Handwriting projection device

Abstract

The application provides a handwriting projection device. The handwriting projection device comprises a handwriting pen, a handwriting board and a projection receiver. The handwriting pen comprises a data acquisition module for recording handwriting data of a pen tip during writing on paper. The handwriting board is internally provided with an induction receiving module matched with the data acquisition and transmission module of the handwriting data. The induction receiving module is used for sensing the handwriting data generated by the handwriting pen. The projection receiver is used for receiving the handwriting data sensed and transmitted by the handwriting board, and restoring the handwriting data to electronic handwriting and projecting the electronic handwriting to a large screen connected with the projection receiver. The handwriting projection device of the application realizes human-computer interaction by cooperating the handwriting board, the handwriting pen and the projection receiver to collect, transmit and real-time put on the large screen the handwriting data of the user on the paper.

Description

Technical Field

[0001] This application relates to the field of human-computer interaction technology, specifically to a handwriting projection device. Background Technology

[0002] With the popularization of remote collaboration and hybrid office scenarios, traditional display devices (such as projectors, video conferencing systems, and ordinary monitors) lack touch handwriting functions, resulting in a disconnect in operation during scenarios such as meeting minutes and teaching presentations.

[0003] Current mainstream solutions use a combination of physical whiteboards and projection devices, but these solutions suffer from large space requirements and the inability to digitally save written content, and still fail to provide a good human-computer interaction experience. Utility Model Content

[0004] The first aspect of this application provides a handwriting projection device, the handwriting projection device comprising:

[0005] A stylus pen, the stylus pen including a data acquisition module for recording handwriting data during the writing process of the pen tip on paper;

[0006] A handwriting tablet, wherein the handwriting tablet has a built-in sensing and receiving module that is compatible with the handwriting data acquisition and transmission module, and the sensing and receiving module is used to sense the handwriting data generated by the stylus;

[0007] A screen mirroring receiver is used to receive handwriting data sensed and sent by the handwriting tablet, and restore the handwriting data into electronic handwriting for projection onto a large screen connected to the screen mirroring receiver.

[0008] In some optional embodiments, the sensing receiving module includes at least two signal receivers, with the first signal receiver and the second signal receiver respectively disposed at both ends of the handwriting tablet;

[0009] The data acquisition module also includes a signal transmitter, which is used to send handwriting signals during the writing process of the pen tip on the paper.

[0010] In some alternative embodiments, the stylus includes a refill and a tip that produce realistic handwriting, and the data acquisition module is disposed on the side of the stylus body near the tip.

[0011] In some optional embodiments, the data acquisition module includes a first pressure sensor and a first position sensor.

[0012] In some alternative embodiments, the writing tablet is provided with a groove and a fixing mechanism for fixing paper, the groove having a built-in position sensing sensor and pressure sensor for sensing the stylus.

[0013] In some optional embodiments, the handwriting tablet has a first charging contact on its housing and the stylus has a second charging contact, and the stylus is attached to the housing via the second charging contact and the first charging contact.

[0014] In some alternative embodiments, the handwriting data includes handwriting coordinates and pressure sensitivity signals.

[0015] In some optional embodiments, the handwriting tablet is provided with a mode switching key for switching the screen projection mode.

[0016] In some optional embodiments, the screen projection receiver is provided with a wireless module, which is used to transmit the handwriting data to the writing tablet via a wireless network.

[0017] In some optional embodiments, the screen mirroring receiver is provided with a memory expansion slot.

[0018] The handwriting projection device provided in this application embodiment collects, transmits, and projects the user's handwriting data on paper onto a large screen in real time through the cooperation of a handwriting tablet, a stylus, and a projection receiver, thereby realizing human-computer interaction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the handwriting projection device provided in this application;

[0021] Figure 2 This is a schematic diagram of the structure of an embodiment of the stylus provided in this application;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the handwriting tablet provided in this application. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0024] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] This application addresses the problem that current mainstream solutions fail to provide a satisfactory human-computer interaction experience by providing a specific handwriting projection device. Please refer to [link / reference needed]. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the handwriting projection device provided in this application.

[0027] like Figure 1 As shown, the handwriting projection device 100 of this application mainly consists of a handwriting tablet 11, a stylus 12, and a projection receiver 13. The handwriting tablet 11 includes a housing 111, one side of which is provided with a groove 112 and a fixing mechanism (not shown in the figure). The function of the groove 112 is to accommodate and fix the paper to be written on. Generally, the size design of the groove 112 in this application can accommodate common paper sizes on the market, including but not limited to A4 size.

[0028] Furthermore, the handwriting tablet 11 also includes a sensing and receiving module 113, which is used to sense or receive handwriting data generated by the stylus 12 during the writing process on the paper.

[0029] Specifically, the stylus 12 of this application includes a pen tip 121 and a data acquisition module 122 for recording handwriting data during the writing process of the pen tip 121 on paper. The data acquisition module 122 and the sensing and receiving module 113 can be directly or indirectly connected to transmit handwriting data.

[0030] In addition to data transmission, the inductive receiving module 113 of this application also has data acquisition capabilities. Specifically, the inductive receiving module 113 includes at least two signal receivers. Figure 1 As shown, the first signal receiver 1131 and the second signal receiver 1132 are disposed in different areas of the handwriting tablet 11. Correspondingly, the stylus 12 of this application also includes a signal transmitter 123. The signal transmitter 123 can be disposed within the body or tip 121 of the stylus 12, or on the side of the body of the stylus 12 near the tip 121. Its function is to transmit handwriting data when the stylus 12 writes on paper. The first signal receiver 1131 and the second signal receiver 1132 respectively receive the handwriting data. Then, by using the time difference between the arrival of the handwriting data at the first signal receiver 1131 and the second signal receiver 1132, combined with the propagation speed of ultrasound and the distance between the first signal receiver 1131 and the second signal receiver 1132, the position coordinates of the stylus tip 121 can be accurately calculated. Then, by continuously recording the position coordinates of the stylus tip 121, handwriting data can be generated.

[0031] When the signal transmitter 123 can be installed inside the pen body of the stylus 12, it is installed on the side near the pen tip 121.

[0032] To reduce wasted resources in the signal transmitter 123, it can be activated when pressure is applied to the tip 121 of the stylus 12, broadcasting handwriting data. When the pressure on the tip 121 of the stylus 12 disappears, the signal transmitter 123 can be controlled to enter a sleep state. Furthermore, the signal transmitter 123 can be turned off during prolonged periods of sleep.

[0033] Specifically, the first signal receiver 1131 and the second signal receiver 1132 can be positioned on the handwriting pad 11 at both ends of the groove 112, such as at both ends of the center line of the groove 112 or at both ends of the diagonal line of the groove 112.

[0034] Furthermore, the data acquisition module 122 of the stylus 12 of this application specifically includes a first pressure sensor 1221 and a first position sensor 1222. The first pressure sensor 1221 is used to acquire handwriting force data, and the first position sensor 1222 is used to acquire the position data of the pen tip 121. The two are combined to form handwriting data.

[0035] In other embodiments, the sensing and receiving module 113 of the handwriting tablet 11 of this application may also include a second pressure sensor 1133 and a second position sensor 1134. The second pressure sensor 1133 is used to collect handwriting force data, and the second position sensor 1134 is used to collect pen tip 121 position data. The two are combined to form handwriting data.

[0036] The second pressure sensor 1133 and the second position sensor 1134 can be placed at the bottom of the groove 112. When the stylus 12 writes content on the paper in the groove 112, the second pressure sensor 1133 and the second position sensor 1134 can read the relevant handwriting data.

[0037] Further, please refer to 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an embodiment of the stylus provided in this application. Figure 3 This is a schematic diagram of the structure of an embodiment of the handwriting tablet provided in this application.

[0038] like Figure 2 and Figure 3 As shown, the handwriting tablet 11 has a first charging contact 114 on its housing 111, while the stylus 12 has a second charging contact 124 on its body. The first charging contact 114 and the second charging contact 124 work together to enable the handwriting tablet 11 to charge the stylus 12, and to fix the stylus 12 to the handwriting tablet 11 through magnetic attraction.

[0039] Furthermore, the stylus 12 of this application may not have a power button. Instead, the working state is switched through the cooperation between the first charging contact 114 and the second charging contact 124. When the first charging contact 114 and the second charging contact 124 are separated, the stylus 12 can enter the working state.

[0040] In other embodiments, please continue to refer to Figure 3 The handwriting tablet 11 of this application is equipped with a power button 115, which can realize the power-on and power-off operation. When the power is on, the first power indicator light 116 will indicate the power level by changing the color or number. At the same time, the handwriting tablet is equipped with a charging interface 117, which can be charged with a common 5V charger.

[0041] In other embodiments, please continue to refer to Figure 2 The stylus 12 of this application is equipped with a second power indicator light 125, which can be used to indicate the power status. The pen tip 121 can be fitted with an international standard D1 pen refill to produce ballpoint pen ink on paper.

[0042] in, Figure 1 The diagram also shows a multi-view structure of the screen mirroring receiver 13. For example... Figure 1 As shown, the screen mirroring receiver 13 of this application is communicatively connected to the handwriting tablet 11, and is used to receive handwriting data from the handwriting tablet 11 and generate handwriting image information based on the handwriting data. The screen mirroring receiver 13 includes a screen mirroring interface 131, through which it connects to a screen mirroring device to transmit the handwriting image information to the screen mirroring device for display and playback.

[0043] The handwriting projection device 200 of this application supports various types of projection devices, including but not limited to: smart TVs, in-vehicle screens, projectors, and various monitors.

[0044] The interaction process between the handwriting tablet 11 and the screen projection receiver 13 is as follows:

[0045] The handwriting tablet 11 transmits handwriting data to the screen projection receiver 13. The screen projection receiver 13 visualizes the position data and pressure data in the handwriting data as handwriting image information and transmits it to the screen projection device for display through the screen projection interface 131.

[0046] Furthermore, the handwriting tablet 11 of this application is provided with operation buttons 111 for sending control signals to the screen projection receiver 13 so that the screen projection device displays handwriting image information according to the control signals, including but not limited to: controlling the display mode, display speed, display time, etc. of the handwriting image information.

[0047] The handwriting tablet 11 of this application is equipped with a mode switching key 112 for switching between HDMI projection mode and PC projection mode. In HDMI projection mode, the handwriting tablet 11 can be used with the projection receiver 13 to display electronic handwriting on a TV screen or projection device. In PC projection mode, it can be wirelessly connected to a PC via Bluetooth, allowing handwriting to be written and displayed on PC software that supports mouse handwriting.

[0048] It should be noted that the handwriting tablet 11 can also be used by staff to input control codes to achieve other types of screen projection modes, which will not be listed here.

[0049] The screen casting receiver 13 of this application is provided with an HDMI interface, which can be plugged into a device that supports HDMI screen casting. At the same time, the screen casting receiver 13 is provided with two USB-C interfaces 133, both of which can be used for power supply or data transmission.

[0050] The screen mirroring receiver 13 of this application is provided with an SD card expansion slot 134, which supports expanding storage space via SD card.

[0051] The screen mirroring receiver 13 of this application is also equipped with a wireless module (not shown in the figure). The wireless module supports Wi-Fi network connection, and the writing content on the handwriting tablet 11 can be shared to the cloud in the form of a file via Wi-Fi.

[0052] In the handwriting projection device of this application, the stylus and handwriting tablet only perform perception and information transmission operations, without performing complex calculations, and can operate with low power consumption; the core computing power is on the projection receiver, which can run whiteboard software and restore the received pen coordinate signals and pressure signals into electronic handwriting in real time, and finally project the software interface onto the large screen in real time using the HDMI transmission protocol, and the receiver is directly powered by the display.

[0053] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A handwriting projection device, characterized in that, The handwriting projection device includes: A stylus pen, the stylus pen including a data acquisition module for recording handwriting data during the writing process of the pen tip on paper; A handwriting tablet, wherein the handwriting tablet has a built-in sensing and receiving module that is compatible with the handwriting data acquisition and transmission module, and the sensing and receiving module is used to sense the handwriting data generated by the stylus; A screen mirroring receiver is used to receive handwriting data sensed and sent by the handwriting tablet, and restore the handwriting data into electronic handwriting for projection onto a large screen connected to the screen mirroring receiver.

2. The handwriting projection device according to claim 1, characterized in that, The sensing and receiving module includes at least two signal receivers, with the first signal receiver and the second signal receiver respectively disposed at both ends of the handwriting tablet; The data acquisition module also includes a signal transmitter, which is used to send handwriting signals during the writing process of the pen tip on the paper.

3. The handwriting projection device according to claim 2, characterized in that, The stylus includes a pen core and a pen tip that produce realistic handwriting, and the data acquisition module is located on the side of the stylus body near the pen tip.

4. The handwriting projection device according to claim 1, characterized in that, The data acquisition module includes a first pressure sensor and a first position sensor.

5. The handwriting projection device according to claim 1, characterized in that, The writing tablet is provided with a groove and a fixing mechanism for fixing paper. The groove has a built-in position sensing sensor and pressure sensor for sensing the stylus.

6. The handwriting projection device according to claim 1, characterized in that, The handwriting tablet has a first charging contact on its housing, and the stylus has a second charging contact. The stylus is attached to the housing by the second charging contact and the first charging contact.

7. The handwriting projection device according to claim 1, characterized in that, The handwriting data includes handwriting coordinates and pressure sensitivity signals.

8. The handwriting projection device according to claim 1, characterized in that, The handwriting tablet is equipped with a mode switching button for switching screen projection modes.

9. The handwriting projection device according to claim 1, characterized in that, The screen projection receiver is equipped with a wireless module, which is used to transmit the handwriting data to the writing tablet via a wireless network.

10. The handwriting projection device according to claim 1, characterized in that, The screen mirroring receiver is equipped with a memory expansion slot.

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