JPH0579514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for controlling pattern printing, and particularly to a printing control method suitable for repeatedly printing continuous patterns such as ruled lines and halftone dots.

[Background of the invention]

Conventional pattern printing control methods include a method in which the basic pattern on the pattern memory is repeatedly used as it is, and a method in which each pattern whose starting dot row is each dot row of the basic pattern is stored in the pattern memory and the stored contents are used. is used. However, the former method has the drawback that the pattern may not be continuous depending on the pattern printing start position or when the pattern spans multiple lines, and the latter method has the drawback that the capacity of the pattern memory becomes large.

[Purpose of the invention]

The present invention stores one continuous minimum unit dot pattern in a pattern memory, and when printing a hatching pattern at multiple locations on printing paper, all dots from printing start position A to pattern development start position B are stored. By dividing the numbers M and N by the number of dots in the basic pattern and shifting the basic pattern according to the remaining number of dots, you can create continuous patterns of any size at any position by simply having the minimum basic pattern memory. Allows you to print patterns, and
To provide a pattern printing control method for a word processor in which a formula for calculating a shift amount is simple and constant regardless of the arbitrary pattern expansion start position B, and can be calculated quickly.

[Summary of the invention]

The object of the present invention is to store in a pattern memory a minimum unit dot pattern consisting of a predetermined number of continuous dots, etc., and to perform vertical dot patterns between the print start position and the start position of the dots, etc. on printing paper. Divide the number of dots in the direction by the number of dots above and below the minimum unit dot pattern in the vertical direction, and if a fraction occurs, shift the minimum unit dot pattern in the vertical direction by that fraction, and also do the printing start position and shading on the printing paper. The number of dots in the horizontal direction between the starting positions of To implement a pattern printing control method for a word processor, which prints a continuous pattern with arbitrary length and width, such as a hatching pattern, etc. by printing an arbitrary number of minimum unit dot patterns in succession. It is achieved by doing so.

[Embodiments of the invention]

Hereinafter, the method of the present invention applied to a Japanese word processor will be explained based on the drawings.

FIG. 1 shows a schematic configuration of a Japanese word processor to which the present invention is applied, in which 1 is a display tube, and 2 is an input device such as a keyboard.

3 is a pattern memory that stores characters, symbols, or patterns in units of dots. 4 is a printing device that receives the dot data stored in this pattern memory and prints it. Reference numeral 5 denotes a control section for controlling each of the above-mentioned constituent devices 1 to 4.

FIG. 2 shows an example of a pattern for one line, and FIG. 3 shows a basic pattern of minimum unit dots on a pattern memory for printing such a pattern. In other words, in this example, 8 as shown in Figure 3.
A hatching pattern is constructed by connecting three basic patterns of x8 dots in a row in the vertical direction.

It can be seen that when the printing head has 24 dots, it is sufficient to simply continue the basic pattern that does not shift to form a hatching pattern. However, if the hatching pattern spans multiple lines, the continuity of the hatching pattern may be lost. In other words, the number of dots between the lines is the number of dots in the basic pattern (in this example, 8
This problem occurs when the number is different from the dot).
For example, if the line spacing is set to 2/8, the line spacing will be 6 dots. Therefore, if a pattern of six dots from the top of the basic pattern in FIG. 3 is printed and then the next lower row is printed again from the basic pattern, the halftone pattern will be discontinuous. This is clear from the fact that continuity cannot be maintained unless the top two dots of the bottom row are made the bottom two dots of the basic pattern in FIG.

The method of the present invention provides a method that can maintain pattern continuity across a plurality of lines even if the line spacing is different from the dots of the basic pattern.

The specific supplementary information will be explained below. First, using the minimum unit dot pattern shown in FIG. 3 (hereinafter referred to simply as the basic pattern), in order to create a continuous hatching pattern of any size at any position on the paper, the printing start position shown in FIG. 4 is set. The development of the hatching pattern is controlled by the number of dots M and N from A to the pattern development start position B.

FIG. 5 shows a pattern after the basic pattern is shifted when the number N of vertical dots from A to B in FIG. 4 is divided by the number of vertical dots in the basic pattern of FIG. 3 and the remainder is 2. Based on the pattern in Fig. 5, by sequentially taking out the remainder from the positions of the left and right dots M from A to B in Fig. 4 divided by the number of horizontal dots in the basic pattern in Fig. 3 and setting them in the buffer, From a small basic pattern, a shading pattern as shown in FIG. 2 can be created.

FIG. 6 is a flowchart showing a control method for creating a hatching pattern based on a basic pattern.

When printing starts from position A in Figure 4 and shading starts from position B, the basic pattern is retrieved from the pattern memory in step 101 in Figure 6, and the printing start position is moved from position A in Figure 4 to B in step 102. The number N of upper and lower dots and the number M of left and right dots up to the position are determined. In step 103, a remainder is obtained by dividing the number N of upper and lower dots obtained in step 102 by the number of vertical dots of the basic pattern, and in step 104, the basic pattern extracted in step 101 is shifted upward by the number of dots corresponding to the remainder. In step 105, the pattern shifted in step 104 is stored in memory.

When the basic pattern shown in FIG. 3 is used and the shift amount is 2, the pattern shown in FIG. 5 is stored on the memory. In FIG. 5, the basic pattern of FIG. 3 is shifted upward by two dots, and the pattern of the upper two dots of FIG. 3 is set in the lower two dots. In step 106 of FIG. 6, a remainder is obtained by dividing the number M of left and right dots obtained in step 102 by the number of horizontal dots of the basic pattern, and in step 107, the pattern extraction pointer is moved to the right by the number of dots corresponding to the remainder. In step 108, the number of dot rows of the pattern required for printing is determined. In step 109, it is checked whether the required number of dot rows has been stored. If it has been stored, in step 114, it is processing and actually printing. If the required number of dot rows has not been completed in step 109, the shifted pattern stored in step 105 is read out one dot row at a time in step 110 and stored in the print buffer, and 1 is added to the pattern read pointer in step 111. . If in step 112 the pattern read pointer updated in step 111 exceeds the number of horizontal dots of the basic pattern, the pattern extract pointer is set to 1 in step 113 and the process from step 109 is repeated.

As described above, according to the flow shown in FIG. 6, the printing pattern for one line shown in FIG. 2 can be created based on the basic pattern shown in FIG. 3. The example in FIG. 3 is a rare example in which the number of dots N and M in FIG. 4 is divisible by the number of dots in the basic pattern.

Also, when printing halftone patterns on multiple locations on printing paper, that is, no matter where the pattern development start position B changes, the number of dots M and N from the print start position A to the pattern development start position B can be Since the basic pattern is divided by the number of dots in the basic pattern and the basic pattern is shifted according to the remaining number of dots, the formula for calculating the shift amount is simple and constant regardless of the position of the pattern development start position B. Therefore, calculations can be made quickly. It will be easily understood that this is due to the fact that the print start position A remains unchanged.

Through the processing described above, it is possible to print a continuous hatching pattern in any size at any position.

Next, an example will be shown in which the present invention is applied to printing vertical broken lines. In step 101 of FIG. 6, the basic pattern is retrieved from the pattern memory, and in step 102, the number of upper and lower dots from the printing start position is determined.
In step 103, a remainder is obtained by dividing the number of upper and lower dots obtained in step 102 by the number of vertical dots in the basic pattern, and in step 104, the basic pattern extracted in 101 is shifted upward by the number of dots corresponding to the remainder. In step 105, the pattern shifted in step 104 is stored in the image area for printing. Using the 8-dot pattern shown in FIG. 7 as the basic pattern, if the remainder obtained in step 103 is 2, the 8-dot pattern
The pattern shown in the figure is stored in the image area for printing. Here, in the case of vertical lines, there is no need to calculate in the horizontal direction, so the processes 106 to 113 in FIG. 6 are not necessary. When applying to a horizontal broken line, there is no need to calculate in the vertical direction, so the processing in steps 102 to 105 in Figure 6 is unnecessary, and in step 101 a basic pattern as shown in Figure 9 is created. After extracting, in step 106, the number of left and right dots is divided by the number of dots in the basic pattern to obtain the remainder, and in step 107, the pattern extracting pointer is moved to the right by the number of dots corresponding to the remainder obtained in step 106, and the memory area is Store the pattern in .

As described above, this method can be applied not only to halftone patterns but also to vertical lines.

The method of the present invention does not depend on the size of the basic pattern, and can be applied even if the size of the basic pattern is variable by internally storing information regarding the size.

〔Effect of the invention〕

As described above, according to the method of the present invention, when printing a hatching pattern at multiple locations on printing paper, the number of dots M and N are the number of dots of the basic pattern from the printing start position A to the pattern development start position B. Since the basic pattern is shifted according to the number of remaining dots, it is possible to print a continuous pattern of any size at any position by simply having the minimum basic pattern memory.
Moreover, the formula for calculating the shift amount is constant and simple regardless of the position of the pattern development start position B, and can be calculated quickly.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a Japanese word processor that implements the pattern printing control method of the present invention;
The figure shows the shading pattern, Figure 3 shows the basic pattern for shading, Figure 4 shows the position where the pattern is printed, and Figure 5 shows the basic pattern shifted. FIG. 6 is a control flowchart, FIG. 7 is a basic pattern of vertical broken lines, FIG. 8 is a pattern obtained by shifting the basic pattern of FIG. FIG. 9 is a diagram showing a basic pattern of horizontal broken lines. 1...display tube, 2...keyboard type input device,
3...Pattern memory, 4...Printing device, 5...
control section.

Claims (1)

[Scope of Claims] 1. A word processor in which a pattern such as shading is stored in a pattern memory, the extraction and composition of the pattern from the pattern memory is controlled by a control unit, and dot data such as shading is printed by a printing device. In the print control method of the setter, a minimum unit dot pattern consisting of a predetermined number of dots such as one continuous shading is stored in a pattern memory, and vertical dot patterns between the print start position of the printing paper and the start position of the shading, etc. Divide the number of dots in the direction by the number of dots in the vertical direction of the minimum unit dot pattern,
If a fraction is found, the minimum unit dot pattern is shifted vertically by that fraction, and the number of dots in the horizontal direction between the printing start position and the start position of shading etc. on the printing paper is converted to the horizontal direction of the minimum unit dot pattern. Divide by the number of dots, and if you get a fraction, shift the minimum unit dot pattern horizontally by that fraction, and print any number of shifted minimum unit dot patterns in succession to create a continuous pattern. A word processor pattern printing control method for printing a hatching pattern, etc. having an arbitrary length and width.