Infrared memory blackboard and interactive control method of blackboard writing content and display content

Abstract

The present invention discloses an infrared memory blackboard and a method for interactively controlling the writing content and display content of the blackboard, belonging to the technical field of intelligent electronic blackboards. It includes a first flexible rotating blackboard, a display blackboard, an infrared transmitter and an infrared receiver; the first flexible rotating blackboard is arranged on the side of the display blackboard and connected to the display blackboard; the infrared transmitter and the infrared receiver are arranged at one end and the other end of the blackboard respectively; the first flexible rotating blackboard includes a bracket, an annular flexible writing screen, a driving shaft, and a driven shaft; the driving shaft and the driven shaft are arranged parallel to the bracket, the flexible writing screen is stretched outside the driving shaft and the driven shaft and is rollingly connected to the driving shaft and the driven shaft; the writing area on one side of the flexible writing screen is smaller than the display area on one side of the display blackboard. The present invention can improve the writing and display efficiency of the intelligent blackboard, improve the possibility of dynamic interaction, and optimize the viewer's experience.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent electronic blackboards, and more specifically, relates to an infrared memory blackboard and a method for interactively controlling the writing content and the display content of the blackboard. Background Art

[0002] With the increasing popularity of electronic intelligent products, the educational equipment industry is undergoing technological changes. Smart memory blackboards include three-piece blackboards and infrared frames. The middle blackboard is mostly a large-size touch display device. The side blackboards are generally two pieces, and are symmetrically set on both sides of the middle. The infrared frame is set on the front surface of the three-piece blackboard, and infrared light strips are set in the surrounding frames, and an orthogonal longitude and latitude grid is formed on the touch screen to realize the recognition of touch points. Generally speaking, the existing smart blackboards have the following two problems: ①, the writing area of ​​the blackboards on both sides is fixed and cannot be expanded; ②, the writing content of the blackboard is fixed and cannot form a full-screen seamless blackboard on the touch screen.

[0003] After searching, Chinese utility model patent CN211124008U discloses a spliced ​​smart blackboard with infrared touch, in which writing boards are spliced ​​on both sides of the display screen, and an infrared light bar is arranged on the frame outside the writing board. The light emitted by the two infrared light strips intersect each other obliquely on the surface of the blackboard body to form an infrared light grid, thereby realizing infrared touch control of the smart blackboard; an infrared transmitter is arranged on the lower frame of the display screen, and the infrared transmitter can emit infrared light in multiple directions, and an infrared receiving light strip that can receive at least part of the infrared light emitted by the infrared transmitter is arranged on the frame on the upper side of the writing board, so that an infrared light grid is also formed at the upper corner of the writing board, thereby eliminating the writing blind spot at this position. While increasing the effective area of ​​the infrared touch of the smart blackboard, the cost can also be reduced by not setting the infrared light bar on the frame of the display screen. Although this patent changes the traditional orthogonal infrared light network and creatively proposes a mutually oblique infrared light network, so that most areas of the writing board can form an infrared light network, thereby eliminating writing blind spots and improving writing and imaging efficiency; however, this patent still has two problems: first, after writing on the writing board on the side of the display screen, it must be completely wiped before writing the second side. This results in that even if the display area of ​​the display screen is larger than the writing area of ​​the writing board, the content written twice on the writing board cannot be directly displayed on the display screen, and the display area of ​​the display screen is large but useless; second, even if the written content on the writing board is displayed on the display screen through infrared imaging, the written content can only be displayed on the display screen once, and cannot interact with the displayed content on the display screen. This will appear very monotonous when used in education or meetings.

[0004] After searching, Chinese invention patent CN111752419A discloses an interactive control method, device, smart blackboard and storage medium of a smart blackboard, wherein the smart blackboard includes a touch module, at least one first blackboard area and at least one second blackboard area, a display screen is installed in the first blackboard area, and the touch module is used to detect touch operations on the first blackboard area and the second blackboard area. The method includes: receiving a first touch operation on the second blackboard area; when the first touch operation is a writing operation, displaying a touch track corresponding to the writing operation on the display screen; when the first touch operation is a non-writing operation, responding according to the response strategy of the non-writing operation, and displaying a display screen corresponding to the non-writing operation on the display screen. Although the interactive control method of this patent realizes the interaction between the writing area and the display area on the blackboard, and solves the technical problem that data interaction cannot be performed between the traditional blackboard and the electronic device in the prior art smart blackboard; however, the smart blackboard and its control method in this patent still have some defects. For example, the patent states that "the non-writing operation is at least one of an erasing operation, a shortcut function triggering operation, a teaching aid use operation, and a gesture control operation". This combination of writing and non-writing operations can indeed realize the interaction between the writing area and the non-writing area of ​​the blackboard, but this can only realize interactions related to touch operations, which is reflected in the display content as the inability to dynamically display the written content, and the inability to realize the interaction between dynamic content and static content. Therefore, there are certain interactive limitations, resulting in a poor viewer experience.

[0005] In summary, although there are some blackboards with increased writing area or display area, and control methods for realizing interaction between writing area and display area on the blackboard in the prior art, these cannot realize direct display of content written multiple times on the display screen, nor can they realize dynamic interaction of displayed content. Therefore, it is urgent to design a smart blackboard and control method that can effectively increase the writing display area and realize dynamic interaction. Summary of the invention

[0006] 1. Problem to be solved

[0007] In view of the problem that the smart blackboard in the prior art cannot directly display the content written multiple times on the display screen and cannot realize dynamic interaction of the displayed content, the present invention provides an infrared memory blackboard and a method for interactive control of blackboard writing content and display content; by combining a flexible rotating blackboard, a display blackboard and infrared, the contents of the flexible rotating blackboard are displayed on the display blackboard using infrared, thereby effectively solving the problem that the content written multiple times cannot be directly displayed on the display screen and cannot realize dynamic interaction of the displayed content.

[0008] 2. Technical solution

[0009] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0010] The infrared memory blackboard of the present invention comprises a first flexible rotating blackboard, a display blackboard, an infrared transmitter and an infrared receiver; the first flexible rotating blackboard is arranged on the side of the display blackboard and is connected to the display blackboard; the infrared transmitter and the infrared receiver are respectively arranged at one end and the other end of the blackboard, the infrared transmitter is used to form an intersecting infrared light network on the surface of the blackboard, and the infrared receiver can receive the infrared light emitted by the infrared transmitter; the first flexible rotating blackboard comprises a bracket, an annular flexible writing screen, a driving shaft, and a driven shaft; the driving shaft and the driven shaft are arranged in parallel on the bracket, the flexible writing screen is stretched outside the driving shaft and the driven shaft and is rollingly connected with the driving shaft and the driven shaft; the writing area on one side of the flexible writing screen is smaller than the display area on one side of the display blackboard.

[0011] Preferably, the infrared transmitter includes a first infrared transmitting light bar and a second infrared transmitting light bar, and the infrared receiver includes a first infrared receiving light bar and a second infrared receiving light bar; the first infrared transmitting light bar, the second infrared transmitting light bar, the first infrared receiving light bar and the second infrared receiving light bar are connected end to end to form an infrared light frame, and the shape of the infrared light frame is adapted to the edge of the blackboard and is arranged on the edge of the blackboard; the first infrared receiving light bar receives the infrared light emitted by the first infrared transmitting light bar, and the second infrared receiving light bar receives the infrared light emitted by the second infrared transmitting light bar; the infrared light emitted by the first infrared transmitting light bar and the second infrared transmitting light bar form an infrared light network that intersects each other obliquely on the surface of the blackboard. The present invention adopts a full-frame infrared light frame to cover the entire writing area of ​​the blackboard without dead angles for collection.

[0012] Preferably, the first flexible rotating blackboard further includes a support plate; the support plate is arranged on the inner side of the writing plane of the flexible writing screen and is arranged parallel to the flexible writing screen.

[0013] Preferably, the first flexible rotating blackboard further comprises a driving mechanism, which is disposed on the bracket and connected to the support plate, and is used for driving the support plate to approach or move away from the writing plane of the flexible writing screen.

[0014] Preferably, the driving mechanism is a driving motor, the output shaft of the driving motor is the driving motor output shaft, an eccentric shaft is provided on the driving motor output shaft, and the rotation plane of the eccentric shaft is perpendicular to the flexible writing screen; a first connecting member is provided on the side of the support plate away from the writing plane of the flexible writing screen, and a first through hole is provided on the first connecting member; the eccentric shaft is passed through the first through hole.

[0015] Preferably, the first flexible rotating blackboard further comprises reinforcing ribs, which are arranged on a side of the support plate away from the writing plane and mounted on a bracket; the driving mechanism is mounted on the reinforcing ribs.

[0016] Preferably, a guide rod is further provided on the support plate; a through hole is provided on the reinforcing rib, the guide rod is passed through the through hole and is slidably connected to the reinforcing rib, and its sliding direction is perpendicular to the writing plane of the flexible writing screen.

[0017] Preferably, it also includes a second flexible rotating blackboard, the structure of the second flexible rotating blackboard is the same as that of the first flexible rotating blackboard; the second flexible rotating blackboard is arranged on the display blackboard on one side relative to the first flexible rotating blackboard, the first flexible rotating blackboard and the second flexible rotating blackboard are symmetrically arranged, and the display blackboard is the middle blackboard.

[0018] Preferably, the flexible rotating blackboard also includes a rotating motor; the rotating motor is installed on a bracket, and its output shaft is connected to a driving shaft, and the rotating motor is used to drive the driving shaft to rotate and drive the flexible writing screen to scroll.

[0019] Preferably, it also includes a data processor, a wireless communicator and a server; the rotating motor, the infrared transmitter and the infrared receiver are electrically connected to the data processor respectively; the wireless communicator is connected to the data processor, and the server is communicatively connected to the wireless communicator.

[0020] The invention discloses a method for interactively controlling the writing content and the display content on a blackboard. Based on the infrared memory blackboard described in the invention, when writing content on the flexible writing screen of the flexible rotating blackboard, infrared is used to display the same content as the writing content on the display blackboard.

[0021] When the flexible writing screen of the flexible rotating blackboard is rotated, if the display blackboard is completely locked, the display blackboard displays its display content alone; if the display blackboard is not completely locked, the unlocked part of the display blackboard moves synchronously to display the content on the flexible writing screen.

[0022] It should be noted that the display content on the display blackboard in the present invention has three states: the display content is completely immovable, part of the display content can be moved, and all the display content can be moved. When the display blackboard is not completely locked, it includes two situations: partially locked and not partially locked, wherein the display content of the display blackboard when partially locked can be partially moved, and the display content of the display blackboard when not partially locked can be moved.

[0023] In addition, the two operations of writing content on the flexible writing screen and rotating the flexible writing screen can be performed separately or simultaneously. In order to avoid friction caused by rotation, it is preferred to perform the operations separately. For performing the operations separately, the writing and rotating operations can be performed sequentially and at intervals, and the time and deflection displacement of each operation can be refined, so that the writing and rotation appear to be continuously and simultaneously performed on a macro scale; a single writing operation and a rotation operation can also be combined. The present invention does not specifically limit the time, sequence and combination of the writing operation and the rotation operation, and the above possible operations are all within the protection scope of the present invention.

[0024] Preferably, when rotating the flexible writing screen, if the display blackboard is not completely locked, it is determined whether the display blackboard is partially locked: if the display blackboard is partially locked, the written content on the flexible writing screen is displayed on the display blackboard through synchronous movement, and interacts with the locked display content on the display blackboard; if the display blackboard is not partially locked, the written content on the flexible writing screen is continuously displayed as the display content of the display blackboard through synchronous movement.

[0025] Preferably, when the display blackboard is partially locked, the display content on the display blackboard includes a locking area and a moving area, and the moving area is formed by displaying the written content on the flexible writing screen on the display blackboard through synchronous movement; the locking area and the moving area interact by overlapping or combining.

[0026] Preferably, when the display blackboard is not partially locked, the display content on the display blackboard includes a moving area, and the moving area includes an asynchronous display area and a synchronous display area, wherein the display content of the synchronous display area is the writing content on one side of the flexible writing screen; the asynchronous display area and the synchronous display area have the same movement speed and are displayed in a connected manner.

[0027] Preferably, the synchronous movement includes a complete offset and / or a specified offset; the complete offset means that the single offset of the content displayed on the blackboard is not less than the writing area on one side of the flexible writing screen; the specified offset means that the single offset of the content displayed on the blackboard is less than the writing area on one side of the flexible writing screen.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) An infrared memory blackboard of the present invention comprises a first flexible rotating blackboard, a display blackboard, an infrared transmitter and an infrared receiver; the first flexible rotating blackboard is arranged on the side of the display blackboard and is connected to the display blackboard; the infrared transmitter and the infrared receiver are arranged at one end and the other end of the blackboard respectively, the infrared transmitter is used to form an intersecting infrared light network on the surface of the blackboard, and the infrared receiver can receive the infrared light emitted by the infrared transmitter; the first flexible rotating blackboard comprises a bracket, an annular flexible writing screen, a driving shaft, and a driven shaft; the driving shaft and the driven shaft are arranged in parallel on the bracket, the flexible writing screen is stretched outside the driving shaft and the driven shaft and is rollingly connected to the driving shaft and the driven shaft; the writing area on one side of the flexible writing screen is smaller than the display blackboard. The display area on one side of the display blackboard; through the above-mentioned arrangement, the flexible rotating blackboard can effectively expand the writing area without changing the size of the blackboard. At the same time, since the writing area on one side of the flexible writing screen in the present invention is smaller than the display area on one side of the display blackboard, the written content on the flexible rotating blackboard can be fully displayed on the display blackboard through infrared. Moreover, due to the rotatable characteristics of the flexible writing screen, only one side of the flexible rotating blackboard needs to be written on to display the content exceeding the area on one side of the flexible rotating blackboard on the display blackboard. This solves the problem that the existing smart blackboard needs to be completely wiped before the second side can be written, and avoids the problem that the writer needs to write across the entire display blackboard to display the complete blackboard writing, thereby effectively improving the writing and display efficiency of the smart blackboard.

[0031] (2) A method for interactively controlling the written content and the displayed content on a blackboard of the present invention is based on an infrared memory blackboard described in the present invention. When writing content on the flexible writing screen of the flexible rotating blackboard, infrared is used to display the same content as the written content on the display blackboard; when the flexible writing screen of the flexible rotating blackboard is rotated, if the display blackboard is completely locked, the display blackboard displays its displayed content alone; if the display blackboard is not completely locked, the unlocked part of the display blackboard moves synchronously to display the content on the flexible writing screen; through the above method, when the display blackboard is completely locked, its displayed content is completely immovable, so the content on the flexible rotating blackboard and the content on the display blackboard are independent of each other, and the display blackboard displays its displayed content alone; and when the display blackboard is not completely locked, the other two states of the displayed content on the display blackboard of the present invention are included, namely, part of the displayed content can be moved, and the displayed content can be completely moved. At this time, the movable displayed content can be dynamically displayed or interacted, thereby solving the problem that the written content and the displayed content on the smart blackboard cannot effectively interact, improving the possibility of dynamic interaction, and optimizing the viewer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a method for interactively controlling writing content and display content on a blackboard according to the present invention;

[0033] Figure 2 This is a schematic diagram of an infrared memory blackboard decomposition of the present invention;

[0034] Figure 3 A kind of infrared memory blackboard main view of the present invention Figure Ⅰ ;

[0035] Figure 4 A schematic diagram of an infrared memory blackboard and an infrared light network of the present invention;

[0036] Figure 5 A kind of infrared memory blackboard main view of the present invention Figure II ;

[0037] Figure 6 It is a schematic diagram of the flexible rotating blackboard of the present invention;

[0038] Figure 7 It is a transverse cross-sectional view of the flexible rotating blackboard of the present invention;

[0039] Figure 8 The flexible rotating blackboard of the present invention is longitudinally cut away Figure Ⅰ ;

[0040] Fig. 9 The flexible rotating blackboard of the present invention is longitudinally cut away Figure II ;

[0041] Fig.10 A schematic diagram showing the dynamic interaction when the blackboard is partially locked;

[0042] Fig.11 A schematic diagram showing the dynamic display when the blackboard is not partially locked;

[0043] Fig.12 To show the schematic diagram of the complete offset of the contents displayed on the blackboard;

[0044] Fig.13 Specify an offset diagram for displaying the contents on the blackboard;

[0045] Fig.14 The figure is a connection diagram of an infrared memory blackboard of the present invention.

[0046] In the figure:

[0047] 100, first flexible rotating blackboard; 110, driving shaft; 111, rotating motor; 120, driven shaft; 130, supporting plate; 131, first connecting member; 1311, first through hole; 132, guide rod; 140, reinforcing rib; 150, driving mechanism; 151, driving motor output shaft; 152, eccentric shaft; 160, bracket; 170, flexible writing screen;

[0048] 200, display blackboard; 201, lock area; 202, mobile area; 2021, asynchronous display area; 2022, synchronous display area;

[0049] 300, second flexible rotating blackboard;

[0050] 400, infrared light frame; 410, first infrared emitting light bar; 420, second infrared emitting light bar; 430, first infrared receiving light bar; 440, second infrared receiving light bar;

[0051] 500. Data processor;

[0052] 600, wireless communicator;

[0053] 700. Server. DETAILED DESCRIPTION

[0054] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form a part of the description, in which exemplary embodiments of the present invention are shown as examples, wherein the features of the present invention are identified by reference numerals. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best way to perform the present invention, and is sufficient to enable those skilled in the art to implement the present invention. However, it should be understood that various modifications and variations may be made without departing from the scope of the present invention as defined by the appended claims. The detailed description and the accompanying drawings should be considered only as illustrative, not restrictive, and if there are any such modifications and variations, they will all fall within the scope of the present invention described herein. In addition, the background technology is intended to illustrate the current status and significance of the research and development of the present technology, and is not intended to limit the present invention or the application field of the present application and the present invention.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0056] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may also be an element in the middle; when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element in the middle; the terms "one end", "the other end", "parallel", "vertical" and similar expressions used in this article are for illustrative purposes only.

[0057] The present invention is further described below in conjunction with specific embodiments.

[0058] Example

[0059] This embodiment provides an infrared memory blackboard, such as Figure 2-3 As shown, it includes a first flexible rotating blackboard 100, a display blackboard 200, a second flexible rotating blackboard 300, an infrared light frame 400, a data processor 500, a wireless communicator 600 and a server 700; Fig.14 As shown, the wireless communicator 600 is connected to the data processor 500 , and the server 700 is in communication connection with the wireless communicator 600 .

[0060] As another embodiment of the present invention, Figure 5 As shown, the second flexible rotating blackboard 300 can be removed from the infrared memory blackboard, and the first flexible rotating blackboard 100 and the display blackboard 200 can be used in combination, which can also achieve the technical effect of the present invention.

[0061] In the above infrared memory blackboard, the first flexible rotating blackboard 100 is arranged on the side of the display blackboard 200 and connected to the display blackboard 200, the second flexible rotating blackboard 300 is arranged on the display blackboard 200 on the side opposite to the first flexible rotating blackboard 100, the first flexible rotating blackboard 100 and the second flexible rotating blackboard 300 are arranged symmetrically, and the display blackboard 200 is the middle blackboard. In addition, the blackboard is also provided with an infrared transmitter and an infrared receiver, such as Fig.14 As shown, the infrared transmitter and the infrared receiver are electrically connected to the data processor 500 respectively; the infrared transmitter in this embodiment includes a first infrared transmitting light bar 410 and a second infrared transmitting light bar 420, and the infrared receiver includes a first infrared receiving light bar 430 and a second infrared receiving light bar 440, so each infrared light bar is electrically connected to the data processor 500; the first infrared transmitting light bar 410, the second infrared transmitting light bar 420, the first infrared receiving light bar 430 and the second infrared receiving light bar 440 are connected end to end in sequence to form an infrared light frame 400, and the shape of the infrared light frame 400 is adapted to the edge of the blackboard and is arranged on the edge of the blackboard; the first infrared receiving light bar 430 receives the infrared light emitted by the first infrared transmitting light bar 410, and the second infrared receiving light bar 440 receives the infrared light emitted by the second infrared transmitting light bar 420; as shown Figure 4 As shown, the infrared rays emitted by the first infrared emitting light bar 410 and the second infrared emitting light bar 420 form an infrared ray network that is mutually obliquely crossed on the surface of the blackboard.

[0062] In this embodiment, the structure of the second flexible rotating blackboard 300 is the same as that of the first flexible rotating blackboard 100. Figure 6 to Figure 9As shown, the first flexible rotating blackboard 100 includes a driving shaft 110 , a rotating motor 111 , a driven shaft 120 , a supporting plate 130 , reinforcing ribs 140 , a driving mechanism 150 , a bracket 160 and an annular flexible writing screen 170 . The driving shaft 110 and the driven shaft 120 are arranged in parallel on the bracket, and the flexible writing screen 170 is stretched outside the driving shaft 110 and the driven shaft 120 and is rollingly connected with the driving shaft 110 and the driven shaft 120; the writing area on one side of the flexible writing screen 170 is smaller than the display area on one side of the display blackboard 200; the rotating motor 111 is installed on the bracket 160, and its output shaft is connected to the driving shaft 110. The rotating motor 111 is used to drive the driving shaft 110 to rotate and drive the flexible writing screen 170 to roll. In order to realize the subsequent interactive control method, the rotating motor 111 in this embodiment is electrically connected to the data processor 500. The rotation of the flexible writing screen 170 can be controlled by physical buttons, virtual buttons or remote control, and the rotation signal is transmitted to the data processor 500, and then the server 700 controls the rotation of the rotating motor 111 and / or the infrared imaging on the blackboard surface.

[0063] More specifically, if Figure 7 to Figure 9 As shown, the support plate 130 is arranged inside the writing plane of the flexible writing screen 170 and is arranged parallel to the flexible writing screen 170. The driving mechanism 150 is arranged on the bracket 160 and connected to the support plate 130. The driving mechanism 150 is used to drive the support plate 130 to approach or move away from the writing plane of the flexible writing screen 170; Fig. 9 As shown, when writing is required, the support plate 130 can be driven to be parallel to and fit the writing plane of the flexible writing screen 170. Under the support of the support plate 130, the flatness of the writing plane can be ensured, thereby improving the writing efficiency. When the flexible writing screen 170 needs to be rotated, as shown in FIG. Figure 7 or Figure 8As shown, it is preferred to drive the support plate 130 away from the writing plane of the flexible writing screen 170 to avoid friction between the flexible writing screen 170 and the support plate 130 and thus prevent damage thereto. The output shaft of the driving motor is the driving motor output shaft 151, and an eccentric shaft 152 is provided on the driving motor output shaft 151, and the rotation plane of the eccentric shaft 152 is perpendicular to the flexible writing screen 170; a first connecting member 131 is provided on the side of the writing plane of the supporting plate 130 away from the flexible writing screen 170, and a first through hole 1311 is provided on the first connecting member 131; the eccentric shaft 152 is passed through the first through hole 1311; wherein the rotation of the eccentric shaft 152 can produce displacement in the vertical direction of the supporting plate 130, so passing the eccentric shaft 152 through the first through hole 1311 on the first connecting member 131 can drive the supporting plate 130 to reciprocate perpendicular to the direction of the supporting plate 130, and by reasonably adjusting the position of the eccentric shaft 152, the distance between the writing planes of the supporting plate 130 and the flexible writing screen 170 can be effectively adjusted, thereby improving the stability of writing or rotation. The reinforcing rib 140 is arranged on the side of the support plate 130 away from the writing plane and is installed on the bracket 160; the driving mechanism 150 is installed on the reinforcing rib 140. In addition, the support plate 130 is also provided with a guide rod 132; the reinforcing rib 140 is provided with a through hole, the guide rod 132 is penetrated in the through hole and is slidably connected with the reinforcing rib 140, and its sliding direction is perpendicular to the writing plane of the flexible writing screen 170. The guide rod 132 is used to provide a guiding effect for the support plate 130 to move away from or approach the flexible writing screen 170.

[0064] In addition, based on the infrared memory blackboard described above, this embodiment also provides a method for interactively controlling the writing content and the display content of the blackboard, such as Figure 1As shown, when writing content on the flexible writing screen 170 of the flexible rotating blackboard, the flexible writing screen 170 stops, and infrared is used to display the same content as the written content on the display blackboard 200. When the flexible writing screen 170 of the flexible rotating blackboard is rotated, a rotation command is initiated to the rotating motor 111, and the authority of the sender of the command is verified. If the sender has the authority to operate the rotation of the rotating motor 111, the operation corresponding to the command is performed on the rotating motor 111 according to the command. At the same time, if the display blackboard 200 is completely locked, the display blackboard 200 displays its display content alone. If the display blackboard 200 is not completely locked, the display information of the display blackboard 200 is also offset according to the command, and the unlocked part of the display blackboard 200 is synchronously moved to display the content on the flexible writing screen 170; if the display blackboard 200 is not completely locked, it is further determined whether the display blackboard 200 is partially locked: if the display blackboard 200 is partially locked, the written content on the flexible writing screen 170 is displayed on the display blackboard 200 through synchronous movement, and interacts with the locked display content on the display blackboard 200; if the display blackboard 200 is not partially locked, the written content on the flexible writing screen 170 is continuously displayed as the display content of the display blackboard 200 through synchronous movement. When any of the above interactive operations is completed, the rotating motor 111 stops rotating, and the next interactive operation is continued or the demonstration is completed.

[0065] As one of the embodiments of the present invention, when the flexible writing screen 170 of the flexible rotating blackboard is rotated, the display blackboard 200 is partially locked. At this time, the display content on the display blackboard 200 can be divided into a locking area 201 and a moving area 202. The moving area 202 is formed by displaying the writing content on the flexible writing screen 170 on the display blackboard 200 through synchronous movement; the locking area 201 and the moving area 202 interact by overlapping or combining. For example Fig.10In the "visual illusion" demonstration shown, the content of the locking area 201 is fixed on the display blackboard 200 and does not move, while the content of the moving area 202 is formed by the writing content on the flexible writing screen 170 being synchronously displayed on the display blackboard 200, and the content of this area can be translated on the display blackboard 200 as the flexible writing screen 170 rotates. This gives the illusion that the length of the moving area 202 is greater than the length of the locking area 201 before the locking area 201 and the moving area 202 overlap, and when the locking area 201 and the moving area 202 gradually overlap, the lengths of the two are the same. Therefore, the demonstrator not only needs to demonstrate the state of the locking area 201 and the moving area 202 before and after the overlap or combination in the figure, but also needs to dynamically display the overlapping or combination process. This dynamic demonstration through the interactive control method of the present invention has a more visual contrast effect, thereby optimizing the viewer's experience. It should be noted that the above "visual illusion" demonstration is only an example of the interaction between the locking area 201 and the moving area 202 in this implementation mode, and does not limit the scope of the present invention. In the actual demonstration, the locking area 201 and the moving area 202 overlap or combine in various ways. As long as the dynamic interaction between the locking area 201 and the moving area 202 can be achieved, it is within the protection scope of the present invention.

[0066] As a second embodiment of the present invention, when the flexible writing screen 170 of the flexible rotating blackboard is rotated, the display blackboard 200 is not partially locked, and the display content on the display blackboard 200 includes a moving area 202, and the moving area 202 includes an asynchronous display area 2021 and a synchronous display area 2022, wherein the display content of the synchronous display area 2022 is the writing content on one side of the flexible writing screen 170; the asynchronous display area 2021 and the synchronous display area 2022 have the same moving speed and are displayed in a continuous manner. Fig.11 As shown, the area of ​​the display blackboard 200 in this embodiment is twice the single-sided writing area of ​​the flexible writing screen 170, and the horizontal lengths thereof are 2 meters and 1 meter respectively. During the rotation of the flexible writing screen 170, the synchronous display area 2022 always displays the writing content on one side of the flexible writing screen 170, and the portion exceeding the single-sided writing area of ​​the flexible writing screen 170 will move synchronously on the display blackboard 200 with the rotation of the flexible writing screen 170. This embodiment has the following technical effects: on the one hand, only single-sided writing on the flexible rotating blackboard is required to achieve a complete display exceeding the single-sided writing area. In this embodiment, writing on a 1-meter flexible writing screen 170 realizes the display of the content of the 2-meter display blackboard 200, and the contents of the asynchronous display area 2021 and the synchronous display area 2022 are spliced ​​into a completed blackboard. On the other hand, during the rotation process, the asynchronous display area 2021 and the synchronous display area 2022 can always be in a continuous connection state, such as Fig.11In the intermediate state of rotation, the "3" column in the asynchronous display area 2021 is connected with the "4" column in the synchronous display area 2022, so that the flexible writing screen 170 rotates to Fig.11 In the final state, the "7" column in the asynchronous display area 2021 is connected with the "8" column in the synchronous display area 2022, thereby ensuring that the display content on the display blackboard 200 is displayed continuously and uninterruptedly, improving the viewing experience. Similarly, the content displayed in the asynchronous display area 2021 and the synchronous display area 2022 and the connection method in this embodiment are only a case of continuous display, not a limitation of the present invention, and will not be exhaustively listed here.

[0067] As the third embodiment of the present invention, when the flexible writing screen 170 of the flexible rotating blackboard is rotated, the display blackboard 200 is completely locked. At this time, the display blackboard 200 will not interact with the content on the flexible writing screen 170, and can be used as a conventional display screen, which is only used to display the written content on the flexible writing screen 170 or the content displayed in its own memory. For this embodiment, since the display content on the display blackboard 200 does not move and is not dynamically demonstrated, it is not separately illustrated in the accompanying drawings. For details, please refer to Fig.10 A locked area 201 is fixedly displayed in the display.

[0068] In addition, the synchronous movement described above includes full offset and / or specified offset. Fig.12 As shown, the complete offset means that the single offset of the displayed content on the display blackboard 200 is not less than the writing area on one side of the flexible writing screen 170. Fig.12 The display content in area A of the display blackboard 200 is completely shifted and moved to area B. Fig.13 As shown, the specified offset means that the single offset of the displayed content on the display blackboard 200 is smaller than the writing area on one side of the flexible writing screen 170. Fig.13 The display content in area A of the display blackboard 200 is moved between area A and area B through a specified offset. In a specific demonstration process, either a complete offset or a specified offset can be used, or both can be used in combination to meet the required dynamic display or final state display of the offset process.

[0069] The relevant modules involved in the blackboard of the present invention are all hardware system modules or functional modules that combine computer software programs or protocols with hardware in the prior art. The computer software programs or protocols involved in the functional modules are themselves technologies that are well known to those skilled in the art and are not improvements of the present system. The improvements of the present system are the interaction or connection relationships between the modules, that is, improvements to the overall structure of the system to solve the corresponding technical problems to be solved by the present system.

[0070] The present invention has been described in detail above in conjunction with specific exemplary embodiments. However, it should be understood that various modifications and variations may be made without departing from the scope of the present invention as defined by the appended claims. The detailed description and the accompanying drawings should be considered only as illustrative and not restrictive, and if there are any such modifications and variations, they will fall within the scope of the present invention described herein. In addition, the background technology is intended to illustrate the current status and significance of the research and development of the present technology and is not intended to limit the present invention or the application field of the present application and the present invention.

[0071] More specifically, although exemplary embodiments of the present invention have been described herein, the present invention is not limited to these embodiments, but includes any and all embodiments that are recognizable by those skilled in the art based on the foregoing detailed description, such as combinations between the various embodiments, adaptive changes and / or replacements. The limitations in the claims may be interpreted broadly based on the language used in the claims and are not limited to the examples described in the foregoing detailed description or during the implementation of the application, which examples should be considered non-exclusive. Any steps listed in any method or process claim may be performed in any order and are not limited to the order presented in the claim. Therefore, the scope of the present invention should be determined solely by the attached claims and their legal equivalents, rather than by the description and examples given above.

Claims

1. An infrared memory blackboard, characterized in that: The invention comprises a first flexible rotating blackboard (100), a display blackboard (200), an infrared transmitter and an infrared receiver; the first flexible rotating blackboard (100) is arranged on the side of the display blackboard (200) and is connected to the display blackboard (200); the infrared transmitter and the infrared receiver are arranged at one end and the other end of the blackboard respectively; the infrared transmitter is used to form an intersecting infrared light network on the surface of the blackboard; and the infrared receiver can receive the infrared light emitted by the infrared transmitter; The first flexible rotating blackboard (100) comprises a bracket (160), an annular flexible writing screen (170), a driving shaft (110), and a driven shaft (120); the driving shaft (110) and the driven shaft (120) are arranged in parallel on the bracket, the flexible writing screen (170) is stretched outside the driving shaft (110) and the driven shaft (120) and is rollingly connected to the driving shaft (110) and the driven shaft (120); the writing area on one side of the flexible writing screen (170) is smaller than the display area on one side of the display blackboard (200); The interactive control method of the infrared memory blackboard writing content and display content is as follows: When content is written on the flexible writing screen (170) of the flexible rotating blackboard, content identical to the written content is displayed on the display blackboard (200) using infrared; When the flexible writing screen (170) of the flexible rotating blackboard is rotated, if the display blackboard (200) is completely locked, the display blackboard (200) displays its display content alone; if the display blackboard (200) is not completely locked, the unlocked part of the display blackboard (200) moves synchronously to display the content on the flexible writing screen (170).

2. An infrared memory blackboard according to claim 1, characterized in that: The infrared transmitter comprises a first infrared transmitting light bar (410) and a second infrared transmitting light bar (420), and the infrared receiver comprises a first infrared receiving light bar (430) and a second infrared receiving light bar (440); the first infrared transmitting light bar (410), the second infrared transmitting light bar (420), the first infrared receiving light bar (430) and the second infrared receiving light bar (440) are sequentially connected end to end to form an infrared light frame (400); the shape of the infrared light frame (400) is adapted to the edge of the blackboard and is arranged on the edge of the blackboard; The first infrared receiving light bar (430) receives infrared light emitted by the first infrared emitting light bar (410), and the second infrared receiving light bar (440) receives infrared light emitted by the second infrared emitting light bar (420); the infrared light emitted by the first infrared emitting light bar (410) and the second infrared emitting light bar (420) form an infrared light network that intersects obliquely on the surface of the blackboard.

3. An infrared memory blackboard according to claim 1, characterized in that: The first flexible rotating blackboard (100) further comprises a support plate (130); the support plate (130) is arranged inside the writing plane of the flexible writing screen (170) and is arranged parallel to the flexible writing screen (170).

4. An infrared memory blackboard according to claim 3, characterized in that: The first flexible rotating blackboard (100) further comprises a driving mechanism (150), wherein the driving mechanism (150) is arranged on a bracket (160) and connected to a support plate (130), and the driving mechanism (150) is used to drive the support plate (130) to approach or move away from a writing plane of the flexible writing screen (170).

5. An infrared memory blackboard according to claim 4, characterized in that: The driving mechanism (150) is a driving motor, the output shaft of the driving motor is a driving motor output shaft (151), an eccentric shaft (152) is provided on the driving motor output shaft (151), and the rotation plane of the eccentric shaft (152) is perpendicular to the flexible writing screen (170); a first connecting member (131) is provided on the side of the supporting plate (130) away from the writing plane of the flexible writing screen (170), and a first through hole (1311) is provided on the first connecting member (131); the eccentric shaft (152) is passed through the first through hole (1311).

6. An infrared memory blackboard according to claim 4, characterized in that: The first flexible rotating blackboard (100) further comprises reinforcing ribs (140), wherein the reinforcing ribs (140) are arranged on a side of the support plate (130) away from the writing plane and are mounted on the bracket (160); the driving mechanism (150) is mounted on the reinforcing ribs (140).

7. An infrared memory blackboard according to claim 6, characterized in that: The support plate (130) is also provided with a guide rod (132); the reinforcing rib (140) is provided with a through hole, the guide rod (132) is inserted into the through hole and is slidably connected to the reinforcing rib (140), and its sliding direction is perpendicular to the writing plane of the flexible writing screen (170).

8. An infrared memory blackboard according to any one of claims 1 to 7, characterized in that: It also includes a second flexible rotating blackboard (300), the structure of the second flexible rotating blackboard (300) is the same as that of the first flexible rotating blackboard (100); the second flexible rotating blackboard (300) is arranged on a side of the display blackboard (200) relative to the first flexible rotating blackboard (100), the first flexible rotating blackboard (100) and the second flexible rotating blackboard (300) are symmetrically arranged, and the display blackboard (200) is the middle blackboard.

9. An infrared memory blackboard according to claim 8, characterized in that: The flexible rotating blackboard also includes a rotating motor (111); the rotating motor (111) is installed on the bracket (160), and its output shaft is connected to the driving shaft (110). The rotating motor (111) is used to drive the driving shaft (110) to rotate and drive the flexible writing screen (170) to roll.

10. An infrared memory blackboard according to claim 9, characterized in that: It also includes a data processor (500), a wireless communicator (600) and a server (700); the rotating motor (111), the infrared transmitter and the infrared receiver are electrically connected to the data processor (500) respectively; the wireless communicator (600) is connected to the data processor (500), and the server (700) is communicatively connected to the wireless communicator (600).

11. A method for interactively controlling writing content and display content on a blackboard, based on an infrared memory blackboard as claimed in any one of claims 1 to 10, characterized in that: When content is written on the flexible writing screen (170) of the flexible rotating blackboard, content identical to the written content is displayed on the display blackboard (200) using infrared; When the flexible writing screen (170) of the flexible rotating blackboard is rotated, if the display blackboard (200) is completely locked, the display blackboard (200) displays its display content alone; if the display blackboard (200) is not completely locked, the unlocked part of the display blackboard (200) moves synchronously to display the content on the flexible writing screen (170).

12. A method for interactively controlling blackboard writing content and display content according to claim 11, characterized in that: When the flexible writing screen (170) is rotated, if the display blackboard (200) is not completely locked, it is determined whether the display blackboard (200) is partially locked: if the display blackboard (200) is partially locked, the written content on the flexible writing screen (170) is displayed on the display blackboard (200) through synchronous movement, and interacts with the locked display content on the display blackboard (200); if the display blackboard (200) is not partially locked, the written content on the flexible writing screen (170) is continuously displayed as the display content of the display blackboard (200) through synchronous movement.

13. A method for interactively controlling blackboard writing content and display content according to claim 12, characterized in that: When the display blackboard (200) is partially locked, the display content on the display blackboard (200) includes a locking area (201) and a moving area (202), wherein the moving area (202) is formed by displaying the written content on the flexible writing screen (170) on the display blackboard (200) through synchronous movement; the locking area (201) and the moving area (202) interact with each other in an overlapping or combined manner.

14. A method for interactively controlling blackboard writing content and display content according to claim 12, characterized in that: When the display blackboard (200) is not partially locked, the display content on the display blackboard (200) includes a moving area (202), and the moving area (202) includes an asynchronous display area (2021) and a synchronous display area (2022), wherein the display content of the synchronous display area (2022) is the writing content on one side of the flexible writing screen (170); the asynchronous display area (2021) and the synchronous display area (2022) move at the same speed and are displayed in a continuous manner.

15. A method for interactively controlling blackboard writing content and display content according to any one of claims 11 to 14, characterized in that: The synchronous movement includes a complete offset and / or a specified offset; the complete offset means that the single offset of the content displayed on the display blackboard (200) is not less than the writing area on one side of the flexible writing screen (170); the specified offset means that the single offset of the content displayed on the display blackboard (200) is less than the writing area on one side of the flexible writing screen (170).

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