JPS6017113B2 - Display control method of display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display control method for a display device, and in particular, a method for controlling the display of documents that cannot be displayed on one screen of a display device.
CR (Optical Character Read
r: Optical character display device) and de/``Relates to a display control method when displaying on a spray device.

Generally, the display configuration of one screen of a display device is as follows:
In addition to a data display section that displays data such as forms, there is usually a guidance display section below this section.

This guidance display section displays instructions for the operator, such as an instruction to correct unreadable parts of a form or an error correction instruction for the total amount. Conventionally, a memory area is provided for each screen to accommodate this kind of display configuration.
In other words, the data display part, for example, 22 lines x 8 characters, and the guidance display part, for example, 2 lines x 8 characters, are combined into one.
A memory area is provided for every 2 screens x 80 characters. Therefore, one screen is larger than 2 rows x 8 squares, for example 66
When storing a form with 90 lines x 90 characters using OCR, it is stored in four different memory areas in the address space, and when displaying these stored contents on the screen, the address specification for each memory area is required. was changing sequentially to display multiple screens. However, because the guidance display part is constantly changing and is common among multiple screens, in the conventional method described above, for example,
Before moving from the first screen display to the second screen display,
Data in the guidance display area in the memory area corresponding to the second screen must be transferred to the guidance display area in the memory area corresponding to the second screen, resulting in complicated control. This increases the processing time for displaying the screen, and since it includes guidance display areas corresponding to the number of screen memo screens, there are problems such as the overall memory capacity is large. An object of the present invention is to provide a plurality of data display areas in the same address space based on the idea of providing a common guidance display area for a plurality of data display areas, and to provide a plurality of data display areas in the same address space, for example, adjacent addresses. By providing a common guidance display area in the space and selecting the plurality of data display areas, only the data display portion of the display screen can be switched, thereby eliminating the need to transfer data within the guidance display area and improving screen display. The purpose of the present invention is to shorten the processing time, reduce the guidance display area, reduce the overall memory capacity, and solve the above-mentioned problems in the conventional method.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a block circuit diagram of a display control device for a conventional display device.

The screen memory 3 in FIG.
Assume that the capacity is to store data for a screen. In this case, data display area 31a and guidance display area 31b store data corresponding to the first screen, data display area 32a and guidance display area 32b
stores data corresponding to the second screen, data display area 33a and guidance display area 33b store data corresponding to the third screen, and data display area 34a and guidance display area 34b store data corresponding to the fourth screen. Store data corresponding to the screen. Further, each data display area 31a, 32a, 33a and 34a corresponds to a data display portion 41 of display device 4, and each guidance display area 31b, 32b, 33b and 34b corresponds to guidance display portion 42 of display device 4.
Assuming a case where documents, etc. equivalent to four screens of the display device 4 are read and displayed on the screen, first, the documents, etc. are
read by RI, these read data are sent to CP
The data is sequentially transferred to and stored in the addressed data display areas 31a, 32a, 33a, and 34a by the U (Central Processing Unit) 2 via the data path 12. When displaying the data stored in this way on the display device 4, the data display area 31a is used as the first screen.
and the guidance display area 31b are addressed by the CPU 2, and the data in each area is transferred to the data bus 13.
displayed on the screen via. Next, before displaying the second screen, the guidance display area 31 is
The data of b is transferred to the guidance display area 32b.
After that, the data display area 32a and guidance display area 32b addressed by the CPU 2
data is displayed on the screen of the display device 4. Similarly, before displaying the third or fourth screen, the data in the guidance display area 32b or 33b is transferred to the guidance display area 33b or 34b. do. In this way, when displaying a form or the like that is larger than one screen of the display device 4, it is necessary to transfer the data in the guidance display area in advance before changing the display screen, and as a result, the processing time becomes The screen memory 3 also includes a plurality of guidance display areas 31b, 32b,
Since 33b and 34b are included, there is a problem that the total memory capacity is large. Note that 11 is an address path. FIG. 2 is a block circuit diagram of a display control device for a display device to which a method according to an embodiment of the present invention is applied, and the above-mentioned problems are solved.

In FIG. 2, the same components as in FIG. 1 are given the same reference numerals. Unlike the case in FIG. 1, data display areas 31'a, 32'a, 33'a and 34'a are arranged in the same address space, and therefore,
Selection of these areas is performed by the address designation by the CPU 2 and the selection operation of the area selection section 5. Further, one guidance display area 3'b is provided in common as a guidance display area. First, open the forms etc.
read by CRI, these read data are
Data display area 3 addressed by PU2
1'a, 32'a, 33'a and 34'a, the data is transferred to and stored in the area selected by the area selection unit 5. In this case, the area selection section 5 sequentially selects the data display areas 31'a, 32'a, 33'a and 34'a via the selection lines 51, 52, 53 and 54.
When displaying the data stored in each data display IJ in this way on the display device 4, the area selection unit 5 selects the data display area 31'a as the first screen, When the CPU 2 sequentially specifies the common address of the data display area and the address of the guidance display area 3'b, the data display area 31'a
and the data in the guidance display area 3'b are displayed on the screen of the display device 4. Next, when displaying the second screen, the area selection unit 5 selects the data display area 32'a, and the CPU 2 selects the common address of the data display area and the guidance display area 3'b.
When you specify the addresses in sequence, the data display area 32
'a and the data in the guidance display area 3'b are displayed on the screen of the display device 4. Hereinafter, when the third and fourth screens are to be displayed, they are performed in exactly the same way, except that the selection made by the area selection section 5 is different. In this way, when displaying a plurality of screens, the area selection unit 5 selects a desired data display area from a group of data display areas provided in the common address space, and the CPU
2, the screens are sequentially switched by sequentially addressing the data display area and one guidance display area. In FIG. 2, the data display area and the guidance display area are provided as areas of the screen memory 3', but they may also be provided as independent memories.

In this case as well, the addresses of each data display memory are shared. According to the present invention, it is possible to eliminate the need for data transfer of the guidance display area, thereby reducing the screen display processing time and reducing the guidance display area in the screen memory. , Therefore, the total memory capacity can be reduced, which is useful for solving the problems of the above-mentioned conventional system.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of a conventional display control device for a display device, and FIG. 2 is a block circuit diagram of a display control device for a display device to which a system according to an embodiment of the present invention is applied. Explanation of codes, 1: OCR (optical character reader), 2:
CPU (Central Processing Unit), 3, 3': Screen memory, 4:
Display device, 5: Area selection section, 11, 11':
Address bus, 12, 13, 12', 13': Data bus, 31a to 34a, 31'a to 34'a: Data display area, 31b to 34b, 3'b: Guidance display area, 41: Data display part, 42: Guidance display portion, 51, 52, 53, 54: Selection line. Figure 1 Figure 2

Claims (1)

[Claims] 1. In a display device whose screen is divided into two sections, a data display section and a guidance display section, a plurality of memories each corresponding to the data display section and located in the same address space, and a plurality of memories corresponding to the guidance display section and arranged in the same address space. one guidance memory located in an address space different from the address space, and only the data display portion is sequentially switched by sequentially selecting each of the plurality of memories. Display control method.