JPS58123132A - Crt display - Google Patents

Abstract

PURPOSE:To draw a picture with optical thickness by only the pressing force of a light pen as well as drawing by the brush by drawing the picture according to the strength of the pressing force of the light pen to a CRT screen. CONSTITUTION:The pressure output signal of the light pen 1 is converted by an A/D converting circuit 13 into a digital value (n), which is supplied to a start coordinate setting circuit 10, X coordinate adding circuit 11, and Y coordinate adding circuit 12 and also supplied to a coordinate deciding circuit 2. The coordinate deciding circuit 2 determines coordinates (X1, Y1) indicated by the light pen 1 at the timing of the photodetection signal (a) of the light pen 1. The coordinates (X1, Y1) are corrected by a coordinate correcting circuit 9 into coordinates (X2, Y2) right under the light pen 1. Even when the digital value (n) of the pressure signal PR of the light pen 1 varies and a current picture point changes, the start coordinate setting circuit 10 sets the coordinates (X2, Y2) so that the center point is right under the light pen 1 all the time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a CRT display device using a light ben and a digital μ-concave single image frame, and in particular, the invention relates to a CRT display device using a light bene and a digital μ-concave single image frame, and in particular, the invention relates to a CRT display device that uses a light beam and a digital μ-concave single image frame. The display thickness can be controlled by changing the writing area (
The present invention provides a CRT display device that enables

In general, in a CRT display device that conveniently uses a light ben,
When writing preset color information to the image memory at the coordinates specified by Light Ben.

Multi@ based on the "thickness" information set in advance as the coordinate center indicated by Light Ben! By writing for one sitting, it was possible to display "thick lines" and "busy lines" on the CRT. However, with this conventional method, it is not possible to display the image as if it were drawn with a brush that changes the "thickness" of the image as it is being drawn. The purpose of the invention is to eliminate this drawback and realize a display device that can change the thickness while drawing an image as if it were drawn with a brush. This will be explained in detail with reference. The first section is a block diagram showing the internal structure of a conventional CRT display device. SW) and light detection gogosha go 5 output. The coordinate determination circuit (2) receives the light sensor switch signal (S -'N) Z'0 ma°'N's detection signal a tail 5, and the light sensor (1) switches to the CRT?- at that timing. The specified coordinates (Xl, ¥1) are determined.This coordinate Lri'5
Due to the extension of the light receiving circuit inside the light vent (1) and the expansion of the light detection range, the coordinates are different from the coordinates directly below the light vent (1).
Coordinates (Xl, ¥2)K by Zahara correction concavity (9)? f!
After i is corrected, the image memory (5i position 411W! becomes a fixed value.Meanwhile, by specifying a specific area with the foot pen (1),
Alternatively, color information set in advance by a control key or the like is generated by a color code generation circuit (3) and stored in a color register (4). During the horizontal blanking period, the coordinates (Xl, -f) of the image memory (5)
2), the contents of the color register (4) are written to the coordinates indicated by the light ben (1). When the horizontal blanking period ends and the W image display period begins, the contents of the image menu (5) are sequentially read out from addresses (Ll, Ll) and sent to the D/A conversion circuit (6). , B. After being converted into an analog signal, the amplifier circuit (7
)'ff-Street CRT (81) and displayed.

With this configuration, the color information is only input to the coordinates specified by Wide Ben, and you cannot freely make the lines thicker or thinner as if you were drawing with a brush.

This drawback has been solved by the present invention shown in FIG. 2, that is, the coordinate determining circuit (2) to the CRT+811 has the same function as that shown in FIG. Light Ben (1) has the function of outputting light detection signals (a) '(r) and Light Ben (1)
It has a function of outputting an analog output (PR) according to the pressing force on the CRT (81 circle).

Here, as a method to obtain analog deba (PR) according to the pressure on the CRT f81 screen of Light Ben (1),
The tip of the light ben (1) can be moved in the direction of the inside of the light ben (1) by using a pressure sensor, or the tip of the light ben (1) can be moved in the direction of the inside of the light ben (1) according to the pressure applied to the screen. It is also possible to use a system in which the moving distance is extracted as an analog air signal.An example of a specific configuration is Japanese Patent Application No. 56-69630, generally filed by the applicant of the present patent.

The pressure output signal (1?R) of the light ben (1) is switched to the digital μ value wholesaler by the A/shift concave circuit U, the start coordinate setting circuit αG, the X coordinate addition circuit, and the Y coordinate addition circuit (6 ) and when (n\0), coordinate determination time IIl! +2
1, the coordinate determination circuit (2) determines the coordinates (Xt, 'f1) indicated by the Phytoben (1) according to the timing of the light detection signal (at) of the Light Ben (1) when (n\0).
) to determine Pisces $1 (Xl-Yt) is the coordinate correction time 11
12) (By 91, the coordinates directly below Light Ben (1) (Xl
.

Y2) will be corrected to start coordinate setting L! ! I connection (1 (l
はrai) Hen (1) Orl” force [i (P R) (
D digit A/11] 1CnJ.

Even if the value changes and the pixel changes at that time, the L
) point is below Light Ben C1)1 coordinates (Xl-\
2) Set as below.

X row Xz n/2 Y o = Y 2-n/2
Decide first.

X=Xo+, R; :R=Q, 1.2, ------
nY=Yo+# ; #=O-1-2--n This coordinate (], Y) All combinations of I go R-J (n , Y) writes the contents of the color register (4).
) is read out and displayed on v RT ts+. The procedure is the same as the conventional example shown in FIG.

FIG. 5 shows an example of how the present invention is incorporated into the image system. In the figure, the coordinates (Xl, Yl) are the coordinates indicated by the light ben (1), the coordinates (Xl, Y2) are corrected to be directly under the light ben (1), and the rectangular area is a constant a defined by the pressure of the site ben. Write 1 to the scream memory (5) according to (n)
Indicates the area where the

The present invention is based on the above description. ! ! It is configured so that if you press it hard against one surface, it will be thicker, and if you press it weakly, it will make the artist's drawing φ, so it is possible to draw an image with any thickness just by using the pressing force of the light bend, just like when drawing with a brush. There is a fierce battle to create highly practical display devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an overview of a conventional CR1 display device, FIG. 2 is a block diagram showing a direct configuration of a CRT display according to the present invention, and FIG. 5 is an enlarged front view of a CRT screen. (
11 is a light vent, (2) is a coordinate determination circuit, C4) is a color register, (5) is an image memory, (8) is a CRT,
111103! People are showing ζzabe addition (8) connection.

Claims (1)

[Claims] 1) A CI (T) for displaying images, which includes a writable image memory and a phytoben, and displays the contents of the image memory in a writing area allocated to one side of the CRT11!! Display C
In the RT display device, an image memo IJ [writing means for writing the contents of the color register in which color information is stored] at the coordinates specified by the light ben. A pressure detection means for detecting the pressure of pressing the phytoben against the CRT II surface, and a coordinate 1r specified by the light ben for a predetermined number of times according to the pressure detected by the moromi detection means.
A CRT display device comprising: means for sequentially changing.