Pen box and writing display screen system

Abstract

The invention relates to the technical field of screen interaction, and discloses a pen box and a writing display screen system. According to the pen box, a pen box body is provided with a containing cavity used for containing writing pens. The color sensor module is arranged on the pen box body and used for detecting color information of a detected object. The tested object is the outer surface of the writing pen under the condition that the writing pen is accommodated in the accommodating chamber, and the tested object is the inner wall of the accommodating chamber under the condition that the writing pen is not accommodated in the accommodating chamber. The outer surface of the writing pen and the inner wall of the containing cavity are different in color. The recognition module is arranged on the pen box body, electrically connected with the color sensor module and used for receiving the color information and outputting taking and placing state information according to the color information, and the taking and placing state information is used for indicating that the writing pen is in a put-in state or a take-out state. According to the pen box provided by the invention, the problem of misrecognition caused by detecting the taking and placing state information of the writing pen by using a Hall sensor at present can be solved.

Description

Technical Field

[0001] This application relates to the technical field of screen interaction, and in particular to a pen case and writing display system. Background Technology

[0002] To improve the user's writing interaction experience with the writing display, the display needs to recognize the placement and removal status of the accompanying writing pen. Currently, Hall effect sensors are typically used to detect the placement and removal status information of the writing pen.

[0003] However, the scheme of using Hall sensors to detect the pen's placement and removal status information has the problem of being prone to misidentification. Summary of the Invention

[0004] This application provides a pen case and writing display system that can solve the problem of misidentification in the current method of using Hall sensors to detect the pen's placement and removal status information.

[0005] To achieve the above-mentioned objectives, the embodiments of this application provide the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a pen case. The pen case includes a case body, a color sensor module, and an identification module. The case body has a receiving chamber for accommodating a writing pen. The color sensor module is disposed in the case body and is used to detect the color information of a measured object. When a writing pen is contained in the receiving chamber, the measured object is the outer surface of the writing pen; when no writing pen is contained in the receiving chamber, the measured object is the inner wall of the receiving chamber. The outer surface of the writing pen and the inner wall of the receiving chamber are different colors. The identification module is disposed in the case body and electrically connected to the color sensor module, and is used to receive the detected color information and output placement / removal status information based on the detected color information. The placement / removal status information is used to indicate whether the writing pen is in a placed state or a removed state.

[0007] It should be noted that "placed" refers to the pen being placed in the receiving chamber, while "removed" refers to the pen not being placed in the receiving chamber.

[0008] In the pen case provided in this embodiment, the outer surface of the writing pen and the inner wall of the receiving chamber are different colors, which can be used as a feature to distinguish whether the object being tested is the outer surface of the writing pen or the inner wall of the receiving chamber. This embodiment uses a color sensor module to detect the color information of the object being tested, and a recognition module distinguishes whether the object being tested is the outer surface of the writing pen or the inner wall of the receiving chamber based on the detection results of the color sensor module. This allows it to distinguish whether the writing pen is placed in the receiving chamber, i.e., whether the writing pen is in an inserted or removed state.

[0009] Because Hall effect sensors are susceptible to magnetic field interference, current solutions that use Hall effect sensors to detect the placement and removal status of a writing pen suffer from misidentification. However, in the pen case provided in this embodiment, the color sensor module is less susceptible to magnetic field interference, resulting in higher accuracy in color detection. Based on this more accurate color detection, the recognition module can obtain more accurate information about the placement and removal of the writing pen, thus solving the problem of misidentification inherent in current solutions that use Hall effect sensors to detect the placement and removal status of the writing pen.

[0010] In some embodiments of this application, when the detected color information matches the inner wall color information, the pick-up / placement status information is first status information, used to indicate that the writing pen is in the pick-up / placement state. When the detected color information does not match the inner wall color information, the pick-up / placement status information is second status information, used to indicate that the writing pen is in the placement state.

[0011] As a non-limiting embodiment, the color sensor module includes a light-emitting element and a color sensor. The light-emitting element is opposite to the receiving chamber and is used to emit white light into the receiving chamber. The color sensor is opposite to the receiving chamber and is used to receive the reflected light from the white light, determining the color information of the reflected light as the detected color information.

[0012] In some embodiments, the pen case body further includes a detection chamber, specifically for accommodating a color sensor module. The detection chamber communicates with the accommodating chamber and is used for transmitting white light to the accommodating chamber and for reflecting light back to the detection chamber.

[0013] Optionally, the inner wall of the receiving chamber is black.

[0014] As an optional embodiment, the pen case includes multiple separately arranged detection chambers, multiple separately arranged receiving chambers, and multiple color sensor modules. Each detection chamber is used to receive one color sensor module. Each receiving chamber is used to receive one writing pen. Each color sensor module is used to detect the color information of the object being measured corresponding to one receiving chamber.

[0015] As another optional embodiment, the color sensor module is a module integrating multiple color sensor sub-modules. The receiving chamber has multiple receiving slots arranged side-by-side. Each receiving slot is used to receive a writing pen. Each color sensor sub-module is used to detect the color information of the object being measured corresponding to a given receiving slot. The recognition module is specifically used to receive the detected color information output by each color sensor sub-module.

[0016] Optionally, the color sensor module is used to periodically detect the detected color information. The recognition module is also used to: determine the color information of the outer surface of the writing pen as the matching preset color information when the detected color information matches one of a plurality of preset color information; and output handwriting indication information when the detected color information changes from the matching preset color information to the inner wall color information, the handwriting indication information being used to instruct the writing display screen to set the handwriting color of the writing pen's electronic handwriting to the color corresponding to the matching preset color information. Each preset color information is used to indicate the color of the outer surface of a writing pen, and different preset color information indicates different colors.

[0017] In some alternative designs, the pen case also includes a wireless communication module. The wireless communication module is located within the pen case body. This module is electrically connected to the recognition module and transmits the pick-up / placement status information and the color of the detected object output by the recognition module to the writing display screen.

[0018] Secondly, embodiments of this application also provide a writing display system. This writing display system includes a pen case, a writing pen, and a writing display as provided in any embodiment of the first aspect. The writing pen can be placed in and removed from the receiving cavity of the pen case for the user to write on the writing display. The writing display is communicatively connected to the pen case to receive information on the pen's placement and removal status output by the pen case.

[0019] In some embodiments, the writing display screen is further configured to: display a writing mode interface when the pen is in the removed state indicated by the pen removal / placement status information; and display a reading mode interface when the pen is in the placed state indicated by the pen removal / placement status information; wherein the writing mode interface has more writing operation areas than the reading mode interface, for the user to perform writing operations using the pen.

[0020] It is understood that the beneficial effects of the writing display system provided by the second aspect of the above-described embodiments can be referred to the beneficial effects of the pen case provided by the first aspect of the embodiments, and will not be repeated here. Attached Figure Description

[0021] To more clearly illustrate the technical features of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the 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.

[0022] Figure 1 This is a schematic diagram of a writing display system provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram showing a comparison between the writing mode interface and the reading mode interface provided in the embodiments of this application.

[0024] Figure 3 This is a cross-sectional schematic diagram of a pen box provided in an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of a single-item detection scheme provided in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram illustrating the detection principle of the color sensor module provided in an embodiment of this application.

[0027] Figure 6 A circuit diagram of a pen box provided in an embodiment of this application.

[0028] Figure 7 This is a schematic diagram of a multi-detection scheme provided in an embodiment of this application.

[0029] Figure 8 This is a schematic diagram of another multi-detection scheme provided in an embodiment of this application.

[0030] Figure 9 A schematic diagram illustrating the establishment of a wireless communication connection between the pen case and the writing display screen provided in the embodiments of this application.

[0031] 000 - Writing display system; 100 - Writing display; 200 - Pen case; 210 - Pen case body; 211 - Receiving chamber; 211a - Inner wall of the receiving chamber; 211b - Receiving slot; 212 - Opening; 213 - Detection chamber; 220 - Color sensor module; 220a - Color sensor sub-module; 221 - Light-emitting element; 222 - Color sensor; 223 - Circuit board; 230 - Recognition module; 300 - Writing pen; 310 - Outer surface of the writing pen. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort should all fall within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] In the description of this application, it should be understood that the numbering itself, such as "first", "second", etc., is only used to distinguish the described objects and has no sequential or technical meaning, and should not be construed as specifying or implying the importance of the described objects.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "electrical connection" and "communication connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediate medium, and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In the description of this application, the term "multiple" refers to two or more. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] For example, please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a writing display system 000 provided in an embodiment of this application.

[0039] The writing display system 000 may include a writing display 100, a pen case 200, and a writing pen 300.

[0040] The writing display screen 100 is a display screen that supports interactive methods such as touch and writing. For example, the writing display screen 100 can be a teaching screen, an art screen, a conference screen, etc.

[0041] The writing pen 300 is used by the user to perform writing operations such as clicking and drawing on the writing display screen 100.

[0042] To enhance the user's interactive experience with the writing display 100, the writing display 100 can synchronously respond to the writing operations performed by the user using the writing pen 300. For example, when the user performs a click operation with the writing pen 300, an icon sufficient to indicate that the click has been made is displayed at the click location; or, when the user performs a line drawing operation with the writing pen 300, the line trajectory is displayed.

[0043] Pen case 200 is a container for holding writing pen 300. When writing pen 300 is not in use, it can be placed in pen case 200, thus preventing loss. When writing pen 300 is needed, it can be removed from pen case 200, allowing the user to perform writing operations on writing display screen 100. Figure 1 This demonstrates the state of affairs.

[0044] In practical implementation, the pen case 200 can be designed as a container to hold one or more writing pens 300, depending on user needs. For example, if the writing display screen 100 is an art screen, it is usually equipped with multiple writing pens 300 of different colors to facilitate drawing different colors on the art screen. In this case, the pen case 200 can be designed as a container to hold multiple writing pens 300. Furthermore, although... Figure 1 Only one pencil case 200 was shown, but in actual implementation, the number of pencil cases 200 can be more, such as two, three, etc.

[0045] Optionally, the pen case 200 can be detachably mounted to any non-display location on the writing display screen 100 using a magnetic or other removable method. For example, the pen case 200 can be mounted on any side of the writing display screen 100; alternatively, it can be mounted on the back of the display surface of the writing display screen 100; or, for example, it can be mounted on the bottom non-display area of ​​the display surface of the writing display screen 100. Figure 1 This situation was demonstrated.

[0046] Alternatively, the pen case 200 can also be integrated with the writing display screen 100 by a non-removable method such as injection molding. In this case, the pen case 200 can also be regarded as part of the writing display screen 100.

[0047] Alternatively, the pen case 200 can also be set separately from the writing display screen 100, that is, not set on the writing display screen 100, but at any position within a limited distance range of the writing display screen 100 (which can be set as needed).

[0048] To improve the user's writing interaction experience with the writing display 100, the writing display 100 needs to recognize the pick-up and put-down status of the writing pen 300 so as to perform the next interactive operation based on the pick-up and put-down status of the writing pen 300.

[0049] For example, the writing display 100 can prompt the user to put the writing pen 300 back into the pen case 200 in time to avoid loss if no writing operation is detected, based on the detected state of the writing pen 300 being removed.

[0050] For example, the writing display 100 can display a handwriting color menu based on the detected removal status of the writing pen 300. The handwriting color menu can provide a variety of handwriting colors for the user to choose from, and the selected handwriting color is used as the handwriting color of the electronic handwriting generated by the user when performing writing operations with the writing pen 300.

[0051] For example, the writing display screen 100 can automatically enter the writing mode interface based on the detected state of the writing pen 300 being removed; it can also automatically enter the display reading mode interface based on the detected state of the writing pen 300 being placed back in. At the same time, it can also automatically save the handwriting on the writing mode page, providing users with a seamless writing interaction experience.

[0052] The writing mode interface has more writing operation areas than the reading mode interface, allowing users to perform writing operations using the writing pen 300.

[0053] For example, such as Figure 2 As shown, the writing area can be Figure 2 The writing mode interface shown in (a) is more... Figure 2 The extra blank area at the edges of the reading mode interface shown in (b) is compared to... Figure 2 Regarding (b) in this context, Figure 2 (a) creates a blank edge area by reducing the area of ​​the displayed content on the screen, and Figure 2 (a) shows the writing on the edge blank area of ​​the writing pen 300.

[0054] In some other embodiments, the writing area may be an additional area in the writing mode interface that allows for writing operations compared to the reading mode interface. Writing operations include, but are not limited to, clicking, drawing lines, and other operations performed by the writing pen 300.

[0055] Taking the writing operation as a click operation as an example, the writing operation area can be a menu area for the writing pen 300 to click.

[0056] The three examples above are merely illustrations of the requirement for the writing display screen 100 to recognize the placement and removal status of the writing pen 300. In actual implementation, the writing display screen 100 may also have more requirements for recognizing the placement and removal status of the writing pen 300.

[0057] The writing display 100 typically detects the placement / removal status information of the writing pen 300 via the pen holder 200. This placement / removal status information indicates whether the writing pen 300 is in a removed or placed state. To obtain this placement / removal status information detected by the pen holder 200, the writing display 100 establishes a communication connection with the pen holder 200, such as a wired and / or wireless communication connection, so that the pen holder 200 can transmit the detected placement / removal status information of the writing pen 300 to the writing display 100. Thus, the writing display 100 can identify the placement / removal status of the writing pen 300 based on this information. Currently, the pen holder 200 typically uses a Hall sensor to detect the placement / removal status information of the writing pen 300. However, because Hall sensors are susceptible to magnetic field interference, current methods of detecting the placement / removal status information of the writing pen 300 using Hall sensors suffer from misidentification.

[0058] To address this issue, this application provides a pen case 200. The pen case 200 utilizes color information detected by a color sensor module to identify the placement and removal status of the writing pen 300. Because the color sensor module is less susceptible to magnetic field interference, the detection accuracy of the color information is higher, and the pen case 200's accuracy in identifying the placement and removal status of the writing pen 300 is also higher. This solves the problem of misidentification inherent in current pen case 200 solutions that use Hall effect sensors to detect the placement and removal status of the writing pen 300.

[0059] The following is combined Figures 3 to 9 The pencil case 200 provided in the embodiments of this application will be described by way of example.

[0060] For example, please refer to Figure 3 , Figure 3 This is a cross-sectional schematic diagram of a pen box 200 provided in an embodiment of this application.

[0061] The pen case 200 may include a pen case body 210, a color sensor module 220, and a recognition module 230. Each component is described below.

[0062] First, let's describe the pencil case body 210.

[0063] The pen case body 210 has a receiving chamber 211 for accommodating the writing pen 300.

[0064] for example, Figure 3 In this design, the receiving chamber 211 is constructed as a groove recessed inward from the outer surface of the pen case 210, adapted to the size of the writing pen 300. An opening 212 formed on the outer surface of the receiving chamber 211 allows the writing pen 300 to be inserted into the receiving chamber 211, thus being received within the receiving chamber 211 in an inserted state, or to be withdrawn from the receiving chamber 211, thus being not received within the receiving chamber 211 in a removed state. When the writing pen 300 is in the removed state, the user can perform writing operations on the aforementioned writing display screen 100.

[0065] Of course, in some other embodiments, the pen box body 210 can also have other structures, and its construction is not limited to other methods. Figure 3 The limitations of the structure shown.

[0066] Next, the color sensor module 220 will be explained.

[0067] The color sensor module 220 is disposed in the pen box body 210, for example, hidden inside the pen box body 210, and is used to detect the color information of the object being tested.

[0068] The technical term "color information" used in the embodiments of this application refers to information that can represent a certain color. For example, it can be RGB values, etc. For example, the RGB values ​​R(255), G(255), B(255) are used to represent white. Another example is character information that directly represents color, such as the binary string "1111" used to represent white.

[0069] The detection principle of the color sensor module 220 is as follows:

[0070] The color sensor module 220 emits white light towards the object being measured. The white light is diffusely reflected by the object, forming diffuse reflected light. This diffuse reflected light is then received by the color sensor module 220. Since the color of the diffuse reflected light is determined by the color of the object being measured, the color sensor module 220 can obtain the color information of the object by identifying the color information of the diffuse reflected light.

[0071] Figure 3 When the receiving chamber 211 contains the writing pen 300, the object being measured by the color sensor module 220 is the outer surface 310 of the writing pen. In this case, the color sensor module 220 detects the color information of the outer surface 310 of the writing pen. When the receiving chamber 211 does not contain the writing pen 300, the object being measured is the inner wall 211a of the receiving chamber 211. In this case, the color sensor module 220 detects the color information of the inner wall 211a of the receiving chamber 211.

[0072] In this embodiment, the outer surface 310 of the writing pen and the inner wall 211a of the receiving chamber 211 are set to different colors to facilitate differentiation between them. Thus, the detection color information detected by the color sensor module 220 varies depending on whether the writing pen 300 is contained within the receiving chamber 211, and can be used to identify whether the writing pen 300 is contained within the receiving chamber 211, i.e., to identify the placement or removal status of the writing pen 300. This embodiment utilizes the recognition module 230 to analyze the detection color information detected by the color sensor module 220 and identify the placement or removal status of the writing pen 300. Unless otherwise stated, subsequent embodiments will use a red outer surface 310 and a black inner wall 211a of the receiving chamber 211 as examples.

[0073] Next, the identification module 230 will be explained in detail.

[0074] The recognition module 230 is disposed in the pen box body 210, for example, hidden inside the pen box body 210, and is electrically connected to the color sensor module 220. It is used to receive the detected color information and output the pick-up and put-down status information according to the detected color information. The pick-up and put-down status information is used to indicate whether the writing pen 300 is in the put-in state or the take-out state.

[0075] It should be noted that the "insertion state" refers to the state in which the writing pen 300 is contained in the receiving chamber 211, and the "removal state" refers to the state in which the writing pen 300 is not contained in the receiving chamber 211.

[0076] The pick-and-place status information is information that can indicate whether the writing pen 300 is in the put-in or take-out state. For example, when the pick-and-place status information is bit1, it is used to indicate that the writing pen 300 is in the put-in state; when the pick-and-place status information is bit0, it is used to indicate that the writing pen 300 is in the take-out state.

[0077] In the pen case 200 provided in this embodiment, the outer surface 310 of the writing pen and the inner wall 211a of the receiving chamber 211 have different colors, which can be used as a feature to distinguish whether the object being tested is the outer surface 310 of the writing pen or the inner wall 211a of the receiving chamber 211. This embodiment detects the color information of the object being tested through a color sensor module 220, and distinguishes whether the object being tested is the outer surface 310 of the writing pen or the inner wall 211a of the receiving chamber 211 based on the detection results of the color sensor module 220. Thus, it can distinguish whether the writing pen 300 is placed in the receiving chamber 211, that is, whether the writing pen 300 is in the inserted state or the removed state.

[0078] Please refer to the reference. Figure 4 , Figure 4This is a schematic diagram of a single-pen detection scheme provided in an embodiment of this application. The single-pen detection scheme refers to the detection scheme for the placement and removal status of a single writing pen 300.

[0079] The detection principle of the single-item detection scheme is as follows:

[0080] First, the identification module 230 sends a module control command to the color sensor module 220 to control the color sensor module 220 to be in the detection state to detect the detection color information of the object being measured, such as controlling the color sensor module 220 to be in the detection state when it is powered on.

[0081] Secondly, under the control of the module control command of the recognition module 230, the color sensor module 220 emits white light towards the object being measured.

[0082] When the writing pen 300 is housed in the receiving chamber 211, white light is diffusely reflected by the outer surface 310 of the writing pen to form red reflected light. The red reflected light is incident on the color sensor module 220, received and identified by the color sensor module 220, thereby obtaining detection color information that can represent red and uploading it to the recognition module 230.

[0083] When the writing pen 300 is not housed in the receiving chamber 211, white light is transmitted to the inner wall 211a of the receiving chamber 211. Since the inner wall 211a is black, the white light is absorbed by the black inner wall 211a, causing the color sensor module 220 to detect no reflected light or only a very small amount of reflected light. This allows it to obtain detection color information that represents black and upload it to the recognition module 230. Finally, the recognition module 230 determines the placement / removal status information based on the detection color information and outputs it to the writing display screen 100.

[0084] In practice, the detected color information can be RGB values. The recognition module 230 can distinguish colors by comparing the detected RGB values ​​with a set RGB value range. If the detected RGB value is within the set range, the color within that range can be identified. For example, the recognition module 230 sets the RGB values ​​for pure red to 255, 0, 0. RGB values ​​within ±5 are considered pure red. If the color sensor module 220 detects uploaded RGB values ​​of 250, 4, 5, the recognition module 230 identifies it as pure red. Other color recognition methods follow a similar pattern.

[0085] In the pencil case 200 provided in this embodiment, because the color sensor module 220 is not easily affected by magnetic field interference, the accuracy of color information detection is higher. Based on the more accurate color detection information, the recognition module 230 can obtain more accurate information on the placement and removal status of the writing pen 300, thus solving the problem of easy misidentification in the current pencil case 200 scheme that detects the placement and removal status information of the writing pen 300 through the Hall sensor.

[0086] In some embodiments of this application, the recognition module 230 is provided to output pick-up and put-down status information based on detected color information, as follows:

[0087] When the detected color information matches the inner wall color information, the above-mentioned pick-up and put-down status information is the first status information, used to indicate that the writing pen 300 is in the pick-up state; when the detected color information does not match the inner wall color information, the above-mentioned pick-up and put-down status information is the second status information, used to indicate that the writing pen 300 is in the put-in state.

[0088] It should be noted that if the color represented by the detected color information is the same as or similar to the color represented by the inner wall color information, then the detected color information is considered to match the inner wall color information. In specific implementation, taking RGB values ​​as an example, if the RGB values ​​are the same, then the colors are the same; if the difference between the RGB values ​​is less than a preset threshold (which can be set as needed), then the colors are similar.

[0089] As described above, when the receiving chamber 211 does not contain the writing pen 300, the object being measured is the inner wall 211a of the receiving chamber 211. In this case, the color information detected by the color sensor module 220 is theoretically the color information corresponding to the color of the inner wall 211a of the receiving chamber 211, referred to simply as the inner wall color information.

[0090] As described above, when the cavity 211 contains the writing pen 300, the object being measured is the outer surface 310 of the writing pen. In this case, the color information detected by the color sensor module 220 is theoretically the color information corresponding to the color of the outer surface 310 of the writing pen, not the color information of the inner wall.

[0091] Therefore, whether the color information detected by the color sensor module 220 matches the color information of the inner wall is the distinguishing factor in whether the writing pen 300 is placed in the receiving chamber 211. Thus, the recognition module 230 can determine whether the writing pen 300 is placed in the receiving chamber 211 by judging whether the detected color information matches the color information of the inner wall, so as to output corresponding status information to indicate whether the writing pen 300 is in the inserted or removed state.

[0092] Of course, in some other embodiments, the identification module 230 can also use other methods to output pick-up and put-down status information based on the detected color information.

[0093] For example, if the detected color information does not match any of the multiple preset color information, the above-mentioned pick-up and put-down state information is the first state information, used to indicate that the writing pen 300 is in the pick-up state; if the detected color information matches any of the multiple preset color information, the above-mentioned pick-up and put-down state information is the second state information, used to indicate that the writing pen 300 is in the put-in state.

[0094] Each preset color information is used to indicate the color of the outer surface 310 of a writing pen, and different preset color information indicates different colors.

[0095] In this embodiment, since multiple writing devices are not required to be housed in a specific order within the housing chamber by matching any one of multiple preset color information.

[0096] For example, if the detected color information changes from matching the inner wall color information to matching other color information, then the above-mentioned pick-and-place status information is the first status information; if the detected color information changes from matching other color information to matching the inner wall color information, then the above-mentioned pick-and-place status information is the second status information.

[0097] It should be noted that the other color information is used to represent colors that are different from the inner wall color, and is any one of the aforementioned preset color information.

[0098] As a non-limiting embodiment, please refer to Figure 5 , Figure 5 This is a schematic diagram illustrating the detection principle of the color sensor module 220 provided in an embodiment of this application. The diagram shows the structure of the color sensor module 220.

[0099] The color sensor module 220 includes a light-emitting element 221, a color sensor 222, and a circuit board 223. The light-emitting element 221 and the color sensor 222 are electrically connected to the circuit board 223, which is used to electrically connect to the aforementioned recognition module 230.

[0100] The figure shows two light-emitting elements 221, respectively positioned on either side of the color sensor 222. This allows more white light to enter the receiving chamber 211, ensuring sufficient reflected light for detection. Of course, in other embodiments, the number and position of the light-emitting elements 221 are not limited. Figure 5 limit.

[0101] In this design, the light-emitting element 221 is opposite to the receiving chamber 211 and is used to emit white light into the receiving chamber 211. The color sensor 222 is opposite to the receiving chamber 211 and is used to receive the reflected light from the white light and determine the color information of the reflected light as the detected color information. For ease of distinction, the solid line with an arrow indicates white light, and the dashed line with an arrow indicates reflected light.

[0102] It should be noted that the light-emitting element 221 being opposite to the receiving chamber 211 means that the light-emitting element 221 can emit light directly into the receiving chamber 211; the color sensor 222 being opposite to the receiving chamber 211 means that the color sensor 222 can be directly incident on by the reflected light of white light.

[0103] It should be noted that you should refer to the following: Figure 3 The entire color sensor module 220 is disposed within the detection chamber 213. In this case, the light-emitting element 221 and the color sensor 222, which are opposite to the receiving chamber 211, are disposed within the detection chamber 213.

[0104] In some other embodiments, the circuit board 213 of the color sensor module 220 can be embedded in the pen box body 210, and the light-emitting element 221 and the color sensor 222 on the circuit board 213 can also be aligned with or pass through the opening of the inner wall 211a of the receiving chamber 211 so as to face the side of the inner wall 211a facing the receiving chamber 211.

[0105] In some other embodiments, the entire color sensor module 220 may be disposed on the inner wall 211a of the receiving chamber 211.

[0106] The inner wall 211a of the accommodating chamber 211 mentioned in the embodiments of this application refers to the inner wall surface of the accommodating chamber 211.

[0107] In this embodiment, the white light emitted by the light-emitting element 221 into the receiving chamber 211 can undergo diffuse reflection upon encountering the object being measured, producing reflected light of the same color as the object. When the object being measured is the inner wall 211a of the receiving chamber 211, the color of the reflected light is the color of the inner wall; if the inner wall 211a of the receiving chamber 211 is black, no reflected light will be detected. When the object being measured is the outer surface 310 of the writing pen, the color of the reflected light is the color of the outer surface 310 of the writing pen. Therefore, the color of the reflected light from the white light emitted by the light-emitting element 221 can characterize the color of the object being measured. Based on this, in this embodiment, the color sensor 222 can determine the detected color information as the color information of the reflected light by receiving the reflected light from the white light.

[0108] Specifically, please refer to the following: Figure 6 , Figure 6 A circuit diagram of the pen box 200 provided in an embodiment of this application.

[0109] In the diagram, LED1 and LED2 are two light-emitting elements 221; U1 is a color sensor 222, model TCS34727FN; U2 is a recognition module 230, model STM32 microcontroller.

[0110] U1 has an IIC interface, namely pins SCL and SDA, which connects to U2 to facilitate information transmission between U1 and U2, as described above. Figure 4 The module control commands and color information detection are described. Of course, in other embodiments, the light-emitting element 221, color sensor 222, and recognition module 230 can also be implemented using other devices. Furthermore, the color sensor 222 and recognition module 230 can also communicate via other methods besides IIC, such as USART and SPI.

[0111] Pins PA6 and PA7 of U2 can be used as USART serial port pins, connecting to the USART serial port via serial signal lines. Figure 1 The writing display screen 100 shown establishes a wired communication connection to facilitate the transmission of information between the pen holder 200 and the writing display screen 100, such as the aforementioned pick-up and put-down status information. Of course, in some other embodiments, the identification module 230 and the writing display screen 100 can also communicate wirelessly.

[0112] In addition to LED1, LED2, U1, and U2, the circuitry of the pen case 200 can incorporate more components to enable it to recognize the pen's placement and removal status. This section focuses on LED1, LED2, U1, and U2, aiming to explain the specific selection of the crucial light-emitting element 221, color sensor 222, and recognition module 230 for achieving the aforementioned functions in the pen case 200. Other components are not detailed here.

[0113] In some embodiments, please continue to refer to Figure 3 The pen case body 210 also has a detection chamber 213, which is specifically used to accommodate the color sensor module 220. The detection chamber 213 communicates with the receiving chamber 211 and is used to transmit white light to the receiving chamber 211 and to reflect the reflected light back to the detection chamber 213.

[0114] In this embodiment, the detection chamber 213 is connected to the receiving chamber 211, so that the white light emitted by the color sensor module 220 to the receiving chamber 211 can be transmitted to the receiving chamber 211, and the reflected light can also be reflected back to the detection chamber 213 and received by the color sensor module 220.

[0115] It should be noted that, in order not to obstruct light transmission, there are no light-blocking objects in the area between the color sensor module 220 and the receiving chamber 211 for both the detection chamber 213 and the receiving chamber 211. As an optional embodiment, please refer to... Figure 7 , Figure 7 This is a schematic diagram of a multi-pen detection scheme provided in an embodiment of this application. The diagram shows a structure of a pen case 200 that can hold multiple writing pens 300.

[0116] In the pencil case 200, the pencil case body 210 includes multiple separately configured detection chambers 213, multiple separately configured receiving chambers 211, and multiple color sensor modules 220.

[0117] The figure shows three detection chambers 213, three receiving chambers 211, and three color sensor modules 220. In some other embodiments, the number of detection chambers 213, receiving chambers 211, and color sensor modules 220 may be more or fewer. For ease of distinction, the three detection chambers 213 are referred to as detection chamber one, detection chamber two, and detection chamber three, respectively; the three color sensor modules 220 are referred to as color sensor module one, color sensor module two, and color sensor module three, respectively; and the three receiving chambers 211 are referred to as receiving chamber one, receiving chamber two, and receiving chamber three, respectively.

[0118] Each detection chamber 213 is used to accommodate a color sensor module 220, that is, detection chamber one is used to accommodate color sensor module one, detection chamber two is used to accommodate color sensor module two, and detection chamber three is used to accommodate color sensor module three.

[0119] Each of the receiving chambers 211 is used to receive a writing pen 300, that is, receiving chamber one is used to receive writing pen one, detection chamber two is used to receive writing pen two, and detection chamber three is used to receive writing pen three.

[0120] Each color sensor module 220 is used to detect the color information of the object being tested corresponding to a receiving chamber 211. For example, color sensor module one is used to detect the color information of the object being tested (the inner wall of receiving chamber one or the outer surface of pen one) corresponding to receiving chamber one, color sensor module two is used to detect the color information of the object being tested (the inner wall of receiving chamber two or the outer surface of pen two) corresponding to receiving chamber two, and color sensor module three is used to detect the color information of the object being tested (the inner wall of receiving chamber three or the outer surface of pen three) corresponding to receiving chamber three.

[0121] This embodiment provides a pen case 200 that supports the detection of the placement and removal status of multiple writing pens 300. Since the pen case 200 includes multiple separately arranged receiving chambers 211 and multiple separately arranged detection chambers 213, the color sensor modules 220 located in each detection chamber 213 can detect the detection color information of the object to be tested corresponding to each receiving chamber 211 without interfering with each other.

[0122] As another alternative embodiment, please refer to Figure 8 , Figure 8 This is a schematic diagram of another multi-pen detection scheme provided in an embodiment of this application. The figure shows another structure of a pen case 200 that can hold multiple writing pens 300.

[0123] The color sensor module 220 is a module that integrates multiple color sensor sub-modules 220a. Figure 8 The image shows three color sensor sub-modules 220a. In some other embodiments, the number of color sensor sub-modules 220a may be more or less. For ease of distinction, the three color sensor sub-modules 220a are referred to as color sensor sub-module one, color sensor sub-module two, and color sensor sub-module three, respectively.

[0124] Specifically, the structure of a single color sensor submodule 220a can be referred to Figure 5 Understanding the structure of the color sensor module 220. That is, the color sensor sub-module 220a may include... Figure 5 The light-emitting element 221, color sensor 222, and circuit board 223 are included. It should be noted that each color sensor sub-module 220a can share a single circuit board 223, that is, the light-emitting element 221 and color sensor 222 of each color sensor sub-module 220a are all integrated on a single circuit board 223.

[0125] The receiving chamber 211 has multiple receiving slots 211b arranged side by side. Figure 8 The image shows three receiving slots 211b. In some other embodiments, the number of receiving slots 211b may be more or less. For ease of distinction, the three receiving slots 211b are referred to as receiving slot one, receiving slot two, and receiving slot three, respectively.

[0126] Each of the receiving slots 211b is used to receive one writing pen 300, that is, receiving slot one is used to receive writing pen one, receiving slot two is used to receive writing pen two, and receiving slot three is used to receive writing pen three.

[0127] Each color sensor sub-module 220a is used to detect the color information of the object to be measured corresponding to a receiving slot 211b. That is, color sensor sub-module one is used to detect the color information of the object to be measured (the inner wall of receiving slot one or the outer surface of writing pen one) corresponding to receiving slot one; color sensor sub-module two is used to detect the color information of the object to be measured (the inner wall of receiving slot two or the outer surface of writing pen two) corresponding to receiving slot two; and color sensor module three is used to detect the color information of the object to be measured (the inner wall of receiving slot three or the outer surface of writing pen three) corresponding to receiving slot three.

[0128] This embodiment provides another pen case 200 that can support the detection of the placement and removal status of multiple writing pens 300. Because the multiple receiving slots 211b are arranged side by side, each color sensor 222 can detect the color information of the object to be tested corresponding to each receiving slot 211b.

[0129] In this embodiment, the various color sensors 222 used to detect the placement and removal states of different writing pens 300 are integrated into the same color sensor module 220. This improves the integration level of the color sensor module 220, reduces its size, and consequently reduces the size of the pen case 200. With the pen case 200 positioned on the side of the writing display screen 100, the space occupied by the pen case 200 on the relatively cramped side area is reduced.

[0130] Regarding the pen case 200 that can hold multiple writing pens 300, in some embodiments, if the outer surfaces 310 of the multiple writing pens 300 are of different colors, the writing display screen 100 can support each writing pen 300 of different colors to write electronic handwriting of the corresponding color.

[0131] To achieve this function, the color sensor module 220 may optionally be used to periodically detect color information. Periodically detecting color information means detecting color information at a specific frequency, such as 200 times per second.

[0132] In this case, the recognition module 230 is also used to: determine the color information of the outer surface 310 of the writing pen 300 as the matching preset color information when the detected color information matches one of multiple preset color information; and output handwriting indication information when the detected color information changes from the matching preset color information to the inner wall color information. The handwriting indication information is used to instruct the writing display screen 100 to set the handwriting color of the electronic handwriting of the writing pen 300 to the color corresponding to the matching preset color information. Each preset color information is used for the color of the outer surface 310 of one writing pen 300, and different preset color information indicates different colors.

[0133] It should be noted that since each preset color information is used for the color of the outer surface 310 of a writing pen 300, if the detected color information matches one of the multiple preset color information, it indicates that the detected color information does not match the inner wall color information, and the writing pen 300 is in the inserted state. Conversely, if the detected color information changes from a matched preset color information to the inner wall color information, it indicates that the detected color information matches the inner wall color information, and the writing pen 300 is in the removed state.

[0134] Accordingly, the writing display screen 100 is also used to receive handwriting indication information and, in response to a writing operation performed by the user using the writing pen 300, to set the handwriting color corresponding to the writing operation to the color corresponding to the preset color information, based on the handwriting indication information. It can be understood that, in this case, the writing operation performed by the writing pen 300 is a writing operation that can produce electronic handwriting, such as drawing lines or writing characters.

[0135] The matching here can be referred to the relevant instructions on matching the detected color information with the inner wall color information mentioned above.

[0136] This embodiment does not directly use the detected color information from the color sensor module 220 as the color information of the outer surface 310 of the writing pen. Instead, it uses a pre-defined color information to correct for the detection errors of the color sensor module 220, thereby obtaining more accurate color information for the outer surface 310 of the writing pen 300. Thus, when the writing display screen 100 shows the color of the electronic pen strokes from the writing pen 300, it is closer to the true color seen by the user.

[0137] Compared to the solution where the writing display 100 pops up a pen color menu so that the user can consciously select the pen color to set the pen color of the writing pen 300, this embodiment makes the setting of the pen color of the writing pen 300 imperceptible to the user, thus providing a better interactive experience.

[0138] It should be noted that, in order to avoid the situation where the writing colors of the writing pens 300 displayed on the writing display screen 100 become chaotic due to the removal of multiple writing pens 300 from the pen case 200, this embodiment can be applied to scenarios where only one writing pen 300 is removed from the pen case 200. In this case, the pen case 200 or the writing display screen 100 can output a prompt message reminding the user to put the previously removed pen back before removing the next one.

[0139] Of course, in some other embodiments, this embodiment can also be applied to scenarios where multiple writing pens 300 are removed from the pen case 200. In this case, to avoid confusion in the pen colors displayed on the writing display screen 100, the writing display screen 100 can, within a preset time after receiving the removal / placement status information, display pen marks with an interval less than a preset time threshold (set as needed, such as a shorter pen lifting time) according to the pen mark indication information. For other pen marks, a pen mark color menu will pop up for the user to select. Furthermore, in some other embodiments, if the pen case 200 can only hold one writing pen 300, a pen mark color menu can be popped up for the user to write electronic pen marks of different colors on the writing display screen 100.

[0140] Furthermore, in related technologies, the writing pen 300 is required to be placed in a fixed position in the pen case 200 so that when the writing pen 300 is detected to be placed in that fixed position, the color of the writing pen 300 is determined to be a preset color. However, this embodiment determines the color of the outer surface 310 of the writing pen 300 by comparing detected color information with multiple preset color information, allowing the writing pen 300 to be placed arbitrarily in the pen case 200. Figure 7 The multiple receiving chambers 211 shown Figure 8 Any of the multiple receiving slots 211b shown, without needing to be placed in a fixed position. Alternatively, please continue to refer to Figure 3 The inner wall 211a of the accommodating chamber 211 is black.

[0141] Because black absorbs all colors of light, when the inner wall 211a of the receiving chamber 211 is black, it is less likely to reflect light. This reduces the interference caused by reflected light entering the color sensor module 220. This improves the detection accuracy of the color sensor module 220, thereby reducing the risk of misidentification of the pen holder 200's pen placement / removal status information.

[0142] It should be noted that the entire inner wall 211a of the pencil case 200 can be set to black. The interior of the aforementioned detection chamber 213 is also part of the inner wall 211a of the pencil case 200.

[0143] In some alternative design approaches, for example, please refer to Figure 9 , Figure 9 A schematic diagram illustrating the establishment of a wireless communication connection between the pen case 200 and the writing display screen 100 provided in this embodiment of the application.

[0144] In this embodiment, the pen case 200 also includes a wireless communication module, which is disposed on the pen case body 210. Correspondingly, the writing display screen 100 may also be provided with a wireless communication module.

[0145] The wireless communication module is electrically connected to the identification module 230 and is used to transmit the pick-up and put-down status information output by the identification module 230 to the writing display screen 100. Specifically, the wireless communication module of the writing display screen 100 is used to receive the pick-up and put-down status information transmitted by the wireless communication module of the pen holder 200.

[0146] In practice, the information transmitted from the wireless communication module of the pen holder 200 to the wireless communication module of the writing display 100 is not limited to pick-up and put-down status information. Furthermore, the wireless communication module of the writing display 100 can also transmit information to the wireless communication module of the pen holder 200.

[0147] This embodiment, by setting a wireless communication module in the pen case 210, can wirelessly transmit the pen 300's pick-up and put-down status information to the writing display screen 100, so that the writing display screen 100 can perform the next operation based on the pen 300's pick-up and put-down status information, thereby improving the user interaction experience.

[0148] It should be noted that this embodiment is particularly applicable to scenarios where the pen holder 200 is an external pen holder 200 and needs to interact with the writing display screen 100. An external pen holder 200 refers to a pen holder 200 that is not integrated with the writing display screen 100. Because the external pen holder 200 is not integrated with the writing display screen 100, the external pen holder 200 and the writing display screen 100 establish a wired communication connection via a cable. This exposed cable significantly reduces the aesthetics of both the pen holder 200 and the writing display screen 100. Therefore, in this scenario, a wireless communication module can be used to establish a wireless communication connection to improve the aesthetics of the external pen holder 200 and the writing display screen 100.

[0149] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. It should be noted that, for those skilled in the art, several equivalent obvious modifications and / or equivalent substitutions can be made without departing from the technical principles of this application, and these obvious modifications and / or equivalent substitutions should also be considered within the scope of protection of this application.

Claims

1. A pencil case, characterized in that, include: The pen case body has a receiving chamber for holding a writing pen; A color sensor module is installed in the pen box body to detect the color information of the object being tested. When the writing pen is contained in the receiving chamber, the object being tested is the outer surface of the writing pen; when the writing pen is not contained in the receiving chamber, the object being tested is the inner wall of the receiving chamber; the outer surface of the writing pen and the inner wall of the receiving chamber are different colors. A recognition module is disposed in the pen box body and electrically connected to the color sensor module; The recognition module is used to receive the detected color information and output pick-up and put-down status information according to the detected color information. The pick-up and put-down status information is used to indicate whether the writing pen is in the put-in state or the take-out state.

2. The pencil case according to claim 1, characterized in that, When the detected color information matches the inner wall color information, the pick-up and put-down state information is the first state information, used to indicate that the writing pen is in the pick-up state; If the detected color information does not match the inner wall color information, the placement status information is a second status information used to indicate that the writing pen is in the placement state.

3. The pencil case according to claim 1, characterized in that, The color sensor module includes: A light-emitting element, opposite to the receiving chamber, is used to emit white light into the receiving chamber; A color sensor, opposite to the receiving chamber, is used to receive the reflected light of the white light and determine the color information of the reflected light as the detected color information.

4. The pencil case according to claim 3, characterized in that, The pen case also has a detection chamber, which is specifically used to accommodate the color sensor module. The detection chamber is connected to the receiving chamber and is used to transmit the white light to the receiving chamber and to reflect the reflected light back to the detection chamber.

5. The pencil case according to claim 4, characterized in that, The pen case includes multiple separately arranged detection chambers, multiple separately arranged receiving chambers, and multiple color sensor modules; Each of the detection chambers is used to accommodate one of the color sensor modules; each of the accommodating chambers is used to accommodate one of the writing pens; each of the color sensor modules is used to detect the detection color information of the object being tested corresponding to one of the accommodating chambers.

6. The pencil case according to claim 4, characterized in that, The color sensor module is a module that integrates multiple color sensor sub-modules; the receiving chamber has multiple receiving slots arranged side by side; Each of the aforementioned receiving slots is used to receive one of the writing pens; each of the aforementioned color sensor sub-modules is used to detect the detected color information of the object being tested corresponding to one of the receiving slots; The recognition module is specifically used to receive the detected color information output by each of the color sensor sub-modules.

7. The pencil case according to claim 5 or 6, characterized in that, The color sensor module is used to periodically detect the detected color information; The recognition module is further configured to: determine the color information of the outer surface of the writing pen as the matching preset color information when the detected color information matches one of a plurality of preset color information; and output handwriting indication information when the detected color information changes from the matching preset color information to the inner wall color information, wherein the handwriting indication information is used to instruct the writing display screen to set the handwriting color of the electronic handwriting of the writing pen to the color corresponding to the matching preset color information. Each of the preset color information is used to indicate the color of the outer surface of the writing pen, and different preset color information indicates different colors.

8. The pencil case according to any one of claims 1 to 6, characterized in that, It also includes a wireless communication module, which is disposed in the pen box body; The wireless communication module is electrically connected to the identification module and is used to transmit the pick-up and put-down status information output by the identification module to the writing display screen.

9. A writing display screen system, characterized in that, include: The pencil case as described in any one of claims 1 to 8; Writing pen; The writing pen can be housed in the receiving chamber of the pen case and can be removed from the receiving chamber for the user to use for writing on the writing display screen; A writing display screen is used to communicate with the pen case to receive the pen's placement and removal status information output by the pen case.

10. The pencil case according to claim 9, characterized in that, The writing display screen is also used for: When the pen's placement status information indicates that the pen is in the removed state, the writing mode interface is displayed; When the pen's placement status information indicates that the pen is in the placed state, the reading mode interface is displayed; The writing mode interface has more writing operation areas than the reading mode interface, allowing users to perform writing operations using the writing pen.

Images