JP5441237B2 - Game machine and program - Google Patents

Description

  The present invention relates to a gaming machine provided with an image display means having a display screen and a program executed in a computer installed in such a gaming machine, and more specifically, a scene around the gaming machine is reflected on the display screen. The present invention relates to a gaming machine and a program that can prevent the game.

  2. Description of the Related Art Conventionally, as a gaming machine installed in a game store such as a pachinko store or a pachislot store, there is a revolving type gaming machine (pachislot machine) provided with an image display device such as an LCD for displaying an image (see, for example, Patent Document 1). In this spinning machine, for the purpose of raising the player's expectation and the like, an effect video for notifying the result of the lottery such as “winning” or “losing” is displayed on the image display device. .

  By the way, in this type of spinning machine, in order to achieve a predetermined effect, a dark image in which the entire display screen is temporarily black-colored at a predetermined timing such as scene switching in the effect video is displayed. A blackout process to be displayed may be executed.

  FIG. 7 shows a case where the result of the lottery such as the BB role is a win in the conventional spinning type gaming machine, or the case where the execution of the notification effect for notifying the result of the above lottery is determined. It is explanatory drawing which shows the illustrative aspect of the effect animation displayed on an image display apparatus when a predetermined condition is satisfied.

  As shown in the drawing, in this effect animation, after displaying a scene where two characters fight in the mode shown in FIG. As shown in FIG. 7C, an ending in which one character wins the battle is displayed. The result of the above-mentioned lottery lottery is announced to the player. The dark image scene shown in FIG. 7B is displayed at a timing immediately before the ending is displayed.

  However, it is common that the game store where the spinning machine is installed is illuminated with a certain level of brightness, and when a dark image as shown in FIG. 7B is displayed on the display screen, The scenery P around the gaming machine is reflected on a protective glass or the like stretched on the surface of the image display device.

Then, if the above-mentioned reflection occurs in the scene where the dark image is to be displayed, the production effect intended by the producer is ruined by the display of the dark image, or the player who is enthusiastic about the game The appearance of the figure and the person looking into the display screen from behind the player reflected inconveniences such as embarrassing feelings and awkward feelings.
JP 2007-136063 A

  The present invention has been made in view of the above problems, and achieves one or more of the following objects.

  That is, an object of the present invention is to provide a gaming machine and a program capable of preventing a scene around the gaming machine from being reflected on the display screen when a dark image is displayed on the display screen.

  Another object of the present invention is to provide a gaming machine and a program capable of preventing reflection in a display portion having a low brightness in the display screen.

  Still another object of the present invention is to provide a gaming machine and a program capable of achieving the effect of preventing reflection by only improving software without accompanying hardware improvement.

The present invention solves the above problems,
A gaming machine comprising image display means for displaying an image on a display screen, comprising display control means for maintaining the brightness of a pixel on the display screen at or above a predetermined minimum brightness value determined to prevent reflection. A gaming machine characterized by (Claim 1), or
A program that is interpreted and executed by a computer installed in a gaming machine having an image display means having a display screen, wherein the brightness of a pixel on the display screen is equal to or greater than a predetermined minimum brightness value that is set to prevent reflection A program for causing the computer to execute a display control procedure to be maintained at ( 3 ).

  The gaming machine of the present invention includes a revolving type gaming machine (pachislot machine), a ball and ball game machine (pachinko machine), a medal game machine (mahjong game machine) installed in gaming stores such as pachinko shops, pachislot shops, and game centers. Etc.) are included.

  The image display means of the present invention includes any display device capable of displaying an image, such as a liquid crystal display device (LCD), a CRT display device, or an organic EL display device.

  In the present invention, the brightness of the pixels on the display screen is maintained at a predetermined value (minimum brightness value) or more, so that the scene around the gaming machine is reflected when black or a color close to black is displayed on the display screen. Can be prevented.

The brightness in the present invention refers to the degree of brightness of the display color. The brightness (Y) of the pixel has the relationship of the following formula (1) with respect to its RGB value, and the brightest display color (RGB value is [255, 255, 255] that can be displayed in the image display device). The brightness of the display color when the color is) is 100%, and the brightness of the darkest display color (the display color when the RGB value is [0, 0, 0]) is 0%.
Y = 0.299R + 0.587G + 0.114B (1)

  The minimum brightness value in the present invention is preferably set to a value as low as possible so long as it does not cause a reflection that is recognizable to the player or is of interest to the player. Note that the manner in which the reflection occurs is affected by the type of the image display device used in the gaming machine and the brightness of the store where the gaming machine is installed, so the minimum brightness value is the image display device used. It can be determined by experimentation according to the brightness of the average game store, or the minimum brightness value may be set at the game store to enable adjustment at each game store. .

  The minimum brightness value is preferably 2 to 10%, more preferably 3 to 6%, and particularly preferably 4 to 5%.

In the present invention, when the display control means is designated by data for generating an image to be displayed on the display screen, the brightness below the minimum brightness value for a predetermined number of pixels or more on the display screen. The brightness of a predetermined number of pixels or more is configured to be set to the minimum brightness value , or the display control unit is configured to set the minimum brightness value for all pixels in a region having an area of a predetermined value or more on the display screen. It is possible to configure so that the lightness of each pixel in the area is set to the minimum lightness value when a lightness lower than is specified by data for generating an image to be displayed on the display screen.

  In other words, even if significant reflection occurs on the display screen, if the number of pixels that cause reflection is small, or if reflection occurs only in a very small area within the display screen, the effect There is no substantial adverse effect on Accordingly, the brightness of the pixel or the pixels in the area is set to the minimum brightness value only when a color having a brightness lower than the minimum brightness value is displayed in a predetermined number of pixels or in an area of a predetermined area or more. This makes it possible to reduce the processing load for avoiding reflections. The data for generating an image to be displayed on the display screen in the present invention is, for example, recorded on the recording medium when the image data recorded on a recording medium such as a DVD-ROM is displayed on the display screen. The generated image data is the content of the present invention, and when the image data generated by CG or the like is displayed on the display screen, the generated image data is the content of the present invention.

  As a specific method for keeping the brightness of each pixel on the display screen above a predetermined minimum brightness value, a method of keeping the RGB value of a pixel above a predetermined minimum RGB value can be exemplified.

  The minimum RGB value in this case is preferably [5, 5, 5] to [25, 25, 25], more preferably [7, 7, 7] to [15, 15, 15], and particularly preferably [10 , 10, 10] to [13, 13, 13].

The present invention
Image display means for displaying an image on the display screen;
A gaming machine comprising display control means for displaying a plurality of types of effect videos on the display screen,
At least one of the plurality of types of effect videos includes a dark image display scene,
The display control means sets the brightness of all pixels on the display screen in the display scene of the dark image or a predetermined pixel to a value equal to or higher than a predetermined minimum brightness value determined to prevent reflection. A gaming machine ( Claim 2 ), or
An image display device for displaying an image on a display screen;
A program that is interpreted and executed by a computer installed in a gaming machine comprising display control means for displaying a plurality of types of effect videos on the display screen,
At least one of the plurality of types of effect videos includes a scene where a dark image is displayed,
The display control means is a value greater than or equal to a predetermined minimum brightness value determined to prevent reflection of brightness of all pixels on the display screen in the scene where the dark image is displayed or a predetermined pixel. It is possible to make a program ( Claim 4 ) characterized by causing the computer to execute a procedure for setting to.

  In such an invention, since each pixel in the dark image is displayed with a lightness equal to or higher than the minimum lightness value, the problem in the dark image that is liable to be adversely affected by reflection is simply solved. In addition, since the timing at which the dark image is displayed for each content is known, in the present invention, the process of setting the pixel brightness to a value equal to or greater than a predetermined minimum brightness value is performed only at the dark image display timing. The purpose of preventing reflection can be achieved, and the processing load can be reduced compared to the case where the brightness and RGB values of each pixel are monitored at all timings during image display. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  Although the present invention is applied to a gaming machine such as a revolving game machine or a ball game machine installed in a game store, in the following embodiment, it is applied to a revolving game machine Will be described.

  FIG. 1 is a perspective view showing an external configuration of a swivel type gaming machine 1 according to the first embodiment of the present invention.

  As shown in the figure, this reel-type gaming machine 1 is provided with a see-through window 2 in the center of the front of the housing, and each reel of the three reel devices 3L, 3C and 3R installed inside the housing. You can see through the symbols arranged above.

  Below the see-through window 2, a medal insertion slot 4 for inserting a medal for a game, a start lever 5 for instructing the start of rotation of the reel devices 3L, 3C, and 3R, and the rotating reel devices 3L, 3C, and Three stop buttons 6L, 6C and 6R for individually stopping 3R and a bet button 7 for betting credit medals are provided, and an image display composed of an LCD, a CRT or the like is provided above the transparent window 2. A device 8 is attached.

  A medal tray 9 having a tray 9b for storing the medal M paid out from the medal payout opening 9a when a winning combination is established is provided in the lower part of the front of the housing, and various effects are provided. Speakers 10a and 10b, which are sound output devices that output sound such as BGM and sound, are provided.

  In the upper part of the front of the housing, LEDs 11a and 11b, which are lighting devices that are arranged on the left and right of the image display device 8 and emit light such as lighting and blinking for various effects, are provided.

  FIG. 2 is a block diagram showing a schematic configuration of hardware mounted inside the casing of the swivel game machine 1 shown in FIG. 1, and particularly shows the configuration of the control system.

  As shown in the figure, the spinning machine 1 includes a main control board 20, a central display board 30, a sub control board 40, a spinning machine board 50, and a power supply board 60. The other substrates 30 to 60 are electrically connected to each other by a wiring cable (not shown).

  The main control board 20 includes a CPU, a ROM, a RAM, a timer, a clock signal generation circuit, a random number generator, a sampling circuit, and the like, and the CPU executes arithmetic processing in accordance with a system program stored in advance in the ROM. Overall control of the entire control system.

  More specifically, the CPU synchronizes with the timer interrupt by the clock signal generated by the clock signal generation circuit, to the start lever 5, stop buttons 6L, 6C and 6R, the bet button 7, and a medal selector (not shown). The switch output and sensor output of the built-in medal sensor 12 and the like are read through the central display board 30.

  Further, the CPU acquires a random value from a random number generator via a sampling circuit at a timing related to a predetermined game operation, and performs table lottery processing such as winning combination and effect pattern based on the random value.

  In addition, the CPU amplifies the four-phase drive pulse signal generated based on the above-described clock signal by the rotating device substrate 50 with respect to the stepping motor that is the rotational drive source of each of the reel devices 3L, 3C, and 3R. Supply. The CPU resets its position data each time it receives an operation signal from a reference position sensor provided in each of the reel devices 3L, 3C, and 3R, and accurately based on the drive pulse signal sent based on this. The rotational position of each reel is controlled.

  The main control board 20 is connected to a payout motor and a payout sensor of the hopper device via a power supply board 60, and the CPU pays out a prize, a medal lending, a credit checkout, etc. The motor is driven to rotate, and the required number of medals M are paid out to the tray 9b. Then, when the actual payout number of medals M detected by the operation of the payout sensor coincides with the scheduled number, control is performed to stop the drive of the payout motor.

  The sub-control board 40 according to the present embodiment drives the speakers 10a and 10b to sound based on the illumination control unit 41 that controls lighting or blinking of the LEDs 11a and 11b, and the sound signal that is selected from the sound source data and decoded. An acoustic control unit 42 and a display control circuit 43 connected to the image display device 8 are provided.

  Here, the display control circuit 43 generates an image to be displayed on the image display device 8 in accordance with a program stored in advance in a ROM (not shown). For example, a semiconductor device such as a GPU, an image decoder, or a display controller. It has. The GPU generates three-dimensional CG image data in accordance with a signal from the main control board 20, and records this in a predetermined storage area (VRAM or the like). Note that the data format of the image data in the present embodiment is such that the RGB values for each pixel are specified in 256 gradations from “0” to “255”, respectively.

  The display controller sequentially reads out the RGB value of each pixel stored in the storage area and transmits it to the image display device 8, and the image display device 8 determines the voltage value (horizontal voltage value) for each pixel based on the received RGB value. And the vertical voltage value) are controlled to display an image on the display screen.

  The main control board 20 has a medal payout device for paying out medals such as a hopper device via the power supply device board 60, and a main power supply device for supplying power to each device, each control board and the like when the main switch is ON. It is connected.

  FIG. 3 is a functional block diagram of the rotating type gaming machine 1 realized by executing the program according to the present invention recorded on the main control board 20 and the sub-control board 40.

  As shown in the figure, the spinning-reel game machine 1 includes a medal processing unit 71, a flag recording unit 72, a lottery execution unit 73, a lottery table 74, a reel control unit 75, a game result determination unit 76, a medal payout unit 77, and a special game. A game processing unit 70 composed of a processing unit 78, a viewpoint management unit 81, an object management unit 82, a virtual model management unit 83, an image drawing unit 84, an RGB value conversion unit 85, and an image recording unit 86 Eighty functional blocks are provided.

  Here, the viewpoint management unit 81 manages data regarding the arrangement coordinates and the viewpoint direction of the virtual viewpoint in the virtual space in association with the frame counter value.

  The object management unit 82 records the three-dimensional data of various objects arranged in the virtual space and the two-dimensional data of texture mapped to each object. Recorded data for multiple types of objects and characters representing the background and characters necessary to generate a normal performance video displayed on the screen and multiple types of notification effect video that announces the results of the lottery for multiple types of winning roles Has been.

  The virtual model management unit 83 derives coordinate data of each polygon constituting each object when each object is arranged in the world coordinate system based on the arrangement coordinate data and the attitude data determined corresponding to the frame counter value. This is provided to the image drawing unit 84.

  The image drawing unit 84 is a two-dimensional screen coordinate system in which polygon coordinate data given from the virtual model management unit 83 is separated from the virtual viewpoint by a predetermined distance in the viewpoint direction based on data specified by the viewpoint management unit 81. And RGB values for each pixel are derived by mapping the texture assigned to each polygon on the screen coordinates.

The RGB value conversion unit 85 derives the lightness Y from the RGB value of each pixel derived by the image drawing unit 84 according to the following expression (1), and when the derived lightness Y is below a predetermined minimum lightness value, A process of replacing the RGB value of the pixel with a predetermined minimum RGB value is executed.
Y = 0.299R + 0.587G + 0.114B (1)

  The minimum brightness value or the minimum RGB value may be set to a value as low as possible without causing a noticeable reflection that is clearly recognized by the player under the brightness of the average game store. Preferably, in the present embodiment, 4% is set as the minimum brightness value, and [10, 10, 10] is set as the minimum RGB value.

  The RGB value of each pixel derived by the image drawing unit 84 and the minimum RGB value for the pixel subjected to the replacement processing by the RGB value conversion unit 85 are recorded in the image recording unit 86 configured by a VRAM or the like. Each frame time is read out by the display controller and displayed on the image display device 8.

  FIG. 4 is a flowchart showing the flow of game processing executed in the game processing unit 70.

  When the player turns on the medal M from the medal insertion slot 4 while the power is on, the central display board 30 detects the insertion of the medal M and outputs the insertion detection signal. Output. Then, the medal processing unit 71 executes a credit medal number addition process (+1) in response to the insertion detection signal. Then, when the number of stored medals exceeds a predetermined number (for example, 3) as a price for one game, a medal insertion process such as setting the start flag of the flag recording unit 72 to ON is executed (step S1). ).

  Subsequently, the game processing unit 70 waits for a rotation signal assigned to start the rotation of the reels (step S2), and when a rotation signal is input, the lottery execution unit 73 performs a predetermined winning combination lottery. By comparing the random number value generated by the random number generator for use with a predetermined lottery table 74, the lottery of multiple types of winning combinations such as Seven, BAR, Bell, Watermelon, Cherry, and Replay In addition, when the winning combination is won (for example, the winning of the bell role), the ON / OFF of the winning flag (for example, the winning flag for the bell role) is rewritten, and the lottery result is displayed in the subsequent stage. The lottery process transmitted to the unit 80 is executed (step S3).

  In subsequent step S4, the reel control unit 75 transmits a reel rotation start signal that causes the reel devices 3L, 3C, and 3R to rotate the reel, so that each reel device 3L, 3C, and 3R drives the stepping motor. Rotate the reel.

  Thereafter, in step S5, the reel control unit 75 waits for a stop signal assigned to “stop rotation of the left reel”, “stop rotation of the middle reel”, or “stop rotation of the right reel”. In response, a stop process for stopping the rotation of the corresponding reel device is executed (step S6). Specifically, the reel control unit 75 transmits a stop signal to the corresponding reel device, so that the reel device stops driving the stepping motor and stops the rotation of the reel.

  The processing of step S5 to step S7 is repeatedly executed until the stop operation of all the reel devices 3L, 3C, and 3R is completed. When all the stop operations are completed (step S7: YES), the game result determination unit 76 determines the game result based on the stop symbol (step S8), and if any of the general winning combinations (for example, “Bell combination”) is established, the medal paying unit 77 wins a prize. A medal payout process for a predetermined amount predetermined for each combination is executed (step S9), and if any special combination (for example, “seven combination”) is established, a special game processing unit The special game process (step S10) by 78 is performed.

  FIG. 5 is a flowchart showing a flow of image drawing processing mainly executed by the display control unit 80.

  When the image drawing process is started, an initialization process (step S21) such as storing data relating to the virtual viewpoint or object recorded in the ROM or the like of the sub-control board 40 in the viewpoint manager 81 and the object manager 82 is executed. Subsequently, the reset of the frame counter value T (step S22) and its increment processing (step S23) are sequentially executed.

  In the following step S24, the virtual model management unit 83 operates to derive coordinate data of each polygon when each object is arranged in the virtual space according to the data defined for the frame counter value T. In step S25, the image drawing unit 84 is operated, and rendering is performed based on the coordinate data, whereby an RGB value for each pixel is derived.

In step S26, the RGB value conversion unit 85 operates, and based on the RGB value derived in step S25, the presence / absence of a pixel whose brightness Y is less than the minimum brightness value _Ymin is inspected.

When a pixel having a brightness Y less than the minimum brightness value Y _min is detected, the process proceeds to step S27, and the RGB value of the pixel is replaced with [10, 10, 10] that is the minimum RGB value. Is executed.

  In step S28, a process of recording the RGB value derived or replaced in steps S25 and S27 in the image recording unit 86 is executed. That is, the minimum RGB value is recorded in the image recording unit 86 for the pixels for which the RGB value replacement processing has been performed in step S27, and the RGB values derived in step S25 are directly used for the other pixels for the image recording unit. 86.

  The RGB values of each pixel recorded in step S28 are sequentially read out by the display controller at the timing when the frame counter value is T + 1 and output to the image display device 8.

  After completion of the process in step S28, the process returns to step S23 to execute image drawing in the next frame time.

  FIG. 6 is an explanatory diagram showing an exemplary aspect of the effect movie generated by the image drawing process and displayed on the image display device 8.

  The example shown in the figure is a case of a notice effect video that notifies whether a special role such as a Seven role or a BAR role is appropriate. A scene in which two characters fight (FIG. 6A) continues for a certain period of time. After that, if the result of the winning / failing lottery is a win, an ending where one character won the battle is displayed as shown in FIG. 6C, and if it is a loss, as shown in FIG. 6D. The ending in which the other character won the battle is displayed. As an effect for enhancing the player's tension and immersive feeling, the timing immediately before the ending display in FIG. 6 (c) or (d) is displayed. The dark image shown in FIG. 6B is displayed for a predetermined time.

  Here, if there is no pixel in which the brightness Y is less than the minimum brightness value in the image rendering process in each scene of FIGS. 6A, 6C, and 6D, the above step S27 is performed in the image rendering process during that time. The RGB value of each pixel derived in step S25 is displayed on the image display device 8 as it is without being executed.

  On the other hand, in the dark image scene of FIG. 6B, it is assumed that the data is set so that the RGB values of all the pixels or many pixels derived in step S25 are less than the minimum brightness value. However, the RGB value of such a pixel is replaced with a predetermined minimum RGB value by the process of step S27.

  And since the minimum RGB value is a value set in the above-described manner, it is clearly recognized by the player without detracting from the production intention such as tension or immersive feeling due to the display of the dark image. It is possible to prevent a remarkable reflection.

  The present invention has been described based on the exemplary embodiments. However, the present invention is not limited to the above embodiments, and various changes and modifications can be made within the scope of the claims. is there.

  For example, in the above embodiment, for the purpose of specifying a pixel that may cause reflection, a pixel whose brightness is less than a predetermined minimum brightness value is searched (step S26), and when such a pixel is detected, the pixel is detected. In the above description, the process of replacing the RGB value with the predetermined minimum RGB value (step S27) has been described. However, the display timing of the dark transition image in each effect video is registered in advance in the program, and the registration is performed. It is also possible to replace the RGB values of all pixels or a predetermined pixel specified in advance with a predetermined value (for example, the minimum RGB value) at the dark image display timing. It is possible to reduce the calculation load related to the search for pixels that are less than the value (step S26).

  In the above-described embodiment, the case where the pixel that can cause the reflection is determined based on the brightness of the pixel (step S26) has been described. However, the pixel that can cause the reflection is specified based on the RGB value of the pixel. For example, the RGB value is less than [10, 10, 10] (the R value is less than 10, the G value is less than 10, and the B value is less than 10). ) It is also possible to configure to search for a pixel and replace the RGB value of that pixel with a predetermined value (eg, [10, 10, 10]) when such a pixel is detected. is there.

  Further, in the above-described embodiment, when a pixel that can be reflected is detected, the process of replacing the pixel with a predetermined minimum RGB value (step S27) has been described. However, the reflection may occur. When a pixel is detected, the RGB value of the pixel may be converted according to an appropriate conversion formula so that the brightness of the pixel becomes a predetermined value (for example, 4%) or higher. Is possible.

  In the above embodiment, the case where the RGB values of all the pixels whose brightness is less than the predetermined minimum brightness value is replaced with the minimum RGB value is described. However, the number of pixels whose brightness is less than the predetermined minimum brightness value is predetermined. As long as the number is greater than or equal to the number, it is also possible to convert the RGB value of the pixel into an appropriate RGB value with a minimum RGB value or a lightness of a predetermined value (for example, 4%) or more. It is possible to reduce the calculation load related to the replacement of RGB values. Alternatively, only when the brightness of all pixels in a region of a certain predetermined area or more or the pixels of a predetermined ratio or more is less than the minimum brightness value, the RGB value of the pixel is set to a minimum RGB value or brightness of a predetermined value (for example, It is also possible to convert it to an appropriate RGB value that is 4%) or higher, and this can also reduce the calculation load related to the replacement of the RGB value.

  In addition, the apparatus configuration and the functional configuration, the specific processing content, the aspect of production, and the like in the above-described embodiment are described as examples only, and the present invention is not limited thereto.

The perspective view which shows the external appearance structure of the rotary type game machine which concerns on one Embodiment of this invention. Explanatory drawing which shows the hardware constitutions of the rotary type game machine which concerns on one Embodiment of this invention. Explanatory drawing which shows the main function structures of the rotary type game machine which concerns on one Embodiment of this invention. The flowchart which shows the flow of the game process in one Embodiment of this invention. 5 is a flowchart showing a flow of image drawing processing in an embodiment of the present invention. Explanatory drawing which shows the exemplary aspect of the effect animation displayed in one Embodiment of this invention. Explanatory drawing which shows the example aspect of the production | presentation animation in the conventional game machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cylinder-type game machine, 2 ... Perspective window, 3L, 3C, 3R ... Reel device, 4 ... Medal slot, 5 ... Start lever, 6L, 6C, 6R ... Stop button, 7 ... bet button, 8 ... image display device, 9 ... medal tray, 9a ... medal payout port, 9b ... tray, 10a, 10b ... speaker, 11a 11bLED, 12 ... medal sensor, 20 ... main control board, 30 ... central display board, 40 ... sub-control board, 41 ... illumination control unit, 42 ... acoustic control unit, 43: Display control circuit, 50: Revolving device board, 60: Power supply board, 70: Game processing unit, 71: Medal processing unit, 72: Flag recording unit, 73 ... lottery execution section, 74 ... lottery table, 75 ... reel control section, 7 ... Game result determination unit, 77 ... Medal payout unit, 78 ... Special game processing unit, 80 ... Display control unit, 81 ... Viewpoint management unit, 82 ... Object management unit, 83 ... Virtual model management unit, 84 ... Image drawing unit, 85 ... RGB value conversion unit, 86 ... Image recording unit

Claims (4)

A gaming machine comprising image display means for displaying an image on a display screen,
A gaming machine comprising display control means for maintaining the brightness of a pixel on the display screen at or above a predetermined minimum brightness value determined to prevent reflection. Image display means for displaying an image on the display screen;
A gaming machine comprising display control means for displaying a plurality of types of effect videos on the display screen,
A display scene of a dark image is included in at least one of the plurality of types of effect videos.
The display control means sets the brightness of all pixels on the display screen in the display scene of the dark image or a predetermined pixel to a value equal to or higher than a predetermined minimum brightness value determined to prevent reflection. A gaming machine characterized by that. A program that is interpreted and executed by a computer installed in a gaming machine having an image display means having a display screen,
A program for causing a computer to execute a display control procedure for keeping the brightness of a pixel on the display screen at or above a predetermined minimum brightness value determined to prevent reflection. An image display device for displaying an image on a display screen;
A program that is interpreted and executed by a computer installed in a gaming machine comprising display control means for displaying a plurality of types of effect videos on the display screen,
At least one of the plurality of types of effect videos includes a scene where a dark image is displayed,
The display control means is a value greater than or equal to a predetermined minimum brightness value determined to prevent reflection of brightness of all pixels on the display screen in the scene where the dark image is displayed or a predetermined pixel. A program for causing the computer to execute a procedure for setting to the above.

Images