KR20010106031A - Pen device for graphic tablet - Google Patents

Abstract

A method of manufacturing a multilayer thermoplastic resin sheet efficiently without breaking a foamed resin layer, and a multilayer thermoplastic resin sheet are disclosed. A two-layer thermoplastic resin sheet (24) is manufactured by bringing a thermoplastic resin film (19) into close contact with a heated metal endless belt (the surface roughness of which is Ra: not more than 0.5 mum) (15) or a heated roll (16), placing a foamed resin sheet (18) from a die (11) or a supply roll on the thermoplastic resin film (19), sandwiching the superposed thermoplastic resin film (19) and foamed resin sheet (18) between the belt (15) and roll (16), and pressing them flat. During this flat- pressing operation, the surface pressure is 0.05-1.00 MPa, and the surface pressure application time is 0.5-10.0 seconds.

Description

Pen device for graphic tablet {PEN DEVICE FOR GRAPHIC TABLET}

The present invention relates to a graphic tablet used to input precise location information by connecting to a personal computer or a CAD system, and more particularly, the user inputs the writing information exactly as intended, while visually confirming his or her handwriting state. It relates to a pen device for a graphics tablet that can be made.

Generally, a personal computer, a workstation, or a computer aided design system includes a keyboard and a mouse for inputting various kinds of information desired by a user. In this case, it is very cumbersome to use because it is necessary to input letters or symbols corresponding to the information desired by the user and to input information by clicking (Clik) various characters or symbols set in the software program. If you are not familiar with it, you may not only mistype the information, but also limit the information input to the preset characters or symbols. There was a difficulty to locate and click.

Meanwhile, with the advent of the multimedia era in recent years, if a user writes letters or sketches various shapes as if a worker writes on paper without a complicated keyboard or mouse as described above, they are recognized as it is and displayed on the monitor as input by the keyboard. There is an urgent need for a user convenience-oriented information input means.

Accordingly, for example, US Patent No. 5,763, 839 proposes a so-called graphic tablet which can accurately input the corresponding information while freely expressing any character or symbol desired by the user. It is equipped with a pen-type sensor (pencil) on the tablet, and when the operator who inputs the information grabs the sensor on the tablet and operates it, the cursor moves or writes at the corresponding coordinates simultaneously on the monitor to easily input any desired information. At this time, the operator does not need to see the sensor part visually, and only the writing action occurring on the monitor was possible to fully interactive work.

However, such a conventional graphic tablet, as shown in Figure 1, because the movement of the pen (P) can not only grasp indirectly through the monitor (M), the user can easily feel fatigue, as desired information There was a problem that it was difficult to input correctly. That is, since the pen P for a conventional graphic tablet does not have a nib, even if the information to be input on the tablet T is written, the information is only displayed on the monitor M by the coordinate signal transmitted from the tablet T. Since no trace appears on the tablet T, for example, when a relatively accurate coordinate input such as a graph is required during a chat, the input information can only be input while checking only on the monitor M. It is difficult to do.

The present invention has been made in view of the above-described conventional problems, and as described on a paper with a conventional writing implement, the inputted information is displayed on a tablet as it is, so that the inputted information can be accurately input to a personal computer or the like with the naked eye. It is an object of the present invention to provide a pen device for a graphic tablet.

1 is a perspective view schematically showing a problem of a conventional tablet,

2 is a cross-sectional view showing a pen device for a graphic tablet according to the present invention;

3 is a perspective view schematically showing a state of use of the pen device for graphic tablet according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

T: Tablet P: Pen Device

10: casing 12: cap (of casing)

20: nib 22: (nib) nib

23: (pen nib) Ink 30: Recognition switch

40: push pin 41: spring

50: position sensor 70: writing paper

In order to achieve the above object, a pen for a graphic tablet according to the present invention comprises: a casing in the form of a sleeve; A pen nib filled with ink and received inside the casing, the pen nib having one end protruding toward the front end of the casing; A recognition switch installed at a distance from the nib inside the casing and connected to the graphic tablet to recognize the input state; An actuating means which is movably supported in the casing and elastically biased so that one end is in contact with the rear end of the pen nib, and which operates the recognition switch by pushing the pen nib; Characterized in that the position sensor for detecting the electric field generated in the tablet.

According to one preferred feature of the present invention, the cap having the pen tip through-hole at the front end of the casing is detachably coupled so that the pen nib can be replaced as necessary.

According to another preferred feature of the invention, the writing paper is fixed on the tablet by the electrostatic attachment method or the clip holder provided in the tablet.

Accordingly, according to the present invention, information inputted on a monitor is displayed on a monitor as it is written on a paper using a conventional writing instrument, and the desired information is input to a terminal such as a personal computer while visually confirming the input information on a tablet. Since it is possible to input exactly as intended, it has a great effect on improving the reliability and ease of use of the graphic tablet.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

In FIG. 2, the pen device P for a graphic tablet according to the present invention includes a casing 10 in the form of a sleeve, a pen nib 20 accommodated inside the casing 10, and the pen nib 20. Recognition switch 30 for recognizing the information input state and the operation means for operating the recognition switch 30 in accordance with the push of the pen nib 20 when inputting information is installed in front of the push pin 40 and the casing 10 It is composed of a position sensor 50 for sensing the coordinate position by detecting the electric field generated by the tablet (T) during information input.

The casing 10 is composed of a body 11 accommodating each of the above elements therein, and a conical cap 12 screwed to the front end of the body 11 to prevent separation of the pen tip 20. As a result, a nib through hole 13 is formed in the center of the cap 12 so that the nib 22 of the nib 20 to be described later can protrude outward. In addition, the interior of the body 11 is partitioned into two parts, a front end portion 16 on which the pen core 20 is installed and a rear end portion 17 on which the recognition switch 30 is installed by the partition wall 14. 14, a support hole 15 into which the push pin 40 is fitted is formed.

The nib 20 is configured by coupling the nib 22 to the front end of the sleeve 21 in which the ink 23 is filled. The nib 22 properly protrudes outward through the nib through hole 13 formed in the cap 12 of the casing 11, and the nib 22 does not interfere with the sensing action of the position sensor 50. It is preferable that it consists of. The ink 23 may itself be filled in the sleeve 21, or may be filled in the sleeve 21 in a state of being impregnated with a medium such as a sponge or fiber.

Recognition switch 30 may be made of a conventional push switch or tact switch or piezo element because it only needs to detect the contact of the nib 20 to the tablet (T) at the time of information input and transmit the signal. In the case of the piezoelectric element, even the pressure applied to the pen nib 20 can be sensed, thereby expressing more natural input information. The recognition switch 30 is connected to the tablet (T) in a circuit via a cable (31).

The push pin 40 is movably coupled to the support hole 15 formed in the partition wall 14 of the casing 11 and elastically biased toward the nib 20 by the spring 41 to thereby nib 22 of the nib 20. ) Is projected out of the casing 11 and at the same time maintains a proper gap with the recognition switch 30. For this purpose, the front end of the push pin 40 should be in contact with the rear end of the nib 20. Preferably, the front end of the push pin 40 has a coupling protrusion 42 fitted to the sleeve 21 of the nib 20. Is provided. Then, the partition 14 to prevent the excessive pressure is applied to the recognition switch 30 due to excessive movement during information input at the proper position of the push pin 40 located at the front end portion 16 of the casing (11). A stopper 43 is provided to limit the rear movement of the push pin 40.

The position sensor 50 is configured by winding the coil 52 on the outer circumference of the ferrite core 51 installed at the front end 16 of the casing 11 so as to surround the sleeve 21 of the pen core 20. 52 is electrically connected to the tablet T via a cable 31.

On the other hand, on the tablet (T) is equipped with a writing paper 70 for inputting information using the pen device (P) of the present invention, such writing paper 70 is not shown separately, but a conventional electrostatic attachment method It may be fixed by, or as shown schematically in Figure 3 may be fixed to the tablet (T) provided with a clip holder 80.

The remaining 60 is a click switch for selecting a preset menu (not shown) on the tablet T or the monitor M. FIG.

Next, a method of using the pen apparatus P for a graphic tablet according to the present invention configured as described above will be described in parallel with FIG. 3.

First, as shown in FIG. 2, the writing paper 70 is attached and fixed on the tablet T, and then, while holding the pen device P, writing information to be input as if writing or sketching with a conventional writing instrument. It describes on the paper 70. At this time, when the nib 22 protruding out of the casing 11 comes into contact with the writing paper 70, the pen nib 20 is pushed backward while elastically deforming the spring 41, and thus is pressed. The pins 40 move together to be in close contact with the recognition switch 30 to operate the recognition switch 30. Then, the contact signal of the recognition switch 30 is transmitted to the tablet (T) and the information input possible state, the electric field is generated in the tablet (T).

In this state, if desired information is written on the writing paper 70, a change occurs in the electric field generated in the tablet T as the pen tip 22 moves, and the change in the electric field is applied to the pen device P. The installed position sensor 50 is detected and output. Then, the information input on the monitor M is displayed by the output electric signal. At this time, the writing paper 70 on the tablet T also leaks along the pen tip 22 by the ink 23. The input information is displayed as it is.

As such, the input information displayed on the monitor M and the writing paper 70 coincide with each other, so that the user U only needs to write the writing paper 70 on the tablet T without looking at the monitor M. Just watch and enter the information you want. Therefore, the user U can input information while checking his or her own input information with the naked eye through the writing paper 70 instead of the monitor M, thereby effectively suppressing fatigue, especially chatting on the Internet. Even when a graph requires accuracy, it is possible to input exactly as intended.

On the other hand, when the ink 23 of the pen nib 20 is exhausted by long term use, the cap 12 of the casing 10 may be removed and the nib 20 may be replaced with a new one.

The above embodiments are merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited to the illustrated embodiments, and may be appropriately changed within the scope of the same idea. For example, the shape and structure of each component shown in the embodiments of the present invention may be modified and implemented, it should be understood that changes, modifications or substitutions apparent to those skilled in the art are within the scope of the present invention.

As described above, according to the present invention, the pen device is provided with a pen nib which can be written, and the information inputted is displayed on the monitor and displayed on the tablet as it is written on a paper using a conventional writing instrument. While checking with the naked eye, it is possible to accurately input desired information into a terminal such as a personal computer as intended. In addition, the user can directly check his or her input information while looking at the pen device on the tablet, it is possible to effectively suppress the fatigue caused by the work.

Therefore, the present invention has a very excellent effect of greatly improving the reliability and ease of use of the graphics tablet.

Claims (5)

A pen apparatus for inputting arbitrary information into a terminal by operating on a graphic tablet connected to a terminal such as a personal computer, A casing in the form of a sleeve; A pen nib filled with ink and received inside the casing and having a nib at one end protruding toward the front end of the casing; A recognition switch installed in the casing at a distance from the nib and connected to the graphic tablet to recognize the input state; An actuating means which is movably supported in the casing and elastically biased so that one end is in contact with the rear end of the pen nib, and operates the recognition switch by pushing the pen nib; Pen device for a graphics tablet, characterized in that it comprises a position sensor for detecting the electric field generated in the tablet. The pen apparatus for a graphics tablet according to claim 1, wherein a cap having a pen tip through-hole at the front end of the casing is detachably coupled to exchange the pen nib. The pen apparatus for a graphic tablet according to claim 1, wherein the recognition switch comprises a piezo element or a push switch. The pen apparatus for a graphic tablet according to claim 1, wherein writing paper is mounted on the tablet. The pen apparatus of claim 4, wherein the paper is fixed on the tablet by a static electricity attaching method or a clip holder provided in the tablet.