JPH0850585A - Display controller of document preparation device and display control method - Google Patents

Abstract

PURPOSE:To display the form scale corresponding to the format size when printing the document page to be printed at the printing image display mode. CONSTITUTION:In the document preparation device equipped with a printing image display function, a CPU 11 is the data for display which displays the form scale corresponding to the form size in printing the document page to be printed at the time of printing image display mode and develops the display data to identify the idle space and the printing range of the character information at the printing image display mode. The CPU 11 displays the display data developed to a V-RAM 140 on an LCD 50 in a screen unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device for a document preparation device, and more particularly to a personal type document preparation device, which is capable of faithfully laying out and displaying a print image by effectively using a line buffer of a printing mechanism. Display control device.

[0002]

2. Description of the Related Art In recent years, a so-called small-sized, light-weight, and low-priced so-called document forming apparatus has an LCD (liquid crystal display) as a display mechanism, a micro-floppy disk drive as a document file mechanism, and a thermal transfer printer as a printing mechanism. A document creating apparatus called a personal word processor has been realized.

In this type of personal word processor, the number of lines / digits that can be displayed at one time on the display screen is significantly limited as compared with the number of lines / digits of the printed page. The image cannot be displayed. Therefore, conventionally, a layout display mechanism is provided for replacing one character with a symbol mark of about 1 to 4 dots and displaying the layout of a document image of one page.

However, in such a conventional print image display means, it is not possible to discriminate the characters constituting a document, and at the time of the layout display necessary for proofreading of the document, the character size, character spacing, Since the line feed value and the like are not reflected, the correct layout cannot be recognized, and in order to recognize the correct layout, it is necessary to actually print out the document.

[0005]

As described above, in the conventional personal word processor, since the character type is simply displayed by the symbol mark, the characters composing the document cannot be discriminated, and the character size, There is a problem that an accurate document print image cannot be recognized because the space between characters and the line feed value are not reflected.

According to the present invention, in a personal word processor, by effectively using a display mechanism of a small number dot matrix structure having a relatively small number of display line digits and a printing line buffer, a page to be printed is divided into a plurality of screens and an arbitrary page is divided. It is an object of the present invention to provide a print image display control device capable of faithfully displaying a layout on a screen-by-screen basis and accurately grasping an image of an entire document on a screen-by-screen unit basis.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a means for dividing and managing a document page to be printed into a plurality of screens when a print image display mode is set, and an arbitrary constituent screen within the document page. Initial screen, front screen, and rear screen designation means to be designated, and character type information in the screen designated by the designation means or selected by the selection means are read out in units of lines and are developed into a line buffer. Means, a means for converting the character type pattern expanded on the same line buffer into a reduced pattern in a predetermined dot matrix unit, and a means for expanding the converted reduced pattern in a display buffer and displaying and outputting in screen units. The document page to be printed is divided into a plurality of screens and an arbitrary screen is faithfully laid out in a compressed display form.

[0008]

In the setting state of the print image display mode, after the character information on the screen designated by the designating means is sequentially formed into a character pattern and expanded on the print buffer,
It is converted into a reduced character pattern of a predetermined dot matrix unit and written in the display buffer, and an arbitrary screen in the print target document page is faithfully laid out in a compressed display form. Here, when the top screen in the same page is displayed by specifying the previous screen, if the previous screen is further specified, the last screen of the previous page is selected and the same screen is laid out in the compressed display form as above. It In this way, the document page to be printed is divided into a plurality of screens and the layout of any screen is faithfully laid out in the compressed display form, so that the personal word processor has a relatively small number of display columns and a small number of dot matrix structure. By effectively using the display mechanism and the line buffer for printing, the page to be printed can be divided into a plurality of screens and displayed faithfully.

[0009]

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, reference numeral 10 is a large-scale integrated circuit device that is made into one chip, and a processing unit (CPU) that controls the entire device, and a ROM having a dictionary area, a character font area, a program area, a work area, and the like. And R
An internal storage unit such as an AM is built in. This integrated circuit device 10 is constructed with a terminal structure of about 100 pins in an actual machine. Japanese Patent Application Nos. 59-204455 and 5
This is realized based on the semiconductor integrated circuit technology disclosed in Japanese Patent Application No. 9-204456 and Japanese Patent Application No. 59-204462. Hereinafter, this large-scale integrated circuit device will be referred to as super integration or SI.

Reference numerals 11 to 19 are internal components of the SI10. Of these, reference numeral 11 denotes a CPU that controls the entire apparatus. Here, in addition to processing such as key input determination, kana-kanji conversion, and document editing proofing, character modification in line units according to line attribute information and print stop control are performed. A line modification process including the print image display control process as shown in FIGS. 2 to 12 is executed.

In the actual machine, this CPU 11 is set to Z8.
The logical structure is equivalent to 0. Also, in the figure, SI
An external bus connected to the system bus inside 10 and a connection terminal, and logic such as a counter / timer provided inside SI10 are omitted.

Reference numerals 12 to 18 denote the CPU 11 described above.
Is an internal component of SI10 connected to the internal system bus of. Of these, 12 is a peripheral control circuit (bidirectional interface circuit), one of the three ports is used for keyboard scan data output (4 bits), and the other port is used for keyboard return signal input. Used for (8 bits). This peripheral control circuit is hereinafter referred to as PPI.

Reference numeral 13 is a decoder (DCE) which receives the keyboard scan data output (4 bits) of the PPI 12 and decodes the data, and sends it to the keyboard as 9 kinds of scan signals.

Reference numeral 14 denotes a RAM, which has a display image buffer (hereinafter referred to as V-RAM) in addition to a document buffer area, an external character pattern area, a temporary dictionary area, and the like.
140, a print line buffer (LB) 141, and a print control register area (R0 to R1) as shown in FIG.
A work register area 142 including 9), an area such as a row modification buffer 143 in which row modification information having a 3-byte / row structure as shown in FIG. 14 is stored is secured.

Reference numeral 15 denotes a ROM, which is provided with a kanji pattern storage unit (hereinafter referred to as KPM) in which various character fonts including kanji and English characters are registered, a system program, a kana-kanji conversion dictionary, and a plurality of screens. Message and the like are stored.

Reference numeral 16 denotes a line interface section (C-INTF) for exchanging document information (character code string) with an external device under the control of the CPU 11. 1
An LCD control circuit (LCDC) 7 accesses the V-RAM 140 provided in the RAM 14 and outputs LCD display data.

18 is a printer controller (PRTC)
Under the control of the CPU 11, the print image data is output via the RAM 14. Reference numeral 19 is a clock generator (CG), which is an external oscillator (OSC) 2
It receives the basic clock output from 0 and outputs a predetermined divided clock, a timing signal, and the like.

An oscillator (OS) 20 generates a basic clock and supplies it to a clock generator 19 inside the SI 10.
C) and 30 are keyboards (KB) which are also connected to the PPI 12 and the decoder 13 inside the SI 10.

50 is an LCD driver (LCD-DRV)
A liquid crystal display (hereinafter referred to as LCD) connected to the LCD control circuit 17 inside the SI 10 via 51,
Here, as shown in FIG. 16, 640 × capable of displaying 10 lines × 40 characters (20 lines × 80 characters in the reduced mode)
It has a 200-dot configuration. A serial printer 60 is connected to the printer controller 18 inside the SI 10.

Reference numeral 70 denotes a 3.5-inch micro floppy disk drive (FDD), which is a CP inside the SI 10 via a floppy disk controller (FDC) 71.
It is connected to the internal system bus of U11. In the floppy disk drive 70, a document floppy disk for storing a document, an external character floppy disk for storing an external character, a second level floppy disk storing each second level Chinese character pattern, etc. are selectively inserted. It

2 to 12 respectively show the CPU 11 described above.
2 is a flowchart showing a print image display processing flow executed under the control of FIG. 2, and FIG. 2 is a flowchart showing a processing flow of the entire print image display processing system.

FIG. 6 is a flowchart showing the paper width scale display process (step S3) in the process shown in FIG. 7 and 8 are processes for calculating the number of display lines from the clipping range in the process in FIG. 2 (step S6).
It is a flowchart showing.

9 and 10 are flowcharts showing the display process (step S10) on the LCD 50 in the process in FIG. 11 and 12 are flowcharts showing the write processing (step C25) to the V-RAM 140 in FIG.

FIG. 13 shows the registers (R0 to R19) of the print control register area provided in the work register area 142 in the RAM 14. Several work registers (R0 to R19) other than those shown here are shown. IXreg, Breg,
DEreg, BCreg, etc.) are used for print image display processing.

FIG. 14 shows the structure of the line modification information stored in the line modification buffer 143 in the RAM 14, and is composed of 3 bytes / line here. FIG.
Shows the structure of the print line buffer (LB) 141. Here, the line buffer (LB) 141 has a width of 1,536 dots for normal use, that is, for printing, but for print image display processing. The width is expanded to 2,280 dots (see FIG. 17).

FIG. 16 shows the structure of the V-RAM 140, which has 640 × 200 dots. FIG. 17 is a diagram showing a displayable range on the LCD 50 and a dotted line of the paper width when displaying a print image. Here, the left edge of the paper, the right edge of the B5 portrait, the right edge of the A4 portrait, the right edge of the B4 portrait, and the B4 landscape. The right edge of each is displayed as a guide with a dotted line of 1 dot.

FIG. 18 is a diagram for explaining the clipping range (here, 200 dots) of the LCD 50, and FIG. 19 is a diagram showing the relationship between the document and the screen when the print image is displayed. The screen can be switched with.

The operation of the embodiment will now be described with reference to the above figures. When inputting a sentence containing Chinese characters, the key input signal input from the keyboard 30 is C in SI10.
Kana-to-Kanji conversion is performed under the control of the PU 11 and stored in the document buffer 141 in the RAM 14. At this time, CPU1
1 outputs a scan signal to the keyboard 30 via the PPI 12 and the decoder 13 and inputs the return signal from the PPI 12 to perform key discrimination and generate a key code.

Further, after the KPM (Kana to Kanji conversion dictionary) in the ROM 15 and the temporary dictionary and the like in the RAM 14 are indexed for the Kanji designated portion input by Kana based on the same key code, and after the Kana to Kanji conversion process. , And stores the input character code string including the converted Kanji code in the document buffer 141.

At the time of inputting the above-mentioned document, the input characters stored in the document buffer 141 are sequentially developed on the V-RAM 140 under the control of the CPU 11 and LC
Display control of D control circuit 17, and further LCD driver 15
It is displayed and output in the LCD 50 by the display drive No. 1.

The already-input document thus input is
Up to 40 columns x 10 rows (80 columns x in reduced display mode) on the LCD 50 according to the row / column designation by operating the cursor keys.
It can be displayed arbitrarily with a character arrangement of 20 lines) and is used for editing and proofreading of documents.

For example, when it is desired to character-modify a line or to specify printing stop for the input document, the character string at the line position to be modified is selected and displayed by the cursor key operation, and [Function ]] And other specific keys are combined to specify the line modifier by operating the [Line modifier] key. The detailed line modification means in this case is Japanese Patent Application No. 60-1292.
No. 37 (document creating apparatus), the description thereof will be omitted here.

The print image display processing operation will be described below. Here, during the print image display processing, the normal print result of a document in which a plurality of types of characters are mixed in units of lines is displayed as a layout on the LCD 50 with an image reduced to [1/4 × 1/4].

First, with respect to the document input from the keyboard, line modifications such as character size, character spacing, line feed value, and paper exchange are designated for each line. When the "print image display" key on the keyboard 30 is pressed here, the CPU 11 starts execution of the print image display execution routine after detecting the line number of the line on which the cursor is located.

The display processing operation of the print image at this time will be described with reference to FIGS. First, the overall processing operation of print image display will be described with reference to the flowchart of FIG.

First, in step S1, the contents of the line modification above the cursor line detected by pressing the "print image display" key are checked to detect the line number of the line designated for paper exchange. , And sets the accompanying number as the page head number in the register R0.

In step S2, "0" is set as the clipping dot indicating the clipping range to the print control register R1 (hereinafter, the print control register (R0 to R19)).
Each of which is simply called a register). Then, in step S3, a scale display of the paper width as shown in FIG. 17 is performed on the LCD 50. This detailed processing flow is shown in FIG.

Next, at step S4, "4" (specifically, a margin of 4 dot slices for preventing side-line omission etc. at the time of vertical / horizontal conversion printing) is set in the register R2 as the character position for image display. Then, in step S5, the content of the register R0 is set in the register R3 as the search row number. Then, in step S6, the number of display lines is calculated from the clipping range. This detailed processing flow is shown in FIGS. 7 and 8.

Next, if the number of display lines is "0" in step S7, the next screen and the next screen are designated in the clipping range in step S13, and it is determined whether or not there are display lines.

If it is determined in step S13 that there is no display line, a page end mark (end of page) as shown in the screen 3 of FIG. 19 is displayed in the lower left of the screen in step S22.

When the number of display lines is other than "0" in step S7, the number of display lines (R17) is set in the work register BCreg in step S8, and the display start line number (R17) is set in step S9. R7)
Is set in the work register DE, and then step S10
At, the print image is displayed on the LCD 50. This detailed display flow is shown in FIGS. 9 to 12.

Next, in step S11, the register R
A value obtained by adding the contents of 17 (the number of display lines) and the contents of the register R7 (display start line number) is set in the register R3 as the next search line number.

Next, in step S12, it is determined whether or not the search end flag (R4) is "1", and "1" is set.
If not, the process returns to the above step 6 again to calculate the number of display lines.

In step S12, if the search end flag (R4 is "1", the same page end check is performed in step S13. If there is no display line in step S13, step S22 is performed.
At the bottom left of the screen, the page end mark as described above is displayed, and the key input is awaited in step S23.

If there is a display line in step S13, the key input is awaited in step S14. Here, if there is a key input, steps S15 to S1
In step 7, if the key is the up cursor key, the process of step S18 is executed, if it is the down cursor key, the process of step S21 is executed, and if it is the cancel key, the print image display is terminated. If it is any other key, the key input is awaited again in step S14.

When it is determined in step S15 that the up cursor key has been input, it is determined in step S18 whether the clipping dot (R1) is "0" (first screen is displayed). Then, step S
In 19, it is determined whether the page top line number (R0) is "1" (displaying the first page), and if it is "1",
In step S14, the key input is awaited again.

If the page top row number (R0) is not "1" in step S19, the previous page final display process is performed in step S32. Also, the above step S
If the clipping dot is not "0" in 18, the clipping dot (R
To subtract "700" from 1) and display the previous screen,
The process of step S3 is performed.

If there is a key input while waiting for a key input in step S23, steps S24 to S2 are performed.
If the key is a cancel key, the print image display is terminated. If the cursor is the up cursor key, the process of step S29 is executed. If the key is the down cursor key, it is determined in step S27 whether it is the end of sentence. If it is determined that it is the end of the sentence, the key input is awaited again in step S23. If it is not the end of the sentence, the page top line number (R0) is set to the top line number of the next page, and the process of step S2 is performed to display the first screen of the next page.

In step S29, it is determined whether the clipping dot (R1) is "0",
If it is "0", it is then determined in step S30 whether or not the page top line number (R0) is "1". If it is "1", the key input waiting is again performed in step S23.

If the clipping dot (R1) is not "0" in the step S29, the step S29 is executed.
31, the clipping dot (R1) to “70
In order to subtract "0" and display the previous screen, the process of step S3 is performed.

If the page top line number (R0) is not "1" in step S30, step S32 is performed.
In, the line number of the first line of the previous page is set in the register R0, and in steps S33 to S25, the register R1 is set to "0", the register R2 is set to "4", and the register R3 is set to the value of the register R0. And step S3
In step 6, the number of display lines is calculated. This detailed processing flow is shown in FIG.

Next, in step S37, it is determined whether or not the search end flag (R4) is "1". Next, in step D13, "4" is added to the register R8, and in step D14, the value of the register R8 is "0".
To "799", it is judged whether or not it is within the range of "799".

When it is within the range, the value of the register R8 is set to 1
Set to / 4 and set in the register R15. Then, in step D16, the data of 12 to 15 dots from the top on the line buffer (LB) 141 is reduced to 1/4 × 1/4, and the X position of the V-RAM 140 is “32” and the Y position is the value of the register R15. Or write the reduced data from.

Next, in step D17, the register R8
To the register R8 in step D18.
It is determined whether the value of is within the range of "0" to "799", and if it is out of the range, the process of step D21 is performed.

When it is within the range, the value of the register R8 is set to 1
Set to / 4 and set in the register R15. Then, in step D20, the data of 16 to 19 dots from the top on the line buffer (LB) 141 is reduced to 1/4 × 1/4 and the X position “32” and the Y position of the V-RAM 140 are determined from the value of the register R15. Write the reduced data.

Next, in step D21, the register R8
To the register R8 in step D22.
It is determined whether or not the value of is within the range of "0" to "799", and if it is out of the range, the process is terminated.

If it is within the range, the value of the register R8 is set to 1
Set to / 4 and set in the register R15. Then, in step D24, the data of 20 to 23 dots from the top on the line buffer (LB) 141 is reduced to ¼ × ¼, and the X position of the V-RAM 140 is “32” and the Y position is the value of the register R15. The reduced data is OR-written from, and the process ends.

In this way, the print image display processing is sequentially executed, and the print image is displayed on the LCD 50 in a display form by the compressed character pattern display that is true to the actual print document.
Displayed above.

[0059]

As described above in detail, according to the present invention, n
In a document creation apparatus having a line × m-digit display buffer, a line buffer for printing, and a line modification function, a mode display unit for setting a print image display mode, and printing in the print image display mode by the setting of the unit Means for dividing and managing the target document page into a plurality of screens; means for designating an initial screen for designating an arbitrary constituent screen within the document page; means for designating a previous screen; and means for designating a rear screen. Means for reading out the character type information in the screen designated by the designating unit for each line and developing the pattern on the line buffer, and a reducing pattern of the character type pattern developed on the line buffer in a predetermined dot matrix unit And a means for expanding the converted reduced pattern in the above-mentioned display buffer and displaying and outputting in screen units. The document mechanism is divided into a plurality of screens and the layout is displayed faithfully in a compressed display form, so that the display mechanism of the minority dot matrix structure with a relatively small number of display line digits and the line buffer for printing. By effectively using, the layout of the page to be printed can be faithfully displayed on a plurality of screens, and the image of the entire document can be accurately grasped on a screen-by-screen basis.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing a print image display process of this embodiment.

FIG. 3 is a flowchart showing a print image display process of this embodiment.

FIG. 4 is a flowchart showing a print image display process of this embodiment.

FIG. 5 is a flowchart showing a print image display process of this embodiment.

FIG. 6 is a flowchart showing a print image display process of this embodiment.

FIG. 7 is a flowchart showing a print image display process of this embodiment.

FIG. 8 is a flowchart showing a print image display process of this embodiment.

FIG. 9 is a flowchart showing a print image display process of this embodiment.

FIG. 10 is a flowchart showing a print image display process of this embodiment.

FIG. 11 is a flowchart showing a print image display process of this embodiment.

FIG. 12 is a flowchart showing a print image display process of this embodiment.

FIG. 13 is a conceptual diagram showing the contents of a print control register area in the RAM according to this embodiment.

FIG. 14 is a conceptual diagram showing the structure of line decoration information according to the present embodiment.

FIG. 15 is a conceptual diagram showing a configuration of a print line buffer according to the present embodiment.

FIG. 16 is a conceptual diagram showing the configuration of a V-RAM according to this embodiment.

FIG. 17 is a conceptual diagram showing a scale display of paper width according to the present embodiment.

FIG. 18 is a conceptual diagram for explaining a clipping range on the LCD according to the present embodiment.

FIG. 19 is a conceptual diagram showing a relationship between a document and a screen when displaying a print image according to the present embodiment.

[Explanation of symbols]

10 ... SI, 11 ... CPU, 12 ... PPI (peripheral control circuit), 13 ... Decoder (DCE), 14 ... RAM, 15
... ROM, 16 ... Line interface (C-INT
F), 17 ... LCD control circuit (LCDC), 18 ... Printer controller (PRTC), 19 ... Clock generator (CG), 20 ... Oscillator (OSC), 30 ... Keyboard (KB), 50 ... LCD, 60 ... Serial printer (RPT), 70 ... Floppy disk drive (F
DD), 71 ... Floppy disk controller (FD
C), 140 ... Image buffer for display (V-RA
M), 141 ... Line buffer for printing (LB), 1
42 ... Work register area, 143 ... Line modification buffer.

Claims (4)

[Claims] 1. A document creation apparatus having a display buffer and a print line buffer, wherein a mode setting means for setting a print image display mode, and when printing a document page to be printed in the print image display mode. Display data for displaying a paper scale corresponding to the paper size of the display buffer, the display data for identifying the print range of the character information expanded in the margin and the print line buffer is displayed in the display buffer. And a means for displaying and outputting the display data expanded in the display buffer on a screen-by-screen basis. 2. A document creating apparatus having a display buffer and a print line buffer, wherein a step of setting a print image display mode, and a paper for printing a document page to be printed in the print image display mode Display data for displaying a paper scale corresponding to the size, wherein the display data for identifying the print range of the character information expanded in the margin and the print line buffer is expanded in the display buffer. And a step of displaying and outputting the display data expanded in the display buffer on a screen-by-screen basis. 3. A document creation apparatus having a display buffer and a print line buffer, wherein mode setting means for setting a print image display mode, and character information of a document page to be printed in the print image display mode Determining means for determining whether the character information is normal character information or external character information, and means for reading character information of the document page line by line, patterning it and developing it on the print line buffer, In the case of character information corresponding to information, a means for writing a preset specific pattern, and a character pattern expanded on the print line buffer or the specific pattern expanded on the display buffer and displayed in screen units A display control device for a document creation device, comprising: a means for outputting. 4. A step of setting a print image display mode in a document creation apparatus having a display buffer and a print line buffer, wherein in the print image display mode, character information of a document page to be printed is a normal character. The step of determining whether it is the information or the external character information, the character information of the document page is read line by line, is patterned, and is expanded on the print line buffer, and the character information corresponding to the external character information is read. In this case, it comprises a step of writing a preset specific pattern, and a step of developing the character pattern or the specific pattern expanded on the print line buffer in the display buffer and displaying and outputting in screen units. A display control method characterized by: