CN113641256A - Writing device capable of recognizing writing angle and method for recognizing writing angle - Google Patents
Writing device capable of recognizing writing angle and method for recognizing writing angle Download PDFInfo
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- CN113641256A CN113641256A CN202110900374.9A CN202110900374A CN113641256A CN 113641256 A CN113641256 A CN 113641256A CN 202110900374 A CN202110900374 A CN 202110900374A CN 113641256 A CN113641256 A CN 113641256A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention aims to provide a writing device capable of identifying a writing angle, which is used for writing on a carrier with a plurality of code points. The cylinder contains an interior space and extends in a writing direction, and the cylinder also contains an end face through which the writing direction passes. The writing element is arranged on the column body, and the extending direction of the writing element is parallel to the writing direction. The camera shooting part is arranged on the end face and used for collecting images containing a plurality of partial code points towards the writing direction. The main control board is arranged in the inner space and is electrically connected to the camera shooting part. The main control board receives the image to obtain corresponding code point information, so that the writing angle of the writing device corresponding to the carrier is obtained according to the code point information. The main control board compares the writing angle with the allowable angle range and generates an alarm signal when the writing angle exceeds the allowable angle range.
Description
Technical Field
The invention relates to an electronic writing device, in particular to a writing device capable of recognizing a writing angle.
Background
Writing is an important skill, and most people practice writing with a pen from a small time, and there are many studies on the holding posture of the pen. The correct holding posture of the pen can influence the finger fatigue of a writer, seriously and even shorten the writing time, and simultaneously influence the aesthetic degree of the written handwriting. However, most of the holding posture correctors can only assist the fingers to hold the pen in a correct manner, and cannot correct the writing angle of the pen, so that the holding posture needs to be corrected by subjective judgment or muscle memory, and if the correction needs to be performed for a long time, the user needs to keep staring at his hand or be helped by others.
Most of the current writing correction relies on a gyroscope to measure the angle. In view of the fact that many smart pens assist writing work nowadays, the smart pens mainly include capacitive pens, electromagnetic pens and dot matrix pens, and can write on a system or collect writing data. The dot matrix pen needs to be matched with a code point book for use, and the code point book is formed by laying code points on paper. When the dot matrix pen writes on the code point book, the passed code points are collected and identified by the dot matrix pen to form a digital track, and the digital track can be used for electronic input.
Disclosure of Invention
The present invention is directed to a writing device capable of recognizing a writing angle, so as to solve the problems of the related art.
In order to achieve the purpose, the invention provides the following technical scheme: a writing device capable of recognizing writing angles is used for writing on a carrier with a plurality of code points and is characterized by comprising a cylinder, a writing piece, a camera shooting part and a main control board. The cylinder contains an interior space and extends in a writing direction, and the cylinder also contains an end face through which the writing direction passes. The writing element is arranged on the column body, and the extending direction of the writing element is parallel to the writing direction. The camera shooting part is arranged on the end face and used for collecting images containing a plurality of partial code points towards the writing direction. The main control board is arranged in the inner space and is electrically connected to the camera shooting part. The main control board receives the image to obtain corresponding code point information, so that the writing angle of the writing device corresponding to the carrier is obtained according to the code point information. The main control board compares the writing angle with the allowable angle range and generates an alarm signal when the writing angle exceeds the allowable angle range.
Preferably, the writing angle comprises a grip angle, the grip angle being an inclination angle of the writing direction with respect to a normal direction of the support, the allowable angle range encompassing an inclination angle range.
Preferably, the lateral direction of the cylinder includes a reference plane, and the tilt angle range is defined by the captured code point information based on the reference plane facing the carrier.
Preferably, the writing angle comprises a data angle, the data angle being an azimuth angle between a pointing direction of the plurality of code points of the portion defined on the carrier and the reference axis, the allowable angle range encompassing an azimuth angle range.
Preferably, the lateral direction of the cylinder includes a reference plane, and the tilt angle range is defined by the captured code point information based on the reference plane facing the carrier.
Furthermore, the writing device capable of recognizing the writing angle further comprises a pressure sensor arranged in the inner space and electrically connected to the main control board; the pressure sensor is used for sensing the pressure value of the writing piece pressed in the axial direction, and the main control board starts the camera shooting part to capture an image when the pressure value exceeds a threshold value and receives the image to obtain corresponding code point information.
The invention also proposes a method for recognizing the writing angle, suitable for a writing instrument, which is used for writing on a support with a plurality of points and which has at least a cylinder and a writing element; extend along the writing direction to the cylinder still contains the terminal surface, and the writing direction passes through the terminal surface, and the writing element sets up in the cylinder, and the extending direction of writing element is on a parallel with the writing direction. The method comprises the following steps: capturing an image containing a plurality of code points of a part towards the writing direction; receiving an image to obtain corresponding code point information; obtaining the writing angle of the writing device corresponding to the carrier according to the code point information; and comparing the writing angle with the allowable angle range, and generating an alarm signal when the writing angle exceeds the allowable angle range.
Preferably, the writing angle comprises a grip angle, the grip angle being an inclination angle of the writing direction with respect to a normal direction of the support, the allowable angle range encompassing an inclination angle range.
Preferably, a reference plane is defined which is located laterally to the cylinder, the tilt angle range being defined by the captured code point information based on the reference plane facing the carrier.
Preferably, the writing angle comprises a data angle, the data angle being an azimuth angle between a pointing direction of the plurality of code points of the portion defined on the carrier and the reference axis, the allowable angle range encompassing an azimuth angle range.
Preferably, a reference plane is defined which is located laterally to the cylinder, the allowable angular range being defined by the captured code point information when the reference plane is oriented towards the carrier.
Furthermore, the method for identifying the writing angle further comprises the steps of sensing the pressure value of the writing piece pressed in the axial direction, capturing an image when the pressure value exceeds a threshold value, and analyzing code point information in the image.
Compared with the prior art, the invention has the beneficial effects that: the user can know the change of the pen holding posture through an early warning mode, and the pen holding posture is improved, so that the user can more intuitively improve the pen holding posture habit.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments of the present invention.
Drawings
Fig. 1 is a perspective view of a writing instrument according to an embodiment of the present invention.
Fig. 2 is a bottom view of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Fig. 4 and 5 are schematic diagrams of the tilt angle (grip angle) in the embodiment of the present invention. Fig. 6 and 7 are schematic views of azimuth angles (data angles) in the embodiment of the present invention. FIG. 8 is a flow chart of a method of recognizing writing angles in accordance with the present invention.
Wherein, the reference numbers:
1 writing instrument
2 support
21 code point
22 angle of inclination
23 azimuth angle 23
11 column body
111 end face
112 inner space
12 writing element
121 pen point
13 image pickup part
131 light source device
132 image pickup element
133 optical filter
14 Main control board
15 indicating unit
16 cell
17 pressure sensor
18 bluetooth transmission device
L direction of writing
N normal direction
X reference axis X
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or assembly must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, fig. 2 and fig. 3, a writing device 1 capable of recognizing a writing angle according to an embodiment of the present invention is used for writing on a carrier 2 of a carrier 2 having a plurality of code points 21. Each code point 21 carries corresponding code point information, and the code point information corresponds to coordinate information of the position of the code point 21 or the code point information includes coordinate information. The code dots 21 may be a relief structure on the surface of the carrier 2, or may be special ink (especially ink that is colorless but can absorb or reflect light of a specific invisible wavelength such as infrared ray) printed or printed on the surface of the carrier 2. The carrier 2 may be a paper or a writing pad or a flat plate, i.e. the code points 21 are laid (e.g. printed) on the carrier 2.
As shown in fig. 1, 2 and 3, the writing instrument 1 capable of recognizing a writing angle includes a cylinder 11, a writing material 12, an image pickup unit 13 and a main control board 14. The cylinder 11 includes an inner space 112 and extends in the writing direction L. The post 11 also includes a gripping surface, a reference surface, and an end surface 111. The gripping surface and the reference surface are located laterally of the cylinder and are arranged in series about the writing direction L to define an interior space 112. The end surface 111 is connected to the side of the holding surface corresponding to the reference surface, and the writing direction L passes through the end surface 111. In one embodiment, the column 11 may be a triangular column having a side surface A, a side surface B and a side surface C, wherein the side surfaces A and B may be used as holding surfaces for holding the index finger and thumb of the user, and the side surface C may be used as a reference surface facing downward toward the carrier 2 when the user holds the column 11. However, the shape of the column 11 is not limited to a triangular column, and the column is suitable for being held by a user, but it is designed such that the reference surface faces downward toward the carrier 2 when the user holds the column. For convenience of explanation, the surface a, the surface B, and the surface C represent two gripping surfaces and a reference surface, respectively.
The writing element 12 is disposed on the barrel 11, preferably on the end surface 111, and the position of the writing element 12 on the end surface 111 is close to the ridge connecting the a-plane and the B-plane. The extension direction of the writing element 12 is parallel to said writing direction L. The writing element 12 may be a refill for a ballpoint pen, the tip 121 of which is capable of performing a specific writing operation on the support 2; writing element 12 may also be a refill for other types of pens.
As shown in fig. 2 and 3, the image capturing unit 13 is disposed on the end surface 111, and when the writing element 12 and the carrier 2 write, the image capturing unit 13 can capture an image including a part of the code dots 21 on the carrier 2 in the writing direction L. The code points captured by the camera 13 will change with the writing angle, so that the main control board 14 can determine whether the writing angle is correct according to the code point information. As shown in fig. 3, specifically, the imaging unit 13 includes a light source device 131 and an imaging element 132 (for example, a CMOS imaging element). The light source device 131 and the image pickup device 132 may be disposed in the internal space 112, and a direction in which the light source device 131 projects light may be substantially parallel to a direction in which the image pickup device 132 picks up an image. The light source device 131 and the image capturing device 132 project light and capture images through holes on the end surface 111, respectively, and the holes may be configured with lenses to adjust the viewing angle of the images. Preferably, the light source device 131 may be an infrared light emitting diode, and the image pickup part 13 further includes an optical filter 133. The filter 133 is disposed below the image pickup element 132 and the light source device 131, and is used for filtering out spectra other than infrared rays, so that the image pickup element 132 can clearly obtain an infrared image of the code point 21, and interference of ambient light is reduced. Meanwhile, the infrared light emitting diode is used as the light source device 131, so that the interference of unnecessary visible light to the writing of the user can be avoided.
As shown in fig. 3, the main control board 14 is disposed in the internal space 112 and electrically connected to the camera portion 13; in particular, the image pickup device 132 and the light source device 131 are electrically connected to the main control board 14, respectively. The main control board 14 receives the image containing the partial code point 21 to obtain the corresponding code point information, for example, obtain the coordinate information corresponding to the code point 21, so as to obtain the writing angle of the writing direction L corresponding to the carrier 2 according to the code point information. The main control board 14 compares the writing angle with the allowable angle range and generates an alarm signal when the writing angle exceeds the allowable angle range. The main control board 14 is a microcontroller chip based circuit board and provides the necessary power/signal conversion functions. The comparison between the writing angle and the allowable angle range can be performed by looking up the table, for example, by looking up the table to obtain the writing angle corresponding to the captured code point information, and then determining whether the writing angle is within the allowable angle range.
As shown in fig. 3, the writing instrument 1 capable of recognizing the writing angle further includes an indication unit 15, a battery 16, a pressure sensor 17 and a bluetooth transmission device 18.
The indication unit 15 is electrically connected to the main control board 14, and is configured to receive the alarm signal and perform a corresponding action. Further, the indicating unit 15 may be a buzzer capable of emitting an alarm sound according to the alarm signal; the indicating unit 15 may be a light signal capable of emitting an indicating light (e.g., a fast flashing light) according to the alarm signal; the indication unit 15 may be a small display screen, and may display icons or characters as alarm information. The battery 16 is disposed in the inner space 112 and electrically connected to the main control board 14 for providing power to drive the main control board 14 and other components.
The pressure sensor 17 is disposed in the inner space 112 and electrically connected to the main control board 14. The pressure sensor 17 is used for sensing the pressure value of the writing element 12 pressed in the axial direction, particularly the pressure value generated when the pen tip 121 of the writing element 12 writes on the carrier 2, and transmitting the pressure value to the main control board 14. The main control board 14 starts the camera 13 and continuously analyzes the code point information in the image when not necessary; the main control board 14 only needs to start the camera 13 to capture the image when the pressure value exceeds the threshold (when the writing action is sensed), and analyze the code point information in the image, thereby reducing unnecessary power consumption. The bluetooth transmission device 18 is electrically connected to the main control board 14, and the bluetooth transmission device 18 is used for outputting writing angles or alarm information to other connectable devices.
Specifically, the writing instrument 1 of the present invention is designed such that the user should write on the surface facing the support 2 with the reference surface (i.e., the C surface) while holding the grip surfaces (i.e., the a surface and the B surface) with the index finger and the thumb, respectively, while writing.
As shown in fig. 4, 5 and 6, further, the writing angle includes a grip angle, which is an inclination angle 22 of the writing direction L with respect to the normal direction N of the support 2; that is, when the inclination angle 22 is 0 degrees, the writing direction L is completely upright (perpendicular) to the paper surface, and when the inclination angle 22 is 90 degrees, the writing direction L is parallel to the paper surface and the C-plane fits to the paper surface (such writing posture does not occur practically). The allowable angle range includes a tilt angle 22 (grip angle) range defined by the captured code point information when the C-plane (reference plane) is oriented toward the carrier 2. Thus, as shown in FIG. 5, when the angle of inclination 22 is negative, the C-plane (reference plane) will not be directly toward the page, e.g., at an angle greater than 90 degrees from the page; in this case, the user may write at an inappropriate tilt angle, or the user may not correctly hold the grip surface and may not face the C surface (reference surface) toward the paper surface during writing.
As shown in fig. 6 and 7, the writing angle includes a data angle, which is an azimuth angle 23 formed between the orientation defined by the partial code dot 21 captured by the camera 13 on the paper surface of the carrier 2 and the reference axis X, and the allowable angle range includes an azimuth angle 23 (data angle) range. The tilt angle range is defined by the retrieved code point information based on the C-plane (reference plane) as oriented towards the carrier 2. When the imaging unit 13 images the carrier in an oblique direction on the paper, many code points 21 are acquired in a direction of a specific orientation, and the main control board 14 analyzes the code point information (particularly coordinate information) to acquire orientations defined by the code points 21 on the paper of the carrier 2, thereby acquiring an azimuth angle 23 formed between the orientation and the reference axis X.
That is, when the main control board 14 of the writing instrument 1 determines the writing angle, the grip angle and the data angle (the inclination angle 22 and the azimuth angle 23) are considered together. When any angle value exceeds the corresponding allowable range, the main control board 14 judges that the holding is wrong, and an alarm message is sent out.
The following table one will be referred to and exemplified with reference to fig. 6 and 7. In the example of fig. 6 and 7, the reference axis X is an imaginary line parallel to the width direction of the carrier 2 and directed to the left side of the paper and the landing point through the pen tip 121, and the azimuth angle 23 is an angular value in the counterclockwise direction with reference to the reference axis X.
Based on the reference axis X and the falling point of the pen tip 121, the paper surface can be divided into four quadrants, including a first quadrant I, a second quadrant II, a third quadrant III, and a fourth quadrant IV from the upper right, the upper left, the lower left, and the lower right.
As shown in FIG. 6 and FIG. 7, for the right-handed holding posture, the preferred tilt angle 22 (holding posture angle) is between 0-45 degrees, i.e. the range of the tilt angle 22 (holding posture angle) is 0-45 degrees. The preferred azimuth angle range falls between the first quadrant I and the fourth quadrant IV, especially between 135-225 degrees, i.e. the azimuth angle 23 (data angle) range is 135-225 degrees. As shown in fig. 6, from the point a to the point i, when the grip angle and the data angle (the inclination angle 22 and the azimuth angle 23) are determined, the main control board 14 can determine that the user is correctly gripping. The main control board 14 may also send an alarm early when the maximum grip, for example, from the point i to the point o, is held at an angle 22 of 0 degree or 45 degrees and holds the a side and the B side, which is already between the correct grip and the incorrect grip.
As shown in fig. 7, the erroneous grip includes several states. The first state is that the user holds the a-side and the B-side correctly, but the actual grip angle and data angle (the tilt angle 22 and the azimuth angle 23) are not appropriate, such as the landing points p, s, v in fig. 7, the main control board 14 determines that the tilt angle 22 (the grip angle) is negative 0-15 degrees, and the azimuth angle 23 falls in the third quadrant III, such as the landing points p, s, v. In this case, the right-handed user is inclined to the left in the pen-holding posture and does not have an appropriate writing angle. In the second state, the user holds the holding surfaces a and C (the wrong surface), and the data obtained by the code point information shows that the azimuth angle 23 falls in the third quadrant III, such as the falling point q, t, w, and the inclination angle 22 (holding angle) shows a negative angle. The third state is that the user holds the grip B-plane and the grip C-plane (the wrong plane), so that the azimuth angle 23 falls in the second quadrant II, e.g. the falling point x, u, r, and the inclination angle 22 (the grip angle) is at an angle. When the above state occurs, the main control board 14 determines that the writing angle is poor or the writing angle is wrong, and gives an alarm message to the indicating unit 15 to give an alarm sound or an indicating light.
Referring to fig. 8, the present invention further provides a method for recognizing a writing angle, which is applied to the writing device 1. The method is described below.
Step S11: the image pickup unit 13 captures an image including a part of the code dots 21 in the writing direction L.
Step S12: the image is received by the main control board 14 to obtain the corresponding code point information.
Step S13: the main control board 14 obtains the writing angle of the writing device 1 corresponding to the carrier 2 according to the code point information.
Step S14: the main control board 14 compares the writing angle with the allowable angle range and generates an alarm signal when the writing angle exceeds the allowable angle range.
Capturing an image comprising a portion of the plurality of code points toward the writing direction;
receiving the image to obtain corresponding code point information;
obtaining the writing angle of the writing device corresponding to the carrier according to the code point information; and
and comparing the writing angle with an allowable angle range, and generating an alarm signal when the writing angle exceeds the allowable angle range.
Step S10 is further included before step S11, in which the pressure sensor 17 senses the pressure value of the writing element 12 pressed in the axial direction. When the pressure value exceeds the threshold value, the main control board 14 proceeds to step S11 to capture the image, and receives the image to obtain the corresponding code point information in step S12.
Preferably, the writing angle comprises a grip angle, which is the inclination angle 22 of the writing direction L with respect to the normal direction N of the support 2 when the C-plane is facing the support 2, and the allowable angle range comprises an inclination angle range. Preferably, the writing angles comprise data angles, which are the azimuth angles 23 between the orientation of the partial code points 21 defined on the paper of the carrier 2 and the reference axis X, the allowable angle range encompassing the azimuth angle range.
Preferably, the main control board 14 defines a reference axis X parallel to the paper width direction of the carrier 2 and passing through the pen tip 121 of the writing part 12, and the carrier 2 is divided into a first quadrant I, a second quadrant II, a third quadrant III and a fourth quadrant IV from upper right, upper left, lower left and lower right based on the reference axis X and the falling point of the pen tip 121, and the azimuth angle range falls between the first quadrant I and the fourth quadrant IV.
The writing device 1 capable of recognizing writing angles provided by the embodiment of the present invention is described in detail above, and a person skilled in the art may change the embodiments and the application scope according to the idea of the embodiment of the present invention. In view of the foregoing, it will be seen that this invention is not limited by the foregoing description, but is intended to cover all equivalent modifications and changes in accordance with the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. A writing instrument capable of recognizing a writing angle for writing on a support having a plurality of code points, comprising:
a cylinder including an interior space and extending in a writing direction, and further including an end surface through which the writing direction passes;
a writing part which is arranged on the column body, and the extending direction of the writing part is parallel to the writing direction;
the camera shooting part is arranged on the end surface and used for collecting images containing part of the code points towards the writing direction; and
the main control board is arranged in the inner space and is electrically connected with the camera shooting part; the main control board receives the image to obtain corresponding code point information, so that the writing angle of the writing device corresponding to the carrier is obtained according to the code point information; the main control board compares the writing angle with an allowable angle range and generates an alarm signal when the writing angle exceeds the allowable angle range.
2. A writing instrument as claimed in claim 1, wherein the writing angle comprises a grip angle, the grip angle being an inclination of the writing direction relative to a normal to the support, the allowable range of angles encompassing a range of inclination angles.
3. A writing instrument as claimed in claim 2, wherein the lateral side of the barrel includes a reference surface, the range of tilt angles being defined by the captured codepoint information based on the reference surface facing the support.
4. A writing instrument as claimed in claim 1, wherein the writing angles include a data angle which is an azimuth angle between a direction defined by a portion of the plurality of code points on the support and a reference axis, the permissible range of angles encompassing an azimuth range.
5. A writing instrument as claimed in claim 4, wherein the lateral side of the barrel includes a reference surface, the range of tilt angles being defined by the captured codepoint information based on the reference surface facing the support.
6. The writing instrument of claim 1, further comprising a pressure sensor disposed in the interior space and electrically connected to the main control board; the pressure sensor is used for sensing the pressure value of the writing part pressed in the axial direction, and the main control board starts the camera shooting part to capture the image when the pressure value exceeds a threshold value and receives the image to obtain corresponding code point information.
7. A method of recognizing a writing angle, which is applied to a writing instrument for writing on a support having a plurality of points, and which has at least a cylinder and a writing element; extending along a writing direction, and the cylinder further comprising an end surface through which the writing direction passes, the writing element being disposed on the cylinder, and the extending direction of the writing element being parallel to the writing direction; it is characterized by comprising the following steps:
capturing an image comprising a portion of the plurality of code points toward the writing direction;
receiving the image to obtain corresponding code point information;
obtaining the writing angle of the writing device corresponding to the carrier according to the code point information; and
and comparing the writing angle with an allowable angle range, and generating an alarm signal when the writing angle exceeds the allowable angle range.
8. The method of recognizing a writing angle according to claim 7, wherein the writing angle includes a grip angle, the grip angle is a tilt angle of the writing direction with respect to a normal direction of the support, and the allowable angle range includes a tilt angle range.
9. The method of recognizing a writing angle of claim 8, wherein a reference plane is defined at a lateral side of the cylinder, and the tilt angle range is defined by the captured code point information based on the reference plane facing the carrier.
10. A method of identifying a writing angle according to claim 7, wherein the writing angle comprises a data angle, the data angle being an azimuth angle between a pointing direction defined by a portion of the plurality of code points on the carrier and a reference axis, the allowable range of angles comprising an azimuth range.
11. The method of recognizing a writing angle of claim 10, wherein a reference plane is defined at a lateral side of the cylinder, and the allowable angle range is defined by the captured code point information based on the reference plane facing the carrier.
12. The method for identifying a writing angle of claim 7, further comprising sensing a pressure value of the writing element pressed in the axial direction, capturing the image when the pressure value exceeds a threshold value, and analyzing the code point information in the image.
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| CN202110900374.9A CN113641256A (en) | 2021-08-06 | 2021-08-06 | Writing device capable of recognizing writing angle and method for recognizing writing angle |
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| CN202110900374.9A CN113641256A (en) | 2021-08-06 | 2021-08-06 | Writing device capable of recognizing writing angle and method for recognizing writing angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459387A (en) * | 2022-04-12 | 2022-05-10 | 山东信息职业技术学院 | Detection apparatus for adopt AI visual identification technique rapid survey product gradient |
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| US20040164972A1 (en) * | 2003-02-24 | 2004-08-26 | Carl Stewart R. | Implement for optically inferring information from a planar jotting surface |
| CN1774690A (en) * | 2003-02-24 | 2006-05-17 | 电子手写产品公司 | Implement for optically inferring information from a planar jotting surface |
| CN102224484A (en) * | 2008-11-25 | 2011-10-19 | 吉田健治 | Handwritten input/output system, handwriting input sheet, information input system, and information input assistance sheet |
| JP2014081681A (en) * | 2012-10-12 | 2014-05-08 | Fuji Xerox Co Ltd | Information processor, program and information processing system |
| CN103995590A (en) * | 2014-05-16 | 2014-08-20 | 沈阳工业大学 | Electronic handwriting pen and method for correcting pen holding gestures |
| CN106915182A (en) * | 2015-12-25 | 2017-07-04 | 北京奇虎科技有限公司 | From the pen of correction pen holding posture |
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| CN107618290A (en) * | 2017-08-25 | 2018-01-23 | 触景无限科技（北京）有限公司 | Smart pen |
| CN112711341A (en) * | 2021-01-05 | 2021-04-27 | 北京字节跳动网络技术有限公司 | Writing device control method, writing device control device, terminal and storage medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459387A (en) * | 2022-04-12 | 2022-05-10 | 山东信息职业技术学院 | Detection apparatus for adopt AI visual identification technique rapid survey product gradient |
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