JPH0689125A - Computer with screen display and inputting device - Google Patents

Abstract

PURPOSE:To provide a convenient handwriting input computer in which a load on the eyes of an operator can be reduced. CONSTITUTION:A projection type display means equipped with a light source system 24, display liquid crystal element 21, and image formation system 25 is adopted for the display of picture information so that a constitution similar to a liquid crystal projection type television can be obtained. On the other hand, a handwriting input is equipped with a means which fetches the information of an input pen 30 whose top end flashes to a computer 10 as the picture information by the image formation system 25 similar to a television camera and a screen information inputting element 22 constituted of an image pickup element, on the screen projected on the projection type display means. The computer 10 is constituted of a picture information recognizing means 15, display liquid crystal element driving means 14, focusing mechanism driving means 15, auxiliary display screen 12, keyboard 13, and central processing unit 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer having improved usability for handwriting input.

[0002]

2. Description of the Related Art Conventionally, in a computer capable of handwriting input, an input screen and a display screen are made to be the same screen and the usability thereof is improved.
There is a graphic input device of 161720. In this example, when the liquid crystal display plate and the coordinate detection device are integrated and the writing pen is moved on the liquid crystal display plate, the position coordinate of the writing pen is detected by the coordinate detection device, and at the same time, the liquid crystal area directly below the writing pen is displayed. Retained.

[0003]

However, in the above-mentioned conventional handwriting input computer, the input work must be performed while directly looking at the direct light of the liquid crystal display, which puts a strain on the operator's eyes.

It is an object of the present invention to provide a handwriting input computer which is easy on the user's eyes and easy to use.

[0005]

In order to achieve the above object, the present invention comprises a light source system, a display liquid crystal element, and an image forming system for displaying image information so as to have a structure similar to that of a liquid crystal projection television. The projection type display means is adopted. On the other hand, in the case of handwriting input, on the screen projected by the above projection type display means, an input pen whose tip blinks is input to a computer as image information by a screen information input device including an image forming system and an image sensor similar to a television camera. It consists of a means to take in. The computer comprises image information recognition means, display liquid crystal element drive means, focusing mechanism drive means, auxiliary display screen, keyboard and central processing unit.

[0006]

The above structure has the following functions. By adopting the projection type display means similar to the liquid crystal projection type television for displaying the image information, the operator sees the indirect light projected and displayed, and the burden on the eyes is reduced. Further, since the handwriting input is performed by using the same means as that of the television camera, the coordinate detecting device required in the conventional example becomes unnecessary. Further, the position of the input pen tip on the display screen can be recognized by the image information recognizing means linked with the computer.

[0007]

Embodiments of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a configuration diagram for explaining the operation thereof. In both figures, 20 is a screen information display and input head,
Screen information input element 22, display liquid crystal element 21, light source system 2
4, a focusing mechanism 23, an image forming system 25, and a half mirror 26. Reference numeral 27 is a flexible arm for supporting the screen information display / input head 20.
Reference numeral 10 denotes a computer, which comprises a central processing unit 11 having a keyboard 13 and an auxiliary display screen 12, a screen information recognizing means 15, a display liquid crystal element driving means 1
4. The focusing mechanism drive means 16 is also included. An input pen 30 has a line type switching button 31. Four
Reference numeral 0 is a screen information display / input board.

The contents of the present invention will be described below with reference to FIGS. First, markers A, B, C, and D indicating reference positions are provided at substantially corners of the screen information display / input board 40. These markers A, B, C, and D are arranged on the screen information display / input head 20, and the screen information input element 22 and the imaging system 25 Also, the focusing mechanism 23 reads the same principle as a television camera. The read markers A, B, C, and D are made identical by comparing the physical coordinate system with the coordinate system on the read image by the screen information recognition means 15 and the central processing unit 11 incorporated in the computer 10. Control. In order to make this control more complete, in the coordinate system on the read image, the marker A,
Display liquid crystal element driving means 14 at the reference positions of B, C and D,
Display liquid crystal element 21, light source system 24, focusing mechanism 2
3. The image forming system 25 projects a corner mark on the screen information display / input board 40 according to the principle of a liquid crystal projection television. The computer 10 further reads the markers A, B, C, D written in the physical coordinate system on the screen information display / input board 40 and the projected corner mark, and the read image is displayed so that they match each other. The coordinate system is corrected, and the corner marks are written on the physical coordinate system as markers A, B, C,
Match D. An image information input system including a screen information input device 22, an imaging system 25, and a focusing mechanism 23, a display liquid crystal device 21, a light source system 24, and a focusing mechanism 2.
3, the image forming system 25 and the focusing mechanism 23, which are shared by the image forming system 25 for image information projection, are the half mirror 2
Optically coupled at 6.

Next, the input pen 30 is used to input an arbitrary image. When the tip of the input pen 30 touches an arbitrary position on the screen information display / input board 40, the tip P emits light. The light spot at the tip portion P is read by the screen information display / input head 20, the physical coordinate system on the screen information display / input board 40 is calculated from the position on the read image, and the physical coordinate system is taken into the computer 10 and at the same time input pen 30
The input point is projected and displayed on the tip P of the. When the operator inputs the line segment by continuously inputting the input pen 30 on the screen information display / input board 40, the above-described point input processing is continuously performed. The line type such as the solid line, the broken line, the thick line, and the thin line is switched by switching the light emitting pattern of the tip portion P of the input pen 30, for example, the blinking cycle, with the line type switching button 31.
Further, it is possible to instruct image processing such as image erasing and coloring by the difference in the light emission pattern.

[0011]

As described above, according to the present invention, since the principle of the liquid crystal projection television and the television camera is adopted, the input surface and the display surface are the same screen, there is no parallax, and the operator is indirect. Since it sees the light, it has the effect of not burdening the eyes. Furthermore, there is no need to connect the screen information display / input board or input pen to the computer body with a cord, and there is no limit to the size of the screen information display / input board. An input computer can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a configuration diagram for explaining the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Computer, 11 ... Central processing unit, 12 ... Auxiliary display screen, 13 ... Keyboard, 14 ... Display liquid crystal element drive means, 15 ... Screen information recognition means, 16 ... Focusing mechanism drive means, 20 ... Screen information display also Input head, 21 ... Display liquid crystal element, 22 ... Screen information input element, 23 ... Focusing mechanism, 24 ... Light source system, 25 ... Imaging system, 26 ... Half mirror, 27 ... Flexible arm, 30 ... Input pen, 31 … Line type switching button, 40… Screen information display and input board.

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G06F 3/033 350 G 7165-5B

Claims (1)

[Claims] 1. A screen information display / input head having a screen information input device, a display liquid crystal device, a light source system, an imaging system having a focusing mechanism, and a half mirror, and controlling the screen information display / input head. Information processing means, display liquid crystal element driving means, focusing mechanism driving means and keyboard, a central processing unit equipped with an auxiliary display screen, and an input pen and a screen information display / input board whose tip blinks in several patterns. A computer with a screen display and an input device, characterized in that