CN207817663U - writing device and touch system - Google Patents

Abstract

A writing instrument includes a conductive barrel, a nib, and conductive ink. The conductive pen barrel contains erasable conductive ink. The conductive ink is electrically connected with the conductive pen tube. At least the part of the outer side of the conductive pen tube, which is contacted with a user, is a conductor. The pen head is connected with the conductive pen tube. The pen point is suitable for outputting conductive ink to the writing surface and forming solid handwriting on the writing surface. When the pen point contacts the writing surface, the writing surface generates a signal. The utility model also provides a touch-control system, it includes the writing surface and at least one writing device. The utility model provides a write the device and including the touch-control system who writes the device can make the writing surface produce the signal when forming the entity handwriting on the writing surface.

Description

Writing device and touch system

technical field

The utility model relates to a writing device and a touch control system, in particular to a writing device and a touch control system with conductive ink contained in a pen tube.

Background technique

The appearance rate of panels with touch function in the market is increasing year by year. Many products such as mobile phones, tablet computers, car panels, electronic whiteboards, etc. combine the technology of touch panels, so that touch objects (such as fingers or touch screens) pen) on the panel can be converted into track information stored in the hardware.

At present, a writing device in which a conductive touch head is covered on an ink pen is proposed. When the ink pen leaves ink marks on the writing surface, the conductive touch head will also touch the writing surface and generate a touch signal. However, the conductive touch head covered on the ink pen may wear the physical ink marks written by the ink pen on the writing surface, causing inconvenience in the use of the writing device. Therefore, there is an urgent need for technologies capable of solving the aforementioned problems.

Utility model content

The utility model provides a writing device, which can make the writing surface generate signals while forming physical handwriting on the writing surface.

The utility model provides a touch control system including a writing device. The writing device can generate a signal on the writing surface while forming physical handwriting on the writing surface.

In at least one embodiment of the present invention, the writing device includes a conductive pen tube, a pen tip and conductive ink. The conductive barrel contains conductive ink that can be wiped off. The conductive ink is electrically connected with the conductive pen tube. At least the part of the outer side of the conductive pen tube that is in contact with the user is a conductor. The nib is connected with the conductive pen tube. The nib is used to output conductive ink to the writing surface and form physical handwriting on the writing surface. When the nib touches the writing surface, the writing surface generates a signal.

In at least one embodiment of the present invention, the touch system includes a writing surface and at least one writing device. The writing device includes a conductive pen tube, conductive ink and a nib. The conductive barrel contains conductive ink that can be wiped off. The conductive ink is electrically connected with the conductive pen tube. At least the part of the outer side of the conductive pen tube that is in contact with the user is a conductor. The nib is connected with the conductive pen tube. The nib is used to output conductive ink to the writing surface and form physical handwriting on the writing surface. When the nib touches the writing surface, the writing surface generates a signal.

At least one object of the present invention is to enable the writing surface to generate a signal when a writing device containing conductive ink touches the writing surface.

At least one purpose of the present invention is to improve the convenience of the writing device in use.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with accompanying drawings.

Description of drawings

1A and 1B are schematic diagrams of a writing device according to an embodiment of the present invention.

2A and 2B are schematic diagrams of a wiping device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a touch control system according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a touch control system according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch control system according to an embodiment of the present invention.

Detailed ways

1A and 1B are schematic diagrams of a writing device according to an embodiment of the present invention.

Please refer to FIG. 1A and FIG. 1B , the writing device 100 is used for a writing surface with a capacitive touch function. The writing surface, for example, uses a projected capacitive touch technology (Projected Capacitive Touch, PCT). The writing device 100 is, for example, used for the writing surface 300 shown in FIG. 3 , and the details will be described later. The writing device 100 includes a conductive pen tube 110 , a pen tip 120 and erasable conductive ink.

The conductive pen tube 110 contains conductive ink that can be wiped off. The aforesaid erasable conductive ink, for example, means that the conductive ink can be wiped off the writing surface directly in a general way (for example directly wiping with an eraser or a rag) without using organic solvents or other cleaning agents. The conductivity of the conductive ink (ie resistivity, measured in Ω·m) is, for example, 0Ω·m˜35KΩ·m. The material of the conductive ink includes, for example, a volatile organic solvent and a colorant, wherein the volatile organic solvent is, for example, ethanol, and the colorant, for example, is a pigment or a dye, which contains a compound that is soluble in water and makes the aqueous solution conductive, such as a trace amount Salts (such as NaCl, C ₆ H ₈ O ₇ (citric acid)), sugar...etc. Generally speaking, the setting of the conductivity coefficient of the conductive ink is achieved by adjusting the ratio of the volatile organic solvent and the colorant, so as to achieve the effect of generating signals on the writing surface with the capacitive touch function.

At least the part of the outer side of the conductive pen tube 110 that is in contact with the user is a conductor. In some embodiments, the conductive pen barrel 110 may include conductive paint or conductive stickers on the surface to increase the overall conductivity and aesthetics of the writing device 100 .

The conductive ink is electrically connected to the conductive pen tube 110 . The user is electrically connected with the conductive ink through the conductive pen tube 110 . The pen tip 120 is suitable for outputting conductive ink onto the writing surface and forming physical handwriting on the writing surface. When the pen tip 120 touches the writing surface, physical handwriting is formed on the writing surface, and the position of the writing surface touched by the pen tip 120 produces a capacitance change to form a signal. The conductivity coefficient of the conductive pen tube 110 and the conductivity coefficient of the conductive ink will affect the signal intensity generated by the writing surface when the pen tip 120 touches the writing surface.

The pen head 120 is connected with the conductive pen tube 110 . The material of the nib 120 can be the material of the nib of a general whiteboard marker, such as cotton core or other similar materials. In some embodiments, tip 120 includes a non-conductor. When the tip 120 touches the writing surface, the writing surface is electrically connected to the conductive pen tube 110 through the conductive ink. In some embodiments, the tip 120 includes a conductor, and the conductivity of the tip 120 will affect the strength of the signal generated by the writing surface when the tip 120 touches the writing surface. In some embodiments, for example, the ink absorption, shape and size of the pen tip 120 will affect the signal strength generated by the writing surface when the pen tip 120 touches the writing surface. Wherein, further speaking, the shape and size of the nib 120 (for example, a width of 3 mm to 22 mm) will affect the contact area between the nib 120 and the writing surface, and the contact area between the nib 120 and the writing surface will affect the nib 120. When touching the writing surface, the signal strength generated by the writing surface, therefore, the shape and size of the nib 120 will affect the signal strength generated by the writing surface when the nib 120 touches the writing surface. In some embodiments, the pen head 120 is detachable, and can be combined with or separated from the conductive pen tube 110 .

The nib 120 can absorb conductive ink from the conductive pen tube 110, and the conductive ink can desorb (detach) from the nib 120 and leave physical handwriting on the writing surface. The principle is the same. In some embodiments, the nib 120 will be deformed after being squeezed, however, the deformed nib 120 can still retain the function of leaving physical handwriting on the writing surface. In this embodiment, the writing device 100 can generate signals on the writing surface without additionally adding a stylus cover. Therefore, the probability of the physical ink handwriting written on the writing surface by the nib 120 of the writing device 100 being worn can be reduced. This improves the convenience of using the writing device 100 .

In some embodiments, the writing device 100 further includes a back cover 140 , and the nib 120 and the back cover 140 are respectively connected to opposite ends of the conductive pen tube 110 . The back cover 140 is, for example, detachable and can be combined with or separated from the conductive pen tube 110 . After the back cover 140 is separated from the conductive pen tube 110 , the conductive ink can be replenished in the conductive pen tube 110 . In some embodiments, the material of the back cover 140 includes conductors.

In some embodiments, the conductive ink can flow in the conductive pen tube 110 and form various forms of signal conducting networks with the pen head 120 , the internal structure of the conductive pen tube 110 and/or the back cover 140 .

In some embodiments, when the writing device 100 touches the writing surface, it will cause the writing surface to produce a predetermined capacitance change to form a signal with a predetermined intensity range. The predetermined intensity range depends on the conductivity of each component in the writing device 100 and the conductive ink. It depends on the conductivity, and the ink absorption and size of the pen head 120 . Different types of writing devices 100 may have different predetermined intensity intervals due to different capacitance change values. Therefore, the type of writing device 100 touching the writing surface can be identified by the strength of the signal generated by the writing surface. The content of the conductive ink in the conductive pen tube 110 will affect the strength of the signal generated by the writing surface. In some embodiments, the predetermined strength interval of the signal of the writing device 100 of the same type covers the signal strength when the conductive pen tube 110 is filled with conductive ink and the signal strength when the conductive ink in the conductive pen tube 110 is just used up, But the utility model is not limited thereto.

In some embodiments, the writing device 100 further includes an identification code 150, for example, the identification code 150 is used in radio frequency identification (Radio Frequency Identification, RFID) technology. The identification code 150 is disposed on the conductive pen tube 110 . In addition to identifying the type of the writing device 100 touching the writing surface by the strength of the signal generated by the writing surface, the identification code 150 can also be read by an identification code reader to identify the type of the writing device 100 .

In some embodiments, the writing device 100 optionally further includes a cap 130 . When the writing device 100 is not in use, the pen cap 130 can cover the nib 120 so that the conductive ink will not be lost due to volatilization.

2A and 2B are schematic diagrams of a wiping device according to an embodiment of the present invention.

Please refer to FIG. 2A and FIG. 2B , the wiping device 200 is used for a writing surface with a capacitive touch function. The wiping device 200 includes a housing 210 , a plurality of sensing elements 250 and a wiping body 220 . The wiping device 200 is used, for example, in the writing surface 300 shown in FIG. 3 , and the details will be described later.

The housing 210 includes a conductive material. The geometric shape of the housing 210 can be adjusted according to requirements, such as square, rectangular, circular, other geometric shapes, a combination of various geometric shapes, or a shape that is convenient for the user to hold.

In one embodiment, the casing 210 includes magnetic materials or non-magnetic materials. When both the casing 210 and the writing surface are magnetic, the wiping surface 200a of the wiping device 200 can be made more parallel to the The writing surface improves the misinterpretation of the writing surface caused by the uneven force applied by the user when wiping.

The sensing elements 250 include conductive materials and are electrically connected to the casing 210 respectively. In this embodiment, the wiping device 200 includes a connecting piece 240, through which the sensing element 250 is electrically connected to the housing 210, and the number of connecting pieces 240 is the same as that of the sensing element 250 shown in FIG. The number, that is, each sensing element 250 is electrically connected to the housing 210 through the corresponding connecting element 240 , but the present invention is not limited thereto.

Each sensing element 250 is separated from each other. The distance between the induction elements 250 is greater than 1.5 cm, for example. When the wiping device 200 touches the writing surface, the writing surface will sense at least two of the sensing elements 250 to make the writing surface generate a wiping function command. In some embodiments, there may be more than three sensing elements 250 to make the writing surface generate a wiping function command. The arrangement position, quantity, geometric shape and conductivity of the sensing element 250 can be adjusted according to the change requirement of the capacitance value. The sensing element 250 includes, for example, a capacitive sensing sheet. However, the present invention does not limit the sensing element 250 to be in the shape of a sheet, and the sensing element 250 may be in any geometric shape.

In some embodiments, at least one of the sensing elements 250 has a different shape from the other sensing elements 250 , especially the geometry of the sensing element 250 near the wiping surface 200 a. Since the sensing elements 250 of different shapes can generate different touch signals (such as touch signals with different intensities) on the writing surface, the relative positions of the sensing elements 250 of different geometric shapes can be determined from the change of the capacitance value. Then, the wiping displacement, wiping displacement angle, wiping rotation angle and/or wiping pressure release stress of the wiping device 200 are calculated by using trigonometric functions and differential integral functions.

In some embodiments, at least one of the sensing elements 250 has a different conductivity from the other sensing elements 250 . Since the sensing elements 250 with different conductivity can cause the writing surface to generate different touch signals (such as touch signals with different intensities), the relative position of the sensing elements 250 with different conductivity values can be judged from the change of the capacitance value, and then apply The trigonometric function and the differential-integral function calculate the wiping displacement, wiping displacement angle, wiping rotation angle and/or wiping pressure release stress of the wiping device 200 .

In one embodiment, the induction element 250 includes magnetic material or non-magnetic material. When both the induction element 250 and the writing surface are magnetic, the wiping surface 200a of the wiping device 200 can be more parallel to the The writing surface improves the misinterpretation of the writing surface caused by the uneven force applied by the user when wiping.

The wiping body 220 is located on the sensing element 250 . The wiping body 220 is used for wiping physical handwriting on the writing surface, such as ink handwriting or other pigment handwriting. At least part of the wiper body 220 includes an insulating material. In this embodiment, the entire wiping body 220 is made of insulating material, but the present invention is not limited thereto. In some embodiments, the portion of the wiping body 220 corresponding to the sensing element 250 may include conductive material while the portion not corresponding to the sensing element 250 is an insulating material. The conductive materials on the wiping body 220 are, for example, separated from each other, so that when the wiping device 200 contacts the writing surface, signals (or separated signals) at different positions can be generated by the sensing element 250 and the part of the wiping body 220 corresponding to the sensing element 250, to enable the wipe function command. In some embodiments, the wiping device 200 includes a replaceable wiping body 220 , so that the wiping body 220 is easy to clean, replace and maintain.

In one embodiment, the wiping body 220 includes a magnetic material or a non-magnetic material. When the wiping body 220 and the writing surface are both magnetic, the wiping surface 200a of the wiping device 200 can be made more parallel to the The writing surface improves the misinterpretation of the writing surface caused by the uneven force applied by the user when wiping.

The wiping device 200 may optionally include an electrical isolator 230 . The electrical isolator 230 is located between the housing 210 and the wiping body 220 . In this embodiment, the electrical isolator 230 is disposed between the sensing element 250 and the casing 210, so that the sensing element 250 can only be electrically connected to the casing 210 through the connecting element 240, and the wiping body 220 can cover the sensing element. 250 and an electrical isolator 230. The sensing element 250 generates a touch signal on the writing surface through the wiping body 220 . Wherein, when the wiping device 200 is in contact with the writing surface, at least two of the inductive elements 250 will cause the writing surface to generate a touch signal to start the wiping function command, and then the wiping device 200 can wipe the physical handwriting (ie ink handwriting) on the writing surface, At the same time, the electronic handwriting corresponding to the physical handwriting is deleted according to the wiping function instruction.

In some embodiments, the electrical isolation member 230 includes a buffer isolation material, and the electrical isolation member 230 has a soft property, for example. The electrical isolator 230 can change its shape and posture according to the posture of the user, so as to maintain the angle between the wiping device 200 and the writing surface. In some embodiments, the closer the wiping device 200 is to the writing surface, the more parallel the sensing element 250 in the wiping device 200 is to the writing surface, and the writing surface can better detect the correct position of the sensing element 250 . In some embodiments, the thickness of the electrical isolation member 230 is greater than 1 cm, so as to effectively isolate the casing 210 from improper induction of the writing surface.

In one embodiment, the electrical isolator 230 includes a magnetic material or a non-magnetic material. When both the electrical isolator 230 and the writing surface are magnetic, the wiping device 200 can be wiped by the principle of permanent magnet opposite sex attraction. The surface 200a is more parallel to the writing surface, so as to improve the misinterpretation of the writing surface caused by uneven force exerted by the user when wiping.

FIG. 3 is a schematic diagram of a touch control system according to an embodiment of the present invention. It must be noted here that the embodiment in FIG. 3 follows the component numbers and parts of the embodiment in FIG. 1A, FIG. 1B, FIG. 2A and FIG. Descriptions of the same technical contents are omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 3 , the touch control system 10 includes at least one writing device 100 , a wiping device 200 , a writing surface 300 , a computer device 400 , and an identification code reader 310 . When the tip of the writing device 100 touches the writing surface 300 , it leaves physical handwriting 300 a on the writing surface 300 and makes the writing surface 300 generate a signal.

The writing surface 300 has a capacitive touch function. The computer device 400 is electrically connected to the writing surface 300, and the signal generated by the writing surface 300 will be transmitted to the computer device 400. When the writing device 100 moves on the writing surface 300, the writing surface 300 will sense the moving track of the writing device 100 and generate a signal. , and the computer device 400 forms an electronic handwriting 400a corresponding to the moving track of the writing device 100 according to the signal generated by the writing surface 300 . The computer device 400 is, for example, a desktop computer, a notebook computer or other devices capable of generating images and receiving user input information.

In some embodiments, the touch control system 10 includes at least two writing devices 100 . The nibs of the at least two writing devices 100 have different sizes, and when the at least two writing devices 100 are in contact with the writing surface 300 , the writing surface 300 will generate different signal intensities. The computer device 400 distinguishes the types of the at least two writing devices 100 through different signal strengths.

In some embodiments, the touch control system 10 includes at least two writing devices 100 . The conductive tubes of the at least two writing devices 100 have different conductivity coefficients, and when the at least two writing devices 100 are in contact with the writing surface 300 , the writing surface 300 will generate different signal strengths. The computer device 400 distinguishes the types of the at least two writing devices 100 through different signal strengths.

In some embodiments, the touch control system 10 includes at least two writing devices 100 . The conductive inks of the at least two writing devices 100 have different conductivity coefficients, and when the at least two writing devices 100 are in contact with the writing surface 300 , the writing surface 300 will generate different signal intensities. The computer device 400 distinguishes the types of the at least two writing devices 100 through different signal strengths.

The identification code reader 310 is electrically connected to the computer device 400 . The identification code reader 310 is located within the range where the identification code of the writing device 100 can be read. For example, the identification code reader 310 can emit radio waves to touch the identification code of the writing device 100 , so that the identification code of the writing device 100 passively emits electromagnetic waves and responds to the identification code reader 310 . In some embodiments, the identification code reader 310 can read the electromagnetic waves actively emitted by the identification code of the writing device 100 . In some embodiments, the software in the computer device 400 can be set to instruct the identification code reader 310 to operate when the tip of the writing device 100 touches the writing surface 300 . The identification code reader 310 can transmit the information contained in the electromagnetic wave passively or actively emitted by the identification code to the computer device 400, and the above information can be processed and identified by the software in the computer device 400 to identify the writing device 100 kind of. When the nib of the writing device 100 touches the writing surface 300, in addition to identifying the type of the writing device 100 by the signal strength generated by the writing surface 300, the identification code of the writing device 100 can also be used to confirm the type of the writing device 100 touching the writing surface 300 .

In some embodiments, the computer device 400 can be electrically connected to the extension device 410 , and the extension device 410 includes tools for controlling the computer device 400 such as a keyboard, a mouse, a tablet, a drawing tablet, a touchpad, and keys.

FIG. 4 is a schematic diagram of a touch control system according to an embodiment of the present invention. It should be noted here that the embodiment in FIG. 4 follows the component numbers and parts of the content in the embodiment in FIG. 3 , wherein the same or similar numbers are used to indicate the same or similar components, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 4 , the writing surface 300 includes a touch device 330 and a reflective material layer 320 a on the touch device 330 . When the writing device 100 touches the writing surface 300 , it can leave physical ink marks on the reflective material layer 320 a, and the touch device 330 will generate a signal corresponding to the writing device 100 .

In this embodiment, the touch control system 10a further includes a projection device 500 . The projection device 500 is used to project an image frame on the reflective material layer 320a. The reflective material layer 320a may be, for example, a white reflective material layer for reflecting the image frame projected by the projection device 500 to a user (not shown). Therefore, the user can use the writing device 100 to write on the reflective material layer 320 a according to the image projected by the projection device 500 .

FIG. 5 is a schematic diagram of a touch control system according to an embodiment of the present invention. It should be noted here that the embodiment in FIG. 5 follows the component numbers and partial content of the embodiment in FIG. 3 , wherein the same or similar numbers are used to indicate the same or similar components, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 5 , the writing surface 300 includes a touch device 330 and a transparent material layer 320b on the touch device 330 . When the writing device 100 touches the writing surface 300 , it can leave physical ink marks on the transparent material layer 320 b, and the touch device 310 will generate a signal corresponding to the writing device 100 .

In this embodiment, the touch control system 10 b further includes a display device 600 . The touch device 310 is located between the display device 600 and the transparent material layer 320b. The picture displayed by the display device 600 may pass through the writing surface 300 . Therefore, the user can use the writing device 100 to write on the transparent material layer 320 b according to the picture displayed by the display device 600 .

In at least one embodiment of the present invention, when the writing device touches the writing surface, it can leave physical handwriting (ink writing) on the writing surface and make the writing surface generate a signal.

In at least one embodiment of the present invention, the probability of abrasion of the physical ink handwriting written by the nib on the writing surface can be reduced, thereby improving the convenience of using the writing device.

Although the present utility model has been disclosed above with the embodiments, it is not intended to limit the present utility model. Anyone skilled in the art may make some modifications and modifications without departing from the spirit and scope of the present utility model. The scope of protection of the utility model should be defined by the appended scope of patent application as the criterion.

Explanation of reference signs:

10, 10a, 10b: touch system

100: writing device

110: conductive pen tube

120: pen head

130: Pen cap

140: back cover

150: identification code

200: wiping device

200a: wipe surface

210: shell

220: wipe body

230: electrical isolator

240: connector

250: sensor

300: writing surface

310: Identification code reader

320a: Layer of reflective material

320b: transparent material layer

330: Touch device

400: Computer device

410: Expansion device

500: projection device

600: Display means.

Claims (20)

1. a kind of writing device, for the writing surface with capacitance touching control function, including：

Conductive pen tube contains the conductive ink that can be wiped off, the conductive ink and the conductive pen tube in the conduction pen tube It is electrically connected, and the part at least contacted with user on the outside of the conductive pen tube is conductor；And

Nib is connect with the conductive pen tube, wherein the nib is for exporting on the conductive ink to the writing surface simultaneously In formation entity person's handwriting on the writing surface, wherein

When the nib is contacted with the writing surface, the writing surface generates signal.

2. writing device according to claim 1, which is characterized in that the nib includes non-conductor.

3. writing device according to claim 1, which is characterized in that the nib includes conductor.

4. writing device according to claim 1, which is characterized in that further include rear cover, wherein it is described nib with it is described after Lid is separately connected the opposite both ends of the conductive pen tube.

5. writing device according to claim 4, which is characterized in that the rear cover includes conductor.

6. writing device according to claim 1, which is characterized in that further include identification code, be set to the conductive pen tube On.

7. a kind of touch-control system, including：

Writing surface；

An at least writing device, including：

Conductive pen tube contains the conductive ink that can be wiped off, the conductive ink and the conductive pen tube in the conduction pen tube It is electrically connected, and the part at least contacted with user on the outside of the conductive pen tube is conductor；And

Nib is connect with the conductive pen tube, wherein the nib is for exporting on the conductive ink to the writing surface simultaneously In formation entity person's handwriting on the writing surface, wherein

When the nib is contacted with the writing surface, the writing surface generates signal.

8. touch-control system according to claim 7, which is characterized in that the nib includes non-conductor.

9. touch-control system according to claim 7, which is characterized in that the nib includes conductor.

10. touch-control system according to claim 7, which is characterized in that the writing device further includes rear cover, wherein described It is written that the opposite both ends of the conductive pen tube are separately connected with the rear cover.

11. touch-control system according to claim 10, which is characterized in that the rear cover includes conductor.

12. touch-control system according to claim 7, which is characterized in that further include wiping arrangement, to wipe the writing off The entity person's handwriting on face.

13. touch-control system according to claim 12, which is characterized in that the wiping arrangement includes：

Shell, including conductive material；

The shell is electrically connected in multiple induction pieces, and the multiple induction pieces are disconnected from each other；And

Wiping body is located on the multiple induction pieces, and at least partly described wiping body includes insulating materials, wherein

When the wiping arrangement is contacted with the writing surface, at least the two makes the writing surface generate in the multiple induction pieces Wiping function instructs.

14. touch-control system according to claim 7, which is characterized in that further include computer installation, be electrically connected the book Face is write, and the computer installation generates electronic handwriting according to the signal.

15. touch-control system according to claim 14, which is characterized in that including at least two writing devices, it is described at least These described nibs of two kinds of writing devices are respectively provided with the size of difference, and at least two writing device be contacted with it is described Will produce the signal strength of difference when writing surface, the computer installation by the signal strength of the difference distinguish described at least Two kinds of writing devices.

16. touch-control system according to claim 14, which is characterized in that including at least two writing devices, it is described at least These described conductive pen tubes of two kinds of writing devices are respectively provided with the electrical conductivity of difference, and at least two writing device connects The signal strength that will produce difference when the writing surface is touched, the computer installation is distinguished by the signal strength of the difference At least two writing device.

17. touch-control system according to claim 14, which is characterized in that including at least two writing devices, it is described at least These described conductive inks of two kinds of writing devices are respectively provided with the electrical conductivity of difference, and at least two writing device connects The signal strength that will produce difference when the writing surface is touched, the computer installation is distinguished by the signal strength of the difference At least two writing device.

18. touch-control system according to claim 14, which is characterized in that further include：

Identification code is set in the conductive pen tube；And

Identification code reading machine is electrically connected the computer installation, and the identification code reading machine is described positioned at that can read In the position range of identification code, wherein

When the nib is contacted with the writing surface, the identification code reading machine reads the identification code, and passes through the meter The type of writing device described in calculation machine device identification.

19. touch-control system according to claim 7, which is characterized in that

The writing surface includes touch device and the layer of reflective material on the touch device, and the touch-control system is also Including：

Projection arrangement, to projected picture in the layer of reflective material.

20. touch-control system according to claim 7, which is characterized in that

The writing surface includes touch device and the transparent material layer on the touch device, and the touch-control system is also Including：

Display device, the touch device is between the display device and the transparent material layer.