JPH0728812A - Document preparing device - Google Patents

Abstract

PURPOSE:To protect a character string which must not be deleted and changed and to allow the deletion and change for other character strings. CONSTITUTION:By operating a start location key 1a by setting a cursor to the head for an arbitrary character string in the document data which is already stored in an edition buffer 2a and is displayed on a display device 3 and operating a termination location key 1b by setting the cursor to the end, the protection area for the character string is designated in a protection area start and termination information buffer 2b. When a retreat key 1d, a delete key 1e and a character key 1f are operated, the operation is canceled when the cursor is located in a protection area 4. When the cursor is not located in the protection area 4, the processing by the operation is allowed and the data of the start location and the termination location of the protection area start and termination buffer 2b is corrected for maintaining the correspondence of the location of the character string after deletion and change within the edition buffer 2a and the protection area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document creation device such as a Japanese word processor, and more particularly to a technique for protecting document data.

[0002]

2. Description of the Related Art In document data created by a conventional document creating apparatus such as a Japanese word processor, characters or the like that have already been input are erased by operating a backward key or a delete key. Also, it can be changed by overwriting. Here, the backward movement is a process of deleting one character immediately before the cursor position,
Erasing is a process of deleting one character at the cursor position.

[0003]

The conventional document creating apparatus does not have a function of distinguishing a character string that may be erased / changed from a character string that should not be erased / modified. There is no problem in deleting / changing the input character string due to a key typing error, deleting an unnecessary character string in editing, or changing an incorrect character string.
However, there is a risk that even if an important character string is entered correctly and does not need to be deleted or changed and should not be deleted or changed, it may be accidentally deleted or changed due to an inadvertent key operation mistake. The reason is that there is no function to distinguish between a character string that can be erased and changed and a character string that cannot be erased and changed.

The present invention was devised in view of such circumstances, and a character string that a user should not delete or change is backed up, deleted, or overwritten by an operation mistake. However, the purpose is to enable the processing to be performed and protect the character string.

[0005]

A document creating apparatus according to the present invention includes means for designating a protected area for an arbitrary character string in stored document data and means for erasing / changing characters in the stored document data. A means for determining whether or not the character to be erased / changed is in the protection area when an operation is performed, and if the result of the determination is that the character to be erased / changed is not in the protection area, character deletion / change is performed. And the position information that determines the protected area and the protected area after the processing when the character deletion / modification processing is allowed. And a means for retaining the original relationship by correcting the relationship.

[0006]

[Function] Although a protected area is specified for an arbitrary character string and characters other than the protected area can be erased and changed,
In the protected area, cancel the operation of deleting and changing characters,
Prohibition of deletion / change. When allowed, characters are erased / changed and the storage position is changed, but the state in which a character string to be protected is specified in the protected area is retained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a document creating apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a document creation device (Japanese word processor). In FIG. 1, 1 is a key input device (keyboard), 2 is an editing device,
3 is a display device.

The key input device 1 generates a key code when a key is pressed, and a start position key 1a for designating a start position of a character string to be protected and an end position of a character string to be protected. End position key 1b, cursor movement key 1c for specifying a character input position and a character to be edited, backward key 1d, delete key 1e, character key 1f for inputting characters, numbers, symbols, etc. It has various keys.

The editing device 2 includes a CPU (central processing unit), ROM (read only memory), RAM (random access memory), FDD (floppy disk driver), HDD (hard disk driver), etc. (all shown). No). It also has an edit buffer 2a for storing the input character string, and a protected area start / end information buffer 2b for storing the start position and end position of the protected area for the protected character string. There is.

The start position and end position of the protected area to be stored in the protected area start / end information buffer 2b are determined by the number of characters from the beginning of the document. For example, the protection n ₁ (character position) as the data start position in the region start and end information buffer 2b is stored, and n ₂ (th character) is stored as the data end position. In this case, among the document data stored in the edit buffer 2a, a character string existing in the region from the n ₁ th character to n ₂ th character is the protected area.

That is, the protected area is the edit buffer 2a.
It is determined by the character string in and the position information in the protection area start / end information buffer 2b.

Backward key 1d, erasure key 1e and character key 1
When the document data stored in the edit buffer 2a is updated according to the operation of f, the contents of the protected area start / end information buffer 2b are also updated every time the key operation is performed.

The display device 3 is a CRT (CRT) or L
It consists of a CD (liquid crystal display panel), etc., and displays the input character string and the edited character string.

Next, a simple operation example will be described with reference to FIGS.

As shown in FIG. 2A, the edit buffer 2a is provided with a character string [a,
b, c] and a character string [A, B, C] that must not be deleted or changed are stored. The fourth character is line feed data. Character string to be protected [A,
B, C] are the fifth to seventh characters counted from the beginning of the sentence.
Therefore, as shown in FIG. 2B, in the protected area start / end information buffer 2b, "5" is stored as the start position data and "7" is stored as the end position data. Document data is displayed on the display device 3 as shown in FIG.

In FIG. 2 (c), when the cursor is positioned in the hatched protected area 4, either the backward key 1d or the delete key 1e is operated, or the character key 1f is pressed. If you do, those operations are ignored. That is, the erase / change process is canceled for the character string [A, B, C] to be protected.

The erasing / modifying process performed after the protected area 4 is as usual. FIG. 3 shows the backward processing performed before the protected area 4, FIG. 4 shows the erasing processing, and FIG. 5 shows the character input processing.

First, FIG. 3 (reverse processing) will be described. In the state of FIG. 2, it is assumed that the character "a" is erased by the backward movement process. In the screen display state of FIG. 2C, the cursor movement key 1c is operated to place the cursor at the position of the character "b". Then, when the backward key 1d is operated, the character "a" is erased. As shown in FIG. 3A, the storage positions of the remaining character strings are moved up one by one in the edit buffer 2a. Since the first character "a" has been deleted, the first character "b", the second character "c", the fourth character "A", the fifth character "B" , "C" in the 6th character
Are moved up and stored. Then, accordingly, as shown in FIG. 3B, the data of the start position of the character string [A, B, C] to be protected is changed from "5" to "4".
Then, the data at the end position is reduced by 1 from "7" to "6". The screen display state is as shown in FIG.

Next, FIG. 4 (erasure process) will be described. Figure 2
In this state, it is assumed that the character “b” is erased this time by the erasing process. In the screen display state of FIG. 2C, the cursor movement key 1c is operated to place the cursor at the position of the character "b". Next, when the delete key 1e is operated, the character "b" is deleted. As shown in (a) of FIG.
In the edit buffer 2a, the storage positions of the remaining character strings are moved up one by one. The first character "a" remains unchanged. Since the second character "b" has been deleted, "c" is the second character, "A" is the fourth character, "B" is the fifth character, and "C" is the sixth character. They are moved up and stored. Then, accordingly, as in the case of the backward movement, as shown in FIG. 4B, the character string to be protected [A,
The data of the start position of [B, C] is reduced from “5” to “4”, and the data of the end position is reduced from “7” to “6” by one. The screen display state is as shown in FIG.

Next, FIG. 5 (character input processing) will be described.
In the state of FIG. 2, the character “a” is input by the character input process.
It is assumed that a character "d" is newly inserted between and the character "b". In the screen display state of FIG. 2C, the cursor movement key 1c is operated to place the cursor at the position of the character "b". Next, when the "d" key of the character keys 1f is operated, the character "d" is inserted. As shown in FIG. 5A, in the edit buffer 2a, the storage position of the character string after the insertion position is moved down by one. The first character "a" remains unchanged. The second character "d" is newly stored. Then, "b" is the third character, "c" is the fourth character, "A" is the sixth character, "B" is the seventh character,
"C" is rolled down and stored in the eighth character.
Then, accordingly, as shown in FIG. 5B, the data of the start position of the character string [A, B, C] to be protected is changed from "5" to "6" and the data of the end position is "7". It is increased by 1 from "" to "8". The screen display state is as shown in FIG.

Next, a more detailed operation will be described with reference to the flowcharts of FIGS.

When a key is operated in the key input device 1, the key input device 1 outputs a corresponding key code to the editing device 2. When the editing device 2 inputs a key code, the editing device 2 performs an editing process and stores a character corresponding to the key code in the editing buffer 2a. Further, the character string stored in the edit buffer 2a is displayed on the display device 3.

Here, when the character string already stored in the edit buffer 2a is to be protected from deletion / change, the cursor moving key 1c is operated to move the cursor to the beginning of the character string to be protected. This corresponds to the operation from step S1 to step S2. Then, the start position key 1a is operated. Then, the process proceeds to step S3, the character at the cursor position is calculated from the beginning of the sentence,
In step S4, the data at the start position of the protection area is stored in the protection area start / end information buffer 2b. Then, the cursor movement key 1c is operated to move the cursor to the end of the character string to be protected, and the end position key 1b is operated. Then, the process proceeds to step S5, the character position of the character at the cursor position from the beginning of the sentence is calculated, and the data of the end position of the protection area is stored in the protection area start / end information buffer 2b in step S6. As described above, the area of the character string to be protected, which should be protected from erasure / change, is fixed.

When the backward key 1d or the delete key 1e is operated, the process proceeds to step S7, where the character at the current cursor position is calculated from the beginning of the sentence, and in step S8 the value and the protected area are calculated. Start / end information buffer 2
Compare with the contents of b. As a result of the comparison, when the value of the number of characters from the beginning of the sentence at the cursor position falls within the range of the protected area, the process returns to step S1 and the backward process and the erasing process are canceled. By this canceling process, the character data in the protected area is not erased and is protected from the backward process and the erasing process.

In the judgment of step S8, when the delete key 1e is operated, whether the value of the character position of the cursor from the beginning of the sentence is between the start position and the end position of the protected area. When the backward key 1d is operated, the value of the character position of the cursor from the beginning of the sentence is between the position where 1 is added to the start position of the protected area and the position where 1 is added to the end position. Judgment should be made based on whether or not

If the judgment in step S8 does not fall within the range of the protected area, the process proceeds to step S9 to execute the backward process or the erasing process to store the processed data again in the edit buffer 2a. Then, in step S10, for the contents of the protection area start / end information buffer 2b having a value larger than the number of characters from the beginning of the sentence to the character erase position by backward or erasure, in other words, the protection area start / end information buffer When characters are erased before the protected area specified by the start position and end position of 2b, as shown in the examples of FIGS. 3 and 4,
The value of the data of the start position and the end position is decreased by 1. As a result, even if the character is erased in front of the protected area, the correspondence between the character string to be protected in the character string of the edit buffer 2a and the data for specifying the area is maintained as it is. become.

Next, the case of character input will be described.
When the character key 1f is operated, the process proceeds to step S11, where the character at the current cursor position is from the beginning of the sentence is calculated, and in step S12 the value and the protected area start / end information buffer 2b are stored. Compare with the content. As a result of the comparison, when the value of the number of characters from the beginning of the sentence at the cursor position falls within the range of the protected area, the process returns to step S1 and the character input process is canceled. By this cancellation processing, new character data is not inserted into the character data in the protected area, and character input (insertion) is performed.
Will be protected from

In the judgment of step S12,
It is determined whether the value of the character position of the cursor from the beginning of the sentence is between the position obtained by adding 1 to the start position of the protected area and the end position.

If the judgment in step S12 does not fall within the range of the protected area, the process proceeds to step S13, character input processing is executed, and the processed data is stored again in the edit buffer 2a. Then, in step S14, with respect to the contents of the protection area start / end information buffer 2b having a value greater than or equal to the number of characters from the beginning of the sentence to the character input position, in other words, the protection area start / end information buffer 2b. When a character is input before the protected area specified by the start position and end position of the, the data value of the start position and the end position is increased by 1 as shown in the example of FIG. To do. As a result, even if a character is input before the protected area, the correspondence relationship between the character string to be protected in the character string of the edit buffer 2a and the data for specifying the area is maintained as it is. become.

[0031]

As described above, according to the present invention, it is possible to provide a process of protecting a character string that a user must not delete or change from the operation of deleting or changing the character string. Even if the character string to be protected has been deleted or changed due to a mistake or the like, it can be protected by canceling it.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a buffer and an initial state of display showing a simple operation example of the embodiment.

FIG. 3 is a state diagram of a buffer and a display when a backward process is performed in an operation example of the embodiment.

FIG. 4 is a state diagram of a buffer and a display when erasing processing is performed in the operation example of the embodiment.

FIG. 5 is a state diagram of a buffer and a display when a character is input in the operation example of the embodiment.

FIG. 6 is a flowchart for explaining the operation of the embodiment.

FIG. 7 is a flowchart for explaining the operation of the embodiment.

FIG. 8 is a flowchart for explaining the operation of the embodiment.

[Explanation of symbols]

 1 --- Key input device 1a-Start position key 1b-End position key 1c-Cursor movement key 1d-Back key 1e-Erase key 1f-Character key 2 -... Editing device 2a-Edit Buffer 2b …… Protection area start / end information buffer 3 ………… Display device 4 ………… Protection area

Claims (1)

[Claims] 1. A means for designating a protected area for an arbitrary character string in stored document data, and a character to be erased / changed when a character erase / change operation is performed on the stored document data. Means for deciding whether or not is in the protected area, and as a result of the decision, when the character to be erased / changed is not in the protected area, the character erasing / changing process is allowed, and when it is in the protected area, the character is erased・ Means for canceling the change operation and means for correcting the relationship between the character string to be protected after processing and the position information that determines the protected area of the character string when the character erasing / modifying process is permitted and holding it as it is. A document preparation device comprising: