JPH0863137A - Picture display device - Google Patents

Abstract

PURPOSE: To obtain various pictures having a different image from an original picture with a small amount of picture data. CONSTITUTION: A ROM 42 is provided with storage areas of addresses 1 to (n), and the picture element data of every picture element line of the original picture is stored in the storage area in order from the upper side to the lower side of the screen. The address of the picture element line similar to the case that the same picture as the original picture stored in the ROM is displayed is selected in the center part of the screen. In the upper and lower parts of the screen, the address is selected so that the picture element line selected from the center to the upper part and from the center to the lower part may be gradually reduced, and stored in a VRAM 44 so as to display the picture.

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, and more particularly to an image display device used in a pachinko game machine or the like.

[0002]

2. Description of the Related Art Generally, there are various types of pachinko game machines, and various image display devices are used. A conventional image display device includes a memory (ROM) in which image data is stored (stored) and an image processing LSI (generally, VDP (Vi) which is connected to the memory and processes image data.
video display processor (VDC) or video display control (VDC)
Ler))).

The function of the image processing LSI determines the basic performance of the display device, such as the number of display colors, the number of display screens, the resolution, and the number of overlapping screens.

As a general image display method, a ROM is used.
Image data is temporarily stored in a VRAM (Video RAM), the image data is read from the VRAM at a predetermined timing, converted into a brightness signal, and output to a display device, or a ROM is directly read based on the array information of the VRAM. There is a method of reading from the device at a predetermined timing, converting it into a luminance signal and outputting it to the display device. In either method, the image data is faithfully transferred to the display device by continuously accessing the next pixel or pixel line. Then, the same image as the original image stored in the ROM is displayed.

[0005]

However, in the conventional image display device, since the same image as the original image stored in the ROM is displayed, only a planar image can be displayed. , ROM to display an image different from the image stored in ROM
It is necessary to store all the image data of the image to be displayed on the display, which requires a large amount of ROM capacity.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an image display device capable of obtaining various visual effects different from the original image with a small amount of image data. And

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is for each predetermined pixel in order at a predetermined timing from a storage means that stores image data in a predetermined order. In an image display device that reads out image data and displays the image on a display device, the display device reads out the image data in a different order from the order in which the image data is read in order to display the same image as the image stored in the storage means. It is characterized by displaying in.

[0008]

In the image display device of the present invention, the image data is stored in the storage means in a predetermined order, and at predetermined timing, in order for each predetermined pixel, that is, every one pixel, every one pixel line or one pixel. The image data is read for each block and displayed on the display device. In this case, by displaying and displaying the image data in an order different from the order in which the image data is read in order to display the same image as the image stored in the storage means, various visual images different from the original image can be displayed. An image having an effect can be displayed. That is, the image data is read out for each predetermined pixel,
The original image can be combined as an image different from the original image, or can be displayed as a curved image with respect to the original image. Therefore, it is possible to display images having various visual effects from one image data representing the original image.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 shows a pachinko machine 10 according to this embodiment.
It is shown. The pachinko machine 10 is provided with a holding frame 12, and a game board 14 is fitted in an upper front position of the holding frame 12. Further, at a lower position on the front surface of the holding frame 12, a supply tray 16 for supplying pachinko balls and a tray 18 for storing the discharged balls are arranged. Further, on the right side of the saucer 18, a launching device 20 for launching a pachinko ball is arranged. The launching device 20 has an operation dial 22,
By rotating the operation dial 22 by a predetermined angle, pachinko balls are continuously fired.

A variable winning device 24 is disposed below the game board 14 and is configured to be intermittently opened only in a predetermined case. A display device 26 is arranged at the center of the game board 14. This display device 2
First specific winning openings 28 are arranged on both sides of 6, respectively. A second specific winning opening 30 is arranged below the display device 26.

FIG. 2 shows an enlarged front view of the display device 26 described above. The movable display device 26 includes a display unit 32 having a color liquid crystal display or the like, a number display unit 34 for counting the number of times the variable winning device 25 is opened, and a first specific prize during the change of the display content of the display unit 32. Mouth 28
And a winning ball display unit 36 for holding and displaying the number of hit balls that have been won in the second specific winning opening 30.

As shown in FIG. 3, the display unit 32 has a built-in driver for displaying a video signal. A VRAM 44 is connected to the interface circuit 50, and the VRAM 44 is connected to the CPU 40 via a data bus 46. Further, the data bus 46 has a ROM 42
Is connected. The CPU 40 uses the address bus 4
8 are connected to the addresses of the ROM 42 and the VRAM 44.

As shown in FIG. 5, the ROM 42 is provided with storage areas having addresses 1 to n (arbitrary natural numbers). In each storage area, pixel data for each pixel line of the original image is read from the upper side of the screen. It is stored in order toward the bottom. The ROM may store pixel data for each pixel or each pixel block.

FIG. 4 shows the ROM 4 in order to display an image in which a stereoscopic visual effect such as a raised screen center is obtained.
Image data for each pixel line is read from VRAM
44 shows a routine stored in 44.

In step S1, an address for each pixel line read from the ROM 42 is calculated. In the present embodiment, since an image in which the stereoscopic visual effect that the center of the screen is raised is obtained is displayed, the same image as the original image stored in the ROM 42 is displayed in the center of the screen. The address of the pixel line is selected, and in the upper and lower parts of the screen, the address is calculated so that the pixel lines selected from the center to the upper part and from the center to the lower part gradually decrease.

In the next step S2, the ROM 4 calculated
The address 2 is accessed, and the read image data is stored in the VRAM 44 in step S3. In the next step S4, it is determined whether or not the last address has been accessed and stored in the VRAM. If the processing up to the last address has been completed, this routine is ended.

FIG. 5 schematically shows a state in which the image data read from the ROM as described above is stored in the VRAM. The image data for each pixel line is roughly read at the portion corresponding to the upper and lower portions of the screen, and is finely read at the portion corresponding to the central portion of the screen.

The image data stored in the VRAM 44 is sent to the display section 32 via the interface circuit 50 to display an image. At this time, the image data for each pixel line has a fine central portion and rough upper and lower portions, so that a stereoscopic visual effect as if the central portion is raised as shown in FIG. 6 is obtained.

In the above description, an example in which the number of pixel lines in the upper and lower parts of the screen is reduced and the image data in the upper and lower parts of the screen is roughly read has been described. If the image data is made fine and the number of pixel lines on the left and right parts of the screen is reduced so that the image data on the left and right parts of the screen is roughly read out, the center part of the screen is raised and the left and right parts of the screen are enlarged as shown in FIG. An image that appears to have moved backward is displayed.

If the image data of the upper and lower portions of the screen and the left and right portions of the screen are reduced from the central portion of the screen in the vertical and horizontal directions of the screen, an image as shown in FIG. 8 can be displayed. .

In the above example, an example of obtaining the address to be accessed by calculation has been described, but as shown in FIG. 9, registers R1 to Rn for designating the start address of the image to be displayed for each pixel line, and the start address are specified. Alternatively, adder / subtractors (or a multiplier is included) A1 to An for adding or subtracting relative values may be provided to determine the access address for each line. In this case, the ROM address itself does not have to be used, and the lowest address of the image to be set may be determined and the lower several bits may be ignored.

As described above, it is possible to display an image in which a stereoscopic visual effect can be obtained by giving a perspective or a curved image based on the data of one original image.

In the above description, the case where one original image is displayed on the screen has been described as an example, but in reality, the function of the image processing LSI is to display a plurality of screens at the same time by combining or displaying them. It is common to have functions (number of screens, sprite function, etc.)
The AM has an area for each sprite and an area for the screen.

Therefore, by providing the above-described display method for each sprite or each screen, one image can be synthesized by giving different stereoscopic effects to each area or character in the display screen, thereby realizing a real three-dimensional image. It is possible to display an image close to.

Further, for a moving image, a complicated shape can be three-dimensionally imaged by changing the value of the access register for each line according to the movement, as compared with the above embodiment. FIG. 10 shows a state in which the image display device of the above-described embodiment is provided for each sprite and images are combined. In sprites SP1 and SP3, image data of pixel lines in the upper and lower portions of the screen are compared with those in the central portion of the screen. In the sprite SP2, the image data of the pixel lines in the left-right direction is roughly selected as compared with the central portion of the screen. Although the access for each horizontal dot differs depending on the data format, for example, in the case of 16-color display, 8 dots are displayed.
Information of 2 pixels is stored, where 4 bits are 1 pixel in each bit. In that case, in the case of 256 color display in which access is supported in units of 2 pixels, it is possible to access in units of 1 pixel per 8 bits. is there.

The control unit for controlling the display unit is not limited to the one shown in FIG. 3, but as shown in FIG.
It may be provided with C55. In this case, VRA
M44 may be incorporated in the image processing IC 55.

In the above description, the data for reading the image data is described for each pixel line, but the image data may be read for each pixel or each pixel block. Further, in the above, the example in which the read image data is stored in the VRAM and the image is displayed has been described. However, the array information for reading the image data is stored in the VRAM, and the predetermined information is directly read from the ROM based on the array information. It can also be applied to a method of reading image data at a timing, converting the image data into a luminance signal, and outputting the luminance signal to a display device.

[0028]

As described above, according to the present invention, 1
Since only the necessary image data is read out from the image data of the three original images and displayed, the images with a three-dimensional visual effect can be created by giving the original image a perspective or a curved image. The effect that it can be displayed is obtained.

[Brief description of drawings]

FIG. 1 is a front view of a pachinko machine.

FIG. 2 is an enlarged view of a display unit.

FIG. 3 is a block diagram of a control unit that controls a display unit.

FIG. 4 is a flowchart showing an image reading routine by a CPU.

FIG. 5: Image data stored in ROM, V selected
It is a block diagram which shows typically the image data memorize | stored in RAM and the data displayed on the display screen.

FIG. 6 is a diagram showing a state in which vertical pixel lines are roughly read out from image data of an original image.

FIG. 7 is a schematic diagram showing a state in which pixel lines in the left-right direction are roughly read.

FIG. 8 is a schematic diagram showing a state in which pixel lines in a vertical direction and a horizontal direction are roughly read.

FIG. 9 is a block diagram when an address is set by a register.

FIG. 10 is a diagram showing a state in which a plurality of sprites are displayed and combined on one screen.

FIG. 11 is a block diagram showing another example of a control unit that controls the display unit.

[Explanation of symbols]

 44 VRAM 46 data bus 50 interface circuit

Claims (1)

[Claims] 1. An image display device for displaying image on a display device by reading out image data for each predetermined pixel in order from a storage means storing image data in a predetermined order at a predetermined timing. An image display device, wherein image data is read and displayed in an order different from the order in which the image data is read in order to display the same image as the stored image.