Abstract: This invention involves a multi-energy distributed transaction and smart contract design method based on the Ethereum private chain. This method includes the following steps: 1) Setting the genesis node of the smart contract as an administrator node, while other nodes as user nodes; 2) Distinguishing system functions and account permissions between administrator nodes and user nodes. Only administrator nodes can add or delete the types of tradable energy in the blockchain through the energy switch function; 3) The user realizes multiple energy transactions at the same time, and the smart contract matches the information released by users based on the market supply and demand situation. This invention can effectively solve the problems of the centralization of the current energy trading system and insufficient security protection. At the same time, it provides an effective solution to the current limited development of blockchain technology in the field of multi-energy trading.

Abstract: A client device obtains and records inbound station information. The client device sends first electronic credential information to an inbound charging apparatus, where the first electronic credential information comprises authentication information generated by a payment system based on a user identity in the client device. The client device sends second electronic credential information and the inbound station information to an outbound charging apparatus, where the second electronic credential information comprises authentication information generated by the payment system based on the user identity in the client device.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A client device obtains and records inbound station information. The client device sends first electronic credential information to an inbound charging apparatus, where the first electronic credential information comprises authentication information generated by a payment system based on a user identity in the client device. The client device sends second electronic credential information and the inbound station information to an outbound charging apparatus, where the second electronic credential information comprises authentication information generated by the payment system based on the user identity in the client device.

Abstract: The specification discloses a dynamic graphic code implementation method and apparatus. The method includes: invoking a distance sensor to detect a distance between a device and a blocking object when displaying a graphic code; and if the distance is within a preset distance range, stopping refreshing the graphic code.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for data synchronization. One of the methods includes that a first terminal device establishes a data channel to a specified carrier through near field communication. The first terminal device obtains an account identifier of a first account and first streaming data corresponding to the first account through the data channel, where the account identifier of the first account and the first streaming data are stored in the specified carrier. The first terminal device determines second streaming data corresponding to a second account associated with the first account, and performs data synchronization between the first account and the second account based on the first streaming data and the second streaming data.

Abstract: A virtual card opening method and system, a payment system, and a card issuing system are disclosed. The method comprises: receiving, through an online traffic entrance associated with a payment system, a virtual card opening request from a user, the virtual card opening request comprising user information and type identifier information of a virtual card; searching, by the payment system, for a rule for acting as an agent to open a card and a card opening condition corresponding to the type identifier information from the payment system, the rule for acting as an agent to open a card and the card opening condition being obtained in advance by the payment system from a card issuing system; and generating, by the payment system, a target virtual card according to the user information and the rule for acting as an agent.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: In order for a terminal to play a video, a first video file is obtained. The first video file is sliced to generate a plurality of first slice files. A play index is generated to include entries respectively corresponding to the first slice files. An entry corresponding to a second video file is inserted into the index between an entry corresponding to one first slice file and an entry corresponding to another first slice file in the play index. The first slice files are played in sequence according to the play index, and the second vide file is played after the one of the first slice files and before the other of the first slice files according to the play index.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A virtual card opening method and system, a payment system, and a card issuing system are disclosed. The method comprises: receiving, through an online traffic entrance associated with a payment system, a virtual card opening request from a user, the virtual card opening request comprising user information and type identifier information of a virtual card; searching, by the payment system, for a rule for acting as an agent to open a card and a card opening condition corresponding to the type identifier information from the payment system, the rule for acting as an agent to open a card and the card opening condition being obtained in advance by the payment system from a card issuing system; and generating, by the payment system, a target virtual card according to the user information and the rule for acting as an agent.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for data synchronization. One of the methods includes that a first terminal device establishes a data channel to a specified carrier through near field communication. The first terminal device obtains an account identifier of a first account and first streaming data corresponding to the first account through the data channel, where the account identifier of the first account and the first streaming data are stored in the specified carrier. The first terminal device determines second streaming data corresponding to a second account associated with the first account, and performs data synchronization between the first account and the second account based on the first streaming data and the second streaming data.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.