JP2011161259A - Input device for processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an input device simple and inexpensive as compared with an input device using an acceleration switch or a piezoelectric gyro, by detecting the displacement acceleration of a racket-shaped input using a piezoelectric buzzer element. <P>SOLUTION: Two racket-shaped input devices 32 are used to play a battle game. The racket-shaped input devices 32 include the piezoelectric buzzer elements 66, wherein when the racket input devices 32 are displaced, an acceleration correlation electric signals generated in the piezoelectric buzzer element 66 are processed by a MCU (Micro-Controller Unit) 50 to obtain acceleration data, and the acceleration data is transmitted as a transmission code from an infrared LED 34. A game processor detects acceleration data from a receiving code received by an infrared light receiving element, and controls the movement of a ball of a table tennis game on a television monitor based on the acceleration data. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an input device for a processor, and in particular, for example, a displacement acceleration when an operator displaces the input device in a space is input to a computer, a data processor, a game processor, etc. (collectively referred to as “processor”). The present invention relates to an input device for a processor.

  Various input devices of this type have been proposed particularly in the field of games.

  However, many of the conventional acceleration input devices for processors use an acceleration switch that is turned on or off when the displacement acceleration reaches a certain level or below, and thus has a drawback that the structure is complicated and easily damaged.

  In order to eliminate such drawbacks, it may be possible to use a piezoelectric gyro sensor, but this piezoelectric gyro is expensive.

  SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide an input device for a processor that can input displacement acceleration to the processor with a simple and inexpensive configuration.

  An input device for a processor according to the present invention is an input device in which an operator displaces in space and gives a signal correlated with the acceleration of the displacement as an input signal of the processor. The piezoelectric buzzer element and the input device are displaced. An input device for a processor comprising signal output means for giving an acceleration correlation signal to the processor based on an acceleration correlation electric signal generated in the piezoelectric buzzer element when the operation is performed.

  The signal output means includes digital signal creation means for creating a digital signal according to the acceleration correlation electric signal, and digital signal transmission means for transmitting the digital signal to the processor.

The digital signal transmission means includes wireless signal transmission means for wirelessly transmitting the digital signal to the processor.
In the embodiment, the piezoelectric buzzer element includes a metal plate and a piezoelectric ceramic plate provided on the metal plate, and the piezoelectric buzzer element is disposed so that the main surface of the piezoelectric ceramic plate is orthogonal to the first axis.

  When two piezoelectric buzzer elements are provided, the second piezoelectric buzzer element is arranged so that the main surface of the piezoelectric ceramic plate is orthogonal to the second axis orthogonal to the first axis, and the signal output means is an acceleration correlation electric current of the piezoelectric buzzer element. Based on the signal and the acceleration correlation electric signal of the second piezoelectric buzzer element, the acceleration correlation signal in the first axis direction and the acceleration correlation signal in the second axis direction are output to the processor.

  When three piezoelectric buzzer elements are provided, the third piezoelectric buzzer element is arranged so that the principal surface of the piezoelectric ceramic plate is orthogonal to the third axis orthogonal to the first axis and the second axis, respectively, and the signal output means is a piezoelectric buzzer. Based on the acceleration correlation electrical signal of the element, the acceleration correlation electrical signal of the second piezoelectric buzzer element, and the acceleration correlation signal of the third piezoelectric buzzer element, the acceleration correlation signal in the first axis direction, the acceleration correlation signal in the second axis direction, and the third The axial correlation signal is output to the processor.

  The processor includes an image correlation unit that receives the acceleration correlation signal from such a processor input device and causes the image displayed by the image display unit to change according to the acceleration correlation signal.

Action

  The input device is moved in the three-dimensional space by the operator. For example, in the case of a bat type input device or a racket type input device, the operator shakes it. Accordingly, the input device is displaced, and an acceleration correlation electric signal is generated between the electrodes of the piezoelectric buzzer element according to the displacement.

  A processing device such as an MCU (microcontroller unit) provided in the input device outputs a rectangular wave signal from its output port and applies it to one electrode of the piezoelectric buzzer element, and then from the other electrode of the piezoelectric buzzer element to the input port. Receive a signal. The MCU converts an acceleration correlation electric signal included in a signal from the piezoelectric buzzer element input to the input port into acceleration data.

  The signal output means includes this MCU and, for example, an infrared LED, and the MCU drives the infrared LED according to the acceleration data. Therefore, an infrared signal of acceleration data is output from the infrared LED.

  For example, the processor demodulates a light reception signal from an infrared light receiving unit that receives the infrared signal to obtain acceleration data. Then, for example, the display image is changed according to the acceleration data.

  According to the present invention, since the piezoelectric buzzer element is used, there is no movable part, the structure is simple, and there is no fear of failure. Moreover, the piezoelectric buzzer element is already mass-produced and is very inexpensive. Therefore, it is very advantageous compared to an input device using an acceleration switch or a piezoelectric gyro.

  Other objects, features and advantages of the present invention will become more apparent from the detailed description of the following examples given in conjunction with the accompanying drawings.

It is an illustration figure which shows the whole structure of the sensation table tennis game device of one Example of this invention. It is an illustration figure which shows an example of the game screen displayed on the television monitor in FIG. 1 Example. It is a block diagram which shows FIG. 1 Example. It is an illustration figure which shows the internal structure of the racket type input device in FIG. 1 Example. It is a circuit diagram of a racket type input device. It is each part waveform diagram which shows operation | movement of a racket type input device. It is a flowchart which shows the whole operation | movement of FIG. 1 Example. It is an illustration figure which shows the state thru | or state transition of FIG. 1 Example. FIG. 4 is a flowchart showing the overall operation of the MCU in the embodiment in FIG. 3. It is a flowchart which shows the specific operation | movement of the acceleration detection process shown in FIG. It is a flowchart which shows the specific operation | movement of the code transmission process in FIG. 9 Example. FIG. 9 is a flowchart showing a specific operation of code reception processing by the game processor in the embodiment in FIG. 7; FIG. 8 is a flowchart showing a specific operation of toss preprocessing by the game processor in the embodiment in FIG. 7; FIG. 8 is a flowchart showing a specific operation of the toss processing by the game processor in the embodiment in FIG. 7; FIG. 9 is a flowchart showing a specific operation of the rally process by the game processor in the embodiment in FIG. 7. FIG. 8 is a flowchart showing a specific operation of ball coordinate calculation processing by the game processor in the embodiment in FIG. 7; FIG. 9 is a flowchart showing a specific operation of point processing by the game processor in the embodiment in FIG. 7. It is an illustration figure which shows an example of arrangement | positioning in the case of using two piezoelectric buzzer elements. It is a circuit diagram which shows the principal part of the racket type | mold input device using two piezoelectric buzzer elements. FIG. 10 is a flowchart showing a specific operation of the acceleration detection process shown in FIG. 9 when two piezoelectric buzzer elements are used. It is a flowchart which shows the specific operation | movement of the acceleration detection process following FIG. It is a flowchart which shows the specific operation | movement of the acceleration detection process following FIG. It is a flowchart which shows the specific operation | movement of the process during toss by the game processor in FIG. 7 Example in the case of using two piezoelectric buzzer elements. It is an illustration figure which shows the speed | rate perpendicular | vertical to the racket surface of a ball | bowl, the speed | rate in a direction horizontal to a racket surface, and a rotation angular velocity in the case of using two piezoelectric buzzer elements. It is a flowchart which shows the specific operation | movement of the rally process by the game processor in the FIG. 7 Example in the case of using two piezoelectric buzzer elements. It is a flowchart which shows the specific operation | movement of the ball coordinate calculation process by the game processor in the FIG. 7 Example in the case of using two piezoelectric buzzer elements. It is an illustration which shows an example of arrangement | positioning in the case of using three piezoelectric buzzer elements.

  Referring to FIG. 1, a sensation table tennis game apparatus 10, which is an example of use of an input device using a piezoelectric buzzer element according to the present invention, includes a game machine 12. Is given. However, it may be replaced with the battery 16. The game machine 12 is further connected to the AV terminal 18 of the television monitor 20 through the AV cable 22.

  The game machine 12 also includes a housing, on which a power switch 24 is provided, and operation keys 26 and 28 are provided. The selection key 26 is used, for example, to move a cursor on the display screen of the television monitor 20 for menu or game mode selection. The decision key 28 is used to decide an input to the game machine 12. However, a cancel key (not shown) may be provided to cancel the input to the game machine 12.

  The game machine 12 is further provided with an infrared light receiving unit 30, which receives an infrared signal from an infrared LED 34 of a racket type input device 32 described later.

  In this embodiment, two racket type input devices 32 are used. Each racket type input device 32 is provided with an infrared LED 34 and a serve switch 36. The serve switch 36 is operated when a serve is hit in a table tennis game. Further, as described above, the infrared signal from the infrared LED 34 is received by the infrared light receiving unit 30 of the game machine 12. As will be described later, the racket type input device 32 is provided with a piezoelectric buzzer element used as an acceleration sensor. The game machine 12 receives an acceleration correlation signal from the piezoelectric buzzer element, and FIG. A change is given to the ball 38 on the game screen shown.

  With reference to FIG. 2, the game screen displayed on the television monitor 20 in the sensation table tennis game apparatus 10 is divided into two upper and lower screens in the case of a competitive game, and an image viewed from one game player is displayed on the upper side. An image viewed from the other game player is displayed on the lower side. The ball 38 and the player character 40 are displayed as a sprite image, and the net character 42 and the table character 44 are displayed as a text screen both above and below. In addition, a score display unit 46 that displays the score of the corresponding game player is formed on either the upper or lower side.

  In this sensible ping-pong game apparatus 10, when the game player actually swings the racket type input device 32 in accordance with the movement timing of the ball 38 displayed on the game screen, the game processor receives an acceleration correlation signal from the piezoelectric buzzer element. Is detected by an infrared signal transmitted from the infrared LED 34 to the infrared light receiving unit 30. For example, according to the timing when the racket type input device 32 reaches a predetermined moving speed and the position of the ball 38 on the screen, The ball 38 is moved toward the opponent side of the table 44 as repelled by the racket. Depending on the position where the ball 38 has moved, it is identified whether it is out or in. However, if there is a difference between the timing at which the racket-type input device 32 is swung and the position of the ball 38 on the screen, it is recognized as, for example, idling.

  Referring to FIG. 3, the racket type input device 32 includes an infrared LED 34 and a serve switch 36 as described above, and further includes an acceleration sensor circuit 48. As shown in FIG. 5 described later, the acceleration sensor circuit 48 includes a piezoelectric buzzer element 66 and related circuits, and an acceleration correlation signal from the acceleration sensor circuit 48 is given to the MCU 50. The MCU 50 is, for example, an 8-bit one-chip microcomputer, converts the acceleration correlation signal from the piezoelectric buzzer element into a digital signal, and gives it to the infrared LED 34.

  The digitally modulated infrared signals from the respective infrared LEDs 34 of the two racket type input devices 32 are received by the infrared light receiving unit 30 of the game machine 12, digitally demodulated, and input to the game processor 52. One bit of this digital signal is transmitted as “1” or “0” depending on whether the switch 36 is turned on or off, so that the game processor 52 checks the bit so that the game player from either game player is driven. Can be determined.

  Although any kind of processor can be used as the game processor 52, in this embodiment, a high-speed processor developed by the applicant of the present invention and already applied for a patent is used. This high-speed processor is disclosed in detail, for example, in Japanese Patent Laid-Open No. 10-307790 [G06F13 / 36, 15/78] and US Pat. No. 6,070,205 corresponding thereto.

  Although not shown, the game processor 52 includes various processors such as an arithmetic processor, a graphic processor, a sound processor, a DMA processor, and the like, as well as an A / D converter, a key operation signal, and an infrared signal used when capturing an analog signal. An input / output control circuit that receives an input signal and provides an output signal to an external device is included. Therefore, the demodulated signal from the infrared light receiving unit 30 and the input signal from the operation keys 26-28 are given to the arithmetic processor through this input / output control circuit. The arithmetic processor executes necessary arithmetic according to the input signal and gives the result to the graphic processor or the like. Therefore, the graphic processor and the sound processor execute image processing and sound processing according to the calculation result.

  The processor 52 is provided with an internal memory 54, and the internal memory 54 includes ROM or RAM (SRAM and / or DRAM). The RAM is used as a temporary memory, a working memory or a counter or register area (temporary data area) and a flag area. An external memory 56 (ROM and / or RAM) is connected to the processor 52 through an external bus. A game program is preset in the external memory 56.

  The processor 52 executes calculation, graphic processing, sound processing, and the like in each of the above processors according to input signals from the infrared light receiving unit 30 and the operation keys 26-28, and outputs a video signal and an audio signal. The video signal is a combination of the above-described text screen and sprite image shown in FIG. 2, and these video signal and audio signal are given to the television monitor 20 through the AV cable 22 and the AV terminal 18. Therefore, for example, a game image as shown in FIG. 2 is displayed on the screen of the television monitor 20 together with necessary sounds (sound effects, game music).

  In the sensible table tennis game apparatus 10, simply speaking, the game machine 12, that is, the game processor 52 receives acceleration data included in the infrared signals from the two racket type input devices 32, and the movement acceleration of the racket type input device 32 is reduced. When the peak is reached, the movement parameter of the ball 38 (FIG. 2) is determined, and the ball 38 is moved on the game screen according to the parameter.

  As shown in FIG. 4, the racket type input device 32 includes a grip portion 58 and a hitting ball portion or a racket surface portion 60 extending from the tip of the grip. The grip portion 58 and the racket surface portion 60 are divided into, for example, two parts. The plastic housing is integrally formed.

  Inside the racket surface portion 60 of the plastic housing of the racket type input device 32, a boss 62 and a boss 64 for joining the split housing to each other are formed, and the acceleration sensor circuit 48 (FIG. 3) is further formed on the boss 62. The piezoelectric buzzer element 66 constituting is fixed. As is well known, the piezoelectric buzzer element 66 includes a ceramic plate 70 attached on a metal plate 68, and generates a buzzer sound when a voltage is applied between the metal plate 68 and an electrode on the ceramic plate 70. It is to do. In the present invention, the piezoelectric buzzer element 66 having such a configuration is used as an acceleration sensor. That is, it is well known that the ceramic plate 70 is a piezoelectric ceramic, and when a stress acts on the piezoelectric ceramic, an electrical signal is generated from the piezoelectric ceramic. Therefore, in the present invention, an electric signal generated on the ceramic plate 70 in accordance with the movement of the piezoelectric buzzer element 66, that is, the racket type input device 32, is taken out between the metal plate 68 and the electrode. However, in this embodiment, as described later, an acceleration correlation digital signal or data is taken into the MCU 50 by performing predetermined digital signal processing in accordance with an electrical signal.

  Further, a boss 72 is further formed in the lower housing, and a printed circuit board 74 is attached to the boss 72. On the printed circuit board 74, the serve switch 36 is mounted and the MCU 50 shown in FIG. 3 is mounted. A boss 76 is further formed in the lower housing, and an LED substrate 78 is fixed to the boss 76, and the infrared LED 34 is attached to the LED substrate 78.

  Referring to FIG. 5, the piezoelectric buzzer element 66 described above is included in the acceleration sensor circuit 48. Further, the MCU 50 is provided with an external oscillation circuit 80, and the MCU 50 operates in response to a clock signal from the oscillation circuit 80.

  Then, the MCU 50 outputs a rectangular wave signal from the output port 0 and applies it to the one electrode 66a of the piezoelectric buzzer element 66 through a resistor 82 of 10 kΩ, for example. The electrode 66a of the piezoelectric buzzer element 66 is grounded via a capacitor 84 such as 0.1 μF. A diode circuit 86 is also connected to the electrode 66a so that the fluctuation range of the voltage is within a certain range.

  The other electrode 66b of the piezoelectric buzzer element 66 is connected to the input port 0 of the MCU 50 and is also connected to the diode circuit 88 so that the voltage fluctuation range is within a certain range. The two electrodes 66a and 66b of the piezoelectric buzzer element 66 are electrically separated by a relatively high resistance 90 such as 1 MΩ.

  When the rectangular wave signal shown in FIG. 6A is applied to the electrode 66a of the piezoelectric buzzer element 66, a triangular wave as shown in FIG. 6B is applied to the input port 0 of the MCU 50 as the capacitor 84 is charged and discharged. A signal is input. However, the size (peak value) of the rectangular wave signal and the magnitude (peak value) of the triangular wave signal are determined by the diode circuits 86 and 88, respectively.

  When the racket type input device 32 (FIG. 4) is stationary, that is, not displaced, the minus (negative) level of the triangular wave signal does not change as shown at the left end of FIG. 6 (B). However, when the racket type input device 32 is displaced in the three-dimensional space by the operator, a voltage is generated in the piezoelectric buzzer element 66 due to the piezoelectric effect accompanying the displacement. This acceleration correlation voltage biases the negative level of the triangular wave signal. Therefore, when the racket type input device 32 is displaced, an acceleration correlation voltage of a level corresponding to the magnitude of the displacement acceleration is generated in the piezoelectric buzzer element 66. Therefore, the minus of the triangular wave signal input to the input port 0 of the MCU 50 is generated. The side level varies depending on the level of the acceleration correlation voltage 92 as shown in FIG.

  As will be described later, the MCU 50 converts such a negative level fluctuation of the triangular wave signal into acceleration data, and drives the LED 34 in accordance with the acceleration data.

  Here, with reference to FIG. 7 and FIG. 8, schematic operation of the sensation table tennis game apparatus 10 of FIG. 1 embodiment will be described. The game is started by turning on the power switch 24 shown in FIG. 1, but the game processor 52 shown in FIG. 2 first executes an initialization process in step S1. Specifically, the system and each variable are initialized.

  After that, the game processor 52 updates the image displayed on the monitor 20 by updating the image signal in step S2. However, this display image update is executed for each frame (television frame or video frame).

  And the game processor 52 performs the process according to a state (state). However, the first process is to select a game mode. In this game mode selection, the operator or game player operates the selection key 26 shown in FIG. 1 in step S3 of FIG. 7 to select the one-player mode, the two-player mode, the singles mode, or the doubles mode. At the same time, the difficulty level of the game is set.

  The actual table tennis game shifts from service to rally, but for the service, it is necessary to toss the ball 38 (FIG. 2) in the game screen. Therefore, the game processor 50 executes the pre-toss process in step S4, and then executes the toss process in step S5. That is, if the serve switch 36 is pressed in the toss preprocessing, the process proceeds to toss processing. If the swing of the racket type input device 32 is not performed in the toss processing, the processing returns to the toss preprocessing. If the swing of the racket type input device 32 is performed during the toss process, the process proceeds to the rally process in step S6. When the points are determined in the rally process, the process proceeds to the point process in the next step S7. In the point process, the game mode selection (S3) or the toss pre-process (S4) is returned depending on whether or not the point satisfies the game end condition.

  As shown in FIG. 7, after the toss process in step S5 and the rally process in step S6, in step S8, the ball 38 (FIG. 2) is played in accordance with the acceleration data from the racket type input device 32. In order to displace within the screen, a coordinate calculation process of the ball 38 is executed.

  Thereafter, if there is an interruption by the video synchronization signal, the image update in step S2 (FIG. 7) is executed. Further, the sound processing in step S9 is executed when a sound interrupt occurs, thereby outputting a sound effect such as game music or a hitting sound. When an interrupt other than the voice processing occurs, the game processor 52 receives an infrared signal (code) input from the infrared light receiving unit 30 in step S10 of FIG.

  Referring to FIG. 9, FIG. 9 shows the overall operation of the MCU 50. In this first step S11, the MCU 50 initializes variables handled by the MCU 50 such as a detection offset value and an offset counter, which will be described later, and inputs them. Initialize ports and output ports (FIG. 5).

  Thereafter, through acceleration detection processing (described in detail later) in step S12, in step S13, the MCU 50 determines whether or not the racket type input device 32 is of the first player. If the specific input port of the MCU 50 is set to “1”, it is the first player, and if it is “0”, it is the second player. Therefore, in this step S13, the specific input port of the MCU 50 may be viewed. If “YES” in the step S13, that is, in the case of the first player, in a step S14, if “NO”, that is, in the case of the second player, in a step S15, it is determined whether or not the transmission state.

  Although not shown, the MCU 50 has a state counter as a software counter, and each time this state counter reaches a constant value, the MCU 50 enters a transmission state. Therefore, in steps S14 and S15, it is detected whether or not the state counter has become a constant value. If “NO” in step S14 or S15, the transmission code is set to “0” in step S16, or if “YES” in step S14 or S15, the code transmission process in step S17 (details will be described later). Proceed to After executing the code transmission process in step S17, a state counter (not shown) is incremented (+1) in step S18, and the process returns to step S12. As will be described later, the code transmission process is performed bit-serially, but the required time is as short as several microseconds.

  FIG. 10 is a flowchart showing in detail step S12 of FIG. 9. In the first step S21 of the acceleration detection process, the MCU 50 sets the detected offset value set in the register (not shown) to an off counter (FIG. (Not shown). The “detection offset value” is a value for equally inputting the high and low levels of the rectangular wave determination shown in FIG. 6A evenly in time when no voltage is generated in the piezoelectric buzzer element 66. At the start of operation, this detected offset value is set to an arbitrary default value.

  In step S22 following step S21, the MCU 50 sets “1” to the output port 0 thereof. That is, “1”, that is, a high level is output. In step S23, the MCU 50 reads data from the input port 0.

  In step S24, it is determined whether the data of input port 0 read in step S23 is “1”. If “YES”, in the next step S25, the MCU 50 increments (+1) an integration counter (not shown). The “integration counter” is a counter for calculating a period during which the high level is read, and is incremented when the input port is “1” or high level, and is not performed when the input port is “0”.

  If the integration counter is incremented in step S25 or if “NO” is determined in step S24, the MCU 50 increments the offset counter in the subsequent step S26, and the count value of the offset counter is incremented in the next step S27. Determine whether the specified value has been reached. That is, after “1” is set to the output port 0 in step S22, the MCU 50 continuously outputs “1” of the output port 0 as long as “NO” is determined in step S27.

  If it is determined in step S27 that the count value of the offset counter has reached the specified value, the MCU 50 sets “0”, that is, a low level to the output port 0 in the next step S28. In the next step S29, the MCU 50 copies the detected offset value set in the register to the off counter.

  In subsequent step S30, the MCU 50 reads data from the input port 0. In step S31, it is determined whether or not the data of input port 0 read in step S30 is “1”. If “YES”, in the next step S32, the MCU 50 increments (+1) the integration counter.

  If the integration counter is incremented in step S32, or if “NO” is determined in step S31, the MCU 50 decrements the offset counter (−1) in the subsequent step S33, and the offset in the next step S34. Determine whether the count value of the counter has reached zero. That is, after “0” is set to the output port 0 in step S28, the MCU 50 continues to output “0” of the output port 0 as long as “NO” is determined in step S34.

  When “YES” is determined in step S34, that is, when the offset counter becomes zero (0), in the subsequent step S35, the MCU 50 subtracts the intermediate value from the count value of the integration counter, and calculates the difference. Ask. Here, the “intermediate value” is “N”, which is the total number of repetitions for high level detection returning from step S27 to step S23 and repetitions for low level detection returning from step S34 to step S30. "N / 2" in the case. The difference value is obtained by using the intermediate value in step S35 because the ratio between the high level and the low level in the state where the piezoelectric buzzer element is ideal and no acceleration correlation voltage is generated in the piezoelectric buzzer element. This is because (duty 50%) is used as a reference for determining acceleration.

  More specifically, as described above, the integration counter is the number of times “1” or high level has been read into the input port 0, is an ideal piezoelectric buzzer element, and no voltage is generated, step S35. The difference between “integration counter−intermediate value” at zero should be zero. However, when some voltage is generated in the piezoelectric buzzer element 66, a significant numerical value is obtained as the difference. Therefore, in step S36, the displacement acceleration of the racket type input device 32 is determined according to the difference value. Basically, the acceleration data is obtained by multiplying the difference value data by a predetermined coefficient.

  Thereafter, in step S37, the detected offset value is corrected based on the difference value obtained in step S35. That is, in the initial state, since the game player or the operator does not swing the racket type input device 32, no acceleration correlation voltage is generated in the piezoelectric buzzer element 66. Nevertheless, the fact that a non-zero difference value was detected in step S35 means that the detected offset value set in step S21 is not correct in view of the characteristics of the piezoelectric buzzer element used in the racket type input device. It means that. That is, it means that the piezoelectric buzzer element is not an ideal piezoelectric buzzer element. Therefore, in such a case, in order to correct the deviation of the individual characteristics of the piezoelectric buzzer element from the characteristics of the ideal piezoelectric buzzer element, the detected offset value is corrected in accordance with the difference value in step S37.

  On the other hand, if the detected offset value is always changed or corrected in step S37, the detected offset value is corrected even if the difference value is the result of the piezoelectric buzzer element actually generating the acceleration correlation voltage. However, the voltage generation period of the piezoelectric buzzer element is very short compared to other periods. Therefore, there is no particular problem even if step S37 is executed each time a difference value is detected. That is, since an appropriate correction is performed at the start of the actual table tennis game, the detected offset value does not fluctuate greatly even if the step S37 is subsequently executed every time acceleration is detected. There is no obstacle to the game.

  In the next step S38, the MCU 50 reads the value “1” or “0” from the key switch, that is, the serve switch 36 from the input port 1, and in the subsequent step S39, the MCU 50 reads the value from the key switch 36 and the previous value. Based on the displacement acceleration or movement acceleration of the racket type input device 32 determined in step S36, a parity bit is further added to calculate a transmission code, and the process returns to step S13 (FIG. 9) of the main routine.

  Here, with reference to FIG. 11, the code transmission from the racket type input device 32 to the game processor 52 in step S17 (FIG. 9) will be described. In the first step S41, the MCU 50 copies the transmission code created in step S12 or S16 to a temporary data register (not shown). Then, it is determined whether the most significant bit is “1”. If the most significant bit is “1”, “YES” is determined in step S42, and in subsequent step S43, the MCU 50 sets “1” in the output port 1 and turns on the LED 34 (FIG. 5). Thereafter, in step S44, a certain waiting time has elapsed. However, if “NO” in the step S42, that is, if the most significant bit is “0”, the process proceeds to a step S44 as it is.

  After the specified standby time has elapsed in step S44, the MCU 50 sets “0” to the output port 1 and turns off the LED 34 in step S45. Thereafter, in step S46, a certain waiting time has elapsed.

  After the specified waiting time has elapsed in step S46, in step S47, the MCU 50 shifts left by one bit and sets the transmitted bit as the least significant bit. That is, the transmission bits are exchanged for bit serial transmission. In step S48, it is determined whether transmission of all bits is completed. If “NO”, the process returns to step S42, and if “YES”, the process ends, and the process proceeds to step S18 shown in FIG.

  Here, with reference to FIG. 12, the code reception processing by the game processor 52 shown in step S10 of FIG. 7 will be described. Since this code reception process is performed by a timer interrupt, in the first step S51, the game processor 52 determines whether there is a timer interrupt. If “NO”, the timer interrupt is set in step S52, and if “YES”, the process proceeds to step S53.

  In step S53, the game processor 52 secures a temporary data area for code reception in the memory 54 (FIG. 3). Then, in the next step S54, the data of the input port to which the output signal from the infrared light receiving unit 30 is input is read. In the next step S55, the game processor 52 shifts the temporary data to the right, and sets the data read in step S54 as the least significant bit of the temporary data.

  Thereafter, it is determined in step S56 whether or not all bits have been received. If "NO", the next timer interrupt is waited in step S57. If “YES”, the timer interrupt is canceled in step S58, and temporary data is copied as a received code in step S59. The game processor 52 executes the game process of FIG. 7 using this received code.

  As shown in FIG. 7, after the game mode is selected in step S3, the game processor 52 executes a “pre-toss” process in the next step S6. More specifically, this toss pre-processing is executed according to the flowchart shown in FIG.

  In the first step S61 of the toss preprocessing, the game processor 52 detects the state of the key switch, that is, the serve switch 36 (FIG. 1) from the received code of the server player. Then, in step S62, it is determined whether or not step S36 is turned on, that is, whether or not the key switch code is “1”.

  The fact that the switch 36 is pressed means that the player using the racket-type input device has to serve, so the game processor 52 is “tossed” in the next step S63. In order to throw (toss) the ball 38 (FIG. 2) executed in the process, the axial speeds Vx, Vy, and Xz of the ball are determined. Thereafter, the state is shifted to “Tossed” in Step S64.

  Specifically, the “tossing” process is executed according to the flowchart shown in FIG. That is, in the first step S71, the game processor 52 checks each axis coordinate Px, Py, Pz of the tossed ball, and based on the coordinates, the position of the ball can be serviced (served) in step S72. Determine whether the range is exceeded. For example, since the serve cannot be performed if the Z-axis position, that is, the ball height is equal to or lower than a certain value, it is determined whether or not the ball exceeds such a preset serveable range.

  If “YES” is determined in step S72, that is, if the ball is out of the serveable range, in the next step S73, the game processor 52 returns the axis coordinates of the tossed to the state before the toss, In the subsequent step S74, the state is again shifted to “before toss”.

  If “NO” is determined in the step S72, that is, if the ball is within the serviceable range, in the next step S75, the game processor 52, from the code sent from the racket type input device of the server side player, A displacement acceleration in a direction perpendicular to the racket surface 60 (FIG. 4) of the input device is detected. Then, in step S76, it is determined whether or not the current acceleration detected in step S75 is smaller than a hold value held in a register (not shown). At the initial stage of the swing of the racket type input device 32, the reserved value is very small, and therefore “NO” is determined in the step S76. In this case, in step S77, the current acceleration is replaced with the hold value, and the acceleration hold value is updated.

  Conversely, if “YES” is determined in step S76, it means that the acceleration of the racket type input device has reached the peak at that time, and in step S78, the game processor 52 performs the serve at that time. Based on the acceleration hold value of the racket type input device, the speed of the racket (racket type input device) at the time of service is determined.

  In step S79, the game processor 52 calculates the initial axis speeds Vx, Vy, and Vz of the balls after serving based on the respective axis coordinates of the ball at that time and the racket speed obtained in step S78. In S80, the state is shifted to “in rally”.

  More specifically, the “during rally” process is executed according to the flowchart shown in FIG. That is, in the first step S81, the game processor 52 checks each axis coordinate Px, Py, Pz of the ball that has been struck, and based on the coordinates, the range in which the position of the ball can be received in step S82. Determine if you have reached. In this step S82, it is determined whether or not the ball has entered a predetermined receivable range. If “NO” in the step S82, the process is ended.

  If “YES” is determined in the step S82, that is, if the ball has entered the receivable range, in the next step S83, the game processor 52 determines whether or not the ball has exceeded the receivable range. . As described above, a predetermined range of each of the axes X, Y, and Z is set in advance as a receivable range, and the receiver-side player can hit the ball within this range. Accordingly, in steps S82 and S83, the game processor 52 determines whether or not the ball is within such a receivable range.

  If “YES” is determined in step S83, that is, if the ball once enters the receivable range but does not perform any processing, the ball goes out of the receivable range again. "Is determined, and the state is shifted to" point processing "in the next step S85.

  If “NO” is determined in step S83, that is, if the ball is within the receivable range, in the next step S86, the game processor 52 determines from the code sent from the racket type input device of the receiver player. A displacement acceleration in a direction perpendicular to the racket surface of the input device is detected. Then, in step S87, it is determined whether or not the current acceleration detected in step S86 is smaller than a hold value held in a register (not shown). At the initial stage of the swing of the racket type input device 32, the hold value is very small. Therefore, “NO” is determined in the step S87. In this case, in step S88, the current acceleration is replaced with the hold value, and the acceleration hold value is updated.

  Conversely, if “YES” is determined in step S87, it means that the acceleration of the racket type input device on the receiver side has reached the peak at that time, and in step S89, the game processor 52 The speed of the racket (racquet type input device) at the time of receiving is determined on the basis of the acceleration hold value of the racket type input device on the receiving side.

  In step S90, the game processor 52 calculates the initial axis speeds Vx, Vy, and Vz of the balls after the reception based on the respective axis coordinates of the ball at that time and the racket speed obtained in step S89. In S91, the player serving as the receiver is changed. That is, when the reception is successful, this time, the data from the other player's racket type input device is handled as the receiver side data.

  As shown in FIG. 7, after the tossing process in step S5 is completed or after the rallying process in step S6 is completed, the process proceeds to the ball coordinate calculation process shown in step S8. Specifically, the ball coordinate calculation process is executed according to the flowchart of FIG.

  In the first step S101, the game processor 52 checks the respective axis coordinates Px, PY, Pz of the ball at that time, and in the subsequent step S102, the game processor 52 determines that the Y-axis coordinates of the ball are the table 44 (FIG. 2). Whether the ball 38 has reached the surface of the table 44 or not. If “NO” in this determination, it means that the ball is still moving in the air, and the process proceeds to step S103.

  In step S <b> 103, the game processor 52 determines whether the ball position is within the contact range of the net 42. That is, if each axis range of the net 42 is set in advance and any one of the axis coordinates of the ball 38 is in the net contact range, “YES” is determined in this step S103, and each axis of the ball 38 is determined. If all the coordinates are outside the net contact range, “NO” is determined in step S103.

  If “NO” is determined in step S103, it means that the ball 38 has not been caught on the net 42. In the next step S104, the game processor 52 sets the Y-axis speed Vy of the ball 38 in accordance with the following equation (1). Update. In this embodiment, the depth direction of the table 44 is set as the Z axis, and the width direction of the table 44 is set as the X axis. The Y axis is the height direction.

(Equation 1)
Vy = Vy-g · dt
However, g: Gravitational acceleration, dt: Elapsed time since last update.

  Thereafter, each axis coordinate of the ball 38 is updated in accordance with Equation 2 in step S105.

(Equation 2)
Px = Px + Vx · dtPy = Py + Vy · dtPz = Pz + Vz · dt

In this way, the position coordinates of the ball 38 moving in the air are updated every moment.

  If “YES” is determined in step S103, since the ball 38 has been caught on the net 42, the game processor 52 determines the previous serve or receive as “net” in step S106, and determines the points. In step S107, the start is shifted to “point processing”.

  If “YES” in the previous step S 102, it means that the ball 38 has bounced to the table 44 or has fallen without bouncing to the table 44. If the ball 38 bounces on the table 44, “YES” is determined in step S108, otherwise “NO” is determined in step S108.

  That is, in step S108, when the height of the ball 38 is equal to the position on the surface of the table 44, it is determined whether or not the XZ range is within the preset XZ range of the opponent court of the table 44. When “YES” is determined in this step S108, the game processor 52 determines that the ball 38 has correctly bounced on the table 44, and each axis speed of the ball 38 after bouncing on the table 44 in the next step S109. Vx, Vy, and Vz are calculated.

  Thereafter, in step S110, the game processor 52 determines whether or not the bounce on the table of the ball 38 detected in step S108 is the second bounce (double bounce). This double bounce can be easily determined by setting an appropriate flag when the first bounce is detected. If it is not double bounds, the processing of the game processor proceeds to the previous step S103.

  If it is a double bounce, it indicates a receiving mistake of the opponent. In the next step S111, the game processor 52 finalizes the point as “double bounce”, and in step S112, the start shifts to “Boint processing”. Let

  If “NO” in the step S108, it means that the ball 38 has fallen without contacting the table 44. Therefore, the game processor 52 sets the previous serve or receive as “out” in the step S113 and points. At the same time, the state is shifted to “point processing” in step S114.

  “Point processing” is to process which player is added points in the table tennis game, and is executed according to the flowchart shown in FIG. That is, in the first step S121, the game processor 52 determines whether the determined point is “serve out” or “serve net”, or “receive out”, “receive net”, “receive miss” or “double bounds”. Judge if there is. If it is the former, in step S122, the score of the receiving player is incremented as the goal of the serving player. If it is the latter, the game processor 52 increments the score of the serve side player in step S123 as the loss of the receive side player.

  After that, in step S124, it is determined whether or not the game end condition has been reached as a result of the scoring in step S122 or S123. For example, when a one-set 21-point system is set, in a one-set match, the game ends when either player scores 21 points. Therefore, in this step S124, it is determined whether or not the game should be ended as a result of step S122 or S123. If “YES”, the state is shifted to “game mode selection” in step S125, and if “NO”, the next point processing is awaited.

  In this way, the table tennis game can be played on the screen of the monitor 20 by the sensation table tennis game apparatus 10 of FIG. 1 by displacing or swinging the racket type input device 32 in the three-dimensional space.

  In the above-described embodiment, one piezoelectric buzzer element 66 is built in the racket type input device 32 so that only the displacement acceleration in the direction perpendicular to the racket surface is detected. However, the piezoelectric buzzer elements are provided in two axes as shown in FIG. 18 in the racket-type input device 32 shown in FIG. 4, so that not only the acceleration in the direction perpendicular to the racket surface but also the direction parallel to the racket surface is achieved. The acceleration may be also detected.

  In the embodiment of FIG. 18, the piezoelectric buzzer element 66Y corresponds to the piezoelectric buzzer element 66 of FIGS. 4 and 5, and detects the acceleration in the direction perpendicular to the Y axis, that is, the racket surface. The piezoelectric buzzer element 66X is newly added, and detects acceleration in the direction parallel to the X axis, that is, the racket surface (direction parallel to the racket surface). That is, in the embodiment of FIG. 18, the principal surface of the piezoelectric ceramic plate of the piezoelectric buzzer element 66Y is orthogonal to the axis perpendicular to the racket surface, and the principal surface of the piezoelectric ceramic plate of the piezoelectric buzzer element 66X is perpendicular to the racket surface. They are arranged so as to be orthogonal to an orthogonal axis (an axis horizontal to the racket surface).

  Therefore, as shown in FIG. 19, the output port 0 and the input port 0 of the MCU 50 are used for the piezoelectric buzzer element 66Y, that is, the acceleration sensor circuit 48Y, and the output port 2 and the input port 2 are used for the piezoelectric buzzer element 66X, that is, the acceleration sensor circuit 48X. use. However, the output port 1 and the input port 1 are connected to the LED 34 and the serve switch 36 as in the embodiment of FIG. Furthermore, the specific circuit configuration of each of the acceleration sensor circuits 48Y and 48X is the same as that of the acceleration sensor circuit 48 of FIG.

  When the two piezoelectric buzzer elements 66Y and 66X are incorporated into the racket type input device 32 (FIG. 4) as shown in FIGS. 18 and 19, there is no change in the operation of the entire table tennis game shown in FIGS. There is a change in the specific operation of acceleration detection by, and the specific operations of “toss processing”, “rally processing” and “ball coordinate calculation processing” by the game processor 52.

  FIG. 20 shows an example of a specific operation of acceleration detection by the MCU 50 in the case where piezoelectric buzzer elements are provided on two axes. FIG. 20 corresponds to the previous FIG. 10, and steps having the same step numbers as those in FIG. 10 perform the same operations as the corresponding steps in FIG. 10. Further, a dash symbol “′” or ““ ”is attached to a step that performs an operation similar to the corresponding step in FIG. 10.

  In the first step S21 ′ of FIG. 20, the MCU 50 sets the detection offset value V (detection offset value in the direction perpendicular to the racket surface) set in the register (not shown) to an off counter (not shown). make a copy. In subsequent step S22, the MCU 50 sets “1” to the output port 0, and then in step S23, the MCU 50 reads data from the input port 0.

  In step S24, it is determined whether the data of input port 0 read in step S23 is “1”. If "YES", in the next step S25 ', the MCU 50 increments (+1) the integration counter V (integration value counter in the direction perpendicular to the racket surface: not shown). If the integration counter V is incremented in step S25 ′ or if “NO” is determined in step S24, the MCU 50 increments the offset counter in the subsequent step S26, and the offset counter is counted in the next step S27. Determine if the value has reached the specified value. That is, after “1” is set to the output port 0 in step S22, the MCU 50 continues to output “1” of the output port 0 until “YES” is determined in step S27.

  When it is determined in step S27 that the count value of the offset counter has reached the specified value, in the next step S28, the MCU 50 sets “0”, that is, a low level to the output port 0, and the next In step S29, the detected offset value V set in the register is copied to the offset counter.

  In subsequent step S30, the MCU 50 reads data from the input port 0. In step S31, it is determined whether or not the data of input port 0 read in step S30 is “1”. If "YES", the MCU 50 increments (+1) the integration counter V in the next step S32 '.

  If the integration counter V is incremented in step S32 ′ or if “NO” is determined in step S31, the MCU 50 decrements the offset counter (−1) in the next step S33, and in the next step S34. It is determined whether the count value of the offset counter has reached zero. That is, after “0” is set to the output port 0 in step S28, the MCU 50 continues to output “0” of the output port 0 until “YES” is determined in step S34.

  Thereafter, in step S21 ″ shown in FIG. 21, the MCU 50 copies the detected offset value H (detected offset value in the direction horizontal to the racket surface) set in the register (not shown) to the offset counter. In step S22 ′, the MCU 50 sets “1” to the output port 2, and then the MCU 50 reads data from the input port 2 in step S23 ′.

  In step S24, it is determined whether the data of the input port 2 read in step S23 is “1”. If “YES”, in the next step S25 ”, the MCU 50 increments (+1) the integration counter H (integration counter in the direction horizontal to the racket: not shown). In step S25”, the integration counter H In the subsequent step S26, the MCU 50 increments the offset counter, and in the next step S27, the count value of the offset counter reaches the specified value. Judge whether or not. That is, after setting “1” to the output port 0 in step S22, the MCU 50 continuously outputs “1” of the output port 2 until “YES” is determined in step S27.

  If it is determined in step S27 that the count value of the offset counter has reached the specified value, the MCU 50 sets “0”, that is, a low level to the output port 2 in the next step S28 ′, In step S29 ", the detected offset value H set in the register is copied to the offset counter.

  In subsequent step S <b> 30 ′, the MCU 50 reads data from the input port 2. In step S31, it is determined whether the data of the input port 2 read in step S30 is “1”. If “YES”, in the next step S32 ”, the MCU 50 increments (+1) the integration counter H.

  If the integration counter H is incremented in step S32 "or if" NO "is determined in step S31, the MCU 50 decrements the offset counter (-1) in the subsequent step S33, and in the next step S34. It is determined whether or not the count value of the offset counter has reached zero, that is, after setting “0” to the output port 2 in step S28, the MCU 50 outputs until “YES” is determined in step S34. Continue to output "0" of port 2.

  When “YES” is determined in step S34, that is, when the offset counter becomes zero (0), the MCU 50 calculates an intermediate value from the count value of the integration counter V in step S35 ′ shown in FIG. By subtracting, the difference value V is obtained. In step S36 ', the acceleration in the direction perpendicular to the racket surface of the racket type input device 32 is determined according to the difference value V. Basically, the difference value V data multiplied by a predetermined coefficient is acceleration data in a direction perpendicular to the racket surface. Thereafter, in step S37 ', the detected offset value V is corrected based on the difference value V obtained in step S35'.

  Then, in step S35 "shown in FIG. 22, the MCU 50 subtracts the intermediate value from the count value of the integration counter H to obtain the difference value H. Then, in step S36", the racket type input device 32 according to the difference value H. Determine the acceleration in the direction horizontal to the racket surface. Thereafter, in step S37 ″, the detected offset value H is corrected based on the difference value H obtained in step S35 ″.

  In the next step S38, the MCU 50 reads the value “1” or “0” from the key switch 36 from the input port 1, and in the subsequent step S39, the MCU 50 reads the value from the key switch 36 and the previous step S36. Based on the acceleration in the direction perpendicular to the racket surface of the racket type input device 32 determined in step 1 and the acceleration in the direction horizontal to the racket surface, a parity bit is further added to calculate a transmission code, and step S13 ( Return to FIG.

  FIG. 23 specifically shows “toss processing” executed by the game processor 52 when the biaxial piezoelectric buzzer element is provided. FIG. 23 corresponds to FIG. 14 described above, and steps having the same step numbers as those in FIG. 14 perform the same operations as the corresponding steps in FIG. Also, a dash symbol “′” is attached to a step that performs an operation similar to the corresponding step in FIG. 14.

  In the “tossing” process in this case, the axis coordinates Px, Py, Pz of the ball tossed at the first step S71 are checked, and the position of the ball is serviced (served) at step S72 based on the coordinates. Determine if the possible range is exceeded. If “YES” is determined in the step S72, in the next step S73, the game processor 52 returns each axis coordinate of the tossed ball to the state before the toss, and in the subsequent step S74, the state is again set to “ Move to “Before Toss”.

If “NO” is determined in the step S72, in the next step S75, the game processor 52 determines the two accelerations (on the racket surface) of the input device from the code sent from the racket type input device of the server player. Vertical acceleration and acceleration horizontal to the racket surface). In step S76 ′, it is determined whether or not the acceleration in the racket surface vertical direction detected in step S75 is smaller than a reserved value held in a register (not shown). If "NO" is determined in the step S76, the hold value is replaced with the current values of the acceleration perpendicular to the racket surface and the acceleration parallel to the racket surface in step S77 ', and the two acceleration hold values are updated.

  Conversely, if “YES” is determined in step S76, it means that the acceleration in the direction perpendicular to the racket surface of the racket type input device has reached a peak at that time, and in step S78 ′, the game processor 52 is determined. Is considered to have been served at that time, and the racket at the time of service (the racket type) based on the hold values of the acceleration in the direction perpendicular to the racket surface and the acceleration in the direction parallel to the racket surface of the racket type input device. The speed in the direction perpendicular to the racket surface of the input device) and the speed in the direction horizontal to the racket surface are determined.

  In step S79a, the game processor 52 then determines the speed in the direction perpendicular to the racket surface of the ball and the speed in the direction horizontal to the racket surface, the speed in the direction perpendicular to the racket surface of the racket type input device, and Based on the speed in the direction parallel to the racket surface, the speed in the direction perpendicular to the racket surface of the ball 38 after hitting the racket and the speed in the direction horizontal to the racket surface are calculated according to FIG. Calculate the angular velocity of the ball after serving.

(Equation 3)
BVh = BVh0 + aω (BVh0−RVh0)
BVv = -b (BVv0-RVv)
ω = ω0 + c (BVv0−RVv)
Where RVh: velocity in the direction parallel to the racket surface of the racket, RVv: velocity in the direction perpendicular to the racket surface of the racket, BVh0: velocity in the direction horizontal to the racket surface of the ball before the collision, BVv0: ball before the collision Speed in the direction perpendicular to the racket surface, ω0: rotational angular velocity of the ball before collision, and a, b, c: constants.

  Next, in step S79 ′, the initial velocity Vx, Vy, Vz of each ball after serving is calculated from the velocity in the direction perpendicular to the racquet surface of the ball, the velocity in the direction horizontal to the racquet surface, and the coordinate of each axis, and step S80. To change the state to “In Rally”.

  The “rally process” executed by the game processor 52 when a biaxial piezoelectric buzzer element is provided is specifically shown in FIG. FIG. 25 corresponds to FIG. 15 described above, and steps having the same step numbers as those in FIG. 15 perform the same operations as the corresponding steps in FIG. Further, a dash symbol “′” is attached to a step that performs an operation similar to the corresponding step in FIG. 15.

  In the first step S81, the game processor 52 checks each axis coordinate Px, Py, Pz of the ball that is struck by the serve, and on the basis of the coordinates, in step S82, the game position is set in advance. Determine whether the possible range has been reached. If “NO” in the step S82, the process is ended. If “YES” is determined in the step S82, in the next step S83, the game processor 52 determines whether or not the ball has exceeded the receivable range. If “YES” is determined in step S83, that is, if the ball once enters the receivable range but does not perform any processing, the ball goes out of the receivable range again. "Is determined, and the state is shifted to" point processing "in the next step S85.

  If “NO” is determined in the step S83, in the next step S86 ′, the game processor 52 determines the direction perpendicular to the racket surface of the input device from the code sent from the racket type input device of the receiver player. The acceleration in the direction parallel to the racket surface is detected. In step S87 ', it is determined whether or not the acceleration in the direction perpendicular to the racket surface detected in step S86 is smaller than the reserved value. If “NO” in the step S87, the acceleration hold value is updated in a step S88 ′ by the current value of the acceleration in the direction perpendicular to the racket surface and the acceleration in the direction horizontal to the racket surface.

  Conversely, when “YES” is determined in step S87 ′, it means that the acceleration in the direction perpendicular to the racket surface of the racket type input device on the receiver side has reached a peak at that time, and in step S89 ′. The game processor 52 considers that the receiving has been performed at that time, and based on the respective holding values of the acceleration in the direction perpendicular to the racket surface and the acceleration in the direction parallel to the racket surface of the racket type input device on the receiving side, The speed in the direction perpendicular to the racket surface of the racket (racquet type input device) and the speed in the direction horizontal to the racket surface at the time of receiving are determined.

  In step S90a, the game processor 52 then determines the direction speed in the direction perpendicular to the racket surface of the ball and the speed in the direction horizontal to the racket surface, the speed in the direction perpendicular to the racket surface of the racket type input device, and Based on the speed in the direction parallel to the racket surface, the speed in the direction perpendicular to the racket surface of the ball 38 after hitting the racket and the speed in the direction horizontal to the racket surface are calculated according to FIG. At the same time, the rotation angular velocity of the ball after serving is calculated.

  Next, in step S90 ′, the initial velocity Vx, Vy, Vz of the ball after receiving is calculated from the velocity in the direction perpendicular to the racquet surface of the ball, the velocity in the direction horizontal to the racquet surface, and the coordinate of each axis, and step S91. The player who becomes a receiver is replaced with. That is, when the reception is successful, this time, the data from the other player's racket type input device is handled as the receiver side data.

As shown in FIG. 7, after the tossing process in step S5 is completed or after the rallying process in step S6 is completed, the process proceeds to the ball coordinate calculation process shown in step S8.
Specifically, this ball coordinate calculation processing when the biaxial piezoelectric buzzer element is provided is executed according to the flowchart of FIG. This flow chart of FIG. 26 is the same as the flow chart of FIG. That is, when the biaxial piezoelectric buzzer elements 66Y and 66X are provided, the respective axial speeds and rotational angular velocities of the balls after bouncing on the table are obtained from the respective axial speeds of the balls and the rotational angular velocities of the balls previously obtained. .

  Thus, in the case where the piezoelectric buzzer elements 66X and 66Y are provided on the two axes in the racket type input device 32, the rotational angular velocity of the ball is calculated, so compared with the embodiment having only one piezoelectric buzzer element 66, The movement trajectory of the ball becomes very close to an actual table tennis game, and the reality in the sensation table tennis game apparatus of the embodiment of FIG. 1 can be further improved.

  Further, as shown in FIG. 27, three piezoelectric buzzer elements 66X, 66Y, and 66Z may be used so that accelerations in the respective directions of the three axes can be detected. In FIG. 27, the piezoelectric buzzer element 66X detects acceleration in the X-axis direction, the piezoelectric buzzer element 66Y detects acceleration in the Y-axis direction, and the piezoelectric buzzer element 66Z detects acceleration in the Z-axis direction. When three piezoelectric buzzer elements are used, three acceleration sensor circuits 48 may be used as in FIG. In the embodiment of FIG. 27, the main surface of the piezoelectric ceramic plate of the piezoelectric buzzer element 66Y is orthogonal to the axis perpendicular to the racket surface, and the main surface of the piezoelectric ceramic plate of the piezoelectric buzzer element 66X is orthogonal to the axis perpendicular to the racket surface. The main surface of the piezoelectric ceramic plate of the piezoelectric buzzer element 66Z is arranged so as to be orthogonal to an axis (third axis) orthogonal to the front two axes, respectively.

  In the above-described embodiment, the voltage signal is extracted as the acceleration correlation signal generated in the piezoelectric buzzer element. However, it may be taken out as a current signal.

  Further, in the above-described embodiment, the MCU 50 and the LED 34 constitute digital signal transmission means, and the acceleration correlation digital signal is transmitted wirelessly to the processor side. However, the signal transmission means is not wireless and may use an appropriate data transmission line.

  Further, although an example of outputting a digital signal as an acceleration correlation signal has been exemplified, the detected voltage value or current value may be transmitted as an analog signal.

DESCRIPTION OF SYMBOLS 10 ... Table tennis game apparatus 12 ... Game machine 20 ... Television monitor 30 ... Infrared light-receiving part 32 ... Racket type input device 34 ... Infrared LED
66, 66X, 66Y, 66Z ... Piezoelectric buzzer element

Claims (10)

A sensation game device for playing a game by displaying at least a character on a screen of a placed display device,
A game machine placed on it,
First input means moved in a three-dimensional space by a first game player;
Second input means moved in a three-dimensional space by a second game player,
The first input means includes
A first acceleration sensor that outputs a first acceleration correlation signal according to an acceleration when the first input means is moved in a three-dimensional space;
First transmission means for transmitting the first acceleration correlation signal to the game machine,
The second input means includes
A second acceleration sensor that outputs a second acceleration correlation signal according to an acceleration when the second input means is moved in a three-dimensional space;
Second transmission means for transmitting the second acceleration correlation signal to the game machine,
The game machine
Receiving means for receiving the first acceleration correlation signal and the second acceleration correlation signal;
A bodily sensation game apparatus comprising: a game processor that causes a change in the character displayed on the screen based on the first acceleration correlation signal and the second acceleration correlation signal received by the receiving means.   The game processor calculates the speed of the character after hitting by the first game player based on the coordinates of the character and the first acceleration correlation signal, and moves toward the opponent side corresponding to the second game player. Based on the coordinates of the character after the ball hit by the first game player and the second acceleration correlation signal, the speed of the character after the ball hit by the second game player is calculated, and the first game player The bodily sensation game device according to claim 1, wherein the bodily sensation game device is moved toward the other party direction corresponding to.   The game processor calculates the speed of the character after hitting by the first game player based on the coordinates of the character after hitting by the second game player and the first acceleration correlation signal, and the second game The bodily sensation game apparatus according to claim 2, wherein the bodily sensation game apparatus is moved toward the opponent side corresponding to the player. The first input means further includes a switch operable by the first game player,
The game processor displaces the character in response to the operation of the switch, and based on the character's coordinates at that time and the first acceleration correlation signal, the game processor after the ball is hit by the first game player. The bodily sensation game apparatus according to claim 2, wherein the speed is calculated.   The game processor calculates the speed of the character after the ball is hit by the first game player based on the speed of the character and the first acceleration correlation signal, and moves toward the opponent direction corresponding to the second game player. And calculating the speed of the character after hitting by the second game player based on the speed of the character after hitting by the first game player and the second acceleration correlation signal. The bodily sensation game device according to claim 1, wherein the bodily sensation game device is moved toward the other party direction corresponding to.   The game processor calculates the speed of the character after hitting by the first game player based on the speed of the character after hitting by the second game player and the first acceleration correlation signal, and the second game The bodily sensation game apparatus according to claim 5, wherein the bodily sensation game apparatus is moved toward the opponent side corresponding to the player. The first input means further includes a switch operable by the first game player,
In response to the operation of the switch, the game processor displaces the character, and based on the speed of the character and the first acceleration correlation signal, the character of the character after hitting by the first game player The bodily sensation game apparatus according to claim 5, wherein the speed is calculated. When the game processor determines that the first game player has received successfully based on the first acceleration correlation signal from the first acceleration sensor of the first input means that is moved by the first game player, The receiver is changed to a second game player, the second acceleration correlation signal from the second acceleration sensor of the second input means moved by the second game player is treated as receiver data, and the second game player When it is determined that the second game player has received successfully based on the second acceleration correlation signal from the second acceleration sensor of the second input means to be moved, the receiver is changed to the first game player, The first acceleration correlation signal from the first acceleration sensor of the first input means to be moved by the first game player Treated as data receiver, sensory game apparatus according to claim 1.





A bodily sensation game method for playing a game by displaying at least a character on a screen of a television monitor,
The first acceleration sensor incorporated in the first input means moved in the three-dimensional space by the first game player detects the first acceleration corresponding to the acceleration when the first input means is moved in the three-dimensional space. Receiving an acceleration correlation signal;
The second acceleration sensor incorporated in the second input means moved in the three-dimensional space by the second game player detects the second acceleration according to the acceleration when the second input means is moved in the three-dimensional space. Receiving a two-acceleration correlation signal;
Causing the character displayed on the screen to change based on the first acceleration correlation signal and the second acceleration correlation signal. A recording medium that records a computer program that causes a computer to function as a bodily sensation game device that displays a character and plays a game on the screen of a television monitor,
The computer program is
The first acceleration sensor incorporated in the first input means moved in the three-dimensional space by the first game player detects the first acceleration corresponding to the acceleration when the first input means is moved in the three-dimensional space. Receiving an acceleration correlation signal;
The second acceleration sensor incorporated in the second input means moved in the three-dimensional space by the second game player detects the second acceleration according to the acceleration when the second input means is moved in the three-dimensional space. Receiving a two-acceleration correlation signal;
A recording medium that causes the computer to execute a step of causing a change in the character displayed on the screen based on the first acceleration correlation signal and the second acceleration correlation signal.

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