76results about How to "No additional overhead" patented technology

Digital content from a source (e.g., a file or a stream), is striped and encoded in parallel over a cluster of Storage Systems. The encoding ensures that subsequent retrieval of the data succeeds even when some members of the cluster of Storage Systems are lost or when errors in communication result in the loss of some IP packets. Host Map File (HMF) data is produced that describes fully how to retrieve the content, including the encoding parameters, the cluster of Storage Systems and the striping of the encoded data. This HMF data is then inserted as the header of every encoded file on the cluster of Storage Systems. The HMF data is the only way the encoded files can be reassembled into a meaningful whole. The original content is retrieved by requesting its data from the cluster of Storage Systems. In each Storage System, a decoder parses the HMF data and transmits the striped data to the requestor. The decoders cooperate to dynamically detect erasures and to reconstruct the missing data. The system is self-healing as new Storage Systems are able to reconstruct data missing due to the loss of any Storage Systems from the cluster without impeding concurrent encode and decode transactions.

The invention provides a time advance compensation satellite mobile communication random access method and system and a medium, and the method comprises the steps: a downlink broadcast sending step: obtaining a cell formed by a wave beam of a satellite on the ground, obtaining the minimum TA in the cell, recording the minimum TA as TAmin, and enabling the satellite to send satellite position information and TAmin in the downlink broadcast; And a transmission delay calculation step: enabling the UE to receive the downlink broadcast, obtaining the satellite position information and the TAmin according to the received downlink broadcast, and calculating the difference value TAdiff of the TA estimated by the UE per se relative to the TAmin. In the random access process of the satellite, the transmission time delay is estimated in advance at the UE side and compensation is performed when the PRACH is sent, so that the problem of high time cost caused by long time delay in the random accessof the satellite is solved, and the consumption of uplink resources by the PRACH is greatly reduced.

This invention relates to a method and a device for accessing database, in which, said method includes: A, verifying the validity of a request for accessing the database by a received customer end and sending the legal operation request to the database and records said operation request, B, the database operates the received operation request and feeds back the result to the customer end, said device includes: a database customer end inserts a data access agent as the tool for accessing the database and packages the operation request to it, a unified certification and journal unit connected with the access agent of the customer end of the database used in drafting a safety strategy, a journal strategy and /or alarm strategy and alarms when abnormal events happen, a database connected with the customer end for storing data of user relations.

The invention provides a cross-domain anonymous authentication method and system based on a blockchain. A trusted key generation center is set to issue a public and private key pair to a registrationcenter, and deploy key information of a blockchain smart contract management communication party; the registration center provides registration service for a common user, generates a signature to realize certificate authentication service, and stores communication party identification information and public key information related to a service system into the blockchain intelligent contract in a privacy protection mode; when two communication parties carry out mutual authentication, authentication information is sent in an anonymous mode, a blockchain intelligent contract query interface is called to check identification information of a user, and whether a public key of the user is registered or not is checked and authenticated; the smart contract manages the identification information and the key information, provides real-time update of the user identification information and the key information, so that the method avoids the problems of introduction of single-point fault attacks, asynchronous update, high communication overhead and the like, and supports user cross-domain authentication service. The anonymous authentication technical scheme has good security, stability and reliability.

The invention provides a network access method and system. The method comprises the following steps: accessing internet cards of a plurality of service providers so as to simultaneously access a plurality of service provider networks, and obtaining distributed bandwidths, signal intensities and/or network delays of target hosts of the service provider networks when a network connection request from a terminal is received; sorting the service provider networks according to the distributed bandwidths, signal intensities and/or network delays of target hosts of the service provider networks, and selecting one optimal service provider network; storing the next hop IP addresses of the service provider networks in a connection table, and enabling the terminal to access the selected optimal service provider network according to the IP address so as to connect with the target host. The wireless network accesses of the plurality of service providers can be simultaneously supported so that each network connection can get the optimal access form. The speed of users accessing the network can be accelerated without increases in expenditure.

An alternative signaling transmission method includes such steps as determining the least scheduling interval, allocating up and down control channels, dividing up (or down) signaling into several parts, alternatively transmitting them in different time slots, and distinguishing the contents of up (or down) signaling by using a parameter relative to time.

The invention discloses a webpage information display method and device. The webpage information display method comprises the steps that main webpage documents from a server are obtained; a first-screen document in the main webpage documents is determined according to a first-screen mark in the main webpage documents; the first-screen document is parsed, and a first-screen page is drawn accordingto a parsing result. The first-screen page can be quickly drawn according to the first-screen mark in the main webpage documents, a page display effect and display speed are improved, and increased ofthe expenditure for server and bandwidth resource is not needed.

The invention relates to a crystal oscillator oscillation frequency correction method and a crystal oscillator oscillation frequency correction device. The method comprises the steps of receiving a first communication frame from sending equipment, and recording a moment T2 for receiving the first communication frame; sending a first reply frame to the sending equipment according to the first communication frame, and recording a moment T3 for sending the first reply frame; receiving a second communication frame sent by the sending equipment in response to the first reply frame, and recording a moment T6 for receiving the second communication frame; acquiring a moment T1 for sending the first communication frame, a moment T4 for receiving the first reply frame, and a moment T5 for sending the second communication frame sent by the sending equipment via the second communication frame; determining a frequency difference between the receiving equipment and the sending equipment according to the moment T1, the moment T2, the moment T3, the moment T4, the moment T5 and the moment T6; and adjusting oscillation frequency of a crystal oscillator according to the frequency difference. According to the crystal oscillator oscillation frequency correction method provided by the embodiment of the invention, real-time correction on oscillation frequency of the crystal oscillator can be achieved, a correction algorithm can be simplified, and correction accuracy can be improved.

The invention discloses a self-calibration method achieved on the basis of spatial spectrum false peak elimination when cross coupling in ULA and UCA is unknown. The method comprises the steps that 1, a feature vector of a noise subspace is calculated according to an output signal of an array; 2, by means of an orthogonality relation between the noise subspace and a practical steering vector in the signal direction under the cross coupling influence, a spatial spectrum is constructed, false peaks in the spatial spectrum are eliminated, and DOA is estimated through an iteration method according to positions of peak values in the special spectrum, wherein the false peaks are eliminated through two methods that the false peaks are eliminated by filtering zero points in the spacial spectrum and by normalizing the spatial spectrum; 3, the cross coupling coefficient is calculated according to an estimated value of the DOA, and the cross-coupling self-calibration method of the array is obtained. According to the self-calibration method achieved on the basis of spatial spectrum false peak elimination when cross coupling in the ULA and UCA is unknown, by means of the characteristics of the cross-coupling array in the ULA and UCA, the problem that a large number of false peaks exist in a MUSIC spacial spectrum when cross coupling is high is effectively solved, the computation cost is almost not increased, the success rate of DOA estimation is increased, and errors of DOA estimation are decreased, and self-calibration of the array is achieved when cross coupling is unknown.

The invention relates to the related technical field of set-top boxes, in particular to a method for ensuring the continuous playing of a program by the set-top box and the set-top box. The method comprises that: the set-top box stores the television program received from a program source into cache equipment, and then extracts the television program for play from the cache equipment; when receiving a program playing halting command, the set-top box stops extracting the television program from the cache equipment, and simultaneously stores the television program received from the program source into the cache equipment; and when receiving a program playing continuing command, the set-top box plays the television program according to a playing continuing strategy. By the method and the set-top box, a memory of the set-top box is fully utilized, and the additional overhead of a hard disk, a server or the like is not required to be increased; and simultaneously, the continuity of the program is ensured by adopting an accelerating playing method.

The invention discloses a message processing method and device, and belongs to the technical field of communication. The method includes the steps of obtaining a first message, wherein the first message includes first message content, a first source MAC address and a first target MAC address; generating a second message according to the first message, wherein the second message includes second message content, a second source MAC address and a second target MAC address, the second message content includes the first message content, and the second source MAC address includes tag information; sending the second message to a network device corresponding to the second target MAC address. The second message is sent to the network device corresponding to the second target MAC address, the second message includes the second message content, the second source MAC address and the second target MAC address, the second source MAC address includes the tag information, and an original unconcerned source MAC address is used for carrying the tag information, so that the utilization rate of message information is improved, and extra cost of a network is not caused.

A method for identifying data service type is provided, which is useful to regulate the power management module of electronic communication equipment. The method comprises using sampled data related to data service signal to calculate the related function (step 715), evaluating the result of related function and identifying the data service type (step 720), and regulating the power management module of electronic communication equipment based on the data service type (step 725).

The invention discloses an implementing method for Auto-DC automation integrated design. The Auto-DC automation method is mainly used for automation flow path development of the current logic synthesis design, only corresponding parameters needs to be configured, original manual, multi-step and staged operation is converted into good and fast one-off completion, high efficiency of circuit integrated design is achieved fundamentally, and therefore energy of a designer is concentrated into creative work drive by concepts. It is unnecessary to increase hardware expenditure for the design, cost is saved, and the implementing method for Auto-DC automation integrated design can be widely popularized. The implementing method conforms to development of current electronic design automation, and the logic synthesis technology is improved in automation, intellectualization and the like.

The invention provides a compression method and device of neural network data and a computer readable storage medium, and the method comprises the steps: receiving to-be-compressed data which is the activation output of any layer of a neural network model; determining a plurality of data blocks according to the to-be-compressed data and a preset data length; and performing compression operation onthe plurality of data blocks according to a bit plane compression algorithm. By utilizing the method, the to-be-compressed data is converted into the plurality of data blocks, and the data blocks arecompressed by adopting the bit plane compression algorithm, so that a relatively high compression rate can be realized, the storage space can be saved, and the memory access efficiency can be improved.

The invention discloses a large-batch decentralized distributed image classifier training method and system, and the method comprises the steps: enabling each working node to use a local image classifier parameter, calculating a random gradient according to a locally stored image sample, carrying out the normalization processing of the gradient, and updating the momentum and the local parameter through employing the normalized gradient. And each node communicates with the neighbor node to obtain the latest image classifier parameter, and the latest image classifier parameter and the local image classifier parameter of the node are subjected to weighted averaging to participate in the next round of updating as a new local parameter. And continuously repeating the training steps until a stop condition is reached, stopping each node, and taking a parameter average value on each node as a final output parameter. According to the method, a central node is cancelled, the problem of congestion at the central node is avoided, meanwhile, the method is suitable for large-batch image classifier training, and the number of parameter updating and communication times can be reduced through large-batch training, so that computing resources such as a GPU can be fully utilized, and the training efficiency is greatly improved.

The embodiment of the invention provides a method and device for controlling credible starting of a server. The method comprises the steps that if a BIOS integrity reference value of a target server exists in a BMC Flash of the target server, carrying out decryption operation on the reference value in the BMC Flash based on an SM4 symmetric cryptographic algorithm, and obtaining a decrypted reference value, Wherein the integrity reference value is obtained by measuring a complete code block of the BIOS in advance; Calculating a current execution code block of the BIOS in the target server based on an SM3 hash algorithm to obtain a metric value of the current execution code block; And if the metric value of the current execution code block is the same as the decrypted reference value, usingthe BMC in the target server to guide the BIOS to start. The method provided by the embodiment of the invention is simple, the credibility of the BIOS during starting can be effectively guaranteed, the original hardware structure of the BIOS can be kept unchanged without increasing any hardware cost, and the method has universal adaptability.

The present invention relates to a method for detecting a driving behavior causing excessive wear of a clutch of a vehicle. The method comprises the following steps: acquiring engine speed information, wheel speed information, and clutch pedal information; calculating an actual transmission ratio of a power system of the vehicle based on the engine rotating speed information and the wheel rotating speed information; calculating a reference transmission ratio based on the engine speed information and the clutch pedal information; and in the event that the actual gear ratio deviates from the reference gear ratio by more than a predetermined degree, concluding that there is a driving behaviour causing excessive wear of a clutch of the vehicle. The invention also relates to a device for detecting the driving behavior causing excessive wear of the clutch of the vehicle. The invention also relates to a method and a device for detecting the excessive wear state of the clutch of the vehicle. The invention also relates to the vehicle and a computer readable storage medium.

The invention discloses a dispatching station, which comprises a wireless network card and a wireless access module, wherein the wireless network card is used for providing sending and reception of a wireless signal for the wireless access module; the wireless access module is used for access and management of wireless users and wireless dispatching and comprises an access control child process unit and a wireless dispatching child process unit; the wireless dispatching child process unit is used for completing dispatching business request identification and mutual conversion processing between wireless and an SIP and between the wireless and a circuit and completing mutual recognition and distribution sharing of dispatching information; the access control child process unit is used for access and management of the wireless users; when the interaction between a wireless WIFI mode and the other mode is processed, the access control child process unit and the wireless dispatching child process unit need to complete interaction of control messages and mutual conversion of user media stream formats.

The invention discloses a wireless communication method, device and communication equipment. The method comprises the steps of: the communication equipment extracting a set part of information from information to be sent; encrypting other part of information in the information to be sent by taking the set part of information as an initial vector; generating new information to be sent by using the set part of information and the other part of encrypted information; and sending the new information to be sent. The wireless communication method, device and communication equipment can ensure the security of wireless communication.