JPS60154292A - Display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application of the Invention The present invention relates to a display device having a scroll display function for displaying images.

(Background of the Invention) In display devices, there are hardware restrictions on the amount of information that can be displayed on an image display screen at one time.

For example, in Japanese word processors, JIS standard A
In order to display an image of text written on 4-size paper or B4-size paper, a display device that can display approximately 60 to 80 characters both horizontally and vertically is required. 1 (1) When one character is expressed in a dot matrix configuration of 24 dots horizontally x 24 dots vertically, the image display screen of a commonly used 12-inch or 14-inch CRT display device can display approximately 46 characters horizontally. 'The display limit is about 24 characters in the vertical direction. Therefore, the amount of information described above cannot be displayed at once. If this display device were to display the amount of information, one character would have to be represented by a dot matrix of about 13 dots by 13 dots, which would make the character size too small and reduce the types of characters that can be represented. In addition, the hard copy dot printers attached to Japanese word processors are required to print high quality, and high quality printing requires a matrix configuration of at least 24 dots x 24 dots. If the character representation is made into a 13 dot x 13 dot matrix structure, two types of character pattern generators are required, one for the display device and the other for the printer, which is uneconomical. It is also possible to standardize the representation of one character into a 24 dot x 24 dot configuration (2) and increase the resolution of the display screen of the display device, or increase the size of the display screen, but this would increase the cost of the device. There are drawbacks such as increased size and larger size.

To compensate for this drawback, there is a wrapping display function that displays the amount of information for one horizontal line of the information image in multiple lines on the display screen of the display device, and a function that moves the image displayed on the display screen horizontally or vertically. Some have a scrolling display function. However, in this folded display method, the information arrangement position of the image does not correspond one-to-one on the display screen -F and on the hard copy, so especially for figures and tables -1-
This is inconvenient for tiR inferring the relationship below. For this reason, many display devices employ a scroll display method in which the information arrangement positions of the hard copy and the display screen correspond.

However, a display device having a scrolling display function has the disadvantage that when the displayed image is scrolled, all the information on the display screen must be rewritten, which slows down the surface water velocity per screen and impairs operability (3).

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a display device with a scroll display function that can display content more quickly and eliminate operator frustration due to a decrease in display speed.

(Summary of the Invention) In order to achieve this object, the present invention provides a scroll display, focusing on the fact that the operator wants to "quickly confirm the screen content that newly appears by scrolling." When displaying, a means for switching the rewriting direction when rewriting the screen of the scroll display is provided so that the contents of the display screen are rewritten from the row or column direction that newly appears due to scrolling.

(Example of U Ming) tsu, -F, *□, □wa-8tsu. (One example will be described in detail.)

FIG. 1 is a block diagram showing the basic configuration of a Japanese word processor. Image information code signals such as characters or symbols inputted from an input device w1 such as a keyboard or a tablet (4) are stored in a control unit 3 such as a microcomputer of the display device 2. The control unit 3 sends the stored image information code signal to the character pattern generator 4.
is converted into an image information dot signal and sent to the display section 5, where it is displayed as an information image on the CRT display screen. The output device 6 outputs a text or the like as a result of editing work performed by operating the input device 1 as a hard copy.

FIG. 2 shows the main parts of the internal configuration of the control section 3. An image information code signal generated by operating the input device 1 is controlled by the overall control section 3a and temporarily stored in the system storage section 3b.

On the other hand, the image information code signal to be displayed on the display section 5 is stored in the system storage section 3b by the storage control section 3c, which stores the display start row number a and the display start column number 2, for one screen to be displayed. The image information code signal is read out and temporarily stored in the screen storage section 3d. The image information code signals temporarily stored in the screen storage section 3d are read out by the overall control section 3a in the order shown in Table (5), converted into image information dot signals by the character pattern generator 4, and sent to the display section 5. It will be done. The storage control unit 3c stores the scrolling direction input from the input device 1, determines the storage order of the image information code signals in the screen storage unit-3d based on the information on the scrolling direction, and stores the image information code signals in the system storage unit. The image information code signal is read from 3b and stored in the screen storage section 3d.

FIG. 3 is a plan view of a keyboard used as the input device l. It includes a JIS layout key part 1a for inputting kana, alphanumeric characters and symbols, a numeric key part 1b for inputting numbers, and function keys 1c for instructing various controls. There is a scroll instruction key within the function key 1c, the key 1c1 is used to instruct the displayed image to scroll upward, and the key 1c2 is used to instruct the displayed image to scroll downward. Also, key 1
The key c3 is used to instruct the displayed image to be scrolled to the right, and the key 1c4 is used to instruct the displayed image to be scrolled to the left (6).

FIG. 4 is an overall view of the display image 7 on the display screen 5a of the display section 5, and the frame 7b is provided for explanation purposes to clarify each character unit. In this example, the display image is 10 characters horizontally,
Ten vertical lines of characters are displayed.

FIG. 5 is a diagram showing the screen storage section 3d, which has one memory space for each character of the display image 7, for a total of 100 memory spaces. Furthermore, one memory space is composed of, for example, a 1-by-1- (=8 bits) memory element. Then, the address number of the screen storage section 3d is from 1 to 1 from the upper left of the display image 7 to the right, corresponding to the display screen 5a.
0, the count is sequentially counted up from left to right from 11 to 20 in correspondence with the next line, and the lower right corresponds to 100. In addition,
The numbers in the figure are address numbers added for explanation purposes.

FIG. 6 is a scroll display execution flowchart. Here, scrolling in the vertical direction will be described. The storage control unit 3c stores this (7) when the operator instructs the scroll direction using the keys 1c1 to 1c4. Then, the direction of scrolling is determined. For example, when the operator presses the key 1cl and instructs to scroll the display image 7 to "2", the memory control unit 3c
adds (+1) to the display start line number a. Next, the memory space corresponding to the bottom screen position of the screen storage section 3d, that is, address number 9 in the example of the screen storage section 3d in FIG.
Display start line number a of the result of adding the contents from 1 to 100
Rewrite the content from line 10 to line 10 accordingly. The memory space corresponding to the 9th line of the screen storage unit 3d, that is, the contents from 81 to 90 in the example of FIG. The contents of the screen storage section 3d are rewritten upward. Further, when the operator instructs to scroll the display image 7 downward by pressing the key 1c2, the storage control unit 3c adds (-) to the display start line number a. Next, the screen storage section 3d
The memory space corresponding to the topmost screen position of No. 1, that is, in the example of the screen storage section 3d in FIG. Rewrite it to . Screen storage section 3
The memory space corresponding to the second line of d, that is, the contents from 11 to 20 in the example of Fig. 5, is rewritten to the contents of the second line from the display start line number a of the addition result, and then sequentially downwards on the screen. The contents of the screen storage section 3d are rewritten.

Up and down scrolling has been described above in FIG. 6, but in the case of horizontal scrolling, addition (or subtraction) of the display start line number 'b' is also performed.

It is possible to replace the primary side of the contents of the screen storage section 3d in the column direction. Also, large black in one diagonal direction: □−
Display start row □ number a and display start column number: 2;
２：π：＝：２、：：：、i"""゛り°" ゛Also,
Although this embodiment has been described using a so-called code refresh type, the same applies to a bitmap type.

According to one embodiment of the present invention, since the content that the operator wants to display can be displayed more quickly, the operator's frustration due to a decrease in display speed can be eliminated, and (9) the display device has a good scrolling function and has improved operability. can be obtained.

〔Effect of the invention〕

According to the present invention, it is possible to obtain a display device having a large crawl function with good operability and capable of eliminating operator frustration due to a decrease in display speed.

[Brief explanation of the drawing]

First figure Japan! A block diagram showing the basic configuration of the food processor, Figure i2 is a diagram showing the main sections of the internal configuration of the control unit 3, Figure 3 is a side view of the 4-board used as the input device 1, and Figure 4 is a diagram showing the main sections of the internal configuration of the control unit 3. FIG. 5 is a diagram showing the display of the display section 5, an overall view of the display 1 image 7 on the screen 5a, and FIG. 6 is a diagram showing the screen storage section 3d, and FIG. 6 is a scroll display execution flowchart. 2...Display device. Agent Patent Attorney Akio Takahashi (10)

Claims (1)

[Claims] 1. A display device equipped with a scroll display function, characterized in that it has a rewriting means for sequentially rewriting the display screen from the row, column, raster, or dot side that is newly cursed by scrolling.