JPH0472263B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a display control unit in a document creation and editing device.

[Technical background of the invention and its problems]

In conventional devices based on screen editing such as word processors, the number of lines/screen and number of characters/line of the display device to be connected is determined, and devices with different number of lines/screen and number of characters/line are capable of handling different numbers of lines/screen and number of characters/line. In order to connect to a display device, it was necessary to change a part of the display control method, that is, the internal control program. Of course, it was possible to control the display on different display devices by allowing the values of number of lines/screen and number of characters/line to be set externally as parameters without directly changing the program. By the way, display devices generally display multiple lines,
In recent years, with the aim of downsizing the device, editing devices having display devices with only two lines or one line have appeared. However, when the display device has only one line, the display control method may be different from that for other cases where the display device has a plurality of lines. In other words, in order to make the device more compact and cost-effective, the control program has also been made simpler; for example, the cursor only needs to be moved horizontally (within one line), and since the cursor cannot be moved up or down,
Although we simplified this by eliminating the need to control the timing of moving the cursor up and down on the screen and switching the screen scroll, which was required when displaying multiple lines, it became difficult to input characters consecutively at the end of a line. One-line display devices have several features, such as shifting one line of text to the beginning of the line to display as much of the preceding and succeeding information as possible, instead of automatically starting a line break immediately at the point in time. This is a unique means of control. Therefore, in order to realize a satisfactory interactive editing function by connecting another multi-line display device to an editing device originally created exclusively for a single-line display device, it is necessary to change not only the parameters but also the internal control program. I had no choice.

[Purpose of the invention]

The document creation/editing device provided here uses the same editing control means for display devices with different numbers of display lines, especially single-line display devices and multi-line display devices, by a simple method. A sufficient interactive editing function can be realized by specifying the number of display lines only for the screen as a parameter.

[Summary of the invention]

As mentioned above, in the case of a single-line display, means are used to implement specific interaction processing, but even when a multi-line display device is connected instead, the same interaction processing is performed on a predetermined line of the display device, for example in the center. The present invention provides a document creation/editing device that reads out document character strings from a document memory and displays them before and after the document character strings, respectively.

〔Effect of the invention〕

The compact word processor is easy to carry and has a built-in single-line display, and a large CRT can be used as needed.
By connecting a display device such as the above to the outside, editing and proofreading processing can be realized more efficiently. In this case, the control program in the device may be designed for a simple one-line display device, and sufficient editing functions can be obtained by connecting many types of display devices by simply setting some parameters.

[Embodiments of the invention]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, reference numeral 1 denotes an input section for inputting characters or editing commands, and a keyboard device, tablet device, etc. can be used. 2 is a document memory for storing code information of documents sequentially input from the input section 1; Reference numeral 3 denotes a display control unit that controls display for the display device 4, a display format storage unit 6 that stores how many lines the display device can display, and a display format storage unit 6 that stores information about the currently displayed document in the memory. It also has a display memory 7 that stores some character code strings. The code string in the display memory includes, for example, a control code for displaying a specific character string in reverse video, a control code for displaying a cursor, and the like. 5 outputs the character string input from the input section to a designated portion of the document memory; interprets the commands instructed from the input section and performs the corresponding editing process; and instructs the display control section to specify the display position and inversion; This is an editing control unit that controls the entire document creation and editing device, such as giving instructions regarding the cursor.

FIG. 2 is an example of a one-line display. Twelve sentence examples and thirteen cursors are displayed on eleven single-line display devices.

FIG. 3 is an example of displaying a document on a multi-line display device using the document creation/editing device of the present invention in response to instructions from an editing control section originally intended for a single-line display device. In the display device 14, one-line display content 15, the document content in front of it is displayed in 17, and the document content in the back is displayed in 18, respectively.

The operation of the present invention will be explained below with reference to FIG.

First, when a command to "create a new document" is input from the input section, the editing control section 5 clears the document memory 2 to its initial state and instructs the display control section 3 to display the document. At this time, the cursor position corresponds to the beginning of the document memory, and an instruction is given to take out the first line from the document memory 2 and display and output it. The display control unit 3 transfers the content of one line of the specified document to the display unit 4 and displays it on line C. At this time, the display format is determined in advance to determine how many lines the display device 4 has the display capacity. It is stored in the storage unit 6, and according to the number of lines TL, for example, the center line C of the display device, that is, if the value TL is one line, it is the first line of the display device, and if it is the 21st line, it is the 11th line. This is done by directing the position to the eyes. 12 in figure 2, 1 in figure 3
Corresponds to 5. The specification of the number of lines TL for this display capacity is
The operator can enter the information in advance from the input unit 1, or a special mechanical switch can be provided when connecting the display device 4 to automatically determine the number of lines TL that can be displayed on the currently connected display device. It is also possible to provide a circuit to make the determination.

Next, when the display format storage unit 6 indicates multiple lines, the display control unit 3 retrieves a predetermined number of lines of document content ahead of the currently displayed document line from the document memory 2, and transfers these to the third It is displayed in the area shown in FIG. Further, a predetermined number of lines of the content of the subsequent document are retrieved from the document memory 2 and displayed on the display area 18. In the present example, since the display of 12 or 15 is the first line of the document, it is necessary to control the area 17 so that nothing is displayed.

Next, character codes are input sequentially from input section 1,
It is stored in the document memory 2 as a character code string. The editing control unit 5 counts up the cursor position each time an input character enters, and displays the designated line to be displayed.
The cursor position is specified and a display instruction is given to the display control unit 3, but when the input characters exceed one line, the specified display line position is counted up. In this way, the input document is displayed on the display device 4, for example, as shown in FIG.

When a command for giving an upward instruction to the cursor 16 is inputted from the input section 1, the editing control section 5 selects the line in the document memory 2 corresponding to the line currently displayed at 12 or 15. Specifies the position one line ahead of the line position. Of course, if the first line is currently being displayed, the specified position will not be changed.

This specified value is stored in the display specified line storage section 8, and then the display control section 3 reads the one line document data corresponding to this specified position from the document memory 2 and displays it on the display device 4. At this time, refer to the display format storage section 6, and if it is a single line display device, 12
As in the example above, and if it is a multi-line display device, 15
Display it in the center of the screen as shown in the example below.

Next, the following processing is performed only in the case of multiple display devices.

From the line specification value in the display specification line storage unit 8, subtract the value specified in the display format storage unit 6, for example, 10 lines for a 21-line display device, to obtain the upper display specification value 9, and then set the upper display specification value 9 at that position. For example, 10 lines are read out from the corresponding document memory 2 and displayed on the display device 4 from the first line. Similarly, for example, 10 lines (in the above example) are read out from the document memory 2 corresponding to the line position next to the display specified line 8, and are displayed on the display device 4 from, for example, the 12th line.

In this way, even if the display device 4 is a multi-line display device, for example, the center row can be displayed in the same format as a single-line display device, and the screen portions before and after it can be easily displayed. It is possible to display the contents of the previous and subsequent documents by following these steps.

The command to display the upper and lower areas of the screen is as follows:
Of course, there is no need to send it each time, except when specifying the top and bottom of the cursor, ie, when scrolling the screen, or when inputting a line feed code.

It should be noted that the intention of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

In the explanation of the above embodiment, when the display device is a multi-line display device, processing is performed by dividing the data into the upper and lower areas centering on one row of data in the center. For example, when the number of displayable rows is 21, the You can subtract 10 lines from the value of the instruction line (the line of the document to be displayed in the center) and display 21 lines from the line position of the document. At this time, the display start position is from the first line on the screen, but the cursor is always displayed in the center line.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram of the configuration of the document creation/editing device, and Fig. 2 is a diagram showing an example of display on a single-line display device.
Figure 3 is a diagram showing an example of display on a multi-line display device;
The figure is a flowchart of an example of the operation of the display control section. 1... Input section, 2... Document memory, 3... Display control section, 4... Display device, 5... Edit control section, 6
...Display format storage unit, 7...Display memory, 8...
Display specification line storage section, 9... Upper display specification storage section,
10...Lower display specification storage unit, 11...Single line display device, 12...Single line display area, 13...Cursor display example 1, 14...Multiple line display device, 15...Central display area, 16...Cursor Display example 2, 17...
...Upper display area, 18...Lower display area.

Claims (1)

[Scope of Claims] 1. An input unit for obtaining a character code string corresponding to a document and an editing instruction input, a document memory for storing the input character code string of the document, and a character code string for a certain number of lines. a display device having a display capability of; a display control section for displaying and outputting a predetermined number of lines of character code strings in the document memory to the display device; In a document creation/editing device comprising an editing control section for editing data in memory, the display control section is arranged to display a certain number of lines when a display device having a display capacity exceeding the certain number of lines is connected. Display control is performed in a similar manner for a display range of several minutes, and the corresponding previous document in the document memory is displayed at the top of this range, and the subsequent document is displayed at the bottom. A document creation and editing device characterized by: