JPH0670737B2 - Character processor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a character processing apparatus capable of creating and editing a document, and more particularly, character processing capable of setting a line spacing of a document to be displayed to an arbitrary value for each line. It relates to the device.

[Prior Art] Conventionally, in this type of character processing device, line spacing values are often specified for all documents, and few devices can be specified for each line. In addition, a line spacing value can be specified for each line, and once the line spacing is specified, the specified line continues until the specified line is changed in the character processing device. If specified, the specified value between the lines will be interpreted as the following line value. Therefore, when the operator erroneously sets a line spacing value indicating that overlapping display or overlapping printing is performed, there is a problem that overlapping display or overlapping printing is executed over many lines.

[Objective] Therefore, the object of the present invention is to eliminate the above-mentioned drawbacks and to specify the inter-row pitch of an arbitrary row, so that the inter-row pitch effectively acts on that row and affects as the inter-row pitch of other rows. The object is to provide a character processing device that does not include such a character.

[Embodiment] Hereinafter, a character processing device of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram showing an example of the configuration of the character processing device of the present invention.

In FIG. 1, 1 is input means for inputting a line spacing value indicating at least line spacing of a document to be displayed, and 2 is a line spacing value to be changed to the line spacing value when the input means 1 changes the line spacing value. A changing means, 3 is a first for storing the input content from the input means 1, that is, the line spacing value and the character string.
Is a storage means. Reference numeral 4 denotes a second storage means for rewriting and storing the storage content in the first storage means 3 into a pattern in a display format in accordance with the content of change of the line spacing value changing means 2.
Is a display means for outputting and displaying the stored contents of the second storage means 4.

That is, the character processing device of the present invention stores the line spacing value input from the input means 1 in the first storage means 3,
The display pattern corresponding to the line spacing value is stored in the second storage means 4
It is formed inside and the stored contents are displayed on the display means 5.

FIG. 2 shows an example of the configuration of the character processing device of the present invention.

Here, the CPU is a microprocessor, which performs arithmetic operations for character processing, logical decisions, etc., and controls each component connected to these buses via an address bus AB, a control bus CB, and a data bus DB. Control. This microprocessor CPU has an internal counter as described in detail below.
With N, P and L. The address bus AB transfers an address signal indicating a component to be controlled by the microprocessor CPU. The control bus CB transfers and applies the control signals of the respective components to be controlled by the microprocessor CPU. The data bus DB transfers data between the constituent devices. The CPU functions as a determining unit, a line spacing changing unit, and an output controlling unit by executing a control procedure stored in a ROM described later.

The ROM is a read-only memory and stores the procedure of control by the microprocessor CPU, which will be described later with reference to FIGS. 8 and 9. The RAM is a writable random access memory having a structure of 1 word and 16 bits, and is used for temporary storage of various data from each constituent element.

The DBUF is a buffer memory as a storage unit, and stores a line spacing value and document information described later input from a keyboard KB as an input unit described later.

The VRAM is a display buffer memory and stores a character pattern corresponding to the above-mentioned buffer memory DBUF. This display buffer memory VRAM has a vertical direction as shown in FIG.
Since it is composed of 50 bits and 80 bits in the horizontal direction, and one character is composed of 8 bits × 8 bits, a character pattern can be stored over 5 lines with 10 characters per line.

The keyboard KB serves as a first line spacing instruction means and a second line spacing instruction means, and various functions for the character processing device such as a character symbol input key such as an alphabet key, a hiragana key, a katakana key, and a kanji part start / end designation key. It is equipped with various function keys for instructing.

CR is a cursor register, microprocessor CPU
Can read and write the contents of the cursor register CR. The display control unit CRTC, which will be described later, is the first together with the CPU and VRAM described above.
Keyboard which is a line spacing instruction means and a second line spacing instruction means
It constitutes the output control means that outputs the character string to the display CRT as the display means based on the line spacing designated by KB, and the position on the display CRT corresponding to the address stored in this register CR. Display the cursor on. The display controller CRTC plays a role of displaying the contents stored in the cursor register CR and the display buffer memory VRAM on the display CRT.

Further, the display CRT is a display using a cathode ray tube or the like as a display means, and displays the dot configuration display pattern and the cursor display on the display CRT.
Controlled by TC. CG is a character grenator, which generates character signals such as characters, symbols, and cursors displayed on the display CRT.

In the character processing device of the present invention composed of each of the above components, the character processing device operates according to various inputs from the keyboard KB, and when the inputs from the keyboard KB are supplied,
First, an interrupt signal is sent to the microprocessor CPU, and the microprocessor CPU
Various control signals stored in the OM are read out, and various controls are performed in accordance with those control signals.

Next, FIG. 3 shows a configuration example of the buffer memory DBUF shown in FIG. 2. This buffer memory DBUF has a storage area of 5 rows × 10 columns, and the top column (first column) of each row is Only the line spacing value of the document to be created and displayed can be stored.
~ 9 "or space Stores one of these. When the line spacing is "0", it indicates that the content of the next line is displayed on the display CRT overlapping the previous line. When the line spacing value is "1", the line between the next line and the previous line is displayed. Indicates that the display interval is one line. Further, when the line spacing value is "2", there is one blank space between the previous display line and the next display line. In the following, when the line spacing value is "3 to 9" Similarly, there is a blank for 2 to 8 lines between the previous display line and the next display line. Note that the line spacing is a space When, indicates that the line spacing is the same as the line immediately before.

FIG. 4 shows an example of the initial state of each storage area of the buffer memory DBUF shown in FIG. 2, and FIG. 5 shows “0” as the line spacing value of the second line from the initial state of FIG. An example of a state diagram of each storage area of the buffer memory DBUF when input is shown. CU in the figure indicates a cursor.

FIG. 6 shows an example of the structure of the display buffer memory VRAM shown in FIG. 2, and the display on the display screen of the display CRT is displayed in the state of the positional relationship corresponding to the storage area of the display buffer memory VRAM. To be done. In this display buffer memory VRAM, a character pattern corresponding to the storage content of the buffer memory DBUF is obtained from the character generator CG and stored. At this time, the storage of the character pattern in the display buffer memory VRAM is executed according to the line spacing value stored in the buffer memory DBUF. Especially when the line spacing is "0",
Character patterns are stored in the display buffer memory VRAM.
Since it is stored again together with the character pattern that already exists, the overlay display on the display CRT will be executed correctly.

FIG. 7 shows an example of each storage area of the display buffer memory VRAM when the line spacing value of the second line is changed to “0” as shown in FIG. 5, that is, in the case of overlapping display. In this figure, since the line spacing value is set to "0" in the second line, the character string in the third line shown in FIG. It is shown that the character strings on the fourth and subsequent lines shown in FIG. 5 are stored on the third and subsequent lines as the interline value "1".

Next, referring to the flow charts of FIGS. 8 and 9, from the initial state of each storage area of the buffer memory DBUF shown in FIG. 4 to change the line spacing value as shown in FIG. It will be explained in detail that the contents stored in the display buffer memory VRAM, when executed, are as shown in FIG.

In FIG. 8, first, at step 81, initial setting at the time of turning on the power is performed, and input and editing are possible. It should be noted that in the present embodiment, processing such as inputting and editing is realized by a known technique, so a detailed description thereof will be omitted.

Here, as the initial setting state, it is assumed that the line spacing value and the character string are stored in each storage area of the buffer memory DBUF as shown in FIG. Further, in this embodiment, the line spacing value is a space. When, the line spacing is the same as the line immediately before. Therefore, as shown in FIG. 4, the keyboard as the first line spacing instruction means.
According to KB, "1" is added at the beginning of the first line, and lines below it If you enter each, all the displayed lines will have the same line spacing as the line spacing value of "1", so the stored contents will be displayed on the display CRT in the same positional relationship as the storage area of the buffer memory DBUF. Will be done.

Next, at step 82, a key input is made from the keyboard KB, and then the processing proceeds to step 83, at which it is determined whether or not the key input is an instruction to change the line spacing.
For example, as shown in FIG. 4 or 5, cursor CU
Is at the beginning of each line, and the key input from the keyboard KB as the second line spacing instruction means is "0-9" or space. Only when the line spacing is changed to, it is determined that the line spacing is changed and the process proceeds to step 84 and step 86 to execute each process described later. For other key inputs, the process proceeds to step 85, and various processes such as input editing according to the key input are executed.

In step 84, the line spacing value of the predetermined line corresponding to the cursor CU is changed, and the line spacing value of the second line is changed to "0" as shown in FIG. Next, at step 86, as shown in FIG. 5, the buffer memory with the line spacing changed
The contents of DBUF are stored in the display buffer memory VRAM as a character pattern, that is, the screen is rewritten. As a result, as shown in FIG. 7, as shown in FIG.
The character strings of the 3rd line and the 3rd line are stored in the 2nd line of the display buffer memory VRAM in a state where they are overlapped. Since the standard value “1” is adopted as the value, it is displayed on the display CRT based on the standard value.

Next, the procedure for storing the character pattern as shown in FIG. 7 in the display buffer memory VRAM will be described in more detail with reference to the flowchart of FIG.

First, in step 91, the stored contents of the display buffer memory VRAM are all erased. Next, in step 92, the content counters N, P and L of the microprocessor CPU are initialized. The counter N indicates the line number on the buffer memory DBUF that is being processed, and its initial value is "1". The counter P indicates a storage position for storing a character pattern obtained by the character generator CG in the display buffer memory VRAM, and can hold a value in the range of line numbers 1 to 50 on the display buffer memory VRAM. The initial value is "1". Further, the counter L is a display buffer memory VRAM.
It holds the line spacing value above and is used when storing the character pattern of the next line. The initial value is set to "8" as the standard value.

When the counters N, P and L are initialized in step 92 as described above, the process proceeds to step 93.

In step 93, the character pattern corresponding to the character string of the line number of the buffer memory DBUF indicated by the counter N is stored in the position of the line number of the display buffer memory VRAM indicated by the counter P. The character pattern is obtained from the character generator CG in the form of 8 bits × 8 bits corresponding to the character code.

Next, proceeding to step 94, the above-mentioned CPU which is a judgment means for judging which value is the character in the first column (first column) of each line, that is, the line spacing value designated by the second line spacing designating means. Executes the control procedure stored in the ROM, and different processing is performed as follows depending on the determined line spacing specification value.

That is, when "0" is designated as the line spacing value, the routine proceeds to step 95, where the counter L is set to "8" as the standard value,
The value of the counter P indicating the display start position of the next line is not changed and the process proceeds to step 98.

In addition, the line spacing specification value is a space If so, the process proceeds to step 97, where the value of the counter P indicating the display start position of the next line is the counter L set previously.
The value is changed to a value (P + L) obtained by adding the value of, and the process proceeds to step 98.

Further, when another line spacing value, for example, "2 to 8" is designated, the routine proceeds to step 96, where a value eight times the designated line spacing value is set as the value of the counter L.
The routine proceeds to 97, where the value of the counter P indicating the display start position of the next line is changed to the value (P + L) obtained by adding the value of the counter L obtained at step 96, and the routine proceeds to step 98.

By the above processing, the display start position on the display CRT for displaying on the next line is set.

In step 98, 1 is added to the counter N to indicate the row position of the buffer memory DBUF to be displayed next, and the value of the counter N is changed. Next, in step 99, since the maximum number of rows of the buffer memory DBUF in this embodiment is 5, it is determined whether the value of the counter N is larger than "5", that is, all rows of the buffer memory DBUF. Is stored in the display
Determine whether it was displayed on the CRT. In step 99, when the value of the counter N is smaller than "5", the process returns to step 93 to repeat the above-mentioned operations, while the counter N
When the value of becomes larger than "5", these operations are ended. Therefore, the CPU described above constitutes the line spacing changing means by executing step 94, step 95, and step 96 included in the control procedure stored in the ROM.
The above-mentioned CPU executes the above-mentioned CRTC by executing steps 93 to 99 included in the control procedure stored in the ROM.
Together with this, it constitutes output control means.

With the above operation, as shown in FIG. 7, the second line of the display buffer memory VRAM has the contents “A, C, E, G” and the third line shown in FIG. Content of "A, C, E,
“A, A, C, C, E, E, G,
The character pattern is stored in the state of "G". Further, since the counter L is "8" in the third and subsequent rows of FIG. 7, the contents of the fourth and subsequent rows shown in FIG. 5 are stored as standard inter-row values. Therefore, the contents stored in the display buffer memory VRAM shown in FIG. 7 are displayed as they are on the display CRT.

As described above, in the present embodiment, "0-9" and the space are specified as the line spacing specification value. However, it is needless to say that the range is not particularly limited. For example, if two characters can be used as the line spacing specification value by using the first and second columns of each line of the buffer memory DBUF, a wider range of line spacing can be specified.

In addition, in the present embodiment, the line spacing value is treated as the interval with the next line, but it may be treated as the interval with the preceding line. Further, in the present embodiment, the line spacing specification of the next line whose line spacing value is "0" is a space. , Was configured to use a fixed value as the standard value, but instead of that, the line spacing value "0" or space used up to that point was used. It may be configured to use a value other than.

[Effect] As described above, according to the present invention, the storage means for storing a character string, the display means for displaying the character string, and the entire character string when the character string is output to the display means. First line spacing instructing means for instructing a line spacing, second line spacing instructing means for designating an arbitrary line of the character string and instructing a line spacing after the designated line, and second line spacing instructing means And a determination means for determining the value of the line spacing designated by the above, and the result of the determination by the determination means is that the value of the line spacing designated by the second line spacing designating means indicates that the designated line is the preceding or succeeding line. When it is a value that indicates overlapping, the line spacing of the designated line is changed to the line spacing designated by the second line spacing designating means, and the line spacing after the designated line is set to the first spacing. Line spacing changing means for setting the line spacing designated by the line spacing designating means, and Characters to be output are provided because the display means includes an output control means for outputting the character string based on the line spacing designated by the first line spacing designating means and the second line spacing designating means. When changing the line spacing after any row in a column, if the row indicated by the row spacing has a value that overlaps the previous or next row,
The line spacing can be valid only for the specified line, and the line spacing after that can be used as the original line spacing.

Therefore, according to the present invention, for example, in the case of overlapping output of characters, it is possible to make it work as an effective value only for the designated one line, so that the overlapping output is performed over many lines due to an erroneous operation by the operator. It becomes possible to prevent.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an example of the configuration of the character processing device of the present invention, FIG. 2 is a block diagram showing an embodiment of the character processing device of the present invention, and FIG. 3 is a configuration of the buffer memory shown in FIG. FIG. 4 is an explanatory view showing an example, FIG. 4 is an explanatory view showing an example of an initial state of the buffer memory shown in FIG. 2, and FIG. 5 is an explanation showing an example of a storage state of the buffer memory shown in FIG. FIG. 6 is an explanatory view showing an example of the configuration of the display buffer memory shown in FIG. 2, and FIG. 7 is a storage of the display buffer memory according to the operation result based on the flowcharts of FIGS. 8 and 9 described later. FIG. 8 is an explanatory diagram showing an example of a state, FIG. 8 is a main flow chart showing an operation example of the device of the present invention shown in FIG. 2, and FIG. 9 is a sub flowchart showing a more detailed operation example of the device of the present invention shown in FIG. It is a flowchart. 1 ... input means, 2 ... line value changing means, 3,4 ... storage means, 5 ... display means, CPU ... microprocessor, KB ... keyboard, ROM ... read-only memory, CR ... cursor Register, RAM ... Random access memory, VRAM ... Display buffer memory, DBUF ... Buffer memory, CRTC ... Display control unit, CRT ... Display, CG ... Character generator.

Claims (1)

[Claims] 1. A storage unit for storing a character string, a display unit for displaying the character string, and a first unit for instructing the entire line spacing of the character string when the character string is output to the display unit. Line spacing instructing means, a second line spacing instructing means for designating an arbitrary line of the character string and instructing a line spacing after the designated line, and a line spacing instructed by the second line spacing instructing means. And a judgment means for judging a value, and a value of the line spacing designated by the second line spacing designating means as a result of the determination means is a value indicating that the designated row overlaps with the preceding or succeeding row. In some cases, the line spacing of the designated line is changed to the line spacing designated by the second line spacing designating means, and the line spacing after the designated line is designated by the first line spacing designating means. A line spacing changing unit for setting a line spacing, the first line spacing instructing unit, and Based on the line spacing indicated by the second rows instructing means, character processing apparatus characterized by comprising an output control means for outputting the character string on the display means.