JPH03224057A - Information processor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information processing device that can create and edit documents and has arithmetic functions.

Numeric Hand [Prior Art] Conventionally, a document processing device is called a word processor, and it is known that a document is created and edited by inputting character information.

[Problems to be Solved by the Invention] In such document processing devices, key operations for the user to input mathematical formulas are extremely troublesome.

This key operation procedure will be explained using FIG. 10.

For example, when inputting the mathematical expression 5X5X7, the user keys in the symbol A representing J.

Next, after inputting a predetermined number of straight line symbols -, the number (5
, 6, 7, ) and the multiplication sign (x) in the order of character position. Furthermore, if there is a division symbol or the like among the root symbols, the root symbol is created by performing image synthesis of the root symbols. In this way, in order to input a mathematical formula, the user must create the characters and symbols in the mathematical formula using the symbol key image synthesis processing function of the document processing device.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide an information processing device that can simplify the character input process for a user involved in inputting mathematical expressions.

[Means for Solving the Problems] In order to achieve such an object, the present invention provides an information processing device capable of calculating mathematical formulas and creating documents, which inputs an instruction to input characters of a mathematical formula. a first input means, a second input means for inputting an operation instruction for calculating the formula, a storage means for storing the operation instruction inputted from the second input means, and a second input means for inputting an operation instruction for calculating the mathematical formula; The present invention is characterized by comprising character processing means for converting the arithmetic instruction stored in the storage means into a character code string representing the content of the arithmetic instruction when an instruction to input characters of a mathematical formula is given.

[Function] The present invention focuses on the fact that when executing a calculation on a mathematical formula, the calculation instructions are input in the order in which the formula is written, and the number of keystrokes for this is small. Enter characters in mathematical expressions by converting to the corresponding character code string.

As a result, the user's instruction operation for inputting characters of mathematical formulas can be simplified.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the basic configuration of an embodiment of the present invention.

In FIG. 1, a dashed-dotted line block 1000 indicates an information processing device capable of calculating mathematical formulas and creating documents.

100 is the first input for inputting the instruction to input the characters of the formula.
It is an input means.

Reference numeral 200 denotes a second input means for inputting an operation instruction for calculating the above-mentioned formula.

Reference numeral 300 stores the arithmetic instructions input from the second input means (storage means).

Reference numeral 400 denotes a character processing means for converting an arithmetic instruction stored in the storage means into a character code string representing the content of the arithmetic instruction when an instruction to input characters of a mathematical formula is given from the first input means.

FIG. 2 shows an example of a circuit configuration according to an embodiment of the present invention.

In the figure, 1 is the CR used in the Rusk scan method.
2 is a video RAM (VRA) that stores display character pattern information for one screen in the form of dot information.
M). 3 writes pattern information to VRAM2, reads pattern information from VRAM2,
This is a control unit (display controller) that executes control for outputting to the CRT display unit 1. 4 is a printer for outputting the created document, and 8 is a main memory for storing control programs and document data to be created as shown in FIGS. 3, 4, and 5, which will be described later. A microprocessor (MPU) 7 performs main control of this device.

Connected to the MPU 7 are a keyboard input device (KBD) 5 for inputting character data, etc., and a pointing device (PD) 6 for specifying positions on the CRT and inputting and editing graphic data. There is. 1
0 is a hard disk device in which document files, spreadsheet files, and character fonts are stored. 11
is a floppy disk storage device for storing document files and the like. Each of these building blocks is I10
They are connected by bus 9.

In this embodiment, the keyboard input device 5 operates as a first input means and a second input means.

Further, the MPU 7 operates as a character processing means. Furthermore, a hard disk storage device IO operates as a storage means.

In this embodiment, attention is paid to the fact that the document processing device executes mathematical formula calculations when creating a table, and the mathematical formula calculation instructions inputted from the keyboard input device 5 are stored in the hard disk storage device 10 ( Next, when creating a document, the MPU 7 converts the input arithmetic instructions into a character code string, thereby simplifying the input of mathematical formulas by the user involved in document processing.

For this purpose, in this embodiment, as shown on the display screen P in FIG. The mathematical formula is displayed as character information 23 on the display screen R in FIG. 3 in a character pattern.

The operation of the circuit shown in FIG. 2 to accomplish this function will now be described.

It is assumed that the previously created table of FIG. 3 is stored in the spreadsheet file 1 of the hard disk storage device 10. In addition, the file information in the specified area 16 in FIG. The data is stored in the hard disk drive 10 in a code format as shown in data X in FIG.

The user can use the display screen Q in Figure 3 in document creation mode.
, an instruction is given to switch the screen from the keyboard input device 5, and a table using the formula to be copied, that is,
The display screen P shown in FIG. 3 is displayed using a conventional method. Next, the area 16 is specified using the coordinate input device 6, and then the operation instruction for the mathematical formula (E7), which is stored in advance in the hard disk storage device IO, corresponding to this area is read out and cut out into the main memory 8 using the MPLI 7. (Step 5 in Figure 4)
100).

Next, the configuration contents of the read arithmetic instruction are analyzed by the MPU 7, and as shown in FIG. 9, this arithmetic instruction is converted into a code format for character processing (step 52 in FIG. 4).
00).

Next, the MPU 7 returns the display screen to the character processing mode and displays the above-mentioned converted character code string in a character pattern (F7) as shown on the display screen R of FIG. 3 (step 5300 of FIG. 4).

FIG. 5 shows the detailed processing procedure of step 5100 in FIG.

That is, the range of the cell (area) is specified using the coordinate input device 6 (steps Sl, S2). The rectangular area in the display screen (display screen P in FIG. 3) thus obtained is displayed in reverse (step S3), and the range of the designated area is determined by the user's input of the ENTER key (step S4). ). Copy the operation instructions in the determined area to the buffer in the main memory 8 (step S5
).

In this example, the mathematical formulas used to create the document are collectively designated on the table display screen, and the extracted data is stored with the extracted file number and file name added.

Next, FIG. 6 shows detailed processing for expanding a mathematical operation instruction into a character code string.

That is, after displaying the above-mentioned cut-out data file on the display screen, the MPU 7 selects an operation instruction in the cut-out data file according to the designation from the coordinate input device 6 (steps 86 to S7). Next, the MPU 7 determines that the selected data is cut-out data from a table and that the data type is a mathematical formula based on the code content of the data, and converts the selected cut-out data into character data (steps S11 to 516).

The details of this conversion process to character data are shown in FIG.

That is, the selected cut-out data is read from the buffer in the main memory 8, and the type of arithmetic instruction indicated by the cut-out data is identified by comparison with a prescribed code.

For example, for the calculation instruction J, first, as shown in code detected, and the root command 101 has a code 201 (
(see Figure 9). Subsequently, in step 25, the read division command 102 is converted into a command 202 indicating the beginning of a fraction symbol. Thereafter, numerical codes are converted into numerical codes and division codes are converted into fraction symbols according to the calculation commands of the mathematical expressions. Also, variable symbols are converted into the characters represented by the variables. Furthermore, when a code indicating the end of the expression is detected, a symbol indicating the end of the fraction symbol or root symbol is added. By executing such a procedure, the FV arithmetic instruction is converted into a character code string from code X to code Y in FIG. 9 (step 530).

As explained above, in this embodiment, the calculation instructions input for the purpose of calculation are stored even after the calculation is executed, and the calculation instructions (mathematical formula) are converted into character code strings by automatically converting the calculation instructions into character code strings. Enter as a column.

Therefore, the user only has to perform the process of selecting an arithmetic instruction for character input, and there is no need to perform the complicated process of creating mathematical symbols as in the past.

In addition to this embodiment, the following examples can be given.

■) When the keyboard input device 5 is equipped with a dedicated key for instructing calculation of mathematical expressions such as sine (Sin) and logarithm (Log), when the sign key is pressed in the document processing mode, for example, In response to the key code input, the MPU 7 may create the character code string "Sin" according to the procedure shown in FIG.

2) Furthermore, when the number of characters included in a root symbol may be different, such as a root symbol, the length of the straight portion of the root symbol can be determined by counting the number of characters.

For mathematical symbols having variable lengths, character synthesis may be performed in accordance with the character font of the document processing device.

3) In this embodiment, a document processing device is used as an example, but it goes without saying that the present invention can be applied to a computer such as a personal computer having a document processing function.

[Effects of the Invention] As described above, according to the present invention, when inputting a numerical formula in characters, the formula is input in the form of an operation command, and then,
Since it is automatically converted into a character code string, it is possible to reduce and simplify the number of user inputs. Furthermore, since it becomes possible to divert arithmetic instructions input for the purpose of calculation to character input, it is also possible to obtain the effect that the time for character input processing can be shortened.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the basic configuration of an embodiment of the present invention, Fig. 2 is a block diagram showing a specific circuit configuration of an embodiment of the invention, and Fig. 3 is an explanatory diagram showing an example of display related to character input of mathematical formulas. , FIG. 4 is a flowchart showing the main control procedure for inputting characters of mathematical formulas executed by the MPU 7 in FIG. 2, and FIGS.
The figure is a flowchart showing the detailed procedure of the process shown in Fig. 4, Fig. 8 is an explanatory diagram showing the storage format of the arithmetic instruction to be converted in the embodiment of the present invention, and Fig. 9 is the character code of the arithmetic instruction in the embodiment of the present invention. An explanatory diagram illustrating an example of conversion to , and an explanatory diagram illustrating a character input procedure for a mathematical formula in the 101st Inaki example. ■...CRT/display section. 5... Keyboard input device (KBD) 6... Coordinate input device (PD), 7... Central processing unit (MPU), 8... Main memory, lO... Hard disk storage device. Figure 4 Figure S

Claims (1)

[Scope of Claims] 1) In an information processing device capable of calculating mathematical formulas and creating documents, a first input means for inputting an instruction to input characters of a mathematical formula; and a calculation instruction for calculating the mathematical formulas. a second input means for inputting a formula; a storage means for storing arithmetic instructions input from the second input means; and when an instruction to input characters of a mathematical formula is given from the first input means, the storage means 1. An information processing device comprising character processing means for converting an arithmetic instruction stored in the computer into a character code string representing the content of the arithmetic instruction.