KR100472450B1 - Method for printing document - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing method, and more particularly, to a method of printing a document by using an efficient poster printing method to prevent a drop in speed and overflow in a memory when printing a poster. The document printing method includes the steps of (a) generating a bitmap per page of the original document and dividing the generated bitmap into a predetermined number according to the input magnification ratio, and (b) to a page equal to the number and the size of the original document. Distributing each of the equalized bitmaps and sending them to a printer with an enlarged print command; (c) the printer receiving the enlarged print command enlarges and synthesizes each of the bitmaps distributed into the pages; Include. According to the present invention, by using an efficient poster printing method, the printing problem, which is the biggest problem in printing a poster, is suppressed by the occurrence of overflow of memory, thereby creating an effect that a user can use a poster function without inconvenience.

Description

{Method for printing document}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing method, and more particularly, to a method of printing a document by using an efficient poster printing method to prevent a drop in speed and overflow in a memory when printing a poster.

The poster function of a printer driver (not shown) is a function of expanding an original document twice, three times, four times, and the like. When the original document is enlarged using the poster function, a printer driver of a PC requires a large printer memory (not shown) to produce the enlarged data.

1 is a flowchart illustrating an operation of a conventional document printing method, and a 4x4 magnification mode will be described as an embodiment. In order to enlarge and print the document using the poster function, the user selects 4 × 4 poster printing (step 100). If 4 x 4 poster printing is selected, the printer driver enlarges the document by 4 times according to the scale factor (step 101). If you magnify the original document four times, a poster image of 16 pages should be created. Make sure you are at the end of the document to be enlarged (step 102), and if it is not at the end of the document to be enlarged, enlarge the vector, bitmap, font, which are the typical objects needed for printing, by 4 times. 16 pages of poster data are created in 16 loops (step 103). To perform the 4 × 4 poster function, 16 loops should be repeated for each of the vector objects (rectangle, line, circle, etc.), bitmap object, and font object needed for printing. You need to recalculate the clip area. In this case, the above three objects are not called once for a document, but the more complicated the document, the more hundreds of thousands of objects can be called. Since the object is called 16 times, it is necessary to run 16 loops. It takes a lot of time to make. In the case of the end of the enlarged document, poster data created for each object is reconstructed for each page (step 104). When the reconstructed poster data is sent to the printer together with the printer command, the printer prints the poster data having a size of 16 pages (step 105).

As such, the conventional document printing method is, for example, when printing a 4 × 4 poster.

1. Slow The printer driver has to run 16 loops each time for each object (vector, bitmap, font) called a lot to create poster data, calculate new coordinates for each object, enlarge the object, and generate a print command. Slow

2. The print command size becomes large. Since the print driver needs to generate an enlarged print command, it not only generates much more print commands, but also divides it into 16 pages with 4 times magnification, but if the image to be enlarged is spread over multiple pages, the object must be included on every page. As a result, duplicated print commands occur and the print command size becomes very large.

3. A lot of duplicate data is generated. The document of one page is enlarged 4 times and divided into 16 pages, but the objects overlapping by pages must be included in the overlapping pages, so the more complicated the document, the more overlapping objects, and inefficient duplicate commands and data are generated.

4. The printer uses a lot of memory and overflows the memory. In the case of a 4x4 poster, an object enlarged 4 times must be processed by the printer, which consumes a lot of printer memory, and the probability of memory overflow increases as the document becomes more complicated.

The technical problem to be achieved by the present invention is a document printing method that allows the user to use the poster function without inconvenience by suppressing occurrence of printing speed and memory overflow, which are the biggest problems when printing posters, using an efficient poster printing method. To provide.

According to an aspect of the present invention, there is provided a method of printing a document, the method including: (a) generating a bitmap per page of an original document and dividing the generated bitmap by a predetermined number according to an input enlargement ratio; (b) distributing each of the equalized bitmaps into pages equal to the number and size of the original document and sending them to the printer with an enlarged print command; And (c) enlarging, synthesizing, and printing each of the bitmaps distributed to the pages by the printer receiving the enlarged print command.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

2 is a flowchart showing the operation of the document printing method according to the present invention, in which a magnification ratio is selected for poster printing (200), conversion to raster mode (201), and bits per page of an original document. Generating a map (202), dividing the bitmap into a predetermined number according to an enlargement ratio (203), distributing the divided bitmap into a predetermined number of pages (204), and each bitmap for each page. A step 205 of generating and sending a print command to a printer to enlarge the printer, and a step 206 of enlarging and synthesizing each page and printing each page to fit on one page.

3 is a diagram for describing a method of printing a document in a 4 × 4 magnification mode according to an exemplary embodiment.

Next, the present invention will be described in detail with reference to FIGS. 2 and 3.

In the present invention, in order to solve the problem of slowing down the loop 16 times for each object, which is a problem of the prior art, and generating a lot of redundant data, the original document is made into a single bitmap and looped for each object. There is no need to turn, and the generated bitmap is divided equally according to the selected magnification, so there is no overlapping data.

In addition, in order to solve a problem in which the print command is enlarged by enlarging in the printer driver, the present invention generates a print command so that the printer can enlarge the original document as a bitmap and enlarge the printer after the original document is not enlarged at all. To be made smaller. At this time, even if the printer is enlarged, a very small bitmap is enlarged to fit exactly on one page so that the printer is not burdened and no memory overflow occurs.

Referring to FIG. 2, the user selects an enlargement ratio for poster printing (200). The poster function of the printer driver is to enlarge the original document twice, three times, four times, and so on. The magnification ratios that the user can select include 2 × 2, 3 × 3, and 4 × 4.

When the enlargement ratio is selected by the user, the printer driver converts to the raster mode (step 201). Raster mode is a mode that treats each object (vector, bitmap, font) as a bitmap. In other words, raster mode is a mode in which the entire page to be enlarged is made into a bitmap.

When the printer driver is converted to raster mode, a bitmap is generated per page of the original document (step 202). At this time, the original document is not enlarged and is generated as a bitmap as it is.

When the bitmap of the original document is generated, the generated bitmap is divided into a predetermined number according to the enlargement ratio (step 203). The number of equal parts varies depending on the magnification ratio selected by the user. If 2 × 2 magnification is selected, the bitmap of the original document is divided into four. If 3 × 3 magnification is selected, the bitmap of the original document is divided into nine. If 4 × 4 magnification is selected, the bitmap of the original document is selected. The map is divided into 16 equal parts.

The bitmap divided into equal numbers according to the selected enlargement ratio is distributed to a predetermined number of pages (step 204). The bitmap divided into four at the 2x2 magnification is distributed on each of four pages, and the bitmap divided into nine at the 3x3 magnification is distributed on each of the nine pages, and 16 at the 4x4 magnification. The equalized bitmap is distributed over each of sixteen pages. Here, the number of page sizes is the same as the original document page size.

In order to enlarge each bitmap for each page, a print command is generated and transmitted to the printer (step 205). Since the original document is not magnified at all, if you zoom in at the magnification ratio selected by the user on an equal slice, the printer generates a print command that magnifies it at the magnification ratio selected by the user because the image fits exactly on one page. To the printer.

In step 206, the printer enlarges and synthesizes each page to fit on one page. The printer receiving the print command sent from the printer driver prints each page enlarged and summed.

Referring to FIG. 3, FIG. 2 will be described in a 4x4 magnification mode. When the 4x4 magnification mode is selected by the user, the printer driver generates a bit map as shown in FIG. When a bit map as shown in FIG. 3A is generated, the printer driver divides the generated bit map into 16 equal parts as shown in FIG. 3B. The bitmap divided into sixteen is divided into sixteen pages equal to the size of the original document as shown in FIG. The printer driver generates a print command to enlarge each bitmap for each page, and sends the print command to the printer along with the bitmap distributed over 16 pages. In the printer, each page is enlarged and combined to form one page as shown in FIG. Print to fit.

The present invention is not limited to the above-described embodiments and can be modified by those skilled in the art within the spirit of the invention.

As described above, according to the present invention, by using an efficient poster printing method, the user can use the poster function without inconvenience by suppressing the decrease in printing speed and memory overflow, which are the biggest problems when printing a poster. do.

1 is a flowchart showing the operation of the conventional document printing method.

2 is a flowchart showing the operation of the document printing method according to the present invention.

3 is a diagram for describing a method of printing a document in a 4 × 4 magnification mode according to an exemplary embodiment.

Claims (1)

(a) generating a bitmap per page of the original document and dividing the generated bitmap into a predetermined number according to the input enlargement ratio; (b) distributing each of the equalized bitmaps into pages equal to the number and size of the original document and sending them to the printer with an enlarged print command; And and (c) enlarging, synthesizing, and printing each of the bitmaps distributed to the pages by the printer receiving the enlarged print command.