JPS6118776B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scale superimposition display processing method on a figure, in particular, a scale superimposition display processing method on a figure, in which a scale is displayed superimposed on a figure so that down to one pixel on the figure can be indicated. This relates to a display processing method.

Conventionally, a light pen, tablet, or the like has been used to indicate a part of a figure on a display device. For this reason, there was no concept of superimposing a scale on a display figure to display it. Recently, consideration has been given to using commercial color TV receivers as display devices, but in this case, light pens,
The disadvantage of using a tablet or the like is that it adds significant additional functionality to the device, making it expensive. Moreover, even if a light pen or tablet is used, it is not easy to point out any one pixel of the displayed figure.

In order to eliminate the above-mentioned drawbacks, the present invention first enlarges and displays a figure, and then superimposes and displays a scale at a position corresponding to the boundary of each pixel of the figure before enlargement. The purpose of this invention is to allocate at least one pixel on the enlarged figure corresponding to the boundary and display the scale in a superimposed manner so that even one pixel on the figure can be specified. This will be explained in detail below using the drawings.

FIG. 1 is a diagram illustrating an aspect of enlargement according to the present invention. In Figure 1a, there is an X in the horizontal direction of the display screen.
If you add Y address vertically,
It is possible to specify any one pixel on the display screen by (X, Y). However, even if the display screen consists of 80 pixels horizontally by 60 pixels vertically, it is difficult to immediately designate pixel P as (17, 14), for example, by looking at the display screen. In Figure 1b, in order to specify the approximate position on the display screen, the number of vertical and horizontal pixels of the display screen is divided into 10 each, that is, every 6 pixels in the vertical direction and every 8 pixels in the horizontal direction. The scale is shown superimposed on the . The area divided by the scale (hereinafter referred to as block) is Q _i,j as shown in Figure 1b.
(i, j=1, 2, . . . , 9), indicating that the pixel P in FIG. _{1a is within the block Q 2,2 .} Figure 1c is 1 of Figure 1b
This is an enlarged display of two blocks and the scale is superimposed on the pixel correspondence in the block in the case of Figure 1 b.
An example is shown in which the pixels are enlarged to a size of 10 pixels horizontally and displayed on the sides of the display screen, but in the present invention, as will be described later in FIG. Figure 2a or Figure 2b by enlarging
It is displayed as shown in the figure. When enlarged, any pixel within one block becomes D _,n
(=1,2,...8, m=1,2,...6), and the block in Figure 1b
By enlarging and displaying Q ₂ and ₂ , it is shown that pixel P can be designated by block D ₁ and ₂ in the enlarged figure. That is, instead of directly specifying the coordinates (X, Y) of pixel P in FIG. 1a, it can be specified indirectly by specifying block Q _i,j and block D _,n . There is no problem even if you do it like this
This is clear from the relationship: =i×8+, Y=j×6+m.

In addition, in Fig. 1b, in order to maintain the shape of the figure even when it is enlarged, the vertical and horizontal magnifications are the same, and the scale is superimposed at each magnification of 1/the number of pixels in the vertical and horizontal directions of the display screen. It is done like this.

FIG. 2 is a diagram explaining an embodiment of the present invention.
The shape of the scale superimposed on the figure before enlargement shown in FIG. b and the figure after enlargement shown in FIG. 2 a or b is made the same. That is, the display interval of the scale is set to the magnification at which the figure is enlarged, and one pixel is enlarged and displayed to 6 pixels in the vertical direction and 8 pixels in the horizontal direction, and the scales are superimposed. D _,n in FIG. 2a represents the above-mentioned block. Figure 2b shows D on the display screen of Figure 2a.
_{, n} position horizontally by 1 block and vertically by 2
The blocks are moved in parallel so that the block Q _i,j specified before enlargement is placed near the center of the display screen when enlarged. The coordinate relationships at this time are X=i×8+-1 and Y=j×6+m-2. In either case of FIGS. 2a and 2b, in addition to the pixels included in the block Q _i,j specified before enlargement, the surrounding area can also be displayed on the display screen.

Above, we have talked about the shape of the scale superimposed on the figure, but it is also possible to give a specific color that is not used in the figure as the scale color, or to give a suitable color regardless of whether it is used in the figure and to superimpose the scale. When doing so, a logical operation such as an exclusive OR may be performed, or operability will be improved if the color of the scale is changed every nth line, for example every 5th line.

FIG. 3 shows an embodiment of the invention. In the figure, 1 is a synchronization signal generation section, 2 is a graphic display control section, 3 is a scale signal generation section, 4 is a synthesis section, 5 is a monitor, 6 is a pushphone, 7 is an enlargement control section, 301 is a counter, and 302 is a signal processing section. part, 303 is OR synthesis part,
304 represents a counter, and 305 represents a signal processing unit. The synchronization signal generator 1 generates various synchronization signals (clock signal, HD horizontal drive signal,
Generates VD: vertical drive signal, SC: subcarrier signal). The graphic display control section 2 is a section for displaying graphics on the monitor 5, and has various information necessary for displaying the graphics, which is read out repeatedly. The scale signal generator 3 generates a scale signal to be superimposed on the figure, and the counter 301 is a counter whose cycle is the horizontal magnification magnification or the vertical line scale interval m.
Every time the count is counted, the scale signal S ₁ is applied to the synthesis section 4 via the OR synthesis section 303, whereby the scale of the vertical line is proposed for every m pixels. The signal processing unit 302 expands the pulse width of the signal HD and guides the signal to the clear terminal of the counter 301 so that the first vertical line is displayed and the entire scale of the vertical line is displayed on the monitor 5. and only one clock period before the end of that signal.
A pulse signal is given to the OR synthesis section 303. Also,
The counter 304 is a counter whose period is 1/2 of the vertical enlargement magnification or horizontal line scale interval n, and every time the counter HD counts n/2, the scale signal S ₁ is sent to the synthesis unit 4 via the OR synthesis unit 303. Since the monitor 5 uses 2:1 interlaced scanning, this causes horizontal lines to appear every n pixels on the monitor.
Books (one book for each field) are displayed. This is to make the flicker of the horizontal line less noticeable, but since the horizontal line becomes thicker, if you want to make it thinner, you only need to display one field. The signal processing unit 305 expands the pulse width of the signal VD so that the first horizontal line is displayed and the entire scale of the horizontal line is displayed on the monitor 5, and guides the signal to the clear terminal of the counter 304. Before the end of the signal
A pulse signal is given to the OR synthesis unit 303 for one HD period to display the first horizontal line. The synthesis section 4 synthesizes the figure display signal from the figure display control section 2 and the scale display signal from the scale signal generation section 3, and
It outputs a signal, and the synthesis is a scale display signal.
A specific color code is given to _S1 , a logical operation is performed on the graphic display signal G, and the result is output. The pushphone 6 inputs the number (i, j) of the block Q _i,j to be enlarged,
The enlargement control section 7 enlarges and rewrites block Q _i,j or block Q _i,j and its surroundings out of the graphic information of the graphic display control section 2 by using the scale interval superimposed on the enlarged figure as a magnification factor. It is done like this.

FIG. 4 shows another embodiment of the invention. Parts with the same names and functions as in FIG. 3 are omitted, but 306 is a counter, 307 is a holding circuit, and 30
8 represents an OR synthesis unit, 309 a counter, and 310 a holding circuit. The counter 306 is an m-ary counter that counts the overflow pulses of the counter 301, and every m-count, the holding circuit 307 sends 1
The scale signal _S2 is applied to the synthesizer 4 through the OR synthesizer 308 only during the clock period. As a result, a scale signal _S2 indicating every m vertical lines can be obtained. Similarly, counter 309
is configured to count the overflow pulses of the counter 304 with an n-ary counter, and every time n counts, the scale signal S ₂ is applied to the combining unit 4 through the OR combining unit 308 to the holding circuit 310 for 1 HD period. As a result, a scale signal _S2 indicating every nth horizontal line can be obtained. The synthesis unit 4 gives the scale signal S ₂ a color code different from that of the scale signal S ₁ , performs a logical operation on the figure display signal from the figure display control unit 2, and outputs an NTSC signal. You can change the scale color for each.

As explained above, according to the present invention, when specifying any one pixel P of a figure, the scale is superimposed and displayed, and after specifying and enlarging the block including the pixel P, before enlarging it, Since the scale is superimposed and displayed so that each pixel can be identified, any pixel of the figure can be easily specified using a pushphone or a simple typewriter. Furthermore, even when giving instructions using a conventional device using a light pen, there is an advantage that operability is improved by displaying the scale in a superimposed manner. Furthermore, the hardware configuration for displaying the scale can be made common before and after enlargement.

[Brief explanation of the drawing]

Figures 1a, b, and c are diagrams for explaining the mode of expansion referred to in the present invention, Figures 2a and b are diagrams for explaining embodiments of the present invention, respectively, and Figures 3 and 4 are diagrams for explaining the embodiments of the present invention, respectively. An example is shown below. In the figure, 1 represents a synchronization signal generation section, 2 a graphic display control section, 3 a scale signal generation section, 4 a synthesis section, and 5 a monitor.

Claims (1)

[Claims] 1 In a graphic display system that is equipped with a display device that converts a graphic into an electrical signal and displays it, and that specifies and enlarges a part of the graphic, a scale is added to the original displayed graphic displayed on the display device. is superimposed and displayed, and on the enlarged display figure that specifies a part of the figure, at least one image is displayed on the enlarged figure corresponding to the boundary position between pixels of the original display figure. 1. A scale superimposition display processing method on a figure, characterized in that the same scale as the scale on the original display figure is superimposed and displayed.