JPH0561629A - Method and device for controlling display - Google Patents

Abstract

PURPOSE:To simply execute processing to be executed up to the redisplay of an image in a small screen at the time of re-editing or redisplaying the image based upon the scrolling of the small screen or the super-position of small screens in the case of displaying plural small screens in the whole screen. CONSTITUTION:At the time of simultaneously editing plural documents 111 to 113, respective documents 111 to 113 are independently displayed on respective small screens SUB0 to SUB2. At the display, the display data of the documents 111, 113 are commanded to be saved. By the execution, character code data displayed in the small screens SUB0, SUB2 are stored in a memory 115. If the displayed small screens are scrolled or either one of them is erased, the displayed images are re-edited or redisplayed based upon the character code data stored in the memory 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic equipment equipped with a display device.

[0002]

2. Description of the Related Art Conventionally, there is a display area in which a plurality of small screens (windows or sub-screens) can be set. A plurality of these small screens can be displayed at the same time and may overlap each other.

Further, when displaying these small screens, the display data in the overwritten area (the portion below the small screen) is saved in the memory. The saved data is written back to the original area when the small screen is cleared, and is restored to the state before the small screen was displayed.

[0004]

When the display is performed as described above, various display data such as different display formats inside the small screen, different fonts, and drawn figures are mixed. The data saved because it has been overwritten is a dot imager for display.

This method has the following two problems.

1. It is easy to scroll the display data in the small screen by one line, but in the area that is not covered or covered by the small screen but is not displayed, scroll processing is performed in the saved dot image data. Must be done. The process of scrolling each of the displayed data and the saved data is complicated and takes time.

2. In the display processing for the small screen, the processing for the area that is not actually displayed must be performed on the saved data, which is complicated and requires a long processing time.

Although the above two processes are complicated, if not correctly performed, the hidden part cannot be correctly displayed when the position of the small screen is moved or the overwritten display is erased.

The present invention has been made in view of the above-described conventional example, and even when a part of a small screen cannot be displayed, a display control method and apparatus capable of quickly re-editing an image made to the part that cannot be displayed. The purpose is to provide.

[0010]

In order to achieve the above object, a display control device according to the present invention has the following configuration.

A display control device for forming or erasing a plurality of small screens in one screen and displaying an independent image in each of the formed small screens, which is covered by the small screens. A first storage unit for storing image data of the display area; a second storage unit for storing character code data which is a basis of the image data displayed in the small screen; and a second storage unit. Editing means for editing the image in the small screen based on the stored character code data.

In order to achieve the above object, the display control method according to the present invention has the following configuration.

A display control method for forming or erasing a plurality of small screens in one screen and displaying an independent image in each of the formed small screens, which is covered by the small screens. The first storage process for storing the image data of the display area, the second storage process for storing the character code data which is the basis of the image data displayed in the small screen, and the second storage process. An editing step of editing the image in the small screen based on the stored character code data.

[0014]

With the above structure, when a small screen is newly formed on the screen, the image data to be covered by the small screen is stored, and the character code data in the small screen is also stored. When the display content is re-edited and displayed again, image data is formed based on the character code data and displayed on a small screen.

[0015]

【Example】

[Embodiment 1] As an embodiment of the display control method and apparatus of the present invention, the document processing apparatus of FIG. 1 will be described.

<Structure> 1 is a CPU, which controls the entire document processing apparatus of the embodiment. 2 is a bus line, CP
A signal line for exchanging data signals, control signals and the like is formed by connecting U and each constituent element. 3 for ROM, 4 for RA
The ROM 3 stores a part of a program executed by the CPU 1 and data such as a character code, and the RAM 4 stores a part of the program and data. 5 is also RA
M is a VRAM for storing data to be displayed on the display unit 6 as a dot image. Reference numeral 7 is an input unit for inputting data such as a keyboard or mouse / image scanner, 8 is a printing unit for printing out data, and 9 is a communication interface for connecting the document processing apparatus to an external device such as a computer.

Displaying a small screen and other processing in the above apparatus will be described with reference to the flowcharts of FIGS. 8, 9 and 10.

FIG. 2 shows an example in which three small screens SUB0, SUB1, and SUB2 are displayed on the display screen in the above apparatus. Each small screen displays a separate document.
The display order of the small screen is from the bottom, SUB0 → SUB1 → S
It is in the order of UB2, and they are on top of each other. There is also data displayed on the display unit 6 before the three small screens are displayed. In such a situation, the small screen SUB0
Follow the steps to display. FIG. 8 is a flowchart showing the procedure for displaying a small screen.

First, when the display position of the small screen SUB0 is determined (S81), immediately before displaying it, the small screen SUB0 is displayed.
The display data Ba of the portion a covered by 0 is stored in the save data area 31 of FIG. 3 (S82). At this time,
The character code data in the small screen SUB0 is also stored in the save data area (S83). Save data area 3
1 is reserved in the RAM 4. After this, the first small screen S
UB0 is displayed (S84).

Next, the small screen SUB1 is displayed. At this time, the small screen SUB1 is also displayed in the same manner. However, the small screen SUB1 also covers a part of the small screen SUB0. Therefore, the portion b covered by the small screen SUB1 includes a part of the small screen SUB0, and it is necessary to save the data Bb.

When the small screen SUB2 is displayed, two display data Bb and Bc, that is, a part c that is actually rewritten by the display and a part d of the small screen SUB2 that is out of the display area are saved in the save data area 31. I'll do it.

The above display data Ba, Bb, Bc, Bd
Are all dot image data and are saved until the corresponding small screen is canceled (cleared).

The saving of the character code to be displayed as in step S82 is to be selectively performed for each small screen. Figure 4 shows small screen SUB0 and small screen SU
It is a state of the data save area 41 when the character code of B2 is designated to be saved. Step S82
The save data area in is the area 41.

In the save data area 41, all the character codes displayed in the small screen SUB0 are stored in c ₀ . The character code data stored here is
It is held until the corresponding small screen is canceled (cleared), and is updated every time it is displayed. In exactly the same manner, the character code displayed on the small screen SUB2 is saved in c ₂ .

FIG. 11 shows the above situation.
Reference numerals 111 to 113 are three document files, and hatched portions are displayed as small screens SUB0 to SUB2. At this time, the data of the portion which is covered by the small screen or which is protruding is stored in the save area 114 as Ba to
The character code data of the screen specifically instructed among the small screens being displayed is saved as Bd and saved as c ₀ · c _{2 in the} save area 115.

In the above state, SUB0
The method of displaying and scrolling the characters in the hidden portion of the character and the protruding portion of the SUB2 will be described respectively with flowcharts.

<Display of Characters> FIG. 9 is a flow chart of processing when the displayed small screen is erased. A description will be given along this flow chart.

As shown in FIG. 5, the fourth row 1 of the small screen SUB0
When 10 characters of the character string "ABCDEFGHIJ" are displayed from the digit, the small screen SUB1 blocks the character "F" from the middle and only a part of the character can be displayed. It is possible to display the partly lacking font by managing the area occupied by the small screen SUB1 in dot units of the display device.

When the small screen SUB1 is erased from the displayed state, the following processing is performed.

First, when the position of the small screen SUB1 to be erased is determined (S91), the display image data in that portion is erased (S92), and the data B saved therein is saved.
b is restored (S93). At this time, the character string “FGHIJ” whose upper half is partially hidden is displayed in the save area 42.
The image data is reconstructed from the character code data c ₀ that has been saved in and is restored and displayed. Therefore, the character string "FGHIJ" is clearly displayed again.

Similarly to this, the small screen SU of FIG.
Similar character string "ABCDEF from the 4th row, 11th digit of B2
When "GHIJ" is displayed, the character "F" reaches the outside of the frame of the display device and cannot be displayed any more. The images that cannot be displayed are positioned so that the entire small screen SUB2 enters the display device. When moved, the saved character code data c ₂ can be referred to and displayed immediately.

As described above, the display of the character can be restored by a simple process based on the saved character code data.

<Scroll> FIG. 10 is a flow chart showing the processing when scrolling the displayed small screen. The scroll processing will be described along with this.

In FIG. 7, a character string 71 of 18 characters "012 to FGH" starting from the last row of the small screen SUB0 is displayed. As shown in FIG. 7A, the visible part ends in the middle of the character "6", and the part behind it is the small screen SUB1.
Hidden in. When the small screen SUB0 is scrolled up in such a state, the display state changes to that shown in FIG.

The character string 71 is followed by "IJKLM
The character string 72 "NOPQR" is continuous. The character string 71 is moved up by one line by scrolling up, and the character string 72 is displayed on the bottom line of the small screen SUB0 (S10).
1). Of course, also in this case, not all the character strings 72 are displayed, and the part hidden in the small screen SUB1 is not displayed. As shown in FIG. 7B, the character string “IJKLMN” and the character “O” are displayed halfway. Although the remaining part is not displayed, since there is saved data c _{0 of the} data displayed in SUB0, the data c ₀ is also scrolled to the same state as scroll up (S102). In this way, when the small screen SUB1 is erased, the SU within the broken line in FIG.
The part hidden in B1 is the saved character data c
It becomes possible to return by referring to ₀ .

Regarding the scroll-up of the small screen SUB2, the scroll-up of SUB0 scrolls up the character code of the save data c ₂ so that when the small screen SUB2 is moved to a position where all of the characters can be displayed, it is out of the display screen. It can be displayed immediately with the whole scrolled up, including the parts where

As described above, by saving the contents of the displayed small screen in the character code format, the small screen is covered by another small screen, or is disturbed from the screen frame. Even in a part that cannot be displayed due to a problem, it is possible to easily and quickly respond to a request for scrolling or redisplaying an image.

[0038]

[Other Examples]

Second Embodiment In the first embodiment, the display content of each small screen has been described in the form of saving the character code data. However, in an actual application, there may be a case where it is possible to distinguish between the one that needs the editing process of the hidden and non-displayed part and the one that does not need the editing process. Therefore, for the displayed small screen, it is possible to specify in advance that "character code data is saved for all small screens" or "character code data is not saved for all small screens".

[Embodiment 3] Since the small screen is an independent display screen, it is possible to display graphics and different fonts.
However, in the saved character code data, the saving of the character code becomes complicated unless one kind of font is associated with one small screen. Therefore, if a window is further provided in the small screen and this window can be displayed and scrolled as a further small screen, one small screen can be divided into a plurality of smaller clusters for management. The used application program can be easily designed.

As described above, as described in the embodiment, the small screen can be freely arranged regardless of its position. Further, in the display process by designating which small screen, the hidden part can be displayed and scrolled. Therefore, when all the small screens can be seen, the display is restored according to the instruction. Further, when the display / scrolling is not required, the character code data is not saved, so that the processing can be speeded up.

Further, although the embodiment has dealt with the document processing device, the invention is not limited to this, and a device for managing image display for each small screen may be a device for another purpose or a general-purpose device. If so, it is the subject of the present invention.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0043]

As described above, the display control method and apparatus of the present invention can quickly re-edit an image made on a portion that cannot be displayed even when a portion of the small screen cannot be displayed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a document processing apparatus that is an embodiment of the present invention.

FIG. 2 is a display example of a small screen.

FIG. 3 is a save area for dot image data.

FIG. 4 is a save area for character code data.

FIG. 5 is a visible region of a small screen SUB0.

FIG. 6 is a visible region of a small screen SUB2.

FIG. 7 is an explanatory diagram of scrolling of a small screen SUB0.

FIG. 8 is a flowchart of a small screen display.

FIG. 9 is a flowchart for deleting a small screen.

FIG. 10 is a flowchart of scroll processing.

FIG. 11 is a diagram showing a relationship between a small screen display and a save area.

[Explanation of symbols]

 1 CPU, 2 bus, 3 ROM, 4 RAM, 5 VRAM, 6 display device, 7 input device, 8 printing device, 9 communication interface, and 10 display device.

Claims (2)

[Claims] 1. A display control device for forming or erasing a plurality of small screens in one screen and displaying an independent image in each of the formed small screens. First storage means for storing image data of the displayed display area, second storage means for storing character code data that is a basis of the image data displayed in the small screen, and second storage means. A display control device comprising: an editing unit that edits an image in the small screen based on the character code data stored in the unit. 2. A display control method for forming or erasing a plurality of small screens in one screen and displaying an independent image in each of the formed small screens. A first storage step of storing image data of the displayed display area, a second storage step of storing character code data which is a basis of the image data displayed in the small screen, and the second storage step. An edit step of editing an image in the small screen based on the character code data stored in the step, and a display control method.