JPH0764524A - Image display device - Google Patents

Abstract

PURPOSE:To provide an image display device capable of easily performing image display and easily changing and adding the order of display even when many kinds of readout and display orders of image information divided into plural rectangular areas are provided. CONSTITUTION:This device is constituted of a keyboard 110 which designates the display method of an image, an image storage part 120 in which the image information is stored, a display control part 130 equipped with a division display storage means 131 which stores by reading out the image information from the image storage part 120, a one-screen display control means 132 which divides the image information of one screen into the plural rectangular areas, an image transfer control means 133 which transfers the image information to a display storage means 141, and an address generating means 134 which generates an address signal for transfer, and a display part 140 equipped with the display storage means 141 which stores the image information transferred from the image transfer control means 133, and a video signal generating means 142 which displays the image information on a display 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device for displaying digital image information on a display, and more particularly to dividing one screen of image information into a plurality of rectangular areas and displaying the image information in units of each rectangular area. The present invention relates to an image display device for performing.

[0002]

2. Description of the Related Art As a conventional technique, for example, Japanese Unexamined Patent Publication No.
In the device related to the image display described in Japanese Patent No. 148369, when the image information for one screen is divided into a plurality of rectangular areas and the image information is displayed in units of each rectangular area, the display order of each rectangular area Is fixedly incorporated in the display control circuit or the display control program. Therefore, the display order is not changed arbitrarily.

[0003]

Therefore, in the conventional image display device, when it is attempted to cope with a plurality of types of the reading / display order of each rectangular area, the display control circuit is required correspondingly, and the display control circuit is required. The scale of the software increases.
Further, even if the program is realized by software, the scale of the program becomes large and the cost becomes high. Furthermore, it is not possible to flexibly deal with changing or adding the order of image display.

An object of the present invention is to read each rectangular area.
Even if there are multiple types of display order, image display can be realized with hardware or program scale of almost the same scale as in the case of one type of display order, and the display order can be easily changed or added. An object is to provide an image display device.

[0005]

In order to achieve the above-mentioned object, the image display device of the present invention has image division information and a rectangle which are necessary for dividing one screen of image information into a plurality of rectangle areas. The divided display storage means for storing the display order of the areas in the divided display table, and the image information for one screen is divided into the short areas based on the image division information and the display order stored in the divided display table. The display control unit is provided with a one-screen display control unit for performing the reading / displaying process and an image transfer control unit for transferring the image information processed by the one-screen display control unit to the display unit.

[0006]

According to the image display apparatus of the present invention, the divided display storage means determines the image division information and the display order of the short areas required to divide the image information for one screen into a plurality of short areas. , Store in the split display table. Based on the image division information and the display order stored in the divided display table, the one-screen display control unit divides the image information for one screen into rectangular areas,
Further, the reading / display processing of the short area is performed by the display order instruction of the keyboard. The processed image information is transferred to the display unit by the image transfer control means, and is displayed on the display via the display unit. As a result, even if there are multiple types of reading / displaying order for each rectangular area,
It is possible to display images on almost the same scale of hardware or program as in the case of one type of display order.
In addition, it is easy to change or add the order of image display.

[0007]

EXAMPLE An image display apparatus according to an example of the present invention will be described below.

FIG. 1 shows the configuration of an image display device according to an embodiment of the present invention. A keyboard 110 for designating an image display method and an image storage section 120 for storing image information.
Then, the image information is read from the image storage unit 120, the image information for one screen is divided into a plurality of rectangular areas, and the display unit 14
The display control unit 130 transfers the image information transferred from the display control unit 130 to the display 0 and displays the image information transferred from the display control unit 130 on the display 12. Display control unit 1
30 is composed of a split display storage means 131, a single screen display control means 132, an image transfer control means 133, and an address generation means 134. Split display storage means 13
Reference numeral 1 stores the image division information necessary for dividing the image information read from the image storage unit 120 into a plurality of short regions and the display order of the short regions in the divided display table. The one-screen display control unit 132 divides the image information for one screen into a plurality of rectangular areas based on the image division information of the divided display table stored in the divided display storage unit 131. The single-screen display control means 132 also displays the display order and keys of the short areas of the split display table stored in the split display storage means 131.
The position of the rectangular area to be read / displayed is determined by an input instruction from the board 110. Further, the one-screen display control unit 132 sets the image information divided into rectangular areas in the image transfer control unit 133, and the image transfer control unit 13 is set.
Start 3. The image transfer control unit 133 causes the address generation unit 134 to generate a read address from the image storage unit 120 and a write address signal to the display storage unit 141 of the display unit 140 according to the set image information to transfer the image information. To do. The display unit 140 includes a display storage unit 141 and a video signal generation unit 142. The display storage means 141 is the image transfer control means 1
The image information transferred from 33 is stored. The video signal generation means 142 converts the image information stored in the display storage means 141 into an analog video signal and displays it on the display 12.

In order to facilitate the description of the operation of the image display device of the present invention, a case where an image on one screen is divided into 3 × 3, ie, 9 rectangular areas will be described.

FIG. 2 shows a state where one screen of the image information shown in FIG. 1 is divided. (A) shows a state where the one-screen image information 21 is divided into nine rectangular areas. X is the number of horizontal pixels of the image information, and Y is the number of vertical pixels. (B) is a short area image 22 showing nine short diameter areas divided in (a), and x and y respectively show the number of horizontal and vertical pixels in one rectangular area. X,
Y, x, and y are stored in the divided display table as image division information for dividing the image into a plurality of rectangular regions.

FIG. 3 is a flow chart for explaining the operation of the display controller 130 shown in FIG. Before describing the operation of the display control unit 130, the display method and display order of the rectangular area of the present invention will be described with reference to FIGS. 4 and 5.

FIG. 4 is a divided display table 30 showing the display order of each short area when the image information for one screen is divided into a plurality of short areas to be displayed. Split display table 30
Is stored in the divided display storage means 131 together with the image division information, and determines the position of the rectangular area to be read / displayed based on the information in this table when the image is displayed.

FIG. 5 shows the display order of the rectangular areas corresponding to the table names T1 to T5 of the divided display table 30 of FIG. (A) corresponds to the display order of the table T1 in FIG.
A rectangular area is displayed in a spiral shape in a clockwise direction from A. (B) corresponds to the display order of the table T2 in FIG. 4, and is usually called random display, in which a rectangular area is displayed randomly. (C) corresponds to the display order of table T3 in FIG.
It is usually called mosaic display, and it is possible to display in a mosaic shape by first displaying the rectangular area of the hatched frame portion and then displaying the white frame portion. (D)
Corresponds to the display order of the table T4 in FIG. 4, and displays a rectangular area in zigzag from A to the side. (E) corresponds to the display order of the table T5 in FIG. 4, and the vertical line from A is interlacedly scanned to display the short area.

FIG. 6 is a specific display example in which the rectangular region of FIG. 5A is displayed in a spiral shape.

In the present embodiment, it is assumed that the display order of the above five types of rectangular areas is set in the divided display table, and the image display of the present invention is performed using the flowchart of FIG. The operation of the device will be described in detail. It should be noted that the present invention relates to means for dividing image information for one screen into a plurality of short regions and displaying each of the short regions, and a plurality of windows are opened in one screen to obtain a plurality of images. It doesn't relate to multi-window displaying. In step 310, the one-screen display control means 131 uses the keyboard to start displaying the image.
The divided display table name for selecting the display order of the rectangular areas is input from the field 110. The text entered in step 312
The table name is stored in the table name register N. Step 3
At 14, the divided rectangle display counter i is set to 1 and display of the rectangular area is started. In step 316, the divided display table of the divided display storage means 131 is referred to from the table name of the table name register N and the value of the divided rectangular display counter i,
The position of the rectangular area to be displayed is set in the display rectangular position register n. In step 318, the image information reading and display storage means 14 is performed based on the value of the display rectangular position register n, the horizontal pixel number X of the image, and the horizontal and vertical pixel numbers x and y of the rectangular area.
The write start address for 1 is calculated and set in the address register ADR, and the image transfer control means 133 is activated. In steps 320 and 322, the image transfer control unit 133 initializes the rectangular area vertical pixel counter j and the rectangular area horizontal pixel counter k to zero. In step 324, the address generating means 134 causes the rectangular area vertical and horizontal pixel counters j and k and the address register ADR.
Then, a reading address of the image storage unit 120 and a write address to the display storage unit 141 are generated from the value of the vertical direction pixel number Y, and transfer from the image storage unit 120 to the display storage unit 141 is performed. In step 324, step 326, and step 328, the image transfer control unit 133 counts the rectangular area horizontal pixel counter k, and repeats the transfer of the image until the rectangular area horizontal pixel number is reached. In steps 322 to 332, the image transfer control unit 133 counts the rectangular area vertical pixel counter j and repeats the transfer of images until the number of rectangular pixels in the rectangular area is reached to transfer the image within the rectangular area. When the transfer of the rectangular area is completed, the image transfer control unit 133 ends the operation and returns the process to the one-screen display control unit 132. In step 334 and step 336, the one-screen display control unit 132 counts the divided rectangular display counter i, and checks whether the display of the images of all rectangular areas in one screen is completed. When the transfer of all the rectangular areas is completed, the image reading and display processing of one screen is completed.

In the present embodiment, the operator inputs the split display table name every time an image is displayed by the keyboard of the operator.
Although it is supposed to be input with the command, the split display table name is stored in the image information as attribute information of the image information, and it is read from the attribute information of the image information when displaying the image and split display is performed. It is also possible to select a table.

In this embodiment, since the divided display table can be stored in the divided display storage means 131, the divided display table can be easily rewritten, and various display methods can be easily changed and added. You can

[0018]

According to the present invention, the image information for one screen is divided into a plurality of rectangular areas, and each rectangular area is read out.
When the display is performed, even if there are a plurality of types of reading / displaying order for each divided rectangular area, image display can be realized with hardware or a program scale of almost the same scale as in the case of one type of display order. Further, since the display order can be easily changed and added, a high-performance image display device having various types of display methods can be realized at low cost. Further, since it is possible to flexibly deal with the change / addition of the display order, there is also an effect that the cost at the time of changing the specification can be kept low.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an image display device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of dividing one screen of the image information of FIG. 1 into nine rectangular areas.

FIG. 3 is a flowchart illustrating the operation of the display control unit in FIG.

FIG. 4 is an explanatory diagram of a divided short region display order table showing a display order of the short regions divided in FIG.

5 is an explanatory diagram of a display method according to the divided rectangular area display order table shown in FIG.

FIG. 6 is a diagram showing a specific display example of displaying the rectangular region of FIG. 5A in a spiral shape.

[Explanation of symbols]

10 ... Image display device, 12 ... Display, 110 ... Keyboard, 120 ... Image storage unit, 130 ... Display control unit,
131 ... Split display storage means, 132 ... Single screen display control means, 133 ... Image transfer control means, 134 ... Address generation means, 140 ... Display unit, 141 ... Display storage means, 142
... Video signal generating means

Claims (3)

[Claims] 1. A keyboard for designating an image display method,
An image storage unit that stores image information, a display control unit that reads out the image information from the image storage unit and transfers the image information to a display unit, and the image information transferred from the display control unit is stored and displayed on a display. In the image display device including a display unit, a divided display storage for storing the image division information necessary for dividing the image information into a plurality of rectangular regions and the display order of the rectangular regions in a divided display table. Means and
One-screen display control means for dividing the image information into the short regions based on the image division information and the display order stored in the divided display table, and performing reading / display processing of the short regions, An image display device, comprising: an image transfer control unit for transferring the image information processed by the one-screen display control unit to a display unit. 2. The reading / displaying order of each rectangular area of the divided image information according to claim 1,
A table is used to identify the divided display table.
The image display device is characterized in that the rectangular area is read out and displayed based on the information of the divided display table that is specified by a bull name. 3. The image division information and the table name designating a display order of the rectangular area are stored in the image information as attribute information, and the table information indicated by the attribute information of the image information is set. An image display device, wherein the short area is read / displayed based on information of a divided display table.