JPH0713551A - Method and device for display control - Google Patents

Abstract

PURPOSE:To always obtain a good working environment for an operator by detecting the kinds of display devices being connected, automatically selecting an optimum background pattern for the display device and using the pattern. CONSTITUTION:A CPU 1 controls the device based on the information stored in a ROM 2 which stores information including character font and an operating system. A RAM 3 stores the work area of the CPU 1 and the information read from an external ROM 4, an FD and an HD 10. Moreover, a DSP 8 is connected to a CRTC through a cable and is constituted by a CRT, an LCD and a plasma display. The kinds of the DSP 8 are detected, patterns stored in a pattern storage means are read based on the corresponding relationship between the kinds of the DSP 8 stored in a corresponding storage means and the background patterns and the pattern read is displayed as the background pattern of the DSP 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a display control method and apparatus,
In particular, the present invention relates to a display control method and apparatus for selecting and displaying a background pattern suitable for a display device according to the type of the display device.

[0002]

2. Description of the Related Art Conventionally, in display control of a document processing apparatus or the like for inputting and displaying characters, figures and images (hereinafter referred to as documents), a screen is divided into a plurality of sections (701,
702) is displayed separately. In such a display method, when creating a document, one or a plurality of documents are input and displayed in each section. According to this method, you can create another document while referring to one document,
It is known that operations such as copying two documents at the same time with reference to two documents at the same time can be visually performed, which is effective in improving work efficiency of document creation.

Further, in such a display method, a portion on the display screen outside the section for displaying a document or the like is regarded as a background different from the normal document screen, and a uniform color or a uniform repeating pattern such as a checkered pattern or a pattern. Is displayed as a background pattern so that it can be visually recognized that it is outside the section. Usually, one or more background patterns are prepared. When the document processing apparatus is started, a specific pattern is selected and displayed as a background pattern, and after starting, the user can freely select the background pattern and the selected background pattern is When the device is started, it is automatically reselected and displayed.

[0004]

However, in the conventional method, an arbitrary background pattern is set regardless of the kind of the display device connected to the document processing device when the device is activated. When a display is connected to this device, selecting a checkerboard background pattern such as 801 in FIG. 8 causes intense crosstalk specific to the liquid crystal display on the screen, making it difficult to see the entire screen. In some cases, the task of entering a document while looking at the screen had a serious adverse effect. Each rectangle in the figure corresponds to one dot on the screen. Also, when a monochrome CRT display operating in the interlace system is connected to this device, a similar background pattern (for example, 802, 80
When 3) is selected, a violent screen flicker peculiar to a black and white CRT operating in an interlaced system occurs, and the background part constantly flickers, which gives a strong discomfort to the eyes of the operator, and as a result, the work efficiency may be significantly reduced. there were.

An object of the present invention is to detect the type of a display device connected to a document processing device or the like, automatically select an optimum background pattern for the display device, and use the selected background pattern. Accordingly, a display control method and device that always realizes a good working environment for the operator are provided.

[0006]

According to the display control method of the present invention, the type of the connected display device is detected, and the detected type and the type and background pattern of the display device stored in the correspondence storage means are detected. The pattern stored in the pattern storage means is read out based on the correspondence relationship with and the read pattern is displayed as the background pattern of the display device.

Further, the display control device of the present invention includes a correspondence storage means for storing the correspondence between the type of the display device and the background pattern, a pattern storage means for storing the background pattern, and a connected display device. Detecting means for detecting the type of the pattern, the reading means for reading the pattern from the pattern storing means based on the correspondence detected by the detecting means and the correspondence storing means, and the pattern read by the reading means. Is displayed as a background pattern of the display device.

With the above structure, the present invention detects the type of the connected display device, selects the optimum background pattern for the detected type, and displays the background of the display device with the selected background pattern.

[0009]

Embodiments of the present invention will now be described in detail and specifically with reference to the drawings.

FIG. 1 is a block diagram of a document processing apparatus to which the present invention is applied. Reference numeral 1 denotes a central processing unit (CPU), which controls the device based on information stored in a ROM 2 described later. 2 is a read-only memory (RO
M), which stores information such as character fonts and operating systems. A readable / writable memory (RAM) 3 stores information read from a work area of the CPU 1 and external ROM 4, FD and HD 10 described later. Reference numeral 4 is an external read-only memory (external ROM), and 5 is a keyboard controller (KB).
C), which controls the input of data input from the keyboard (KB) 6. A display control device (CRTC) 7 controls the display of information displayed on the display device 8. 9
Is a peripheral device controller (PKC), and controls transfer of information with the external storage device (FD and HD) 10. 1
Reference numeral 1 is a printing device (PRT), and 12 is a system bus for transmitting and receiving data between the respective devices. In addition, DS
P8 is connected to CRTC7 by a cable,
It is composed of a CRT, LCD, plasma display and the like.

The program of this apparatus exists in the ROM 2 or the RAM 3, and the CPU 1 performs the intended processing while sequentially reading the program from the ROM 2 or the RAM 3 through the system bus.

FIG. 2 shows an overall flow chart when the present invention is applied to a character processing device. The operation of the present apparatus will be described below in order using this flowchart.

The flowchart of FIG. 2 starts from the start of the document processing apparatus. Then, in step S1, C
The RTC 7 detects the type of the DSP 8 connected to this device and stores it in the register R1. DSP8
The information indicating the type is a code such as a word or a character code that can specify the type of the DSP 8. It is assumed that this code is stored in the memory in the DSP 8 in advance, but the code is not limited to this.

Next, in step S2, the contents of the register R1 and the contents of the table T1 are compared. The table T1 exists on the ROM 2 or the RAM 3 or the external ROM 4, in which n codes representing one or a plurality of display devices and n background patterns corresponding to them are contained, as shown in FIG. It is stored. In FIG.
For example, type 1 indicates CRT, and pattern 1 is 80 in FIG.
1 shows a pattern, type 2 shows an LCD, and pattern 2 shows 804 in FIG.

In step S2, the code representing the type of display device stored in the register R1 is compared with the code representing the n display devices stored in the table T1. Search whether it exists on T1. Note that the search method is not particularly limited, such as searching in ascending order or descending order in the order registered in the table. The search may end at the time when it is found that the code matching the contents of the register R1 exists in the table T1, or it ends after searching all n elements in the table T1 regardless of whether or not the code exists. May be. Further, the flag indicating whether or not the code matching the content of the register R1 exists in the table T1 is the CPU1 or RA.
It may be in M3 or CRTC7, etc., and its location is not limited as long as it can be referred to in the subsequent step S3.

After completion of the search, it is determined in step S3 whether or not a code matching the code in the register R1 is present in the table T1 based on the flag obtained in step S2.

If it exists, the process proceeds to step S4.
In step S4, when the content of the register R1 matches the type i on the table T1, the background pattern i stored in the table T1 is acquired in the register R2. On the other hand, if it is determined in step S3 that it does not exist, the process proceeds to step S5. In step S5, the background pattern prepared for the case where the content of the register R1 does not exist in the table T1 is acquired in the register R2. At this time, the background pattern is ROM2 or RAM3 or external RO.
It is stored in advance in either M4 or CRTC7. Further, as this background pattern, a pattern completely different from the background pattern stored in the table T1 may be used, or the same pattern may be used as necessary.

Also, the format of the table T1 may be such that, as shown in FIG. 4, a sequence of codes representing the type of display device and a sequence storing a background pattern corresponding thereto are separately stored. There is no problem as long as the correspondence is clearly defined. Further, as shown in FIG. 5, the background pattern itself is stored in the ROM 2 or RAM separately from the table T1.
3 or the external ROM 4 or the like and the addresses thereof are sequentially stored in the table T1.
As long as the correspondence between the sequence of codes representing the type of display unit and the background pattern is clearly defined, there is no problem.

Further, as shown in FIG. 6, even if codes representing different types on the table T1 correspond to the same background pattern, there is no problem in that one background pattern is determined from a certain display type. Absent.

Next, in step S6, the background pattern stored in the register R2 in step S4 or step S5 is displayed on the DSP 8 through the CRTC 7. There are various methods for specifying the background pattern, such as a method of directly setting the content of the register R2 in the CRTC 7 or a method of temporarily writing the content of the register R2 in the RAM 3 and reading it by the CRTC 7 and displaying it on the DSP 8. There is no restriction on the method.

Although the background pattern has been described above, the area and the like are created by a conventional method, and a document or the like is created in the created area.

By the series of processes described above, it becomes possible to automatically change the background pattern in the document processing apparatus in accordance with the type of display device connected to the document processing apparatus. Here, the case where the document processing apparatus is started is described as the start of this processing, but the same applies when the operator prompts the apparatus to set some background pattern after starting the apparatus. Needless to say. Further, the method of selecting the background pattern depending on the type of the display device has been described, but the background pattern may be selected by a difference in display driving, for example, interlaced display and non-interlaced display. Since the detection of the driving method can be known by the set value in the CRTC, its details are omitted. Alternatively, after selecting a background pattern, a list of background patterns may be displayed, and a background pattern may be selected from the list using a keyboard or the like to arbitrarily select the background pattern.

[0023]

As described above, the display control method and device of the present invention automatically detects the type of the connected display device and sets an appropriate background pattern in accordance with the type of the display device. It is possible to realize a comfortable operating environment regardless of type.

[Brief description of drawings]

FIG. 1 is a block diagram of a document processing apparatus to which the present invention is applied.

FIG. 2 is a flowchart showing the processing operation of the present invention.

FIG. 3 is a conceptual diagram showing the relationship between the type of display device and a background pattern.

FIG. 4 is a conceptual diagram showing the relationship between the type of display device and a background pattern.

FIG. 5 is a conceptual diagram showing the relationship between the type of display device and a background pattern.

FIG. 6 is a conceptual diagram showing the relationship between the type of display device and a background pattern.

FIG. 7 is a diagram showing a display state of a display device.

FIG. 8 is a diagram showing a background pattern.

[Explanation of symbols]

 1 CPU 2 ROM 3 RAM 4 External ROM 5 KBC 6 KB 7 CRTC 8 DSP 9 DKC 10 FD, HD 11 PRT 12 System bus

Claims (2)

[Claims] 1. A type of a connected display device is detected and stored in a pattern storage means on the basis of the detected type and the correspondence between the type of the display device and the background pattern stored in the correspondence storage means. A display control method characterized by reading out a read pattern and displaying the read pattern as a background pattern of a display device. 2. Correspondence storage means for storing a correspondence relationship between the type of display device and a background pattern, pattern storage means for storing the background pattern, and detection means for detecting the type of the connected display device. Reading means for reading a pattern from the pattern storage means based on the correspondence detected by the detection means and the correspondence stored in the correspondence storage means, and the pattern read by the reading means is displayed as a background pattern of a display device. And a control means for controlling the display control device.