Synchronous transmitting unit, handwriting pen, handwriting system and signal transmitting method

Abstract

The invention relates to a synchronous transmitting unit, a handwriting pen, a handwriting system and a signal transmitting method. The synchronous transmitting unit comprises a wireless signal generating element, an optical signal generating element and a light guide element. The system has the advantages that the wireless signal generating element and the optical signal generating element are integrated by utilizing the synchronous transmitting unit, so that wireless control signals and optical signals can be synchronously transmitted at the same point, and synchronous transmission is realized; the wireless signal generating element and the optical signal generating element are integrated by utilizing the synchronous transmitting unit, so that the arrangement difficulty of the wireless signal generating element and the optical signal generating element in the small pen body is reduced, the device cost is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of handwriting instruments and handwriting methods, and in particular to a synchronous transmitting unit, a handwriting pen, a handwriting system, a signal transmitting method, a computer device, and a computer-readable storage medium. Background Art

[0002] Traditional notepads record text on paper. However, due to limitations such as paper's fragility and low reusability, using traditional paper to write large amounts of text can lead to waste in certain applications, hindering sustainable development. To achieve the reusability of writing materials, touch input is often used to handwrite text on smart devices. For example, using a stylus pen to write on a tablet or computer displays a pattern that closely resembles the actual handwriting. This touch input method is a promising alternative to traditional paper, and the ability to erase and reuse content promotes sustainable development.

[0003] Currently, tablet technology can be broadly categorized into two main types. The first type uses sensing before color display. A specific structure first senses the position of the stylus tip, and then, through its control system, displays color at the corresponding location, generating handwriting information along the handwritten trajectory. These tablet sensing methods can be categorized as resistive pressure sensing, electromagnetic pressure sensing, and capacitive touch sensing. Resistive pressure sensing consists of a deformable resistive film and a fixed resistive film. When pressure is applied to the tablet surface, the deformable film contacts the fixed film at the pressure point, sensing the position of the pen or finger. Electromagnetic pressure sensing utilizes the electromagnetic field generated by the tablet's internal circuitry to detect the interaction between the stylus tip's induction coil and the electromagnetic field, determining the tip's position. Capacitive touch sensing utilizes the body's capacitance to sense finger position. When a finger touches the tablet, capacitance is generated on the surface. With the aid of a sensor matrix and specialized chips, the tablet continuously tracks the user's handwriting capacitance and accurately locates the finger's position. After determining the trajectory of the writing object, this type of tablet generates pattern information along the corresponding trajectory, achieving a writing experience similar to that of traditional paper. However, the accuracy of the writing trajectory generated on this type of tablet depends on the accuracy of the sensor and the pixel density of the on-board display. Furthermore, the process of sensing before displaying introduces a certain degree of latency. High-speed and high-precision handwriting generation places higher demands on the tablet, resulting in higher costs.

[0004] The second category of tablets is represented by LCD tablets, which integrate sensing and display into a single unit, providing a writing experience more similar to that of traditional paper. LCD tablets have a simpler structure and do not require complex sensing and control circuitry. Their sensing and display capabilities rely solely on the physical properties of bistable liquid crystals, which can maintain two states: "transparent" and "opaque" in the absence of external influences. When the liquid crystals within the entire screen are in the "transparent" state, no handwriting information is displayed. However, when a stylus is written on the screen, the physical compression caused by the liquid crystals locally changes the state of the liquid crystals, revealing the handwriting. When a specific voltage signal is applied to the liquid crystal surface, the liquid crystals return to the "transparent" state, erasing the handwriting. LCD tablets rely on the intrinsic physical properties of liquid crystals for sensing and display, resulting in a simple structure and low power consumption. Furthermore, the handwriting on LCD tablets is composed not of pixels, but of individual liquid crystal molecules in an "opaque" state, making it easy to achieve ultra-high resolution. While LCD tablets offer significant advantages over the first category in terms of cost, power consumption, and resolution, they also have certain drawbacks. The first type of tablet uses separate sensing and display steps, relying more on program control. This makes partial erasure easy. However, LCD tablets, which rely on the physical properties of the material, use the entire tablet as a single unit and can refresh the entire page through an integrated bias voltage. However, compared to the first type of tablet, partial erasure is more difficult.

[0005] For a written handwriting tablet and stylus, changing the operation mode of the handwriting tablet includes: (1) setting the control mode of the handwriting tablet, changing the operation mode of the writing tablet through operations such as pressing and touching; (2) setting the control mode of the stylus, sending signals to the stylus through operations such as pressing and touching, and the stylus then sending signals to the handwriting tablet to change the operation mode of the handwriting tablet.

[0006] For method (1), it is necessary to operate the handwriting board and the stylus separately; for method (2), it is necessary to operate the stylus twice, that is, to control the handwriting board and to control the stylus separately.

[0007] However, the above operation method has the following problems:

[0008] (1) The operation steps are complicated and the operation efficiency is low;

[0009] (2) When a wireless communication module is provided in a stylus pen, it usually needs to be placed in combination with a control module (such as a single-chip microcomputer), resulting in the overall control system occupying a large space and high difficulty in arranging components.

[0010] Currently, no effective solutions have been proposed for the problems existing in related technologies, such as complicated operation steps, low operation efficiency, and difficulty in arranging components. Summary of the Invention

[0011] The purpose of the present invention is to address the deficiencies in the prior art and provide a synchronous transmission unit, a stylus, a handwriting system, a signal transmission method, a computer device, and a computer-readable storage medium to solve the problems existing in the related art, such as complicated operating steps, low operating efficiency, and difficulty in arranging components.

[0012] To achieve the above object, the technical solution adopted by the present invention is:

[0013] In a first aspect, a synchronous transmitting unit is provided, which is applied to a stylus pen and includes:

[0014] A wireless signal generating element, configured to transmit a wireless control signal, wherein the wireless control signal includes a global erase wireless control signal and a local erase wireless control signal;

[0015] An optical signal generating element, used for emitting an erasing optical signal;

[0016] A light guide element, disposed downstream of the wireless signal generating element and the optical signal generating element, for transmitting a global erasing wireless control signal to the optical erasing handwriting board and simultaneously transmitting a local erasing wireless control signal and an erasing optical signal to the optical erasing handwriting board;

[0017] The wireless control signal and the erasing light signal are transmitted synchronously.

[0018] In some embodiments, the wireless signal generating element and the optical signal generating element are integrated.

[0019] In some embodiments, the wireless signal generating element and the optical signal generating element are provided separately.

[0020] In some embodiments, the wavelength of the wireless control signal is different from the wavelength of the erasing optical signal.

[0021] In some embodiments, the frequency of the wireless control signal is different from the frequency of the erasing light signal.

[0022] In some embodiments, the duration of the wireless control signal is different from the frequency of the erasing light signal.

[0023] In some embodiments, a frequency of the global erasure wireless control signal is different from a frequency of the local erasure wireless control signal.

[0024] In some embodiments, a wavelength of the global erasure wireless control signal is different from a wavelength of the local erasure wireless control signal.

[0025] In some embodiments, a duration of the global erasure wireless control signal is different from a duration of the local erasure wireless control signal.

[0026] In some embodiments, the light guide element includes:

[0027] The transmission channel is used to transmit the global erasing wireless control signal to the light-erasing handwriting board, and simultaneously transmit the local erasing wireless control signal and the erasing optical signal to the light-erasing handwriting board.

[0028] In a second aspect, a stylus is provided, comprising:

[0029] a first control unit;

[0030] The synchronous transmitting unit according to the first aspect is connected to the first control unit and is configured to transmit and transfer a global erasing wireless control signal, a local erasing wireless control signal, and an erasing optical signal under the action of the first control unit;

[0031] A first power supply unit is connected to the first control unit and the synchronous transmitting unit respectively for supplying power.

[0032] In a third aspect, a handwriting system is provided, comprising:

[0033] The stylus according to the second aspect;

[0034] The optical erasing handwriting tablet is configured to switch to a global erasing mode upon receiving a global erasing wireless control signal transmitted by the stylus pen, and to switch to a local erasing mode upon receiving a local erasing wireless control signal transmitted by the stylus pen.

[0035] In a fourth aspect, a signal transmission method is provided, which is applied to the synchronous transmission unit as described in the first aspect, the stylus as described in the second aspect, or the handwriting system as described in the third aspect, comprising:

[0036] Get instruction information;

[0037] generating a global erasure wireless control signal or a local erasure wireless control signal in response to the instruction information;

[0038] In response to the local erasing wireless control signal, an erasing optical signal is generated.

[0039] In a fifth aspect, the present invention provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the signal transmission method as described in the fourth aspect when executing the computer program.

[0040] In a sixth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the signal transmission method as described in the fourth aspect.

[0041] The present invention provides a synchronous transmission unit, a stylus, a handwriting system, a signal transmission method, a computer device, and a computer-readable storage medium. The synchronous transmission unit integrates a wireless signal generating element and an optical signal generating element, and can synchronously transmit wireless control signals and optical signals at the same point, thereby realizing synchronous transmission. The synchronous transmission unit integrates a wireless signal generating element and an optical signal generating element, thereby reducing the difficulty of arranging the wireless signal generating element and the optical signal generating element in a small pen body, reducing device costs, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a framework diagram of a synchronous transmission unit according to an embodiment of the present invention;

[0043] Figure 2 is a framework diagram of a stylus according to an embodiment of the present invention;

[0044] Figure 3 is a framework diagram of a handwriting system according to an embodiment of the present invention;

[0045] Figure 4 is a framework diagram of a handwriting tablet according to an embodiment of the present invention;

[0046] Figure 5 is a schematic diagram of a signal transmission method according to an embodiment of the present invention;

[0047] Figure 6 is a framework diagram of a specific implementation of a stylus according to an embodiment of the present invention;

[0048] Figure 7 It is a framework diagram of a specific implementation of a synchronous transmission unit according to an embodiment of the present invention.

[0049] The reference numerals are: 100, stylus; 110, first control unit; 120, synchronous transmitting unit; 121, wireless signal generating element; 122, optical signal generating element; 123, light guiding element; 130, first power supply unit;

[0050] 200 , light-erasable handwriting tablet; 210 , second control unit; 220 , display unit; 230 , second power supply unit. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0052] Obviously, the drawings described below are merely examples or embodiments of the present application. Those skilled in the art can, without inventive effort, apply the present application to other similar scenarios based on these drawings. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, changes in design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in this application.

[0053] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments unless there is a conflict.

[0054] Unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the technical field to which this application belongs. The words "one", "a", "the" and the like used in this application do not indicate a limit on quantity and may indicate the singular or plural. The terms "include", "comprise", "have" and any variations thereof used in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units that are inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The word "multiple" used in this application means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0055] Example 1

[0056] This embodiment relates to the synchronous transmitting unit, the stylus pen, and the handwriting system of the present invention.

[0057] An exemplary embodiment of the present invention is as follows Figure 1 As shown, a synchronous transmission unit 120, applied to a stylus, includes a wireless signal generating element 121, an optical signal generating element 122, and a light guide element 123. The wireless signal generating element 121 is used to transmit wireless control signals, including a global erase wireless control signal and a local erase wireless control signal; the optical signal generating element 122 is used to transmit an erase optical signal; and the light guide element 123 is disposed downstream of the wireless signal generating element 121 and the optical signal generating element 122, and is used to transmit the global erase wireless control signal to the light-erasing handwriting board, and simultaneously transmit the local erase wireless control signal and the erase optical signal to the light-erasing handwriting board.

[0058] The wireless control signal and the erasing light signal are transmitted synchronously.

[0059] In the present invention, the stylus can form writing handwriting (writing traces) on the light-erasable handwriting board by pressure sensing, or by light signal sensing, or by a combination of pressure sensing and light signal sensing.

[0060] When the light-erasable handwriting tablet receives a global erase wireless control signal, the mode of the light-erasable handwriting tablet is switched to the global erase mode; when the light-erasable handwriting tablet receives a local erase wireless control signal, the mode of the light-erasable handwriting tablet is switched to the local erase mode.

[0061] When the light-erasable handwriting board is in global erasing mode, all writings (writing traces) are removed; when the light-erasable handwriting board is in local erasing mode, under the action of the erasing light signal emitted by the light signal generating element 122, the writings (writing traces) on the light-erasable handwriting board that are illuminated by the erasing light signal are erased, and the writings (writing traces) in other positions are retained.

[0062] The differences between the global erasing optical signal and the local erasing wireless control signal include:

[0063] 1) The frequency of the global erasure wireless control signal is different from the frequency of the local erasure wireless control signal.

[0064] 2) The wavelength of the global erasure wireless control signal is different from the wavelength of the local erasure wireless control signal.

[0065] 3) The duration of the global erasure wireless control signal is different from the duration of the local erasure wireless control signal.

[0066] The difference between the global erasure wireless control signal and the local erasure wireless control signal can be any one of the above three ways, or a combination of any two, or a combination of the above three, that is, at least one of the frequency, wavelength, and duration is different.

[0067] In some embodiments, the wireless control signal further comprises a written wireless control signal.

[0068] The differences between writing wireless control signals, global erasing wireless control signals, and local erasing wireless control signals include:

[0069] 1) The frequencies of the writing wireless control signal, the global erasing wireless control signal, and the local erasing wireless control signal are different.

[0070] 2) The wavelengths of the writing wireless control signal, the global erasing wireless control signal, and the local erasing wireless control signal are different.

[0071] 3) The duration of the writing wireless control signal, the duration of the global erasing wireless control signal, and the duration of the local erasing wireless control signal are different.

[0072] The difference between the writing wireless control signal, the global erasing wireless control signal, and the local erasing wireless control signal can be any one of the three aforementioned methods, a combination of any two, or a combination of the three, that is, at least one of the frequency, wavelength, and duration is different.

[0073] When the light-erasable handwriting tablet receives the writing wireless control signal, the mode of the light-erasable handwriting tablet is switched to the writing mode.

[0074] When the light-erasable handwriting tablet is in writing mode, the stylus pen can write on the light-erasable handwriting tablet to form handwriting (writing traces).

[0075] In the present invention, the wireless control signal may be an optical signal or a wireless signal, such as a radio wave, an electromagnetic wave, a Bluetooth signal, or the like.

[0076] In some embodiments, the wireless signal generating element 121 includes but is not limited to an infrared LED. Preferably, the wireless signal generating element 121 is an infrared LED.

[0077] In some embodiments, the wireless signal generating element 121 may also be a wireless signal generator.

[0078] In some embodiments, the optical signal generating element 122 is integrated with the wireless signal generating element 121. In this case, the optical signal generating element 122 and the wireless signal generating element 121 share an LED, which can distinguish the wireless control signal and the erase optical signal by emitting optical signals of different wavelengths and / or different frequencies and / or different times.

[0079] In some embodiments, the optical signal generating element 122 is provided separately from the wireless signal generating element 121. In this case, the optical signal generating element 122 and the wireless signal generating element 121 are provided in parallel.

[0080] The differences between the erasing optical signal and the wireless control signal include:

[0081] 1) The frequency of the erasing light signal is different from the frequency of the wireless control signal.

[0082] 2) The wavelength of the erasing optical signal is different from the wavelength of the wireless control signal.

[0083] 3) The duration of the erasing light signal is different from the duration of the wireless control signal.

[0084] The erasing optical signal and the wireless control signal may be distinguished by any one of the above three methods, or by a combination of any two, or by a combination of the above three, that is, by at least one of the frequency, wavelength, and duration being different.

[0085] In some embodiments, the optical signal generating element 122 is also used to emit a writing light signal.

[0086] The differences between writing light signals and erasing light signals include:

[0087] 1) The frequency of the writing light signal is different from the frequency of the erasing light signal.

[0088] 2) The wavelength of the writing light signal is different from the wavelength of the erasing light signal.

[0089] 3) The duration of the writing light signal is different from the duration of the erasing light signal.

[0090] The writing light signal and the erasing light signal may be distinguished by any one of the above three methods, or by a combination of any two or a combination of the above three methods, that is, by at least one of the frequency, wavelength, and duration being different.

[0091] Correspondingly, the differences between writing light signals and wireless control signals include:

[0092] 1) The frequency of the writing light signal is different from the frequency of the wireless control signal.

[0093] 2) The wavelength of the writing optical signal is different from the wavelength of the wireless control signal.

[0094] 3) The duration of the writing light signal is different from the duration of the wireless control signal.

[0095] The erasing optical signal and the wireless control signal may be distinguished by any one of the above three methods, or by a combination of any two, or by a combination of the above three, that is, by at least one of the frequency, wavelength, and duration being different.

[0096] In some embodiments, the writing light signal and the erasing light signal may be the same light signal. That is, when the light-erasable handwriting tablet is in writing mode, the light signal may write on the light-erasable handwriting tablet to form handwriting (writing traces); when the light-erasable handwriting tablet is in partial erasing mode, the handwriting (writing traces) illuminated by the light signal on the light-erasable handwriting tablet are erased, while the handwriting (writing traces) in other locations on the light-erasable handwriting tablet remain.

[0097] In some embodiments, when the writing light signal and the erasing light signal are the same light signal, the writing light signal and the erasing light signal have the same wavelength, frequency, and duration.

[0098] In some embodiments, the optical signal generating element 122 includes but is not limited to an LED.

[0099] When the optical signal generating element 122 and the wireless signal generating element 121 are provided separately, the wavelength of the optical signal generating element 122 is different from the wavelength of the wireless signal generating element 121 .

[0100] When the optical signal generating element 122 and the wireless signal generating element 121 are integrated, the global erasure wireless control signal is different from the local erasure wireless control signal (at least one of the wavelength, frequency, and duration is different); the local erasure wireless control signal and the erasure optical signal can be the same or different (if different, at least one of the wavelength, frequency, and duration is different).

[0101] In addition, when the wireless signal generating element 121 generates a writing wireless control signal and the optical signal generating element 122 emits a writing optical signal, the writing wireless control signal and the writing optical signal can be the same or different (if different, at least one of the wavelength, frequency, and duration is different).

[0102] In the case where the optical signal generating element 122 and the wireless signal generating element 121 are integrated, the local erasing wireless control signal and the erasing optical signal may be the same optical signal.

[0103] In some embodiments, the cross-section of the light guide element 123 is circular.

[0104] In some embodiments, the light guide element 123 includes a transmission channel, wherein the transmission channel is used to transmit a global erasing wireless control signal to the light-erasing handwriting board, and simultaneously transmit a local erasing wireless control signal and an erasing optical signal to the light-erasing handwriting board.

[0105] In some of the embodiments, the transmission channel is also used to transmit the writing wireless control signal and the writing light signal to the light-erasable handwriting tablet.

[0106] In some embodiments, there is one transmission channel that can simultaneously transmit the wireless control signal and the erasing light signal (and the writing light signal), and the wireless control signal and the erasing light signal (and the writing light signal) do not interfere with each other.

[0107] In some embodiments, there are two transmission channels, one for transmitting wireless control signals and the other for transmitting erasing optical signals (writing optical signals), and the two transmission channels do not interfere with each other.

[0108] In some embodiments, the light guide element 123 is made of a transparent material.

[0109] In some embodiments, the light guide element 123 includes but is not limited to a light guide rod.

[0110] like Figure 2 As shown, the stylus 100 includes a first control unit 110, the synchronous transmitting unit 120 described above, and a first power supply unit 130. The synchronous transmitting unit 120 is connected to the first control unit 110 and is configured to transmit and transfer a global erase wireless control signal, a local erase wireless control signal, and an erase optical signal under the control of the first control unit 110. The first power supply unit 130 is connected to the first control unit 110 and the synchronous transmitting unit 120, respectively, for supplying power.

[0111] In addition, the synchronous transmitting unit 120 is also used to transmit and transmit the writing wireless control signal and the writing light signal under the action of the first control unit 110.

[0112] In some embodiments, the first control unit 110 includes at least an information receiving module and a control module. The information receiving module may be a mechanical structure (such as a button) or a wireless communication structure; and the control module includes but is not limited to a single chip microcomputer.

[0113] In some embodiments, the first power supply unit 130 includes but is not limited to a lithium battery, a button battery, etc. The first power supply unit 130 can be charged in a charging manner or in a battery replacement manner.

[0114] like Figure 3 As shown, the handwriting system includes the stylus 100 and the light-erasing handwriting tablet 200 as described above. The light-erasing handwriting tablet 200 is configured to switch to a global erase mode upon receiving a global erase wireless control signal transmitted by the stylus 100, and to switch to a local erase mode upon receiving a local erase wireless control signal transmitted by the stylus 100.

[0115] In addition, the light-erasable handwriting tablet 200 is further configured to switch to a writing mode upon receiving a writing wireless control signal transmitted by the stylus pen 100 .

[0116] like Figure 4As shown, the optical erasable writing tablet 200 includes a second control unit 210, a display unit 220, and a second power supply unit 230. The second control unit 210 is in communication with the stylus 100 and is configured to receive wireless control signals transmitted by the wireless signal generating element 121 of the synchronous transmitting unit 120. The display unit 220 is connected to the second control unit 210 and is configured to change the display mode under the control of the second control unit 820 and to receive optical signals transmitted by the optical signal generating element 122 of the synchronous transmitting unit 120. The second power supply unit 230 is connected to the second control unit 210 and the display unit 220, respectively, for supplying power.

[0117] Specifically, the second control unit 210 is wirelessly connected to the wireless signal generating element 121 of the synchronous transmitting unit 120 .

[0118] In the present invention, the light-erasable handwriting board 200 can refer to CN116819842B (UV-erasable screen and preparation method, UV-erasable system and method), CN117539086B (light-controlled color-changing structure, device, system and method), CN117111350B (light-controlled screen, light-controlled system and light-controlled method), etc.

[0119] The technical effects of the present invention are as follows:

[0120] 1) The synchronous transmission unit integrates wireless signal generating elements and optical signal generating elements, which can transmit wireless control signals and optical signals synchronously at the same point, realizing synchronous transmission;

[0121] 2) The synchronous transmitting unit is used to integrate the wireless signal generating element and the optical signal generating element, which reduces the difficulty of arranging the wireless signal generating element and the optical signal generating element in the small pen body, reduces the device cost, and improves the user experience.

[0122] Example 2

[0123] This embodiment relates to the signal transmission method of the present invention.

[0124] Figure 5 FIG is a schematic diagram of a signal transmission method according to an embodiment of the present invention. Figure 5 As shown, the signal transmission method is applied to the synchronous transmission unit 120 or the stylus 100 or the handwriting system as described in Example 1, including:

[0125] Step S502: Obtain instruction information;

[0126] Step S504: generating a global erase wireless control signal or a local erase wireless control signal in response to the instruction information;

[0127] Step S506 : generating an erasing optical signal in response to the local erasing wireless control signal.

[0128] In step S502, the instruction information is the instruction information sent by the user to the stylus. Specifically, the user can send the instruction information to the stylus through mechanical operation (such as pressing a button, touching a specific area, etc.), or the user can send the instruction information to the stylus through voice.

[0129] In step S504, the method further includes:

[0130] In response to the instruction information, a writing wireless control signal is generated.

[0131] In some embodiments, step S506 is performed simultaneously with step S504.

[0132] Furthermore, the signal transmission method further includes:

[0133] Step S508: Generate a writing light signal in response to the writing wireless control signal.

[0134] In some embodiments, step S508 is performed simultaneously with step S504.

[0135] Steps S504 to S508 include the following three methods:

[0136] 1) generating a global erase wireless control signal in response to the instruction information;

[0137] 2) generating a local erasing wireless control signal and an erasing optical signal in response to the instruction information;

[0138] 3) In response to the instruction information, a writing wireless control signal and a writing light signal are generated.

[0139] Furthermore, in the case where the wireless signal generating element 121 and the optical signal generating element 122 are integrated, generating the local erasure wireless control signal and the erasure optical signal includes:

[0140] In response to the instruction information, first parameter information of the local erasure wireless control signal and second parameter information of the erasure optical signal are acquired, wherein the first parameter information includes a first wavelength, a first frequency, and a first duration, and the second parameter information includes a second wavelength, a second frequency, and a second duration;

[0141] Determining whether the first parameter information and the second parameter information are different;

[0142] When the first parameter information and the second parameter information are different, firstly generating and transmitting a local erasing wireless control signal, and then generating and transmitting an erasing optical signal;

[0143] When the first parameter information and the second parameter information are the same, the local erasure wireless control signal and the erasure optical signal are generated and transmitted simultaneously.

[0144] The difference between the first parameter information and the second parameter information refers to at least one indicator being different.

[0145] “First generate and transmit a local erasing wireless control signal, and then generate and transmit an erasing optical signal” means transmitting a local erasing wireless control signal and then transmitting an erasing optical signal after a preset time interval.

[0146] Through the above steps, the synchronous generation and transmission of the wireless control signal and the optical signal can be achieved using a single instruction information, without the need for multiple operations, thus reducing the number of operation steps and improving the operation efficiency.

[0147] In addition, the signal transmission method of the embodiment of the present application can be implemented by a computer device. The components of the computer device may include but are not limited to a processor and a memory storing computer program instructions, or a single chip microcomputer, a logic circuit, etc.

[0148] In some embodiments, the processor may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0149] In some embodiments, the memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a solid state drive (SSD), a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory may include removable or non-removable (or fixed) media. Where appropriate, the memory may be inside or outside the data processing device. In a specific embodiment, the memory is a non-volatile memory. In a specific embodiment, the memory includes a read-only memory (ROM) and a random access memory (RAM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically alterable ROM (EAROM) or a flash memory (FLASH), or a combination of two or more of these. Under appropriate circumstances, the RAM can be a static random access memory (SRAM) or a dynamic random access memory (DRAM), where the DRAM can be a fast page mode dynamic random access memory (FPMDRAM), an extended data output dynamic random access memory (EDODRAM), a synchronous dynamic random access memory (SDRAM), etc.

[0150] The memory may be used to store or cache various data files required for processing and / or communication, as well as possible computer program instructions executed by the processor.

[0151] The processor implements any one of the signal transmission methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0152] In some embodiments, the computer device may further include a communication interface and a bus, wherein the processor, the memory, and the communication interface are connected via the bus and communicate with each other.

[0153] The communication interface is used to enable communication between the various units, devices, units, and / or devices in the embodiments of the present application. The communication interface can also enable data communication with other components such as external devices, image / data acquisition equipment, databases, external storage, and image / data processing workstations.

[0154] A bus, which includes hardware, software, or both, couples components of a computer device to each other. It includes, but is not limited to, at least one of the following: a data bus, an address bus, a control bus, an expansion bus, and a local bus. By way of example and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses, or a combination of two or more of the above. Where appropriate, a bus may include one or more buses. Although embodiments herein describe and illustrate a particular bus, this application contemplates any suitable bus or interconnect.

[0155] The computer device can execute the signal transmission method in the embodiment of the present application.

[0156] In addition, in conjunction with the signal transmission method in the above embodiments, the present application can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the signal transmission methods in the above embodiments is implemented.

[0157] Example 3

[0158] This embodiment relates to a specific implementation of the present invention.

[0159] A specific embodiment of the present invention, as Figure 6 As shown, a stylus pen for synchronously transmitting wireless control signals and erasing light for a light-erasable writing tablet comprises a control system 1A, a power supply system 1B, and a synchronous transmission system 1C. Control system 1A draws power from power supply system 1B. Control system 1A receives user control information, processes it, and then sends a signal to control synchronous transmission system 1C. Upon receiving the signal from control system 1A, synchronous transmission system 1C emits a wireless signal from its wireless transmission element, and an erasing light signal from its erasing light transmission element. The wireless signal and erasing light signal are synchronously transmitted to the outside world via a light guide element, further enabling control and erasing of the light-erasable writing tablet.

[0160] The control system 1A includes an information receiving module and a control module. The working mode is as follows: the information received by the information receiving module is transmitted to the control module, and further transmitted by the control module to the synchronous transmission system 1C.

[0161] The information receiving module is preferably a mechanical button, and other wireless communication methods can also be implemented.

[0162] The control module may be an 8051 series single-chip microcomputer or other commonly used single-chip microcomputers.

[0163] The power supply system 1B is preferably powered by a lithium battery or a plurality of button batteries, or any other power supply component. Preferably, the power supply system 1B can charge the entire stylus through a charging method such as typec or a wireless charging module.

[0164] Among them, such as Figure 7 As shown, the synchronous transmission system 1C includes a wireless signal generator 2A, an erasing light generator 2B and a light guiding element 2C.

[0165] The wireless signal generator 2A is preferably an infrared LED, but other wireless signal generators are also acceptable.

[0166] The erasing light generator 2B is preferably an LED of a corresponding wavelength, but other light sources of corresponding wavelength bands are also acceptable.

[0167] The wireless signal generator 2A and the erasing light generator 2B can be integrated into a light-emitting element, or can be separate elements, as long as the signals of the two can be synchronously transmitted into the light-guiding element 2C without causing interference.

[0168] The light-guiding element 2C is preferably a columnar body capable of transmitting wireless signals and erasing optical signals, but other shapes are also acceptable.

[0169] The method of using this embodiment is as follows:

[0170] When the user uses the stylus, a signal is transmitted to the control system 1A by pressing a button or the like;

[0171] After receiving the signal, the control system 1A draws power from the power supply system 1B and transmits the signal to the synchronous transmission system 1C;

[0172] When the user instruction is global erase, the synchronous transmission system 1C controls the wireless signal generator 2A to generate a global erase signal, which is transmitted to the outside world via the light guide element 2C and received by the light-erasable handwriting tablet, thus achieving global erase;

[0173] When the user instruction is partial erasure, the synchronous transmission system 1C controls the wireless signal generator 2A to generate a partial erasure signal, and the erasing light generator 2B to generate a partial erasure light signal. The two signals are transmitted to the outside world through the light-guiding element 2C, controlling the light-erasing handwriting board to be in a partial erasure state and further realizing partial erasure under the action of the partial erasure light signal.

[0174] The technical effects of the present invention are as follows:

[0175] 1) Wireless signal transmission and erase optical signal transmission use the same channel, which reduces the difficulty of arranging multiple components in the stylus;

[0176] 2) It realizes the synchronous transmission of wireless control signals and optical erasing signals, reduces the difficulty of arranging the wireless signal generator and the erasing light generator in the small pen body, reduces the device cost, and improves the user experience.

[0177] The above description is only a preferred embodiment of the present invention and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous transmitting unit, applied to a stylus, characterized in that: include: A wireless signal generating element, configured to transmit a wireless control signal, wherein the wireless control signal includes a global erase wireless control signal and a local erase wireless control signal; An optical signal generating element, used for emitting an erasing optical signal; A light guide element, disposed downstream of the wireless signal generating element and the optical signal generating element, for transmitting a global erasing wireless control signal to the optical erasing handwriting board and simultaneously transmitting a local erasing wireless control signal and an erasing optical signal to the optical erasing handwriting board; The wireless control signal and the erasing light signal are transmitted synchronously.

2. The synchronous transmission unit according to claim 1, characterized in that The wireless signal generating element and the optical signal generating element are integrated; or The wireless signal generating element and the optical signal generating element are provided separately.

3. The synchronous transmission unit according to claim 1, characterized in that The wavelength of the wireless control signal is different from the wavelength of the erasing optical signal; and / or The frequency of the wireless control signal is different from the frequency of the erasing light signal; and / or The duration of the wireless control signal is different from the frequency of the erasing light signal.

4. The synchronous transmission unit according to claim 1, characterized in that The frequency of the global erasure wireless control signal is different from the frequency of the local erasure wireless control signal; and / or The wavelength of the global erasure wireless control signal is different from the wavelength of the local erasure wireless control signal; and / or The duration of the global erasure wireless control signal is different from the duration of the local erasure wireless control signal.

5. The synchronous transmission unit according to any one of claims 1 to 4, characterized in that: The light guide element comprises: The transmission channel is used to transmit the global erasing wireless control signal to the light-erasing handwriting board, and simultaneously transmit the local erasing wireless control signal and the erasing optical signal to the light-erasing handwriting board.

6. A stylus pen, characterized in that: include: a first control unit; The synchronous transmitting unit according to any one of claims 1 to 5, wherein the synchronous transmitting unit is connected to the first control unit and is configured to transmit and transfer a global erasure wireless control signal, a local erasure wireless control signal, and an erasure optical signal under the action of the first control unit; A first power supply unit is connected to the first control unit and the synchronous transmitting unit respectively, and is used for supplying power.

7. A handwriting system, characterized in that: include: The stylus pen according to claim 6; The optical erasing handwriting tablet is configured to switch to a global erasing mode upon receiving a global erasing wireless control signal transmitted by the stylus pen, and to switch to a local erasing mode upon receiving a local erasing wireless control signal transmitted by the stylus pen.

8. A signal transmission method, applied to the synchronous transmission unit according to any one of claims 1 to 5, or the stylus according to claim 4, or the handwriting system according to claim 5, characterized in that: include: Get instruction information; generating a global erasure wireless control signal or a local erasure wireless control signal in response to the instruction information; In response to the local erasing wireless control signal, an erasing optical signal is generated.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the signal transmission method according to claim 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the signal transmission method according to claim 8 is implemented.

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