the second display area, the third display area, and the fourth display area, The second display area 33 is displayed, thereby realizing synchronous display of the writing touch screen area 101 and the first display area 32, and the writing touch screen area 201 and the second display area 33.
On the other hand, when the function keys 12 and 22 are pressed, the first intelligent blackboard 10 and the second intelligent blackboard 20 transmit data packets with a custom format to the OPS computer of the interactive all-in-one machine 30 through the USB protocol while executing functions, and the application software (sctinite) of the interactive all-in-one machine 30 parses the data packets transmitted to the OPS computer into function modules corresponding to the data packets, so that the interactive all-in-one machine 30 is controlled by pressing the function keys 12 and 22, and the function keys 12 and the function keys of the first display area 32, and the function keys 22 and the function keys of the second display area 33 are synchronously controlled.
In the split-screen mode, the mode switching function key in the function keys 12 and 22 can realize the switching between the synchronous display mode and the split-screen display mode through the shortcut key touch screen area 102(202), and when the state is switched to the split-screen mode, the first intelligent blackboard 10, the first intelligent blackboard 20 and the interactive all-in-one machine 30 independently collect respective data respectively without entering any data communication.
Referring to fig. 4 and 5, fig. 4 is a flowchart of a control method of the intelligent full-screen blackboard according to the embodiment of the present invention, and fig. 5 is a block diagram of a control system of the intelligent full-screen blackboard according to the embodiment of the present invention.
The control method comprises the following steps:
step S101, a control device collects data information operated by a user on an intelligent blackboard in real time and forms a data packet, wherein the data information can be writing track information collected from a touch sensing device of the intelligent blackboard and click information collected from a function key device of the intelligent blackboard, the control device collects content information such as writing pictures and texts on a touch screen 11(21) of the user through the touch sensing device in real time, and the control device also comprises trigger information clicked by the user to operate a function key 12(22) and the like; step S102, the control device analyzes the collected data information; step S103, the control device identifies a first operation instruction in the data information and sends the first operation instruction to a first display device, wherein the first operation instruction can be a display instruction or a function instruction; step S104, the first display device responds to the first operation instruction and executes the instruction content, i.e. displaying the graphics or performing the function.
The above steps S101 to S104 are control steps in which the intelligent blackboard operates independently in the split-screen mode, and the first intelligent blackboard 10, the first intelligent blackboard 20, and the interactive all-in-one machine 30 collect their respective data independently, and do not enter any data communication with each other.
When switching to the on-screen mode, the method further comprises the following steps: step S105, the control device transmits the formed data packet to a main controller of the interactive all-in-one machine 30, specifically, the data packet may be transmitted to the main controller through a USB protocol; step S106, the main controller receives the data packet; step S107, the main controller analyzes the received data packet into operation information of a module corresponding to the second display device, specifically, for a data packet formed by writing track information, the main controller analyzes the data packet into point information corresponding to a display module of the second display device through whiteboard application software, and draws the point information into a complete writing track through an algorithm, and for a data packet formed by trigger information clicked by the function key 12(22), the main controller analyzes the data packet into function information corresponding to a function module of the second display device through the whiteboard application software; step S108, the main controller identifies a second operation instruction in the operation information and sends the second operation instruction to a second display device, wherein the second operation instruction can be a display instruction or a function instruction; in step S109, the second display device responds to the second operation instruction and executes the instruction content, i.e. displaying the graphics or performing the function.
When the state is switched to the split screen mode, the first intelligent blackboard 10, the first intelligent blackboard 20 and the interactive all-in-one machine 30 independently collect respective data respectively, and do not enter any data communication with each other.
The control system corresponding to the control method is provided as follows: the intelligence blackboard includes: the data acquisition module 401(501) is used for acquiring data information operated by a user on the intelligent blackboard in real time and forming a data packet; a first processing module 402(502) for parsing the data information; a first identification module 403(503) configured to identify a first operation instruction in the data information; a first sending module 404(504) configured to send the first operation instruction to the first display device; the first executing module 405(505) is configured to respond to the first operating instruction and execute the instruction content when the first display device receives the first operating instruction; the aforesaid is the control module of intelligent blackboard independent work under the split screen mode, still includes when switching to with the screen mode: a data transmission module 406(506) for transmitting the data packet formed by the acquired data information to the main controller of the interactive all-in-one machine 30; the interactive all-in-one machine comprises: a data receiving module 601, configured to receive the data packet transmitted by the data transmitting module 406(506), where the data receiving module 601 is connected to the data transmitting module 406(506) through a USB data line; a second processing module 602, configured to parse the data packet; a second identifying module 603, configured to identify a second operation instruction in the parsed data packet; a second sending module 604, configured to send a second operation instruction to a second display device; the second executing module 605 is configured to respond to the second operation instruction and execute the instruction content when the second display device receives the second operation instruction. The first execution module 405(505) executes the content of the instruction in synchronization with the second execution module 605, where the execution of the same content of the instruction is performed in different region modules, and the execution may be performed at the same time, but is allowed to be performed within a preset time tolerance.
In addition, the second processing module 602 includes a first parsing unit for parsing the data packet into point information corresponding to a display module of the second display apparatus, and the second processing module 602 further includes a second parsing unit for parsing the data packet into function information corresponding to a function module of the second display apparatus.
In addition, the triggering information clicked by the functional keys 12(22) at least includes mode switching information, the mode switching information includes split-screen display information and on-screen display information, and the mode switching information includes split-screen display information and on-screen display information, which is used for realizing that the intelligent comprehensive-screen blackboard of the embodiment can realize synchronous display and split-screen display by pressing the mode switching functional keys of the functional keys 12 (22).
In the multi-screen display control method and the system for the intelligent full-screen blackboard of the embodiment, when the control device of the intelligent blackboard receives writing track information acquired from the touch sensing device or click information acquired from the function key device, an operation instruction is recognized and the first display device is driven to display correspondingly, meanwhile, if the information is in the same screen mode, the control device can acquire the information into a data packet and send the data packet to the main controller of the interactive all-in-one machine 30, and the main controller receives and analyzes the data packet and also recognizes the operation instruction and drives the second display device to display; if the screen is in the split screen mode, the intelligent blackboard does not interact with the interactive all-in-one machine 30, and the intelligent blackboard and the interactive all-in-one machine 30 are displayed independently; the functions of independent display of the intelligent blackboard and synchronous display of the intelligent blackboard and the interactive all-in-one machine 30 are realized by switching the split screen mode and the same screen mode. The multi-screen display control method and the multi-screen display control system for the intelligent comprehensive screen blackboard solve the technical problems of chalk pollution, inconvenient processing of teaching contents and poor using effect caused by the existing teaching blackboard, enrich the functions of the teaching blackboard, are convenient and fast to use and good in effect, and further achieve the effect of improving the teaching quality.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. A multi-screen display control method for an intelligent full-screen blackboard is characterized in that the intelligent full-screen blackboard comprises an intelligent blackboard and an interactive all-in-one machine, the intelligent blackboard comprises a control device and a first display device connected with the control device, and the interactive all-in-one machine comprises a main controller and a second display device connected with the main controller;
the control method comprises the following steps:
the control device collects data information operated by a user on the intelligent blackboard in real time and forms a data packet with a custom format;
the control device analyzes the data information, identifies a first operation instruction in the data information and sends the first operation instruction to the first display device;
the first display device responds to the first operation instruction and executes instruction content, and displays pictures and texts or executes functions;
the data information comprises writing track information acquired from a touch sensing device of the intelligent blackboard and/or click information acquired from a function key device of the intelligent blackboard;
the control method further comprises the following steps:
the control device transmits the data packet with the custom format to the main controller through a USB protocol;
the main controller receives the data packet with the custom format;
the main controller analyzes the data packet with the custom format into operation information of a module corresponding to the second display device, and the steps comprise: the main controller analyzes the data packet with the custom format into point information corresponding to a display module of the second display device through whiteboard application software, and/or analyzes the data packet with the custom format into function information corresponding to a function module of the second display device;
the main controller identifies a second operation instruction in the operation information and sends the second operation instruction to the second display device;
and the second display device responds to the second operation instruction and executes instruction content to display pictures and texts or execute functions.
2. A multi-screen display control system for an intelligent full-screen blackboard is characterized in that the intelligent full-screen blackboard comprises an intelligent blackboard and an interactive all-in-one machine, the intelligent blackboard comprises a first display device, and the interactive all-in-one machine comprises a main controller and a second display device connected with the main controller;
the intelligent blackboard further comprises:
the data acquisition module is used for acquiring data information operated by a user on the intelligent blackboard in real time and forming a data packet with a custom format, wherein the data information comprises writing track information acquired from a writing touch screen of the intelligent blackboard and/or click information acquired from a function key area of the intelligent blackboard;
the first processing module is used for analyzing the data information;
the first identification module is used for identifying a first operation instruction in the data information;
the first sending module is used for sending the first operation instruction to the first display device;
the first execution module is used for responding to the first operation instruction and executing instruction content when the first display device receives the first operation instruction;
the data transmission module is used for transmitting the data packet with the custom format to the main controller;
the interactive all-in-one machine further comprises:
the data transmission module is connected with the data receiving module through a USB data line;
the second processing module comprises a first analysis unit and a second analysis unit;
the first analysis unit is used for analyzing the data packet with the custom format into point information corresponding to a display module of the second display device;
the second analysis unit is used for analyzing the data packet with the custom format into function information corresponding to the function module of the second display device;
the second identification module is used for identifying a second operation instruction in the analyzed data packet with the custom format;
the second sending module is used for sending the second operation instruction to the second display device;
and the second execution module is used for responding to the second operation instruction and executing instruction content when the second display device receives the second operation instruction.
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| CN109542008B true CN109542008B (en) | 2022-08-09 |
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| CN201811445514.2A Pending CN109377789A (en) | 2018-10-26 | 2018-11-29 | A combined intelligent full-screen blackboard |
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| CN113504852B (en) | 2024-12-31 |
| CN109542008A (en) | 2019-03-29 |
| CN110473433A (en) | 2019-11-19 |
| WO2020083042A1 (en) | 2020-04-30 |
| WO2020083041A1 (en) | 2020-04-30 |
| CN109377789A (en) | 2019-02-22 |
| CN209879763U (en) | 2019-12-31 |
| CN110471640B (en) | 2023-03-31 |
| CN109597598A (en) | 2019-04-09 |
| CN113504852A (en) | 2021-10-15 |
| CN110473433B (en) | 2022-04-19 |
| CN110362228A (en) | 2019-10-22 |
| CN210348836U (en) | 2020-04-17 |
| CN109509375A (en) | 2019-03-22 |
| CN109509375B (en) | 2021-07-23 |
| CN110471640A (en) | 2019-11-19 |
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