JPS6026235B2 - How to protect diagram data - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for protecting chart data.

More specifically, the present invention relates to a method for protecting diagram data of a word processor having a tabulation function. Word processors are known that have a display memory that corresponds one-to-one with characters, symbols, or drawing patterns on a CRT.

In such word processors, the contents (codes) of the display memory are constantly scanned, characters, symbols, or drawing patterns corresponding to the codes are read out from the built-in memory (character generator) and displayed on the CRT. It looks like this. Therefore, if you want to change the display content, you only need to change the content of the display memory. Furthermore, if you want to add tabulation ability to the word processor mentioned above, do the following. That is, the basic patterns necessary to construct a table or graph are determined. Next, store these basic patterns in the built-in memory (character generator),
Assign the same code as the character data. By performing the above operation, pattern data can be handled in exactly the same way as character data.In other words, by writing the character data and the code of the drawing pattern in the display memo IJI, the desired diagram can be displayed on the CRT. You can create attached sentences.

However, in the case of such word processors, the character code and pattern code are not separated, so if you delete or add a character in the middle, the deletion and addition will affect the diagram as well. The shape of the chart is distorted. The present invention has been made in view of these points, and provides a method that does not affect the contents of chart data even when characters are deleted or added.

Hereinafter, the present invention will be explained in detail with reference to the drawings. FIG. 1a is a diagram showing an example of characters and charts displayed on the FRT.

In the figure, the first line is made up of a total of 12 units, including display units a, to a, and 2. Among these display units, characters a4-a, o are in a・~a3, all~a・2.
A chart is displayed. Therefore, characters and chart codes corresponding to the figure are also written in the display memory. Now, from this display, characters that are the same as the display unit r are deleted. If the contents of the display memory at the corresponding location are simply deleted, the display on the CRT will be as shown in FIG. 1b. Since the character code and pattern code are not independent, the bottom of the display unit a moves one step to the left. For this reason,
As shown in the figure, the chart is broken. In order to avoid such problems, you can do the following.

That is, in FIG. 1a, first, the contents of display unit a2 are deleted, and the contents of display unit a3, which is located one step before the front of the chart, are shifted one step to the left. Next, add 1 from the end of the diagram to the blank space and place a3.
Display units a, . at the character positions. Write the contents of. Next, shift the contents of a, 2 and below one step to the left.
By using such a method, the graphic code a4~
It is possible to delete characters without assigning them to the a and o positions. FIG. 1c is a diagram showing the CRT display after character deletion.
Next, a method for adding characters will be explained.

FIG. 2a is a diagram showing an example in which characters and charts are displayed on a CRT, similar to FIG. 1. Now, assume that the character "river" is inserted between display units d and d2. The insertion procedure is performed as follows. First, the character code of the display unit located one step before the front of the chart is moved to the first position from the end of the chart. The display unit d, which was in the first position from the end of the diagram. shifts one step to the right. The same applies to d,2 or less. Next, shift it to the original position. Write the new character ``River'' in the original Q position. By the above operations, characters can be added without affecting the position of the chart. FIG. 2b shows the CRT display after adding characters. The method for deleting and adding characters has been described above for the case where there is one figure or table, but the method need not be limited to the case where there is one figure or table, and may be similarly applied to the case where there are a plurality of figures or tables. For example, consider a case where there are three charts. Deleting or changing the text at the front of the first figure or table
If only the 1st chart is used, this method must be applied to the 2nd and 3rd charts at the same time. On the other hand, deleting or adding characters displayed between the second and third diagrams only affects the third diagram. FIG. 3 is a block diagram of essential parts of an embodiment of a word processor for carrying out such a method. In the figure, 1 is a keyboard equipped with character keys and function keys for inputting characters and information, and the input information is output as a digital signal and sent to the central processing unit (hereinafter referred to as CPU) via an interface 2 and a bus 3. ) 4. A program memory 5 stores programs necessary for document creation.

The CPU 4 can appropriately propose and execute this program. The created document (including not only character codes but also diagram codes), so-called text, is stored in the table memory 6. The document to be displayed is transferred to the IJ fresh memory under the control of the CPU. Each code in the refresh memory 7 is converted into a dot pattern via a character generator 8 and output. This character generator 8 has drawing patterns in addition to character patterns. The display device receives a control signal from the CPU and a dot pattern from the character generator 8 through the interface 9, and displays the document (characters, diagrams, etc.) in the refresh memory 7 on the CRTIO.

In such a configuration, document creation is performed in the same manner as in the past, except in the case described above (when characters and charts are mixed).

Now, let us assume that characters and charts as shown in FIG. 1A are created by inputting information from the keyboard 1 and are displayed on the CRT.

The case of deleting "identical characters" in the display unit a2 is as follows.The keyboard 1 instructs the CPU to execute the deletion function.The CPU then executes the deletion-related program prepared in the program memory 5. The deletion is executed according to the flow shown in Figure 4.In other words, specify the deletion mode by operating the keyboard 1, and after moving to the deletion mode, delete by moving the cursor on the CRT. Indicates the position of the character (in this case, "kawa" in display unit a2). This indicates the text pointer (the location where the character code is stored). ■ Advance the text pointer one position from this position.

■ Check whether the advanced position is the end of the text,
If it is the end, the deletion operation is terminated unconditionally, and if it is not the end of the text, it is checked whether the position is within the diagram.

■ If it is not within the chart, shift the text data forward one position and then return to ■.

■ If it is within a chart, write the data one after the end of the chart one data before the start of the chart, and then return to ■.

The operations from ■ to ■ are repeated until the end of the text.

As mentioned above, this will cause the position of the chart to shift,
Then, as shown in Figure 1c, it is possible to delete just a character and then move up the characters after that character. When inserting a character, specify the insertion mode and specify the insertion character position using the same operations as when deleting.

CP Yama executes the insertion program with the flow shown in FIG. That is, ■ Advance the text pointer by one position from this position.

■ Check whether the advanced position is the end of the text,
If it is the end, the insertion operation is ended unconditionally, and if it is not the end of the text, it is checked whether the position is within the diagram.

■If it is not within the diagram, shift the text data one position later, and then return to ■.

■ If it is within a chart, write the data one before the start of the chart one data after the end of the chart, and then return to ■.

The operations from ■ to ■ are repeated until the end of the text.

As a result, as described above, new characters can be inserted in the horizontal position, for example, as shown in Figure 2c, without shifting the position of the chart.

As described in detail above, according to the present invention, it is possible to realize a method for protecting chart data in which the content of chart data is not affected even when characters are deleted or added.

[Brief explanation of the drawing]

1 is a diagram showing a method for deleting characters, FIG. 2 is a diagram showing a method for adding characters, FIG. 3 is a block diagram showing an embodiment of a word processor for implementing the method of the present invention, and FIG. 4 is a diagram showing a method for adding characters. FIG. 5 and FIG. 5 are diagrams showing the flow of operation. a, ~a position, d, ~d, 2...display unit, 1...keyboard
2, 9...interface, 3...bus, 4...CPU
, 5... program memory, 6... table memory, 7... refresh memory, 8... character generator, 101 CRT. Figure 1 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 One-on-one with characters/symbols or drawing patterns on CRT
In addition to character patterns, word processors that have display memory compatible with It is equipped with a structured character generator, a program memory in which a program with deletion and insertion functions is stored, and a table memory for storing created documents, and can create documents containing a mixture of text and figures. (b) When deleting a character, delete the character and move the characters after that character forward one by one, and when moving, move the characters from the end of the diagram to the front. The character data in the first position is moved to the previous position at the front of the diagram. When moving, the character data in the previous position at the front of the diagram is skipped and moved to the first position from the end of the diagram, so that only the characters are deleted or inserted without changing the position of the diagram. A method for protecting chart data, characterized in that the chart data is moved by