JPS6269358A - Character processor - Google Patents

Abstract

PURPOSE:To delete both of a pair of marks just by indicting one of these two marks with use of a character deletion instructing means, a right-left parenthesis discriminating means, a parenthesis retrieving means and a right-left parenthesis deleting means. CONSTITUTION:The characters are supplied to a document memory by a character input instructing device. Then a right-left parenthesis discriminating device is actuated by a deletion indicating means to discriminate the directions of the parentheses stored in the document memory. Then a parenthesis retrieving means works to retrieve the parentheses in the document memory. Furthermore the retrieved parentheses and the parentheses discriminated by the right-left parenthesis discriminating means are deleted out of the document memory by a right-left parenthesis deleting means. Thus both marks used in a pair can be deleted at a time just by designating one of these paired marks.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a character processing device that can input and delete characters and symbols.

[Prior Art] Conventionally, there have been character processing devices that can input and delete characters and symbols. However, when deleting characters or symbols, for example, if you want to remove parentheses from a string of characters, you must search for and delete the left and right parentheses separately each time, and always delete symbols that are used in pairs. had the disadvantage of being complicated.

[Problems to be Solved by the Invention] The present invention compensates for the above-mentioned drawbacks and provides a character processing device that deletes only one symbol used in a bare symbol and deletes the other symbol at the same time. It's true.

[Means and operations for solving the problem] As shown in FIG. 1, the present invention first inputs characters into a document memory by a character input instructing device, and the left and right parentheses discriminating means is activated by the deletion instructing device to input characters into the document memory. Then, the parenthesis search means operates to search for parentheses in the document memory.Next, both the parentheses searched by the left and right parenthesis deletion means and the parentheses determined by the left and right parenthesis determination means are added to the document. It is deleted from memory.

[Example] The present invention will be described in detail below with reference to the drawings.

FIG. 2 is a diagram showing an example of the configuration of the character processing device of the present invention.

The CPU (Central Processing Unit) controls each device connected via the path line by executing the contents of the program included in the ROM (Read Only Memory) and having the procedures shown in Figures 5 to 7. . A keyboard KB is connected to this pass line, and character information input from this keyboard KB is supplied and stored via the pass line B to a document memory BSM located in a part of the random access memory RAM. To display the stored character information on the LCD (liquid crystal display) display, a character generator CG controlled by the display control device LCDC is used.
Select the font corresponding to the character code from path line B
The font is stored in the display memory LCDM of the display control device. memory RAM
In addition to the document memory BSM described above, there is a temporary storage area such as CRLM indicating the cursor position. Printer PRT
is a device for printing the contents of the document memory BSM described above according to instructions from the CPU.

FIG. 3 is an enlarged detailed view of the keyboard of FIG. 2; This white character key is a key for inputting ordinary characters, and the character code corresponding to the key input here is stored in the document memory and displayed on the LCD. The delete key is used to delete parentheses.

FIG. 4 is a detailed explanatory diagram of the document memory BSM in the RAM in FIG. BSM (2)---Generally expressed as BSM (i).

Under the above configuration, the operation of the embodiment of the present invention is illustrated in FIGS. 5 to 7.
This will be explained with reference to the flowchart shown in the figure and the example shown in FIG.

When this device is powered on, it first proceeds to step S1 in FIG. 5. In step sl, the document memory BSM in the RAM is cleared of space, the cursor is set at the beginning of the document memory BSM, and the cursor position memory CRLM is returned to its initial state. set.

After that, the process advances to step S2, and the state of waiting for the key input from the keyboard KB shown in FIG. move on.

Step S4 performs processing when a character key is operated. In FIG. 6, when a character key is operated, a character code is stored in the document memory BSM corresponding to the cursor position memory CRLM. Thereafter, the cursor advances by one and at the same time the contents of the cursor position memory CRLM also advance by l addresses.

Next, in step S6, a predetermined character code string (determined by the display capacity of the display device) in the document memory BSM is patterned by the character generator CG, and the display control device 5
Store it in memory I and CDM of iLCDC.

Step S5 performs deletion processing, which will be explained with reference to FIG. 6. First, in step 55.1, the character on the cursor is determined. If the result is parentheses, step 55
．． Otherwise, the process proceeds to steps 55.3 to 55.5, but the explanation here will be omitted.

The details of step 55.2 will be explained using the flowchart of FIG. 7 and the actual text example of FIG. 8. First, proceeding to step s5.2.1, the direction of the parentheses on the cursor is determined. As a result, if it is a left parenthesis as shown in Figure 8 (1), the process goes to step s5.2.2 and searches for a right parenthesis in the direction of the end of the sentence.Then, the process goes to step s5.2.3 as shown in Figure 8. (
As shown in 2), delete the right parenthesis and move the following characters one character to the left. Further, the process proceeds to step s5.2.6, where the parentheses on the cursor are deleted, the subsequent characters are packed into one character, and the cursor position is also moved to the left by one character. The result is the state shown in FIG. 8(3).

On the other hand, if the character on the cursor is a right parenthesis as shown in FIG. 8(4), the process goes to step s5.2.4 and searches for a left parenthesis in the direction of the beginning of the sentence. When the left parenthesis is found, step s
Go to 5.2.5, delete the left parenthesis, and change the following characters to 1
Shifts characters to the left and moves the cursor one character to the left. Thereafter, proceed to step s5.2.6. The results are shown in Figure 8 (
6).

Note that in this example, only parentheses () and ``'' were used, but r
", () [], etc. are also effective, and marks such as "Papa" used in English do not detract from the gist of the present invention.

Furthermore, although the display device in this embodiment is an LCD (liquid crystal display), other display devices, such as a C
Even if the RT (cathode ray tube) is used, it does not detract from the gist of the present invention.

[Effect] As described above, according to the present invention, when deleting symbols used in bare, it is possible to delete only one symbol and the other symbol at the same time.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 3 is a schematic diagram of the key tops of the keyboard. FIG. 4 is an explanatory diagram of the memory structure. 5 to 7 are flowcharts showing the process. FIG. 8 is an explanatory diagram showing the actual deletion process. BSM-m-document memory

Claims (1)

[Claims] A character processing device having a character input instruction means for inputting characters and a document memory constituted by the means, comprising a deletion instruction means for deleting characters, and a left and right parenthesis determining means for determining left and right parentheses in the document memory. , a parenthesis search means for searching for parentheses having a direction opposite to the direction of the parentheses determined by the left and right parenthesis discrimination means, and deleting the parentheses searched by the parenthesis search means and the parentheses determined by the left and right parenthesis discrimination means. A character processing device characterized by having left and right parenthesis deletion means.