JPS63108456A - Formula input system - Google Patents

Abstract

PURPOSE:To display a numerical formula of a form close to a numerical formula to be outputted on a display by designating a character size and an attribute in row unit on a display device, collecting the character, in which the base line and size of the character are coincident, into one row and inputting it. CONSTITUTION:For a character, numeral and symbol data inputted by a keyboard KB 15, the control code of the size and attribute for respective rows is designated by the KB 15 and displayed at a CRT 8. Thereafter, the data are read from a text RAM TRAM 5, the character, numeral and symbol data are patterned by a character generating ROMCG 6, and the control code of the size and attribute is sent through an interface 11 to a bit map memory BM 17. The BM 17 controls the pattern data of the character, numeral and symbol so as to come to be the designated character size and the attribute for respective rows and develops them to a BM. When the development is completed by the BM 17, the data of the BM 17 are outputted to a printer 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a formula input method in a word processor or the like using a personal computer.

[Prior art]

The use of personal computers as word processors has become commonplace, and editors that can handle not only text but also graphics and images have been released.

Conventionally, notations such as nroff and scribe have been used as formula input methods in such editors, but both of these notations include letters, numbers, and symbols, as well as size and attributes (superscript, subscript 1 usually). Since the control code for specifying is mixed in the mathematical formula, the entered mathematical formula is not clear even when displayed on a display device, and the result cannot be seen unless it is printed out using a printer or the like. For example, y=c, x”+c, x is nroff; y = c\d1\ux\u2\d+
c\d2\uxScride; y = c■-[1
] x ■ 小 (2) + c ■ - [2] Since this is input as x and displayed on the display device, the result is easy to understand.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention is to provide a mathematical expression input method that is easy to operate and visually understandable in a word processor using a personal computer.

〔composition〕

In order to achieve the above object, the present invention specifies character size and attributes (superscript, subscript, normal) for each line on a display device, and groups characters whose size matches the baseline of one character into one line. Enter. Then, a specific area (for example, the right end) of the display surface of the display device is used as a system display frame, and the character size and attributes of each line are displayed on the second to second lines, and the control code is handled separately. As a result, a mathematical formula that is close to the mathematical formula to be output is displayed on the display device, and the user can input the mathematical formula while easily imagining the output result.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a display on a display device when the mathematical expression input method of the present invention is applied.

In FIG. 1, 100 is a display surface, and a specific area thereof (the right end in this example) is a system display frame 101. The system display frame 101 is used to specify character size and attributes (superscript, subscript, normal) on a line-by-line basis. The left side of the system display frame 101 indicates the character size, "1" is full size, and rHJ is half size. Also, the right side of the system display frame 101 shows attributes, "U" is superscript, rD
J is a subscript, and "-" is normal.

Figure 1 shows the display screen when inputting y=c, In the system display frame 101 of the display surface 100, the character size and attributes specified for each line are displayed.As is clear from FIG. The number of shapes close to zo will be displayed.

FIG. 2 shows a hardware block diagram of an embodiment of the system according to the present invention.

As shown in FIG. 2, an initial setting program for the CPU 2 is stored in the boot ROM 1, and the system is started up by executing this program. The CPU 2 is a processing device that controls the entire system. Programs and data are stored in the RAM3. VRAM4 is video RAM and TRAM for display device (CRT)8
5 is a text RAM for CRT, CG6 is a character generation R○M, C that patterns the character code of TRAM5.
TRC7 is a display control unit that controls the display of CRT8. 9 to 14 are interface circuits, each having a keyboard (KB) 15. Image input scanner (SC) 16
, bitmap memory (BM) 17, hard disk (
A HDD) 19, a floppy disk (FDD) 20, and an optical disk (ODD) 21 are connected. The bitmap memory (BM) is a memory unit that stores data to be output to the printer (LP) 18 as a print image.
Editing and image processing are possible on 7. Optical disc (OD)
D) Reference numeral 21 is a large external file, which is normally used for storing and retrieving editing results, and has no direct relation to the present invention. 22 is a path line connecting each part of the system.

First, an overview of general editing processing by this system will be explained.

Character data input from the KB 15 is sent to the TRAM 5, converted into a character pattern using the CG 6 under the control of the CRTC 7, and displayed on the CRT 8.

In addition, the image data read by 5C16 is stored in VRAM4.
and similarly displayed on the CRT 8 under the control of the CRTC 7. The CRT8 has T by the control of the CRTC7.
It is also possible to display the RAM5 and VRAM4 (7) data alone or at the same time by logically adding them together. In addition, at the end of each line in TRAMS,
A line control command (LCC) indicating the printing size of the character data of that line, line feed amount, etc. is stored, but the character size and line spacing are constant on the CRTa.

Every time editing is completed, the data in TRAM5 is transferred to CG6.
is patterned and sent to BML7.

At this time, the LCC in TRAMS is also converted into an 8M instruction and sent to the 8M17. BMI 7 interprets the LCC, controls the size and position of each character, and develops the sent character pattern data. Image data of VRAM4 may also be sent to 8M17. In addition, in BMI7, "logical sum" or ""
Logical operations such as ``exclusive OR'' and ``ANDP'' may be performed. When editing is completed, the data of 8M17 is output to the printer 18 according to a command from the CPU 2, and the data of 8M17 is output to the HDD 19 as necessary. and registered in FDD20.

Next, a mathematical expression input process according to the present invention will be explained.

Characters, numbers, and symbol data input by operating the KB 15 are stored in the TRAM 5, patterned using the CG 6 under the control of the CRTC 7, and displayed on the CRT 8. At this time, by specifying the size and attribute (superscript, subscript, normal) control code using KB15 for each line of characters, numbers, and symbol strings displayed on the CRT8,
The control code is stored at the end of each line in the TRAMS and displayed in the system display frame at the right end of the CRT 8.

FIG. 1 shows the display screen at this time.

When editing is complete, data (characters, numbers, symbol data, size, attributes) is read from TRAM5, the characters, numbers, symbol data are patterned in CR6, and the size and attribute control codes remain unchanged\interface. 11
Sent to 8M17 via. The 8M17 controls the received pattern data of letters, numbers, and symbols so that each line has the specified character size and attributes, and develops it into a bitmap. Letters, numbers in 8M17,
When the development of the symbol pattern is completed, the data of the BM 17 is output to the printer 18. At this time, if the display screen of the CRT 8 is the example shown in FIG. 1, y"c, x"+c, x are printed out.

The above series of operations is performed by the CPU 2 based on the program written in the program storage area of the RAM 3.
controlled by

〔effect〕

As is clear from the above description, according to the present invention, in a word processor using a personal computer, a mathematical formula that is similar to a commonly used mathematical formula is displayed on the display device, so that the output format can be easily imagined. You can enter formulas while

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a display according to the present invention, and FIG. 2 is a block diagram of an embodiment of a system according to the present invention. 100...display surface. 101...System display frame (specific area). Figure 1 II''In Figure 2

Claims (1)

[Claims] (1) In an editor equipped with a display device, a system display frame for specifying character size and attributes (superscript, subscript, etc.) on a line-by-line basis is provided in a specific area on the display surface of the display device, and characters (numbers, Enter characters whose size matches the baseline (including symbols, etc.) in one line, and enter them in the system display frame on the display surface of the display device.
A formula input method characterized by displaying the font size and attributes of each line.