JP2698129B2 - 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

Description: FIELD OF THE INVENTION The present invention relates to a shooting game apparatus, and more particularly, to an improvement of a shooting game apparatus formed so that a target is shot by using a gun.

[Prior Art] Conventionally, a shooting game has been widely performed, and in recent years, as such a game device, a game device formed by shooting a target displayed on a CRT with a gun has been widely used. ing.

FIG. 11 shows an example of such a conventional shooting game device.This game device is provided with a CRT 12 at a predetermined position of a casing 10 and is operated one after another according to a predetermined game program. The target is configured to be displayed on CRT12.

Then, when the player shoots this target using the gun 14, the position of the point of impact is detected using the position detection circuit and displayed on the CRT 12. When the position of the impact point matches the position of the target, it is determined that the bullet has hit the target, and the score corresponding to the target is displayed.

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

However, without actually firing a bullet from gun 14, CR
In such a game device configured to shoot a target displayed on T12, how to detect the impact position becomes a problem.

For this reason, in the conventional shooting game device, a light receiving element is provided at the muzzle portion of the gun 14. Then, at the same time as the player pulls the trigger of the gun 14, the screen displayed on the CRT 12 switches from the game screen to the white screen for position detection, and the CRT 1
The raster scanning of the white screen was started with the upper left corner of 2 as a starting point. At the same time as the raster scanning in the muzzle direction of the gun 14 is performed, light from the raster scanning screen is detected by the light receiving element provided on the gun 14, and the raster scanning position is detected as the landing position.

However, in such a conventional device, the player has to
When the trigger is pulled, the game screen of the CRT 12 switches to the white screen for a moment, so every time you shoot the gun 14, the flicker called flash occurs on the game screen displayed on the CRT 12 and the shooting game itself However, there is a problem that the feeling of intuition is reduced and the eyestrain is promoted.

For this reason, the present inventor considered that a light emitting element group is arranged in a matrix in the X and Y axis directions to detect a landing position.

With this configuration, it is possible to detect the landing position without switching the CRT screen from the game screen to the white screen for position detection.

However, when an attempt is made to detect a landing position using the light emitting element group, the matrix arrangement density of the light emitting element group is closely related to the landing position detection accuracy. Therefore, in order to accurately detect the landing position, a large number of light emitting elements must be arranged in a matrix at a high density, and there is a problem that the landing position detection mechanism itself becomes expensive.

[Problems to be Solved by the Invention] The present invention has been made in view of such a problem, and an object of the present invention is to use a light emitting element group arranged in a matrix to detect a landing position. An object of the present invention is to provide a shooting game apparatus capable of accurately detecting a landing position at a density higher than the matrix arrangement density of light emitting element groups.

[Means for Solving the Problems] In order to achieve the above object, the present invention relates to a shooting game apparatus for shooting a target using a gun. A light emitting element group formed so as to emit light outside the visible region for position detection from the display area to the outside, and at least two or more light emitting elements positioned in the muzzle direction of the gun as a position detection area. A light receiving element that receives light from a light emitting element located in the detection area and outputs a detection signal, and a center of two middle light emission blocks when an even number of light emitting elements are detected from one line in the position detection area. And a position detection circuit for detecting a central light emitting element as a landing position when an odd number of light emitting elements are detected from one line in the position detection area. To.

[Operation] Next, the operation of the present invention will be described.

In the present invention, the position detecting light emitting element group is X and Y
They are arranged in a matrix in the axial direction. Then, by sequentially performing light emission scanning, light outside the visible region for position detection is emitted outward from the target display area.

Therefore, when a player shoots a target with a gun,
At least two or more light emitting elements positioned in the muzzle direction of the gun are included in the position detection area of the light receiving element. When the light emitting element located in the position detection area is scanned for light emission, the light receiving element receives this light and outputs a detection signal to the position detection circuit.

Then, the position detection circuit obtains the position of the light emitting element to be scanned when the detection signal is output, and detects the impact position.

However, simply by detecting the position of the light emitting element as the landing position, the landing position cannot be detected with an accuracy higher than the matrix arrangement density of the light emitting elements.

A feature of the present invention is that the impact position can be detected with an accuracy higher than the matrix array density of the light emitting elements.

That is, the position detection circuit according to the present invention separates the case where an even number of light emitting elements are detected from one line in the position detection area of the light receiving element and the case where an odd number of light emitting elements are detected, The position is being detected.

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

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

By doing so, according to the present invention, between the light emitting elements actually arranged in a matrix and the light emitting elements, with the same accuracy as when another light emitting element is present,
The impact position can be detected.

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, the accuracy is twice that of the actually arranged light-receiving element group. Can be used for position detection. If the position detection is performed in both the X-axis direction and the Y-axis direction,
The impact position can be detected with four times the accuracy of the light emitting element group actually arranged in a matrix.

As described above, according to the present invention, since the detection of the landing position can be accurately performed using a small number of light emitting elements, the detection of the landing position is performed in an apparatus that performs a shooting game without actually firing a bullet. Can be performed inexpensively and accurately.

Next, a preferred embodiment of the present invention will be described with reference to the drawings.
Members corresponding to those of the conventional device shown in FIG. 11 are denoted by the same reference numerals, and description thereof is omitted.

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

Inside the housing 10, located below the display window 20,
The CRT 12 is fixed with its monitor screen 12a facing upward. Then, when the game calculation circuit 22 calculates a game screen that sequentially displays targets as the game progresses, the CRT 12 displays the calculated game screen on the monitor screen 12a.

Further, a half mirror 24 is mounted inside the housing 10 above the CRT 12. This half mirror 24
Is mounted inside the display window 20 in a state of being inclined forward by approximately 45 degrees, and is formed so as to reflect and display the monitor screen 12a of the CRT 12 toward the display window 20.

Accordingly, when the player holds the gun 14 and faces the display window 20, the display window 20 displays the game screen projected on the monitor screen 12a.

A light emitting element group is provided inside the housing 10 behind the half mirror 24. In the embodiment, the light emitting element group includes a plurality of LEDs 28 on an LED board 26 on the X axis and the Y axis. They are arranged in a matrix in the direction.

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

When the LED 28 emits light and scans, the infrared rays emitted from the LEDs arranged in a matrix form the half mirror 24.
And is emitted from the display window 20 to the outside.

In the device of this embodiment, the player holds the gun 14 and the housing 10
Monitor screen 12a, which is reflected and displayed using the half mirror 24 when standing in front of the display window 20 of the
The LED board 26 passing through the LED board 4 and being visible behind it is formed so as to overlap each other.

In this shooting game apparatus, the gun 14 is provided with a light receiving element 30 for detecting an impact position, which detects infrared light from the muzzle direction.

FIG. 2 shows a 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 detected.
It is necessary to set the detection area 110 so that at least two LEDs 28 are already included in 0.

Here, it is preferable that the detection area 110 be set so as to extend over a plurality of rows and a plurality of columns in the X-axis direction and the Y-axis direction.
This detection area 110 is designed to include up to four LEDs in one row.
Is set.

In the shooting game apparatus of the embodiment, as shown in FIG. 1, the gun 14 is connected to a position detection circuit 40 provided in the housing 10 via a line 32, and the trigger 14a of the gun 14 is operated. Then, the operation signal is input to the position detection circuit 40 via the line 32.

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

In the embodiment, the scanning of each LED 28 is first repeatedly performed for each row along the X-axis direction as shown in FIG. 3 (A).
As shown in FIG. 7B, the operation is sequentially repeated for each column along the Y-axis direction.

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

However, in this case, in order to increase the accuracy of detecting the landing position, it is necessary to arrange the LEDs 28 in a very dense matrix, which causes a problem that the cost of the entire apparatus increases. Also, if the arrangement density of the LEDs 28 is not increased, the accuracy of the landing position will be low, and the gap between the firing direction from the gun 14 and the landing position will occur, resulting in a shooting game with poor reality for the player. There's a problem.

The feature of the present invention resides in that the landing positions of the LEDs 28 on the LED board 26 are detected at a density twice or four times the actual matrix arrangement density.

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

By detecting the landing 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. In this case, if such position correction is performed in both the X-axis direction and the Y-axis direction, the landing position can be detected four times that of the LEDs 28 actually arranged in a matrix on the LED board 26. The impact position can be detected with high accuracy.

The position detection circuit 40 of the present embodiment performs such position detection in any of the X-axis direction and the Y-axis direction, detects the X coordinate and the Y coordinate of the landing position, and detects the detected landing position (X , Y) are output to the game operation circuit 22 via the line 34.

The game operation circuit 22 displays an image of a bullet hole 100 representing the impact on the monitor screen 12a corresponding to the impact position, further compares the impact position with the display position of the target, and determines whether the bullet hits the target. 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 described in more detail.

First, the player holds the gun 14 and the half mirror
Aiming at the target on the monitor screen 12a reflected on 24 is the same as aiming at the LED board 26 provided behind the half mirror 24. At this time, since the rear of the half mirror 24 is dark, the play layer can see only the monitor screen 12a reflected on the half mirror 24, 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,
Thereby, each LED 28 emits infrared light sequentially at different timings.

In this embodiment, first, as shown in FIG. 3 (A), the LEDs 28 are sequentially scanned for light emission one line at a time in the X-axis direction, and then, as shown in FIG. 3 (B), one line at a time in the Y-axis direction. Light emission scanning is performed.

Then, when the LED 28 is scanned for light emission in the X-axis direction, the position detection circuit 40 of the embodiment detects the X coordinate of the landing position based on the detection signal output from the light receiving element 30, and the LED 28 emits light in the Y-axis direction. The Y coordinate of the landing position is detected based on a detection signal output from the light receiving element 30 when the scanning is performed.

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

When light emission scanning of the LED 28 in the X-axis direction is started,
As shown in the figure, light emission from each of the LEDs 1, 2, and 3 existing in the detection area 110 is first detected by the light receiving element 30. However, for example, when a phototransistor or the like is used as the light receiving element 30, there is a characteristic that the sensitivity around the detection area 110 becomes weak due to directivity and the like, and the detection of the light emitting LED is performed around the detection area 110. Extremely unstable.

Therefore, in the landing position detection circuit 40 of the present embodiment, the fourth
As shown in the figure, after detecting the light-emitting LEDs around the detection area 110, the next one line is subjected to light-emission scanning as a landing position X coordinate detection line (X scan 2).

By this light emission scanning, 4,4 present in the detection area 110
Light emission of each of the LEDs 5 and 6 is detected by the light receiving element 30.

As described above, when an odd number of LEDs are detected, the position detection circuit 40 detects the centrally located LED, in this case, 5 LEDs.
Is detected as the landing position.

In addition, for example, as shown in FIG. 5, when a total of four LEDs of 4, 5, 6, 7 are detected in the detection area 110 in the landing position X coordinate detection row (X scan 2), the position Detection circuit 40
Is the X position of the landing position at the center of the two LEDs
Detect as coordinates. In this case, the calculation is performed with the intermediate position between the LEDs 5 and 6 as the landing position.

Thus, according to the present invention, the LED in the X-axis direction
The X coordinate of the landing position can be detected at a density approximately twice the arrangement density.

When the detection of the X coordinate of the impact position is completed,
The LEDs are sequentially scanned one row at a time in the Y-axis direction, and detection of the Y coordinate of the landing position is started.

In this way, the LEDs are sequentially scanned for light emission line by line,
When the measurement of the Y coordinate is started, first, each of the LEDs 1, 4, and 8 existing in the detection area 110 is detected as shown in FIG.

However, as described above, since the detection of the light receiving element 30 becomes unstable in the peripheral portion of the detection area 110, the apparatus of the embodiment sets the next row as the landing position Y coordinate detection row (Y scan 2). Light emission scanning is performed.

At this time, in the embodiment shown in FIG.
Each LED of 2, 5, 9, 12 existing in is detected. Thus, when an even number of LEDs are detected, the position detection circuit 4
In the case of 0, the intermediate position of the middle LED of the fifth and the 9th LED is calculated and output as the Y coordinate indicating the landing position.

Also, 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 center LED, that is, the Y coordinate where the 5 LEDs are present is determined. Output as the impact position.

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

As described above, in this embodiment, the LED board scans the LED 28 in both the X-axis direction and the Y-axis direction and complementarily detects the X and Y coordinates representing the landing position.
The landing position can be measured at a density four times that of the LEDs 28 actually arranged in a matrix on the matrix 26.

In the present embodiment, an example has been described in which the LED is scanned in both the X-axis direction and the Y-axis direction to perform complementary detection of the impact position. However, the present invention is not limited to this. Alternatively, the LED may be scanned only in one of the Y-axis directions to perform complementary detection of the landing position.

It is preferable that such a landing position is detected at a high speed. Therefore, the shooting game device of the present embodiment employs the following two countermeasures for detecting a high-speed position. .

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

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

As is apparent from the figure, since the output waveform of the light receiving element 30 has a falling edge and a falling edge, if the LED scanning signal is gradually accelerated, the detection signals output from the light receiving element 30 will become mutually different. They overlap with each other and are output as one detection signal.

For this reason, in this embodiment, high-speed scanning of the LED and
It is performed in combination with low-speed scanning.

That is, when the player pulls the trigger 14a of the gun 14, L
The LEDs 28 arranged in a matrix on the ED board 26
Light emission scanning is started in the axial direction.

Accordingly, for example, in the case shown in FIG. 4, light from each of the LEDs 1, 2, and 3 existing in the detection area 110
Even if the detection signals are sequentially detected as 0, the detection signals output from the light receiving element 30 are not separated from each other, and are simply output as one detection signal.

When the first detection signal is output from the light receiving element 30 in this manner, the apparatus of the present embodiment performs the light emission scanning of the next landing position X coordinate detection line at a relatively low speed. Specifically, light emission scanning is performed at about 1/3 the speed of high-speed scanning. Therefore, as shown in FIG. 4, for example, when each of the LEDs 4, 5, and 6 in the detection area 110 is sequentially scanned for light emission at a low speed, the light receiving element 30 distinguishes the light from each LED and outputs a detection signal. Can be output.

Thus, in the present embodiment, the detection area 11
Until the first LED present within 0 is detected, the LED 28 is scanned at a high speed, and after the first LED is detected, the LED is scanned at a relatively low speed.
Coordinates can be detected at high speed and reliably.

In addition, the apparatus of the present embodiment similarly operates the 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 The game device of the present embodiment switches the LED scanning in the X-axis direction to the LED scanning in the Y-axis direction in order to detect the impact position at a higher speed. I'm going like that.

That is, as described above, the light-receiving element 28 is sequentially scanned for light emission one line at a time in the X-axis direction, and after a position detection signal is detected from the light-receiving element 30, another line is used as the landing position X coordinate detection line. I do.

Then, the apparatus of the embodiment is formed such that, when the scanning of the impact position X coordinate detection row is completed, the 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 the LED scanning in the Y-axis direction is not performed using the upper left corner of the matrix-arranged LEDs as the starting point, but the first detected light emitting element (for example, the fourth In the embodiment shown in the figure, the x-coordinate of the light-emitting element “b” immediately before the light-emitting element “4” is used as the initiator (Y
Scan b). Then, from the initiator (Y scan b), the LEDs 28 are sequentially scanned by emitting light one row at a time in the Y-axis direction.

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

As described above, in the present embodiment, since the LEDs 28 arranged in the matrix-like position are scanned by emitting light as much as necessary without scanning all the rows and all the columns in the X-axis direction and the Y-axis direction, the X and Y coordinates of the landing position are used. Can be detected in a very short time.

Next, a specific circuit configuration of the position detection circuit 40 used in the shooting game device of the present invention will be described in detail.

FIG. 7 shows a specific circuit configuration of the shooting game apparatus of the embodiment. FIG. 8 shows the position detection circuit 40.
3 shows a timing chart of each part.

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 circuit 5
8, 60, a switching circuit 62, an X coordinate operation circuit 64, a Y coordinate operation circuit 66, and a serial transmission circuit 68.

(A) LED scanning in the X-axis direction When the player pulls the trigger 14a of the gun 14, the X-coordinate and Y-coordinate signals are input from the counter circuits 58 and 60 to the LED drive circuit 50 via the switching circuit 62. Is done.

Thereby, the LED drive circuit 50 first moves the LEDs 28 arranged in a matrix in the X-axis direction as shown in FIG.
Light emission scanning is performed sequentially for each row.

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

Then, the counter circuit 58 starts counting the scan clock 240 input from the oscillation circuit 52 via the AND gate 56. 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 5
8 counts the clock 200 output from the oscillation circuit 52 as it is, and outputs this count value from the output terminals of QA to QD. Here, this count value is
This represents the X coordinate of the light emission scanning position.

In the embodiment, the counter circuits 58 and 60 are 4-bit 2 bits.
It is formed as a binary counter. Therefore, the counter circuit 58 overflows each time the input clock 240 is counted from 0 to 15 in order, outputs the carry signal to the counter circuit 60, and starts the counting from 0 to 15 again. Repeat.

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

The X-coordinate data and the Y-coordinate data output from the counter circuits 58 and 60 are directly passed through the switching circuit 62 to the LED driving circuit 50, the X-coordinate operation circuit 64, and the Y-coordinate operation circuit 6.
Entered into 6.

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

Then, based on the X and Y coordinate data input in this manner, the LED driving circuit 50
As shown in FIG. 3A, light emission scanning is performed on the × 16 LEDs 28 repeatedly in the X-axis direction line by line.

At this time, the driving of each LED 28 is sequentially switched in accordance with the clock 200 output at a high speed from the oscillation circuit 52 as shown in FIG. 8, so that the light emission scanning of the LED 28 is performed at an extremely high speed. Therefore, for example, even if the LEDs 1, 2, and 3 present in the position detection area 110 are sequentially emitted at different timings as shown in FIG. 4, the light receiving element 30 provided on the gun 14 can distinguish the LEDs. It cannot be detected, and only one detection signal 220 is output from the detection circuit 80 to the control circuit 54 as shown in FIG.

For this reason, the control circuit 54 of the embodiment stops the scan clock in synchronization with the falling edge each time a detection signal is input after the scanning of the landing position X coordinate detection row (X scan 2) is started. The signal 210 is changed to L for two pulses.
The operation of switching to the level is performed. Therefore, the clock 240 input to the counter circuit 58 is
2/3 of the output clock 200.

Therefore, for example, as shown in FIG. 4, the scanning of the landing position X coordinate detection line (X scan 2) is performed, and when 4 LEDs are detected first, the scanning speed is reduced to 1/3 at the same time. In this manner, the detection circuit 80 can detect the four LEDs while distinguishing them from the other LEDs.

When the LED No. 4 is detected, each of the LEDs Nos. 5 and 6 is similarly scanned at 1/3 speed and detected separately from the 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 landing position X coordinate detection row, and detects the landing position quickly and reliably. Make it possible.

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

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

The switching circuit 88 receives the X-axis and Y-axis scanning switching signals CHA at the timing shown in FIG.

The scan switching signal CHA is set to L level at the same time when 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 the shift register 92A, the X coordinate interpolation data X of the landing position is obtained.
Control to output _D0 .

When the scanning of the landing position detection X coordinate row is completed, the scan switching signal CHA switches from L level to H level, whereby the switching circuit 88 selects the shift register of 92B and outputs the shift register 92B. Control is performed so that the landing position Y coordinate interpolation data Y _D0 is output from the terminal QC.

That is, the control circuit 54 of the embodiment simultaneously operates the trigger 14a of the gun 14 and simultaneously operates the flip-flops 81, 8
2, 84, the scan clock stop signal generation circuit 90 and the shift registers 92A, 92B are all reset. In this state, as described above, the LEDs 28 are sequentially scanned at high speed in the X-axis direction, one row at a time.

Then, as shown in FIG.
When the LED detection signal 220 is detected, the flip-flop
The output Q of 81 rises from L level to H level. However, at this time, since the output Q of the flip-flop 82 remains at the L level, the AND gate 86 does not open,
The output Q of the flip-flop 84 maintains the 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, and the carry signal is input to the flip-flop 82 as the Y-direction scan clock YCK. As a result, the output Q of the flip-flop 82 rises to the H level at the same time that the scanning of the X-position scanning row (X-scan 2) of the landing position of the LED is started.

Therefore, after the scanning of the landing position X coordinate detection row (X scan 2) is started, when a detection signal 220 of four LEDs is first input from the detection circuit 80, the detection signal 220 is input to the gate 98.
And is output as a second detection signal 230 via an AND gate 86. And flip-flop 8
The output terminal Q of 4 switches from L level to H level. As a result, every time a clock is input from the CK terminal thereafter, the shift register 92A shifts its D input one by one in synchronization with its rise, and outputs it from the QA to QD terminals.

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

Therefore, if the QC output of the shift register 92A is output as the X coordinate interpolation data _XD0 of the landing position, it is detected whether the number of LEDs existing in the detection area 110 in the landing position X coordinate detection row is odd or even. be able to. For example, the fourth
If the number of detected LEDs is odd as shown in the figure, X
_D0 = 0, and as shown in FIG.
If the LED is even, X _D0 = 1.

A Q output of the flip-flop 84 and a switching circuit
The second detection signal 230 output via 88 is input to the scan clock stop signal generation circuit 90. The scan clock stop signal generation circuit 90 outputs the second detection signal when the Q output of the flip-flop 84 is at the H level.
When 230 is input, as shown in FIG. 8, the scan clock stop signal 210 is switched from H level to L level by two pulses of the clock 200, and then automatically returned to H level. Therefore, for example, as shown in FIG.
When the detection signal 220 for the LED is output, the scanning speed of the LED is reduced to 1/3, and thereafter, at the speed of 1/3, 5, 6
LEDs are scanned for light emission.

Therefore, each LED arranged in a matrix on the LED boat 26
28 scans light emission at high speed until 4 LEDs are detected, emits light at 1/3 scanning speed while 4 LEDs are detected, and while LEDs present in the detection area 110 are detected. Therefore, the light receiving element 30 can clearly detect each LED and detect it.

(C) LED scanning in the Y-axis direction When the scanning of the landing position X coordinate detection line is completed, the scanning switching signal CHA switches from the L level to the H level. As a result, the shift register 92B is selected in place of the shift register 92A, and L is synchronized with this.
The scanning in the Y-axis direction of the LEDs 28 arranged in a matrix on the ED board 26 is started.

That is, simultaneously with the switching of the scanning signal CHA, the switching circuit 62 shown in FIG. 7 switches the X and Y coordinates, and outputs the output of the counter circuit 58 as the Y coordinate and the output of the counter circuit 60 as the X coordinate. I do.

At this time, in the counter circuit 60, a column included in the light emitting element immediately before the light emitting element first detected in the landing position detection row is set as the scanning start initial value. For example, as shown in FIG. 4, when 4 LEDs are first detected, the initial value of the X coordinate immediately before that, ie, the row where the b LED exists (Y scan b), starts scanning. Is set as

Therefore, the apparatus of the embodiment performs the LED scanning in the Y-axis direction by two times.
When the scanning is performed for the number of rows, the first LED existing in the detection area 110 is detected, and the next row (Y-scan 2) is scanned as a landing position Y-coordinate detection row, similar to the case of detecting the X coordinate. Then, the Y coordinate of the landing position is detected.

FIG. 9 shows a specific configuration of a circuit for initially setting the X coordinate in the counter circuit 60 when scanning in the Y-axis direction is performed from scanning in the X-axis direction.

In the circuit of the embodiment, when the LED is scanned in the X-axis direction, when the LED of 5 is scanned (when the QA output of the shift register 92A becomes H level), the counter circuit 58 outputs the signal at this time. count output of QA to QD (4 of the LED of the X-axis coordinate position) of the X ₁ to X _4, previously latched once not shown latch circuit. At the same time when the scanning of the landing position X coordinate detection row is completed, the latched X coordinate position is determined by the counter circuit.
Enter 60 as the initial value. And this counter circuit
Two down count pulses are input to 60 via the AND gate 76, and the set initial value is reduced by two pulses.

In this way, the scanning of the LEDs in the Y-axis direction can be performed with, for example, the row where the LED b is present (Y scan b) in FIG. 4 as the starting row, and the detection of the Y coordinate of the landing position Can be performed at high speed.

(D) Calculation of the impact position In this way, the circuit of the embodiment obtains the X- and Y-coordinate interpolation data X _D0 and Y _D0 of the impact position in the shift registers 92A and 92B shown in FIG. The interpolation data thus obtained is output in real time to the X coordinate operation circuit 64 and the Y coordinate operation 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 _XD0 input in real time in this way and the X coordinate scanning position data X input in real time from the counter circuit 58, Serial transmission circuit 68
Output to

In embodiments, the landing position X coordinate, the X coordinate of the LED output from the counter circuit 58 the upper 4-bit data, the interpolation data X _D0 outputted from the control circuit 54 (the shift register 92A) as the lower 1-bit data The combination is output as 5-bit X coordinate data.

By doing so, if the number of LEDs detected in the detection area 110 in the landing position X coordinate detection row is an odd number, the lower one bit becomes 0, and the LEDX coordinate data ( In FIG. 4, X of 5 L
Is output as the landing position X coordinate data.

Also, in the impact position X coordinate detection line, the detection area 110
If an even number of LEDs are detected within
LED X coordinate data output from 8 and shift register
Combined with the 1-bit interpolation data representing the center position of the adjacent LED output from 92A, the two
The intermediate position between the LEDs (LEDs 5 and 6 in FIG. 5) is output as X coordinate data representing the landing position.

Similarly, the Y-coordinate calculation circuit 66 of the embodiment converts the Y-coordinate of the LED input in real time from the counter circuit 58 into the upper 4 bits of data, the control circuit 54 (shift register
92B) The interpolation data input in real time from
The data is combined as bit data and output to the serial transmission circuit 68 as Y coordinate data representing the impact position.

Then, the serial transmission circuit 68 transmits the X coordinate and Y coordinate data (X, Y) of the impact position input from each of the arithmetic circuits 64 and 66 to the game arithmetic circuit 22 based on the data transfer command output from the control circuit 54. It is formed so as to output to.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention.

For example, in the above-described embodiment, the case where the display screen of the CRT and the LED board are formed so as to overlap each other via a half mirror and the landing position is detected based on the light from the LED board 26 has been described as an example. However, the present invention is not limited to this, and a plurality of LEDs may be arranged in a matrix on the target itself, and the landing position may be detected based on the same principle.

[Effects of the Invention] As described above, according to the present invention, when the light emitting elements arranged in a matrix for detecting the impact position are used,
There is an effect that it is possible to provide a shooting game device capable of accurately detecting a landing position at a density higher than the matrix arrangement density of the light emitting elements.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a preferred example of a shooting game apparatus to which the present invention is applied, FIG. 2 is an explanatory view of a landing position detection principle of this embodiment, and FIG. 3 is an LED shown in FIG. It is explanatory drawing which shows the light emission scan of a board, FIG. (A) is a scan in the X-axis direction, FIG.
Is an explanatory diagram showing scanning in the Y-axis direction, FIGS. 4 and 5 are explanatory diagrams of a detection area of a light receiving element on an LED board, and FIG. 6 is a timing chart for explaining a light emission scanning speed of LEDs arranged in a matrix. FIG. 7 is an explanatory diagram showing a specific configuration of a circuit used in the shooting game device of the present embodiment, FIG. 8 is a timing chart of each circuit shown in FIG. 7, and FIG. 7 is an explanatory diagram showing a specific configuration of the counter circuit shown in FIG. 7, FIG. 10 is an explanatory diagram showing a specific configuration of a part of the control circuit shown in FIG. 7, and FIG. 11 is a conventional shooting game device It is explanatory drawing which shows an example of. 20… Display window 26… LED board 28… LED 30… Light receiving element 40… Position detection circuit 110… Position detection area

Claims (4)

(57) [Claims] 1. A shooting game device for shooting a target using a gun, wherein the shooting is performed by arranging in a matrix and sequentially performing light emission scanning.
A light emitting element group formed so as to emit light outside the visible region for position detection to the outside from the display area of the target, and at least two or more light emitting elements positioned in a muzzle direction of the gun as a position detection area, A light receiving element that receives light from a light emitting element located in the 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 in the position detection area And a position detection circuit for detecting a central light emitting element as a landing position when an odd number of light emitting elements are detected from one line in the position detection area. apparatus. 2. The device according to claim 1, wherein the light emitting element groups are arranged in a matrix in an X-axis direction and a Y-axis direction. The light-emitting elements are sequentially scanned for light emission one by one in the axial direction, and a position detection area is formed so that the light-receiving elements include at least two light-emitting elements in the X-axis direction and at least two light-emitting elements also in the Y-axis direction. The circuit is configured to detect the X coordinate of the landing position by scanning the light emitting element group in the X axis direction, and to detect the Y coordinate of the landing position by scanning the light emitting element group in the Y axis direction. A shooting game device characterized by the following: 3. The apparatus according to claim 2, wherein the light receiving element has a position detection area set to extend over a plurality of rows and a plurality of columns of the light emitting element group, and the light emitting element group has an X-axis. After the detection signal is output from the light receiving element, another row is scanned as the landing position X coordinate detection row, and then the light emitting scanning is sequentially performed one column at a time in the Y axis direction. After the detection signal has been output from the above, another row is scanned as a landing position Y coordinate detection row, and the position detection circuit detects the X coordinate of the landing position by scanning the landing position X coordinate detection row of the light emitting element group. The Y of the landing position is obtained by scanning the landing position Y coordinate detection column of the light emitting element group.
A shooting game device formed to detect coordinates. 4. The apparatus according to claim 3, wherein the light receiving element group is sequentially scanned for light emission one line at a time in the X-axis direction, and further outputs another line after a detection signal is output from the light receiving element. Scanning is performed as a landing position X coordinate detection row, and then a row in which at least one light emitting element before the light emitting element detected first in the landing position X coordinate detection row is set as a start column and one column in the Y-axis direction. A shooting game device characterized by being formed so that light emission scanning is sequentially performed on each of the light receiving elements, and a detection signal is output from the light receiving element, and then another row is scanned as a landing position Y coordinate detection row.