JP2019170457A - Takeover of game data between different platforms - Google Patents

Abstract

To achieve takeover of game data between two platforms on which different user accounts are used respectively.SOLUTION: The method is a method for taking over dame data on a first platform 1A of a user stored in association with first user identification information, to a second platform 1B on which second user identification information is used for identifying a user from the first platform 1A on which the first user identification information is used for identifying the user. The method comprises: a step for generating link data for associating the second user identification information included in an identification code which is output by a second client device 20 and read by a first client device 10 with the first user identification information; and a step for identifying the game data based on the second user identification information and the link data, then providing the game to the second client device 20 using the game data.SELECTED DRAWING: Figure 1

Description

  The disclosure herein relates to the transfer of game data between different platforms.

  The same title game may be offered on multiple different platforms. For example, a game with the same title may be provided in both a smartphone version and a personal computer (PC) version. The smartphone version of the game is provided on the smartphone platform, and the PC version of the game is provided on the PC platform.

  As the game progresses, game data is accumulated for each user. However, game data accumulated through game play on one platform cannot be used from other platforms. For example, game data accumulated by executing a game on a smartphone platform cannot be used from a game executed on a PC platform.

  There is a need to continue playing the same game on a different platform than the one you are using. For example, when a user buys an electronic device to be used for game play, wants to play a game played on a PC on a smartphone, or wants to play a game played on a smartphone on a PC, etc. There is a need to play games on a new platform rather than the platform.

  In order to meet such needs, it is necessary to hand over the game data accumulated in the platform being used to the platform that is newly used. Conventional game data takeover is performed by issuing a takeover code for taking over game data in the transfer source platform and receiving the input of the takeover code in the transfer destination platform. The takeover code is usually a numeric string of approximately 5 to 10 digits. Non-Patent Document 1 below describes a game data transfer method using a transfer code issued from a migration source platform.

  Another example of the prior art for taking over game data is disclosed in Japanese Unexamined Patent Application Publication No. 2017-213192 (Patent Document 1). Patent Document 1 discloses a method of taking over game data from another game device linked to the same account as the own device using data managed by an access point that establishes a wireless LAN. .

JP 2017-213192 A

“Notice Yu-Gi-Oh! Duel Links”, [online], search on March 5, 2018, Internet (URL: https://www.konami.com/yugioh/duel_links/ja/notice/1/)

  Conventionally, game data can be transferred only when a unified user account is used in the migration source platform and the migration destination platform. To date, there is no known method for transferring game data between two platforms whose user accounts are not unified.

  Even when different user accounts are used for the migration source platform and the migration destination platform, it is desirable to be able to transfer game data between these platforms.

  The purpose of the present disclosure is to provide technical improvements that solve or mitigate at least some of the problems of the prior art described above. One of the more specific purposes of the present disclosure is to allow game data to be transferred between two platforms where different user accounts are used.

  One aspect of the present invention is to identify a user from a first platform in which first user identification information is used to identify the user by one or more computer processors executing computer readable instructions. The present invention relates to a method for handing over game data on the first platform of the user stored in association with the first user identification information to a second platform in which second user identification information is used. According to one aspect, a method of generating an identification code by encoding identification data including the second user identification information, and outputting the identification code in a second client device using the second platform. An output step; a reading step of reading the identification code in the first client device using the first platform; and the second user identification information included in the identification code read by the first client device. Generating link data associating the first user identification information with the second user identification information and the link data, specifying the game data on the second client device Providing a game using.

  In one aspect of the present invention, the identification code is an optically readable code.

  In one aspect of the present invention, the identification code is displayed on a display of the second client device.

  A method according to an aspect of the present invention provides a completion notification to the second platform in response to the second user identification information included in the identification code being associated with the first user identification information. A transmission step of transmitting is further provided.

  The method according to an aspect of the present invention further includes the step of starting the game on the second client device in response to the completion notification being received at the second platform.

  In one aspect of the present invention, the identification code further includes a nonce, and the completion notification is generated to include the nonce included in the identification code received from the first client device.

  In one aspect of the present invention, when the identification data is provided with an electronic signature and the identification data is determined to be valid using a public key, the second user identification included in the identification code The information is associated with the first user identification information.

  In one aspect of the present invention, the identification code further includes expiration date information indicating an expiration date, and the second code included in the identification code when the expiration date included in the identification code has not passed. User identification information is associated with the first user identification information.

  In one aspect of the present invention, the identification code further includes an issuer name indicating the issuer, and the issuer name included in the identification code is valid when the issuer name is valid. Second user identification information is associated with the first user identification information.

  One aspect of the invention is implemented on one or more computer processors to provide a second user identification for identifying the user from a first platform where the first user identification information is used to identify the user. The present invention relates to a program for taking over the game data in the first platform of the user stored in association with the first user identification information to a second platform in which information is used. The program outputs the identification code to the one or more computer processors in a step of generating an identification code including the second user identification information, and a second client device using the second platform. An output step, a reading step of reading the identification code in the first client device using the first platform, and the second user identification included in the identification code read by the first client device An association step of associating information with the first user identification information, and a game providing step of providing a game using the game data to the second client device are executed.

  One aspect of the present invention provides an implementation of the user from a first platform in which first user identification information is used to identify a user to a second platform in which second user identification information is used to identify the user. The present invention relates to a system for taking over game data in the first platform. The system includes one or more processors and a storage that stores game data of the user on the first platform in association with the first user identification information. The one or more computer processors execute computer-readable instructions to encode identification data including the second user identification information to generate an identification code, and use the second platform. In the second client device, the identification code is output, and in the first client device using the first platform, the identification code is read and included in the identification code read by the first client device Link data associating the second user identification information with the first user identification information is generated, the game data is specified based on the second user identification information and the link data, and the second client device On the other hand, a game is provided using the game data.

  The embodiment of the present invention enables game data to be transferred between two platforms using different user accounts.

It is a block diagram which shows the game processing system by one Embodiment. It is a figure explaining the information memorize | stored in the game processing system of FIG. It is a figure explaining the information memorize | stored in the game processing system of FIG. It is a figure explaining the information memorize | stored in the game processing system of FIG. It is a figure explaining the information memorize | stored in the game processing system of FIG. It is a sequence diagram for demonstrating the process in the game processing system by one Embodiment. It is a schematic diagram which shows the example of the display image displayed on the client apparatus contained in the game processing system by one Embodiment. It is a schematic diagram which shows the example of the identification code displayed on the client apparatus contained in the game processing system by one Embodiment.

  Hereinafter, various embodiments of the present invention will be described with reference to the drawings as appropriate. In the drawings, the same or similar components are denoted by the same reference numerals.

  A game processing system 1 according to an embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a block diagram showing a game processing system 1 according to an embodiment, and FIGS. 2 to 5 are diagrams for explaining information stored in the game processing system of FIG.

  As illustrated, a game processing system 1 according to an embodiment of the present invention includes a platform 1A, a client device 10 that uses the platform 1A, a platform 1B, a client device 20 that uses the platform 1B, and a storage 100. Prepare. The client device 10 is an example of a first client device, and the client device 20 is an example of a second client device. In this specification, it is assumed that the client device 10 and the client device 20 are used by the same user A.

  The platform 1A includes a platform server device 30 and a game server device 50. The platform 1A is an example of a first platform. The platform 1B includes a platform server device 40 and a game server device 60. Platform 1B is an example of a second platform.

  The client device 10, the client device 20, the platform server device 30, the platform server device 40, the game server device 50, the game server device 60, and the storage 100 are connected to be communicable with each other via the network 5. The network 5 may be a single network or may be configured by connecting a plurality of networks. The network 5 is, for example, the Internet, a mobile communication network, and a combination thereof. As the network 5, any network that enables communication between electronic devices can be applied.

  In the illustrated embodiment, the client device 10 is a smartphone and the client device 20 is a personal computer (PC). The client device 10 may be a mobile phone, a tablet terminal, a personal computer, an electronic book reader, a wearable computer, a game console, a head-mounted display, and various other information processing devices in addition to a smartphone. It should be noted that the client device 20 may be a smartphone, a mobile phone, a tablet terminal, an electronic book reader, a wearable computer, a game console, a head-mounted display, and various other information processing devices other than the PC. . In the following description, for simplicity of explanation, an exemplary embodiment in which the client device 10 is a smartphone and the client device 20 is a PC will be described.

  The platform server device 30 is a server device for providing a first platform service to a client device, and the platform server device 40 is a server device for providing a second platform service to a client device. is there. The first platform service provided by the platform server device 30 and the second platform service provided by the platform server device 40 include, for example, a game platform service, an application software download service, a payment service, a video distribution service, and the like. A communication service for interacting with the user, and various network services other than these. When the platform server device 30 provides the game platform service, the platform server device 30 has link information to a plurality of games, and provides the link information to the client device 10 that has accessed the platform server device 30. can do. The user can start playing the game by selecting link information to a desired game by an operation input to the client device 10.

  Platform server device 30 and platform server device 40 may be configured to provide platform services to a particular type of client device or a particular type of client application. For example, the platform server device 30 and the platform server device 40 provide a first platform service to a target client device selected from a smartphone, a tablet, a PC, a specific game console, and a specific client device other than these, The first platform service may not be provided to client devices other than the target client device. In another example, the platform server device 30 and the platform server device 40 may have a specific operating environment (for example, iOS (trademark), Android (trademark), Windows (trademark), Mac OS (trademark), or any other specific environment. The first platform service is provided to the target client device having the operating system or application software), and the first platform service is provided to the client device (client device other than the target client device) that does not have this specific operating environment. It may be configured not to provide platform services.

  In the illustrated embodiment, since the client device 10 is a smartphone, the platform server device 30 is a smartphone platform server device configured to provide the first platform service to the smartphone. Since the client device 20 is a PC, the platform server device 40 is a PC platform server device configured to provide the second platform service to the PC. In this case, even if the platform server device 30 receives an account registration request from a device other than a smartphone (for example, a PC), the platform server device 30 does not provide a platform service according to the request. A user who wants to receive the first platform service from the platform server device 30 accesses the platform server device 30 via a smartphone. Similarly, even if the platform server device 40 receives an account registration request from a device (for example, a smartphone) other than the PC that is the service providing target, the platform server device 40 does not provide the platform service according to the request. A user who wants to receive the second platform service from the platform server device 40 accesses the platform server device 40 via the PC.

  A user who wants to receive provision of the first platform service from the platform server device 30 performs account registration for the first platform service. The user can receive the first platform service from the platform server device 30 by performing account registration for the first platform service. For this account registration, the user provides predetermined user information (for example, user name, email address, and age) to the platform server device 30 via the client device 10. When registration of an account for using the first platform service is completed, the user is assigned user identification information for identifying the user in the first platform service. In this specification, user identification information assigned to receive provision of the first platform service may be referred to as first user identification information or first user ID.

  A user who wants to receive provision of the second platform service from the platform server device 40 performs account registration for the second platform service. The user can receive the second platform service from the platform server device 40 by performing account registration for the second platform service. For this account registration, the user provides predetermined user information (for example, user name, mail address, and age) to the platform server device 40 via the client device 20. When registration of an account for using the second platform service is completed, the user is assigned user identification information for identifying the user in the second platform service. In this specification, user identification information assigned to receive provision of the second platform service may be referred to as second user identification information or second user ID.

  A user to whom the first user ID is assigned can receive the provision of the first platform service by accessing the platform server device 30 via the client device 10 and logging in using the first user ID and password. it can. Similarly, a user who is assigned a second user ID accesses the platform server device 40 via the client device 20 and logs in using the second user ID and password, thereby providing the second platform service. Can receive.

  In FIG. 1, only one client device 10 is shown, but the number of client devices 10 included in the platform 1 is arbitrary. Similarly, the number of client devices 20 included in the platform 2 is also arbitrary. That is, the platform 1 may include a plurality of client devices 10, and each of the plurality of client devices 10 can receive provision of the first platform service from the platform server device 30. Similarly, the platform 2 may include a plurality of client devices 20, and each of the plurality of client devices 20 can receive provision of the second platform service from the platform server device 40.

  The game server device 50 is configured to provide an online game service to the client device 10. The client device 10 can receive an online game service from the game server device 50 by logging in using the first user ID. For example, the game server device 50 uses a game message received from the client device 10 (for example, a message related to the operation of the player character or a message that a quest is to be started) as a predetermined game logic (or to realize the game logic). The game is advanced by transmitting the processing result to the client device 10. Similarly, the game server device 60 is configured to provide an online game service to the client device 20. The client device 20 can receive an online game service from the game server device 60 by logging in using the second user ID. Each of the game provided by the game server device 50 and the game provided by the game server device 60 may be a smartphone version and a PC version of a game having the same title. The functions of the game server device 50 and the game server device 60 may be provided by one game server device.

  The game server device 50 and the game server device 60 realize various games. In the game provided by the game server device 50 and the game server device 60, a game medium may be used. A game media is electronic data used for a game and may be acquired, owned, used, managed, exchanged, combined, enhanced, sold, discarded, or gifted by the user in a game, or otherwise used. Examples of game media include cards, items, virtual currencies, tickets, characters, avatars, level information, status information, parameter information (such as health values and attack power), ability information, skills, abilities, spells, jobs, and others Various electronic data that can be used in games. The game media that can be used in the game processing system 1 and the usage mode thereof are not limited to those specified in this specification.

  The client device 10 includes a processor 11, a communication I / F 12, a display 13, and a storage 14. The client device 20 includes a processor 21, a communication I / F 22, a display 23, and a storage 24.

  The platform server device 30 includes a processor 31, a communication I / F 32, and a storage 33. The platform server device 40 includes a processor 41, a communication I / F 42, and a storage 43.

  The game server device 50 includes a processor 51, a communication I / F 52, and a storage 53. The game server device 60 includes a processor 61, a communication I / F 62, and a storage 63.

  The processors 11, 21, 31, 41, 51, 61 are arithmetic devices that load an operating system and various programs into a memory and execute instructions included in the loaded programs. The computer processors 11, 21, 31, 41, 51, 61 are, for example, a CPU, MPU, DSP, GPU, various other arithmetic devices, or a combination thereof. The processor 11 may be realized by an integrated circuit such as an ASIC, PLD, FPGA, or MCU.

  The communication I / Fs 12, 22, 32, 42, 52, 62 are implemented as hardware, firmware, communication software such as a TCP / IP driver or a PPP driver, or a combination thereof. The client device 10, the client device 20, the platform server device 30, the platform server device 40, the game server device 50, and the game server device 60 are connected to other devices via the communication I / Fs 12, 22, 32, 42, 52, 62. Can send and receive data.

  The displays 13 and 23 are a liquid crystal display, an organic EL display, or any information display device capable of displaying an image other than these. The displays 13 and 23 may have a touch panel that can detect the touch operation (contact operation) of the player.

  The storages 14, 24, 34, 44, 54, and 64 are, for example, magnetic disks, optical disks, semiconductor memories, or various other storage devices that can store data.

  The storages 14 and 24 store various programs such as a game processing program. The storages 14 and 24 may store various data used in the game.

  Information necessary for providing the first platform service is stored in the storage 33, and information necessary for providing the second platform service is stored in the storage 43. The information necessary for providing the first platform service includes, for example, account information of a user who has registered an account, moving image data to be distributed to the registered user, and payment information necessary for the registered user to make a payment ( For example, information related to the user's credit card) and various information necessary for providing the first platform service other than these are stored. The information necessary for providing the second platform service is the same as the information necessary for providing the first platform service.

  The storage 43 further stores migration data 43a related to the migration processing of game data from another platform to the platform 1B. An example of the migration data 43a is shown in FIG. As shown in the figure, the migration data 43a includes account information on the platform 1B of the user A who migrates the game data, determination information for determining whether a link notification described later is valid, and game data to the platform 1B. Migration status information indicating whether or not the migration has been completed, and other information can be included. As described above, the storage 43 can store the determination information, the transfer status information, and other information in association with the account information of the user who requests the transfer of the game data. The account information is, for example, user identification information (second user ID) of the user in the platform 1B. The determination information is, for example, a nonce for preventing a replay attack. The migration status information is, for example, binary flag information. This flag information indicates, for example, that the game data transfer process has been completed when the value is “1”, and indicates that the game data transfer process has not been completed when the value is “0”.

  The storage 53 may store programs for executing game logic, asset data, and various data necessary for providing other games. The storage 63 may store programs for executing game logic, asset data, and various data necessary for providing other games.

  The storage 100 stores game data 101 used in a game provided by the game server device 50 of the platform 1A, game data 102 used in a game provided by the game server device 60 of the platform 1B, and link data 103. The

  An example of the game data 101 is shown in FIG. As illustrated, the game data 101 of the user A is stored in the storage 100 in association with the account information of the user A (for example, the first user ID of the user A) in the platform 1A. The game data 101 may be written and read by the game server device 50.

  An example of the game data 102 is shown in FIG. As illustrated, the game data 102 of the user A is stored in the storage 100 in association with the account information of the user A (for example, the second user ID of the user A) in the platform 1B. The game data 102 may be written and read by the game server device 60.

  The game data 101 includes data indicating game items acquired by the user A in the game provided by the game server device 50, data indicating points and virtual currency acquired by the user A in the game, and quests cleared in the game And various data used for managing the progress of the game other than these. Similarly, the game data 102 includes data indicating game items acquired by the user A in the game provided by the game server device 60, data indicating points and virtual currency acquired by the user in the game, and cleared in the game. Various data used for managing the progress of the game other than the data indicating the quest of the game can be included. The game data stored in the storage 100 is accessible from a game server device that provides a game in which the game data is used, but may be inaccessible from other devices. For example, the game data 101 may be accessible from the game server device 50, but may not be accessible from other devices. The game data 102 can be accessed from the game server device 60, but may be inaccessible from other devices.

  At least a part of the game data 101 stored in the storage 100 may be stored in the storage 53 of the game server device 50. Similarly, at least a part of the game data 102 stored in the storage 100 may be stored in the storage 63 of the game server device 60.

  An example of the link data 103 is shown in FIG. As shown in the figure, the link data 103 includes migration source account information in the migration source platform and migration destination account information in the migration destination platform. In the link data 103, the transfer source account information is associated with the transfer destination account information. FIG. 5 shows an example of the link data 103 in the embodiment for transferring the game data from the platform 1A to the platform 1B. The migration source account information in FIG. 5 is the user identification information (first user ID) of the user A in the migration source platform 1A, and the migration destination account information is the user identification information (the first user ID of the user A in the migration destination platform 1B). 2 user ID).

  Subsequently, functions of the respective devices constituting the game processing system 1 will be described. First, functions of the platform server device 30 and the platform server device 40 will be described. The processor 31 of the platform server device 30 is configured to execute various functions (settlement function and the like) related to the first platform service by executing computer-readable instructions. Similarly, the processor 41 of the platform server device 40 is configured to execute various functions (settlement function and the like) related to the second platform service by executing computer-readable instructions.

  The processor 41 of the platform server device 40 is configured to further function as a code generation unit 41a and a determination unit 41b by executing computer-readable instructions.

  In one embodiment, the code generation unit 41 a generates an identification code based on a request (identification code request) from the client device 20, and transmits the generated identification code to the client device 20. This identification code is generated by encoding the identification data by a predetermined encoding method. This identification data includes user identification information (second user ID) in the platform 1B of the user A who uses the client device 20 that has transmitted the identification code request. The identification code may be an optically readable code, for example. The identification code may be a QR code (registered trademark). As is well known, the QR code is a matrix type two-dimensional code. In this specification, an embodiment in which a QR code is used as an identification code will be mainly described. However, the QR code is an example of an identification code, and various optically readable codes other than the QR code and other codes can be used as the identification code of the present invention.

  In the identification data encoded by the code generation unit 41a, in addition to the user identification information (second user ID) in the platform 1B of the user A who has requested the issuance of the identification code, the issuer name of the identification code (for example, the platform The name of the server device 40), the expiration date of the identification code, the replay attack countermeasure parameter (for example, nonce), and at least one of other information may be included.

  In one embodiment, the code generation unit 41a generates a token with an electronic signature by signing identification data with a secret key, and encodes the generated token to generate a QR code. This token may be, for example, a JWT (JSON Web Token) format token.

  The determination unit 41b determines whether or not the link process for transferring the game data to the platform 1B is completed based on a link notification described later. If the determination unit 41b determines that the migration process has been completed, it updates the migration status information of the migration data 43a. When the transfer status information is binary flag information, this flag information is set to “1” indicating that the game data transfer process is completed in response to the completion of the transfer process.

  Next, functions of the client device 10 and the client device 20 will be described. In the illustrated embodiment, the processor 11 of the client device 10 functions as a game progress unit 11a, a code reading unit 11b, and a takeover request unit 11c by executing computer-readable instructions. The processor 21 of the client device 20 functions as a game progress unit 21a and a code output unit 21b by executing computer-readable instructions.

  The game progression unit 11a advances the game in response to an operation input from the user via an input mechanism (for example, a touch panel) of the client device 10. Similarly to the game progression unit 11a, the game progression unit 21a advances the game in response to an operation input from the user. The operation input from the user is an input for designating the action of the player character, for example.

  The code output unit 21 b of the client device 20 displays the QR code received from the platform server device 40 on the display 23.

  The code reading unit 11 b of the client device 10 reads the QR code displayed on the display 23 of the client device 20. The code reading unit 11 b reads the QR code displayed on the display 23 of the client device 20 via the camera provided in the client device 10. The code reading unit 11b decodes the read QR code to obtain identification data.

  The takeover request unit 11 c transmits a takeover request for linking game data between platforms to the game server device 50. This takeover request is transmitted to the game server device 50 together with the identification data obtained by the code reading unit 11b. This takeover request may be transmitted to the game server device 50 together with user identification information (first user ID) in the platform 1A of the user of the client device 10.

  Next, functions of the game server device 50 and the game server device 60 will be described. The processor 51 of the game server device 50 functions as a game management unit 51a, a verification unit 51b, and a link unit 51c by executing computer-readable instructions. The processor 61 of the game server device 60 functions as a game management unit 61a by executing computer-readable instructions.

  The game management unit 51a and the game management unit 61a perform various processes for progressing the game. For example, the game management unit 51a processes a game message from the client device 10 based on predetermined game logic, and provides the game device 10 with various game data for executing a battle game. Can be controlled. For example, when receiving an item use message instructing the use of an item from the client device 10, the game management unit 51a performs a process for using the instructed item. The game management unit 61a may perform the same processing as the game management unit 51a.

  The verification unit 51b verifies the identification data received from the client device 10 according to a predetermined verification algorithm. For example, when the identification data is signed with a secret key, the validity of the identification data is verified according to a predetermined verification algorithm using a public key corresponding to the secret key. Accordingly, the verification unit 51b can determine whether or not the identification data received from the client device 10 is properly signed by the platform server device 40. When the issuer name of the identification code is included in the identification data, the verification unit 51b may determine whether or not the issuer name is a valid issuer.

  In one embodiment, the link unit 51c is a game provided on the platform 1A (that is, a game provided by the game server device 50) when it is determined that the identification data is legitimately signed by the platform server device 40. A link process for transferring the accumulated game data of the user A to the platform 1B is performed. This link processing is performed by generating link data 103 and storing the generated link data 103 in the storage 100. That is, the link unit 51c includes the user identification information (second user ID) in the platform 1B of the user A included in the identification data received from the client device 10, and the user identification information (first information in the platform 1A of the user A). And the user ID) are stored in the storage 100 as link data 103. The link data 103 may be stored in a storage other than the storage 100. For example, the link data 103 may be stored in any one of the storage 43, the storage 53, the storage 63, and any other storage, or may be distributed and stored in these storages.

  The verification unit 51b is configured to perform the link process when it is determined that the issuer name is a valid issuer when the identification data includes the issuer name of the identification code. May be. When the identification data includes the expiration date of the identification code, the verification unit 51b may be configured to perform the link process when it is determined that the identification code is within the expiration date.

  Next, a takeover process for taking over game data from the platform 1A to the platform 1B will be described with reference to FIGS. FIG. 6 is a sequence diagram for explaining processing in the game processing system according to the embodiment. FIG. 7 is a schematic diagram illustrating an example of a display image displayed on the client device 20. FIG. 4 is a schematic diagram illustrating an example of an identification code displayed on a client device 20. FIG.

  At the start of the takeover process shown in FIG. 6, the user A logs in to the platform 1 </ b> A and accesses the game server device 50 through the client device 10 to play the game on the platform 1 </ b> A. As a result, it is assumed that the game data 101 of the user A is stored in the storage 100 in association with the first user ID of the user A. And it is assumed that the user A is going to hand over the game data accumulated in this platform 1A to the platform 1B. In the example shown in FIG. 6, the platform 1A is the migration source platform, and the platform 1B is the migration destination platform.

  In the game data transfer process, first, an initial game screen is displayed on the display 23 of the client device 20 in step ST1. FIG. 7 schematically shows an example of an initial screen displayed on the client device 20. As shown in the drawing, an initial screen displayed on the client device 20 includes a game start button 71 for starting a game without performing a data transfer process, and a data transfer button 72 for starting a game data transfer process. And including. When the game start button 71 is selected by the user A, processing for advancing the game is executed according to the game program and the user's operation input. When proceeding with the game, the client device 20 accesses the game server device 60 as needed. For example, the game progressing part 21a and the game management part 61a execute the game progressing process in the client device 20.

  On the other hand, when the data takeover button 72 is selected by the user A, the takeover process proceeds to step ST2. In step ST2, an identification code request is transmitted from the client apparatus 20 to the platform server apparatus 40.

  The identification code request transmitted from the client device 20 is received by the platform server device 40 in step ST3. Next, in step ST4, based on the received identification code request, the platform server device 40 generates identification code by encoding identification data including the second user ID, which is user identification information on the platform 1B of the user A. . The identification data may include a nonce in addition to the second user ID of the user A. This identification data may be signed with a secret key. The generation of the identification code is performed by, for example, the code generation unit 41a.

  In parallel with the generation of the identification code, or before or after the generation of the identification code, part or all of the identification data is stored in the storage 43 in the form of migration data 43a. Since the game data transfer process has not been completed at the time of processing in step ST4, the value of the transfer status information in the transfer data 43a is set to “0”.

  Next, in step ST5, the generated identification code is transmitted to the client apparatus 20. Subsequently, in step ST6, the identification code is received by the client apparatus 20. The received identification code is displayed on the display 23 of the client device 20 in step ST7. In step ST7, a QR code image 81 is displayed in a predetermined area of the display 23 as shown in FIG.

  Next, in the client device 20, a transition status confirmation request is periodically transmitted to the platform server device 40 in step ST <b> 8 a. In response to this, in step ST8b, the migration data 43a is checked. If the value of the migration status information associated with the second user ID of the user A is “0”, the migration of the game data is not completed. And a notification indicating that is returned to the client device 20. The migration status confirmation request may be periodically transmitted from the client device 20 until the value of the migration status information is rewritten to “1”.

  In the client device 10, the QR code displayed on the client device 20 is read in step ST9. The read QR code is decoded to obtain identification data. The QR code is read and decoded by, for example, the code reading unit 11b.

  The identification data obtained by decoding the QR code is transmitted to the game server device 50 in step ST10. This identification data is received by the game server device 50 in step ST11.

  The received identification data is verified in step ST12. For example, when an electronic signature is given to the identification data, it is verified whether the signature is signed by a legitimate signer by using a public key corresponding to the secret key. For example, the verification of the identification data is performed by the verification unit 51b.

  If it is determined in step ST12 that the identification data is invalid, the game data transfer process is terminated without proceeding to the next step. In this case, the transfer process ends without transferring the game data from the platform 1A to the platform 1B.

  On the other hand, when it is determined that the identification data is valid, the handover process proceeds to step ST13, and a link process for transferring the game data of the user A to the platform 1B is performed. Specifically, the user identification information (first user ID) on the platform 1A of the user A and the user identification information (second user ID) on the platform 1B of the user A included in the identification data whose validity has been confirmed. And are stored in the storage 100 as link data 103. This link processing is performed, for example, by the link unit 51c.

  When the link process in step ST13 is completed, the process proceeds to step ST14, and a link notification indicating that the link process is completed is transmitted from the game server device 50 to the platform server device 40. This link notification may include the nonce included in the identification data used to generate the link data 103.

  The processing of step ST9 and step ST10 in the client device 10 and the processing of step ST11 to step ST14 in the game server device 50 are performed in parallel with the processing in step ST8a in the client device 20 and the processing in step ST8b in the platform server device 40. May be executed.

  The link notification transmitted from the game server device 50 is received by the platform server device 40 in step ST15. Next, in step ST16, it is determined whether the link notification is valid using the nonce included in the link notification received in step ST15. Specifically, if the transition status information corresponding to the nonce included in the link notification is set to “0” indicating that the game data transition processing has been completed in the transition data 43a, the use of the nonce is performed. Since this is the first time, the link notification is determined to be valid. On the other hand, if the transition status information corresponding to the nonce included in the link notification is set to “1” indicating that the game data transition processing has been completed in the transition data 43a, the nonce is used for the first time. Therefore, the link notification is determined to be invalid. The determination process in step ST16 is performed by, for example, the determination unit 41b.

  If it is determined in step ST16 that the link notification is valid, in step ST17, the transition status information corresponding to the nonce is updated to “1” indicating that the game data transition processing has been completed in the transition data 43a. The In step ST18, a transfer completion notification indicating that the game data transfer processing has been completed is transmitted to the client device 20.

  Next, in step ST19, the client device 20 receives the migration completion notification.

  Next, in step ST <b> 20, the game is started on the client device 20, and the game is advanced according to the user A operation. Since the client device 20 advances the game in cooperation with the game server device 60, the game is provided on the platform 1B. In addition, this game can use the game data 101 stored on the platform 1A by referring to the link data 103. Specifically, the client device 20 can use the game data 101 accumulated on the platform 1A while executing the game on the platform 1B in the following procedure. First, the client device 20 or the game server device 60 transmits a game data acquisition request to the storage 100 during execution of the game on the platform 1B. This acquisition request is transmitted to the storage 100 together with the user identification information (second user ID) of the user A in the platform 1B of the user A. The storage 100 refers to the link data 103 and identifies the first user ID associated with the received second user ID. Next, data corresponding to the first user ID or a part thereof is extracted from the game data 101 of the platform 1A, and the extracted data is returned to the client device 20 or the game server device 60. That is, the game data 101 of the user A in the platform 1A is specified based on the second user ID of the user A and the link data 103, and the platform 1B is used using the data extracted from the game data 101 thus specified. The game proceeds. In this way, the client device 20 and the game server device 60 can use the game data 101 stored on the platform 1A during the execution of the game on the platform 1B. That is, the game data accumulated on the platform 1A is transferred to the platform 1B.

  According to the above embodiment, different user identification information is used in the platform 1A and the platform 1B, but the first user ID used in the platform 1A corresponds to the second user ID used in the platform 1B. By referring to the attached link data 103, game data can be transferred between platforms using different user identification information.

  According to the above embodiment, the identification code used for taking over the game data is generated in the migration destination platform (platform 1B). As a result, even if a transfer code cannot be generated on the transfer source platform (platform 1A), the game data can be transferred using the identification code generated on the transfer destination platform.

  According to the above embodiment, since the identification code used for the transfer of the game data is generated in the migration destination platform (platform 1B), the operator of the platform 1B uses the identification code to migrate to the platform 1B. Can be promoted. For example, when the operation of the platform 1A is to be stopped, the existing user of the platform 1A can be promoted to move to the platform 1B.

  According to the above embodiment, the identification code can be an optically readable code. If the identification code is an optically readable code, the identification code can be easily exchanged between client devices used on different platforms.

  According to the embodiment, the completion notification (link notification) indicating that the identification code includes a nonce and the link process is completed is generated so as to include the nonce included in the received identification code. This nonce allows the identification code to be used only once. Therefore, it is possible to prevent game data from being taken over by an unauthorized client due to a replay attack.

  According to the embodiment, the identification data is given an electronic signature, and the link data 103 is created when it is determined that the identification data is valid using a public key. As a result, it is possible to prevent illegal transfer of game data due to the altered identification code.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, some or all of the functions executed by the processors 11, 21, 31, 41, 51, 61 may be realized by a processor that is not shown in the above embodiment unless departing from the spirit of the invention. . In FIG. 1, the processors 11, 21, 31, 41, 51, 61 are illustrated as a single component, but the processors 11, 21, 31, 41, 51, 61 are physically separated. It may be a set of computer processors. In this specification, a program described as being executed by the processors 11, 21, 31, 41, 51, 61 or an instruction included in the program may be executed by a single processor or a plurality of processors May be executed in a distributed manner. Further, a program executed by the processors 11, 21, 31, 41, 51, 61 or an instruction included in the program may be executed by a plurality of virtual computer processors.

  Even though the processes and procedures described herein are described as being performed by a single device, software, component, or module, such processes or procedures may be performed by multiple devices, multiple software, multiple Component and / or multiple modules. In addition, even though the data, tables, or databases described herein are described as being stored in a single memory, such data, tables, or databases are provided on a single device. Alternatively, the data can be distributed and stored in a plurality of memories or a plurality of memories arranged in a plurality of devices. Further, the software and hardware elements described herein may be implemented by integrating them into fewer components or by disassembling them into more components.

  In the processing procedure described in this specification, particularly in the processing procedure described using a flow diagram or sequence diagram, a part of the steps (steps) constituting the processing procedure is omitted, and the processing procedure is configured. It is possible to add a process that is not explicitly specified as a process to be performed and / or to change the order of the process, and the processing procedure in which such omission, addition, or change of the order is also deviated from the gist of the present invention. Unless otherwise specified, it is included in the scope of the present invention.

  1 Game processing system

Claims (11)

The second user identification information is used to identify the user from the first platform where the first user identification information is used to identify the user by one or more computer processors executing computer readable instructions. A method of handing over game data in the first platform of the user stored in association with the first user identification information to a second platform to be used,
Encoding identification data including the second user identification information to generate an identification code;
An output step of outputting the identification code in a second client device using the second platform;
A reading step of reading the identification code in a first client device using the first platform;
Generating link data associating the second user identification information and the first user identification information included in the identification code read by the first client device;
Identifying the game data based on the second user identification information and the link data, and providing a game using the game data to the second client device;
A method comprising: The identification code is an optically readable code.
The method of claim 1. In the output step, the identification code is displayed on a display of the second client device.
The method of claim 2. And a transmission step of transmitting a completion notification to the second platform in response to the second user identification information and the first user identification information included in the identification code being associated with each other.
The method according to any one of claims 1 to 3. Further comprising the step of starting the game on the second client device in response to the completion notification being received on the second platform.
The method according to any one of claims 1 to 4. The identification code further includes a nonce,
The completion notification is generated so as to include a nonce included in the identification code received from the first client device.
The method according to any one of claims 1 to 5. An electronic signature is given to the identification data,
In the association step, when it is determined that the identification data is valid using a public key, the second user identification information and the first user identification information included in the identification code are associated with each other. ,
The method according to any one of claims 1 to 6. The identification code further includes time limit information indicating an expiration date,
In the association step, the second user identification information and the first user identification information included in the identification code are associated when the expiration date included in the identification code has not elapsed. ,
The method according to any one of claims 1 to 7. The identification code further includes an issuer name indicating the issuer,
In the association step, when the issuer name included in the identification code is valid, the second user identification information and the first user identification information included in the identification code are associated with each other. ,
9. A method according to any one of claims 1 to 8. A second user identification information is used to identify the user from a first platform, wherein the second user identification information is used to identify the user by being executed on one or more computer processors. A program for taking over game data in the first platform of the user stored in association with the first user identification information to a platform,
The one or more computer processors;
Encoding identification data including the second user identification information to generate an identification code;
An output step of outputting the identification code in a second client device using the second platform;
A reading step of reading the identification code in a first client device using the first platform;
Generating link data associating the second user identification information and the first user identification information included in the identification code read by the first client device;
Identifying the game data based on the second user identification information and the link data, and providing a game using the game data to the second client device;
A program that executes Game data on the first platform of the user from a first platform on which the first user identification information is used to identify the user to a second platform on which the second user identification information is used to identify the user A system for taking over
One or more processors;
A storage for storing game data in the first platform of the user in association with the first user identification information;
With
The one or more computer processors execute computer-readable instructions,
Encoding identification data including the second user identification information to generate an identification code;
In the second client device using the second platform, the identification code is output,
In the first client device using the first platform, reading the identification code;
Generating link data associating the second user identification information and the first user identification information included in the identification code read by the first client device;
Specifying the game data based on the second user identification information and the link data, and providing the game to the second client device using the game data;
system.

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