JPH0424745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character processing device that can input character data and add or delete an underline.

In the past, there were cases where you wanted to add an underline to the input string.

The present invention adds an underline to an input character string or deletes an underline added to a character string by adding an underline to a character specified by a cursor, and furthermore, the storage device By storing underlines in pairs with character strings, you can easily add underlines, move character strings by editing them, or read the document from the storage device. An object of the present invention is to provide a character processing device capable of displaying a document with lines.

An embodiment according to the present invention will be described below.

FIG. 1 is a block diagram of a character processing device to which an embodiment of the input device according to the present invention is applied. In the figure, the CPU is a microprocessor that performs calculations and
AB is an address bus that performs logical judgments, etc., and transfers signals indicating the control target. DB is a data bus that transfers various data and is a bidirectional bus. CB is a control bus that applies control signals to various control targets.

The KB is a keyboard, and includes a key KB1 for inputting characters, functions, and modes, an underline key KB2, a cursor key KB3, and the like.
KBC is a keyboard controller,
It encodes the data input from KB and sends an interrupt signal to control bus CB.
DPC is a CRT controller that controls the CRT device DP, character generator CG, refresh memory M, and refresh memory controller MC3. The CRT device DP is capable of displaying characters, symbols, strokes, etc. Character generator CG
outputs a desired character symbol pattern by inputting codes such as the character code symbol code and the line address of the character symbol pattern. The character and symbol patterns are formed in a matrix, and by changing the row addresses, the character and symbol patterns are output. The refresh memory R stores the character symbol code displayed on the CRT device DP, and repeatedly outputs the character symbol code under the control of the CRT controller DPC. The refresh memory controller MC3 controls the refresh cycle of the refresh memory R and the writing and reading of data from the microprocessor CPU in accordance with instructions from the CRT controller DPC. The ROM is a control memory that stores control procedures and the like shown in FIG. The treatment procedure stored in the control memory ROM is read out by the ROM controller MC1. RAM is a random access memory used for temporary storage of various data. Memory RAM is RAM controller MC
2, writing and reading are performed. MD is a magnetic disk device that stores kanji information in the format described below. The magnetic disk device MD is controlled by a magnetic disk controller MDD.

P is a printer that stores information such as kanji information, katakana, hiragana, etc., and is controlled by a printer controller PD.

The operation of the embodiment constructed as described above will now be described in detail.

This character processing device is written by operating the keyboard KB. When the keyboard KB is operated, an interrupt signal generated by the keyboard KB is transmitted to the microprocessor CPU, which calls the control procedure in the control memory ROM via the microprocessor CPU.
Each control is performed according to the control procedure.

Figure 2 is for explaining the operation of this embodiment, and shows a keyboard in a certain area in the memory RAM.
Data input from the KB is written by the microprocessor CPU according to control procedures in the control memory ROM, and various processes are performed by so-called word processor processing.

The input data is stored in the memory RAM in the form shown in FIG. In other words, 20 indicates the structure of one character data, and 2
1 is the most significant bit MSB, and 22 is the least significant bit LSB. In the figure, each bit LSB, B1 to B14, bit LSB, B
1 to B14 are portions in which character codes are stored, and bit MSB indicated by 21 is a bit that stores a signal indicating whether or not the character is underlined.

The above data is generated by transferring the data part currently being input to the refresh memory M of the CRT device DP during various operations.
Displayed on CRT device DP.

If you want to add an underline to the current cursor position on the CRT device DP, press the keyboard
This is done by pressing the key "underline" KB3 on the KB. "Underline" key KB
When 3 is pressed, the microprocessor is activated by the control procedure in the control memory ROM shown in the flowchart in Figure 3.
It is executed by the CPU. That is, when the "underline" key KB3 is pressed, step 23
The address of the data area on the memory RAM corresponding to the current cursor position on the CRT device DP is calculated, and in step 24 it is checked whether the bit MSB of the data at the address calculated above is 1.
If you want to add an underline, enter 1. If not, enter 0. If the result is not 1 (in this case, it is not 1 because it is added to a place where there is no underline), go to step 25.
Then, set the MSB bit of the address to 1 and exit from this routine. After this, naturally, the data changed as described above is displayed on the CRT device DP as described above.

On the other hand, if you want to delete the underline from data that already has an underline added, set the cursor to the data position in the same way as above,
This is done by pressing the "underline" key KB3.

In other words, in Figure 3, the "underline" key
When KB is pressed, in step 23 the address of the data in the memory RAM corresponding to the cursor position is calculated, and in step 24 it is checked whether the bit MSB of the data at the address is 1 (in this case it is 1). If so, the MSB bit of the data is set to 0 in step 26. Same as above, after this, of course, the data changed as above is transferred to CRT device DP as mentioned above.
display on the screen.

According to the present invention, since the underline information is added to the characters of a character string and stored, the underline can be displayed together with the characters even when editing the character string or reading the character string from the storage device. I can do it.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a diagram showing the data structure in the memory RAM shown in FIG. 1. FIG. 3 is a diagram showing the control procedure. MSB...Most significant bit, KB3...Underline key.

Claims (1)

[Scope of Claims] 1. An input means for inputting character data, a storage means having a plurality of storage locations for storing character data and underline information corresponding to the character data in pairs, and characters stored in the storage means. When displaying data, a display control means controls whether or not to display an underline on the character data according to the presence or absence of underline information corresponding to the character data, and displays the data on the display means; cursor control means for controlling a cursor that indicates one of the displayed character data; an instruction means for instructing adding or deleting an underline to the character data; and calculating the storage position of the storage means to add underline information in pairs to the character data indicated by the cursor and storing the underline information, or instructing operation to delete the underline. control means for calculating the storage position of the storage means and deleting the underline information in response to the character data indicated by the cursor in order to delete the underline information added in pairs to the character data indicated by the cursor. Character processing device.