JPS6327878A - Display control system - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a display control method for a document creation device, and particularly relates to a display control method for a personal type document creation device.
The present invention relates to a display control method that makes it possible to display printed images in a faithful layout by effectively using the line buffer of the structure.

(Prior Art) In recent years, document creation devices have been developed to be small, lightweight, and inexpensive, using an LCD (liquid crystal display) for the display mechanism, a micro-floppy disk drive for the document file mechanism, and a thermal transfer blink for the printing mechanism. A document creation device called a so-called personal word processor has now been realized.

In this type of personal word processor, the number of lines and columns that can be displayed at one time on the display screen is significantly limited compared to the number of lines and columns on the printed page. cannot be displayed. Therefore, in the past, a layout display structure has been provided in which one character is replaced with a symbol mark of about one to four dots and a one-page document image is displayed in layout.

However, in such conventional print image display means, it is not only impossible to distinguish between the characters that make up the document, but also when displaying the layout necessary for proofreading, etc. Since line feed values and the like are not reflected, it is not possible to create an accurate layout, and it is necessary to actually type out the document in order to recognize the correct layout.

In addition, patterns of specific character types such as external characters and second-level characters are stored in an external memory 1 (for example, a dedicated floppy disk) dedicated to printing these character types, and when printing that specific character type, the external memory is accessed and the pattern is printed. In a device that expands and prints a text on a line buffer, even if the document layout is displayed using the conventional print image display means, specific character types such as non-standard characters are not displayed. A problem has arisen in that the occupied area on the top is not known, and therefore an accurate document printing image cannot be grasped.

(Problems to be Solved by the Invention) As mentioned above, in conventional personal word processors, character types are simply displayed as symbols, so it goes without saying that it is not possible to distinguish the characters that make up a document. , there is a problem that the character size, character spacing, line feed value, etc. are not reflected, and in the configuration where the specific character type pattern is obtained by accessing external memory, the area occupied by the specific character type is not displayed, so it is difficult to accurately document the document. There was a problem that the printed image could not be recognized.

The present invention provides a display R of a small number of dot matrix configuration with a relatively small number of display line digits in a personal word processor.
t14 and the printing line buffer, it is possible to clearly express the area occupied by a specific character type stored in external storage, and the layout of the print image can be displayed faithfully, so that the image of the entire document can be accurately grasped. The purpose of this invention is to provide a display control method for printed images.

[Structure 1 of the Invention (Means for Solving the Problems) The present invention provides that the mark 111 under the print image display mode
When developing the character pattern of the target Bunsen line on the line buffer, it is determined whether the character type to be expanded is a specific character type, and if the same character type is not the above-mentioned specific character type, the same character type pattern is expanded onto the line buffer. A means for developing the character type pattern on the back 7, and a reduction pattern of a predetermined dot matrix unit (for example, 1 / 4 × 1
/4), a means for writing the converted reduced pattern into a display buffer, and a means for converting the reduced pattern into a display buffer, and a means for converting the same converted pattern into a display buffer; and means for generating a pattern specific to a specific character type of the composition and filling it in the display buffer.

(Function) When displaying the layout of a print image, if the characters to be displayed are not of a specific character type such as external characters, a pattern of the same character type is developed on the line buffer, and then a reduced pattern (1/4 x 1 /4=6x6
Convert (compress) it into a dot) and write it to the display buffer.

Further, when the character to be displayed is a specific character type such as a non-standard character, a pattern unique to the specific character type having the same dot matrix structure as the reduced pattern is generated and the same pattern is written in the display buffer.

By equipping a personal word processor with such a display structure for print images, it is possible to save the display structure in a small dot matrix structure with a relatively small number of display lines, and to effectively use the print line buffer to store it in external memory. The area occupied by the specified character type can be clearly expressed, and the printed image can be faithfully displayed in layout, allowing an accurate understanding of the image of the entire document.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention.

In FIG. 1, 10 is a large-scale integrated circuit device made into one chip, and a processing unit (CPU) that controls the entire device.
Furthermore, an internal storage section consisting of ROM and RAM having a dictionary area, character font area, program area, work area, etc. is built-in. This integrated circuit device 10 is actually constructed with a terminal structure of about 100 pins.
This is realized based on the semiconductor integrated circuit technology disclosed in Japanese Patent Application No. 59-204462. Hereinafter, this large-scale integrated circuit device will be referred to as superintegration or SI.

11 to 19 are internal components of the above 8110, respectively. Of these, 11 is a CPU that controls the entire device, and in addition to processing such as key manual recognition, kana-kanji conversion, document editing and proofreading, character decoration for each line according to line attribute information, and print stop control. In addition to executing the line modification process including the above, the print image display control I process as shown in FIGS. 2 to 6 is executed. In the actual machine, this CPU 11 has a logical structure equivalent to 280. Additionally, in the figure, external buses connected to the system bus inside the 5ilo, connection terminals, and logic such as counters/timers provided inside the 5110 are omitted.

Reference numerals 12 to 18 are internal components of 5ilo connected to the internal system bus of the CPU 11, respectively.

Of these, 12 is a peripheral 11111 circuit (bidirectional interface circuit), one port of the three ports is used for keyboard scan data output (4 bits), and the other port is used for keyboard return signal output. Used for input (8 bits).

This peripheral control circuit is hereinafter referred to as PPI.

13 is a decoder (DC
E).

14 is a RAM, in which, in addition to a document buffer area, a non-standard character pattern area, a provisional dictionary fjA area, etc., there is also a display image buffer (hereinafter referred to as V-RAM) 140, a print line buffer (LB) 141, and a print line buffer (LB) 141. A work register area wt142 including a print control register area (RO to R19) as shown in FIG. 7, and a line modification pan 771 in which line modification information with a 3-byte/line structure as shown in FIG. 8 is stored.
#i area such as 43 is secured.

15 is a ROM, in which a kanji pattern storage unit (hereinafter K
A system program (referred to as PM) is provided, and system programs, a kana-kanji conversion dictionary, messages on multiple screens, etc. are stored.

Reference numeral 16 denotes a line interface section (C-INTF) for transmitting interval information (character code string) to and from external equipment under the control of the CPU 11.

17c LCD1tII11 circuit (LCDC) Accesses the V RAM 140 provided in the RAM 14 and outputs LCD display data.

18 is a printer controller (PRTC), and CP
Print image data is output via RAM 14 under the control of U 11.

Reference numeral 19 denotes a clock generator (CG), which receives the basic tarock output from an external oscillator (O20) 20 and outputs a predetermined frequency-divided clock, timing signal, etc.

20 is an oscillator (O20) that generates a basic clock and supplies it to the clock generator 19 inside 5ilo, and 30 is a keyboard (KB) connected to the PP 112 and decoder 13 inside the same <3110. 50 is LCD do 5
This is a liquid crystal display (hereinafter referred to as LCD) connected to the LCD series control circuit 17 inside the 8110 via the -+' bar (LCD-DRV) 51, and as shown in FIG. (20 lines in reduced mode
It has a 64o x 200 dot configuration that can display 80 characters). 60 is printer controller 1 inside 5110
This is a serial printer connected to 8. 70 is 3.5
It is a micro disk drive (FDD) and a floppy disk controller (FCC) 71
It is connected to the internal system bus of the CPU 11 inside the 8110 via the 8110 internal system bus. This floppy disk drive 7
To 0.

A document floppy disk for storing documents, a non-standard character floppy disk for storing non-standard characters, an M2 level floppy disk for storing each kanji pattern of the second level, etc. are selectively inserted.

2 to 6 are flowcharts showing the print image display processing flow executed under the control of the CPU 11, and FIG. 2 is a flowchart showing the processing flow of the entire print image display processing system. .

FIG. 3 is a flowchart showing the paper width scale display process (step 83) in the process in FIG. 2 above.

FIG. 4 is a flowchart showing the process (step 86) of calculating the number of display lines from the clipping range in the process shown in FIG.

Figure 5 (LCD 50 in the process in Figure 2 above)
It is a flowchart showing the above display processing (step 510).

FIG. 6 is a flowchart showing the process of loading data into the V-RAM 140 (step C25) in FIG. 5 above.

Figure 7 shows the working register #Ar11t1 in the RAM14.
Registers in the print control register area provided in 42 (
In addition to those shown here, there are also several working registers (IXrea.RO to R19).

Breg, DErelJ, 8Crea, etc.) are used for print image display processing.

FIG. 8 shows the row modification buffer 143 in the RAM 14 mentioned above.
This figure shows the structure of the row modification information stored in , and here it is composed of 3 bytes/row.

FIG. 9 shows the configuration of the printing line buffer (LB) 141. Here, during normal use, that is, during printing, it is configured with a width of 1.536 dots, but the print image During display processing, the width is expanded to 2,280 dots (see FIG. 11).

FIG. 10 shows the internal configuration of the V-RAM 14, which here includes 640x200 dots.

FIG. 11 is a diagram showing the displayable range on the LCD 50 and the dotted line of the paper width when displaying a print image. Here, the left edge of the paper, the right edge of 85 $u, the right edge of A4 portrait, the right edge of B4 portrait, The right edge of B4 is displayed as a guide with a one-dot dotted line.

FIG. 12 shows the clipping Ie of the LCD 50 (here 2
00 dot), and FIG. 13 is a diagram showing the relationship between the document and the screen when displaying the print image.
Screens can be switched by operating the cursor in the up and down directions.

Here, the operation of one embodiment will be explained with reference to the above figures.

When inputting a sentence containing kanji, the key input signal from the keyboard 30 is sent to the CPU 11 in the 8110.
The data is converted into kana-kanji under the control of , and stored in the document buffer 141 in the RAM 14. At this time, the CPU 11 outputs a scan signal to the keyboard 30 via the PP 112 and the decoder 13, and inputs the return number 4m to the PP 112 to perform key discrimination and generate a key code. Furthermore, for the designated part of the kanji that has been input into kana based on the same key code, the KPM (kana-kanji conversion process) in the ROM 15 and the provisional dictionary in the RAM 14 are indexed, and after the kana-kanji conversion process is performed, The input character code string including the converted kanji code is sent to the document buffer 141.
Store in.

During the above-described document input, the input characters stored in the document buffer 141 are sequentially developed into patterns on the V-RAM 140 under the control of the CPU 11, and
The illumination signal is displayed on the LCD 50 by the display control of the ill m1 circuit 17 and the display drive of the LCD driver 51.

The already input documents input in this way are displayed on the LCD 50 in up to 4 rows and columns according to the line/column specification using the cursor keys.
(80 columns x 20 lines when in reduced display mode with 0 columns x 10 lines)
It can be displayed in any character arrangement and is used for document editing, proofreading, etc.

For example, if you want to modify characters on a line-by-line basis or specify to stop printing for the above input document, select and display the character string at the line position you want to modify using the cursor keys,
Line decoration is specified by operating the C line decoration key in combination with the [Function] key and other specific keys. The detailed line modification means at this time is shown in Japanese Patent Application No. 129237/1988 (Document Creation Apparatus), so the explanation thereof will be omitted here.

The print image display processing operation will be explained below.

Here, during print image display processing, the normal printing result of a document in which multiple types of characters are mixed in line units is displayed as [1
The layout is displayed on the LCD 50 as an image reduced to 4x1/4].

First, line modifications such as character size, character spacing, line feed value, and paper exchange are specified for each line of a document input from the keyboard.

When the "print image display" key on the keyboard 30 is pressed here, the CPU 11 detects the line number of the line where the cursor is located, and then starts executing a print image display execution routine.

The display processing operation of the print image at this time is shown in Figures 2 to 1.
This will be explained with reference to FIG.

First, the entire processing operation for displaying a print image will be explained with reference to the flowchart shown in FIG.

Here, first, in step S1, the contents of the line modification above the cursor line detected upon pressing the "print image display" key are checked, and the line number of the line in which paper replacement is specified is detected; Register R with the accompanying number as the first line number of the page
Set to O.

Next, in step S2, rOJ is stored in the print control register R1 as a clipping dot indicating the clipping range.
(Hereinafter, each of the print control registers (RO to R19) will be simply referred to as a register). Thereafter, in step S3, a paper width scale is displayed on the LCD 50 as shown in FIG. This detailed processing flow
is shown in FIG.

Next, in step S4, the character position for displaying the image is "4" (specifically, a margin of 4 dot slices to prevent side lines etc. during portrait/horizontal conversion printing).
is set in register R2, and then in step S5, the contents of register RO are set in register R3 as the search line number. Then, in step S6, the number of display lines is determined from the clipping range. This detailed processing flow is shown in FIG.

Next, in step S1, if the number of display lines is "0", then in step S13, the next screen and one screen after another are designated as the clipping range, and it is determined whether there are any display lines.

If it is determined in step 313 that there is no display line, a page end mark as shown in screen 3 in FIG. 13 is displayed at the lower left of the screen in step S22.

Further, in step S7, if the number of display lines is other than "0", the number of display lines (R17) is determined in step S8.
) is set in the work register 8 Creg, and the display start line number (R7) is set in the work register DE in step S9, and then in step S10,
A print image is displayed on the LCD 50. This detailed display flow is shown in FIGS. 5 and 6.

Next, in step S11, the contents of register R17 (
The sum of the display line number) and the contents of register R7 (display start number @) is set in register R3 as the next search line number.

Next, in step S12, the search end flag (R4
) is “1” or not, and if it is not “1”,
The process returns to step 6 again to calculate the number of display lines.

Also, in step S12 above, the search end flag (
If R4 is "1n," in step 813, the same page end check as above is performed.

In this step $13, if there is no line to display, in step 822, a page end mark as described above is displayed at the lower left of the screen, and in step 823, the process waits for key input.

Also, if there is a display line in step 873 above,
At Slap S14, key personnel are required.

Here, if there is key power, the key is determined in steps 815 to 317, and if it is the up cursor key, the process of step 818 is executed, and if it is the down cursor key, the process of step S21 is executed, When the cancel key is pressed, the print image display is ended.

If it is any other key, the process waits again at step 314 for the key to be manually operated.

When the input of the up cursor key is determined in step S15, it is determined in step 318 whether the clipping dot (R1) is rOJ (displaying on the first screen), and if it is rOJ, the next Then, in step 819, it is determined whether the page top row number (RO) is "1" (the first page is being displayed), and if it is "1", the key is waited for human power in step 314 again. Become.

Also, in step S19 above, the page top line number (RO
) is not "1", the previous page final screen display process is performed in step 832.

If the clipping dot is not "0" in step 51B, r700J is subtracted from the clipping dot (R1) in step S20, and the process in step S3 is performed to display the previous screen.

Also, when waiting for key personnel in step S23 above,
If the key is pressed, the key is determined in steps 824 to 326, and if it is a cancel key, the printing image display is ended, and if the key is pressed, step 329 is executed.
Execute the process, and if the down cursor key is pressed, step 32
In step 7, it is determined whether or not it is the end of the sentence, and if it is the end of the sentence, the process goes to step 823 again where it becomes the key operator. If it is not the end of the sentence, the first line number of the next page is set in the page first line number (RO), and the process of step S2 is performed to display the first screen of the next page.

Also, in step 329, it is determined whether the clipping dot (R1) is "0", and if it is "o", then in step 30, the page top row number (RO) is determined.
It is determined whether or not is "1", and if it is "1", the key manpower is determined again in step S23.

Also, in step S29, if the clipping dot (R1) is not rOJ, in step S31, subtract r700J from the clipping dot (R1),
In order to display the previous screen, the process of step S3 is performed.

Also, in step S30 above, the page top row number (RO
) is not "1", in step S32, the line number of the first line of the previous page is set in register RO, and in steps 833 to 825, "O" is set in register R1, and register R is set to "O".
2 is set to "4", and register R3 is set to the value of register RO. Then, in step 336, the number of display lines is determined.

This detailed processing flow is shown in FIG.

Next, in step 337, the search end flag (R
4) Determine whether or not t-1n.

Here, when the search end flag (R4) is "1", it is determined in step 341 whether or not it is the last screen of the previous page, and if it is the last screen, the process of step S3 is performed. , steps 842 to 84 when the screen is not an R-line screen.
In the process of step 4, r700J is added to register R1 (clipping dot), the contents of register R6 (display start character position) are set to register S2, and register R
The contents of register R7 (display start line number) are set to 3, and the process returns to step S36.

Further, in step 837, if the contents of register R4 (search line number) are not "1", step 83
In step S8, it is determined whether the number of display lines (R17) is "0" or not, and if it is "0", the process of step S42 is performed. If display line ¥1 (R17) is not "0", it is determined in step 839 whether or not this is the last screen of the previous page, and if it is the last screen, r700J is calculated from the contents of register R1. Then, the process of step S3 is performed again. Also, if it is not the final screen, set r70 to register R1.
0J is added and the process of step S34 is performed.

Next, the details of steps 83.86 and 836.810 will be explained according to flowchart 1- of FIGS. 3 to 5.

FIG. 3 is a detailed flowchart of the [paper width scale display process] in step S3 in FIG. 2 above.

Here, first, in step A1, all the display screens of the LCD 50 are cleared, in step A2, the number of dotted dots rloOJ is set in the work register 13 reg, and in slap A3, the work register IXr is set.
eg 1. : Odd number start address of V-RAM 140 (
Here, 8001-1) is set.

Next, steps A4, As, A6, A7
, A8 are executed to OR-write one bit to each address on the V-RAM 140 at each dotted line position shown in FIG.

After that, in step A9, the working register IXre
Add “80” to o and read “1” from the working register.
”, and if the result is not “0”, step A4
The subsequent processing is repeated, and if the value is "0", the processing is terminated.

Through such processing, the LCD 50 is marked with dotted lines as shown in FIG.
Vertical right end, B4 vertical right end, B4 horizontal right! A scale display of each paper width indicating "it" is performed.

FIG. 4 shows step 86 in FIG. 2 above. This is a detailed flowchart of the process of determining the number of display lines from the clipping range in step 836.

First, in step B1, the contents of register R4 are set to "0", and in step B2, the contents of register R3 (search line number) are set in register R5.

Next, in step B3, the value of register R2 is set to 1/
Convert from 120 inch unit to dot unit and register R1
Set to 8.

Then, in step B4, in the BS, register R18
The value (character position dot) is the clipping dot (R1)
to determine whether it is within the range of [R1+800],
If it is within that range, the process of step 810 is performed.

If the line is outside the range in step B5, it is determined in step B6 whether or not the line is a line for paper exchange, and if the line is for paper exchange, the display line is changed in step 887. The number (R17) is set to "0" and the process ends. If the paper is not replaceable, "1" is added to register R5 in step B8, a line feed value is added to register R2 in step B9, and the process returns to step B3.

If the clipping range is determined to be outside the clipping range in step B5, the clipping range is set in register R2 in step B10.
The content (character position) is set in register R6 as the display start character position, "1" is set in register R17 as the number of display characters in step B11, and the content of register R1 (clipping dot) is set in step 812. Convert to 17120 inch units and register R
The value is subtracted from the contents (character position) of 2 and set in register R8 as the line feed position. Further step B13
At this point, the contents of register R5 are set in register R7 as the display start line number.

Next, in step 814, a line feed value is added to register R2, and in step 815, the contents of register R2 are changed to 1/
Convert from 120 inch units to dot units and set in register R18. Then, in step 816 and B17, the value of register R18 is changed to a clipping dot (R
1) to [R1+800] (7) It is determined whether or not it is within the range. If it is within the range, "1" is added to register R17, and then the process returns to step 814. Also, in step B17 above, if it is outside the range, step 81
In step B19, it is determined whether or not the paper is replaceable. If the paper is replaceable, the search end flag (R4) is set to "1" in step B19, and the process is terminated.

Also, if the paper is not replaceable, the process is immediately terminated.

FIG. 5 shows [LCD] in step s10 in FIG.
50] is a detailed flowchart of the display process shown in FIG.

Here, first, in steps CI and C2, the mark-image flag (R9) is set to "1, line buffer length (RIO) i,: r2280" (see Figure 9).
Set.

In the case of normal printing, in steps C3 and C4, register R9 (print image flag) is set to O”, register R1 is
N536J (see Figure 9) is set to 0.

Next, in step C5, the contents of the work register D E rea are set in the row number (R5), and in step C6, the contents of the work register D E rea are set in the row number (R11).
Set the contents of. Then, in step C7, the line feed amount (R
14) is set to "0". Furthermore, in step C8, line modification information corresponding to the line number in register R5 is set in the line modification area (R16), and in step C9, character size, character spacing, and line feed value are calculated from the values in register R16. Next, in steps CIO and C11, "0" is set in register R12 and register R12, respectively.

Next, in step C12, the corresponding character code is loaded from the contents of register R5 and register R13.

Then, in step C13, it is determined whether the character code is a character type stored in external storage. Here, if the character type is not in the external memory, in step C16, the RO
Read the character pattern according to the code from the KPM of M15 and write it to the character buffer (R19). If it is determined in step C13 that the character is an externally stored character (in this case, an external character accessed by the microfloppy disk drive 70 or a character type stored in the second level dedicated floppy disk), step C13 is executed. At step C14, it is determined whether the print image flag (R9) is 1'', and if it is 1n, all bits of register R19 are set to 1'' at step C15.

In this way, during print image display processing, the pure black pattern is displayed in the character buffer (R1
9) and expanded onto the line buffer (LB) 141.

A display example of this pure black pattern is shown in screen 1 of FIG. 13.

Further, when the print image flag (R9) is "Pa○", a character pattern (external character/second level kanji character, etc.) is read from an external storage (micro-floppy disk drive 70) and written to register R19.

Next, in step C18, character modification (for example, enlargement processing) is performed according to the contents of the line modification information in register R16.
Transfer the character pattern to the line buffer (LB) 14
Write to 1.

Then, in the next step C19, the character size value is added to the contents of register 12 (shock pointer), and in step C20, the contents of register R12 (write pointer) exceeds the line buffer length (R10). If it is determined that the number of characters in one line has been written, the print image flag (
The contents of R9) are determined.

Also, in step C20, if the value of register R12 (write pointer) does not exceed the line buffer length (R10), in step C21, add the character spacing to register R12 (&i pointer), Furthermore, in step C22, "1" is set in register R13 (digit number).
is added, and the process returns to step C12.

In step C23 above, the print image flag (R9)
It is determined whether or not is "1", and if it is "1", the value (line feed amount) of register R14 is added to the line feed position (R8).

Then, in step C25, the line buffer (LB
) 141 data is written to the V-RAM 140.

Further, in step C23, if the contents of the register R9 (print image flag) are not 1°, the printer (
PRT) 60, line feed and printing are performed.

Next, in step C26, the information in register R16 (
Find the line feed value from (TE modification area) and store it in register R.
Set it to 14. Then, in step C27, "1" is added to the contents (line number) of register R5, and in step C
29, "1" from the contents (number of lines) of register R11
pull. Furthermore, in step C30, register R11
It is determined whether the content (number of lines) is "0", and "0" is determined.
”, the process returns to step C8, and rO
When it is J, the process ends.

FIG. 6 shows the [V-R
[Write processing to AM 140]] is a detailed flowchart.

Here, first in step D1, line feed position fi(R
8) is converted from 1/120 inch unit to dot unit. Next, in step D2, it is determined whether the value of register R8 (line feed position) is within the range from "0" to r799J, and if it is outside the range, the process of step D5 is performed. If it is within the above range, the value of register R8 is 1/4 and set in the V-RAM Y position (R15). Then, in step D4, the line buffer (L B')
1/4 dot data from O to 3 dots from the top on 141
Reduce it to 4 x 1/'4 (if any dot of 16 dots (4 x 4 dot matrix) is "1", the reduced data is set to "1") and set the X position of V-RAM 140. r32J (unprintable range shown in FIG. 2), the y position or-writes the reduced data from the position indicated by the register R15 (V-RA~.1.Y position).

Next, in step D5, the direct (line feed position @
) is added to "4", and in step D6, the register R
It is determined whether the value of 8 is within the range from rOJ to r799J, and if it is outside the range, the process of step D9 is performed.

Also, if it is within the above range, the value of register R8 (line break position)
is set to 1/4 in register 15. Then, in step D8, the data of 4 to 7 dots from the top on the line buffer y (LB) 141 is reduced to 1/4 x L/4, and on the V-RAM 140 (7):)l[32J,
At the Y position, reduced data is or-written from the value of register R+5.

Next, in step D9, "4" is added to register R8, and in step 010, it is determined whether the value of register R8 is within the range of "0" to r799J. Here, if it is outside the range, the process of step DI3 is performed. If it is within the range, the value of register R8 is 1/4 and set in register R15.

Then, in step D12, the line buffer (LB)
The data of 8 to 11 dots from the top on 141 is 1/4
X Reduced to 1/4 and X position r3 on V-RAM 140
At the 2J and Y positions, reduced data is or-written from the value of register R15.

Next, in step D13, "4" is added to register R8, and in step D14, the value of register R8 is "○".
It is determined whether pronation is within the range of r799J, and if it is outside the range, the process of step [)17 is performed. Also, if it is within the range, the value of register R8 is 1/4 and the value of register R8 is set to 1/4.
Set to 5. Then, in step [)16, the top 12 to 15 dots of data on the line buffer (LB) 141 are reduced to 1/4 x 1/4 and sent to the V-RA.
At the X position r32J and Y position of M140, reduced data is OR-written from the value of the register R15.

Next, in step DI7, "4" is added to register 8, and in step D18, it is determined whether the value of register R8 is within the range of "0" to r799J, and if it is outside the range, step D21 is performed. Process. If it is within the range, the value of register R8 is set to 174 and set in register R15. Then, in step 020, the data of 16 to 19 dots from the top on the line buffer (LB) 141 is reduced to 1/4 x 1/4 and stored in the V-RAM 140.
At the upper X position r32J and Y position, reduced data is OR-written from the value of the register R15.

Next, in step D21, "4" is added to register R8, and in step D22, the contents of register R8 are changed to "0".
”, it is determined whether or not it is within the range of r799J, and if it is outside the range, the process is terminated. If it is within the range, the value of register R8 is 1/4 and set in register R15.

Then, in step D24, the line buffer ('L
B ”) Reduce the data of 20 to 23 dots from the top on 141 to 1/4 x L/4, and store it in T, V-RAM1.
40(7) At the X position r32J and the Y position, the reduced data is OR-written from the value of the register R15, and the process ends.

In this way, the print image display process is executed sequentially,
The print image is displayed on the LCD 50 in a compressed character pattern display format that is faithful to the actual printed document.

[Effects of the Invention] As detailed above, according to the present invention, a specific character type pattern of a document to be printed is stored in an external memory, and a print image of the same specific character type pattern on a line buffer is To set a print image display mode in a document creation device that has a printing till 111 means that performs printing independently of image development of a character type pattern, a display mechanism having an n-row x m-column display buffer, and a line correction fs function. means, and in the print image display mode according to the settings of the means, the character pattern of the document line to be printed is developed on the line buffer, and it is determined whether the character type to be developed is a specific character type. However, when the same character type is not the specific character type, means for expanding the same character type pattern on the line buffer, means for converting the expanded character type pattern into a reduced pattern in a predetermined dot matrix unit, and a reduced size of the converted character type. a means for writing a pattern on the display pants 7, and a means for generating a pattern unique to the specific character type having the same dot matrix configuration as the reduced pattern when the same character type is the specific character type when determining the character type; By equipping a personal word processor with a print image display mechanism that is equipped with means for writing to a display buffer, it is possible to effectively use a display mechanism with a small dot matrix configuration with a relatively small number of display line digits and a print line buffer. As a result, the area occupied by a specific character type stored in external storage can be clearly expressed, and the printed image can be faithfully displayed in layout, thereby making it possible to accurately grasp the image of the entire document.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an apparatus in an embodiment of the present invention. 2 to 6 respectively show the print image display processing flow in the above embodiment, FIG. 2 is a flowchart showing the entire processing flow of the print image display processing system, and FIG. FIG. 4 is a flowchart showing the paper width scale display process (step 83) in the process in FIG. 2, and FIG.
6), FIG. 5 is a flowchart showing the display process on the LCD (step 510) in the process in FIG. 2 above, and FIG. 6 is the V-R in FIG. 5 above.
It is a flowchart which shows the write process to AM (step C25). 7 to 13 are for explaining the operation of the above embodiment, respectively, and FIG. 7 shows the registers (RO to R19) in the print control register area provided in the working register area in the RAM. FIG. 8 is a diagram showing the configuration of line modification information stored in the row modification buffer in the RAM,
Figure 9 shows the configuration of the printing line buffer (ShiB), Figure 10 shows the configuration of the V-RAM, and Figure 11 shows the displayable range on the LCD and paper width when displaying the print image. FIG. 12 is a diagram for explaining the clipping range on the LCD, and FIG. 13 is a diagram showing the relationship between the document and the screen when displaying a print image. 10...
・5I, 11...CPU, 12...PPI (peripheral circuit 11 and 0), 13...Decoder (DCE>, 14
...RAM, 15...ROM, 16...Line interface section (C-INTF) 17...L CD
ill 111 circuit (LCDC), 18... Printer controller (PRTC), 19... Clock generator (CG), 20... Generator (O20), 30
...Keyboard (KB), 50...LCD, 60.
... Serial printer (PRT), 70... Floppy disk drive (FDD), 71... Flash disk controller (FDC), 140... Image buffer for display (V-RAM), 141...・Print line buffer (LB), 142... Working register area, 143... Line modification buffer 143 Applicant's agent Patent attorney Takehiko Suzue Paper width scale display Figure 3 Clipping range 61 Display i Number indexing Figure 4 (Part I) Figure 9 Figure 10 Unprintable area LCD horizontal direction O dot: Indicates the left edge of the paper O dot 7
Dotted line SXS dot: 1 dot indicating the 8s vertical right edge Dotted line sys dot: esjl! Heavy dotted line 4 showing the right edge
- Dot 2 1 dot dotted line indicating the right edge of B4 vertically @SS dot = 71 dot dotted line indicating the right edge of B4 horizontal LCD W surface format Figure 11

Claims (1)

[Claims] a print control means in which a specific character type pattern of a document to be printed is stored in an external memory, and print image development of the specific character type pattern onto a line buffer is performed independently from image development of other character type patterns; A document creation device having a display mechanism equipped with a display buffer of rows by m columns, the document creation device comprising: means for setting a print image display mode;
When the character pattern of the document line to be printed is developed on the line buffer in the print image display mode set by the same means, it is determined whether or not the character type to be developed is a specific character type, and When the character type is not the specific character type, means for developing the same character type pattern on the line buffer, means for converting the developed character type pattern into a reduced pattern in a predetermined dot matrix unit, and converting the converted reduced pattern into the above-mentioned reduced pattern. means for writing to the display buffer; and when the character type is determined to be the specific character type, a pattern unique to the specific character type having the same dot matrix configuration as the reduced pattern is generated and written to the display buffer; A display control method comprising means.