JPH0469914B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a character display device that is capable of displaying a mixture of characters of a plurality of sizes. This relates to control when performing editing processing on a character string containing characters of mixed sizes.

[Conventional technology]

FIG. 4 is a block diagram showing an example of a character display device, in which 1 is an interface section, 2 is a refresh memory, 3 is a control section, 4 is a character generator, 5 is a display section, and 6 is a keyboard. It represents.

In FIG. 4, data (such as character codes) received from the computer by the interface section 1 is stored in a refresh memory 2, and read out by the control section 3 in synchronization with raster scanning. Then, the character code among them is sent to the character generator 4. Character generator 4
converts the transferred character code into a dot pattern and sends it to the display section 5.

The display position on the screen of the display unit 5 is fixed in terms of hardware in units of sub-blocks, which will be described later, and has a one-to-one correspondence with the addresses of the refresh memory 2. In other words, refresh memory 2
The contents of a specific address are displayed at a corresponding fixed position on the screen.

When displaying characters of a plurality of sizes, it is common to use the smallest character block size (dot configuration) as a unit and rely on combinations of integral multiples thereof.

FIG. 5 is a diagram showing an example of the relationship between screen data and the display screen, where 7 is a small-sized character, 8 is a medium-sized character, 9 is a standard character, 10 is a double-width character, 11 is a double-width character, and 12 is a double-width character. Showing double-height characters. The minimum unit of displayed characters (minimum character section) is called a sub-block and consists of 12 dots vertically and 8 dots horizontally.
For standard characters and medium-sized characters, the character generator decomposes the corresponding character pattern into subblocks (quadrants) and generates each pattern based on the quadrant information.

Figure 6 is a diagram showing the relationship between character patterns and character generator data, where 13 is a standard character, 14 is a medium character, 15 is a small character, and 16 is a small character.
CG memory (ROM), 17 represents pattern data of standard characters, and 18 represents pattern data of medium and small characters. Moreover, ~ in the figure represents a quadrant.

[Problem that the invention seeks to solve]

In the character display device as described above, when specifying a certain character string and performing a simultaneous correction process to replace all character strings on the screen that have the same character sequence with other character strings, Conventionally, after executing the simultaneous correction process, there have been cases where the user realizes that character strings that do not need to be corrected have also been corrected. In particular, systems that recognize character strings by suppressing null characters between characters have the disadvantage that such problems are likely to occur. On a screen where characters of a plurality of sizes are displayed in a mixed manner, it is difficult to confirm such problems after simultaneous correction, and restoration is troublesome.

In view of the above-mentioned drawbacks of the conventional art, the present invention provides a character with good operability that does not cause characters or character strings not intended by the operator to be replaced with other characters when performing simultaneous correction processing. The purpose is to provide display devices.

[Means for solving problems]

According to the present invention, this object is achieved by providing a character display device capable of displaying a mixture of a plurality of types of characters as described in the claims. , or by providing a means for displaying an editing cursor over the character or character string, and instructing simultaneous correction of any character or character string, the corresponding character among the characters displayed on the screen. Alternatively, this can be achieved by a simultaneous correction processing control method characterized by displaying the editing cursor so as to point to a character string.

[Effect]

In the above character display device, when an operator wishes to simultaneously correct a specific character or character string (hereinafter also simply referred to as a character string) among the characters displayed on the screen, the operator selects the character string to be corrected. When specifying and instructing simultaneous correction, the editing cursor points to the corresponding character or character string on the screen, making it easy to check whether the correction has been made as intended. At this time, if there is a character or character string indicated by the editing cursor that you want to leave as it is without correction, the correction of that character or character string is suppressed (for example, if the character or character string indicated by the editing cursor is (by erasing the cursor).

〔Example〕

FIG. 1 is a flowchart showing the control of one embodiment of the present invention. In Figure 1, to search for a character string to be corrected, save the lowest sub-line (a sub-block line is a sub-block line) of the character string to be corrected to a save buffer, and display the same sub-block column on the screen. This is done by searching among the characters that are listed.
Since all of the character strings to be corrected have the same character height, they can be considered to be the same character string if all the subblock strings in the lowest sub-row are the same. The save data pointer is used to search for subblocks on the save data, and the screen pointer 2 is used to search for subblocks on the image buffer (screen).

To find the leftmost sub-block at the bottom of one character, one bit (not used by the hardware) of the character's 5-byte information, which will be described later, is used. That is, if it is the bottommost leftmost subblock of one character, the above bit is set to "1" and the screen pointer 1 is updated until it is found.

FIG. 2 is a diagram showing an example of an editing cursor, and 19 represents the editing cursor. Second
In illustrations, if there is a wide space between characters, there is a
Indicates that there is a null character. In this example, the editing cursor is displayed for the same character sequence regardless of the presence or absence of a null character between characters.

FIG. 3 is a diagram showing an example of 5-byte information on the memory, and this is memory information for displaying one sub-block worth of patterns on the display. In FIG. 3, 20 is a bit that indicates the lowest leftmost position, 21 is a size designation bit, 22 is a character code, 23 is a quadrant designation bit, 24 is a cursor designation bit, 25 is an edit cursor display bit, 26 represents a double width designation bit, and 27 represents a double height designation bit.

〔Effect of the invention〕

As explained in detail above, according to the method of the present invention, in a character display device that can display characters of a plurality of different sizes, specific characters among the characters displayed on the screen can be When attempting to correct character strings all at once, the corresponding character string on the screen is indicated by the editing cursor before the correction is executed, so the operator must check whether the correction target is as intended. I can do it. Therefore, it is possible to realize a character display device with good operability, which does not cause inconveniences such as corrections made contrary to the operator's intention, and is highly effective.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing control of one embodiment of the present invention, FIG. 2 is a diagram showing an example of an editing cursor, and FIG.
The figure shows 5-byte information on memory, Figure 4 is a block diagram showing an example of a character display device, Figure 5 is a diagram showing an example of the relationship between screen data and display screen, and Figure 6 is a diagram showing an example of the relationship between screen data and display screen. FIG. 3 is a diagram showing the relationship between character patterns and character generator data. DESCRIPTION OF SYMBOLS 1...Interface part, 2...Refresh memory, 3...Control part, 4...Character generator,
5...Display section, 6...Keyboard, 7, 15...Small characters, 8, 14...Medium characters, 9, 13...Standard characters,
10...Double-width characters, 11...Double-width characters, 12...Double-height characters, 16...CG memory (ROM), 17...Standard character pattern data, 18...Medium and small character pattern data, 19...Editing cursor, 20...Bit indicating that it is the lowest and leftmost position, 21...
Size specification bit, 22... Character code, 23... Quadrant specification bit, 24... Cursor specification bit, 25
...Edit cursor display bit, 26...Double width specification bit, 27...Double height specification bit.

Claims (1)

[Claims] 1. In a display device capable of displaying a mixture of multiple types of characters, a means for displaying an editing cursor near or over the characters or character strings on the display screen shall be provided. , a simultaneous correction processing control characterized in that when a simultaneous correction of arbitrary characters or character strings is instructed, the editing cursor is displayed to point to the corresponding character or character string among the characters displayed on the screen. method.