JP2807625B2 - Method of controlling common display in game system and multiplayer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game system in which a plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other and a multiplayer game can be played.

[0002]

2. Description of the Related Art Hitherto, a game system in which a plurality of independent game devices are connected to each other via a data transmission line to perform a multiplayer game has been developed and put into practical use (JP-A-1-91887, JP-A-1-91887). −91888,
JP-A-1-91889). This game system can play a single player game with a single game device, and can play a multiplayer game with a plurality of game devices.

As a game system of this kind, a game system called "Final Wrap", which is a product of the present applicant, is well known. In this game system, a plurality of independent drive game devices are connected to each other via a transmission line. Then, when the player selects the single player game, the player can enjoy the game while competing the racing car driven by the player with the racing car driven by the computer in the game space displayed on the display. Further, when the player selects a multiplayer game with a player of another drive game apparatus, the player competes with a racing car driven by the player and a racing car driven by another player in the same game space. You can enjoy player games.

[0004]

In the conventional multi-player game system, at first glance, it appears that game screens synchronized with each other are displayed on the display of each game device for playing a multi-player game. Has not been performed, the synchronization control between the game devices has not been performed.

[0005] That is, when a game is started, each game device performs a game calculation independently of each other, and only receives the traveling speed and position data of the player's car from other game devices. No synchronization control was performed.

For this reason, a display such as a player's own car or a player's car of another machine appears on the display of each game device, but originally exists in the same game space.
There is a problem that the movements of the respective display bodies that should be operated in the same manner become uneven.

For example, in the multi-player game system, data transmission delay between the game devices, transmission / reception omission, and the like may occur. However, the conventional system does not perform a synchronization correction process for a transmission delay of data transmitted / received between the game devices, a transmission / reception leak, and the like. For this reason, as shown in FIG. 12, a player car of another game device that originally looks at the position indicated by 120-1 may cause a delay in transmission of data from the other game device, omission of transmission / reception, and the like, resulting in a solid line 120-1. And the broken line 120
There has been a problem that a situation may occur in which the display is alternately displayed at the position indicated by -2.

[0008] Further, for example, in a case where a multiplayer game is played with three game devices, it is assumed that there is a scene where a bird flies toward the sky when a leading player car passes a specific part of a racing course. In this case, even if the three player cars pass through the location almost simultaneously, the timings at which the birds appear on the display of each game device to fly up are slightly different from each other. For the audience watching the game screen from behind, there is a problem that the movements of the display body such as a bird that should originally move in the same manner appear irregular.

[0009] Further, for example, when a plurality of players goal in one after the other, a screen in which a checkered flag is waved is displayed on the display of each game device as shown in FIG. However, in the conventional system, the operation of the checkered flag displayed on the display of each game device is slightly shifted, giving an unnatural impression to a viewer.

The present invention has been made in view of such conventional problems, and an object of the present invention is to display and view a synchronously controlled game screen on a display of each game device that performs a multiplayer game. It is an object of the present invention to provide a multiplayer game system capable of giving a natural feeling to a player and a method of controlling a common display in the multiplayer system.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other. A game system formed so that a player can play a multi-player game in a common game space with a player of another game device while watching a game screen displayed on a display, wherein each of the game devices is The asynchronous counter means for outputting the count signal of the other game device, and the amount of synchronization deviation of the data received from the other game device based on the count signal of the own device and the other device count signal received from the other game device. Synchronization signal correcting means for detecting each of the game devices, and the other game devices received based on the detected amount of synchronization deviation with each of the game devices. Game processing means for correcting the received data to data synchronized with the own device and performing multi-player game calculation, and image processing for displaying a multi-player game screen on the display based on the calculated game data Means.

According to a second aspect of the present invention, in the first aspect, the game operation means determines whether or not the player character of the game apparatus itself and other player characters are based on an operation signal of the player, data received from another game device, and a predetermined game program. A multiplayer game in which a player character of the game machine and a common display body other than the player character appear.

According to a third aspect of the present invention, in the second aspect, the game calculation means adjusts the data of the other player's character included in the received data to the synchronization of the own apparatus based on the detected amount of synchronization deviation. It is characterized in that the data is corrected and the game calculation is performed.

According to a fourth aspect of the present invention, in the third aspect, the game operation means is formed and operated to calculate a current position and a position change amount of the player character of the own device as transmission data to another device. The current position of the other player's character is corrected to position data synchronized with the own device based on the synchronization deviation amount and the current position and position change data of the other player character included in the received data, and the game calculation is performed. It is formed to perform.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, each of the game devices calculates a basic count difference between a count signal of the game device itself and another device of another game device. The game machine further includes a count difference storage unit that stores the count value for each game device, wherein the synchronization signal correction unit calculates a real-time count difference between the count signal of the own device and a received count signal of another device. The amount of synchronization deviation of data received from another game device is detected for each of the other game devices based on an error from the basic count difference.

According to a sixth aspect of the present invention, in the fifth aspect, when the calculated error exceeds a predetermined reference value, the synchronization signal correcting means sets the value of the basic count difference corresponding to the other game device. And correcting and storing the value of the basic count difference in the count difference storage means.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, a reference game device serving as a synchronization reference is determined from the plurality of game devices, and each game device stores a synchronization count signal. A synchronization signal storage unit, wherein the synchronization signal correction unit receives the count signal from the basic game device as a reference synchronization count signal, and calculates a basic count difference between the count signal of the own device and the received reference synchronization count signal. Based on the above, the received reference synchronization count signal is corrected, and is stored in the synchronization signal storage means as a synchronization count signal.
A game calculation for synchronously controlling the operation of a common display that also appears in the game space of another game device based on the synchronization count signal is formed.

According to an eighth aspect of the present invention, a plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device can view a game screen displayed on a display. A game system formed so that a multi-player game can be performed in a common game space with a player of another game apparatus, wherein each of the game apparatuses includes an asynchronous counter unit that outputs a count signal of the game apparatus. The reference game device is configured to perform synchronous display control of the game screen based on the own device count signal, and transmit the own device count signal to another game device as a reference synchronous count signal. The other game device that receives the synchronization count signal includes the count signal of the game device itself and the received reference synchronization clock. A synchronization signal correction means for real-time correcting the amount of synchronization deviation of the received reference synchronization count signal based on the synchronization count signal and calculating a synchronization count signal, and controlling synchronous display of a game screen based on the synchronization count signal. Is formed.

According to a ninth aspect of the present invention, in the ninth aspect, each of the game devices is formed to include both the asynchronous counter means and the synchronous signal correction means, and one of the plurality of game devices is provided with one of the plurality of game devices. It is set as a reference game device.

According to a tenth aspect of the present invention, in any one of the eighth and ninth aspects, the other game device calculates a basic count difference between a count signal of the game device itself and a reference synchronization count signal received from the reference game device. The synchronization signal correcting means calculates a real-time count difference between the self-device count signal and a received reference synchronization count signal, and calculates the calculated real-time count difference and the basic count difference. And detecting a deviation amount of the synchronization of the received reference synchronization count signal based on the error of the reference synchronization count signal.

According to an eleventh aspect of the present invention, in the tenth aspect, the synchronizing signal correcting means is configured to determine that the calculated error is:
When the value exceeds a predetermined reference value, a correction calculation of the value of the basic count difference is performed, and the value of the basic count difference is corrected and stored in the count difference storage means.

According to a twelfth aspect of the present invention, in any one of the eighth to eleventh aspects, each of the game devices has its own device based on a player's operation signal, data received from another game device, and a predetermined game program. A game calculating means for performing a multi-player game calculation in which a player character, a player character of another device, and a common display body other than the player character appear; and a multi-player game on the display based on the calculated game data. Image processing means for displaying a screen, wherein the game operation means controls synchronous display of all or a part of the common display object appearing in the game space of another game device based on the synchronization count signal. It is characterized by having been formed so that.

According to a thirteenth aspect of the present invention, a plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device can view a game screen displayed on a display. However, in a game system formed so that a multi-player game can be performed in a common game space with a player of another game apparatus, data periodically transmitted and received between each of the game apparatuses may be out of synchronization with each other. Based on other game device data received, including data for detecting
It is characterized in that synchronous control is performed so that common display objects other than the player characters appearing in the game of each game device operate in synchronization.

According to a fourteenth aspect of the present invention, in accordance with the thirteenth aspect, the game device uses the count signal of an asynchronous counter of each game device as data for detecting a synchronization deviation between the game devices, and Based on the count signal of the other game device and the count signal of the other device received from the other game device, and controls to detect the amount of synchronization deviation of data received from the other game device for each of the other game devices. And

[0025]

In the game system of the present invention, a plurality of independent game devices are connected to each other via a data transmission line. Each game device can play a single player game alone, and can also play a multiplayer game with a plurality of players with another game device.

Each game device calculates the amount of synchronization deviation of the received data for each game device of the receiving destination based on the count signal of the game device itself and the count signal of the other device received from the other game device. As a result, the amount of synchronization deviation of transmission data from another game device to the own game device can be accurately grasped for each game device.

Then, based on the detected amount of synchronization deviation with each game device, the received data from the other game device is corrected to data synchronized with its own device, and the game calculation for the multiplayer is performed. To display a multi-player game screen on the display based on the calculated game data.

Thus, each of the game devices playing the multiplayer game can display the multiplayer game screen synchronously controlled on the display on the display, and does not give a stranger to the viewer.

According to the second aspect of the present invention, the first aspect is provided.
Using the technique of the above, the player character of the player's own device, the player character of the other device, and a common display body other than the player character appear in the game space to calculate a multi-player game, and the game screen is displayed on the display. Can be displayed.

According to the third and fourth aspects of the present invention, based on the detected amount of synchronization deviation of each game device, the received data from another game device is synchronized with its own device. And a multi-player game calculation is performed. Therefore, even if the next data of another moving player character is not sent due to transmission delay or the like, for example, the current position of the player character is estimated and calculated based on the amount of synchronization deviation and displayed on the display. Can be displayed.

In this way, even if the transmission and reception of transmission data is disturbed or delayed, the synchronous display control is performed on the display of each game device so that the player character of another game device operates in a more natural manner. can do.

In particular, according to the invention of claim 4, each game device is formed so as to calculate not only the current position of the player character of the own device, but also the amount of change in the position, as transmission data to another device. . Therefore, even when the next data of another player character running is not transmitted due to a transmission delay or the like, the estimation calculation of the current position of the player character based on the amount of synchronization deviation can be performed more favorably.

According to the fifth aspect of the present invention, each game device obtains in advance the basic count difference between the count signal of its own device and the transmitted count signal of the other device, and stores it in the count difference storage means. deep. Then, using the synchronization signal correction means, the real-time count difference between the count signal of the own device and the count signal of the other device is calculated, and based on the error between the real-time count difference and the basic count difference, a signal from another game device is used. The amount of synchronization deviation of the received data is detected.

Thus, each game device can more accurately and easily detect the amount of synchronization deviation received from each game device.

Further, according to the invention of claim 6, since the basic count difference stored in the count difference storage means can be sequentially corrected based on the data actually transmitted / received, it is possible to approach the optimum value. The amount of synchronization deviation can be detected more reliably.

According to the seventh aspect of the present invention, not only the relative synchronization deviation between the respective game devices but also the synchronous count signal which is the basis of the whole system is obtained by the correction operation, and each of the multi-player games is performed. Synchronous display control of a common display object appearing in the game space of the game device can be more easily performed.

According to the eighth aspect of the present invention, the reference game device controls the synchronous display of the game screen based on the count signal of the own device, and uses the own device count signal as the reference synchronous count signal. Send it to another game device.

The other game device receiving the reference synchronization count signal corrects the synchronization deviation between the synchronization count signal of the own device and the received reference synchronization count signal in real time, and executes the synchronization counting of the own device. Calculate the signal. Then, based on the calculated synchronization count signal, the game device performs synchronous display control of the game screen of the own device.

Thus, it is possible to control the synchronous display of the game screen while synchronizing the entire system.

According to the ninth aspect of the present invention, there is provided an eighth aspect of the present invention.
Each of the game devices constituting the system can basically have the same configuration, thereby reducing the cost of the entire system.

According to the tenth aspect of the present invention, by setting in advance the basic count difference between the count signal of the own device and the received reference synchronization count signal, the synchronization deviation of the received reference synchronization count signal is set. The amount can be detected more easily and accurately.

Further, according to the invention of claim 11, when the error calculated in claim 10 exceeds a predetermined reference value, the value of the basic count difference is corrected and calculated. For this reason, even if, for some reason, for example, the count signal of any game device is not temporarily incremented, this is detected as a phenomenon in which the error exceeds the reference value, and the basic count difference is set to the optimum value. Can be modified. As a result, even when the counting operation of the asynchronous counting means of each game device is disturbed, the synchronous display control of the entire system can be favorably performed without being affected by the disturbance.

According to the twelfth aspect of the present invention, each game device performs a synchronous display control of a common display that appears in the game space of another game device based on the synchronous count signal. Thereby, even in a case where each of the game devices configuring the system individually performs the game calculation, the synchronous display control of the entire system can be more favorably performed.

In particular, by performing such a synchronous display control while correcting and calculating the value of the basic count difference as shown in the invention of claim 11, the synchronous display control is not affected by the disturbance of the counting operation of the asynchronous counting means. Thus, the synchronous display control of the common display can be favorably performed.

According to the thirteenth and fourteenth aspects of the present invention,
Synchronous display control for displaying the common display so as to operate in synchronization with each other on the game screen of each game device that performs the multiplayer game can be favorably performed.

[0046]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the drawings.

Overall System FIG. 1 shows an example of a circuit race type game system to which the present invention is applied. The game system according to the embodiment includes a plurality of independent game devices 10-1 and 10-.
Are connected to each other via a data transmission line.

Here, the independent game devices 10-1 and 10-1
.., 0-2,...
,... Are formed so that a single player game can be played independently, and it does not mean that the housings for the game devices are formed independently. In the embodiment, two game devices 10
-1 and 10-2 are provided on the same base 12, and the other two game devices 10-3 and 10-4 are also provided on the same base 12.

Each of the game devices 10 is modeled on the driver's seat of a racing car. And sheet 1
The player 16 sitting on the screen 4 operates the steering wheel 20, the accelerator, the brake, etc. while watching the game screen displayed on the display 18 in front, steers the player car displayed on the display 18, and appears in the game space. You are formed to compete with other racing cars.

FIG. 2 shows each of the game devices 10-1 and 10-1.
, Are connected in a loop via the communication interface 22 and the transmission line 24. Each game device 10-1, 10-2,...
.. Indicate the communication interface 22 and the transmission line 24.
The game information is transmitted / received to / from another game device via the game device. In the embodiment, the transmission line 24 connected in a loop is formed so as to transmit game information in a clockwise direction.

Configuration of Game Apparatus FIG. 3 shows a specific configuration of the game apparatus 10 according to the embodiment.

The game device 10 of the embodiment has a
0, a work RAM 40, an image processing device 42, an asynchronous counter 60, a synchronous counter memory 62, a count difference memory 64, a display 18, a player input unit 44, a coin insertion unit 46, and an I / O interface 50.

The arithmetic control unit 30 includes the game arithmetic unit 3
2, a group setting unit 34 and a synchronization signal correction unit 36 are included.

The player input section 44 includes a handle 2
The player 16 includes various operation units such as an accelerator, a brake, and the like for the player 16 to operate the racing car.

The game operation section 32 controls the player on a racing course set in a predetermined game space based on an operation signal from the player input section 44, data in the work RAM 40, a predetermined game program, and the like. Game calculation to make a racing car to compete with another racing car,
Output to 2

The image processing device 42 calculates the image data of the game screen based on the result of the game calculation, and displays it on the display 18.

As a result, a game screen 100 as shown in FIG. 4A is displayed on the display 18. This game screen 100 is a racing course 110
A state in which the racing car 120 controlled by the player is running is shown above.

In the present embodiment, when the game apparatus 10 performs a single player game, the player is formed to enjoy the game while competing with a computer car appearing in the game space. When a multi-player game is played between a plurality of game apparatuses 10, each player is formed to enjoy the game while competing with a racing car driven by another player.

Data transmission / reception In order to play a multiplayer game using such a game device 10, each game device 10-
1, 10-2,..., 10-8, each game device 10
Need to send and receive data.

Transmission / reception of data with another game apparatus via the transmission line 24 is performed by a custom I / O for communication.
C56 is formed to control the reception RAM 52, the transmission RAM 54, and the communication interface 22 to perform the control. That is, data received from another game device is sequentially written into the reception RAM 52, and transmission data calculated by the game calculation unit 32 or the like of the game device 10 is once written into the transmission RAM 54, and the communication interface 22.
And is transmitted to another game device via the.

In the system of the embodiment, at the time of start-up, one of the game devices 10-1, 10-2,..., 10-8 is automatically set as a master and the rest are automatically set as slaves. In other words, the communication custom IC of the game device 10 that is first turned on when the system is started up functions as a master that controls the communication of the other game devices 10. Other slave game devices 10 powered on thereafter
Operates such that the communication custom IC 56 receives the command from the master communication custom IC 56 and controls the communication of its own data.

At this time, the group setting unit 34 determines which game device to use based on input signals from the player input unit 44 and the coin insertion unit 46 and data received from another game device received by the reception RAM 52. It is determined whether a group setting for a multi-player game is to be performed. Specifically, the group number (see FIG. 6) of the board status output to the transmission RAM 54 is calculated and set. As a method for setting such a group, various methods can be adopted as necessary. As a specific method, for example, an example is described from column 7, line 33 to column 11, line 44 of Japanese Patent Publication No. Hei 3-70993 filed earlier by the present applicant, and furthermore, from column 12 to column 12. Another example is described from the 19th line to the 42nd line.

Structure of Transmission Data FIG. 5 shows each game device 1 transmitted and received in the embodiment.
The data structure of 0 is shown. The transmission data of each game device 10 basically includes board status data and own vehicle status data.

FIG. 6 shows the specific contents of the transmission / reception data.

The board status data includes a command,
It includes a board number, a group number, a synchronous count signal, an asynchronous count signal, a checksum, and other information.

The command is data indicating the current mode of the game apparatus 10. For example, it indicates whether it is in an attract mode before coin insertion (waiting for a customer), or in a game mode in which a player is playing a game.

The board number serves as an identification number of the game device. In a system in which eight game devices 10 are connected via a transmission line, the board number is used to identify which game device the reception data stored in the reception RAM 52 belongs to.

The group number is used to determine a game device belonging to the same group when playing a multiplayer game. If set to the same group,
Group numbers have the same value.

The synchronization count signal is used for synchronizing up to eight game devices. The same value is set for the entire system. In the embodiment, each game device 10 operates using an independent CPU that functions as the arithmetic control unit 30. For this reason, the system of the embodiment is configured to synchronize with one of the eight game devices 10 (the game device having the smallest board number in the embodiment). As will be described later, each game device 10 is configured to calculate a synchronous count value for each game device based on the asynchronous count signal transmitted from the reference game device 10 and synchronize the entire system. However, in a case where the reference game device goes down during the game, the synchronization count value of the own device is transmitted as data of the synchronization count signal.

The asynchronous count signal is data indicating whether data is sequentially and correctly sent from another game device. For example, from the game device 10-1 to the game device 1
When data is transmitted to 0-2, every time the asynchronous count signal (output of the asynchronous counter 60) of the game device 10-1 is transmitted, the value is incremented to "0, 1, 2, 3, ...". If so, the data is being sent correctly.

The own vehicle status data includes statuses such as the presence of a vehicle and collision determination, Z coordinate data, X coordinate data, X change amount data, Z change amount data, rotation angle data,
And other data.

The status such as the presence of the car and the collision judgment is a flag that stands when the own car collides with another car. The XZ coordinate data of the own vehicle and the other vehicle are compared, and if they match, it is determined that the vehicle has collided with another vehicle, and a flag is set.

The Z coordinate data is distance data on the course with the starting point as the origin.

The X coordinate data is the amount of left and right movement with respect to the center of the course.

The X change amount data indicates that the vehicle has one frame (1
/ 60 seconds) on the X-axis. Normally,
The position of the X coordinate of the own vehicle is specified by the X coordinate data. However, the X coordinate data may not be transmitted correctly for some reason. At this time, the game device that has received the data estimates the current X coordinate data using the X change amount data received in the previous frame. For example, the game apparatus 10-1 transfers the frame 0,
..., but the data of frame 2 may not be correctly received by the game device 10-2. In this case, the game device 10-2
The X coordinate data of the frame 2 is estimated and calculated using the change amount data.

The X change amount data is also used to reduce the time lag between the game devices. For example, the data processed by the game device 10-1 is processed by the game device 10-2 one frame later. Therefore, in the game device 10-2, the game device 1
Based on the X coordinate data from 0-1 and the X change amount data, it is used for predictive calculation of the X coordinate data of the next frame.

The Z change amount data indicates that the own vehicle has one frame (1
/ 60 seconds) on the Z-axis. And Z
The change amount data is the same as the X change amount data in a case where the Z coordinate data is not accurately sent and a point used for reducing the time lag.

In the game apparatus 10 of the embodiment, the command and the board number are calculated and set, and the group setting section 34 performs the setting calculation of the group number for performing the multi-player game. A signal is output, and the synchronization signal correction section 36 is configured to calculate and output the value of the synchronization counter.
Further, the game calculation section 32 is formed so as to calculate and output the own vehicle status information. The calculation output of such board status and own vehicle status is 1
It is performed every / 60 seconds and transferred to the transmission RAM 54 every 1/60. The custom IC 56 transmits the transmission RAM 5 based on an instruction from the custom IC 56 functioning as a master.
4 is transmitted to the communication interface 2
2. The transmission is sequentially performed to another game device via the transmission line 24.

Data Correction Process In the multi-player game system thus configured, each game device 10 operates based on the count signal output from its own asynchronous counter 60,
Perform their own game calculations.

As described above, in the conventional game system, a multi-player game calculation is performed from the position data, direction data, and the like of the player's car of another game apparatus received via the transmission line 24. Did not synchronize with another game device 10.

For this reason, although each player car can compete with each other, the game screens of the respective game devices 10 are not synchronized, and the common display elements that should move in the same manner are different. There were problems such as timing operation.

Further, in the conventional multi-player game system, there may be a case where data transmission delays, transmission / reception omissions, etc. occur between the game devices 10 as described later. Therefore, in such a case, it is necessary to correct the data in some way.

For this reason, the arithmetic control unit 30 of the embodiment is formed so as to perform synchronous display control of the game screen while synchronizing with the other game device based on the data received from the other game device. .

In order to perform such a synchronous display control, the above-mentioned asynchronous counter 60 is provided in the game apparatus 10 of the embodiment.
Are provided, and a synchronization signal correction unit 36 is provided in the arithmetic control unit 30.

The asynchronous counter 60 is connected to the game device 1
Immediately after power-on of 0, a count operation for incrementing a count signal every 1/60 second is started. Since this counting operation is performed completely independently of the other game devices 10, this counter 60
Will be referred to as an asynchronous counter. The count signal of the asynchronous counter 60 is transmitted to another game device as a part of the board status information of FIG. 6, that is, an asynchronous count signal.

The synchronizing signal correction unit 36 calculates the synchronizing signal based on the count value of the synchronizing counter 60 of its own device and the other device count value received from the other game device 10 by the receiving RAM 52.
The amount of synchronization deviation of data received from another game device 10 is calculated for each game device.

Then, the game calculation section 32 performs a correction calculation for synchronous display control on a common display body appearing in the game space of both the own device and the other device based on the detected synchronization shift amount of each game device. It is formed as follows.

Further, the game calculation unit 32 of the embodiment is configured to control the other game devices 1 based on the calculated amount of synchronization deviation for each game device, data transmission delay, transmission / reception omission, and the like.
It is formed so that the correction calculation of data from 0 is performed at the same time.

Hereinafter, the method of the correction calculation will be described in detail.

As shown in FIG. 3, when data as shown in FIG. 6 is sequentially transmitted from the other seven game devices via the transmission line 24, the custom IC 56 transmits the received data to each game device. Write control is performed on the reception RAM 52 for each data. The receiving RAM 52 has three receiving areas, and when data is written in any of the areas, data is read from another area in which data has already been written. It is formed as follows.

Reception RAM 52 for which data writing has been completed
The data is read out from the operation control section 32 from the area. At this time, the synchronization signal correction unit 36
Out of the received data from the seven game devices having the smallest identification data among the received data for the seven vehicles written in 52,
The asynchronous count signal is read out, and the
Is performed, and the corrected synchronous count value is written and stored in the synchronous counter memory 62. This synchronization count value is used to synchronize the entire system.

The group setting section 34 includes a reception RAM
From the data of seven game devices written in 52, the received data of the own group is read out with reference to the group number. The synchronization signal correction unit 36
Based on the value of the asynchronous count signal included in the read reception data of each game device and the count value of the asynchronous counter 60 of the own game device, the amount of synchronization deviation of the reception data is calculated for each game device. Then, the game calculation unit 32
Corrects the received game device data to data synchronized with its own device based on the amount of synchronization deviation of each game device, and transfers the data to the work RAM 40. As a result, in the work RAM 40, the data of the game device in the same group as that of the user is written and stored in a state where the data has been corrected to the data synchronized with the user's own.

Then, the game calculation section 32 calculates the synchronous count value of the entire system stored in the synchronous count memory 62 and the work RAM 40 in accordance with the synchronous count value.
Based on the data of the game device of the same group written to the game device, the player character of the own device, the player character of the other device, and the display object other than the player character are synchronized with other game devices of the same group. The calculation of the appearing multi-player game is performed, and the calculation result is output to the image processing device 42.

In particular, the game calculation section 32 performs calculation so that a common display object appearing in the game space of another game device is displayed while synchronizing with the other game device. As a result, a game screen controlled to be displayed in synchronization with another game device is displayed on the display 18.

Calculation of the amount of synchronization deviation and correction processing accompanying the calculation
Sense Figure 8 and 9, a flowchart of the synchronization deviation amount calculation operation of the synchronizing signal correcting unit 36 is shown.

When the power is turned on and the game device 10 is connected to the transmission line 24, the custom IC 56
Starts the operation of receiving data from another game device. Then, when the reception data of the other game device is written into the reception RAM 52, the setting calculation of the basic count difference between the other game device 10 and the own device is performed. That is, the count difference between the own device count value of the own device's asynchronous counter 60 and the received other device count value of the asynchronous counter of the other game device is calculated, and this is counted as the basic count difference for each game device. Set in the difference memory 64. Then, the subsequent data synchronization correction calculation processing is performed based on the basic count difference.

That is, if the set basic count difference for each game device is correct, the subsequent count difference, that is, the count value of the asynchronous counter 60 of its own device, which is incremented every 1/60 second, is transmitted. The real-time count difference between the incoming game device and the other device count value should match the basic count difference. Based on such a concept, the synchronization signal correction unit 36 of the embodiment is used.
Calculates the amount of synchronization deviation of data received from another game device.

First, when data from another game device is written into the reception RAM 52, the count difference between the counter value of the own device and the counter value of the other device received data is calculated as a real-time count difference (step S10). ).

Next, the basic count difference from the other game device is read from the count difference memory 64, and the absolute value of the error A between the basic count difference and the real-time count difference calculated in step S10 is set to a predetermined upper limit ( In the example,
It is determined whether the upper limit is less than 2) (step S11).

If the absolute value of the error A is less than 2, it is determined that the correction of the basic count difference is not necessary, and step S1 is executed.
Based on the calculation formula 2, a correction value corresponding to the amount of synchronization deviation is calculated.

That is, the amount of synchronization deviation of the received data is originally the error A between the real-time count difference and the basic count difference. However, since there is a time lag due to data transmission / reception, data reception is delayed by at least one frame. Therefore, a value obtained by adding the value A for one frame to the error A is calculated as a correction value for synchronization.

If the data of the other game device for which the correction value has been obtained in this way is the data of a group that plays the same multiplayer game as the player, the synchronous correction calculation processing in step S22 shown in FIG. I do.

That is, using the correction value obtained by the synchronization signal correction unit 36, the game calculation unit 32 corrects the received data from another game device to data synchronized with its own device, and Transfer to RAM40. Here, a value obtained by multiplying the Z change amount and the X change amount by the correction value to the Z coordinate and the X coordinate of the player car included in the received data is added, and the player in the frame synchronized with the own machine is added. The Z coordinate value and the X coordinate value of the car are estimated and calculated.

Such correction calculation is performed on the assumption that the set basic count difference is correct. Therefore, if the counting operation is disturbed in the asynchronous counter 60 of each game device 10 constituting the system for some reason, it is preferable to correct the basic count difference.

In particular, when calculating the synchronization count value used for synchronizing the entire system, the correction of the basic count difference is indispensable.

In the system of the embodiment, the correction calculation of the basic count difference is performed in steps S11, S13 to S13.
Going at 17.

That is, when the synchronization signal correction unit 36 calculates the correction value, if the error A in step S11 is determined to be 2 or more of the upper limit, the basic value stored in the count difference memory 64 is determined. The operation of correcting the count difference is started (steps S13, S14... S17).

Then, it is determined whether the error A is plus 2 or minus 2 (S13, S15). If it is determined to be plus 2, the value obtained by subtracting 1 from the current basic count difference is added to the new basic count. Determined as difference, count difference memory 6
4 (step S14). If the error A is determined to be minus 2, a value obtained by adding 1 to the current value of the basic count difference is obtained as a new basic count difference, and is reset in the count difference memory 64 (S15).
In this way, the value of the basic count difference is corrected to a more appropriate value.

When it is determined that the value of the error A is 3 or more, it is determined that the set basic count difference is completely different from the original value, and the basic count difference is set to the error A. And reset to the count difference memory 64.

When a series of basic count difference correction operations are performed (S13 to S17), the corrected basic count difference is used for calculating the correction value in S12. Thereby, a more appropriate correction value can be obtained.

As described above, in order to synchronize the entire system, the embodiment calculates the synchronization count value.

That is, if the data of the other game device read from the reception RAM 52 to obtain the correction value is the data of the reference game device having the smallest board number, FIG.
The calculation of the synchronization count value shown in steps S20 and S21 shown in FIG.

For example, the 7 written in the reception RAM 52
When the data of the game device having the smallest board number is read from the data of the game devices, the correction value shown in FIG. 8 is calculated using the count value of the asynchronous counter included in the data.

Using the correction value calculated as described above,
Next, in steps S20 and S21 shown in FIG. 9, a value obtained by adding the correction value to the value of the count value of the other game device is calculated as a synchronous count value of the entire system, and this is written and stored in the synchronous counter memory 62. I do.

The game calculation section 32 determines the game count of the other game device based on the synchronization count value of the entire system written in the synchronization counter memory 62 and the received data written in the work RAM 40. The game calculation is performed such that the operation of all or a part of the common display object appearing in the space is synchronously controlled.

In particular, in the game device of the embodiment, when performing the correction calculation of the synchronous count value, the error determination in step S11 is always performed on the received count value from the basic game device. Then, when the error increases, an operation of always correcting the basic count difference set between the basic game device and the basic game device to an optimum value is performed.

Therefore, according to the game system of the embodiment, even when a phenomenon that impairs the synchronization of the entire system, for example, when the counting operation of the asynchronous counter 60 of the game apparatus 10 is disturbed, it is affected by this. Without correcting the basic count difference to an optimum value, the synchronous count value can be obtained by a correction operation.

As a result, each game device 10 can display a synchronized game screen as a whole system. In particular, each game device 10 set as a group
The game screen controlled synchronously with the other game devices of the same group can be satisfactorily displayed on the display of.

Next, in the system configured as described above,
An operation in the case of performing a multi-player game calculation will be described.

Specific Example of Synchronous Correction Calculation Operation FIG. 7 shows a specific flowchart of the above-described synchronization correction calculation operation.

First, as shown in FIG. 2, eight game devices 10-1, 10-2, 10-3,.
In 0-8, the game device with the smallest board number is 1
0-1 and assume that the game devices set as a group for the multiplayer are 10-2, 10-3, and 10-4.

In this case, the correction calculation processing of the game device 10-3 set as a group is performed as follows.

First, the other seven game devices 10-1 and 10-1
The transmission data from 0-2, 10-4,..., 10-8 is written into the reception RAM 52.

Next, the arithmetic control unit 30 sets the read data count value n = 1 (S31), and starts the read operation of the written data.

Then, it is determined whether or not the data of the set n = 1st game device has been written in the reception RAM 52, and if not, the value of n is incremented by one. (S36), it is determined whether or not there is the next n-th received data that has been incremented. Here, the reception data of the seven game devices is stored in the reception RAM 52.
, The reception data of the n = 1st game device is read from the reception RAM 52.

Then, it is determined whether or not the read data is the data of the basic game device (game device 10-1) (S33).

If it is determined in step S33 that the read data is data of the basic game device (10-1), first, a correction value is calculated according to the operation shown in FIG. S34).

Next, using this correction value, the correction calculation in step S21 of FIG. 9 is performed, and the synchronization counter value written in the synchronization counter memory 62 is updated (S35).

As a result, the synchronization count value of the game device 10 can be set to a value suitable for the entire system.

In particular, when the correction value is calculated in step S34 while correcting the basic count difference as shown in steps S11, S13 to S17 in FIG. 8 described above, a phenomenon that causes disturbance in synchronization of the entire system. Is generated, the synchronization count value of each game device 10 can be set to a value suitable for the entire system.

Next, it is determined whether or not the basic game device 10-1 is a game device belonging to the same group (S3).
8) If the data belongs to the same group, the arithmetic processing in step S40 is performed. If it is determined that the data does not belong to the same group, the process proceeds to step S36, and n is incremented by one. Here, since the basic game device 10-1 is not in the same group as the game device 10-3, the process proceeds from step S38 to step S36.

Also, in the above-mentioned determination in step S33,
If it is determined that the data is not the data of the basic game device, it is next determined whether or not the data is of the game device of the same group as the player (S38).

If it is determined that the data is not the data of the own group, steps S36, S37 and S3 are repeated.
The determination of 2, 33, 38, etc. is repeated.

If it is determined in step S38 that the data belongs to the same group, a correction value is calculated based on the amount of synchronization deviation (S39). The calculation of the correction value is specifically performed according to the operation flow shown in FIG.

Then, based on the correction value, the position data from the other game device is corrected to data synchronized with the own game machine as shown in step S22 of FIG. 9, and the corrected data is stored in the work RAM 40. Transfer to (S4
0). Thereafter, the value of n is incremented by one (S3
6).

Such reading and correction are performed when the value of n is 7
Is repeated until it is determined that the data reading of the seventh game device has been completed (S37), and the reading correction process for one frame is completed.

As described above, the game device 10 of the embodiment is
In -3, the synchronous counter value synchronized with the entire system is set in the synchronous counter memory 62, and the work RAM
Since the reception data corrected and calculated in synchronization with the own device is written in the game device 40, the game calculation unit 32 satisfactorily performs synchronous display with the other game devices 10-2 and 10-4 set as a group. The controlled game screen can be calculated and displayed on the display 18.

FIG. 11 shows game machines 10-2 and 10-3.
The timing of data transmission and reception between them is shown. Game device 1 receiving data transmission from game device 10-2
0-3 indicates the game device 10- due to a communication time lag.
2, the timing of the calculation of the same frame is delayed.

That is, in the system of the embodiment, when the game device 10-2 finishes calculating the frame A, for example, the writing of the frame A to the transmission RAM 54 is completed. Data reception is always delayed by one frame. For this reason, when the game device 10-3 performs the calculation of the frame B, for example, the received data of the frame A of the game device 10-2 is compared with the received data of the frame A by one screen as shown in step S12 of FIG. Then, a correction value for calculating the data is calculated, and then, as shown in step S22 of FIG.

Further, the game device 10-3 has a frame C
The same correction calculation process is performed at the time of calculation.

However, when the calculation of the frame D is performed, since the reception of the data of the frame C from the game device 10-2 has not been completed, as shown in FIG.
A situation occurs in which the player car which appears at the position indicated by -1 is displayed at the position 120-2 indicated by the alternate long and short dash line in the figure. In order to avoid such a situation, in the system of the embodiment, when the received data is lost, the data of the frame D two frames ahead is estimated by the arithmetic processing shown in FIGS. The player car is displayed at the position 120-1.

As described above, the game device 10 of the embodiment
In FIG. 12, the player car is alternately displayed at the position indicated by the solid line 120-1 and the position indicated by the broken line 120-2 in FIG. 12 due to omission of data transmission from another game device 10 set as a group. Such a situation can be prevented, and good image display can be performed.

FIGS. 4A and 4B show the game device 10.
One example of the game screens 100-1 and 100-2 displayed on the respective displays 18 of -2 and 10-3 is shown. In this scene, the scene is set such that when the leading player car passes a predetermined point on the racing course, fireworks are launched as display bodies. Game device 1
The game screen 100 when the 0-2 player car 120 passes the predetermined point at the head and fireworks are launched.
-1 is FIG. 4 (A).

At this time, the player device 120 of the game device 10-2 is chased up so that the game device 10-
The third player car 122 is running. In this case, the player car 120 is transferred from the game devices 10-1 to 10-3.
Is transmitted, the game device 10-3 performs a correction calculation of the amount of synchronization deviation of the received data, and sets the timing of launching fireworks in its own game space. . As a result, as shown in FIG. 4B, the display of the game device 10-3 shows that the fireworks are launched at the same timing as the launch of the fireworks 130 of the game screen 100-1 of the game device 10-2. The image is displayed as 100-2. In this way, the two game devices 10-2, 10
On the -3 game screens 100-1 and 100-2, it is displayed that the fireworks 130 as the common display are launched at the same timing.

FIGS. 10A and 10B show an example in which the common display is synchronously controlled based on the synchronous count signal calculated and set in the synchronous count memory 62 of each game apparatus 10. FIG. In the system of the embodiment, when a multi-player game is started between a plurality of game devices 10,
Each game device 10 starts the operation of waving the checkered flag 130 based on the synchronization count signal from the start of the game. At this time, the checker flag 130 is
It only exists in the game space and is not displayed on the display.

When the player cars of the game devices 10-1 and 10-2 finish one after another, the game screen 100- as shown in FIGS. 10A and 10B is displayed on the display 18 of each game device. 1,100-2 is displayed.
Even in this case, a window is opened in the game screens 100-1 and 100-2 of the two game devices 10-2 and 10-3, and the display 130 such as a checkered flag is similarly controlled while being synchronously displayed. Will be shaken. For this reason, two game screens 10 that display the same game space
0-1 and 100-2 can be seen without discomfort.

That is, in the system of the embodiment, the synchronous count value of each game device 10 is calculated while correcting the reference count value as described above. Therefore, even when a display object whose operation is controlled based on the value of the synchronous count value is displayed on the display, the synchronous display control can be performed without being affected by the disturbance of the counting operation of the asynchronous counter 60 or the like. can do.

Other Embodiments In the above embodiment, a case where a plurality of game apparatuses 10 are connected in a loop has been described as an example. However, the present invention is not limited to this, and the present invention is not limited to this. Various networks can be configured.

For example, as shown in FIG. 13, a plurality of game apparatuses 10-1 and 10-2 can be star-connected via a central station 61.

Further, as shown in FIG.
-1, 12-2,... May be connected to a tree to form a network, or a network connected in a mesh type as shown in FIG. The network may be formed by combining a loop type and a star type as shown in FIG.

In the above-described embodiment, the case where the drive game is played has been described as an example. However, the present invention can be applied to a system that plays other various multi-player games. For example, a multi-player game configured to cooperate or play a variety of sports with a plurality of players, or a configuration in which a plurality of players chase, hide, or shoot in a game space. Applicable to various games such as roll plane games.

In the above-described embodiment, fireworks, checker flags, and the like have been described as examples of display bodies for synchronous display control. However, the present invention is not limited to this. In addition, it is possible to perform synchronous display control of various display objects, for example, eruption of a volcano, launch of a rocket, pedestrian movement on the roadside, shooting stars, specific clouds flowing, occurrence of avalanches, and the like.

[0153]

According to the present invention, each game device determines the amount of synchronization deviation of received data based on its own count signal and another device count signal received from another game device. The calculation is performed for each device, and the received data from another game device is corrected to data synchronized with the own device, and a multi-player game screen is displayed on a display.

Thus, each of the game devices playing the multi-player game can display the multi-player game screen synchronously controlled on the display on the display, so that the viewer does not feel uncomfortable.

Further, according to the invention of claim 2, according to claim 1,
Using the technique described above, the multiplayer game in which the player character of the player's own device, the player character of the other device, and a common display body other than the player character appear in the game is performed, and the game screen is displayed on the display. can do.

Further, according to the third and fourth aspects of the present invention, based on the detected amount of synchronization deviation of each game device, data received from another game device is synchronized with its own data. And a multi-player game calculation is performed. Therefore, even if the next data of another moving player character is not sent due to transmission delay or the like, the current position of the player character is estimated and calculated based on the amount of synchronization deviation and displayed on the display. Can be done.

In this way, even when transmission / reception of transmission data is disturbed or delayed, synchronous display control is performed on the display of each game apparatus so that the player character of another game apparatus operates in a more natural manner. can do.

In particular, according to the invention of claim 4, each game device is formed so as to calculate not only the current position of the player character of the own device, but also the amount of change in the position, as transmission data to another device. . Therefore, even when the next data of another player character running is not transmitted due to a transmission delay or the like, the estimation calculation of the current position of the player character based on the amount of synchronization deviation can be performed more favorably.

According to the fifth aspect of the present invention, each game device obtains in advance the basic count difference between the count signal of its own device and the transmitted count signal of the other device and stores it in the count difference storage means. deep. Then, using the synchronization signal correction means, the real-time count difference between the count signal of the own device and the count signal of the other device is calculated, and based on the error between the real-time count difference and the basic count difference, a signal from another game device is used. The amount of synchronization deviation of the received data is detected.

Thus, each game device can more accurately and easily detect the amount of synchronization deviation received from each game device.

Further, according to the invention of claim 6, the basic count difference stored in the count difference storage means can be sequentially corrected based on the data actually transmitted / received to approach the optimum value. The amount of synchronization deviation can be detected more reliably.

According to the seventh aspect of the present invention, not only the relative synchronization deviation between the game devices but also the synchronization count signal, which is the basis of the entire system, is obtained by the correction operation, and each of the devices for playing the multiplayer game is obtained. Synchronous display control of a common display object appearing in the game space of the game device can be more easily performed.

Further, according to the invention of claim 8, the reference game device controls the synchronous display of the game screen based on the count signal of the own device, and converts the own device count signal into the reference synchronous count signal. And transmits it to another game device.

The other game device that receives the reference synchronization count signal corrects the synchronization deviation between the own synchronization count signal and the received reference synchronization count signal in real time, Calculate the signal. Then, based on the calculated synchronization count signal, the game device performs synchronous display control of the game screen of the own device.

Thus, it is possible to control the synchronous display of the game screen while synchronizing the entire system.

According to the ninth aspect of the present invention, the eighth aspect is provided.
Each of the game devices constituting the system can basically have the same configuration, thereby reducing the cost of the entire system.

According to the tenth aspect of the present invention, by setting a basic count difference between the count signal of the own device and the received reference synchronization count signal in advance, the synchronization deviation of the received reference synchronization count signal is obtained. The amount can be detected more easily and accurately.

According to the eleventh aspect, when the error calculated in the tenth aspect exceeds a predetermined reference value, the basic count difference value is corrected and calculated. Therefore, even if the count signal of any one of the game devices is not incremented for some reason, this can be detected as a phenomenon in which the error exceeds the reference value, and the basic count difference can be corrected to an optimum value. As a result, even when the counting operation of the asynchronous counting means of each game device is disturbed, the synchronous display control of the entire system can be favorably performed without being affected by the disturbance.

According to the twelfth aspect of the present invention, each game device performs a synchronous display control of a common display that appears in the game space of another game device based on the synchronous count signal. Thereby, even in a case where each of the game devices configuring the system individually performs the game calculation, the synchronous display control of the entire system can be more favorably performed.

In particular, by performing such a synchronous display control while correcting and calculating the value of the basic count difference, as described in the eleventh aspect of the present invention, the asynchronous display means is not affected by the disturbance of the counting operation of the asynchronous counting means. In addition, the synchronous display control of the common display can be favorably performed.

Further, according to the thirteenth and fourteenth aspects,
Synchronous display control for displaying the common display so as to operate in synchronization with each other on the game screen of each game device that performs the multiplayer game can be favorably performed.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing the appearance of a drive game system to which the present invention is applied.

FIG. 2 is an explanatory diagram showing an example of a connection state of the system shown in FIG.

FIG. 3 is a functional block diagram of a game device constituting the system of the embodiment.

FIG. 4 is an explanatory diagram showing an example of a game screen displayed on a display of each game device.

FIG. 5 is an explanatory diagram of data transmitted and received between game devices.

FIG. 6 is an explanatory diagram showing an example of the content of data transmitted and received between each game device.

FIG. 7 is a flowchart illustrating an example of a correction calculation process of the game system according to the embodiment.

FIG. 8 is a flowchart of an operation for calculating a correction value.

FIG. 9 is a flowchart of a data correction operation.

FIG. 10 is an explanatory diagram illustrating an example of a game screen of each game device.

FIG. 11 is an explanatory diagram of a principle that a data transmission delay between the game devices occurs.

FIG. 12 is an explanatory diagram of image disturbance generated due to omission of data reception.

FIG. 13 is an explanatory diagram of another network configuration of the game system of the present invention.

FIG. 14 is an explanatory diagram of another network configuration of the system of the present invention.

FIG. 15 is an explanatory diagram of another network configuration of the system of the present invention.

FIG. 16 is an explanatory diagram of another network configuration of the system of the present invention.

FIG. 17 is an explanatory diagram of another network configuration of the system of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Game device 16 Player 18 Display 22 Communication interface 24 Transmission line 30 Operation control unit 32 Game operation unit 36 Synchronization signal correction unit 60 Asynchronous counter 62 Synchronous counter memory 64 Count difference memory 100 Game screen 110 Racing course 120 Racing car 122 Racing car

Claims (14)

(57) [Claims] 1. A plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device views another game device while watching a game screen displayed on a display. A game system for a claim system configured to allow a multiplayer game to be played in a common game space with other players.
Te, an asynchronous counter means for outputting a count signal of its own, based on said other machine count signal from other game device that is the count signal and reception of its own, the synchronization of the received data from the other game apparatus A synchronization signal correction unit for detecting a shift amount for each of the other game devices; and, based on the detected shift amount of the synchronization with each of the game devices, synchronizing the received data from the other game device with the own device. A game calculating means for correcting the combined data to perform a multi-player game calculation; and an image processing means for displaying a multi-player game screen on the display based on the calculated game data. Game equipment . 2. The game processing device according to claim 1, wherein the game calculation means determines a player character of the own device and a player character of the other device based on an operation signal of the player, data received from another game device, and a predetermined game program. , the game apparatus characterized by a common display body other than the player character is formed to perform the calculation of the multiplayer game to appear. 3. The game calculation means according to claim 2, wherein the game calculation means corrects the data of the other player character included in the reception data to data synchronized with the own apparatus based on the detected synchronization deviation amount, A game device formed to perform a game calculation. 4. The synchronization calculation device according to claim 3, wherein the game calculation means is configured to calculate a current position and a position change amount of the player character of the own device as transmission data to another device, and the detected synchronization deviation amount Based on the current position and position change data of the other player character included in the received data, the current position of the other player character is corrected to position data in synchronization with the own device, and the game calculation is performed. A game device characterized by the above-mentioned. 5. The game device according to claim 1, wherein each game device stores a basic count difference between a count signal of its own device and a count signal of another device of another game device for each of the other game devices. The synchronization signal correction means calculates the real-time count difference between the own device count signal and the received other device count signal, and calculates the calculated real-time count difference and the basic count difference. A game device for detecting the amount of synchronization deviation of data received from another game device for each of the other game devices based on the error of the game device . 6. The synchronizing signal correction means according to claim 5, wherein when the calculated error exceeds a predetermined reference value, the synchronization signal correcting means performs a correction calculation of the value of the basic count difference corresponding to the other game device. A game device for correcting and storing a value of the basic count difference of the count difference storage means. 7. A game screen in which a plurality of game devices according to claim 1 are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device is displayed on a display. In a game system formed so that a multiplayer game can be performed in a common game space with a player of another game device while watching, a reference game device serving as a synchronization reference is determined from among the plurality of game devices, The apparatus includes a synchronization signal storage unit that stores a synchronization count signal, wherein the synchronization signal correction unit receives the count signal from the basic game device as a reference synchronization count signal, and receives the count signal of the own device and a reference that is received. Based on the basic count difference from the synchronous count signal,
The received reference synchronization count signal is corrected and stored in the synchronization signal storage unit as a synchronization count signal. The game calculation unit is also configured to store the synchronization count signal in a game space of another game device based on the synchronization count signal. A game system formed to perform a game calculation for performing synchronous display control of an operation of an appearing common display object. 8. A plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device views another game device while watching a game screen displayed on a display. A game system formed so that a multiplayer game can be performed in a common game space with the other players, wherein each of the game devices is formed to include an asynchronous counter unit that outputs a count signal of its own device, and serves as a reference. The game device is configured to perform a synchronous display control of the game screen based on the own device count signal, and transmit the own device count signal to another game device as a reference synchronous count signal, and receive the reference synchronous count signal. The other game device that performs the conversion includes the count signal of the game device itself and the received reference synchronization count signal. A synchronization signal correction means for real-time correcting a synchronization deviation amount of the received reference synchronization count signal and calculating a synchronization count signal, and performing synchronous display control of a game screen based on the synchronization count signal. A game system characterized by being performed. 9. The game device according to claim 8, wherein each of the game devices is formed to include both the asynchronous counter unit and the synchronization signal correction unit, and one of the plurality of game devices is set as the reference game device. A game system characterized by being performed. 10. The count difference storage according to claim 8, wherein the other game device stores a basic count difference between a count signal of the other game device and a reference synchronization count signal received from the reference game device. Means, wherein the synchronization signal correction means calculates a real-time count difference between the count signal of the own device and a received reference synchronization count signal, based on an error between the calculated real-time count difference and the basic count difference. A game system for detecting a synchronization deviation amount of a received reference synchronization count signal. 11. The synchronous signal correction means according to claim 10, wherein when the calculated error exceeds a predetermined reference value, the synchronization signal correction means corrects the value of the basic count difference, A game system wherein a value of a count difference is corrected and stored. 12. The game device according to claim 8, wherein each of the game devices, based on an operation signal of the player, data received from another game device, and a predetermined game program, Game calculation means for performing a multi-player game calculation in which a player character of the game machine and a common display body other than the player character appear; and an image for displaying a multi-player game screen on the display based on the calculated game data. And a processing unit, wherein the game calculation unit is configured to perform synchronous display control of all or a part of the operation of the common display body that also appears in the game space of another game device based on the synchronization count signal. A game system, characterized in that: 13. A plurality of independent game devices are connected via a data transmission line so that data can be exchanged with each other, and a player of each game device views another game device while watching a game screen displayed on a display. In a game system formed so that a multi-player game can be performed in a common game space with the player, data that is periodically transmitted and received between the game devices includes:
Based on the data of the other game devices received, including the data for detecting the synchronization deviation between the game devices, the common display objects other than the player characters appearing in the game of each game device operate in synchronization. A method for controlling a common display in a multi-player system, characterized by performing synchronous control. 14. The game device according to claim 13, wherein the game device uses a count signal of an asynchronous counter of each game device as data for detecting a synchronization deviation between the game devices. A multi-player system for detecting the amount of synchronization deviation of data received from another game device for each of the other game devices based on the other device count signal from the other game device. Control method of the common display body in.