CN100489754C - Electronic soft pen for computer inputting - Google Patents

Abstract

An electronic soft pen used for computer input belongs to the field of computer external input. The technical gist of the present invention is: comprise writing body, the nib that writes on handwriting board, the sensor that conducts nib deformation, sensor is arranged in pen body, and nib is made of soft material, can produce deformation when writing, the size of deformation Proportional to the size of the writing force, it is sensed by the sensor and reflects the change of the applied pressure. The invention is mainly used in fields such as electronic calligraphy and painting performed by computer handwriting input. The advantages and effects of the present invention are: naturally and truly simulating the characteristics of various traditional soft pens, not only has a sensitive range of pressure changes, but also the nib will produce lifelike and natural deformations, fully simulating the real feeling of traditional soft pens, and electronically input Realizing the advantages of traditional soft brushes in calligraphy, painting and other fields is conducive to creating natural and vivid paintings and calligraphy works.

Description

Electronic soft pen for computer entry

technical field

The invention relates to an external input device for a computer, in particular to a handwriting input pen whose tip is made of soft material.

Background technique

Traditional stylus is divided into soft pens and hard pens. Pencils and fountain pens are hard pens. Brushes and brush pens are soft pens. Especially brushes in professional painting, most of them are soft pens, such as Western oil paint brushes. 1. Chinese traditional painting brushes are all drawn with soft brushes, and most of the famous paintings and calligraphy works are done with soft brushes. With the development of electronic informatization, handwriting boards, drawing boards, and stylus pens have begun to be used in handwritten character input, art painting, education, medical care, and various professional fields on computers. But at present, all stylus used in conjunction with drawing boards and handwriting boards belong to the hard pen category, such as the products of Japan's WACOM company and domestic Hanwang company. In terms of the touch of the pen, they cannot truly simulate the feeling of using an actual soft pen. In practical applications, especially in painting and calligraphy, soft pens are mostly used, and there is no computer input stylus with a real pressure touch and a soft nib at present.

Contents of the invention

The technical problem to be solved by the present invention is to provide a computer input stylus with a real pressure touch and a soft tip. This stylus not only has the pressure sensitivity of a hard tip stylus, but also has the real and natural soft tip feel.

The technical scheme adopted in the present invention is as follows: the nib and the sensor that conducts the deformation of the nib are included; the nib made of soft material that deforms during writing and whose deformation is proportional to the force of the pen is connected to the sensor.

The advantages and effects of the present invention are: naturally and truly simulating the characteristics of various soft pens in practical applications, not only can sensitively and delicately feel the pressure changes of pen movement, but also the pen tip will also produce natural deformation, which can realistically imitate the real soft pen The pen state is very conducive to creating natural and vivid paintings and calligraphy works.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a schematic diagram of the electronic soft pen proposed by the present invention.

Fig. 2 is a structural schematic diagram of the sensor and the pen head proposed by the present invention.

Fig. 3 is a structural schematic diagram of another sensor and pen head proposed by the present invention.

Fig. 4 is a structural schematic diagram of another sensor and pen head proposed by the present invention.

FIG. 5 is a schematic diagram of a resonant circuit of the inductor proposed by the present invention.

Description of drawings:

1. Pen body; 2. Pen head; 3. Guide rod; 4. Magnetic core; 5. Inductance coil; 6. Contact; 7. Elastic electrode; 8. Gasket; 9. Variable capacitor; 10. Inductor; 11. First dielectric substance; 12. Second dielectric substance; 13. First fixed electrode; 14. Second fixed electrode; 15. Isolation layer;

107. Elastic electrode A; 108. Gasket A; 109. Variable capacitor A; 111. Dielectric material A; 113. First fixed electrode A; 114. Second fixed electrode A;

207. Elastic electrode B; 208. Gasket B; 209. Variable capacitor B; 211. Dielectric material B; 213. First fixed electrode B; 214. Second fixed electrode B.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the device proposed by the present invention. The device is composed of a pen body 1 and a nib 2, the nib 2 is at the bottom of the pen body 1, and the sensor 10 is located in the pen body 1, and the sensor 10 senses the writing position of the pen 2 on the handwriting board and the change of the pressure, namely Sensing the position and pressure of the stylus.

Figure 2 is a preferred embodiment of the present invention. The inductor 10 includes a variable capacitor 9 , a contact 6 , a guide rod 3 , a magnetic core 4 , and an inductance coil 5 . The upper end of the guide rod 3 is embedded in the contact 6 , and the guide rod 3 passes through the magnetic core 4 . The nib 2 is located at the lower part of the pen body 1, the nib 2 is closely connected with the guide rod 3 of the sensor 10, the guide rod 3 passes through the magnetic core 4, the upper end of the guide rod 3 is embedded in the contact 6, the contact 6 is close to the elastic electrode 7, and the elastic electrode 7 is made of elastic material, connected to the same side of the first dielectric 11 and the second dielectric 12, the first dielectric 11 and the second dielectric 12 are placed side by side, the elastic electrode 7 and the first dielectric There is a spacer 8 to isolate between the substance 11 and the second dielectric 12, and the spacer 8 is a hollow ring, and the hollow part is air; the other side of the first dielectric 11 and the second dielectric 12 are connected to the first The fixed electrode 13 and the second fixed electrode 14, the first fixed electrode 13 and the second fixed electrode 14 are mirror-symmetrically placed; there is an isolation layer 15 between the first dielectric 11 and the second dielectric 12, and the dielectric of the isolation layer 15 The permittivity is small and close to air; the first dielectric 11 and the second dielectric 12 are made of materials with high permittivity, the first dielectric 11, the second dielectric 12 and the first The fixed electrode 13 and the second fixed electrode 14 form a variable capacitance. When pressed by the contact 6, the elastic electrode 7 elastically deforms and contacts with the first dielectric 11 and the second dielectric 12. The capacitance value between the fixed electrode 13 and the fixed electrode 14 is changed, and the more the contact area, the greater the change. In fact, this is formed by the first dielectric 11, the second dielectric 12 and the first fixed electrode 13. It forms a variable capacitance 9 with the second fixed electrode 14 and the elastic electrode 7. When the force applied to the contact 6 is greater, the deformation of the elastic electrode 7 is also greater. Between the elastic electrode 7 and the first dielectric The smaller the gap between the substance 11 and the second dielectric 12, the larger the contact surface will be, and the greater the capacitance change between the first fixed electrode 13 and the second fixed electrode 14 will be. , and vice versa.

The inductance coil 5 is wound on the magnetic core 4, and the inductance coil 5 and the magnetic core 4 form an inductance with excellent performance, and the leads of the inductance coil 5 are connected with the leads of the variable capacitor 9 to form a capacitive-inductive resonant circuit, as shown in Figure 5 . The working principle of the sensor is as follows: put the capacitive resonant circuit close to an oscillation source that can generate the same or similar oscillating signal, the capacitive resonant circuit generates resonance, and then use a signal detection circuit to detect the parameter change of the capacitive resonant circuit, get Determine the position and pressure of the tip 2 of the stylus. In this example, a signal source similar to the oscillating signal generated by the capacitive-sensing resonant circuit and a signal detection circuit are set in the tablet. When the signal generated by the capacitive-sensing resonant circuit changes, the stylus can be known through detection For example, by measuring the size of the resonance signal, the position of the nib can be known, and by measuring the phase difference between the resonance signal and the oscillation signal, the pressure can be known.

The nib 2 is made of soft material, such as elastic porous plastic, etc. When the user writes, the nib 2 will produce obvious deformation, and the deformation is proportional to the strength of writing, which is close to the state of soft pen writing. When the nib 2 is deformed, a force of the same magnitude and opposite direction will be generated, and the elastic electrode 7 will be deformed through the guide rod 3 and the contact 6 .

In addition to the above-mentioned embodiments, there are two other embodiments to illustrate the technical points of the present invention. The main difference lies in the difference of the variable capacitance in the inductor 10. In these two embodiments, the inductor 10 is also a capacitive sensor. Resonant circuit, only the composition of the variable capacitor is different. As shown in FIG. 3 , the variable capacitor A109 is composed of a dielectric A111 , a first fixed electrode A113 , a second fixed electrode A114 , an elastic electrode A107 , and a spacer A108 ; the spacer A108 is the same as the spacer 8 . The elastic electrode A107 is vertically connected to the first fixed electrode A113, and the second fixed electrode A114 is arranged on the dielectric A111. When the elastic electrode A107 is not under pressure, there is a gasket A108 between the elastic electrode A107 and the dielectric A111. The capacitance value Very large, when the elastic electrode A107 is pressed, the gap between the elastic electrode A107 and the dielectric A111 disappears, the contact surface increases, and the capacitance between the first fixed electrode A113 and the second fixed electrode A114 also increases .

Similarly, as shown in FIG. 4 is another embodiment of the present invention, the structure is basically the same as the previous embodiment, the difference is that the first fixed electrode B213 and the second fixed electrode B214 of the variable capacitor B209 are on the same side of the dielectric B211 side, and the elastic electrode B207 is on the other side of the dielectric B211. When the elastic electrode B207 is subjected to an external force, it is in contact with the dielectric B211. As the contact area changes, the capacitance between the first fixed electrode B213 and the second fixed electrode B214 is also changing.

In addition, for the change of the shape and cross-section of the nib, there can be many kinds, such as flat shape, row brush shape, etc., which can also realize the above-mentioned functions and achieve the same performance.

The device of the invention can naturally and truly simulate the characteristics of various soft pens in practical applications, and is equipped with calligraphy copying software, which can make traditional calligraphy more convenient and tidy, and is conducive to creating natural and vivid paintings and calligraphy works. The device of the present invention provides a kind of intelligent electronic soft pen product that can approach the real state of the soft pen for professional painters, calligraphy lovers, and schools. The painters can achieve the real state of the soft pen through the computer when they are engaged in painting work. Calligraphy, a precious treasure, can also be developed and carried forward in the age of information development, and promote the promotion and development of calligraphy education.

Claims (10)

1, a kind of electronic soft pen that is used for the computing machine typing is made of handwriting, the nib of writing on handwriting pad, inductor, and inductor is positioned at handwriting, it is characterized in that: comprise nib (2) and conduct the inductor (10) of written deformation; Be formed in by flexible material and can produce deformation and deformation size when writing and nib (2) that the writing physical strength size is directly proportional is connected with inductor (10).

2, electronic soft pen as claimed in claim 1, it is characterized in that: inductor (10) is made up of variable capacitance (9), contact (6), guide rod (3), magnetic core (4), telefault (5), the upper end of guide rod (3) embeds contact (6), and guide rod (3) passes magnetic core (4), and telefault (5) is wrapped on the magnetic core (4); Variable capacitance (9) and telefault (5) constitute to hold feels resonant circuit.

3, electronic soft pen as claimed in claim 2 is characterized in that: the guide rod (3) in the inductor (10) is connected with nib (2).

4, electronic soft pen as claimed in claim 2 is characterized in that: the variable capacitance (9) in the inductor (10) is made up of first dielectric medium (11), second dielectric medium (12), first fixed electorde (13), second fixed electorde (14) and an elastic electrode (7); First fixed electorde (13) and second fixed electorde (14) mirror image symmetry are connected the same side of first dielectric medium (11) and second dielectric medium (12); Elastic electrode (7) is connected the opposite side of first dielectric medium (11) and second dielectric medium (12).

5, electronic soft pen as claimed in claim 2 is characterized in that: the variable capacitance A (109) in the inductor (10) is made up of dielectric medium A (111), the first fixed electorde A (113), the second fixed electorde A (114) and an elastic electrode A (107); Dielectric medium A (111) one sides connect the second fixed electorde A (114), and corresponding opposite side connects elastic electrode A (107); The first fixed electorde A (113) is connected the same side of elastic electrode A (107) and dielectric medium A (111).

6, electronic soft pen as claimed in claim 2 is characterized in that: the variable capacitance B (209) in the inductor (10) is made up of dielectric medium B (211), the first fixed electorde B (213), the second fixed electorde B (214) and an elastic electrode B (207); The first fixed electorde B (213) and second fixed electorde B (214) the mirror image symmetry are connected the same side of dielectric medium B (211), and elastic electrode B (207) is connected the opposite side of dielectric medium B (211).

7, electronic soft pen as claimed in claim 1 is characterized in that: nib (2) be shaped as down drops.

8, electronic soft pen as claimed in claim 1 is characterized in that: nib (2) be shaped as the row brush shape.

9, electronic soft pen as claimed in claim 1 is characterized in that: nib (2) be shaped as column.

10, electronic soft pen as claimed in claim 1 is characterized in that: the manufacturing materials of nib (2) is the porous plastic cement.

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