A learning machine based on holographic display

Abstract

This invention relates to a learning machine based on holographic display. The display device of the learning machine comprises a holographic display unit, a background display unit, and a touch unit. The polarized transparent glass of the holographic display unit is located on the front of the learning machine's casing, while the display screen of the background display unit is located on the rear of the casing. Students / children can only see the display screen through the polarized transparent glass and the holographic transparent screen of the holographic display unit, thus maintaining a certain distance from the display screen and protecting their eyesight. Simultaneously, this invention displays a virtual character on the holographic transparent screen, a background corresponding to the virtual character on the smart display device, and text of the learning content on the touch screen. This invention makes learning more tangible by having the virtual character and background video complement each other, and by displaying text content through the touch screen, thus enhancing the learning experience and making the learning machine more engaging.

Description

[0001] Parent application number: 202310644332.2

[0002] Application date: June 2, 2023

[0003] Patent Title: A Learning Machine Based on Holographic Display Technical Field

[0004] This invention relates to the field of learning machine technology, and more specifically to a learning machine based on holographic display. Background Technology

[0005] Learning machines are electronic educational products, a type of portable learning device widely used among students. Early learning machines connected to televisions, using the screen for output and display, lacking portability. Later, they evolved into smaller electronic dictionaries with independent displays, offering features such as personal information management, games, Chinese-English dictionaries, and Chinese-English translation. However, all programs were fixed on memory, limiting storage capacity and functionality. With technological advancements, these portable devices have further enhanced their learning functions and materials, supporting different learning formats and diverse subjects. Tablet-style learning machines, especially those based on cloud-based resource libraries, use touchscreens to display content and provide interactive functions, significantly improving learning effectiveness. Currently, most learning machines (including learning apps) suitable for elementary school students / preschoolers present teaching content on the touchscreen in the form of games or animations to increase engagement. However, because students / preschoolers cannot properly control their distance from the touchscreen, or staring at it for extended periods can easily damage their eyesight. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of this invention is to provide a learning machine based on holographic display, which improves the learning fun of the learning machine and protects the eyesight of students / children by changing the structure and display effect of the learning machine.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A learning machine based on holographic display includes a housing, a main control device, a display device, and a speaker. The main control device, the display device, and the speaker are mounted on the housing. The main control device is connected to the display device and the speaker and controls the display device and the speaker.

[0009] The display device includes a holographic display unit, a background display unit, and a touch display unit. The holographic display unit includes polarized transparent glass and a holographic transparent screen. The polarized transparent glass is disposed on one side of the housing, which is defined as the front side of the housing. The holographic transparent screen is disposed inside the housing and located at the rear of the housing. The touch unit includes at least one touch screen, which is disposed on the left or right side of the housing, with the touch surface of the touch screen facing outwards. The background display unit is implemented by a smart display device, such as a mobile phone or a tablet computer, that is detachably installed on the rear side of the housing. When in use, the display surface of the smart display device faces forward, and the display surface of the smart display device can be seen through the polarized transparent glass and the holographic transparent screen of the holographic display unit.

[0010] The intelligent display device stores a background material library, a holographic material library, and a touch screen material library. The background material library stores background videos, the holographic material library stores virtual character videos, and the touch screen material library stores text videos. The intelligent display device also has a learning app installed, which provides users with an interface for selecting learning content and virtual characters.

[0011] The main control device includes a controller, a communication module, and a control panel. The controller is connected to a speaker, a touch screen, and a holographic transparent screen.

[0012] The control panel is connected to the controller; the control panel is equipped with a power control button and a volume control button; the power control button is used to turn the learning machine on or off, and the volume control button is used to control the playback volume of the speaker.

[0013] The communication module is used to establish a communication connection with the smart display device. After the smart display device establishes a communication connection with the learning machine, the built-in playback function of the smart display device is turned off, and the audio source data is directly connected to the controller and output to the speaker of the learning machine for playback. At the same time, the controller inputs the touch information of the touch screen to the smart display device, and selects the virtual character and learning content through the operation interface provided by the touch screen. At this time, the user can see the virtual character performing the learning content on the holographic transparent screen through the polarized transparent glass, and see the background content played synchronously on the display screen and the text content displayed synchronously on the touch screen through the holographic transparent screen.

[0014] The rear side of the housing is provided with a mounting slot for placing a smart display device. The front side of the mounting slot is provided with a display area, which connects the mounting slot and the interior of the housing. When the smart display device is placed in the mounting slot, the display screen of the smart display device corresponds to the display area.

[0015] The communication module is a USB interface, which is located at the bottom or side wall of the mounting slot.

[0016] The communication module can be a Bluetooth communication module, a USB interface, or a WiFi communication module.

[0017] The learning machine's casing is also equipped with a microphone or camera connected to the controller to capture the user's voice and / or video images. When the intelligent display device establishes a communication connection with the communication module, the intelligent display device's built-in microphone and camera functions are turned off, and the controller receives the sound data captured by the microphone and the image data captured by the camera. The intelligent display device is also equipped with an interactive module, which recognizes the user's intentions based on the user's voice and / or the facial expressions and body movements identified by the camera's video images, and changes the background video, virtual character video, or text video played according to the user's intentions.

[0018] A learning machine based on holographic display includes a housing, a main control device, a display device, and a speaker. The main control device, the display device, and the speaker are mounted on the housing. The main control device is connected to the display device and the speaker and controls the display device and the speaker.

[0019] The display device includes a holographic display unit, a background display unit, and a touch display unit. The holographic display unit includes polarized transparent glass and a holographic transparent screen. The polarized transparent glass is disposed on one side of the housing, which is defined as the front side of the housing. The holographic transparent screen is disposed inside the housing and located behind the polarized transparent glass. The touch unit includes at least one touch screen, which is disposed on the left or right side of the housing, with the touch surface of the touch screen facing outwards. The background display unit is a display screen, which is disposed on the rear side of the housing, with its display surface facing forward. The display screen is visible through the polarized transparent glass and the holographic transparent screen of the holographic display unit.

[0020] The main control device includes a controller, a storage module connected to the controller, and a control panel. The controller is connected to a holographic transparent screen, a display screen, and a touch screen. The control panel has a power control button. The storage module stores a background material library, a holographic material library, and a touch screen material library. The holographic material library stores virtual character videos, the touch screen material library stores text videos, and the background material library stores background videos. Users can select virtual characters and learning content through the operation interface provided by the touch screen. At this time, the user can see the virtual characters performing the learning content on the holographic transparent screen through the polarized transparent glass, and see the background content synchronously played on the display screen and the text content synchronously displayed on the touch screen through the holographic transparent screen.

[0021] The housing is also equipped with a microphone and / or camera connected to the controller to capture the user's voice and / or video images. The main control device also includes an interactive module, which recognizes the user's intentions based on the user's voice and / or the facial expressions and body movements identified by the camera's video images, and changes the background video, virtual character video, or text video played according to the user's intentions.

[0022] A communication module is also installed inside or on the housing, which includes a Bluetooth communication module, a USB interface, or a WiFi communication module.

[0023] With the above solution, the display device of the learning machine of the present invention consists of a holographic display unit, a background display unit, and a touch unit. The polarized transparent glass of the holographic display unit is located on the front side of the learning machine's casing, while the display screen of the background display unit is located on the rear side of the casing. Students / children can only see the display screen of the background display unit through the polarized transparent glass and the holographic transparent screen of the holographic display unit. This allows students to maintain a certain distance from the display screen during learning, thereby protecting their eyesight. Simultaneously, the present invention displays a virtual character on the holographic transparent screen, a background corresponding to the virtual character on the smart display device, and text of the learning content on the touch screen. The present invention makes learning more concrete by having the virtual character and background video complement each other, and by displaying text content through the touch screen, thus enhancing the learning experience and making the learning machine more engaging.

[0024] Furthermore, this invention utilizes existing tablets or mobile phones as smart display devices in conjunction with the learning machine. Once a communication connection is established between the tablet or mobile phone and the learning machine, the tablet or mobile phone can be operated on the touchscreen to select learning content. In other words, this invention expands the display methods of existing tablets or mobile phones through a holographic technology-based learning machine. The eye-damaging screen of the tablet or mobile phone is placed at a distance as a background display unit. The learning content is deconstructed into audio content performed by virtual characters displayed holographically, and text content displayed on the touchscreen. To protect the eyes, the touchscreen is set to an eye-friendly display mode. This not only reduces the cost of the learning machine but also increases the fun of teaching, possessing significant commercial value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 for Figure 1 A sectional view;

[0027] Figure 3 This is a principle block diagram of Embodiment 1 of the present invention;

[0028] Figure 4This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0029] Figure 5 for Figure 4 A sectional view;

[0030] Figure 6 This is a principle block diagram of Embodiment 2 of the present invention.

[0031] Label Explanation:

[0032] Housing 10; Mounting slot 11; Camera 12; Microphone 13; Speaker 14;

[0033] Display device 20; holographic display unit 21; holographic transparent screen 211; polarized transparent glass 212; background display unit 22; display screen 221; touch unit 23; touch screen 231;

[0034] Main control device 30; controller 31; control panel 32; power control button 321; touch-related button 322; touch button 323; communication module 33; storage module 34; interactive module 35;

[0035] 40. Intelligent display devices. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of the embodiments of this application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Example 1

[0042] like Figure 1-3 As shown, the present invention discloses a learning machine based on holographic display, including a housing 10, a main control device 30, a display device 20, and a speaker 14. The main control device 30, the display device 20, and the speaker 14 are mounted on the housing 10. The main control device 30 is connected to the display device 20 and the speaker 14 and controls the display device 20 and the speaker 14.

[0043] The display device 20 includes a holographic display unit 21, a background display unit 22, and a touch unit 23. The holographic display unit 21 includes a polarizing transparent glass 212 and a holographic transparent screen 211. The polarizing transparent glass 212 is disposed on one side of the housing 10, which is defined as the front side of the housing 10. The holographic transparent screen 211 is disposed inside the housing 10 and located behind the polarizing transparent glass 212. The touch unit 23 includes at least one touch screen 231, which is disposed on the left or right side of the housing 10, with the touch surface of the touch screen 231 facing outward. The background display unit 22 is implemented by a smart display device 40 that is detachably installed on the rear side of the housing 10. The smart display device 40 is a mobile phone or a tablet computer. When in use, the display surface of the smart display device 40 faces forward. The user sees the content played on the display screen of the smart display device 40 through the polarized transparent glass 212 and the holographic transparent screen 211 of the holographic display unit 21 in sequence. The virtual character displayed on the holographic transparent screen 211 corresponds to the content played on the background display unit 22.

[0044] The intelligent display device 40 stores a background material library, a holographic material library, and a touch screen material library. The background material library stores background videos, the holographic material library stores virtual character videos, and the touch screen material library stores text videos. The intelligent display device 40 also has a learning app installed, which provides users with an interface for selecting learning content and virtual characters.

[0045] The main control device 30 includes a controller 31, a communication module 33, and a control panel 32. The controller 31 is connected to the speaker 14, the touch screen 231, and the holographic transparent screen 211. The control panel 32 is connected to the controller 31 and is located on the upper side of the housing 10. The control panel 32 is equipped with a power control button 321 and a volume control button. The power control button 321 is used to turn the power of the learning machine on or off, and the volume control button is used to control the playback volume of the speaker 14.

[0046] The communication module 33 is used to establish a communication connection with the smart display device 40. After the smart display device 40 establishes a communication connection with the communication module 33 of the learning machine, the built-in playback function of the smart display device 40 is turned off, and the audio source data is directly connected to the controller 31 and output to the speaker 14 of the learning machine for playback. At the same time, the controller 31 inputs the touch information of the touch screen 231 to the smart display device 40, and the user operates the smart display device 40 through the touch screen 231. The user operates the learning machine APP on the touch screen 231 and selects learning content and virtual characters through the learning machine APP. After selection, click play. At this time, the smart display device 40 plays the selected virtual character video on the holographic transparent screen 211 through the controller 31, and the selected background video is played synchronously on the display screen 221 of the smart display device 40. The text content corresponding to the virtual character's voice is displayed on the touch screen 231. The touch screen 231 can automatically exit the operation interface and display the text content after selecting playback.

[0047] In this embodiment, a mounting slot 11 is provided on the rear side of the housing 10. This mounting slot 11 is used to place the smart display device 40. A display area is provided on the front side of the mounting slot 11, and the display area connects the mounting slot 11 and the interior of the housing 10. When the smart display device 40 is placed in the mounting slot 11, the display screen 221 of the smart display device 40 corresponds to the display area. The communication module 33 is a USB interface, which is located at the bottom or side wall of the mounting slot 11. In addition to the USB interface communication method, the communication module 33 can also be implemented using a Bluetooth communication module or a WiFi communication module.

[0048] Based on the above, a touch-associated button 322 can be added to the control panel 32. After the smart display device 40 establishes a connection with the communication module 33 and the touch-associated button 322 is pressed, the smart display device 40 can receive touch operations from the touch screen 231. Simultaneously, to prevent children from accidentally touching the touch screen 231 and affecting the normal playback of the learning machine, a touch button 323 can be added to the control panel 32 to enable or disable the touch function of the touch screen 231. The touch screen 231 can only receive touch operations from the smart display device 40 when the touch button 323 is pressed.

[0049] When a user uses the learning machine, they operate the power control button on the control panel 32 to start the learning machine. Then, they operate a mobile phone or tablet to establish a communication connection with the communication module 33 of the learning machine. Next, they place the mobile phone or tablet into the installation slot 11 of the learning machine, turn off the built-in playback function of the mobile phone or tablet, and directly connect the audio source data to the controller 31 and output it to the speaker 14 of the learning machine for playback. At the same time, the controller 31 inputs the touch information of the touch screen 231 to the smart display device 40. Through the operation interface provided by the touch screen 231, the user selects a virtual character and learning content. When starting, the touch screen 231 hides the operation interface. At this time, the user sees the virtual character performing the learning content on the holographic transparent screen 211 through the polarized transparent glass 212, sees the background content synchronously played on the display screen 221 through the holographic transparent screen 211, and sees the text content synchronously displayed on the touch screen 231. For example, when a user wants to learn the poem "Quiet Night Thoughts", they can select the virtual character Xiao Li Bai and the poem. After confirming playback, the user can see the virtual character Xiao Li Bai reciting the poem on the holographic transparent screen 211 through the polarized transparent glass 212. The sound is amplified through the speaker 14, and the text of "Quiet Night Thoughts" can be seen on the touch screen 231 at the same time.

[0050] To further enhance the learning experience, the learning machine's casing 10 is also equipped with a microphone 13 or a camera 12 connected to the controller 31 to capture the user's voice and / or video images. When the intelligent display device 40 establishes a communication connection with the communication module 33, the built-in microphone and camera functions of the intelligent display device 40 are turned off, and the controller 31 receives the sound data captured by the microphone 13 and the image data captured by the camera 12. The intelligent display device 40 also includes an interactive module. This interactive module recognizes the user's intention based on the user's voice and / or facial expressions and body movements detected by the video images from the camera 12, and changes the background video, virtual character video, or text video played according to the user's intention. Additionally, the interactive module 3 can also correspondingly change the facial expressions and body movements of the virtual character based on the facial expressions and body movements detected by the video images from the camera 12.

[0051] The display device 20 of the learning machine of this invention consists of a holographic display unit 21, a background display unit 22, and a touch unit 23. The polarized transparent glass 212 of the holographic display unit 21 is located on the front side of the learning machine casing 10, while the display screen 221 of the background display unit 22 is located on the rear side of the casing 10. Students / children can only see the display screen 221 through the polarized transparent glass 212 and the holographic transparent screen 211 of the holographic display unit 21, thus maintaining a certain distance from the display screen 221 and protecting their eyesight. Simultaneously, this invention displays a virtual character on the holographic transparent screen 211, a background corresponding to the virtual character on the intelligent display device 40, and text of the learning content on the touch screen 231. This invention makes learning more concrete by having the virtual character and background video complement each other and displaying text content through the touch screen, thereby increasing the learning enjoyment of the learning machine.

[0052] Furthermore, this invention uses existing tablets or mobile phones as smart display devices 40 in conjunction with the learning machine. Once a communication connection is established between the tablet or mobile phone and the learning machine, the tablet or mobile phone can be operated on the touch screen 231 to select learning content. In other words, this invention expands the display methods of existing tablets or mobile phones through a holographic technology-based learning machine. The screen of the tablet or mobile phone, which is harmful to the eyes, is placed at a distance as a background display unit. The learning content is deconstructed into audio content performed by virtual characters displayed holographically, and text content displayed on the touch screen. To protect the eyes, the touch screen is set to an eye-friendly display mode. This not only reduces the cost of the learning machine but also increases the fun of teaching, and has great commercial value.

[0053] Example 2

[0054] like Figure 4-6 As shown, compared to Embodiment 1, this embodiment directly fixes the display screen 221 to the rear side of the learning machine's casing 10 for displaying background videos. The main control device 30 includes a controller 31, a storage module 34 connected to the controller 31, and a control panel 32. The controller 31 is connected to the holographic transparent screen 211, the display screen 221, and the touch screen 231, and is used to display virtual characters, backgrounds matching the virtual characters, and learned text content on the holographic transparent screen 211, the display screen 221, and the touch screen 231. The storage module 34 stores a background material library, a holographic projection material library, and a touch screen material library. The holographic projection material library stores virtual character videos, the touch screen material library stores text videos, and the background material library stores background videos. Under the control of the controller 31, the display screen 221 is used to display the background, the holographic transparent screen is used to display the virtual characters, and the touch screen 231 is used to play text content.

[0055] When a user uses the learning machine, they operate the power control button on the control panel 32 to start the machine, and then operate the touch button 323 to activate the touch function of the touch screen 231. Next, the user selects a virtual character and learning content through the interface provided by the touch screen 231. Upon selecting "start," the touch screen 231 hides the interface. At this time, the user sees the virtual character performing the learning content on the holographic transparent screen 211 through the polarized transparent glass 212, sees the background content synchronously played on the display screen 221 through the holographic transparent screen 211, and sees the text content synchronously displayed on the touch screen 231. For example, if a user wants to learn the poem "Quiet Night Thoughts," they can select the virtual character "Little Li Bai" and the poem. After confirming playback, the user can see the virtual character "Little Li Bai" reciting the poem on the holographic transparent screen 211 through the polarized transparent glass 212, with the sound amplified through the speaker 14. Simultaneously, the user can see the text content of "Quiet Night Thoughts" on the touch screen 231.

[0056] To further enhance the learning experience of the learning machine, a microphone 13 and / or a camera 12 connected to the controller 31 are also installed on the casing 10 to capture the user's voice and / or video images. The main control device also includes an interaction module 35, which recognizes the user's intentions based on the user's voice and / or facial expressions and body movements detected by the video images from the camera 12, and changes the background video, virtual character video, or text video played according to the user's intentions. In addition, the interaction module 35 can also correspondingly change the facial expressions and body movements of the virtual character based on the facial expressions and body movements recognized by the video images from the camera 12.

[0057] In addition, a communication module 33 is installed inside or on the casing 10 of the learning machine. This communication module 33 includes a Bluetooth communication module, a USB interface, or a WiFi communication module. After the user connects an external device to the learning machine through the communication module 33, the content of the background material library, holographic projection material library, and touch screen material library in the learning machine can be updated.

[0058] The display device 20 of the learning machine in this embodiment consists of a holographic display unit 21, a background display unit 22, and a touch unit 23. The polarized transparent glass 212 of the holographic display unit 21 is located on the front side of the learning machine casing 10, while the display screen 221 of the background display unit 22 is located on the rear side of the casing 10. Students / children can only see the display screen 221 through the polarized transparent glass 212 and the holographic transparent screen 211 of the holographic display unit 21, thus maintaining a certain distance from the display screen 221 and protecting their eyesight. Simultaneously, this invention displays a virtual character on the holographic transparent screen 211, a background corresponding to the virtual character on the display screen, and text of the learning content on the touch screen 231. This invention makes learning more concrete by having the virtual character and background video complement each other and displaying text content through the touch screen, thereby increasing the learning enjoyment of the learning machine.

[0059] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0060] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A learning machine based on holographic display, comprising a housing, a main control unit, a display unit, and a speaker, wherein the main control unit, the display unit, and the speaker are mounted on the housing, the main control unit is connected to the display unit and the speaker, and controls the display unit and the speaker; the main control unit includes a controller, a communication module, and a control panel, the controller being connected to the control panel and the communication module respectively; the control panel is provided with a power control button and a volume control button; the power control button is used to turn the learning machine's power on or off, and the volume control button is used to control the playback volume of the speaker; characterized in that: The display device includes a holographic display unit, a background display unit, and a touch display unit. The holographic display unit includes polarized transparent glass and a holographic transparent screen. The polarized transparent glass is disposed on one side of the housing, with that side serving as the front side of the housing. The holographic transparent screen is disposed inside the housing and located behind the polarized transparent glass. The touch display unit includes at least one touch screen, which is disposed on the left or right side of the housing, with its touch surface facing outwards. The background display unit is a fixed structure with the housing and is a display screen disposed on the rear side of the housing, with its display surface facing forward. The display screen can be seen through the polarized transparent glass and holographic transparent screen of the holographic display unit; The main control device also includes a storage module connected to a controller, which is connected to a holographic transparent screen, a display screen, and a touch screen. The storage module stores a background material library, a holographic material library, and a touch screen material library. The holographic material library stores virtual character videos, the touch screen material library stores text videos, and the background material library stores background videos. Users can select virtual characters and learning content through the operation interface provided by the touch screen. Through the polarized transparent glass, users can see the videos of virtual characters performing the learning content played on the holographic transparent screen, hear the learning content played by the speakers, and see the background video played synchronously on the display screen and the learning content displayed synchronously on the touch screen.

2. A learning machine based on holographic display according to claim 1, characterized in that: The housing is also equipped with a microphone and / or camera connected to the controller to capture the user's voice and / or video images. The main control device also includes an interactive module, which recognizes the user's intentions based on the user's voice and / or the facial expressions and body movements identified by the camera's video images, and changes the background video, virtual character video, or text video played according to the user's intentions.

3. A learning machine based on holographic display according to claim 1, characterized in that: The communication module includes a Bluetooth communication module, a USB interface, or a WiFi communication module.

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