CN112654958A

CN112654958A - Handwriting induction system and handwriting input control device and method thereof

Info

Publication number: CN112654958A
Application number: CN201880094135.5A
Authority: CN
Inventors: 杨必华; 刘兴慧
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2021-04-13
Also published as: WO2020042145A1

Abstract

The application provides a handwriting induction system (100) and a handwriting input control device (40) and a method thereof, wherein the handwriting induction system (100) further comprises a handwriting pen (20) and a handwriting board (30), and the handwriting input control device (40) comprises an azimuth angle detection module (41), an inclination angle detection module (42) and an adjusting module (43). The azimuth angle detection module (41) is used for detecting the azimuth angle of the writing pen (20) relative to the writing board (30) in the writing process. The inclination angle detection module (42) is used for detecting an inclination angle of the handwriting pen (20) relative to the handwriting board (30) in the writing process. The adjusting module (43) is used for adjusting the handwriting of the stylus (20) according to at least one of the orientation included angle and the inclination included angle.

Description

Handwriting induction system and handwriting input control device and method thereof

Technical Field

The present application relates to the field of handwriting input control technologies, and in particular, to a handwriting sensing system, and a handwriting input control apparatus and method thereof.

Background

In a handwriting induction system with a handwriting pen and a handwriting board, a user can perform relatively fine handwriting input operation on the handwriting board through the handwriting pen. In practical application, how to present a more real writing handwriting for a user makes the writing effect of the stylus closer to a real stylus, so as to bring a more real use experience for the user, which has become a main research direction of research and development personnel.

Disclosure of Invention

In view of this, the application provides a handwriting sensing system and a handwriting input control device and method thereof, which can implement detection of writing gestures with simple structure and algorithm, and implement handwriting restoration when a handwriting pen writes according to the detected writing gestures, so as to bring more real use experience to users.

In a first aspect, the present application provides a handwriting input control device, which is applied to a handwriting sensing system, where the handwriting sensing system includes a handwriting pen and a handwriting board. The handwriting input control device includes:

the azimuth angle detection module is used for detecting an azimuth angle of the handwriting pen relative to the handwriting board in the writing process;

the inclination angle detection module is used for detecting an inclination angle of the handwriting pen relative to the handwriting board in the writing process; and

and the adjusting module is used for adjusting the handwriting of the handwriting pen according to at least one of the azimuth included angle and the inclination included angle.

In a second aspect, the present application provides a handwriting input control method, including:

detecting the position included angle of the handwriting pen relative to the handwriting board in the writing process;

detecting an inclined included angle of the handwriting pen relative to the handwriting board in the writing process; and

and adjusting the handwriting of the handwriting pen according to at least one of the orientation included angle and the inclination included angle.

In a third aspect, the present application provides a handwriting sensing system, comprising a handwriting pen, a handwriting pad, and the handwriting input control device.

The handwriting input control device provided by the embodiment of the application adopts a simple structure and algorithm to realize the detection of the writing gesture, and realizes the handwriting restoration of the handwriting pen when writing on the handwriting board according to the detected writing gesture, namely, the writing gesture is adjusted, so that the writing effect of the handwriting pen is closer to the writing effect of a real handwriting pen, and the more real use experience can be brought to a user.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a handwriting sensing system according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a handwriting input control device according to an embodiment of the present application.

FIG. 3 is a schematic diagram of the orientation angle and the tilt angle of the stylus pen formed with the corresponding reference surface in the three-dimensional space of the terrestrial coordinate system.

Fig. 4 is a schematic view of the azimuth angle shown in fig. 3 in the XY plane.

Fig. 5 is a schematic diagram of the tilt angle shown in fig. 3 in a two-dimensional plane.

Fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present application.

Fig. 7 is a schematic projection diagram of the preset directions of the stylus and the writing pad on a horizontal plane respectively.

Fig. 8 is a schematic structural diagram of a tilt angle detection element according to an embodiment of the present application.

Fig. 9 is a schematic view of pressures sensed by the pressure sensors of the tilt angle detection element shown in fig. 8 when the stylus pen is in a vertical state.

Fig. 10 is a schematic view of pressures sensed by the pressure sensor of the tilt angle detection element shown in fig. 8 when the stylus pen is in a tilted state.

FIG. 11 is a schematic diagram of a writing script presented on the tablet of FIG. 1.

FIG. 12 is a schematic illustration of another writing script presented on the tablet of FIG. 1.

Fig. 13 is a flowchart illustrating a handwriting input control method according to an embodiment of the present application.

Fig. 14 is a sub-flowchart of a handwriting input control method according to an embodiment of the present application.

Fig. 15 is a schematic sub-flow chart of a handwriting input control method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Please refer to fig. 1, which is a schematic diagram of a handwriting sensing system 100 according to an embodiment of the present application. In the embodiment of the present application, the handwriting sensing system 100 at least includes a pen 20, a tablet 30 and a handwriting input control device 40. The handwriting pen 20 is used in cooperation with the handwriting board 30, and the working principle of the handwriting board 30 and the handwriting pen 20 can refer to the related art, and since this part is not the focus of the invention of the present application, detailed description is not provided here. In this embodiment, the stylus 20 is a capacitive pencil.

In the present embodiment, referring to fig. 2, the handwriting input control device 40 includes an azimuth angle detection module 41, an inclination angle detection module 42, and an adjustment module 43. The azimuth angle detecting module 41 is configured to detect an azimuth angle of the stylus pen 20 relative to the writing pad 30 during writing, the inclination angle detecting module 42 is configured to detect an inclination angle of the stylus pen 20 relative to the writing pad 30 during writing, and the adjusting module 43 is configured to adjust the writing trace of the stylus pen 20 according to at least one of the azimuth angle and the inclination angle.

Before describing the detection scheme of the orientation angle and the tilt angle of the stylus 20 with respect to the tablet 30, the definitions of the orientation angle and the tilt angle will be described with reference to fig. 3-5.

Taking the stylus pen P as an example, fig. 3-5 show the relative position relationship between the stylus pen P and the corresponding reference surface in the terrestrial coordinate system, for explaining the "azimuth angle" and the "inclination angle". The "azimuth angle" referred to herein is the angle of the stylus P facing the reference plane. The inclination angle refers to an included angle between the stylus pen P and a horizontal plane XY. Fig. 3 is a schematic diagram of an azimuth angle and an inclination angle formed by the stylus pen P and a corresponding reference plane in a three-dimensional space of a terrestrial coordinate system, fig. 4 is a schematic diagram of the azimuth angle shown in fig. 3 in a horizontal plane XY, and fig. 5 is a schematic diagram of the inclination angle shown in fig. 3 in a two-dimensional reference plane. As shown in fig. 3 and 4, when the stylus pen P is inclined with respect to the horizontal plane XY, an included angle between a projection P' of the stylus pen P on the horizontal plane XY and the X-axis is an azimuth angle of the stylus pen P, and is denoted as β; as shown in fig. 3 and 5, an included angle between the stylus pen P and the horizontal plane XY is an inclination angle of the stylus pen P, which is represented as θ.

The detection scheme of the orientation angle of stylus 20 relative to tablet 30 of the present application will be described in detail with reference to fig. 1-2 and 7.

In the present embodiment, as shown in fig. 2, the azimuth angle detecting module 41 includes an azimuth angle detecting component 411 and a first calculating unit 412. The azimuth detection component 411 is configured to detect azimuth data of the stylus pen 20 and the tablet 30 during writing, where the azimuth data of the tablet 30 is azimuth data reflecting a preset direction of the tablet 30.

In this embodiment, the first calculating unit 412 is configured to obtain the azimuth data of the stylus pen 20 and the tablet 30 detected by the azimuth detecting component 411, calculate the azimuth angles of the stylus pen 20 and the tablet 30 in the preset directions according to the azimuth data of the stylus pen 20 and the tablet 30, respectively, calculate the difference between the azimuth angle of the stylus pen 20 and the azimuth angle of the tablet 30 in the preset direction according to the calculated azimuth angles, and determine the absolute value of the difference as the azimuth angle of the stylus pen 20 relative to the preset direction of the tablet 30. That is, the orientation angle refers to the angle between the stylus 20 and the tablet 30 in the orientation dimension.

Specifically, in this embodiment, as shown in fig. 1, the azimuth detecting component 411 includes a first azimuth detecting element 4111 and a second azimuth detecting element 4112, wherein the first azimuth detecting element 4111 is disposed on the stylus 20 for detecting azimuth data of the stylus 20 during writing. The second azimuth detecting element 4112 is disposed on the tablet 30, and is used for detecting azimuth data of the tablet 30 during writing.

The preset direction of the writing pad 30 may be a length direction or a width direction of the writing pad 30, or may be a writing direction of the writing pad 30, such as a horizontal direction or a vertical direction. That is, the preset direction of the writing pad 30 may not be unique, and may be switched according to the actual writing requirement of the user. Accordingly, the azimuth indicated by the azimuth data of the tablet 30 may be identical to the azimuth of the preset direction of the tablet 30 or different by 90 degrees. For example, when the writing direction of the writing pad 30 is a horizontal direction, the azimuth indicated by the azimuth data of the writing pad 30 may be consistent with the azimuth of the horizontal direction of the writing pad 30; when the writing direction of the tablet 30 is switched to the portrait orientation, the orientation indicated by the azimuth data of the tablet 30 is different from the orientation in which the portrait orientation of the tablet 30 is located by 90 degrees.

In one embodiment, the first computing unit 412 may be a stand-alone electronic device and may be disposed in the tablet 30. Alternatively, in another embodiment, as shown in fig. 1 and 6, the handwriting input control apparatus 40 may further include a controller 44 disposed in the handwriting pad 30, and the first calculating unit 412 may also be a part of the controller 44. It is understood that the handwriting pen 20 and the handwriting board 30 are respectively provided with a wireless communication module (not shown), and the data detected by the first azimuth detecting element 4111 may be sent to the wireless communication module on the handwriting board 30 through the wireless communication module on the handwriting pen 20, and then sent to the first computing unit 412 or the controller 44 through the wireless communication module on the handwriting board 30. The second azimuth angle detecting element 4112 may be electrically connected to the first computing unit 412 or the controller 44, and directly transmit the detected data to the first computing unit 412 or the controller 44. Since this section is not the focus of the invention of the present application, it will not be described in detail here.

As shown in fig. 7, the schematic projection diagrams of the preset directions of the stylus pen 20 and the tablet 30 on the horizontal plane are shown, where the direction a indicates the projection of the stylus pen 20 on the horizontal plane, and the included angle β 1 between the direction a and the X-axis represents the azimuth angle of the stylus pen 20, and the direction B indicates the projection of the preset direction of the tablet 30 on the horizontal plane, and the included angle β 2 between the direction B and the X-axis represents the azimuth angle of the preset direction of the tablet 30.

It is understood that when the azimuth angle of the stylus pen 20 and the azimuth angle of the predetermined direction of the tablet 30 calculated by the first calculating unit 412 are different, that is, the value of the azimuth angle is not zero, it can be determined that the direction in which the stylus pen 20 is facing is different from the direction in which the tablet 30 is predetermined.

For example, as shown in fig. 7, if β 1 ≠ β 2, it can be determined that the direction in which the stylus pen 20 is pointed during writing is different from the direction in which the handwriting board 30 is preset; on the contrary, it can be determined that the orientation of the writing pen 20 during writing is the same as the orientation of the predetermined direction of the writing pad 30.

In this embodiment, the first azimuth detecting element 4111 and the second azimuth detecting element 4112 may employ geomagnetic sensors, and the azimuth data detected by the first azimuth detecting element 4111 and the second azimuth detecting element 4112 indicates the location of the geographic direction.

The detection scheme of the tilt angle of stylus 20 relative to tablet 30 of the present application will be described in detail below with reference to fig. 1-2 and 8-10.

In the present embodiment, as shown in fig. 2, the tilt angle detection module 42 includes a tilt angle detection component 421 and a second calculation unit 422. The tilt angle detecting component 421 is configured to detect tilt angle data of the stylus pen 20 and the tablet 30 during writing.

In this embodiment, the second calculating unit 422 is configured to obtain the tilt angle data of the stylus pen 20 and the writing board 30 detected by the tilt angle detecting component 421, respectively calculate the tilt angles of the stylus pen 20 and the writing board 30 according to the tilt angle data of the stylus pen 20 and the writing board 30, calculate a difference between the tilt angle of the stylus pen 20 and the tilt angle of the writing board 30 according to the calculated tilt angles, and determine an absolute value of the difference as the tilt angle of the stylus pen 20 relative to the writing board 30. That is, the tilt angle refers to the actual angle between the stylus 20 and the tablet 30 in the height dimension.

Specifically, in this embodiment, as shown in fig. 1, the tilt angle detection assembly 421 includes a first tilt angle detection element 4211 and a second tilt angle detection element 4212, and the first tilt angle detection element 4211 is disposed on the stylus pen 20 and is used for detecting tilt angle data of the stylus pen 20 during writing. The second tilt angle detection element 4212 is disposed on the writing pad 30 and is used for detecting tilt angle data of the writing pad 30 during writing.

In one embodiment, the second computing unit 422 may be a stand-alone electronic device and may be disposed in the tablet 30. In another embodiment, as shown in fig. 6, the second calculation unit 422 may also be a part of the controller 44. It is understood that the data detected by the first tilt angle detecting element 4211 may be sent to the wireless communication module on the tablet 30 through the wireless communication module on the stylus pen 20, and then transmitted to the second computing unit 422 or the controller 44 through the wireless communication module on the tablet 30. The second tilt angle detection element 4212 may be electrically connected to the second calculation unit 422 or the controller 44, and directly transmit the detected data to the second calculation unit 422 or the controller 44. Since this section is not the focus of the invention of the present application, it will not be described in detail here.

In the present embodiment, as shown in fig. 8, each of the first inclination angle detection element 4211 and the second inclination angle detection element 4212 includes a pressure sensor 4231 and a metal ball 4232 provided on a force receiving surface of the pressure sensor 4231, and the inclination angle data is pressure data sensed by the corresponding pressure sensor 4231.

The second calculation unit 422 determines the tilt angle of the stylus pen 20 according to pressure data sensed by the pressure sensor 4231 of the first tilt angle detection element 4211 and a first preset pressure value, where the first preset pressure value is the gravity of the corresponding metal ball 4232 sensed by the pressure sensor 4231 of the first tilt angle detection element 4211 when the stylus pen 20 is in the vertical state.

The second calculating unit 422 further determines the tilt angle of the handwriting board 30 according to the pressure data sensed by the pressure sensor 4231 of the second tilt angle detection element 4212 and a second preset pressure value, where the second preset pressure value is the gravity of the corresponding metal ball 4232 sensed by the pressure sensor 4231 of the second tilt angle detection element 4212 when the handwriting board 30 is in the vertical state.

Taking the first tilt angle detection element 4211 provided on the stylus pen 20 as an example, assuming that the gravity of the metal ball 4232 is m × g, as shown in fig. 9, when the stylus pen 20 is in the vertical state, the pressure F1 sensed by the pressure sensor 4231 is equal to the gravity m × g of the metal ball 4232, that is, F1 ═ m × g. As shown in fig. 10, when the stylus 20 is in an inclined state and the angle between the stylus 20 and the horizontal plane 50 is θ, the pressure F2 sensed by the pressure sensor 4231 is: f2 ═ m × g × sin θ. Thus, the tilt angle θ of stylus 20 may be calculated as: θ is arcsin (F2/F1). Since the detection scheme of the tilt angle of the tablet 30 is similar to the detection scheme of the stylus pen 20, the detailed description is omitted.

The present application will now be described in detail with reference to fig. 11-12, wherein the adjustment scheme of the handwriting of stylus 20 according to the above-mentioned orientation angle and/or tilt angle is described.

In an embodiment, the adjusting module 43 is configured to determine, according to a first preset corresponding relationship between an orientation included angle and a handwriting width, a handwriting width corresponding to the calculated orientation included angle, and display the handwriting of the stylus pen 20 with the determined handwriting width, so that the thickness of the handwriting can be adjusted through the writing posture.

The adjusting module 43 is further configured to display the handwriting of the stylus pen 20 with a preset standard width when the calculated value of the orientation included angle is zero, that is, the orientation of the stylus pen 20 is the same as the orientation of the handwriting pad 30 in the preset direction; and displaying the handwriting of the handwriting pen 20 with other preset widths when the calculated value of the orientation angle is not zero, that is, when the orientation of the handwriting pen 20 is different from the orientation of the preset direction of the writing pad 30.

For example, as shown in fig. 11, assuming that a writing script T1 is the handwriting inputted by the stylus 20 in the writing pad 30 when the orientation of the stylus 20 is the same as the orientation of the preset direction of the writing pad 30; the writing handwriting T2 is a handwriting input by the stylus 20 in the writing pad 30 when the orientation of the stylus 20 is different from the preset direction of the writing pad 30 and the orientation included angle of the stylus 20 relative to the writing pad 30 is β 1; the handwriting T3 is the direction in which the orientation of the stylus 20 is different from the preset direction of the writing pad 30, and when the orientation included angle of the stylus 20 with respect to the writing pad 30 is β 2, the handwriting of the stylus 20 is input into the writing pad 30, where β 1 is greater than 0 and less than β 2 and is less than or equal to 90 °.

That is to say, the preset standard width is smaller than other preset widths, when the orientation of the writing pen 20 is the same as the orientation of the writing pad 30 in the preset direction, the handwriting width of the writing trace is the narrowest, and when the orientation of the writing pen 20 is different from the orientation of the writing pad 30 in the preset direction, the handwriting width of the writing trace and the orientation included angle are in a direct proportion relationship, that is, the larger the orientation included angle is, the wider the handwriting width of the writing trace is.

Optionally, in some embodiments, the adjusting module 43 is further configured to gradually fade the color of the handwriting along the first direction when the orientation angle of the stylus 20 is greater than the orientation angle of the preset direction of the handwriting board 30, that is, the difference between the orientation angle of the stylus 20 and the orientation angle of the preset direction of the handwriting board 30 is greater than zero, and gradually fade the color of the handwriting along the second direction when the orientation angle of the stylus 20 is less than the orientation angle of the preset direction of the handwriting board 30, that is, the difference between the orientation angle of the stylus 20 and the orientation angle of the preset direction of the handwriting board 30 is less than zero. The first direction and the second direction are two opposite directions. Therefore, the relation between the handwriting and the holding direction and the writing force of the handwriting pen during real writing can be embodied, and the use experience of a user can be provided.

For example, as shown in fig. 12, if the handwriting T4 is the handwriting input by the stylus 20 in the tablet 30 when the orientation angle of the stylus 20 is larger than the orientation angle of the preset direction of the tablet 30, the color of the handwriting T4 gradually fades along the first direction D1. At this time, the holding direction of the pen 20 with respect to the tablet 30 is the first direction D1. When the orientation angle of the handwriting pen 20 is smaller than the orientation angle of the preset direction of the writing pad 30, the writing handwriting T5 is input by the handwriting pen 20 in the writing pad 30, and the color of the writing handwriting T5 gradually fades along the second direction D2. At this time, the holding direction of the pen 20 with respect to the tablet 30 is the second direction D2.

Optionally, in another embodiment, the adjusting module 43 is configured to determine, according to a second preset corresponding relationship between the inclination included angle and the handwriting width, a handwriting width corresponding to the calculated inclination included angle, and display the writing handwriting of the stylus pen 20 with the determined handwriting width, so that the thickness of the writing handwriting can be adjusted through the writing posture.

The adjusting module 43 is further configured to display the handwriting of the handwriting pen 20 with a preset standard width when the calculated value of the inclined included angle is 90 degrees, that is, the handwriting pen 20 is perpendicular to the handwriting board 30; and when the calculated value of the inclination included angle is not 90 degrees, namely when the handwriting pen 20 is inclined relative to the handwriting board 30, displaying the handwriting of the handwriting pen 20 with other preset widths.

For example, also taking fig. 11 as an example, suppose that the handwriting T1 is the handwriting input by the stylus 20 in the writing pad 30 when the stylus 20 is perpendicular to the writing pad 30; the writing handwriting T2 is the handwriting input by the stylus 20 in the writing pad 30 when the inclination angle of the stylus 20 relative to the writing pad 30 is θ 1; the writing handwriting T3 is the handwriting input by the handwriting pen 20 in the handwriting board 30 when the inclination angle of the handwriting pen 20 relative to the handwriting board 30 is θ 2, wherein 90 ° > θ 1 > θ 2 > 0.

That is to say, the preset standard width is smaller than other preset widths, when the writing pen 20 is perpendicular to the writing pad 30, the writing width of the writing trace is the narrowest, and when the writing pen 20 is inclined relative to the writing pad 30, the writing width of the writing trace and the inclination angle are in an inverse relationship, that is, the smaller the inclination angle is, the wider the writing width of the writing trace is.

Optionally, in another embodiment, the adjusting module 43 may be further configured to determine, according to a third preset corresponding relationship between the orientation included angle, the inclination included angle, and the handwriting width, the calculated handwriting width corresponding to the orientation included angle and the inclination included angle, and display the handwriting of the handwriting pen with the determined handwriting width, so that the thickness of the handwriting can be adjusted through the writing posture. That is, the handwriting width is related to both the azimuth angle and the inclination angle.

Optionally, in still other embodiments, the adjusting module 43 may be specifically configured to display the writing trace of the stylus pen 20 with a preset standard width when the value of the orientation angle is zero, that is, the orientation of the stylus pen 20 is the same as the orientation of the preset direction of the tablet 30; and when the value of the orientation included angle is not zero, that is, the orientation of the handwriting pen 20 is different from the orientation of the preset direction of the handwriting board 30, determining the calculated handwriting width corresponding to the inclination included angle according to a fourth preset corresponding relationship between the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen with the determined handwriting width.

That is, when the orientation of the writing pen 20 is the same as the orientation of the writing pad 30 in the preset direction, the handwriting width is independent of the inclined angle and is a preset standard width; and when the orientation of the stylus 20 is different from the orientation of the preset direction of the writing pad 30, the handwriting width is proportional to the inclined angle. The fourth preset corresponding relationship may be the same as the second preset corresponding relationship. It is understood that the fourth predetermined corresponding relationship may also be different from the second predetermined corresponding relationship.

It is understood that the variation of the writing width of the writing script is not limited to the above example, and those skilled in the art can make some variations on the example.

In an embodiment, the adjusting module 43 may be an independent electronic device, and is connected to the first calculating unit 412 and the second calculating unit 422 respectively to obtain the orientation included angle determined by the first calculating unit 412 and the tilt included angle determined by the second calculating unit 422, so as to adjust the handwriting of the stylus pen according to the orientation included angle and/or the tilt included angle. Alternatively, in another embodiment, as shown in fig. 6, the adjusting module 43 may also be a part of the controller 44.

Referring to fig. 1 again, in the present embodiment, the handwriting input control device 40 may further include a storage module 45, and the storage module 45 may be configured to pre-store the first, second, third, and fourth preset corresponding relationships between the included angle and the handwriting width, the first preset pressure value, the second preset pressure value, and the like. The storage module 45 may be disposed on the tablet 30, and the storage module 45 may include a high speed random access memory, and may further include a nonvolatile memory, such as a Smart Media Card (SMC), a Flash memory Card (Flash Card), and the like.

The handwriting input control device 40 provided in the embodiment of the present application adopts a simple structure and algorithm to realize the detection of the writing gesture, and realizes the handwriting restoration of the handwriting pen 20 when writing on the handwriting board 30 according to the detected writing gesture, i.e., adjusts the writing gesture, so that the writing effect of the handwriting pen 20 is closer to the writing effect of a real writing pen, and thus, more real use experience can be brought to the user.

Fig. 13 is a flowchart illustrating a handwriting input control method according to an embodiment of the present application. The handwriting input control method can adopt the handwriting input control device 40 to adjust the handwriting of the handwriting pen 20, so that the writing effect of the handwriting pen 20 is closer to the real writing effect of the writing pen. As shown in fig. 13, the handwriting input control method includes the following steps.

Step 1301, detecting an orientation angle of the stylus pen 20 relative to the writing pad 30 and detecting a tilt angle of the stylus pen 20 relative to the writing pad 30 during writing.

Fig. 14 is a sub-flowchart of a handwriting input control method provided in an embodiment of the present application, and is used to detect an orientation angle of the stylus 20 relative to the tablet 30 during writing. As shown in fig. 14, the handwriting input control method includes the following steps.

In step 1401, azimuth data of the stylus pen 20 and the tablet 30 is detected during writing, where the azimuth data of the tablet 30 is azimuth data reflecting a preset direction of the tablet 30.

Step 1402, calculating the azimuth angles of the preset directions of the stylus pen 20 and the writing pad 30 according to the azimuth data of the stylus pen 20 and the writing pad 30, respectively.

Step 1403, calculating a difference value between the orientation angle of the stylus pen 20 and the orientation angle of the preset direction of the tablet 30 according to the calculated orientation angle, and determining an absolute value of the difference value as an orientation angle of the stylus pen 20 relative to the preset direction of the tablet 30.

It is understood that, when the calculated azimuth angle of the stylus pen 20 and the azimuth angle of the preset direction of the tablet 30 are different, that is, the value of the azimuth angle is not zero, it may be determined that the direction in which the stylus pen 20 is facing is different from the direction of the preset direction of the tablet 30.

Fig. 15 is a sub-flowchart schematic diagram of a handwriting input control method provided in the embodiment of the present application, configured to detect an inclined angle of the stylus 20 relative to the tablet 30 during a writing process. As shown in fig. 15, the handwriting input control method includes the following steps.

In step 1501, tilt angle data of the stylus 20 and the tablet 30 are detected during writing.

Step 1502, calculating tilt angles of the stylus pen 20 and the writing pad 30 according to the tilt angle data of the stylus pen 20 and the writing pad 30, respectively.

Step 1503, calculating a difference between the tilt angle of the stylus pen 20 and the tilt angle of the tablet 30 according to the calculated tilt angle, and determining an absolute value of the difference as a tilt angle of the stylus pen 20 relative to the tablet 30.

Referring to fig. 13 again, in step 1302, the handwriting of the stylus pen is adjusted according to at least one of the orientation angle and the tilt angle.

In an embodiment, the step 1302 may specifically include:

and determining the calculated handwriting width corresponding to the orientation included angle according to a first preset corresponding relation between the orientation included angle and the handwriting width, and displaying the handwriting of the handwriting pen 20 according to the determined handwriting width, so that the thickness of the handwriting can be adjusted through the writing posture.

Displaying the handwriting of the handwriting pen 20 with a preset standard width when the calculated value of the orientation included angle is zero, that is, the orientation of the handwriting pen 20 is the same as the orientation of the handwriting board 30 in the preset direction; and displaying the handwriting of the handwriting pen 20 with other preset widths when the calculated value of the orientation angle is not zero, that is, when the orientation of the handwriting pen 20 is different from the orientation of the preset direction of the writing pad 30.

Optionally, in some embodiments, the handwriting input control method may further include:

comparing the azimuth angle of the stylus pen 20 with the azimuth angle of the preset direction of the writing pad 30;

when the azimuth angle of the stylus pen 20 is larger than the azimuth angle in the preset direction of the handwriting board 30, gradually fading the color of the handwriting along the first direction; and

when the azimuth angle of the stylus pen 20 is smaller than the azimuth angle of the preset direction of the writing pad 30, gradually fading the color of the written handwriting along a second direction;

the first direction and the second direction are two opposite directions.

Therefore, the relation between the handwriting and the holding direction and the writing force of the handwriting pen during real writing can be embodied, and the use experience of a user can be provided.

Optionally, in another embodiment, the step 1302 may specifically include:

and determining the calculated handwriting width corresponding to the inclined included angle according to a second preset corresponding relation between the inclined included angle and the handwriting width, and displaying the handwriting of the handwriting pen 20 according to the determined handwriting width, so that the thickness of the handwriting can be adjusted through the writing posture.

When the calculated value of the inclined included angle is 90 degrees, that is, when the handwriting pen 20 is perpendicular to the handwriting board 30, the writing trace of the handwriting pen 20 may be displayed in a preset standard width. When the calculated tilt angle is not 90 degrees, that is, when the stylus pen 20 is tilted with respect to the tablet 30, the handwriting of the stylus pen 20 may be displayed in other preset widths.

For example, also taking fig. 11 as an example, suppose that the handwriting T1 is the handwriting input by the stylus 20 in the writing pad 30 when the stylus 20 is perpendicular to the writing pad 30; the handwriting T2 is the handwriting input by the stylus 20 in the writing pad 30 when the tilt angle of the stylus 20 relative to the writing pad 30 is θ 1; the writing handwriting T3 is the handwriting input by the handwriting pen 20 in the handwriting board 30 when the inclination angle of the handwriting pen 20 relative to the handwriting board 30 is θ 2, wherein 90 ° > θ 1 > θ 2 > 0.

Optionally, in yet another embodiment, the step 1302 may specifically include:

and determining the calculated handwriting width corresponding to the orientation included angle and the inclination included angle according to a third preset corresponding relation among the orientation included angle, the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width, so that the thickness of the handwriting can be adjusted through the writing posture. That is, the handwriting width is related to both the azimuth angle and the inclination angle.

Optionally, in further embodiments, the step 1302 may specifically include:

when the value of the orientation angle is zero, displaying the handwriting of the stylus pen 20 with a preset standard width; and

and when the value of the orientation included angle is not zero, determining the calculated handwriting width corresponding to the inclination included angle according to a fourth preset corresponding relation between the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width.

According to the handwriting input control method, the writing gesture is detected, and the writing handwriting is adjusted according to the detected writing gesture, so that the writing effect of the handwriting pen is closer to the writing effect of a real writing pen, and the user can be provided with more real use experience.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

A handwriting input control device is applied to a handwriting induction system, the handwriting induction system comprises a handwriting pen and a handwriting board, and the handwriting input control device is characterized by comprising:

the azimuth angle detection module is used for detecting an azimuth angle of the handwriting pen relative to the handwriting board in the writing process;

the inclination angle detection module is used for detecting an inclination angle of the handwriting pen relative to the handwriting board in the writing process; and

and the adjusting module is used for adjusting the handwriting of the handwriting pen according to at least one of the azimuth included angle and the inclination included angle.
The handwriting input control device according to claim 1, wherein the adjusting module is configured to determine a handwriting width corresponding to the calculated orientation angle according to a first preset corresponding relationship between the orientation angle and the handwriting width, and display the handwriting of the handwriting pen with the determined handwriting width; or

The adjusting module is used for determining the calculated handwriting width corresponding to the inclined included angle according to a second preset corresponding relation between the inclined included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width; or

The adjusting module is used for determining the calculated handwriting width corresponding to the orientation included angle and the inclination included angle according to a third preset corresponding relation among the orientation included angle, the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width; or

The adjusting module is used for displaying the handwriting of the handwriting pen in a preset standard width when the value of the azimuth included angle is zero; and when the orientation included angle is not zero, determining the calculated handwriting width corresponding to the inclination included angle according to a fourth preset corresponding relation between the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width.
The handwriting input control apparatus of claim 1 or 2, wherein said azimuth angle detection module comprises:

the azimuth angle detection component is used for detecting azimuth angle data of the handwriting pen and the handwriting board in the writing process, wherein the azimuth angle data of the handwriting board is azimuth data reflecting the preset direction of the handwriting board; and

the first calculation unit is used for calculating the azimuth angles of the preset directions of the handwriting pen and the handwriting board according to the azimuth angle data of the handwriting pen and the handwriting board, calculating the difference value between the azimuth angle of the handwriting pen and the azimuth angle of the preset direction of the handwriting board according to the calculated azimuth angles, and determining the absolute value of the difference value as the azimuth included angle of the handwriting pen relative to the preset direction of the handwriting board.
The handwriting input control apparatus of claim 3, wherein said azimuth angle detection component comprises:

the first azimuth detection element is arranged on the stylus pen and used for detecting azimuth data of the stylus pen in the writing process;

and the second azimuth angle detection element is arranged on the handwriting board and used for detecting the azimuth angle data of the handwriting board in the writing process.
The handwriting input control apparatus of claim 4, wherein said first azimuth angle detecting element and said second azimuth angle detecting element are geomagnetic sensors.
The handwriting input control apparatus of claim 1 or 2, wherein the tilt angle detection module comprises:

the inclination angle detection component is used for detecting inclination angle data of the handwriting pen and the handwriting board in the writing process; and

and the second calculation unit is used for calculating the inclination angles of the handwriting pen and the handwriting board according to the inclination angle data of the handwriting pen and the handwriting board, calculating the difference value between the inclination angle of the handwriting pen and the inclination angle of the handwriting board according to the calculated inclination angles, and determining the absolute value of the difference value as the inclination included angle of the handwriting pen relative to the handwriting board.
The handwriting input control apparatus of claim 6, wherein the tilt angle detection component comprises:

the first inclination angle detection element is arranged on the stylus pen and used for detecting inclination angle data of the stylus pen in the writing process;

and the second inclination angle detection element is arranged on the handwriting board and used for detecting inclination angle data of the handwriting board in the writing process.
The handwriting input control apparatus of claim 7, wherein the first tilt angle detection element and the second tilt angle detection element each comprise a pressure sensor and a metal ball provided on a force-receiving surface of the pressure sensor, and the tilt angle data is pressure data sensed by the corresponding pressure sensor.
The handwriting input control apparatus according to claim 8, wherein the second calculation unit determines the tilt angle of the handwriting pen according to the pressure data sensed by the pressure sensor of the first tilt angle detection element and a first preset pressure value, wherein the first preset pressure value is the gravity of the corresponding metal ball sensed by the pressure sensor of the first tilt angle detection element when the handwriting pen is in a vertical state;

the second calculation unit further determines the inclination angle of the handwriting board according to pressure data sensed by the pressure sensor of the second inclination angle detection element and a second preset pressure value, wherein the second preset pressure value is the gravity of the corresponding metal ball sensed by the pressure sensor of the second inclination angle detection element when the handwriting board is in a vertical state.
The handwriting input control apparatus of claim 3, wherein the adjusting module is further configured to gradually fade the color of the writing trace in a first direction when the orientation angle of the handwriting pen is greater than the orientation angle of the preset direction of the handwriting board, and gradually fade the color of the writing trace in a second direction when the orientation angle of the handwriting pen is less than the orientation angle of the preset direction of the handwriting board, wherein the first direction and the second direction are opposite directions.
A handwriting input control method, comprising:

detecting the position included angle of a handwriting pen relative to a handwriting board in the writing process, and detecting the inclined included angle of the handwriting pen relative to the handwriting board; and

and adjusting the handwriting of the handwriting pen according to at least one of the orientation included angle and the inclination included angle.
The handwriting input control method according to claim 11, wherein the adjusting the handwriting of the handwriting pen according to at least one of the orientation angle and the tilt angle comprises:

determining the calculated handwriting width corresponding to the orientation included angle according to a first preset corresponding relation between the orientation included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width; or

Determining the calculated handwriting width corresponding to the inclined included angle according to a second preset corresponding relation between the inclined included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width; or

Determining the calculated handwriting width corresponding to the orientation included angle and the inclination included angle according to a third preset corresponding relation among the orientation included angle, the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width; or

When the value of the orientation included angle is zero, displaying the handwriting of the handwriting pen with a preset standard width; and when the orientation included angle is not zero, determining the calculated handwriting width corresponding to the inclination included angle according to a fourth preset corresponding relation between the inclination included angle and the handwriting width, and displaying the handwriting of the handwriting pen according to the determined handwriting width.
The handwriting input control method of claim 11 or 12, wherein said detecting the orientation angle of the pen with respect to the writing pad during writing comprises:

detecting azimuth angle data of the handwriting pen and the handwriting board in a writing process, wherein the azimuth angle data of the handwriting board is azimuth data reflecting a preset direction of the handwriting board;

respectively calculating azimuth angles of preset directions of the handwriting pen and the handwriting board according to azimuth data of the handwriting pen and the handwriting board; and

and calculating the difference between the position angle of the handwriting pen and the position angle of the preset direction of the handwriting board according to the calculated position angle, and determining the absolute value of the difference as the position included angle of the handwriting pen relative to the preset direction of the handwriting board.
The handwriting input control method according to claim 11 or 12, wherein said detecting the tilt angle of said handwriting pen with respect to said handwriting board during writing comprises:

detecting inclination angle data of the handwriting pen and the handwriting board in a writing process;

respectively calculating the inclination angles of the handwriting pen and the handwriting board according to the inclination angle data of the handwriting pen and the handwriting board; and

and calculating the difference value between the inclination angle of the handwriting pen and the inclination angle of the handwriting board according to the calculated inclination angle, and determining the absolute value of the difference value as the inclination included angle of the handwriting pen relative to the handwriting board.
The handwriting input control method of claim 13, said method further comprising:

comparing the azimuth angle of the handwriting pen with the azimuth angle of the preset direction of the handwriting board;

when the azimuth angle of the handwriting pen is larger than the azimuth angle of the handwriting board in the preset direction, gradually fading the color of the handwriting along the first direction; and

when the azimuth angle of the handwriting pen is smaller than the azimuth angle of the handwriting board in the preset direction, gradually fading the color of the handwriting along a second direction;

the first direction and the second direction are two opposite directions.
A handwriting sensing system comprising a stylus, a tablet, and a handwriting input control apparatus according to any of claims 1-10.