JPH02134182A - Shooting game device - Google Patents

Abstract

PURPOSE:To detect an impact position precisely at low cost by emitting a light outside visual region from a target display area with matrix disposition, and determining as the impact position two central light emitting elements if an even number of light emitting elements are detected from the position detecting area in the direction of a muzzle and the center light emitting element if an odd number is detected. CONSTITUTION:When the trigger 14a of a gun 14 is pulled, a position detecting circuit 40 successively scans the matrixdisposed LED, whereby each LED 28 successively emits infrared rays at different timings. Based on the detection signal of a light receiving element 30, the position detecting circuit 40 detects as the impact position the center position of central two light emitting elements when an even number of LED 28 are detected on a line within a position detecting area 110 and the position of the central light emitting element 28 when an odd number is detected. By this positional correction, the detection of impact position can be carried out, for example, at an accuracy four times the LED 28 matrix-disposed on a LED board 26 to the Y-axial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shooting game device, and particularly to an improvement in a shooting game device configured to shoot at a target using a gun.

[Prior Art] Shooting games have been widely played in the past, and in recent years, game devices designed to shoot targets displayed on a CRT using a gun have become widely used. ing.

FIG. 11 shows an example of such a conventional shooting game device, in which a CRT 2 is provided at a predetermined position of a housing 10, and calculations are performed one after another according to a predetermined game program. The target is displayed on CRT12.

When the player shoots at this target using the gun 14, the position of the impact point is detected using the position detection circuit and displayed on the CRTl2.

When the position of the impact point matches the position of the target, it is determined that the bullet has hit the target, and a score corresponding to this target is displayed.

Therefore, the player can visually enjoy seeing whether or not the bullet hits the intended target, and can also enjoy the game while watching his or her score displayed in real time.

However, without actually firing a bullet from the gun 14, C
In such a game device configured to shoot at a target displayed on RTl2, the problem is how to detect the impact position.

For this reason, in the conventional shooting game device, a light receiving element is provided at the muzzle of the gun 14. And the player has gun 14
At the same time as the trigger is pulled, the screen displayed on the CRT 12 switches from the game screen to the white screen for position detection, and rask scanning of the white screen starts from the upper left corner of the CRT 12. At the same time as the rask scanning in the muzzle direction of the gun 14 is performed, a light receiving element provided in the gun 14 detects light from the rask scanning screen, and the rask scanning position is detected as the impact position.

However, in such a conventional device, the player can use the gun 14.
When you pull the trigger, the CRT12 game screen will switch to a white screen even momentarily, so every time you shoot gun 14, the CRT12 game screen will switch to a white screen.
There is a problem in that a flicker called a flash occurs on the game screen displayed on the RTl2, causing a decrease in the sense of realism of the shooting game itself and increasing eye fatigue.

Therefore, the inventor of the present invention considered arranging a group of light emitting elements in a matrix in the X and Y axis directions to detect the impact position.

In this way, it becomes possible to detect the impact position of the bullet without switching the CRT screen from the game screen to the white screen for position detection.

However, when attempting to detect the impact position using a light emitting element group in this manner, the matrix arrangement density of the light emitting element group is closely related to the accuracy of impact position detection. Therefore, in order to accurately detect the landing position, a large number of light emitting elements must be arranged in a matrix at high density, which poses a problem in that the landing position detection mechanism itself becomes expensive.

[Problem to be solved by the invention J The present invention has been made in view of the above problems, and its purpose is to solve the problem even when a group of light emitting elements arranged in a matrix is used to detect the landing position. It is an object of the present invention to provide a shooting game device that can accurately detect the impact position at a density higher than the matrix arrangement density of light emitting elements.

In a shooting game device that uses a gun to shoot at a target, the lights are arranged in a matrix and are sequentially scanned to emit light.
A position detection area includes a group of light emitting elements formed to emit light outside the visible range for position detection from the display area of the target, and at least two or more light emitting elements located in the muzzle direction of the gun; A light-receiving element that receives light from a light-emitting element located within this position detection area and outputs a detection signal, and a light-receiving element that outputs a detection signal when an even number of light-emitting elements are detected from one line within the position detection area, and two light emission blocking blocks in the middle. The present invention is characterized by comprising: a position detection circuit that detects the center of the droplet as the landing position, and detects the central light emitting element as the landing position when an odd number of light emitting elements are detected from one line within the position detection area.

[Means for solving problems] In order to achieve the above object, the present invention has the following features: [Work] Next, the present invention will be explained in detail.

In the present invention, the position detection light emitting element group is arranged in a matrix in the X and Y axis directions. Then, by sequentially scanning the light emission, light outside the visible range for position detection is emitted from the display area of the target to the outside.

Therefore, when a player shoots at a target using a gun, at least two or more light emitting elements located toward the muzzle of the gun are included within the position detection area of the light receiving element.

Then, when the light emitting element located within this position detection area is scanned to emit light, the light receiving element receives this light and outputs a detection signal to the position detection circuit.

Then, the position detection circuit determines the position of the light emitting element that is scanned for light emission when this detection signal is output, and detects the landing position.

However, simply detecting the position of this light emitting element as the impact position does not allow the impact position to be detected with accuracy higher than the matrix arrangement density of the light emitting elements.

A feature of the present invention is that it is possible to detect the impact position with an accuracy higher than the matrix arrangement density of light emitting elements.

That is, the position detection circuit of the present invention detects the landing of the light emitting elements separately when an even number of light emitting elements are detected from one line within the position detection area of the light receiving element and when an odd number of light emitting elements are detected. The location is being detected.

When an even number of light emitting elements are detected, the center of the two middle light emitting elements, that is, the space between the two light emitting elements is detected as the landing position.

Furthermore, when an odd number of light emitting elements are detected, the central light emitting element is detected as the landing position.

By doing so, according to the present invention, the impact position can be detected with the same accuracy as when one more light emitting element is present between the light emitting elements actually arranged in a matrix. It can be carried out.

Therefore, according to the present invention, when the light-receiving elements are arranged in a matrix in the X-axis and Y-axis directions, if the position detection is performed only in the X-axis direction, two of the actually arranged light-receiving element groups can be
Position detection can be performed with twice the accuracy. Furthermore, if the position detection is performed in both the X-axis direction and the Y-axis direction, the landing position can be detected with four times the accuracy of a light emitting element group actually arranged in a matrix.

In this way, according to the present invention, it is possible to accurately detect the impact position using a small number of light emitting elements, so that the impact position can be detected in a device for playing a shooting game without actually firing a bullet. can be done inexpensively and accurately.

[Embodiment] Next, a preferred embodiment of the present invention will be described based on the drawings. Note that the same reference numerals are given to the members corresponding to those of the conventional device shown in FIG. 11, and the explanation thereof will be omitted.

FIG. 1 shows a preferred embodiment of the shooting game device according to the present invention, and the game device of the embodiment has a game screen display window 20 formed at a predetermined position on the front surface of the housing 10. .

A CRT 12 is fixed inside the housing 10, located below the display window 20, with its monitor screen 12a facing upward. When the game calculation circuit 22 calculates a game screen that displays targets one after another as the game progresses, the CRT 12 displays the monitor screen 12a.
The calculated game screen is displayed above.

Furthermore, a half mirror 24 is mounted inside the housing 10 above the CRT 12.

This half mirror 24 is located inside the display window 20,
It is installed at an angle of approximately 45 degrees to the front, and the CRT12
The monitor screen 12a is formed to be reflected and displayed in the direction of the display window 20.

Therefore, when the player holds the gun 14 and faces the display window 20, the game screen projected on the monitor screen 12a will be displayed on the display window 20.

Further, inside the housing 10, a group of light emitting elements is provided behind the half mirror 24, and in the embodiment, this group of light emitting elements includes a plurality of LEDs on the LED board 26.
28 are arranged in a matrix in the X-axis and Y-axis directions.

Each of the LEDs 28 is formed to emit light outside the visible range, and in the embodiment is formed to emit infrared light.

When the LEDs 28 are scanned for light emission, the infrared rays emitted from each LED arranged in a matrix are transmitted through the half mirror 24 and emitted from the display window 20 to the outside.

In the device of this embodiment, a player holds a gun 14 and
When standing in front of the 0 display window 20, the half mirror 2
A monitor screen 12a that is reflected and displayed using a mirror 4, and an LED board 2 that is visible behind it through a half mirror 24.
6 are formed so as to overlap each other.

Further, in this shooting game device, the gun 14 is provided with a light receiving element 30 for detecting the impact position for detecting infrared light from the muzzle direction.

FIG. 2 shows the detection area 110 of the light receiving element 30. In the present invention, when the player holds the gun 14 and faces the display window 20, the detection area 110 of the light receiving element 30 is shown. It is necessary to set the detection area 110 so that it already contains at least two LEDs 28.

Here, it is preferable that the detection area 110 is set to extend across multiple rows and multiple columns in the X-axis direction and the Y-axis direction, and in this embodiment, one row,
This detection area 110 is set so that a maximum of four LEDs are included in one row.

Further, in the shooting game device of the embodiment, as shown in FIG. When the position detection circuit 40 is operated, the operation signal is input to the position detection circuit 40 via the line 32.

When a trigger operation signal is input to the position detection circuit 40,
Each LED 28 provided on the LED board 26 is scanned, and each LED is made to sequentially emit light at different timings.

In the embodiment, scanning of each LED 28 is first performed as shown in FIG.
As shown in A), scanning is performed row by row along the X-axis direction, and once the scanning in the X-axis direction is completed, scanning is performed row by row along the Y-axis direction as shown in FIG. 3(B). This is repeated in sequence.

At this time, as shown in FIG. 4, it is also possible to form the position detection circuit 40 so as to detect the position of the LED near the center of the detection area 110 as the landing position.

However, in this case, in order to improve the accuracy of detecting the landing position, it is necessary to arrange the LEDs 28 in an extremely dense matrix, which increases the cost of the entire device.

In addition, unless the arrangement density of the LEDs 28 is increased, the accuracy of detecting the impact position will be low, and a discrepancy will occur between the firing direction from the gun 14 and the impact position, resulting in a shooting game that lacks realism for the player. There's a problem.

The feature of the present invention is that the LED 2 on the LED board 26
8, the landing position is detected at a density that is twice or four times the actual matrix arrangement density.

Therefore, the position detection circuit of the present invention determines whether an even number of light emitting elements 28 are present on one line in the position detection area 110 or whether an odd number of light emitting elements 28 are present on one line in the position detection area 110 based on the detection signal of the light receiving element 30. The position is detected separately. When an even number of light emitting elements 28 are detected, the center position of the two middle light emitting elements is detected as the landing position. Furthermore, when an odd number of light emitting elements 28 are present on one line within the position detection area 110, the position of the central light emitting element 28 is detected as the landing position.

By detecting the impact position while performing such position correction, for example, if this position correction is performed only in the X-axis direction, the accuracy is twice as high as that of the LEDs 28 actually arranged in a matrix on the LED board 26. The impact position can be detected with
The landing position can be detected with four times the accuracy of LEDs 28 actually arranged in a matrix on 6.

The position detection circuit 40 of this embodiment performs such position detection in both the X-axis and Y-axis directions, detects the X and Y coordinates of the landing position, and detects the detected landing position (x , y) to the game calculation circuit 22 via line 34.
It is outputting to.

The game calculation circuit 22 displays an image of a bullet hole 100 representing the bullet impact on the monitor screen 12a corresponding to the impact position, and further compares the impact position with the display position of the target to determine whether the bullet hit the target or not. is judged and the score is displayed.

This embodiment has the above-described configuration. Next, the landing position detection operation of this embodiment will be explained in more detail.

First, the player holds gun 14 and holds it in a half mirror.
When aiming at the target on the monitor screen 12a shown on the screen 24, this is the LED board 2 installed behind the half mirror 24.
It would be the same as aiming for 6. At this time, since the rear of the half mirror 24 is dark, the player can
Only the monitor screen 12a reflected on the screen 24 can be seen, and the game screen is not damaged by the LED board 26.

Then, when the player pulls the trigger 14a of the gun 14,
The position detection circuit 40 sequentially scans the LEDs arranged in a matrix, whereby each LED 28 sequentially emits infrared light at different timings.

In this example, first, as shown in FIG. 3(A),
The LEDs 28 are sequentially emitted and scanned row by row in the X-axis direction, and then row by row in the Y-axis direction as shown in FIG. 3(B).

In the position detection circuit 40 of the embodiment, the LED 28 is
When light emission is scanned in the axial direction, the X coordinate of the landing position is detected based on the detection signal output from the light receiving element 30, and the LED
The Y coordinate of the landing position is detected based on the detection signal output from the light receiving element 30 when the light emitting device 28 is scanned in the Y-axis direction.

Detection of X Coordinate In this embodiment, the detection of the X coordinate of the landing position is performed as follows.

When the light emission scanning of the LED 28 in the X-axis direction is started, as shown in FIG.
, 2.3 are detected by the light receiving element 30. However, when a phototransistor or the like is used as the light-receiving element 30, the sensitivity around the detection area 110 becomes low due to directivity, etc., and the light emitting LED cannot be detected around the detection area 110. It becomes extremely unstable.

Therefore, in the landing position detection circuit 40 of this embodiment, the fourth
As shown in the figure, after the light emitting LEDs are detected around the detection area 110, the next row is used as the landing position X coordinate detection rod (X scan 2) to perform light emission scanning.

By this light emission scanning, the 4
, 5.6 are detected by the light receiving element 30.

In this way, when an odd number of LEDs are detected, the position detection circuit 40 selects the centrally located LED, in this case 5.
The X coordinate of the LED is detected as the impact position.

For example, as shown in FIG.
When a total of four LEDs of 6.7 are detected, the position detection circuit 40 detects the center position of the two LEDs located in the middle as the X coordinate of the landing position. In this case, 5
．． The intermediate position of each of the 6 LEDs is calculated as the landing position.

In this way, according to the present invention, the LED in the X-axis direction
The X coordinate of the impact position can be detected at a density that is approximately twice the arrangement density.

Detection of the Y coordinate and when the detection of the X coordinate of the impact position is completed, next
The ED is sequentially scanned line by line in the Y-axis direction, and detection of the Y coordinate of the impact position is started.

In this way, the LEDs are sequentially scanned to emit light one row at a time,
When the measurement of the Y coordinate is started, first, each LED of 1°4.8 that exists within the detection area 110 is detected as shown in FIG.

However, as described above, the detection of the light receiving element 3o becomes unstable in the periphery of the detection area 110.
The device of the implementer converts the next row into a landing position Y coordinate detection row (Y
Light emission scanning is performed as scan 2).

At this time, in the embodiment shown in FIG.
Each of the 2) 5, 9, and 12 LEDs present in the 2) is detected. In this way, if an even number of LEDs are detected,
The position detection circuit 4o calculates and outputs the intermediate position of the 5th and 9th LEDs in the middle as the Y coordinate representing the landing position.

In addition, as shown in FIG. 5, when an odd number of LEDs such as 2, 5, and 9 are detected in the detection area 110, the Y coordinate of the center LED, that is, the LED 5, is Output as the impact position.

As described above, according to the present invention, the Y coordinate of the landing position can be determined with twice the accuracy of LEDs actually arranged in the Y-axis direction.

As explained above, in this embodiment, the LED 28 is scanned in both the X-axis direction and the Y-axis direction,
In order to supplementally detect the X and Y coordinates representing the impact position, LE
LED2 actually arranged in matrix on D board 26
It becomes possible to perform the n1 constant of the landing position at a density four times that of 8.

In this embodiment, an example has been described in which the LED is scanned in both the X-axis and Y-axis directions to perform complementary detection of the landing position, but the present invention is not limited to this. Or LED only for either one of the Y-axis directions
It may also be formed to scan and perform complementary detection of the impact position.

Countermeasures for High-Speed Detection of the Impact Position By the way, it is preferable to detect the impact position at high speed, and for this reason, the shooting game device of this embodiment takes the following two measures for high-speed position detection. .

(a) First Countermeasure The first countermeasure is to scan each LED 28 to emit light at high speed. However, if the light emission scanning of the LED 28 is performed at high speed, the light receiving element 30 cannot distinguish and detect light from adjacent LEDs, making it difficult to perform accurate position detection.

FIG. 6 shows a timing chart of the scanning signal of the LED 28, the detection signal of the light receiving element 30, and a signal obtained by waveform shaping the detection signal.

As is clear from the figure, the output waveform of the light-receiving element 30 has a sharp falling edge and a falling edge, so the LED
When the scanning signal is gradually increased in speed, the detection signals output from the light receiving element 30 overlap with each other.
This will be output as one detection signal.

Therefore, in this embodiment, high-speed scanning of the LED and
This is done in combination with low-speed scanning.

That is, when the player pulls the trigger 14a of the gun 14, the LEDs 2 arranged in a matrix on the LED board 26
g starts light emission scanning in the X-axis direction at high speed.

Therefore, in the case shown in FIG. 4, for example, even if the light from each of LEDs 1, 2, and 3 existing in the detection area 110 is sequentially detected by the light receiving element 30, the output from the light receiving element 30 is The detected signals are not separated from each other and are simply output as one detection signal.

In the apparatus of this embodiment, when the first detection signal is output from the light receiving element 30 in this manner, the light emission scan of the next landing position X coordinate detection row is performed at a relatively slow speed.

Specifically, the light emission scan is performed at about 1/3 the speed of high-speed scanning. Therefore, for example, as shown in FIG.
When each of the 4.5.6 LEDs in 10 is sequentially scanned for light emission at a low speed, the light receiving element 30 can distinguish the light from each LED and output a detection signal.

In this way, in this embodiment, the detection area 11
LE until the first LED within 0 is detected.
By scanning the D28 for light emission at high speed, and after the first LED is detected, scanning the LED for light emission at a relatively low speed.
The X coordinate of the impact position can be detected at high speed and reliably.

In addition, the device of this embodiment similarly supports LE in the Y-axis direction.
By performing the D scan, the Y coordinate of the landing position can be detected at high speed and reliably.

(B) Second Countermeasure Furthermore, in order to detect the landing position more quickly, the game device of this embodiment switches from the LED scanning in the X-axis direction to the LED scanning in the Y-axis direction. That's how it goes.

That is, as described above, the light-receiving element 28 is sequentially emitted and scanned row by row in the X-axis direction, and after the position detection signal is detected from the light-receiving element 30, the light-receiving element 28 is further emitted as the landing position X-coordinate detection row. scan.

The apparatus of the embodiment is configured such that when the scanning of the landing position X coordinate detection row is completed, scanning in the Y-axis direction is started without scanning the next row in the X-axis direction.

The feature of this embodiment is that LED scanning in the Y-axis direction is not performed starting from the upper left corner of the LEDs arranged in a matrix, but from the first detected light emitting element (for example, the fourth In the example shown in the figure, the X coordinate of the light emitting element b, which is one place before the light emitting element 4), is set to the starting column (Y
Scan b).

Then, from this starting row (Y scan b), the LED 28 is
The light is sequentially scanned row by row in the axial direction.

By doing this, in the case shown in FIG. 4, for example, the Y coordinate of the landing position can be detected by simply scanning four rows of LEDs 28 in the Y-axis direction.

In this way, in this embodiment, the LEDs 28 arranged in a matrix do not scan all rows and columns in the X-axis direction and Y-axis direction, but only the necessary minimum amount of light is emitted, so the X and Y coordinates of the landing position are can be detected in an extremely short time.

Specific Position Detection Circuit Next, a specific circuit configuration of the position detection circuit 40 used in the shooting game device of the present invention will be explained in detail.

FIG. 7 shows a specific circuit configuration of the shooting game device of the embodiment. FIG. 8 shows this position detection circuit 40.
A timing chart for each part is shown.

The position detection circuit 40 of the embodiment includes an LED drive circuit 50, an oscillation circuit 52 . Control circuit 54. and gate 56
．． Counter circuits 58, 60. Switching circuit 62. X coordinate calculation circuit 64. It includes a Y coordinate calculation circuit 66 and a serial transmission circuit 68.

(a) Scanning of the LED in the X-axis direction Then, when the player pulls the trigger 14a of the gun 14,
X-coordinate and Y-coordinate signals from each counter circuit 58, 60 are input to the LED drive circuit 50 via a switching circuit 62.

As a result, the LED driving circuit 50 first sequentially scans the LEDs 28 arranged in a matrix row by row in the X-axis direction as shown in FIG. 3(A).

FIG. 9 shows a specific circuit configuration of the counter circuits 58 and 60 that output X and Y coordinate signals for light emission scanning. In the device of the embodiment, when the trigger 14a of the gun 14 is operated, the all-clear signal ACL is input to the clear terminal CL of each counter circuit 58 and 60.
All outputs QA-QD of the counter circuits 58 and 60 are cleared.

The counter circuit 58 receives a scan clock 240 inputted from the oscillation circuit 52 via the AND gate 56.
Start counting. At this time, since the H level scan clock signal 210 is input from the control circuit 54 to the other input terminal of the AND gate 56,
The counter circuit 58 directly counts the clock 200 output from the oscillation circuit 52, and converts this count value into a Q
It will be output from the output terminal of A-QD.

Here, this count value represents the X coordinate of the light emission scanning position.

In the exemplary embodiment, the counter circuits 58, 60 are designed as 4-bit binary counters. Therefore, the counter circuit 58 overflows every time it counts the input clock 240 sequentially from 0 to 15, outputs the carry signal to the counter circuit 60, and outputs the carry signal to the counter circuit 60.
The operation of starting the count from 1 to 15 is repeated.

Then, the counter circuit 60 counts the carry signals, sequentially increments the Y coordinate representing the light emission scanning position of the LED 28 one by one, and outputs this as Y coordinate data from its QA-QD terminal.

The X-coordinate data and Y-coordinate data outputted from both of these counter circuits 58 and 60 are passed through the switching circuit 62 to the LED drive circuit 50 and the X-coordinate calculation circuit 64. Y
It is input to the coordinate calculation circuit 66.

In this embodiment, each of the counter circuits 58 and 60 is formed as a 4-bit binary counter, and is configured to repeatedly count between 0 and 15 in decimal notation. Therefore, on the LED boat 26,
It is sufficient to arrange 16×16 LEDs in a matrix in the X-axis direction and the Y-axis direction, respectively.

Based on the X1Y coordinate data manually entered in this way, the LED drive circuit 50 repeats the 16X16 grid and ED2g arranged in a matrix row by row in the X-axis direction as shown in FIG. 3(A). to scan the light.

At this time, since the drive of each LED 28 is sequentially switched in accordance with the clock 200 outputted from the oscillation circuit 52 at high speed as shown in FIG. 8, the light emission scanning of the LED 28 is performed at an extremely high speed. Therefore, for example, as shown in FIG. 4, 1, 2, .
Even if the three LEDs emit light at the same timing, the light-receiving element 30 provided in the gun 14 cannot distinguish between them, and the detection circuit 80 outputs only one light as shown in FIG. Only the detection signal 220 is output to the control circuit 54.

For this reason, the control circuit 54 of the embodiment stops the scan clock in synchronization with the falling edge of the detection signal each time the detection signal is input after the scanning of the landing position X coordinate detection row (X scan 2) is started. An operation is performed in which the signal 210 is switched to the L level by two pulses. Therefore, the clock 240 manually input to the counter circuit 58 becomes 1/3 of the output clock 200 of the oscillation circuit 52 each time.

Therefore, for example, as shown in FIG. 4, when the landing position X coordinate detection row (X scan 2) is scanned and LED 4 is detected first, the scanning speed is simultaneously reduced to 1/3.

In this way, the detection circuit 80 detects the four LEDs from the other L.
It can be detected separately from ED.

When LED 4 is detected, then each LED 5.6 is also detected.
Similarly, it is scanned at 1/3 speed and detected separately from other LEDs.

In this way, the control circuit 54 of the embodiment scans each LED at high speed except for the LEDs existing in the detection area 110 in the impact position X coordinate detection rod, and detects the impact position quickly and reliably. possible.

(b) Control circuit FIG. 10 specifically shows a part of the control circuit 54 of the embodiment.

This control circuit 54 includes D-type flip-flops 81, 82, 84 . AND gates 86 and 96, gates 98, switching circuits 88, scan clock stop signal generation circuits 90. It includes shift registers 92A and 92B and an operation control circuit 94.

The X-axis and Y-axis scan switching signals CIA are input to the switching circuit 88 at the timing shown in FIG.

This scanning switching signal CHA is set to L level at the same time as the trigger 14a of the gun 14 is operated, and the switching circuit 88 selects the shift register A of 92a. Then, from the output terminal QC of this shift register 92A,
Control is performed to output coordinate interpolation data XDO.

Furthermore, when the scanning of the landing position detection Control is performed to output impact position Y coordinate interpolated data YDo from terminal QC.

That is, in the control circuit 54 of the embodiment, the flip-flops 81, 82, 84, the scan clock stop signal generation circuit 90, and the shift registers 92A, 92B are all reset at the same time as the trigger 14a of the gun 14 is operated. In this state, as mentioned above, the LED 28 is
The light is emitted and scanned row by row in the X-axis direction at high speed.

Then, as shown in FIG. 8 from the detection circuit 80, 1 to 3
When the detection signal 220 of the LED is detected, the output Q of the flip-flop 81 rises from the L level to the H level. However, at this time, the output Q of the flip-flop 82 remains at the L level, so the AND gate 8
6 is not opened, and the output Q of the flip-flop 84 remains at L level.

When the light emission scanning of this row is completed, the counter circuit 58 outputs a carry signal to the counter circuit 60,
This carry signal is input to the flip-flop 82 as the Y-direction scanning clock YCK. As a result, the output Q of the flip-flop 82 rises to the H level at the same time as the scanning of the landing position X coordinate scanning line (X scan 2) of the LED starts.

Therefore, after the scanning of the landing position The signal is inverted and output as the second detection signal 230 via the AND gate 86. Then, the output terminal Q of the flip-flop 84 switches from L level to H level. As a result, the shift register 92A is
From now on, every time a clock is input from the CK terminal,
In synchronization with the rising edge of the signal, the D inputs are shifted one by one and outputted from the QA-QD terminals.

FIG. 8 shows the output of this shift register 92A. As is clear from the figure, even if the detection signal 220 for the 4 LEDs is output in the X coordinate detection row,
At this point, the output of shift register 92A does not change. Then, when the detection signal 220 for LED 5 is output, the second detection signal 230 output from the AND gate 86 causes the output QA of the shift register 92A to
rises to H level, and similarly, when the detection signal 220 of LED 6 is output, the output QB rises to H level, and when the detection signal 220 of LED 7 is further output, the QC output rises to H level. .

Therefore, the QC output of this shift register 92A is used as the X coordinate interpolation data X of the impact position. If it is output as 0, it is possible to detect whether the number of LEDs existing in the detection area 110 in the landing position X coordinate detection row is an odd number or an even number.

For example, as shown in FIG. 4, when the number of detected LEDs is odd, Xoo=0, and as shown in FIG. 5, when the number of detected LEDs is even, Xoo=1
becomes.

Further, the Q output of the flip-flop 84 and the second detection signal 230 outputted via the switching circuit 88 are input to a scan clock stop signal generation circuit 90.

This scan clock stop signal generation circuit 90 generates a second signal when the Q output of the flip-flop 84 is at H level.
When the detection signal 230 is input, as shown in FIG. 8, the scan clock stop signal 210 is switched from the H level to the L level by two pulses of the clock 200, and then automatically returned to the H level. For this reason, for example, the fourth
As shown in the figure, when the detection signal 220 for LED 4 is output, the scanning speed of the LED decreases to 173,
After that, the 5.6 LEDs are scanned to emit light at 1/3 speed.

Therefore, each LED 28 arranged in a matrix on the LED boat 26 is scanned for emitting light at high speed until four LEDs are detected, and moreover, the LEDs present in the detection area 110 are detected. 1/3 while there
Since the light emission is scanned at a scanning speed of , the light receiving element 30 can clearly distinguish and detect each LED.

(c) Scanning of the LED in the Y-axis direction Then, in the device of the embodiment, when the scanning of the landing position X coordinate detection line is completed, the scanning switching signal CIA is switched from the L level to the H level. As a result, the shift register 92B is selected instead of the shift register 92A, and in synchronization with this, the LEDs arranged in a matrix on the LED board 26 are
28 starts scanning in the Y-axis direction.

That is, at the same time as this scanning signal CHA is switched, the switching circuit 62 shown in FIG.
Outputs the output of 0 as the X coordinate.

At this time, in the counter circuit 60, the column included in the light emitting element one position before the first detected light emitting element in the landing position detection row is set as the scanning start initial value. For example, as shown in Fig. 4, when LED number 4 is detected first, the initial value of the X coordinate at which the column one before it, that is, where the LED number b exists (Y scan b), starts scanning. is set as

Therefore, the device of the embodiment performs two LED scans in the Y-axis direction.
If the process is repeated for each column, the first L existing in the detection area 110 will be detected.
ED is detected and the next row (Y scan 2) is moved to the landing position Y.
By scanning as a coordinate detection array, the Y coordinate of the landing position is detected in the same way as when detecting the X coordinate.

FIG. 9 shows a specific configuration of a circuit that initializes the X coordinate in the counter circuit 6° when performing scanning from the X-axis direction to the Y-axis direction.

In the circuit of the embodiment, when LED 5 is scanned while scanning the LEDs in the X-axis direction (shift register 92A
When the QA ratio output reaches H level), the count outputs of QA to QD (X-axis coordinate position of LED 4) X, -X4 outputted from the counter circuit 58 at this time are latched into a latch circuit (not shown). I'll keep it. And this landing position
At the same time as the scanning of the coordinate detection line is completed, the latched X coordinate position is manually input to the counter circuit 60 as an initial value.

Then, two down-count pulses are input to this counter circuit 60 via an AND gate 76, and the set initial value is decreased by two pulses.

By doing this, scanning of the LEDs in the Y-axis direction can be controlled, for example, in the row (Y
Scan b) can be performed as the starting row, and the Y of the landing position
It becomes possible to detect coordinates at high speed.

(d) Calculation of the impact position In this way, the circuit of the embodiment obtains the X-coordinate and Y-coordinate interpolated data XDo, YDo of the impact position in the shift registers 92A, 92B shown in FIG. The interpolated data obtained is output in real time to an X coordinate calculation circuit 64 and a Y coordinate calculation circuit 66 as shown in FIG.

The X-coordinate calculation circuit 64 calculates the X-coordinate of the impact position based on the interpolation data XOO manually input in real time and the X-coordinate scanning position data X input in real time from the counter circuit 58, and calculates the The signal is output to the transmitting circuit 68.

In the embodiment, the landing position X coordinate is determined by combining the LED X coordinate output from the counter circuit 58 as upper 4 bit data and the interpolation data XDO output from the control circuit 54 (shift register 92A) as lower 1 bit data. In total, a total of 5 bits of X coordinate data is output.

By doing this, when an odd number of LEDs are detected within the detection area 110 in the landing position X coordinate detection rod, the lower one bit becomes 0, and the LED X coordinate data ( In Figure 4,
5) is output as landing position X coordinate data 1.

In addition, the detection area 110 in the impact position X coordinate detection rod
If an even number of LEDs are detected within the LED, the X coordinate data of the LEDs output from the counter circuit 58 and the 1-bit interpolated data representing the center position of adjacent LEDs output from the shift register 92A are combined. Two LEDs combined and located in the center (LEDs 5 and 6 in Figure 5)
) will be output as X coordinate data representing the landing position.

Similarly, the Y coordinate calculation circuit 66 of the embodiment uses the Y coordinate of the LED input in real time from the counter circuit 58 as upper 4 bit data, and the interpolation data input in real time from the control circuit 54 (shift register 92B) as lower 1 bit data. They are combined as bit data and output to the serial transmission circuit 68 as a Y coordinate block representing the landing position.

The serial transmitting circuit 68 includes each arithmetic circuit 64.6.
The X-coordinate and Y-coordinate data (X, Y) of the landing position input manually from 6 are output to the game calculation circuit 22 based on a data transfer command output from the control circuit 54.

Note that the present invention is not limited to the above embodiments,
Various modifications can be made within the scope of the invention.

For example, in the above embodiment, via a half mirror,
Although the description has been given using an example in which the CRT display screen and the LED board are formed so as to overlap each other and the impact position is detected based on the light from the LED board 26, the present invention is not limited to this. A plurality of LEDs may be arranged in a matrix and the landing position may be detected using the same principle.

[Effects of the Invention] As explained above, according to the present invention, when light emitting elements arranged in a matrix are used to detect the impact position, the impact position can be accurately determined with a higher density than the matrix arrangement density of the light emitting elements. This has the advantage that it is possible to provide a shooting game device that can detect

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a preferred example of a shooting game device to which the present invention is applied, FIG. 2 is an explanatory diagram of the principle of detecting the impact position of the present embodiment, and FIG. 3 is an explanatory diagram of the LED shown in FIG. 2. It is an explanatory diagram showing the light emission scanning of the board, the same figure (A) is the scanning in the X-axis direction, the same figure (B) is the scanning in the Y-axis direction.
An explanatory diagram showing scanning in the axial direction. Figures 4 and 5 are explanatory diagrams of the detection area of the light receiving element on the LED board. Figure 6 is a timing chart diagram illustrating the light emission scanning speed of the LEDs arranged in a matrix. , FIG. 7 is an explanatory diagram showing the specific configuration of the circuit used in the shooting game device of this embodiment, FIG. 8 is a timing chart diagram of each part of the circuit shown in FIG. 7, and FIG. FIG. 10 is an explanatory diagram showing a specific configuration of a part of the control circuit shown in FIG. 7. FIG. 11 is an example of a conventional shooting game device. FIG. 20...Display window 26...LED board 28...LED 30...Light receiving element 40...Position detection circuit 110...Position detection area agent Patent attorney Yukio Fuse (and 2 others) Figure Figure (A) (B)

Claims (4)

[Claims] (1) In a shooting game device in which a gun is used to shoot at a target, by being arranged in a matrix and sequentially scanning the light,
A position detection area includes a group of light emitting elements formed to emit light outside the visible range for position detection from the display area of the target, and at least two or more light emitting elements located in the muzzle direction of the gun; A light receiving element that receives light from a light emitting element located within this position detection area and outputs a detection signal, and two light emitting elements in the middle when an even number of light emitting elements are detected from one line within the position detection area. a position detection circuit that determines the center of the bullet as the landing position, and detects the central light emitting element as the landing position when an odd number of light emitting elements are detected from one line within the position detection area. Device. (2) In the device according to claim (1), the light emitting element group is arranged in a matrix in the X-axis direction and the Y-axis direction, and is sequentially emitted and scanned row by row in the X-axis direction, and in the Y-axis direction. The light receiving elements are sequentially scanned by emitting light one column at a time, and the position detection area of the light receiving elements is formed so as to include at least two light emitting elements in the X-axis direction and at least two light emitting elements in the Y-axis direction, and the position detection circuit is The light emitting element group is scanned in the X-axis direction to detect the X coordinate of the landing position, and the light emitting element group is scanned in the Y-axis direction to detect the Y coordinate of the landing position. A shooting game device featuring: (3) In the device according to claim (2), the light-receiving element has a position detection area set so as to span multiple rows and columns of the light-emitting element group, and the light-emitting element group includes:
The light is sequentially scanned row by row in the X-axis direction, and after a detection signal is output from the light receiving element, another row is scanned as a landing position X coordinate detection row, and then the light is scanned row by row in the Y-axis direction. After the detection signal is output from the light receiving element, one more row is scanned as a landing position Y coordinate detection row, and the position detection circuit determines the X coordinate of the landing position by scanning the landing position X coordinate detection row of the light emitting element group. The Y coordinate of the impact position of the light emitting element group is detected by scanning the detection row.
A shooting game device characterized in that it is configured to detect coordinates. (4) In the apparatus according to claim (3), the light-receiving element group is sequentially emitted and scanned line by line in the X-axis direction, and after a detection signal is output from the light-receiving element, another line is moved to the landing position. Scanned as an X-coordinate detection row, and then sequentially column by column in the Y-axis direction, starting from the row where the light-emitting element that is at least one previous to the light-emitting element detected first in the landing position X-coordinate detection row is located. A shooting game device characterized in that, after light emission is scanned and a detection signal is output from a light receiving element, one more row is scanned as a landing position Y coordinate detection row.