JPS61258768A - Minute line feed controlling system for page printer - 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] [Summary] In a page printer using a so-called code buffer format, a pattern for an overlapping part of an image of multiple lines to be output is created by newly synthesizing a CG pattern, and multiple lines are combined into one line. This paper discloses a small line feed control method in a page printer that makes it possible to realize a small line feed smaller than the body size of one character by assembling the characters as follows.

[Industrial application field]

The present invention uses a code buffer format to enable the line feed pitch to be freely set in a page printer that prints out pages of multiple lines.

This invention relates to a small line feed control method in a page printer that enables printing with CG parameters superimposed.

[Conventional technology]

FIG. 8 is an explanatory diagram of the conventional method, and FIG. 9 is a diagram for explaining print control information.

For example, as a method for outputting characters to a page printer such as a laser beam printer 5, a method using a code buffer 3 is known. If the code buffer format is not used, all the image information of the dots of the page to be output must be prepared for one page, and an image buffer larger than, for example, IMB is required. In a page printer that adopts the code buffer format, in order to save the memory amount of this image buffer, as shown in FIG.

For example, prepare a CG pattern memory 4 of 640 KB as an image buffer, set CG parameters such as standard characters, outlined characters, symbols, etc. in this CG pattern memory 4 as necessary, and set CG parameter points to be output from the code buffer 3. do.

In general, standard character CG parameters are prepared in ROM, or are stored on disk 1 or floppy disk 2.
is read out at the time of initial setting, and patterns such as non-standard characters are set sequentially.

The laser beam printer 5 accesses the CG pattern memory 4 based on the code buffer 3, obtains the CG parameters of each character, and prints them out page by page.

In FIG. 9, reference numeral 10 indicates an example of an output character image for one character, and the following primary information is required as print control information for the laser beam printer 5.

■ Body vertical size (line unit).

■ Body horizontal size (character unit).

■ Letter vertical size (character unit).

■ Letter horizontal size (in character units).

■CG pattern memory address (in character units).

[Problem that the invention seeks to solve]

With a line printer or a page printer that does not use a code buffer format, it is relatively easy to output CG parameters to be printed in an overlapping manner. However, page printers that use the code buffer format as shown in Figure 8 have the advantage of being able to save image buffers for the same CG pattern; Therefore, it is not possible to specify overlapping CG parameters in the code buffer parameters.

That is, the vertical size of the CG body is determined in units of two lines.

There is a problem that printing with overlapping patterns is not possible.

Furthermore, if 9, for example, 64KB is allocated to the code buffer, and one character is controlled by a 4-byte code, only 126 lines can be printed if each line has 130 characters due to the size limit of the code buffer. . For example, if we assume that the vertical size of one dot is 1/240 inch and print in the vertical direction of an 84-plate, the IC
Assuming 30×30 dots per G pattern, there are approximately 120 lines with 30 dots between lines, and it is impossible to print with a line spacing smaller than that.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes means as shown in FIG.

The compositing necessity detection means 11 is a means for checking whether or not there is overlap between lines of CG parameters to be output in relation to a line break pinch. When the two-composition necessity detection means 11 detects CG parameter duplication and determines that pattern synthesis is necessary, the pattern synthesis means 12 determines that pattern synthesis is necessary.

This is means for creating new superimposed CG parameters and executing processing for setting them in the CG pattern memory 15 for each row. The code buffer 1 setting means 13 performs a process of pointing each CG parameter synthesized by the pattern synthesis means 2 from each character corresponding area in one line in the code buffer 14. The page printer 16 outputs the CG pattern read from the CG pattern memory 15 according to the code buffer 14, as in the conventional case.

[Operation] According to the present invention, when the line break pitch is smaller than the size of the CG pattern and overlap occurs in the C'G pattern between two lines, the pattern synthesis means 12 is activated by the 9 synthesis necessity detection means 11 to generate two overlapping images. A new CG pattern is created.

Then, the code buffer setting means 13 sets the address of the new CG pattern in the CG pattern memory 15 to
Reset to code buffer 14.

Therefore, for example, for the code buffer 14 for n lines,
This means that it is possible to output an image with a number of lines substantially greater than n.

〔Example〕

FIG. 2 is a block diagram of an embodiment of the present invention, FIG. 3 is an example of output according to the present invention, FIG. 4 is a processing explanatory diagram of an embodiment of the present invention, and FIG. 5 is an example of pattern synthesis according to the present invention. FIG. 6 shows an example of a pattern synthesis result, and FIG. 7 shows an example of an output mode according to the present invention.

In FIG. 2, numerals 14 and 15 correspond to those in FIG. The previous assembly remaining check section 25 corresponds to the illustrated composition necessity detection means 11 in FIG. 1, and the CG pattern composition section 2
6 corresponds to the pattern synthesis means 12, and the code buffer 1 updating section 27 may be considered to correspond to the code buffer setting means 13.

The print request unit 20 is an application program that requests the laser beam printer 31 to print. The output control unit 21 calls the line assembly processing unit 22 for each line of data, sets the code buffer 4, and starts the laser beam program 31 in response to an output request for one page. .

In the case of the present invention, one line of the code buffer 14 is assembled with multiple lines of data in order to realize a small line break. The boundary check unit 23 checks the boundaries of each line in the code buffer 14. The one-line code buffer setting unit 24 sets, in the code buffer 14, the address of the CG pattern memory 15 corresponding to one line of data on the line boundary of the code buffer 14. The previous row assembly remaining check unit 25 uses the 9 synthesis necessity flag 29 to check whether there is any pattern related to the data of the previous row that is shifted.

The CG pattern synthesis unit 26 calculates the amount of pattern overlap according to the line feed pitch, and executes a process of synthesizing the CG pattern up to the previous line and the CG pattern of the current line. The code buffer update unit 27 executes a process of resetting the address of one combined CG pattern in the code buffer 14.

The boundary check register 28 stores the result of adding the line feed pitch for each line, and holds information that allows the boundary check unit 23 to detect boundaries. Note that the boundary check may be performed using a counter.

The assembled pattern save area 30 is a memory that temporarily stores a pattern that has shifted to a secondary row during the assembly of CG patterns up to the previous row.

Note that the CG pattern memory 15 may be used as the assembly pattern save area 30. Synthesis necessity flag 29
is a flag that is set to ``1'' when the 1-assembly pattern save area 30 is valid, indicating that 2-composition is necessary, and is set to ``0'' in other cases, indicating that 2-composition is unnecessary.

For example, as shown in Figure 3 (A), "Hikashi..."
For the output data of "Nishi..." and "Minami...".

Assume that for each line, a line feed pitch (■) which is one-half the vertical size (■) of the code buffer is specified and output is instructed. In the case of this embodiment, the patterns are printed in a superimposed manner as shown in FIG. 3(B). A specific example of processing related to the output will be described below with reference to FIGS. 4 and 5.

(i) For example, when the data "Hikashi..." in the first line is specified, a boundary check of the code buffer 14 is performed in the process P1 shown in FIG.

Since the first line corresponds to a line boundary, the second process P2 sets the code buffer 14 for one line from the CG pattern already existing in the CG pattern memory 15. Thereafter, in process P3, the illustrated synthesis necessity flag 29 in FIG.
, and determine whether there are any remaining patterns in the previous assembly.

There is no remaining data in the first row, so processing of the first row data is finished. As a result, as shown in FIG.
10 b, 10 c, etc. will be pointed.

(ii) In the process of assembling the data "Nishi..." on the second line, if a check is made in the process P1 shown in FIG. 3, the line feed pitch is 1/2 of the vertical size of the code buffer.
Therefore, it is detected that it is not within the boundary, and control is transferred to process P4.

In process P4, a new area is secured on the CG pattern memory 15, and the logical OR of the CG pattern of "Hikashi..." and the CG pattern of the upper half of "Nishi..." is set in that area. . In addition, the lower half of "Nishi..."
As for the G pattern, it is stored in the illustrated assembly pattern save area 30 in FIG. 2 as a remainder of the previous assembly, and the 2-synthesis necessity flag 29 is set to "1".

Then, through process P5, as shown in FIG.
Update to point to patterns 10d and 10e. As for blank characters.

Since there is no need for composition, the third character of the first line is.

It is sufficient to keep pointing at the standard CG pattern 10c of "shi".

(iii) Next, regarding the third line data “Minami...”.

When a boundary check is performed by processing P1.

Since it is on the boundary of the row, process P2 is executed. As a result, the 22nd line of the code buffer 14.

As shown in FIG. 5(C), a CG pattern 10f.

Point 10g, 10f,... Then, in process P3, the 1-synthesis necessity flag 29 is checked.

(iv) In this case, there is some assembly remaining from the previous row.

Since it is necessary to synthesize, execute process P4 and select "Minami...
'' pattern and the lower half pattern of ``Nishi...'' are combined. Then, by processing P4, FIG. 5(D)
As shown in FIG. 3, the second line code buffer 14 is rewritten to point to nine composite CG patterns 10h and 10t. Regarding the third character "mi", one of the characters is a blank character.

There is no need for synthesis.

By the way, when composing a pattern, for example, when graphic data is included in addition to normal characters, it is common practice to outline the graphics where characters exist to make each character easier to read. In this case, confusion between the two-character pattern and the graphic pattern can be prevented by processing the remaining partial patterns of the previous line to be superimposed later.

The result of the 9 composites obtained through the above processing is as shown in FIG. 6. When the laser beam printer 31 is activated using the code buffer 14 and the CG pattern memory 15, the printed result is shown in FIG. 3(B). It comes to show. That is,
In this example, three lines of data are stored in two lines of code buffer 14.

Output.

In the above example, we have explained the case where the line break pitch is 1/2 of the body vertical size, but of course, in the case of other line break pitches, the overlapping range of patterns is found by N simple calculations, and the pattern is synthesized in the same way. , can be printed.

FIG. 7 shows an example of an output mode according to the present invention. According to the present invention, small line breaks are possible.

It is not only possible to output an image in which a CG pattern is simply superimposed, but also a ruled line, which normally takes up an area of one character, as shown in FIG. 7(A).

It becomes possible to output an image that closely matches the character pattern. Further, as shown in FIG. 7(B), an output image can be constructed in which the paragraph is lowered by a half-line in the middle of one line. Yet again.

As shown in FIG. 7(C), it is also possible to output various calculation formulas including 9-fraction formulas in a well-formed manner.

〔Effect of the invention〕

As explained above, 2 According to the present invention, it is possible to specify detailed character positions in the 9-line direction in output from a page printer.1 For example, by specifying "0" for a specific line as the line feed pitch, Expressions using combinations of characters are also possible. Furthermore, the number of lines that can be written in one page can be increased without increasing the conventional code buffer.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, FIG. 3 is an example of output according to the present invention, and FIG. 4 is a processing explanatory diagram of an embodiment of the present invention. Fig. 5 is an example of pattern synthesis according to the present invention, Fig. 6 is an example of the pattern synthesis result, Fig. 7 is an example of the output mode according to the present invention, Fig. 8 is an explanatory diagram of the conventional method, and Fig. 9 is print control. A diagram for explaining information is shown. In the figure, 11 is a synthesis necessity detection means, 12 is a pattern synthesis means, 13 is a code buffer setting means, 14 is a code buffer, and 15 is a CG pattern memory. 16 represents a page printer. Patent Applicant Fujitsu Ltd. Representative Patent Attorney Hiroshi Mori 1) (1 other person) Tomomi Naso's morning plan Uiu, Yi Archipelago 2 countries Yi 35 Figure

Claims (1)

[Claims] A CG pattern memory (15) having a writable area in which a CG pattern based on dot images is stored;
A code buffer (14) that holds address information of each CG pattern in the CG pattern memory corresponding to a page to be output by the printer, and a CG read out from the CG pattern memory according to the address information stored in the code buffer. In a printing system equipped with a page printer (16) that outputs a pattern, a combination necessity detection means (11) that detects the presence or absence of duplication of CG patterns to be output, and a combination necessity detection means (11) that detects the presence or absence of duplication of CG patterns to be output, and according to continuous multiple lines of code information related to duplication. Combine all or part of the multiple extracted CG patterns,
Pattern synthesis means (
12); and code buffer setting means (13) for pointing each CG pattern synthesized based on the plurality of lines of code information from each character corresponding area in one line in the code buffer. Small line feed control method for printers.