JPS62229317A - Character processor - Google Patents

Abstract

PURPOSE:To attain the right-left shift of a tab via a single tab key as well as the up-down shift of the tab via the shift of a cursor, by using a tab shift direction designating means and a tab shift means in a documents compiling mode. CONSTITUTION:When a tab key is applied through a keyboard, a cursor is first erased. Then it is decided whether the contents stored in a tab shift direction register TBR indicate the upper, lower, right or left direction. for instance, TBR=2 is secured with the lower shift of a tab. Then it is decided whether the contents of a cursor line address YCR are smaller or not than the maximum line number MAXY by >=4. If so, 4 is added to the contents of the register YCR. If not, the number MAXY is substituted for the address YCR. Thus the cursor can moved down and therefore the tab is also moved down.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a character processing device for inputting and editing data such as characters and symbols, and in particular to a character processing device that allows the tab movement direction to be specified in a desired direction among up, down, left, and right. It relates to a processing device.

[Conventional technology]

Conventionally, in this type of character processing device, tab movement is only possible to the right. For example, if an attempt was made to move a tab to the left, it was necessary to provide a separate reverse tab key or the like. Further, in general, vertical tab movement has not been considered in conventional character processing devices.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a character processing device that eliminates the above-mentioned drawbacks, performs the functions of the conventional tab key and reverse tab key with a single key, and also allows tab movement in the vertical direction. be.

[Means for solving problems]

In order to achieve such an object, the present invention includes an input means for inputting data such as characters and symbols, a display means for displaying the input data and a cursor, and a key means for performing tab movement. The character processing device is characterized by comprising means for specifying the direction of tab movement, and means for moving the tab in the specified direction in response to input from the key means.

(Function) According to the present invention, it is possible to move the tab in the left and right direction with one tab key, and also to move the tab in the up and down direction by quickly moving the cursor in the up and down direction.

(Example) Examples of the present invention will be described below in detail and specifically based on the drawings.

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

In FIG. 1, reference numeral 1 denotes a key input means, which has a tab movement direction instruction key TBK and a tab movement execution key TB.

Reference numeral 2 denotes a tab control means that stores the tab movement direction designated by the tab movement direction instruction key T[l, and performs control to move the tab in the relevant movement direction.

Reference numeral 3 is a character input from the key input means 1.

This is display control means that controls the display of symbols, cursors, etc. on the display 4.

As shown in FIG. 1, the key input means 1 is used to instruct the tab movement direction, and the tab control means 2 stores the result. Thereafter, when the tab key TB is input, the tab control means 2 and display control means 3 output tab movement to the display 4.

FIG. 2 shows another embodiment of the character processing device of the present invention.

In the illustrated configuration, the CPU is a microprocessor that performs calculations and logical judgments for character processing, and connects the address bus B, control bus CB, and data bus DB.
control each component connected to those buses.

The address bus A[l transfers address signals indicating the components to be controlled by the microprocessor CPU. Control bus CB is microprocessor C
Transfers control signals for each component to be controlled by the PU. The data bus DB transfers data between each component.

+10M is a read-only memory that stores control procedures by the microprocessor CPU, such as the control procedures shown in FIGS. 4 and 5.

Further, the RAM is a random access memory and is used to temporarily store various data from each component.

B is a keyboard equipped with keys for inputting characters and symbols, etc., and keys for instructing various functions to the character processing device, and a tab movement direction instruction key TB and a tab movement execution key TB are also provided on this keyboard B. It is located.

T[lR is a tab movement direction register that stores the tab movement direction specified by the tab movement direction instruction key TBK.

MAXY is a document maximum line number register, and stores the number of lines on one page.

DISK is a memory for storing standard documents and manages created documents, and saved documents are called up by instructions from B on the keyboard.

Cn is a cursor register. The contents of the cursor register CR can be read and written under control from the microprocessor CPU. xCR is a cursor column register and stores the column coordinates of the cursor. YCn is a cursor row register and stores the row coordinates of the cursor.

BUF is a buffer memory that stores character information etc. input from B on the keyboard.

CIIT is a display device using a cathode tube, a liquid crystal display, or the like.

CIITC is a CRT controller, and displays the contents stored in the cursor register CR and buffer memory BUF on the display CRT.

CG is a character generator and display device C
It generates character signals such as characters, symbols, and cursors to be displayed on the RT.

FIG. 3 is a diagram showing an example of the arrangement of the keyboard KO. In this embodiment, in addition to the alphabet keys AN, the keyboard B includes a tab movement direction instruction key TBK for instructing the direction of tab movement, a tab movement execution key TB, and the like.

Next, an example of the control procedure in this embodiment is shown in the flowcharts of FIGS. 4 and 5.

FIG. 4 shows an example of a processing procedure for instructing the direction of tab movement.

In step St, if the input key is the tab movement direction instruction key TB, the process proceeds to step S2, and the tab movement direction register TBH is set to 1 if the right direction is specified, and 1 if the downward direction is specified. 2 is stored if the left direction is specified, 3 is stored if the upward direction is specified, and 4 is stored if the upward direction is specified.

In step S51, if the input key is not the TBK key, the process advances to step S3 and normal processing is performed.

FIG. 5 shows an example of processing when the tab movement execution key TB is pressed.

When the tab key TB is input by B on the keyboard, step Sit is executed. In step S11, the cursor currently displayed on the display CRT is erased. The method of displaying and erasing the cursor can be realized by a known method, so the explanation thereof will be omitted here.

Next, the process advances to step 512, where the contents stored in the tab movement direction register TBR are 1.2. :1.4
Determine which of the following. Tab movement direction register T
[If lR is 1.1- that is, the movement is to the right, step 5
If it is 3, that is, a movement in the left direction, the process proceeds to step 514, if it is 2, that is, a movement in the downward direction, the process proceeds to step 516, and if it is 4, that is, a movement in the upward direction, the process proceeds to step 515.

Step 513 is a process for executing tab movement to the right, which is a normal tab movement process. Further, step S14 is a process for executing tab movement to the left, and is similar to normal reverse tab processing. Therefore, since the contents of these processes are well known, their explanation will be omitted here.

In step 516, the cursor row address YCI
It is determined whether the content of I is smaller than the maximum number of lines MAXY by 4 or more, and if it is smaller, the process proceeds to step 517;
If it is larger, the process advances to step 518.

In step 517, 4 is added to the contents of the cursor row register VC11.

In step S18, the maximum number of lines MAXY is assigned to the cursor line register YCH.

From step 51B to step S18, cursor movement in the downward direction is realized. That is, if the cursor is located four or more lines above the maximum number of lines M8XY, the cursor is moved down four lines; otherwise, the cursor is moved to the bottom line. This process is not actually tab movement, but it can omit vertical settings and easily implement vertical functions.

Step 515 is a process of moving upward.

This processing can be realized in the same manner as the processing from steps 51B to 518 for moving downward.

Then, steps 513, 514, 517, 518, 5
15 to step S19, where the display CR
Display the cursor on T.

Note that in the embodiment described above, the direction of tab movement is specified by TB.
This is done by providing a special K key, but instead of doing so, the key function may be given to the TB by double-functioning an existing key, or it may be instructed by a command or other method.

Further, although the tab movement in the vertical direction is fixed every four lines on the upper side, it may be possible to set tabs in the vertical direction instead of doing this.

Furthermore, on the upper side, in the downward tab movement direction,
Although we set the cursor to stop at the end of the line, it is also possible to perform other movement operations.

(Effects of the Invention) As is clear from the above, according to the present invention, it is possible to move tabs in the left and right directions with one tab key, and furthermore, it is possible to move tabs in the up and down direction by quickly moving the cursor in the up and down directions. can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of another embodiment of the present invention, and FIG. 3 is a layout diagram of the keyboard configuration of the embodiment of the present invention. FIGS. 4 and 5 are flowcharts showing an example of a control procedure according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Key input means, 2...Cursor control means, 3...Display control means, 4...Display device, CPU...Microprocessor, Δto...Address bus, CB...Control Bus, DB...Data bus, flOM...Read-only memory, 118M...Random access memory, KB
...Keyboard, MAXX...Document maximum digit number register, DISK...
Memory for storing standard documents, C...Cursor register, XL:n...Cursor column register, YC...Cursor row register, BUF...Buffer memory, CRT...Display device, CnTC- --CRT: 2 controller, CG...
Character generator, TO... tab movement direction instruction key, TO... tab movement execution key. Unexploded θ color 19 colors 1. ．． Figure 1 Figure 1 Book Zushi B Monthly Hiita 11 20-Kate Figure 4

Claims (1)

[Scope of Claims] A character processing device comprising input means for inputting data such as characters and symbols, display means for displaying the input data and a cursor, and key means for performing tab movement, comprising: A character processing device comprising: means for specifying a direction of movement; and means for tabbing in the specified direction in response to input from the key means.