JPH0122621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a document creation device that creates a document and displays it on a display device.

[Background of the invention]

2. Description of the Related Art Conventionally, a document creation device or the like creates a document based on character information input through a keyboard, and displays the document on a display device. In such document creation devices, there are conventional cursor control methods as described below.

That is, the first method uses cursor keys in which when a cursor key on which arrows in the up, down, left, and right directions are engraved is pressed, the cursor moves one character at a time in the specified direction. The second method is to have a row displaying tab position 1 as shown in FIG. In this method, the position where the cursor should stop is specified by some means, and the tab mark 2 is placed there.
Display. When the cursor is at position 3 (below the letter D), pressing the tab key provided on the keyboard moves the cursor to position 4, the nearest tab mark. If you press the tab key again, the cursor will similarly move to tab mark position 5.
Further, as a third method, there is a method in which the cursor is moved at once to the next position after the final input position using an input position key or the like. In this method, as shown in FIG. 2, for example, when the cursor is at position 6, pressing the input position key moves the cursor to position 8 next to the last input position 7. In this case, mark 9 in FIG. 2 indicates the end of the sentence.

However, the conventional cursor control method as described above has the following drawbacks. In the first method, the cursor is moved one character at a time, so when moving the cursor to the final position (unentered position) of the inputted character that is actually most necessary, cursor operation becomes cumbersome if there are a large number of characters. Become. With the second method, the cursor moves only to the position specified by the tab mark, regardless of whether it has not been entered or not, so when you want to move the cursor to a position that has not been entered and enter characters following the already entered text. is inconvenient. Furthermore, in the third method, the cursor always moves to the end of the document, so even if there is an uninputted part in the middle of the document, the cursor does not stop there, which is inconvenient.

[Purpose of the Invention] This invention was made in view of the above circumstances, and its purpose is to move the cursor to a position where no input has been made at once with a simple key operation, such as when continuing to input characters into a document that has already been input. An object of the present invention is to provide a document creation device that can be reliably moved up to.

[Key points of the invention]

This invention examines document data in a forward or backward direction from a current cursor position by operating a specific key, and detects the beginning of the next uninput position following the document data. Based on this finding,
Move the cursor to the next character position in the document data.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a block diagram showing the configuration of a document creation device according to the present invention. In the figure, 10 is a keyboard with character keys, function keys,
It is equipped with cursor movement keys, non-input position keys, etc. The CPU 11 determines key input signals from the keyboard 10, and controls the operation of the editing control circuit 12 in the case of input signals from character keys, function keys, etc. The editing control circuit 12 is
The document memory 13 is operated to edit document data. This editing result is the display control circuit (CRTC) 1
Display device (hereinafter referred to as CRT) by controlling 4.
15 is displayed. On the other hand, in the case of a cursor movement key or a non-input position key, the CPU 11 controls the operation of the cursor control circuit 16 to move the cursor.

The cursor control circuit 16 includes an instruction decoder 17, which decodes instructions output from the CPU 11 and the editing control circuit 12. The cursor movement circuit 18 includes an instruction decoder 17
Normal cursor movement (up,
(down, left, right movement). The cursor movement circuit 18 has a pointer that stores a cursor address. The uninput space search circuit 19 searches for an uninput space (that is, the next uninput position after the end of a series of document data) based on the document data read from the document memory 13 under the control of the editing control circuit 12. . Cursor address register (cursor address register 1) 2
0a is a cursor address (that is, an address on the document memory 13) obtained by the operation of the cursor movement circuit 18 and the uninput space search circuit 19.
Store A ₁ . This cursor address A ₁ is converted into a cursor address A ₂ on the CRT 15 by the address conversion circuit 21 and stored in the cursor address register (cursor address register 2) 20b. The cursor address register 20b is
The cursor address _A2 is output to the display control circuit 14. 22 is an address/data bus.

The operation of this configuration will be explained. First, the case of normal cursor movement will be briefly explained. When the cursor movement key of the keyboard 10 is operated, the CPU 11 outputs the instruction decoder 1.
Set the command to 7. In addition, keyboard 10
When the character keys, function keys, etc. are operated, the CPU 11 activates the editing control circuit 12. The editing control circuit 12 operates the document memory 13 to control the editing operation of document data. As a result, a new cursor position is determined. Edit control circuit 12 sets cursor address _A1 corresponding to the cursor position in cursor address register 20a. Furthermore, it instructs the instruction decoder 17 to perform address conversion. As a result, the instruction decoder 17 converts the address conversion circuit 21
, converts the cursor address _A1 to a cursor address (address on the CRT) _A2 , and sets it in the cursor address register 20b.
The display control circuit 14, based on the cursor address _A2 from the cursor address register 20b,
This will move the cursor on the CRT15.

On the other hand, when a non-input position key on the keyboard 10 is operated, the CPU 11 sets an instruction in the instruction decoder 17 and controls the operation of the non-input space search circuit 19. This non-input space search circuit 19 operates as shown in FIG. That is, first, the cursor address register 20a
Cursor address A ₁ of cursor movement circuit 18
pointer (step S1). The search circuit 19 reads the contents of the pointer and determines whether the address is at the end of the document data (step S2). In this case, the search circuit 19
is stored in the document memory 1 under the control of the editing control circuit 12.
Based on the document data read from 3, for example, there is a character at the address specified by the pointer, and there is no character at the address next to the address specified by this pointer, etc. I judge that there is. This judgment result
If YES, the pointer is incremented by one character (step S3), and the contents of this pointer are stored in the cursor address register 20a (step S4). This cursor address register 20a
The cursor will move to the position corresponding to address _A1 stored in . Further, if the above judgment result (step S2) is NO, it is judged whether the content of the pointer is an uninputted space (step S5). If the result of this judgment is YES, the pointer is incremented by one character and step S2
The process returns to step S6. If the above judgment result (step S5) is NO, the pointer is incremented by one character (step S7), and it is judged whether the content of this pointer is at the end of the document data (step S8). This judgment result
If YES, the process of step S3 above is performed. If NO, it is determined whether the content of the pointer is an uninput space (step
S9). If the result of this judgment is YES, the process of step S4 is performed, and if the result is NO, the process returns to step S7.

In such an operation, the movement of the cursor will be specifically explained. As shown in FIG. 5, if the cursor is currently located at position 51, when the non-input position key is operated, the cursor moves to the non-input space at position 52. Similarly, when the uninput position key is operated based on the flowchart of Fig. 4, the cursor moves from position 52 to position 53, from position 53 to position 54, and from position 54 to position 55. It will move depending on the number of operations (3 times). Here, the end of the document (document data) shown in Figure 4 is, for example, the letter "E" in (ABCDE...) as shown in Figure 5, or "Γ" in (ABCDE.).
is the last one. Furthermore, a frame 6 as shown in FIG.
Since 0 is also a character, if the cursor is at position 55, it moves to position 56 when the non-input position key is operated.

By the way, in the operation of the uninputted space search circuit 19 as described above, although the flowchart of FIG. 4 shows the case of forward uninputted space search, operation of backward uninputted space search is also possible. . Such an operation is shown in the flowchart of FIG. 6, but since it is basically the same as that shown in FIG. 4 above, the explanation will be omitted. Specifically, the movement of the cursor by searching for uninputted spaces in the backward direction is as shown in FIG. That is, if the cursor is at position 70,
When an uninput position key is operated, the cursor changes to the position
Move to 71. In this case, the end of the document shown in FIG. 6 is the frame 72. Then, when the uninput position key is operated further, the cursor moves from position 71 to position 73, from position 73 to position 74, and from position 74 to position 75.
It will move depending on the number of times the key is pressed (3 times).

In this way, the keyboard 10 in this invention
By operating the non-input position key, the non-input space search circuit 19 searches for the end of the document data edited under the control of the edit control circuit 12. Then, the cursor address corresponding to the next last character position searched is set in the cursor address register 20a. Therefore, the cursor will move from the current position to the set address, and as a result, it will move all at once to the position of the uninputted space.

〔Effect of the invention〕

According to this invention, it is possible to reliably move a cursor sequentially to a non-input position following the end of a character or a character string (characters here include so-called characters, symbols, ruled lines, etc.). For example, when entering data into a table that has already been entered, the input speed can be improved.

[Brief explanation of drawings]

1 and 2 are diagrams showing the movement state of a cursor to explain the operation of the conventional cursor control method, and FIG. 3 is a block diagram showing the configuration of a document creation device according to an embodiment of the present invention. 4 and 6 are flowcharts for explaining the circuit operation of FIG. 3, and FIGS. 5 and 7 are diagrams showing the state of movement of the cursor in the circuit operation of FIG. 3. 10...Keyboard, 11...CPU, 12...
...Editing control circuit, 13...Document memory, 14...
Display control circuit, 15... Display device, 17... Command decoder, 18... Cursor movement circuit, 19...
Uninput space search circuit, 20a, 20b...
Cursor address register, 21...address conversion circuit.

Claims (1)

[Claims] 1. In a document creation device that creates document data based on input character information and displays this document data on a display section, when a predetermined key is operated,
A detection means for detecting the end of a character or character string in the forward or backward direction based on the current cursor position, and a detection means for detecting the end of a character or character string detected by the detection means, and a cursor located at an uninput position following the end of the character or character string detected by the detection means. 1. A document creation device comprising a cursor moving means for moving.