JP7437884B2 - Game equipment and game cards - Google Patents

Description

The present invention relates to a game device and a game card.

2. Description of the Related Art Conventionally, game devices have been known that play a game by reading data recorded on a card. Such game devices play the game by placing game cards on the board, reading card data recorded on the back of the game cards, and devising combinations of multiple game cards and movement of the game cards. It is.

For example, Patent Document 1 discloses that an image sensor captures an image of a card from inside a card placement panel configured to transmit invisible light, allowing placement of multiple cards, and identifies the position of the card and the uniqueness of the game character printed on the card. An example of a card game device that executes a game by detecting information including data representing characteristics is described.

Japanese Patent Application Publication No. 2007-665

However, in conventional card game devices such as those described in Patent Document 1, information such as position and angle is simultaneously recognized while reading data on cards placed on a board that serves as a play field. Equipment such as a camera and a dedicated decoding board are required. Furthermore, in Patent Document 1, since information such as position and angle is processed simultaneously, the amount of information to be processed increases, which may increase the processing load on the processing device.

In view of the above problems, the present invention provides a game device and a game card that can reduce the processing load on a processing device and can detect card information with a simpler configuration.

In order to solve the above problems, a game device according to an embodiment of the present invention is, in one aspect, a game device that advances a game by moving a plurality of game cards, and in which each game card attached to a game card a first reader that reads different unique codes on the board, a board on which the game cards are placed after reading the unique code, and a second reader that reads the same fixed code for each game card attached to the game card on the board. a first storage device that assigns and stores a reading number to the unique code read by the first reading device; and a board of a game card that is recognized by the fixed code read by the second reading device. After the first reading device reads the unique code of one game card, one game card is placed on the board, and then the first reading device Until the player reads the unique code of the next game card, the second reading device reads the fixed code of the first game card on the board and extracts the position and angle information of the first game card. By associating the position angle information with the unique code and reading number of one game card, the card recognition means that recognizes the reading number, unique code and position angle information of one game card, and the recognition result of the card recognition means. The game device is provided with a game progress means for progressing the game based on the game information.

In one embodiment of the game device according to the embodiment of the present invention, the first reading device includes a sensor unit that reads a unique code and an illumination unit, and the sensor unit reads the unique code of one game card. After the second reading device finishes reading the fixed code of one game card, the illumination process of the lighting unit, the process of reading the unique code by the sensor unit, or both may be canceled. It is composed of

In another embodiment of the game device according to the embodiment of the present invention, the second reading device is arranged below the board surface, and the fixed code included in the game card arranged on the board surface having infrared transparency. The board includes an infrared camera for capturing an image of the board, and an infrared irradiation unit that irradiates infrared illumination light from below the board surface toward the board surface.

In another aspect of the game card according to the embodiment of the present invention, the imaging axis of the infrared camera is arranged obliquely with respect to the board surface, and the card recognition means is arranged such that the imaging axis of the infrared camera is diagonal to the board surface read by the second reading device. After projective transformation and color tone correction are performed on the trapezoidal image, position and angle information of the game card on the board is extracted.

In one embodiment of the game card according to the embodiment of the present invention, the extraction process of the position and angle information of the game card by the card recognition means is processed using a graphics processor.

In one embodiment, the game card according to the embodiment of the present invention further includes a monitor for displaying game information processed by the game progressing means.

In one embodiment, the game card according to the embodiment of the present invention further includes a reader/writer capable of reading and writing game data processed by the game progressing means into a recording medium.

In one embodiment of the game card according to the embodiment of the present invention, the fixed code has a U-shape having a short side and a long side.

In another aspect of the embodiment of the present invention, the game card used in the above game device includes a unique code consisting of a two-dimensional code containing different information for each game card, and a unique code at the same position for each game card. and fixed cords arranged to have the same shape.

According to the present invention, it is possible to provide a game device and a game card that can reduce the processing load on a processing device and can detect card information with a simpler configuration.

1 is a front view showing an example of a game device according to an embodiment of the present invention. 1 is a side view showing an example of a game device according to an embodiment of the present invention. 1 is a block diagram showing a configuration example of a game device according to an embodiment of the present invention. 1 is a schematic diagram showing an example of a game card according to an embodiment of the present invention. FIG. 2 is an explanatory diagram illustrating a processing procedure when reading a game card into the game device according to the embodiment of the present invention. 3 is a flowchart illustrating an example of a processing procedure of a game device according to an embodiment of the present invention. It is an explanatory view showing an example of image processing processed by card recognition means 101 included in the game device according to the embodiment of the present invention.

Embodiments of the present invention will be described with reference to the drawings. The embodiments shown below are illustrative of devices and methods for embodying the technical idea of this invention. It is not specific to anything.

FIG. 1 is an explanatory diagram showing an example of the appearance of a game device 1 according to an embodiment of the present invention. The game device 1 includes a housing 10 having a monitor 11 on the top for displaying game information including game progress information to the player.

On the operation surface 10a of the housing 10, there is a board 12 for placing a plurality of game cards 20 (not shown in FIG. 1), and a unique code 21 attached to each game card 20 that is different for each game card is read. A first reading device 13 is arranged. Further, on the operation surface 10a of the housing 10, there are an operation device 14 for the player to input instructions while the game is in progress, and a reader/writer 15 for reading and writing game data including game processing results into a recording medium such as an IC card. , a speaker 16 for outputting sound while the game is in progress, and a lighting device 17 such as an LED that turns on illumination light as necessary while the game is in progress.

As shown in FIG. 2, the front side of the housing 10 includes a coin insertion section 19a for inserting and removing coins for playing the game, and a card dispensing section for dispensing game cards 20 necessary for playing the game. 19b may be provided. Inside the housing 10, a second reading device 18 that reads information on the game card 20 on the board 12 from below the board 12, and a processing device 100 that executes various processes in the game device 1 are arranged. ing.

FIG. 3 shows an example of the overall configuration of the game device 1 according to the embodiment of the present invention. The processing device 100 is connected to a monitor 11, a first reading device 13, a second reading device 18, a reader/writer 15, and a terminal device 31, respectively, by, for example, a USB or DVI connection. The terminal device 31 is a device that connects to an external network to update software and manage information in the processing device 100, and uses a modem, for example.

The operating device 14, the lighting device 17, and the dispensing device 19 are connected to the processing device 100 via the I/O board 33. The payout device 19 includes a coin insertion section 19a and a card payout section 19b shown in FIG. A speaker 16 for outputting sound during the game and a volume 32 for adjusting the volume are connected to the processing device 100 via an amplifier board 34. Although not shown in the drawings, in addition to the configuration shown in FIGS. 1 to 3, the processing device 100 includes various devices including operation buttons for maintenance work, lighting devices for illuminating the board 12 and necessary parts of the game machine, etc. Of course, it may also be connected to.

As the processing device 100, a computer (PC) including a central processing unit (CPU), a graphics processor (GPU), and a storage device such as a RAM for performing predetermined calculation processing can be used. The processing device 100 can include, for example, a card recognition means 101, a game progressing means 102, and a storage device 103.

The card recognition means 101 performs processing for correlating and recognizing information held by a plurality of game cards 20 placed on the board 12 and position angle information on the board 12 when a player plays a game. The game proceeding means 102 executes the game based on the recognition result of each game card recognized by the card recognizing means 101 and the control program for executing the game stored in the storage device 103, and monitors the progress of the game on the monitor 11. It is also possible to perform processing to change the progress of the game in accordance with input from the player inputted from the operating device 14. The storage device 103 stores a control program for the game progressing means 102 to execute the game, various image data for displaying the progress of the game on the monitor 11, and includes a plurality of storage devices depending on the purpose. be able to.

The game card 20 can include a unique code 21 and a fixed code 22, as shown in FIG. The unique code 21 is a code that allows the game device 1 to recognize unique information that differs for each game card 20, for example, character information that differs for each card game, character characteristics, etc., and is, for example, a two-dimensional code. configured. As the two-dimensional code, any method such as a matrix type or a stack type can be used, and for example, a QR code (registered trademark) can be used.

The unique code 21 can be placed at any position on the game card 20, and may be a visible code or an invisible code. For example, the unique code 21 may be an invisible code, and the unique code 21 may be covered with a visible printing layer. In this case, the visible printing layer displays a pattern corresponding to the ink using an ink layer containing four color inks and white ink, and is configured to transmit light of a specific wavelength such as infrared rays. The unique code 21 placed under the visible printing layer can be made of ink that absorbs light of a specific wavelength, so that it cannot be visually recognized by the player.

The fixed code 22 is the same for each game card 20, and is arranged in the same position and in the same shape. The fixed code 22, like the unique code 21, can be placed at any position on the game card 20, and may be a visible code or an invisible code. For example, the fixed code 22 may be an invisible code, and the fixed code 22 may be covered with a visible printing layer.

For example, as shown in FIG. 4, the fixed cord 22 may have a U-shape having a short side 221 and a long side 222 facing each other. In the example of FIG. 4, the short side 221 and the long side 222 are arranged substantially parallel to each other, and are connected to each other via a side 223 that intersects substantially perpendicularly to the short side 221 and the long side 222. .

Since the fixed code 22 has a U-shape with opposing short sides 221 and long sides 222, the orientation of the game card 20 can be easily determined by using the coordinates and the coordinate difference between the corners or ends of the fixed code 22. The position and angle of the game card 20 can be easily recognized. For example, the card recognition means 101 recognizes the coordinates on the board 12 of points A, B, C, and D, which are the ends of the short side 221, the long side 222, and the side 223, and , D and the coordinate difference, information on the position and angle of the game card 20 on the board 12 can be extracted.

As shown in FIG. 1, the first reading device 13 is arranged adjacent to the board 12 on the operation surface 10a of the housing 10, so that the game card 20 between the first reading device 13 and the board 12 can be can be moved more easily. The first reading device 13 reads the unique code 21 included in the game card 20, and includes a sensor unit that reads the unique code 21, and an illumination unit that illuminates the unique code 21. Note that the lighting section may prompt the player to place the game card 20 at an appropriate location, and it goes without saying that the specific placement location of the lighting section is not particularly limited.

As the first reading device 13, for example, a two-dimensional code reader can be used. The unique code 21 of the game card 20 read by the first reading device 13 is stored in the storage device 103 with reading numbers assigned, for example, No. 1, No. 2, No. 3, etc., in the order of reading. The game card 20 whose unique code 21 has been read by the first reader 13 is placed on the board 12, as shown in FIG.

The board 12 has an area in which a plurality of game cards 20 can be movably arranged, and is made of, for example, a flat surface and an infrared transparent material so that the game cards 20 on the board 12 can be moved. ing. The board 12 has a first card in the center of the operation surface 10a so that the player can slide the game card 20 with the unique code 21 read by the first reader 13 onto the board 12 and place it there. It can be placed adjacent to the reading device 13.

The second reading device 18 is arranged below the board surface 12, as shown in FIG. The second reading device 18 includes an infrared camera for capturing an image of the fixed code 22 of the game card 20 placed on the board 12 that has infrared transparency, and an infrared camera that captures an image of the fixed code 22 of the game card 20 placed on the board 12 that transmits infrared light. and an infrared irradiation unit that irradiates illumination light.

The image captured by the infrared camera is subjected to image processing by the card recognition means 101 of the processing device 100, and position and angle information of the game card 20 is extracted. The extracted position and angle information of the game card 20 is stored in the storage device 103 together with the reading number. The position and angle information stored in the storage device 103 is constantly updated at predetermined timings. For example, position and angle information can be updated 30 times per second (30 fps). By associating the latest position and angle information of the game card 20 with the fixed code based on the previously recognized closest position and angle information, the information of the fixed code can be made to follow when the card is moved. Note that the frequency of extraction of the position and angle information of the game card 20 can be changed as appropriate depending on the processing capabilities of the CPU, GPU, etc. in the processing device 100.

By installing the infrared camera included in the second reading device 18 so that the imaging axis X is oblique to the board surface 12, the game device 1 can be made smaller. In this case, the infrared camera included in the second reading device 2 photographs the fixed code 22 of the game card 20 obliquely, so the acquired image of the board 12 becomes a trapezoidal image.

When extracting the position and angle information, the card recognition means 101 performs projective transformation on the trapezoidal image captured by the infrared camera of the second reading device to perform trapezoidal correction processing. This makes it easy to extract appropriate positional and angular information of the game card 20 on the board 12, and allows the game device 1 to be downsized. In order to further improve the recognition accuracy of the card recognition means 101, it is preferable to perform projective conversion and then further perform binarization processing, for example, to perform color tone correction so that the image becomes a black and white image.

A plurality of operating devices 14 are provided on the left and right sides of the board 12 on the operating surface 10a. Additional information can be given to the game executed by the game progressing means 102 by the player inputting an instruction via the operating device 14 at a predetermined timing. The reader/writer 15 may include, for example, an IC card reader, and is configured to be able to save game results in a storage IC card separate from the game card 20.

(Game execution procedure)
Next, an example of a game execution procedure using the game device 1 according to the embodiment of the present invention will be explained using the explanatory diagrams of FIGS. 1 to 5 and the flowchart of FIG. 6. Note that the examples shown in FIGS. 1 to 6 are for illustrative purposes, and it goes without saying that the present disclosure is not limited to the examples shown in FIGS. 1 to 6.

In step S1, when the player inserts a coin through the coin insertion unit 19a of FIG. 2, the game progressing means 102 of FIG. 3 starts the game by processing a predetermined control program stored in the storage device 103. let

In step S2, the game proceeding means 102 prompts the player to read the IC card in his/her possession using the reader/writer 15 by providing guidance on the monitor 11 or by proceeding with the lighting process of the illumination device of the reader/writer 15. The reader/writer 15 reads the IC card as necessary, and stores the player's game information written on the IC card in the storage device 103.

In step S3, the game proceeding means 102 prompts the player to select a game mode. The game mode is not limited to the following, but may include, for example, a "card purchase mode" for purchasing a new game card 20 and a "game mode" for playing a game. If the player selects the "card purchase mode" via the operating device 14, the process advances to step S21, and a new game card 20 is dispensed via the card dispensing unit 19b. In step S22, if more coins are inserted through the card payout section 19b, the process returns to step S21, and a new game card 20 is paid out via the card payout section 19b. In step S22 following step S21, if no new coins are inserted, and if the number of game cards 20 paid out in step S21 reaches the maximum number, the process advances to step S12.

On the other hand, if the "game mode" is selected by the player in step S3, the process advances to step S4. In step S4, a new game card 20 is paid out via the card payout section 19b. In step S5, the game proceeding means 102 prompts the player to select an opponent via the monitor 11. After the player selects an opponent via the operating device 14, the process advances to step S6.

In step S6, the unique code 21 of the game card 20 used in the game is read. Specifically, a lighting unit (not shown) included in the first reading device 13 illuminates the unique code 21, and a sensor unit (not shown) reads the unique code 21. At the same time, the first reading device 13 is turned on to prompt the player to read the game card 20. As shown in FIG. 5, when the game card 20 is placed on the sensor section of the first reading device 13 by the player, the sensor section reads the information of the unique code 21 included in the game card 20. Reading numbers are assigned to the unique codes 21 read by the sensor section in the order in which the game cards 20 are read, and information about the game cards 20 in which the unique codes 21 and the reading numbers are associated is stored in the storage device 103.

In step S6, the game card 20 whose unique code 21 has been read by the first reading device 13 is moved by the player to an arbitrary position on the board 12, as shown in FIG. Note that after the first reading device 13 has completed reading the unique code 21, the area around the board surface 12 may be illuminated with illumination light. The player can be prompted to move the game card 20, and the recognition process of the game card 20 can proceed more smoothly.

In step S7, the second reading device 18 reads the fixed code 22 of the game card 20 placed at an arbitrary position on the board 12. Here, for example, an infrared irradiation unit (not shown) included in the second reading device 18 irradiates infrared illumination light toward the board surface 12 from below the board surface 12, and an infrared camera provided in the second reading device 18 , an image of the fixed code 22 provided on the game card 20 is captured. The card recognition means 101 in FIG. 3 recognizes the fixed code 22 of the game card 20 on the board 12 from the image captured by the second reading device 18, and information about the position and angle (tilt) of the game card 20 on the board. Extract position and angle information including

As a method for extracting the position and angle information from the fixed code 22, for example, it can be performed by image processing the fixed code 22 having the shape shown in FIG. The fixed cord 22 consists of three straight lines of different lengths, the long side 222 and the side 223 being perpendicular to each other, and the short side 221 and the side 223 being perpendicular to each other. Points A, B, C, and D that are to be recognized are respectively attached. Then, the card recognition means 101 measures the coordinates and coordinate differences of each point A to D within the board surface 12 through image processing, thereby extracting information on the position and angle of the game card 20 within the board surface 12.

For example, the card recognition means 101 extracts the coordinates of point B of the fixed code 22 of the game card 20 as the coordinates of the position of the game card 20, and extracts the coordinates of the adjacent point B and point A, and the coordinates of point B and point C. Information on the inclination, that is, the angle, of the game card 20 can be extracted from the difference. Position and angle information of the game card 20 on the board 12 is stored in the storage device 103.

In step S7, the card recognition means 101 further associates the extracted position and angle information of the game card 20 with the unique code 21 of the game card 20 stored in the storage device 103 and the information on the reading number, and stores the associated information. The data is stored in the storage device 103. In this way, the reading number, unique code 21, and position angle information of one game card 20 placed on the board 12 are linked to each other, so that the position and information of each game card 20 can be determined. It is recognized by the processing device 100.

The recognition process for the game cards 20 executed in steps S6 and S7 is repeated a predetermined number of times. In this way, after reading the unique code 21 of one game card 20, the fixed code 22 of one game card 20 is read, and the card recognition means 101 reads the unique code 21 of one game card 20 on the board 12. The operation of recognizing the position and angle information and storing the read unique code 21 information and position and angle information in the storage device 103 in association with the reading number is performed sequentially on the plurality of game cards 20. . When all the game cards 20 have been processed, the process advances to step S8, and a game start guide is displayed on the monitor 11.

In step S9, the arrangement of the game cards 20 on the board 12 is changed by the player, and the formation of the game is determined. While the arrangement of the game cards 20 is being changed, in order to follow the movement of the game cards 20, the second reading device 18 acquires images of the plurality of game cards 20 arranged on the board 12, and performs card recognition. The means 101 recognizes the position and angle information of each game card 20 classified by reading number, and updates the information by storing the recognition result in the storage device 103 in association with the reading number.

The latest position and angle information recognized by the second reading device 18 is extracted at regular intervals (for example, about 30 times per second). In this way, the card recognition means 101 associates the position and angle information closest to the position and angle information recognized immediately before with the reading number with the unique code of each game card 20, thereby identifying the game card 20 in step S9. It becomes possible to make the information of the unique code 21 follow the movement of.

In step S10, the game progression means 102 advances the game based on the recognition result of each game card 20 by the card recognition means 101. The changing of the card arrangement of the game cards 20 in step S9 and the game progress process in step S10 can be divided into "first play" and "second play" and repeated multiple times, for example. When the processing of steps S9 to S10 is repeated a predetermined number of times, the end of the game is announced via the monitor 11 in step S11.

When the end of the game is announced, the game proceeding means 102 proceeds with the guidance on the monitor 11 or the lighting process of the illumination device of the reader/writer 15 in step S12. This prompts the player to write the game result (game information) using the reader/writer 15 of the IC card that the player owns. The reader/writer 15 performs writing to the IC card as necessary, and ends the process.

Conventional game devices constantly read the data on the cards placed on the board 12, which serves as the playing field, and simultaneously recognize information such as the card's position and angle. It was necessary. Further, the processing for extracting the position and angle of the card is also complicated, which may increase the burden on the processing device 100.

On the other hand, in the game device 1 according to the embodiment of the present invention, before proceeding with the game, reading processing is performed on a plurality of game cards 20 while assigning reading numbers in the reading order, and a fixed code with a specific reading number is read. By extracting the position and angle information at regular time intervals through image analysis, it becomes possible for the processing device 100 to easily recognize the movement status of the game card 20. As a result, the processing load on the processing device 100 can be reduced compared to the card recognition processing performed by conventional game devices.

Further, in the game device 1 according to the embodiment of the present invention, the recognition process for one game card 20 used in the game includes (1) reading the unique code 21 of the one game card 20, and (2) reading the board 12. Reading the fixed code 22 of the first game card 20 placed above and associating the read fixed code 22 with the reading number, (3) One game placed on the board 12 based on the reading result of the fixed code 22 Extraction of position and angle information of card 20 (4) Association of extracted position and angle information of one game card 20, unique code 21, and reading number, four processes are performed in order. Therefore, if the player mistakenly does not place the next game card 20 in the appropriate place while the above processes (1) to (4) are being performed, the information will be read incorrectly, and the first game card 20 will be incorrectly placed. There is a possibility that it will not be possible to properly recognize the next game card 20.

According to the game device 1 according to the embodiment of the present invention, when reading the unique codes 21 and fixed codes 22 of a plurality of game cards 20 by repeating steps S6 to S7, the first reading device 13 After reading the unique code 21 of one game card 20 by the sensor unit equipped with the sensor unit and until the second reading device 18 completes reading the fixed code 22 of one game card 20, the unique code of the illumination unit Control is performed to stop the irradiation to 21, the reading process of the fixed code by the sensor unit, or both. In this way, by appropriately controlling the timing of reading the unique code 21 and fixed code 22 of the first reading device 13 and the second reading device 18, a plurality of games can be played in the order in which the plurality of game cards 20 are read. The processing device 100 can be made to recognize the information on the card 20.

As shown in FIG. 2, when the imaging axis X of the infrared camera included in the second reading device 18 is arranged obliquely to the board surface 12, it is possible to downsize the device; As shown in the left diagram of FIG. 7, the image 40 of the board 12 becomes a trapezoidal image. The card recognition means 101 according to this embodiment can correct the trapezoidal image into a rectangular image by performing projective transformation on the trapezoidal image of the board 12 read by the second reading device 18. Furthermore, for example, the card recognition means 101 according to the present embodiment performs color tone correction through binarization processing, thereby making it easier to recognize the boundary between the game card 20 and the board 12, as shown in the right diagram of FIG. . The card recognition means 101 extracts the coordinates of a specific point of the fixed code in this rectangular image and the coordinate difference between the specific points by image processing, and extracts the position angle information of the game card 20. Position and angle information can be recognized more accurately.

Note that it is preferable that the image analysis process executed by the above-described card recognition means 101 be performed using a GPU included in the processing device 100. By performing the image analysis processing according to the present embodiment using the GPU, the processing load on the processing device 100 can be reduced and the processing can be performed at high speed, compared to when image processing is performed using the CPU. Since there is no need for a dedicated decoding board for image analysis, it is possible to provide the game device 1 with a simpler configuration.

As described above, the embodiments of the present invention have been described, but the statements and drawings that form part of this disclosure should not be understood as limiting the invention. It goes without saying that the present invention includes various aspects not explicitly shown here, and can be modified and embodied in the implementation stage without departing from the gist thereof.

1... Game device 10... Housing 10a... Operation surface 11... Monitor 12... Board surface 13... First reading device 14... Operating device 15... Reader/writer 16... Speaker 17... Lighting device 18... Second reading device 19... Payout Device 19a...Coin insertion unit 19b...Card payout unit 20...Game card 21...Unique code 22...Fixed code 31...Terminal device 32...Volume 33...I/O board 34...Amplifier board 40...Trapezoidal image 100...Processing device 101... Card recognition means 102...Game proceeding means 103...Storage device 221...Short side 222...Long side

Claims (9)

A game device that advances a game by moving a plurality of game cards,
a first reading device that reads a unique code attached to the game card that is different for each game card;
a board surface on which the game card is placed after reading the unique code;
a second reading device that reads the same fixed code for each game card attached to the game card on the board;
a first storage device that assigns and stores a reading number to the unique code read by the first reading device;
a second storage device that stores position angle information on the board of the game card recognized by the fixed code read by the second reading device;
After the first reading device reads the unique code of one game card, the one game card is placed on the board, and then the first reading device reads the unique code of the next game card. In the meantime, the second reading device reads the fixed code of the first game card on the board to extract the position and angle information of the first game card, and extracts the extracted position and angle information. card recognition means that recognizes the reading number, the unique code, and the position angle information of the one game card by associating them with the unique code and the reading number of the one game card;
A game device comprising: game proceeding means for proceeding with the game based on the recognition result of the card recognizing means. The first reading device,
a sensor unit that reads the unique code;
Equipped with a lighting section and
After the sensor unit reads the unique code of the first game card and until the second reading device completes reading the fixed code of the first game card, the lighting unit performs an irradiation process. 2. The game device according to claim 1, wherein the game device is configured to cancel reading processing of the unique code by the sensor unit, or both. the second reading device,
an infrared camera disposed below the board surface and having infrared transparency for capturing an image of the fixed code provided on the game card disposed on the board surface;
The game device according to claim 1 or 2, further comprising: an infrared irradiation unit that irradiates infrared illumination light toward the board from below the board. The imaging axis of the infrared camera is arranged obliquely to the board surface,
The card recognition means extracts the position angle information of the game card on the board after performing projective transformation and color tone correction on the trapezoidal image of the board read by the second reading device. The game device according to claim 3. 5. The game device according to claim 1, wherein the process of extracting the position and angle information of the game card by the card recognition means is performed using a graphics processor. The game device according to any one of claims 1 to 5, further comprising a monitor for displaying game information processed by the game progressing means. The game device according to any one of claims 1 to 6, further comprising a reader/writer capable of reading and writing game data processed by the game progressing means into a recording medium. The fixed cord has a U-shape with opposite short sides and long sides, the short side and long side are arranged substantially parallel, and the fixed cord is substantially perpendicular to the short side and long side. The game device according to any one of claims 1 to 7, wherein the game device has a shape that is connected to each other via intersecting sides. A game card used in the game device according to claim 8 ,
a unique code consisting of a two-dimensional code containing different information for each game card;
A fixed code arranged in the same position and in the same shape for each of the game cards.

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