JP5705342B2 - Cursor relative position detection method using infrared LED and single point light sensor, cursor relative position detection device using the method, and gun game machine equipped with cursor relative position detection device - Google Patents

Description

  The present invention relates to a method for detecting the relative position of a cursor using an infrared LED and a single-point light sensor, in which infrared LEDs are arranged at the four corners of the screen and transmitted at respective unique frequencies, and a screen position is detected using a photodiode or the like. The present invention relates to a cursor relative position detection device using a cursor and a gun game machine including the cursor relative position detection device.

In the CRT monitor, scanning lines are repeatedly scanned for image display, the scanning lines are read by an optical sensor, and the position on the CRT is calculated from the relative time from the upper left.
However, since the LCD monitor does not display an image by the scanning line method, the position on the LCD monitor cannot be detected by the method described above.

Patent Document 1 discloses a position detection device and a position detection method for detecting the position of a predetermined image displayed on a display device.
This is because identifiers are provided at the four corners of the display unit, the controller type image pickup device is directed toward the display unit, the display unit is photographed, and the photographed image is compared with an image photographed in advance, thereby The position of the display unit is obtained by detecting the movement.
In this method, for example, an imaging device is built in a gun, and in the case of using a large number of guns, an imaging device must be provided for each gun.

JP 2002-81909 A

  An object of the present invention is to provide a light receiving element such as a photodiode without incorporating an imaging device in a gun controller, thereby detecting a coordinate (cursor) position on an LCD screen aimed at the gun controller or the like. A detection method, a cursor relative position detection device using the method, and a gun game machine including the cursor relative position detection device are provided.

In order to achieve the above object, claim 1 of the present invention is a method for detecting coordinates on a liquid crystal screen to which a photodiode is directed by arranging a light emitting element on the liquid crystal screen side and receiving light from the light emitting element. The photodiode has predetermined light receiving directivity distribution characteristics, and infrared LEDs which are light emitting elements are arranged at the four corners of the liquid crystal screen, respectively, and the infrared LEDs at the four corners emit light at mutually different frequencies. Simultaneously receives the output from the light emitting elements at the four corners, analyzes the combined output of the light emitting elements at the four corners by the calculation of the Fourier function, decomposes the frequency by orthogonal transformation, and outputs the luminance output from the light emitting elements at the four corners. When a certain amplitude value is obtained and the photodiodes are directed to the light emitting elements at the upper left position and the upper right position, respectively, the luminance levels of the light emitting elements at the upper left position and the upper right position are respectively. The brightness level received from the light emitting element at the upper left position when directed toward the upper left position and the light emitting element at the upper right position when directed toward the upper right position, with reference to each luminance level and the luminance level difference at this time Is divided by a predetermined step width, and when the photodiode is actually directed toward the light emitting element, the luminance levels obtained from the light emitting elements at the current upper left position and upper right position at this time are By associating with the table of numerical examples divided by the step width, the horizontal coordinate position is obtained, the same processing is performed for the light emitting elements at the lower left position and the lower right position, and further the light emitting elements at the upper left position and the lower left position Further, by obtaining the vertical coordinate position by performing the same process as the process of obtaining the horizontal coordinate position for the light emitting elements at the upper right position and the lower right position, Give d converted four light emitting element output, and calculates the coordinate position of the LCD screen in which the photodiode is directed by logically calculating four infrared LED corresponding output.
Claim 2 of the present invention is a method for detecting coordinates on a liquid crystal screen to which a light receiving element faces by receiving a light from the light emitting element by arranging a light emitting element on the liquid crystal screen side. Infrared LEDs, which are light emitting elements, are provided at the four corners of the liquid crystal screen, each having a predetermined light receiving directivity distribution characteristic, and the infrared LEDs at the four corners emit light with mutually different phases. The output from the light emitting element is received, the combined output of the light emitting elements at the four corners is analyzed by the calculation of the Fourier function, and the frequency value is decomposed by orthogonal transformation to obtain the amplitude value that is the luminance output by the light emitting elements at the four corners. Further, when the light receiving element is directed to the light emitting elements at the upper left position and the upper right position, respectively, the luminance level difference between the light emitting elements at the upper left position and the upper right position is obtained. Based on the bell difference, the luminance level received from the light emitting element at the upper left position when directed toward the upper left position and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position are divided by a predetermined step width. When the light receiving element is actually directed in the light emitting element direction, the brightness levels obtained from the light emitting elements at the current upper left position and upper right position at this time are associated with the table of numerical examples divided by the predetermined step width. The horizontal coordinate position is obtained, and the same processing is performed for the light emitting elements at the lower left position and the lower right position. Further, the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position are also performed. In addition, the same processing as that for obtaining the horizontal coordinate position is performed to obtain the vertical coordinate position, thereby obtaining four Fourier-transformed light emitting element outputs and corresponding to four infrared LEDs. The light receiving element by logically calculating the output, and calculates the coordinate position of the liquid crystal screen directed is.
According to a third aspect of the present invention, there is provided a method of detecting coordinates on the liquid crystal screen to which the light receiving element is directed by receiving a light from the light emitting element by arranging a light emitting element on the liquid crystal screen side. Infrared LEDs are provided at the four corners of the liquid crystal screen with predetermined light receiving directivity distribution characteristics, and the infrared LEDs at the four corners emit light in a time division manner and are received by the light receiving element. Output corresponding to the LED is obtained, and furthermore, the luminance level difference between the light emitting elements at the upper left position and the upper right position when the light receiving elements are respectively directed to the light emitting elements at the upper left position and the upper right position is obtained. Based on the difference, the luminance level received from the light emitting element at the upper left position when facing the upper left position and the luminance level received from the light emitting element at the upper right position when facing the upper right position are determined. When the light receiving element is actually directed in the direction of the light emitting element, the luminance level obtained from the light emitting elements at the current upper left position and upper right position at this time is divided by the predetermined step width. The coordinate position in the horizontal direction is obtained by associating with the above table, the same processing is performed for the light emitting elements at the lower left position and the lower right position, and the light emitting elements at the upper left position and the lower left position, and the upper right position and the lower right position By performing the same process as the process for obtaining the horizontal coordinate position for the light emitting elements of the above, the vertical coordinate position is obtained, thereby obtaining four Fourier-transformed light emitting element outputs and corresponding to the four infrared LEDs. The coordinate position of the liquid crystal screen to which the light receiving element is directed is calculated by logically calculating the output.
According to a fourth aspect of the present invention, in the invention according to the first, second, or third aspect, the logical operation of the outputs corresponding to the four infrared LEDs is a field programmable gate.
Array is inputted with four light emitting element outputs obtained by Fourier transform, and is set to perform logical operation as shown in the above table, whereby the coordinate position of the liquid crystal screen to which the light receiving element or photodiode is directed Is calculated.
According to a fifth aspect of the present invention, there is provided a cursor relative position detecting device that includes a light emitting element disposed on the liquid crystal screen side and detects coordinates on the liquid crystal screen to which the photodiode is directed by receiving light from the light emitting element. The photodiode has predetermined light receiving directivity distribution characteristics, and infrared LEDs as light emitting elements are arranged at the four corners of the liquid crystal screen, respectively, and light emitting means for emitting the infrared LEDs at the four corners at mutually different frequencies; Fourier arithmetic means for analyzing the combined output of the light emitting elements at the four corners by calculation and performing frequency decomposition by orthogonal transformation to obtain amplitude values as luminance outputs by the light emitting elements at the four corners, and light emission at the upper left position and the upper right position The luminance level difference between the light emitting elements at the upper left position and the upper right position when the photodiode is directed to each element is obtained. The difference between the luminance level received from the light emitting element at the upper left position when directed toward the upper left position and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position with a predetermined step width based on the difference in luminance level When the photodiode is actually directed in the direction of the light emitting element, the luminance level obtained from the light emitting elements at the current upper left position and the upper right position at this time is associated with a table of numerical examples obtained by dividing by the predetermined step width. Thus, the horizontal coordinate position is obtained, and the same processing is performed for the light emitting elements at the lower left position and the lower right position. Further, the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position are further processed. However, in order to obtain the vertical coordinate position by performing the same process as the process for obtaining the horizontal coordinate position, Field Programmable Gate Arr It is characterized by comprising: logic operation means for inputting four light emitting element outputs obtained by Fourier transform of y, performing logic operation as shown in the table, and calculating the coordinate position of the liquid crystal screen. .
Claim 6 of the present invention is a cursor relative position detection device that detects a coordinate on a liquid crystal screen to which a light receiving element faces by receiving a light from the light emitting element by arranging a light emitting element on the liquid crystal screen side, The light receiving element has predetermined light receiving directivity distribution characteristics, and infrared LEDs as light emitting elements are arranged at the four corners of the liquid crystal screen, respectively, and light emitting means for emitting the infrared LEDs at the four corners with mutually different phases; Fourier Fourier calculation means for analyzing the combined output of the light emitting elements at the four corners by calculating the function, and performing frequency decomposition by orthogonal transformation to obtain amplitude values as luminance outputs from the light emitting elements at the four corners, and the upper left position and the upper right position The luminance level difference between the light emitting elements at the upper left position and the upper right position when the light receiving element is directed to each of the light emitting elements is obtained. Dividing the luminance level received from the light emitting element at the upper left position when directed toward the upper left position and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position as a reference, and actually When the light receiving element is directed in the direction of the light emitting element, the luminance level obtained from the light emitting elements at the current upper left position and the upper right position at this time is associated with the table of numerical examples divided by the predetermined step width, thereby The same processing is performed for the light emitting elements at the lower left position and the lower right position, and the horizontal direction is also applied to the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position. In order to obtain the vertical coordinate position by performing the same process as the process for obtaining the coordinate position, the Field Programmable Gate Array is obtained by Fourier transform. Four enter the light emitting element output the performs logical operation so that the table is characterized in that a logic operation means for calculating the coordinate position of the LCD screen.
According to a seventh aspect of the present invention, there is provided a gun game machine comprising the cursor relative position detecting device according to the fifth or sixth aspect, wherein the light receiving element or the photodiode is built in and installed at the four corners of the liquid crystal screen. A gun controller that receives a light emission output of an infrared LED, and a gun game execution unit that displays a sighting device at a coordinate position of a liquid crystal screen aimed by the gun controller.
An eighth aspect of the present invention is characterized in that, in the seventh aspect of the present invention, the gun controller changes its orientation relative to the liquid crystal screen without changing the vertical and horizontal positions relative to the liquid crystal screen.
That is, in the present invention, infrared LEDs are arranged at four corners to emit light at different frequencies or phases, or to emit light in a time-sharing manner, and this is received by a photodiode, and the directivity distribution of a lens attached to the LED is monitored for each frequency. The ratio of light is converted into coordinates, and the ratio of the directivity distribution of the LED is regarded as a coordinate change.

  According to the above configuration, since the coordinates on the screen can be calculated only by the four infrared LEDs, the photodiode, and other substrates, the detection device can be manufactured at low cost. In addition, since the light emission frequency or phase of each infrared LED is made to emit light, it is possible to construct a highly reliable and robust device that is not easily influenced by other light sources. Similarly, when processing is performed by causing each infrared LED to emit light in a time-sharing manner, the reliability of the apparatus is also less likely to be affected by other light sources.

It is a figure for demonstrating the arrangement | positioning state of infrared LED of the cursor relative position detection method by this invention, and a single point optical sensor. It is a block diagram which shows the structure of the circuit of the cursor relative position detection apparatus by this invention. It is a figure for demonstrating an example of the light emission characteristic of LED, and the light reception characteristic of a photodiode. It is a figure which shows an example of the light emission output characteristic of four LED, and the light reception output of a photodiode. It is a figure for demonstrating the output example corresponding to each infrared LED of a photodiode when it each faces four corners of an LCD screen. It is a figure for demonstrating isolate | separating the output corresponding to each infrared LED of a photodiode, obtaining a difference, and memorize | storing beforehand. It is a flowchart for demonstrating the flow of a process from light reception of LED to the coordinate calculation of a screen. It is a perspective view which shows the external appearance of the gun game machine to which the cursor relative position detection apparatus by this invention is applied. It is a block diagram which shows embodiment of the circuit of a gun game machine.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view for explaining an arrangement state of an infrared LED and a single point light sensor of a cursor relative position detecting method according to the present invention.
Infrared LEDs (A) 1, (B) 2, (C) 3 and (D) 4 are arranged at the four corners of the LCD screen, and each infrared LED emits light forward. A photodiode 5 for receiving infrared rays from the respective infrared LEDs is arranged in front of the LCD screen. The present invention can determine the coordinate position of an LCD screen on which, for example, a gun controller (not shown) incorporating the photodiode 5 is facing. If the coordinate position can be obtained, the cursor can be displayed at the coordinate position of the LCD screen on which the aim is aimed and shown to the player.

  FIG. 2 is a block diagram showing a circuit configuration of the cursor relative position detecting apparatus according to the present invention. Four corner infrared LEDs (A) 1, (B) 2, (C) 3 and (D) 4 and a photodiode 5 are connected to a sensor processing board 6, and power supplies having different frequencies for light emission from the sensor processing board 6. Receive a signal. The photodiode 5 sends the combined infrared output received from the four infrared LEDs to the sensor processing board 6. A CPU 61, an IC (FPGA) 62, and a RAM 63 are mounted on the sensor processing board 6. The CPU 61 controls the supply of power signals of different frequencies to the infrared LEDs, receives the combined infrared output received by the photodiode 5, and calculates the output of each infrared LED. The IC (FPGA) is a field programmable gate array, and a logic function is incorporated in advance so as to turn on and off the intersection corresponding to each pixel of the LCD screen in accordance with the output level of each infrared LED. The relative coordinate position of the LCD screen is calculated by a logical operation corresponding to the output of. This coordinate position is supplied to the game machine circuit 10 as coordinate data 11.

FIG. 3 is a diagram for explaining an example of the light emission characteristic of the LED and the light reception characteristic of the photodiode.
FIG. 3A shows an example of the light emission directivity of the infrared LED, and shows the light emission directivity characteristic of the viewing angle as indicated by 103 with respect to the light emission point 104. The light emission output waveform has characteristics similar to a sine waveform as indicated by 102, and the light emission output is the largest in the direction perpendicular to the plane (90 °) where the light emitting point 104 is disposed (this plane is 0 °). Thus, the smaller the angle, the smaller the light emission output with characteristics similar to a sine waveform.
In FIG. 3B, the light emitting directional characteristics 101 and 201 of the infrared LEDs (A) 1 and (B) 2 are set in contact with each other, whereas the center of the light receiving characteristic 501 of the photodiode 5 is the infrared LED (A) 1. It is in a state of facing. This characteristic diagram shows the state of light reception of the photodiode 5 with respect to the light emission directivity characteristic of only the infrared LEDs (A) 1 and (B) 2 in order to make the principle of light reception easy to understand.

Assuming that the angle connecting the photodiode 5 and the infrared LED (A) 1 is θ ₀ = 0, the photodiode 5 emits light from the infrared LED (A) 1 that emits light with the power source of frequency f ₁ in the angle range of (θ ₁ + θ ₂ ). Receive the output. Further, the photodiode 5 receives the light emission output from the infrared LED (B) 2 that emits light by the power source of the frequency f ₂ in the angle range of (θ ₃ + θ ₄ ). The photodiode 5 obtains an output obtained by synthesizing the light emission outputs from the infrared LED (A) 1 and the infrared LED (B) 2.

FIG. 4 is a diagram showing an example of the light emission output characteristics of four infrared LEDs and the light reception output of a photodiode.
When the infrared LED (A) 1 is caused to emit light at the frequency f, it is a waveform diagram when the infrared rays (B) 2, (C) 3 and (D) 4 are caused to emit light at different frequencies. Shows the synthesized output. The output of the photodiode is decomposed for each frequency to calculate the reception sensitivity of each infrared LED, and the coordinates of the LCD screen can be obtained by coordinate conversion from the ratio of each infrared LED reception sensitivity. The above different frequencies correspond to f ₁ , f ₂ , f ₃ , and f ₄ in FIG. 4 and are frequencies that do not overlap each other by an integral multiple. However, x1 is good.

5A and 5B are diagrams for explaining the principle of obtaining the coordinate position of the LCD screen from the photodiode output, and FIG. 5A is an output example of the photodiode corresponding to each infrared LED when facing the four corners of the LCD screen. FIG. 5B shows that the output corresponding to each infrared LED of the photodiode is separated and a difference is obtained and stored in advance.
5A (a), (b), (c) and (d) show the positions of the photodiodes where the photodiodes are infrared LEDs (A), (B), (C) and (D) (upper left, upper right, lower left and lower right), respectively. The brightness levels of the infrared LEDs (A), (B), (C) and (D) received by the photodiode at that time are shown.
For example, at the position of FIG. 5A (a), the luminance level by the infrared LED (A) is the maximum, the luminance level by the infrared LEDs (B) and (C) is about the middle, and the luminance level by the infrared LED (D) is It becomes the lowest. It can be seen that the brightness level of each infrared LED is different corresponding to the LCD screen position to which the photodiode is directed.

Next, FIG. 5B will be described.
Considering a calculation example in the horizontal direction (X-axis) of the LCD screen, when the photodiode is directed to the upper left of the LCD screen, the luminance level of each infrared LED obtained is shown in FIG. 5B (a). And the brightness level by the infrared LED (B), and the brightness level by the infrared LED (C) and the brightness level by the infrared LED (D).
Here, paying attention to the infrared LED (A) and the infrared LED (B), as shown in FIG. 5B (b), when the photodiode is directed to the upper left of the LCD screen, the luminance level by the infrared LED (A) and the infrared LED (B ) To obtain the luminance level difference (α = B−A) (1). Further, the difference (β = B−A) (2) between the luminance level by the infrared LED (A) and the luminance level by the infrared LED (B) when the photodiode is directed to the upper right of the LCD screen is obtained. Then, the obtained α and β are stored.

Next, when the photodiode is directed to the left from the middle of the infrared LED (A) and the infrared LED (B) on the LCD screen, the luminance levels of the infrared LEDs (A) to (D) are as shown in FIG. 5B (c). The brightness level by the infrared LED (A) and the brightness level by the infrared LED (B) are separated from the brightness level by the infrared LED (C) and the brightness level by the infrared LED (D).
Here, the difference between the luminance level by the infrared LED (A) and the luminance level by the infrared LED (B) (γ = B−A) is obtained,
POS = (γ−α) / (β−α) (3)
The horizontal coordinate position (POS) of the LCD screen can be obtained by calculating.

左上にホトダイオードが向いたときの赤外線ＬＥＤ（Ａ）による輝度レベルを「１２０」，赤外線ＬＥＤ（Ｂ）による輝度レベルを「４０」とすると、αは（１）式より「−８０」である。また、右上にホトダイオードが向いたときの赤外線ＬＥＤ（Ａ）による輝度レベルを「３０」，赤外線ＬＥＤ（Ｂ）による輝度レベルを「１００」とすると、αは（２）式より「７０」である。これらを基準値とする。
赤外線ＬＥＤ（Ａ）および赤外線ＬＥＤ（Ｂ）による輝度レベルが「３０」「１００」，「３９」「９４」・・・「１１１」「４６」，「１２０」「４０」である場合、αは「７０」「５５」・・・「−６５」「−８０」となり、αのステップ幅は「１５」となり、それぞれを「１」「０．９」・・・「０．１」「０」の１０分割としている。「１」は赤外線ＬＥＤ（Ｂ）に最も近い１／１０の範囲であり、「０．９」は２番目に近い１／１０の範囲であり、同様にして「０」は赤外線ＬＥＤ（Ａ）に最も近い１０番目の１／１０の範囲に含まれる座標である。 Table 1 shows examples of coordinate positions (coordinate ranges) when the horizontal direction of the LCD screen is divided into ten.
[Table 1]

When the luminance level by the infrared LED (A) when the photodiode is directed to the upper left is “120” and the luminance level by the infrared LED (B) is “40”, α is “−80” from the equation (1). Further, when the luminance level by the infrared LED (A) when the photodiode is directed to the upper right is “30” and the luminance level by the infrared LED (B) is “100”, α is “70” from the equation (2). . These are used as reference values.
When the luminance levels by the infrared LED (A) and the infrared LED (B) are “30” “100”, “39” “94”... “111” “46”, “120” “40”, α is “70” “55”... “−65” “−80” and α step width becomes “15”, and “1” “0.9”... “0.1” “0”. 10 divisions. “1” is the range of 1/10 closest to the infrared LED (B), “0.9” is the range of 1/10 closest to the second, and similarly “0” is the infrared LED (A). The coordinates included in the tenth 1/10 range closest to.

In the above example, the example of obtaining the coordinate position in the horizontal direction when the luminance by the infrared LEDs (A) and (B) is used has been described, but the same is obtained by using the luminance by the infrared LEDs (C) and (D). If calculation processing is performed, the accuracy of the coordinate position in the horizontal direction can be further increased.
Furthermore, if the coordinate processing in the vertical direction (Y-axis) is also used for calculating the horizontal coordinate position, the vertical coordinate position can be similarly determined.

FIG. 6 is a flowchart for explaining the flow of processing from the reception of the LED to the calculation of the coordinates of the screen.
Assuming that the frequencies of the different power sources of the infrared LEDs (A) 1, (B) 2, (C) 3 and (D) 4 are f _{1 to} f ₄ , blinking starts at these frequencies (step (hereinafter referred to as “S”). ") 01).
The photodiodes 5 which are infrared light receiving diodes simultaneously receive the light emission outputs of the infrared LEDs (A) 1, (B) 2, (C) 3 and (D) 4 (S02).
Next, these four combined outputs are analyzed by calculation of a Fourier function, and frequency decomposition is performed by orthogonal transformation to obtain luminance outputs by infrared LEDs (A) 1, (B) 2, (C) 3, and (D) 4, respectively. An amplitude value is obtained (S03). That is, the ratio of the luminance output received from each infrared LED is obtained.
Further, using the amplitude values of the four luminance levels obtained, calculation processing as described in FIG. 5B and Table 1 is performed, so that the FPGA (Field Programmable Gate Array) is changed to Table 1 (infrared LEDs (A) in the horizontal direction and ( By setting the logic operation so as to be according to B)), the coordinates of the LCD screen corresponding to the ratio of the luminance level by each infrared LED are obtained from the output of the FPGA (S04).

FIG. 7 is a perspective view showing the appearance of a gun game machine to which the cursor relative position detecting device according to the present invention is applied.
A monitor 23 is disposed on the front, and speakers 22 and 22 are provided on the left and right of the monitor 23. Infrared LEDs 41, 42, 43 and 44 are arranged at the four corners of the monitor 23. The emission directivity characteristics of the infrared LEDs are the same, and the light emission frequencies are different.
A panel having a sub-monitor 24, a coin insertion portion 27, a direction button 29, and an enter button 28 is arranged at a certain distance from the monitor 23, and a 1P gun controller 25 and a 2P gun controller 26 are installed on the left and right sides thereof. Each of the 1P gun controller 25 and the 2P gun controller 26 includes a phototransistor for receiving light emitted from the infrared LED. The movements of the gun controllers 25 and 26 do not incorporate elements of left and right and up and down movements (assuming that the vertical and horizontal positions with respect to the monitor screen of the gun controller hardly change), and the monitor screens in the orientation with respect to the monitor screen 23 of the gun controllers 25 and 26 The upper image position is obtained.

FIG. 8 is a block diagram showing an embodiment of the circuit of the gun game machine.
When a coin is inserted from the coin insertion unit 27, the coin is detected, and the information is transmitted to the CPU 36 via the coin related device 33 and the input / output control unit 35. Setting values such as the number of coins inserted, that is, the number of coins and the number of plays are stored in the backup memory 34.
When the determination (start) button of the operation unit 31 is pressed, information on the game start is sent to the CPU 36 via the input / output control unit 35.
The cursor relative position detection device 52 is composed of four corners including infrared LEDs 41 to 44, a photodiode, and a sensor processing board on which an IC (FPGA), CPU and RAM are mounted.
When the CPU 36 receives the play start information, the CPU 36 passes control to the gun position coordinate acquisition control unit 36c. The gun position coordinate acquisition control unit 36c instructs the cursor relative position detection device 52 via the gun control unit 51 to emit infrared LEDs arranged at the four corners of the monitor 23 at respective frequencies. Also, the coordinate position information of the monitor screen obtained by activating the photodiode to receive light emitted from each infrared LED and calculating by the CPU and IC in the cursor relative position detection device is received.

The gun game execution unit 36b displays a cursor at the obtained image position, and displays the coordinate position of the monitor aimed by the gun controller as a sighting device.
When there is a trigger switch (installed in the operation unit 31) on signal input (not shown) from the 1P and 2P gun controllers 25 and 26, the input signal is sent to the CPU 36 via the input / output control unit 35.
The gun game execution unit 36b performs the process in which the shooting hits the coordinate position of the monitor described above by this ON signal.

The ROM 38 stores a control program for controlling the entire gun game machine housing, a gun game program for executing the gun game, a gun position coordinate acquisition program for controlling the cursor relative position detection device, and data necessary for the gun game machine. .
The RAM 37 is used as a work area for calculations and processing performed by the game control unit 36a and the like, and temporarily stores information generated by the processing.
The CPU 36 reads the control program, gun game program, and gun position coordinate acquisition program from the ROM 38, thereby realizing the functions of the game control unit 36a, gun game execution unit 36b, and gun position coordinate acquisition control unit 36c.

  The game control unit 36a performs monitoring such as insertion of coins in a standby state before the start of the game, control of lighting and blinking of an unillustrated electric decoration, control after the game ends, and the like. The gun game execution unit 36b receives control from the game control unit 36a after inserting coins, acquires image position information while controlling the cursor relative position detection device, and controls display of the gun game screen including the cursor. Then proceed with the game.

In the above embodiment, each infrared LED is operated by a power signal having a different frequency as a method for identifying each infrared LED. In addition, by changing the phase of the power signal emitted by each infrared LED, It is also possible to identify the light output.
In addition, each infrared LED may emit light in a time-sharing manner, and it may be configured to identify from which infrared LED light is output based on the light reception timing of the light receiving element. In such a configuration, since the outputs from all the infrared LED emissions are not combined, the calculation for separating the combined output of each infrared LED by Fourier transform becomes unnecessary.

  This is a coordinate position detection device for a monitor screen mounted on a gun game machine or the like.

1 LED (A)
2 LED (B)
3 LED (C)
4 LED (D)
DESCRIPTION OF SYMBOLS 5 Photodiode 6 Sensor processing board 10 Game machine circuit 11 Coordinate 21 Gun game machine 22 Speaker 23 Monitor 24 Sub monitor 25 1P gun controller 26 2P gun controller 27 Coin insertion part 28 Determination button 29 Direction button 33 Coin related apparatus 34 Backup memory 35 Input / output Control unit 36, 61 CPU
37 RAM
38 ROM
39 Image processing unit 51 Gun control unit 52 Cursor relative position detection device 62 IC (FPGA)
63 RAM
101, 201 Light emission directivity characteristics 102 Light emission output waveform 501 Light reception characteristics

Claims (8)

A method of detecting coordinates on a liquid crystal screen to which a photodiode is directed by arranging a light emitting element on a liquid crystal screen side and receiving light from the light emitting element;
The photodiode has a predetermined light-receiving directivity distribution characteristic, and infrared LEDs as light emitting elements are arranged at four corners of the liquid crystal screen,
The four corner infrared LEDs emit light at mutually different frequencies,
The photodiode simultaneously receives the output from the light emitting elements at the four corners,
Analyzing the combined output of the light emitting elements at the four corners by calculating a Fourier function, and performing frequency decomposition by orthogonal transformation to obtain amplitude values that are luminance outputs from the light emitting elements at the four corners,
Furthermore, the luminance level difference between the upper left position and the upper right position when the photodiode is directed to the upper left position and the upper right position, respectively, is obtained, and the upper left position is determined based on the respective luminance level and luminance level difference. The luminance level received from the light emitting element at the upper left position when facing the light source and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position are divided by a predetermined step width, and the photodiode is actually directed toward the light emitting element. When it is directed, the horizontal coordinate position is obtained by associating the luminance level obtained from the light emitting elements at the current upper left position and the upper right position at this time with a table of numerical examples divided by the predetermined step width. The same processing is performed for the light emitting elements at the position and the lower right position, and further the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position. By obtaining the vertical coordinate position by performing the same process as the process for obtaining the horizontal coordinate position for the child, four light-emitting element outputs obtained by Fourier transform are obtained, and outputs corresponding to the four infrared LEDs are obtained. A cursor relative position detection method using an infrared LED and a single point light sensor, wherein the coordinate position of the liquid crystal screen to which the photodiode is directed is calculated by logical calculation. A method of detecting coordinates on a liquid crystal screen to which a light receiving element is directed by arranging a light emitting element on a liquid crystal screen side and receiving light from the light emitting element,
The light receiving element has predetermined light receiving directivity distribution characteristics, and infrared LEDs as light emitting elements are arranged at four corners of the liquid crystal screen,
The four corner infrared LEDs emit light with mutually different phases,
The light receiving elements simultaneously receive outputs from the light emitting elements at the four corners,
Analyzing the combined output of the light emitting elements at the four corners by calculating a Fourier function, and performing frequency decomposition by orthogonal transformation to obtain amplitude values that are luminance outputs from the light emitting elements at the four corners,
Further, the luminance level difference between the upper left position and the upper right position when the light receiving element is respectively directed to the upper left position and the upper right position is obtained, and the upper left position is determined based on the respective luminance level and luminance level difference. The luminance level received from the light emitting element at the upper left position when directed toward the position and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position are divided by a predetermined step width, and the light receiving element is actually the light emitting element The horizontal coordinate position is obtained by associating the luminance level obtained from the light emitting elements at the current upper left position and upper right position at this time with the table of numerical examples divided by the predetermined step width. The same processing is performed for the light emitting elements at the lower left position and the lower right position, and for the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position. By obtaining the coordinate position in the vertical direction by performing the same process as the process for obtaining the coordinate position in the horizontal direction, four light-emitting element outputs obtained by Fourier transform are obtained, and the output corresponding to the four infrared LEDs is logically calculated. A cursor relative position detection method using an infrared LED and a single point light sensor, wherein a coordinate position of the liquid crystal screen to which the light receiving element is directed is calculated. A method of detecting coordinates on a liquid crystal screen to which a light receiving element is directed by arranging a light emitting element on a liquid crystal screen side and receiving light from the light emitting element,
The light receiving element has predetermined light receiving directivity distribution characteristics and arranges infrared LEDs at four corners of the liquid crystal screen,
By emitting the infrared LEDs at the four corners in a time-sharing manner and receiving them with the light receiving element, an output corresponding to the infrared LEDs at the four corners is obtained,
Further, the luminance level difference between the upper left position and the upper right position when the light receiving element is respectively directed to the upper left position and the upper right position is obtained, and the upper left position is determined based on the respective luminance level and luminance level difference. The luminance level received from the light emitting element at the upper left position when directed toward the position and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position are divided by a predetermined step width, and the light receiving element is actually the light emitting element The horizontal coordinate position is obtained by associating the luminance level obtained from the light emitting elements at the current upper left position and upper right position at this time with the table of numerical examples divided by the predetermined step width. The same processing is performed for the light emitting elements at the lower left position and the lower right position, and for the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position. By obtaining the coordinate position in the vertical direction by performing the same process as the process for obtaining the coordinate position in the horizontal direction, four light-emitting element outputs obtained by Fourier transform are obtained, and the output corresponding to the four infrared LEDs is logically calculated. A cursor relative position detection method using an infrared LED and a single point light sensor, wherein a coordinate position of the liquid crystal screen to which the light receiving element is directed is calculated. The logical operation of the outputs corresponding to the four infrared LEDs is set such that the Field Programmable Gate Array is inputted with the four light emitting element outputs obtained by Fourier transform, and the logical operation is performed as shown in the above table. By
4. The cursor relative position detection method using an infrared LED and a single point light sensor according to claim 1, wherein the coordinate position of the liquid crystal screen to which the light receiving element or the photodiode is directed is calculated. A cursor relative position detection device that detects a coordinate on a liquid crystal screen to which a photodiode is directed by arranging a light emitting element on a liquid crystal screen side and receiving light from the light emitting element,
The photodiode has a predetermined light-receiving directivity distribution characteristic, and infrared LEDs as light emitting elements are arranged at four corners of the liquid crystal screen,
A light emitting means for emitting light from the four corner infrared LEDs at mutually different frequencies;
Fourier calculation means for analyzing the combined output of the light emitting elements at the four corners by calculating a Fourier function, and performing frequency decomposition by orthogonal transformation to obtain amplitude values that are luminance outputs from the light emitting elements at the four corners,
The luminance level difference between the upper left position and the upper right position when the photodiode is directed to the upper left position and the upper right position, respectively, is obtained. The luminance level received from the light emitting element at the upper left position when directed toward the light intensity level received from the light emitting element at the upper right position when directed toward the upper right position is divided by a predetermined step width, and the photodiode is actually directed toward the light emitting element. The coordinate level in the horizontal direction is obtained by associating the luminance level obtained from the light emitting elements at the current upper left position and upper right position at this time with the table of numerical examples divided by the predetermined step width, and the lower left position. The same process is applied to the light emitting elements at the lower right position and the light emitting elements at the upper left position and the lower left position, and the light emitting elements at the upper right position and the lower right position. To determine the coordinate position of the vertical direction by performing the same process of obtaining the coordinate position of the lateral direction and,
Field Programmable Gate Array inputs four light emitting element outputs obtained by Fourier transform, performs logical operation as shown in the table, and calculates logical position of the liquid crystal screen;
A cursor relative position detecting device using an infrared LED and a single point light sensor. A cursor relative position detecting device that arranges a light emitting element on the liquid crystal screen side and detects coordinates on the liquid crystal screen to which the light receiving element is directed by receiving light from the light emitting element,
The light receiving element has predetermined light receiving directivity distribution characteristics, and infrared LEDs as light emitting elements are arranged at four corners of the liquid crystal screen,
Light emitting means for emitting the infrared LEDs at the four corners in mutually different phases;
Fourier calculation means for analyzing the combined output of the light emitting elements at the four corners by calculating a Fourier function, and performing frequency decomposition by orthogonal transformation to obtain amplitude values that are luminance outputs from the light emitting elements at the four corners,
The luminance level difference between the light emitting elements at the upper left position and the upper right position when the light receiving elements are respectively directed to the light emitting elements at the upper left position and the upper right position is obtained, and the upper left position is determined based on the luminance level and the luminance level difference at this time. The luminance level received from the light emitting element at the upper left position when facing the light source and the luminance level received from the light emitting element at the upper right position when directed toward the upper right position are divided by a predetermined step width, and the light receiving element is actually in the direction of the light emitting element By associating the luminance level obtained from the current upper left position and right upper position light emitting elements at this time with a table of numerical examples divided by the predetermined step width, the horizontal coordinate position is obtained, The same process is applied to the light emitting elements at the lower left position and the lower right position, and the light emitting elements at the upper left position and the lower left position and the light emitting elements at the upper right position and the lower right position are also laterally arranged. To determine the coordinate position of the vertical direction by performing the same process of obtaining the coordinate position,
Field Programmable Gate Array inputs four light emitting element outputs obtained by Fourier transform, performs logical operation as shown in the table, and calculates logical position of the liquid crystal screen;
A cursor relative position detecting device using an infrared LED and a single point light sensor. A gun game machine comprising the cursor relative position detection device according to claim 5 or 6,
A gun controller that incorporates the light receiving element or photodiode and receives the light emission output of infrared LEDs installed at the four corners of the liquid crystal screen;
A gun game machine comprising a gun game execution unit for displaying an sighting device at a coordinate position of a liquid crystal screen aimed by the gun controller.   8. The gun game machine according to claim 7, wherein the gun controller changes its orientation with respect to the liquid crystal screen without changing the vertical and horizontal positions with respect to the liquid crystal screen.

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