JPS6268865A - Personal computer screen data output method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for outputting screen data of a personal computer, and particularly to a printing method for data output suitable for creating a color printing plate.

[Background of the invention]

When using a monochrome (black and white) printer to print out color TV screen data created on a conventional personal computer, a pattern corresponding to each hue is generated, and the screen data that has been painted in different colors is printed out in monochrome. Even when printed, the data was processed for identification purposes. However, when using this method to print color prints using the resulting print as an original plate, it is not possible to separate the colors of adjacent areas, so the method is The method used is to create a screen and print it out each time,
The drawback was that it was difficult to check the overall screen composition and color scheme. Another drawback was that it was difficult to mark markers for alignment under each hue.

[Purpose of the invention]

An object of the present invention is to provide a data output method for easily creating a plate/base for multi-plate printing from a color screen created on a personal computer.

[Summary of the invention]

In order to achieve this object, the present invention creates a multicolor printing block by printing out the dot while checking whether the hue data and brightness data of each dot of screen data match specified numerical values. It is characterized by

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the following figures. FIG. 1 shows a memory area for storing screen data, and this embodiment shows an example in which the memory is configured in units of 8 bits. FIG. 2 is a schematic diagram of a cathode ray tube screen for explaining the positions on the screen corresponding to each memory, and the screen is represented by a collection of small dots arranged vertically and horizontally. In the description of this embodiment, the horizontal direction on the screen is the X axis, the vertical direction is the y axis, and the hue data of each point is D (x).

y). In this example, X is 0
Since the case where y takes a value from 0 to 211 is described, one screen is composed of a total of 54.272 pieces of data. Of course, the vertical and horizontal division values may take various values other than those of this embodiment. The length of the hue data at each point changes depending on the number of types of colors to be expressed (the length of the bits that make up the data), but when trying to express the hue with 4 bits as in this example, the minimum bit Since the length is 4 bits, Figure 1 shows an example in which 8 bits, which are the constituent units of memory, are divided into 4 bits each, and each bit is divided into 4 bits, each representing the coordinate position and D(Q, 0).
, D (1,0), D (2,0)... like (
For example, D(0,0)=0000=0,
D(1,0)=0001=1, D(2,0)=1111
=15. FIG. 3 shows an example of a correspondence table between D values and hues.

However, when outputting the image data to a monochrome tone (black and white) printer, by specifying the output hue data in advance, it is possible to obtain image prints for each hue. For example, D=1 If you want to output only the hue of , that is, gray in the example in Figure 3, compare the data and do not print the point D(0,0), but print the point D(1,
The point 0) is printed, the point D (2,0) is not printed, and so on.

To explain this system in more detail, FIG. 4 shows a flowchart of an algorithm when these screen data are output according to prespecified color information. This method is divided into five blocks ■ to ■. Block ■ specifies the position of the alignment marker to be output for each print, and block ■ specifies the numerical value of the hue to be output (multiple combinations are also possible). , Block ■ checks whether each point data has the specified hue, and blocks ■
Then, the output is performed, and the marker output is performed in block (2). Examples of print outputs created using this method are shown in FIGS. 5 to 9.

Figure 5 shows the arrangement and value of screen display data D: X=12
, Y=8, and the value of D is expressed in lO base. In other words, this is an example where red, green, and blue areas are drawn on a light blue background.
Fig. 7. At this time, the hue specification value of the print data of block ■ in Figure 4 is set to D=11, and when comparing each point of the screen data, if the values match, that point is printed. The figure shows the middle of printing.
The figure shows a diagram that has been printed. As can be seen from FIG. 7, the area of D=5.9.13 is not printed. FIG. 8 similarly shows an example of printing in which D=5 was specified and the printout was performed.

If the prints made in this way are used as master plates for multi-plate printing, adjacent areas can also be colored separately, making it easy to create master plates for color printers. Also the fourth
Figure 9 shows an example of outputting markers for plate alignment using the blocks ■ and ■ in the figure. If you use this marker 6 for positioning and print on multiple plates, you can print in multiple colors with less color shift. become. Also, even when these output operations are performed, the contents of the memory do not change, so you can specify different hues for the 1st, 2nd, and 3rd editions to obtain print output, and the same position will be displayed on every edition. This has the advantage that the alignment marker 6 can be printed on the image.

〔Effect of the invention〕

According to the present invention, once the overall composition and color scheme are decided on the screen,
This has the great effect of allowing you to specify print colors while checking the adjacency of colors on the screen, making it extremely easy to create plates for multi-plate, multi-color printing.

[Brief explanation of drawings]

Fig. 1 is a diagram explaining the memory for storing screen data, Fig. 2 is a diagram of memory corresponding to the screen position, Fig. 3 is a diagram explaining hue and hue data, Fig. 4 is a diagram showing a flowchart, Fig. 5 9 to 9 are diagrams showing print output according to the present invention. 6... Alignment marker. Agent Patent Attorney Masaru Ogawa Otamine 1 Figure Tea 2 Mousticle 3 Figure

Claims (1)

[Claims] 1. Screen data created on a personal computer,
A screen data output method for a personal computer, characterized in that individual information or combination information of hue or brightness is compared with a predetermined numerical value of information, and only the portion corresponding to the numerical value is outputted to a printer.