8results about How to "Avoid single point of failure problems" patented technology

The invention relates to a method for realizing cross-network series connection between a client and a server of a P2P system through a springboard, which is suitable for the conditions that the client and the server of the P2P system are positioned in two network environments, the networks are independent, the routing rule is complicated and the security requirement is strict, and can realize cross-network series connection transmission of data streams between the P2P server and the client by means of the springboard. A client side internal network does not need to be adjusted, a P2P service side network does not need to be adjusted, and server software does not need to be modified or newly deployed. The method is characterized in that service data are not coupled, two networks are connected in series for data transmission by modifying address data of an underlying transmission protocol and maintaining an address mapping relation table of transmission data, and the whole process is similar to the operations of receiving and transmitting data by a router, modifying network address information and maintaining an NAT port table.

This invention discloses a blockchain-based hierarchical sharing method for medical data. This method encrypts files with monotonic access structures according to different levels of sensitivity. The secret value is passed upwards through a secret value sharing mechanism, transferring the secret value of the low-sensitivity ciphertext to the high-sensitivity ciphertext. During the data decryption stage, a rapid comparison is performed to find the file with the highest sensitivity that the user can satisfy, and a pre-decryption is performed. This makes it easier to decrypt sensitive files in the file set, improving access control and effectively reducing the number of decryption steps in the medical data sharing process. This truly achieves multi-level attribute data sharing while ensuring privacy and security.

The embodiment of the utility model provides a power supply circuit of an automobile electronic device, and the circuit comprises a standby power interface which is electrically connected with a standby power supply; the main power interface is electrically connected with a main power supply; the power utilization end interface is electrically connected with a power utilization end; the charging circuit is electrically connected between the main power supply interface and the standby power supply interface; the output switching circuit is electrically connected with the main power supply interface, the standby power supply interface and the power utilization end interface; when the output switching circuit detects that the main power supply interface is connected with the main power supply, the output switching circuit supplies power to the power utilization end through the main power supply. When it is not detected that the main power supply interface is connected with the main power supply, the standby power supply supplies power to the power utilization end; and the charging circuit is used for charging the standby power supply through the main power supply. According to the technical scheme of the embodiment of the invention, seamless switching can be realized, the equipment reliability is improved, the user perception is reduced, the standby power supply is automatically charged, and the manpower and time cost is reduced.

The embodiment of the invention provides a data conjoint analysis method, a data conjoint analysis device, computer equipment and a computer storage medium, and relates to the technical field of data processing. The method comprises the following steps: in response to receiving a conjoint analysis task sent by a data analysis terminal, obtaining shared data which is released by each task participation terminal and contains a shared user entity from a joint block chain jointly constructed by each task participation terminal, the conjoint analysis task at least containing an initial conjoint analysis model; target gradient information is determined according to the shared data corresponding to the shared user entity, and the target gradient information is stored to the joint block chain, so that each task participation terminal updates the model parameters of the corresponding initial joint analysis model according to the target gradient information, and obtaining a conjoint analysis result based on the updated target conjoint analysis model. According to the method, the single-point fault problem can be solved, and the safety and privacy of model parameters in the model training process of federated learning can be improved.

The invention relates to the technical field of remote disaster recovery transmission, and discloses a remote disaster recovery transmission method, device and equipment for IPTV multicast service. The method comprises: respectively using a multicast convergence point and a multicast transcoding server to build a networking architecture for a first area and a second area to obtain an initial dual-node multicast network; dynamically detecting the multicast transcoding server to obtain a multicast service routing mechanism; creating a VPN instance to obtain a service isolation environment; transcoding the multicast stream received in the first area and synchronizing it to the second area to obtain multicast service data; inputting the multicast service data into a double-layer proxy model, performing deep reinforcement learning on service scheduling, and obtaining an intelligent scheduling strategy; performing load sharing calculation and establishing a dual-active backup mechanism for the first area and the second area to generate a remote disaster recovery transmission scheme. The invention realizes dual-active deployment and dynamic load sharing of the service, and significantly improves the overall service quality of the IPTV live broadcast service.

According to the cluster patrol flight fire extinguishing unmanned aerial vehicle cooperative control method based on arrival time consistency, a self-adaptive adjustment mechanism and a time compensation strategy are introduced in the cooperative process, the flight path is corrected in real time through node coordination, and it is ensured that when the state of an ignition point or environment information changes, the unmanned aerial vehicle can be controlled in real time. And rapid convergence at the same disposal moment can be realized, and the synchronous disposal precision and the overall cooperative efficiency of the system in a complex fire extinguishing task environment are improved. According to the method, a novel control strategy is provided for the patrol flight fire extinguishing unmanned aerial vehicle cluster, so that the patrol flight fire extinguishing unmanned aerial vehicle cluster can form and keep stable formation flight, and synchronous disposal of multiple patrol flight fire extinguishing unmanned aerial vehicles for the same ignition point is realized.

The invention provides a data sharing method, device and equipment. The method comprises the steps that a block chain node receives a data query request sent by first equipment, wherein the data query request comprises attribute information of the first equipment; the block chain node executes a first operation, wherein the first operation comprises at least one of the following items: determining a ciphertext corresponding to the data query request; the ciphertext is sent to the first device; and sending the data query request to a second device. In the application, due to the distributed characteristics and non-tampering characteristics of the block chain, the block chain node is taken as a trusted authorization center, so that the single-point fault problem caused by a third-party server can be avoided, and the security, authenticity, transparency and fairness of transaction information between devices can be ensured.

The present invention discloses a cross-chain gateway redundant switching method and system based on relay chain, which belongs to the field of cross-chain gateway technology, including: the relay chain is connected to the application chain through a plurality of cross-chain gateways; a plurality of cross-chain gateways send a master gateway election request to the relay chain node directly connected to themselves, and determine the master gateway and the slave gateway based on the master gateway election reply of the relay chain node; the master gateway and the slave gateway send heartbeat information to the relay chain node directly connected to themselves, and the relay chain node replies to the heartbeat information based on the reply information of the consensus node; the master gateway maintains the master gateway mode or enters the slave gateway mode based on the heartbeat information reply; the slave gateway maintains the slave gateway mode or conducts the master gateway election based on the heartbeat information reply. The present invention avoids the single point failure problem of the cross-chain gateway, ensures that the blockchain system of the medical institution can be continuously and stably connected to the relay cross-chain system, ensures the effective intercommunication of medical resource data and the continuity of business collaboration, and meets the reliability requirements.