JPS594143B2 - Shyagekirenshiyuusouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shooting practice device in which a target is projected on a cathode ray tube screen and detected by a gun. This is an attempt to provide a shooting practice device that is effective.

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a background 2 is displayed in a first color on the screen of a cathode ray tube 1, and a fixed display 3 such as a house is displayed in a second color.
Furthermore, 15 moving targets 4 are released in the third color. This target 4 is constructed so that when it is over a fixed display 3 such as a house, it is hidden in its shadow. The details will be described later. The light from this target 4 is detected by a gun 5, and when detected, the target 4 is made to disappear. As shown in FIG. 2, the gun 5 is provided with a filter 7 that allows only the color of the 20 targets 4 to pass through an optical system 6, and a phototransistor 8 that is a photoelectric conversion element that receives the light that has passed through the filter T. . The signal obtained at the emitter of this phototransistor 8 is ANDed via an amplifier 9.
25 is added to one terminal of gate 10. This AND
The other terminal of the gate 10 is connected to a movable terminal of a changeover switch 11 and grounded via a resistor 12. One fixed terminal of the changeover switch 11 is grounded, and the other fixed terminal is connected to a DC power supply terminal via a capacitor 13.
It is set to 0. The output of the above AND gate is the counter 15
The output of the counter 15 is displayed on the display means 17 via the decoder 16. The output of AND gate 10 is further applied to flip-flop 18 to toggle 35 the state of flip-flop 18. The output of flip-flop 18 is applied to one input terminal of AND gate 19 and one input terminal of AND gate 20. A signal from the target 4 is applied from a terminal 21 to the other input terminal of the AND gate 20. The output of the AND gate 20 is applied via an amplifier 22 to the other input terminal of the NAND gate 19. Further, the output of the AND gate 20 and the signal of the display 3 indicating the house added to the terminal 23 are N
is added to the input terminal of the AND gate 24, and this NAND
The output of gate 24 and the output of AND gate 20 are ANDed.
It is applied to the output terminal of gate 25. AND gate 26
The background 2 signal is added to the terminal 27, and the NA
A signal obtained by inverting the house display signal applied to the output of the ND gate 19 and the terminal 23 by an inverter 34 is applied. The output signals of AND gates 25 and 26 and the signal at terminal 23 are combined via resistors 28, 29 and 30, respectively, and output to output terminal 32 via amplifier 31. The output signal is displayed on the cathode ray tube 1. In the above circuit, for example, portions 6 to 13 are provided on the gun 5 side, and other portions are provided on the cathode ray tube 1 side. The selector switch 11 works in conjunction with the trigger of the gun. When the trigger is pulled, the switch is switched to the capacitor 13 side, charging current flows through the capacitor 13 and resistor 12, and the pulse signal enters the N1 gate 10. There is. This pulse signal is applied to flip-flop 18 through capacitor 33 as a reset signal. Next, the operation of this circuit will be explained.

Now, if the trigger of the gun is not pulled or the prescribed light does not enter the phototransistor 8, the AND gate 10
There is no output, and the flip-flop 18 is not inverted. At this time, the output state of the flip-flop 18 is 61", so a target signal is output to the AND gate 20. This target signal also enters the NAND gate 19, so the NAND
A signal obtained by inverting the target signal is output from the gate 19.
A signal that is an inversion of the house display signal is output to the inverter 34.
This is applied to AND gate 26. As a result. AN
A signal obtained by removing the house display signal and the target signal from the background signal is obtained at the D gate 26. On the other hand, the target signal and the house display signal are applied to the NAND gate 24, so when the target and house displays overlap even partially, a signal that inverts the overlapping part is output to the output terminal. When not, the state is "1". This signal is applied to the AND gate 25, so when the target and house displays overlap even partially, the target signal for the part that does not overlap with the house display is output to the output terminal of the AND gate 25, When the displays do not overlap, the entire target signal is output. When these signals are combined via resistors 28, 29, and 30, the image shown in FIG. 1 is obtained when the target 4 overlaps the house display 3. At this time, the colors of each display do not overlap each other,
The color comes out as is. Next, when the trigger of the gun is pulled, and at that moment light from the target 4 passes through the filter 7 and enters the phototransistor 8, a signal is input from the emitter of the phototransistor 8 to the AND gate 10, and the selector switch 11 is activated. Since it is on the capacitor 13 side, a pulse signal is input to the other terminal of the AND gate 10.

Therefore, an output is provided to AND gate 10 which inverts flip-flop 18. As a result of the inversion, the output of the flip-flop 18 becomes 0'', and the NAND gate 19 and the AND gate 2
At 0, there will be no output. As a result, no target signal is output to the AND gate 25. A signal obtained by subtracting the house display signal from the background signal is output to the AND gate 26, and the house display signal at the terminal 23 is added to this signal to obtain a screen with no target, and the gun 5 detects the target 4. I understand. In the above embodiment, targets, backgrounds, houses, etc. are displayed in different colors,
The target is detected by the filter 7, but each of the three above is modulated in brightness at a different frequency, and the emitter of the phototransistor 8 and the AN are used instead of the filter 7.
A similar operation can be achieved even if a band pass filter is provided between the D gates 10 to detect only the target frequency.

Further, the display 3 such as a house may be a moving display instead of a fixed display. As described above, according to the present invention, it is possible to configure the target so that it is hidden behind a display such as a house,
Moreover, if the target is detected accurately with a gun, the target can be erased, making it possible to obtain a shooting practice device that requires a high level of skill.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a target practice device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of the same device. 1...Cathode ray tube, 2...Background, 3...
...Display of houses, etc., 4...Target, 5...
...Gun, 7...Filter, 8...Phototransistor, 10...AND gate, 11
......Switch, 18...Flip-flop, 19,24...NAND gate, 2
0, 25, 26...AND gate, 34...
...Inverter, 21...Target signal input terminal, 23...Display signal input terminal for house, etc., 27...
...Background signal input terminal, 28, 29, 30...
・Combined resistance, 32... Output terminal.

Claims (1)

[Claims] 1. A cathode ray tube screen is configured to project a background, a house, etc., and a target, and the target is detected by a gun equipped with a light receiving section;
a detection means whose output is inverted by an AND output of a signal representing pulling the trigger of the gun and a signal indicating the detection of the target by the light receiving section; and a target display for displaying the target. target display control means for controlling the transmission of the signal by the output of the detection means and for blocking the transmission of the target display signal when the inverted output is generated; and the target display signal and the house, etc. an overlap detection means for detecting an overlapping portion with a display signal of a house, etc. for displaying a display signal of a house, etc.; and an output representing the overlapped portion from the overlap detection means to detect a target display signal of the output of the target projection control means. an overlapping projection control means for controlling transmission of the target and preventing transmission of the display signal of the target in the overlapping portion, and displaying the background by the output of the target projection control means and the display signal of the house, etc. background projection control means for controlling the transmission of a background display signal for the purpose of displaying the target projection control means and preventing transmission of the background display signal at a portion where the display signal is present, such as the output of the target projection control means or the above-mentioned house; and a synthesizing means for synthesizing a display signal of a house, etc., a target display signal output from the overlapping projection control means, and a background display signal output from the background projection control means, and supplying the synthesized signal to the cathode ray tube. shooting practice equipment.