JPH1020842A - Display controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the number of simultaneous display colors without increasing capacity of a lookup table(LUT) by generating plural kinds of color codes for an optional display position and displaying the number of colors more than the number of colors provided by the number of bits of the color code based on the LUT. SOLUTION: An LUT device 11 is provided with three LUTs 11a-11c for converting first-third sprite image information (color codes) to the RGB data. When the first-third sprite image information are inputted to the corresponding LUTs in a composite display mode, the LUTs 11a-11c select respectively the RGB data of six bits corresponding to the inputted color codes. Respective selected data are combined by a composition circuit 12, and the RGB data of total 18 bits are outputted. The number of bits of the color code are four bits, and the data outputted from respective LUTs 11a-11c become 16 kinds, and these three are combined, and 4096 colors among 260 thousand colors are displayed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device capable of increasing the number of simultaneous display colors and obtaining an image close to a natural color.

[0002]

2. Description of the Related Art As a pachinko machine, a liquid crystal display (LC) is used.
D) and the like, and there is a model in which an image corresponding to hit information or the like is displayed on the display. In such display systems, a video display processor (VDP) is generally provided. VDP is CG-RO
Image information such as a background image (pattern graphic image) and a character image (sprite image) is extracted from M and an image is displayed on the LCD.

Image information such as a pattern graphic image and a sprite image is represented by a CG-RO in the form of a color code.
M, stored in lookup table (LUT)
Is converted to RGB data based on FIG. 5 shows a memory map of the lookup table. In FIG. 5, a color code corresponds to an address. When the color code is input to the look-up table, a total of 18 bits of RGB corresponding to 6 bits of RGB corresponding to the address are input.
B data is output.

[0004] With a total of 18 bits of RGB data consisting of 6 bits each of RGB, 260,000 colors can be represented.
However, when the color code is 4 bits, only 16 colors out of 260,000 colors can be displayed simultaneously.

[0005]

In order to obtain an image closer to a natural image, it is necessary to increase the number of colors that can be displayed simultaneously. However, as described above, in the case of an LUT in which the color code is 4 bits and the R, G, and B data are each 6 bits, only 16 out of 260,000 colors can be displayed simultaneously. To increase the number of simultaneous display colors, it is conceivable to increase the number of bits of the color code. For example, if the color code is set to 12 bits, 4096 colors out of 260,000 colors can be displayed simultaneously.

However, when the number of bits of the color code is increased, there is a problem that the capacity of the CG-ROM and the capacity of the LUT increase. For example, when the color code is increased from 4 bits to 12 bits, as shown in FIG. 12, the capacity of the LUT increases from 36 bytes to 9K bytes.

An object of the present invention is to provide a display control device capable of increasing the number of simultaneous display colors and obtaining an image close to a natural color.

According to the present invention, in a display system in which a color code is converted into RGB data by an LUT and output, the number of simultaneously displayed colors can be increased without increasing the capacity of the LUT, and an image close to a natural color can be obtained. It is an object to provide a display control device that can be obtained.

[0009]

According to a first aspect of the present invention, there is provided a first display control device for generating a plurality of types of color codes having the same number of bits for an arbitrary display position. A means for converting color data corresponding to the color code based on the up-table; and a means for generating color data for the display position by combining a plurality of obtained color data. It is characterized in that it is possible to display more colors than the number of colors defined by the number of bits. The plurality of types of color codes are, for example, color codes for different sprite images.

A second display control device according to the present invention includes means for generating a plurality of types of color codes each having the same number of bits for an arbitrary display position, and generating the generated color codes based on a look-up table. Means for converting to RGB data corresponding to the color code, and means for combining the plurality of obtained RGB data to generate color data for the display position,
Thereby, a color having a larger number of colors than the number of colors defined by the number of bits of the color code can be displayed. The plurality of types of color codes are, for example, color codes for different sprite images.

A third display control device according to the present invention is a means for generating first, second, and third color codes each having the same number of bits for an arbitrary display position;
Means for respectively generating R data corresponding to the first color code, G data corresponding to the second color code, and B data corresponding to the third color code based on a look-up table; Means for generating color data for the display position by combining the data, the G data and the B data,
It is characterized in that it is possible to display more colors than the number of colors defined by the number of bits of the color code.
The first, second, and third color codes are, for example, color codes for different sprite images.

According to the first, second or third display control device of the present invention, the number of simultaneous display colors can be increased without increasing the capacity of the look-up table, and an image close to natural colors can be obtained. can get.

A fourth display control device according to the present invention generates a plurality of types of color data for an arbitrary display position, and generates color data for the display position by combining the generated plurality of color data. It is characterized by having means for performing. The plurality of types of color data are, for example, color data for different sprite images.

According to the fourth display control device of the present invention, the number of simultaneously displayed colors can be increased, and an image close to a natural color can be obtained.

[0015]

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.

FIG. 1 shows the configuration of a display system of a pachinko machine.

This display system comprises a CPU 1, a CPU interface 2, a synchronization signal generator 3, a CG-ROM
4, a CG-ROM interface 5, a pattern graphic image generator 7 having a pattern graphic memory 6, a sprite image generator 9 having a sprite memory 8, a color bus controller 10, a look-up table device 11, a synthesizing circuit 12, an LCD controller 13 and an LCD 14.

[0018] Winning information and payout information are sent to the CPU 1 from a pachinko machine control unit which manages the state of the pachinko machine. The CPU 1 outputs a control signal and control data for outputting a predetermined display image according to the information sent from the pachinko machine control unit. The control signal and control data output from the CPU 1 are sent to each section of the display system via the CPU interface 2.

The synchronizing signal generator 3 outputs a timing signal synchronized with the image signal according to the display parameters obtained from the CPU 1. This timing signal is supplied to the pattern graphic image generator 7, the sprite image generator 9, the color bus controller 10, the look-up table device 11, and the LCD controller 13.

As shown in FIG. 2, the CG-ROM 4 stores a plurality of pattern graphic image information P0 to Pn and a plurality of sprite image information S0 to Sm. Each pattern graphic image information P0 to Pn is
As shown by E1 to Ek in FIG. 3, this is information for generating an image having a size that is a predetermined number smaller than the size of the display screen. Therefore, a pattern graphic image for one screen is generated by the plurality of pieces of pattern graphic image 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. Each of the sprite image information S0 to Sm also includes a required number of picture element information (color codes).

As shown in FIG. 3, the pattern graphic memory 6 of the pattern graphic image generator 7 stores
CG storing pattern graphic control data sent from PU1, that is, image information of pattern graphics to be displayed in screen areas E1 to Ek, respectively
-The address (read address) of the ROM 4 is stored.

The pattern graphic image generating section 7 performs pattern graphic image information (picture element information) based on the control data stored in the pattern graphic memory 6.
Through the CG-ROM interface 5
Captured from M4 and output to color bus.

The sprite memory 8 of the sprite image generator 9 stores sprite image control data for each sprite surface sent from the CPU 1, that is, sprite image information to be displayed for each sprite surface.
The address (read address) of the G-ROM 4 and the like are stored.

The sprite image generating section 9 generates sprite image information (picture element information) corresponding to each sprite surface on the basis of the control data stored in the sprite memory 8.
-Import from the CG-ROM 4 via the ROM interface 5.

In this embodiment, there are a normal display mode and a composite display mode as display modes for displaying a sprite image. In the normal display mode, C
The sprite image information for each sprite surface fetched from the G-ROM 4 is sent to a sprite image selection circuit (not shown) provided in the sprite image generator 9.

The sprite image selection circuit selects predetermined sprite image information for each display position based on the display priority of each sprite surface. That is, at a display position where only sprite image information corresponding to one sprite surface is input, the sprite image information is output as it is. At a display position where sprite image information for a plurality of sprite surfaces is simultaneously input, sprite image information for the sprite surface having the highest display priority among the sprite surfaces is selected and output. The sprite image information output from the sprite image selection circuit is sent to the color bus together with the coordinate data indicating the display position.

In the composite display mode, in this example, the sprite image is composed of three types of sprite image information: first sprite image information, second sprite image information, and third sprite image information. . In the combined display mode, all three types of sprite image information taken in from the CG-ROM 4 are sent to the color bus together with coordinate data indicating the display position.

The pattern graphic image information and sprite image information output to the color bus are sent to the color bus control unit 10. The color bus control unit 10 outputs the input information to a display position where only one of the sprite image information and the pattern graphic image information is input. For a display position where both sprite image information and pattern graphic image information are input, sprite image information is selected and output.

The information (color code) output from the color bus controller 10 is sent to the look-up table device 11. In this example, as shown in FIG.
And the third sprite image information (color code)
Three lookup tables 11a (LUT1), 11b (LUT2), 11c for converting into GB data
(LUT3) is provided. The contents of the lookup tables 11a, 11b, 11c are the same.

The color code representing the pattern graphic image information is input to the look-up table 11a. In the normal display mode, the color code representing the sprite image information for each sprite surface is
The data is input to the look-up table 11a.

In the composite display mode, the first and second
And the color code representing the third sprite image information is stored in the corresponding lookup table 11a, 11b, 1
1c. Here, the color code indicating the first sprite image information is input to the first look-up table 11a, the color code indicating the second sprite image information is input to the second look-up table 11b, and the third sprite image information is input. Is input to the third lookup table 11c.

FIG. 5 shows the contents of the lookup table 11a. The color code corresponds to the address. Each address stores 6-bit R data, G data, and B data. When a color code representing pattern graphic image information is input to the look-up table 11a, a total of 18 bits of RGB data consisting of 6 bits of RGB corresponding to the color code are output.
The output RGB data is sent to the LCD 14 without any processing being performed by the synthesizing circuit 12.

In the normal display mode, when a color code representing sprite image information is input to the lookup table 11a, a total of 18 bits of RGB data consisting of 6 bits of RGB corresponding to the color code are output. The output RGB data is sent to the LCD 14 without any processing being performed by the synthesizing circuit 12.

The case where the first, second and third sprite image information are input to the corresponding lookup tables 11a, 11b and 11c in the combined display mode will be described. The first lookup table 11a is
6-bit R data corresponding to the input color code is selected. The second lookup table 11b selects 6-bit G data corresponding to the input color code. The third lookup table 11c selects 6-bit B data corresponding to the input color code.

Each of the lookup tables 11a, 11b,
The data selected by 11c are combined by the synthesizing circuit 12, and the synthesizing circuit 12 outputs a total of 18 bits of RGB data of 6 bits each for RGB. Since the number of bits of the color code is 4 bits, the number of types of data output from the look-up tables 11a, 11b, 11c is 16 types. Since each of the 16 types of data is combined with three, 4096 out of 260,000 colors
(= 16 × 16 × 16) colors can be displayed simultaneously.

FIGS. 6 and 7 show a modification of the look-up table device.

As shown in FIG. 6, the look-up table device 111 includes three look-up tables 111a (LUT1) for converting the first, second, and third sprite image information (color codes) into RGB data. , 1
11b (LUT2) and 111c (LUT3) are provided. Each lookup table 111a, 111b,
The contents of 111c are the same.

FIG. 7 shows the contents of the lookup table 111a. The color code corresponds to the address. Each address stores 2-bit R data, G data, and B data.

The case where the first, second, and third sprite image information is input to the corresponding look-up tables 111a, 111b, 111c in the composite display mode will be described. Each lookup table 111
From a, 111b, and 111c, RGB 2-bit RGB data corresponding to the input color code is output.

The R, G, and B data output from the first lookup table 111a are defined as R1, G1, and B1 data, and the R, G, and B data output from the second lookup table 111b are defined as R2, G2, and B2. Data and the third
R, G, output from the lookup table 111c,
The B data is R3, G3, and B3 data. The data output from each of the lookup tables 111a, 111b, 111c is sent to the synthesis circuit 12.

In the synthesizing circuit 12, 6-bit R data (R1R2R3) is generated from the 2-bit R data (R1, R2, R3) output from each of the look-up tables 111a, 111b, 111c. 6-bit G data (G1G2G3) is generated from the 2-bit G data (G1, G2, G3) output from 111a, 111b, 111c, and the 2-bit G data (G1G2G3) output from each look-up table 111a, 111b, 111c. 6-bit B data (B1B2B3) is generated by the B data (B1, B2, B3),
A total of 18 bits of RGB data of 6 bits each for GB are generated.

Since the number of bits of the color code is 4 bits, each of the lookup tables 111a, 111b, 1
The number of types of each data output from 11c is 16 types. Since three sets of 16 types of data are combined, 4096 (= 16 × 16 × 16) colors out of 260,000 colors can be simultaneously displayed.

FIGS. 8 and 9 show a modification of the look-up table device.

As shown in FIG. 8, the look-up table device 211 has three look-up tables 211a (LUT1) and 211b (LUT1) corresponding to the first, second, and third sprite image information (color codes). LUT
2), 211c (LUT3) are provided.

FIG. 9 shows each look-up table 211.
a, 211b, and 211c are shown. The color code corresponds to the address. Each address of the first lookup table 211a stores 6-bit R data. Each address of the second lookup table 211b stores 6-bit G data. Each address of the third lookup table 211c stores 6-bit B data.

The case where the first, second, and third sprite image information is input to the corresponding look-up tables 211a, 211b, 211c in the combined display mode will be described.

From the first lookup table 211a, 6-bit R data corresponding to the input color code is output. Second lookup table 211b
Output 6-bit G data corresponding to the input color code. Third look-up table 21
From 1c, 6-bit B data corresponding to the input color code is output. Each lookup table 2
The data output from 11a, 211b, 211c is
The signal is sent to the synthesis circuit 12.

In the synthesizing circuit 12, the 6-bit R data output from the first look-up table 211a,
By combining the 6-bit G data output from the lookup table 211b and the 6-bit B data output from the third lookup table 211c, a total of 18-bit RGB data of 6 bits each for RGB is generated. .

Since the number of bits of the color code is 4 bits, each of the look-up tables 211a, 211b, 2
The number of types of R data, G data and B data output from 11c is 16 respectively. Since each of the 16 types of data is combined with three, four out of 260,000 colors
096 (= 16 × 16 × 16) colors can be displayed simultaneously.

When a look-up table device as shown in FIGS. 8 and 9 is used, color codes representing pattern graphic image information are input to three look-up tables 211a, 211b and 211c, respectively. And three lookup tables 211
a, 211b, and 211c, data corresponding to the input color code is read out, and
Sent to 2. The synthesizing circuit 12 synthesizes the three pieces of transmitted data to generate a total of 18 bits of R of 6 bits each for RGB.
GB data is generated.

Similarly, a color code representing sprite image information in the normal display mode is also input to each of the three lookup tables 211a, 211b, and 211c. Is generated.

The lookup table device 1
1 and 111 are composed of a plurality of look-up tables. As shown in FIG. 10, a time-series conversion circuit 21 is provided in a stage preceding the look-up table devices 11 and 111. 111
By providing the time-series inverse conversion circuit 22 at the subsequent stage, the look-up table devices 11 and 111 can be constituted by a single look-up table 11a and 111a.

As shown in FIG. 11, the time series conversion circuit 21 converts the first, second, and third sprite image information SC1i, SC2i, and SC3i sent simultaneously.
Time-series compressed data ASC1i, ASC2i and ASC
3i is converted into serial data.

The time-series compressed data ASC1i, ASC2i and ASC3i obtained in this way are sequentially input to one look-up table (for example, look-up table 11a shown in FIG. 5 or look-up table 111a shown in FIG. 7). Is done. When the look-up table device includes only the look-up table 11a shown in FIG. 5, the R data corresponding to the color code is read out from the time-series compressed data ASC1i, and the time-series compressed data ASC2i is read. , The G data corresponding to the color code is read, and the time-series compressed data ASC3i is read B data corresponding to the color code.

In the time-series inverse conversion circuit 22, the R-series for each of the time-series compressed data ASC1i, ASC2i and ASC3i
The data, G data and B data are respectively decompressed and converted into parallel data.

When the look-up table device comprises only the look-up table 111a shown in FIG. 7, each of the time-series compressed data ASC1i, ASC2i, A
For SC3i, RGB corresponding to the color code
Data is read respectively.

The time-series inverse conversion circuit 22 converts the time-series compressed data ASC1i, ASC2i and ASC3i into R
The GB data is respectively decompressed and converted into parallel data.

In the above embodiment, the sprite image is always composed of three types of sprite image information in the composite display mode, but one of the three types of sprite image information or The present invention can be applied to a case where a sprite image composed of two exists. In such a case, two or three
The combining process may be performed only on a sprite image composed of various types of sprite image information.
In general, the combining process may be performed only on a portion where sprite images of a plurality of sprite surfaces overlap.

In the above embodiment, the CG-ROM
4 shows an example in which a color code is stored.
-Even when the RGB data is stored in the ROM 4,
The present invention can be applied. In this case, LU
Instead of passing through T, a plurality of sprite image information may be sent to the synthesizing circuit to synthesize the sprite image information.

[0061]

According to the present invention, the number of simultaneously displayed colors can be increased, and an image close to a natural color can be obtained.

According to the present invention, the color code is
CG-ROM for storing color codes in a display system that converts the data into RGB data and outputs the data
The number of simultaneous display colors can be increased without increasing the storage device and the capacity of the LUT, and an image close to a natural color can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a display system of a pachinko machine.

FIG. 2 is a schematic diagram showing the contents of a CG-ROM.

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

FIG. 4 is a block diagram showing a configuration of a lookup table device 11;

FIG. 5 is a schematic diagram showing contents of a look-up table 11a in FIG. 4;

FIG. 6 is a block diagram showing another example of the look-up table device.

FIG. 7 is a schematic diagram showing contents of a look-up table 111a of FIG. 6;

FIG. 8 is a block diagram showing still another example of the look-up table device.

FIG. 9 shows lookup tables 211a and 21 shown in FIG. 8;
It is a schematic diagram which shows the content of 1b, 211c.

FIG. 10 shows the look-up table devices 11, 111.
Is a block diagram showing a part of the configuration of the display system when is configured with a single look-up table 11a, 111a.

11 is a time chart for explaining the operation of the time series conversion circuit 21 of FIG.

FIG. 12 is a diagram for explaining that the capacity of the look-up table increases when the number of bits of the color code is increased, and is a schematic diagram showing the contents of the look-up table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 3 Synchronization signal generation part 4 CG-ROM 7 Pattern graphic image generation part 9 Sprite image generation part 10 Color bus control part 11 Look-up table device 12 Synthesis circuit 14 LCD

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication H04N 9/64 G06F 15/66 310 (72) Inventor Yutaka Uehara 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Kiyoji Matsumoto 2-5-5 Sanyo Electric Co., Ltd. (72) Inventor Hiroyuki Miyake Keihanhondori, Moriguchi-shi, Osaka 2-chome 2-5-5 Sanyo Electric Co., Ltd.

Claims (7)

[Claims] 1. A means for generating a plurality of types of color codes each having the same number of bits for an arbitrary display position, converting each generated color code into color data corresponding to the color code based on a look-up table. Means for converting, and means for combining the plurality of obtained color data to generate color data for the display position, whereby a color having a larger number of colors than the number of colors defined by the number of bits of the color code is provided. A display control device that enables display. 2. A means for generating a plurality of types of color codes each having the same number of bits for an arbitrary display position. Each generated color code is converted into RGB data corresponding to the color code based on a look-up table. Means for converting, and means for combining the plurality of obtained RGB data to generate color data for the display position, whereby the number of colors larger than the number of colors defined by the number of bits of the color code is provided. A display control device that enables display. 3. The color code of a plurality of types of color codes for sprite images different from each other.
3. The display control device according to any one of claims 2 and 3. 4. A means for generating first, second and third color codes each having the same number of bits for an arbitrary display position, R data corresponding to the first color code, and a second color code Means for respectively generating G data corresponding to the third color code and B data corresponding to the third color code based on the look-up table, and combining the generated R data, G data and B data, A display control device, comprising: means for generating data, whereby the display device can display more colors than the number of colors defined by the number of bits of the color code. 5. The display control device according to claim 4, wherein the first, second, and third color codes are color codes for different sprite images. 6. A display control comprising: means for generating a plurality of types of color data for an arbitrary display position; and means for combining the plurality of generated color data to generate color data for the display position. apparatus. 7. The color data of a plurality of types of color data for sprite images different from each other.
3. The display control device according to 1.