JPH0283583A - display device - 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] [Summary] Provided is a display device that is capable of displaying images with different resolutions as needed, with respect to a display device in which a plurality of display areas with different pixel densities are integrally provided on the same display surface. For the purpose of A second display area in which a plurality of pixels are arranged in a matrix along the main scanning direction and the sub-scanning direction is formed on the same display surface; The pixel columns arranged at each scanning address in the main scanning direction and the pixel columns arranged along the sub-scanning direction in the second display area are each scanned by a single main scanning/sub-scanning signal, and the display position (the 1 area/second area) so that the same image can be displayed with different resolutions.

[Industrial Application Field] The present invention relates to a display device having a plurality of display areas with different pixel densities.

A terminal display device such as a computer system generally has 1
CRTs with pixel densities of approximately 120 dots per inch (ie, 120 dpi) have been used.

For example, in a verification automation system in a field where seals and signatures are used to verify customers in transactions, such as financial institutions, the pattern of the customer's seal or signature is imaged in advance.
The data is registered in the database (240 dpi image data is the standard), and during verification, the data obtained by reading the verified seal and signature presented by the customer with an image reader ( 240dp
+ resolution is the standard) and the image data read from the above database are displayed on a display device (resolution 240 dpi) dedicated for verification, and the actual size image of the seal or signature displayed on the display device is displayed. Compare and match visually.

However, such a system requires a display device dedicated to collation in addition to the normal terminal display device for displaying characters, etc., which takes up extra work space on the desk and requires multiple There are problems such as poor workability due to the need to change the line of sight significantly in order to view the display device, and a display device that can display a real-size display for comparison on the same display screen compared to a normal display. is desired.

[Conventional technology] FIG. 4 shows the configuration of a conventional verification work automation system.

In FIG. 4, a verification terminal device 1 is connected to a host 3 via a communication line 2, etc., and the host 3 stores an image data file 4 in which a customer's seal or signature pattern is registered in advance as image data. We are prepared.

The collation terminal device 1 is connected to a character/graphic display device 5, a seal/famous image display device 6, and an input device 7 such as a keyboard or an image reader, and the character/graphic display device 5 receives input from the input device 7 such as a keyboard. Used for normal display such as displaying character data, stamps, etc.
The signature image display device 6 displays the pattern of the stamp or signature to be verified read by the input device 7 such as an image reader, and the image data from the image data file 4 in actual size via the second display circuit 9. The pattern is then visually checked.

In such systems, the image reader typically uses 240 dpi to obtain sufficient reading resolution.
In addition to using the above pixel density, the seal/signature image display device 6 also uses a pixel density of 240 dpi in order to display the image in actual size. On the other hand, the character/graphic display device 5 is a popular type C with a pixel density of 120 dpi.
RT is commonly used.

[Problems to be Solved by the Invention] However, in the conventional verification work automation system, in addition to a terminal display device having a normal pixel density (>120 dpi), a high resolution device for displaying seals and famous names in actual size is required. Since it requires a dedicated display device for density, there are problems such as it takes up extra work space on your desk, and it is difficult to work because you have to change your line of sight significantly to view multiple display devices. In other words, the pixel density of the image reader for reading the stamps and signatures to be verified is 240 dpi.
The pixel density of a normal terminal display device is 120d.
Since the image data read by an image reader is reproduced on a normal terminal display device, the reproduced image will be four times the actual size, and visual verification (240 dl) (verification with a full-sized image with a resolution higher than i) will be possible. become unable to do so. Therefore, conventionally, a dedicated display device for verification has been separately provided.

The present invention has been made in view of such problems,
It is an object of the present invention to provide a small display device having a plurality of display areas with different pixel densities and excellent visibility.

[Means to solve the problem] FIG. 1 is a diagram explaining the principle of the present invention.

First, the present invention is directed to a display device in which a plurality of display areas A and B having different pixel densities are integrally provided on a single display surface C.

In the present invention, for such a display device, the pitch interval β (
The second display area B with a high pixel density of α>β) is placed on the same display surface C.
Image display area A is attached to the .

By making the main scanning addresses y1 to yn of B common, scanning of each main scanning address is performed in common, and the sub scanning addresses x1 to xm to the first display area and the sub scanning address z1 of the second display area B ~zk was configured to be continuously scanned by a single sub-scanning signal.

Furthermore, these display areas A and B are preferably constructed of a flat display such as a liquid crystal display, a plasma display, or an El panel.

[Function] According to the display device of the present invention having such a configuration, the first. Each pixel column in the main scanning direction of the second display areas A and B is scanned in common to display the respective display areas A.

Since the image is reproduced by continuously scanning the pixel row in the sub-scanning direction of B with a single sub-scanning signal, multiple images with different resolutions can be displayed on a single display circuit (for low pixel density display). be able to. That is, by changing the arrangement density of pixels on the display screen, a display device having a plurality of resolution areas can be constructed using a single main/sub-scanning circuit. As a result, normal display of characters, etc. is performed in the first display area with a low pixel density, and display for verification of seals, signatures, etc. is performed in the second display area B with a high pixel density. It is possible to improve visibility and downsize.

[Embodiment] FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 2 shows a collation work automation system to which a display device 10 according to the present invention is applied, in which a collation terminal device 11 is connected to a communication line 1.
2 to a host 13, and the host 13 is provided with an image data file 14 in which a customer's seal or signature pattern is registered in advance as image data.

The verification terminal device 11 displays the display device 1 via the display circuit 15.
0 is connected, and the image reader 16 and key
Board 17 is connected.

As shown in FIG. 3, the display device 10 has a display surface C that includes a first display area with a low pixel density and a second display area B with a high pixel density.

B is formed of a flat display such as a liquid crystal display, a plasma display, or an EL panel.

That is, in FIG. 3, the first display area is 120 dpi.
The first display area tfcB has a pixel array of 960 dots in the main scanning direction and 700 dots in the sub-scanning direction at a pitch interval of
has a pixel array of 960 dots in the main scanning direction and 300 dots in the sub-scanning direction at a pitch interval of 240 dpi. Furthermore, the first. Main scanning address y of second display areas A and B
Wiring is performed so that a common scan is performed for each pixel column arranged according to 1 to y960, and sub-scanning address x1 to x700
The pixel columns arranged along z1 to z300 are wired so as to be continuously scanned by a single sub-scanning signal.

Then, the data read by the image reader 16 having a resolution of 240 dpi and the data read from the image data file 14 (
240 dpi data) is displayed in the second display area B in actual size, and character data etc. from the keyboard 17 and the host 13 are displayed in the first display area. Note that the display device 10 of this embodiment is a well-known video I/F.
Needless to say, it includes a circuit and a scanning circuit.

In this way, according to this embodiment, since it is formed using a flat display, it is possible to realize a smaller size and thinner structure, and by providing a plurality of display areas with different pixel densities, a plurality of images with different resolutions can be displayed on a single screen. It is possible to provide a display device that can be displayed on the same screen using a display circuit, has excellent visibility, and is suitable for a verification work automation system.

[Effects of the Invention] As explained above, according to the present invention, since display areas with different pixel densities are integrally provided on the same display surface, it is possible to appropriately display a plurality of images with different resolutions, which is different from the conventional method. There is no need to use multiple dedicated display devices depending on the purpose. Furthermore, since it is compatible with conventional scanning methods, it has compatibility with conventional systems. Furthermore, since each display area is placed on the same display surface, multiple images can be viewed without having to change the line of sight, resulting in excellent visibility, making it suitable for applications such as verification automation systems. There is.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating the principle of the present invention; FIG. 2 is a configuration diagram of an embodiment of the present invention; FIG. 3 is a diagram illustrating the configuration of an embodiment of a display device; FIG. 4 is a diagram illustrating the configuration of a conventional example. In the figure, A: first display area B: second display area C: display surface y1 to yn, y1 to y960: main scanning address x1 to x
m, ×1 to ×700: Sub-scanning address of the first display area Z1-zk, Z1-z300: Sub-scanning address of the second display area Display device Verification terminal device Line host image/data/file display circuit image/reader key・Board 1, "2\-2, /

Claims (1)

[Claims] A first display area (
A); A second display area (B) in which a plurality of pixels are arranged in a matrix along the main scanning direction and the sub-scanning direction at a higher pixel density than the first display area (A) is used for the same display. Face (C
), and pixel columns arranged at each scanning address (y1 to yn) in the main scanning direction of the first and second display areas (A, B) and each scanning address (x1 to xm, The pixel density of the displayed image is changed by scanning the pixel rows arranged along z1 to zk with a single main scanning signal/sub-scanning signal and changing the display position (area A/area B). A display device characterized by enabling.