JPH09258708A - Dissolving display control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce processing load by generating an intermediate image plane image corresponding to a display ratio corresponding to a control pattern, on the basis of the picture element data of a first image plane image, the picture element data of a second image plane image, and the control pattern. SOLUTION: A pattern graphic image generating part 5 takes in pattern graphic image information (picture element information) from a CG-ROM 3 on the basis of control data stored in an image plane data memory 4, and feeds it to a look-up table 6. At the time of forming an intermediate image plane image to display it, a basic pattern for dissolving control is stored in an RAM 51. As the basic pattern, a plurality of basic patterns with different display ratios between a first image plane image and a second image plane image are previously prepared. The first image plane image and second image plane image are read from the CG-ROM 3 by the pattern graphic image generating part 5, and either the first image plane image or the second image plane image is selected according to the basic pattern and outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display ratio of a first screen image and a second screen image while the display content is switched from a first screen image to a second screen image. The present invention relates to a dissolve display control device that realizes a dissolve function of displaying a plurality of intermediate screen images that gradually change from one having a large number of second screen images to one having a large second screen image display ratio.

[0002]

2. Description of the Related Art Conventionally, when a dissolve function is realized, each pixel data of an intermediate screen image displayed before shifting from a first screen image to a second screen image is calculated as follows. There is. That is, the density of an arbitrary pixel to be calculated is C, the density of the pixel of the first screen image is a,
Assuming that the density of the pixel of the screen image is b and the appearance ratio of the first screen image and the second screen image is m: n, the density C of an arbitrary pixel to be calculated is calculated based on Equation 1 below. It

[0003]

[Expression 1] C = (m · a + n · b) / (m + n)

[0004]

Conventionally, when realizing the dissolve function, in order to generate an intermediate screen image that is displayed before the transition from the first screen image to the second screen image, each pixel is generated. In addition, there is a problem that the processing load is large because the above-mentioned calculation must be performed.

An object of the present invention is to provide a dissolve display control device which can reduce the processing load.

[0006]

In the dissolve display control device according to the present invention, the display ratio of the first screen image and the second screen image is changed while the display contents are switched from the first screen image to the second screen image. In a dissolve display control device for displaying a plurality of gradually changing intermediate screen images from one with a large first screen image display ratio to one with a large second screen image display ratio, For each pixel position, the pixel data of the first screen image and the second
A first pattern for generating a plurality of control patterns, which is a control pattern including control data indicating which one of the pixel data of the screen image is selected, and which has different patterns according to a plurality of display ratios, and a first It is characterized by comprising second means for respectively generating an intermediate screen image according to a display ratio corresponding to the control pattern, based on the pixel data of the screen image, the pixel data of the second screen image and each control pattern. .

As each control pattern, one having a size of 1 / N (N is an integer) of one screen is used. When N is 2 or more, that is, 1/2 or less of the size of one screen is used as the size of each control pattern, each intermediate screen image has a display ratio of the intermediate screen image. It is generated by applying the control pattern corresponding to N times to the entire area of one screen.

The first means is, for example, a control pattern storage table that is referred to when each intermediate screen image is generated, and an external ROM that stores a plurality of control patterns created in advance for each of a plurality of types of display ratios. And the like, and means for reading the control pattern corresponding to the intermediate screen image to be generated from the storage means and storing it in the control pattern storage table. Storage of the control pattern in the control pattern storage table is performed, for example, in the vertical blanking period.

As the first means, for example, a control pattern storage table referred to when each intermediate screen image is generated, and a control pattern corresponding to the intermediate screen image to be generated are generated and controlled. A device having a control unit such as a CPU for storing in the pattern storage table is used. Storage of the control pattern in the control pattern storage table is performed, for example, in the vertical blanking period.

Further, switching of each intermediate screen image is performed at intervals of an integral multiple of the vertical display period.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a display system of a pachinko machine will be described below with reference to the drawings.

As a pachinko machine, there is a model equipped with a display device such as a liquid crystal display device and an image corresponding to the hit information is displayed on the display device. In such a display system, a background image (pattern graphic image) and a character image (sprite image) are displayed. Hereinafter, an embodiment in which a background image has a dissolve function will be described.

FIG. 1 shows a structure of a portion (hereinafter referred to as a background image display system) necessary for displaying a background image in a display system of a pachinko machine.

The background image display system comprises a CPU 1, a timing signal generator 2, a CG-ROM 3, a pattern graphic image generator 5 having a screen data memory 4, a look-up table 6, a D / A converter 7 and a display device 8.
It has. In the pattern graphic image generating unit 5, a RAM 51 (control pattern storage table) used when executing a dissolve function described later is provided.

The CPU 1 outputs a control signal and control data for outputting a predetermined pattern graphic image.

The timing signal generator 2 outputs a timing signal synchronized with the image signal according to the display parameter obtained from the CPU 1. This timing signal is supplied to the pattern graphic image generator 5, the D / A converter 7, and the display device 8.

As shown in FIG. 2, a plurality of pattern graphic image information P0 to Pn are stored in the CG-ROM 3. Each pattern graphic image information P0
3 to Pn are information for generating an image having a size that is a predetermined fraction of the size of the display screen, as indicated by E1 to Em in FIG. Therefore, the pattern graphic information for one screen is generated by the plurality of pattern graphic information.

Each pattern graphic image information P0-P
n is composed of a required number of picture element information (color codes) C0 to Ci. Each of the picture element information C0 to Ci in FIG. 2 corresponds to the R, G, B signals in parentheses.

In the screen data memory 4 of the pattern graphic image generator 5, as shown in FIG. 3, the pattern graphic control data sent from the CPU 1, that is, the pattern graphics to be displayed in each of the screen areas E1 to Em is displayed. CG-ROM storing image information
The address (read address) of 103 is stored.

The pattern graphic image generator 5 is based on the control data stored in the screen data memory 4,
The pattern graphic image information (picture element information) is
Import from ROM3. Each pattern graphic image information fetched by the pattern graphic image generating section 5 is sent to the look-up table 6 via the color bus.

The look-up table 6 converts the sent information (picture element information: color code) into a corresponding video signal (RGB data). Lookup table 6
The RGB data obtained by the above is sent to the display device 8 via the D / A converter 7. The display device 8 displays a pattern graphic image based on the RGB data sent from the D / A converter 7 and the timing signal from the timing signal generator 2.

In this background image display system, the display content is switched from the first pattern graphic screen image (hereinafter referred to as the first image) to the second pattern graphic screen image (hereinafter referred to as the second screen image). The display ratio between the first screen image and the second screen image gradually changes from a large display ratio of the first screen image to a large display ratio of the second screen image. It has a dissolve display function for displaying (hereinafter referred to as an intermediate screen image). When generating and displaying the intermediate screen image, a basic pattern for dissolve control described later is stored in the RAM 51. Then, the pattern graphic image generator 5 causes the CG-ROM
The first screen image and the second screen image are read from 3, and either the first screen image or the second screen image is selected and output for each pixel according to the basic pattern.

The details of the processing executed by the pattern graphic image generating section 5 when the dissolve function is realized will be described below.

FIG. 4 shows an example of a basic pattern for dissolve control.

In this example, the basic pattern for dissolve control consists of data of 8 pixels × 8 pixels smaller than one screen size. That is, the basic pattern has 8-bit data D0 to D7 for eight tables # 0 to # 7.

Such a basic pattern is applied to each area obtained by dividing one screen by the size of the basic pattern, as shown in FIG. The size of one screen is 51
With 2 pixels × 512 pixels, a total of 4096 basic patterns, 64 in each of the horizontal and vertical directions, are applied to one screen.

Each bit D of the 8-bit data of the basic pattern
0 to D7 indicate control data for one color code. When the control data is "0", the color code of the first screen image is selected, and when the control data is "1",
This means selecting the color code of the second screen image.

Such a basic pattern is created in advance for each intermediate screen image displayed from the time the first screen image is displayed until the time the second screen image is displayed. That is, a plurality of basic patterns with different display ratios of the first screen image and the second screen image are created in advance. Specifically, a plurality of basic patterns having different ratios of the number of "1" to the number of "0" are created in advance so that the ratio of the number of "1" to the number of "0" gradually increases. There is. Each type of basic pattern created in advance is stored in an external ROM (not shown), and the basic pattern is transferred to the RAM 51 in the pattern graphic image generating unit 5 when the dissolve function is realized. The transfer of each type of basic pattern to the RAM 51 is performed during the vertical blanking period.

When the dissolve function is realized, the CPU 1 generates basic patterns of each type and the RAM 51
May be stored. The storage of each type of basic pattern in the RAM 51 is performed during the vertical blanking period.

Further, the switching of the basic pattern is performed every period which is an integral multiple of the vertical scanning period. That is, the switching of each intermediate screen image is performed for each one or plural fields.

FIG. 6 shows how to read the basic pattern.

If the size of one screen is 512 pixels × 512 pixels, the number of lines in one screen is 5 from LINE1 to LINE512.
Twelve. Since 64 basic patterns are arranged in the horizontal direction of one screen, the data of the basic pattern table # 0 is repeatedly read 64 times for LINE1. Similarly, for LINE2, the data of the table # 1 of the basic pattern is repeatedly read 64 times. Similarly, for LINE8, the data of the basic pattern table # 7 is repeatedly read 64 times.

Since the data of the last table # 7 of the basic pattern is read for LINE8, the data of the first table # 0 of the basic pattern is 64 for LINE9.
It is read repeatedly. Such an operation is repeated. So for the last LINE512
The data of the basic pattern table # 7 is repeatedly read 64 times.

The processing performed by the pattern graphic image generating unit 5 when the dissolve function is realized will be described with reference to FIG.

One clock of CLK corresponds to one color code. Ai (i = 0, 1, 2, ...) is CG-RO
The color code for the first screen image read from M3 is shown. Bi (i = 0, 1, 2, ...) is a CG
A color code for the second screen image read from the ROM 3 is shown. The dissolve control signal is a signal generated based on the basic pattern data read out for each pixel of one screen. If the read basic pattern data is "1", it becomes H level and is read out. If the basic pattern data is "0", it becomes L level.

For the pixel position i where the dissolve control signal is at H level, the color code Bi for the second screen image is displayed.
Is selected and the dissolve control signal is at the L level for the pixel position i, the color code A for the first screen image is displayed.
i is selected. Therefore, the basic pattern data is "
The color code Bi for the second screen image is displayed at the pixel position i of 1 ", and the color code Ai for the first screen image is displayed at the pixel position i of the basic pattern data of" 0 ".
Is displayed.

For the pixel position i of which the dissolve control signal is at the H level, the color code Ai for the first screen image is changed to a color code representing a transparent color, and the dissolve control signal is changed to the pixel position i of the L level. On the other hand, the color code Bi for the second screen image may be changed to a color code representing a transparent color.

According to the above embodiment, the display ratio of the first screen image and the second screen image is the display ratio of the first screen image while the display content is switched from the first screen image to the second screen image. A plurality of intermediate screen images that gradually change are displayed from those having a large number of second screen images to those having a large second screen image display ratio. That is, the dissolve function is realized. Moreover, unlike the conventional case, it is not necessary to calculate the density for each pixel in order to generate the intermediate screen image displayed before the transition from the first screen image to the second screen image, so the processing load is light. Become.

[0039]

According to the present invention, a dissolve display control device capable of reducing the processing load is realized.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of a background image display system.

FIG. 2 is a schematic diagram showing pattern graphic image information stored in a CG-ROM.

FIG. 3 is a schematic diagram showing each pattern graphic control data stored in a screen data memory and a screen area corresponding to the control data.

FIG. 4 is a schematic diagram showing an example of a basic pattern.

FIG. 5 is a schematic diagram showing that the same basic pattern is applied multiple times to one screen when the basic pattern is smaller than the size of one screen.

FIG. 6 is a schematic diagram showing a method of reading a basic pattern.

FIG. 7 is a time chart for explaining a process performed by the pattern graphic image generating unit 5 when realizing the dissolve function.

[Explanation of symbols]

 1 CPU 2 Timing signal generator 3 CG-ROM 4 Screen data memory 5 Pattern graphic image generator 6 Look-up table 7 D / A converter 8 Display device 51 RAM

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kyoya Nonomura 2-5-5-1 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Inventor Kiyoji Matsumoto 2-chome, Keihanhondori, Moriguchi-shi, Osaka 5-5 Sanyo Electric Co., Ltd. (72) Inventor Hiroyuki Miyake 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A display ratio between the first screen image and the second screen image is changed from the display ratio of the first screen image to the second screen image while the display content is switched from the first screen image to the second screen image. In a dissolve display control device for displaying a plurality of intermediate screen images that gradually change while displaying a large number of screen images, a first display is performed for each pixel position in a screen area of a predetermined size.
A control pattern including control data indicating which of pixel data of a screen image and pixel data of a second screen image is selected, and a plurality of control patterns having different patterns depending on display ratios of a plurality of types are generated. And a second means for generating an intermediate screen image according to a display ratio corresponding to the control pattern, based on the first screen image pixel data, the second screen image pixel data, and each control pattern. A dissolve display control device comprising: 2. The size of each control pattern is 1 / N of the size of one screen (where N is an integer), and each intermediate screen image corresponds to the display ratio of the intermediate screen image. The dissolve display control device according to claim 1, wherein the dissolve display control device is generated by applying the control pattern N times to the entire area of one screen. 3. A first means is a control pattern storage table referred to when each intermediate screen image is generated, a storage means for storing a plurality of control patterns created in advance for each of a plurality of types of display ratios, and 3. The dissolve display control device according to claim 1, further comprising: a unit that reads a control pattern corresponding to an intermediate screen image to be generated from a storage unit and stores the control pattern in a control pattern storage table. 4. The first means generates a control pattern storage table referenced when each intermediate screen image is generated, and a control pattern corresponding to the intermediate screen image to be generated, and the control pattern storage table is generated. 3. The dissolve display control device according to claim 1, further comprising: 5. The dissolve display control device according to claim 3, wherein the control pattern storage table stores the control pattern during a vertical blanking period. 6. The dissolve display control device according to claim 1, wherein switching of each intermediate screen image is performed at intervals of an integral multiple of a vertical display period.