209results about How to "Reduce computing requirements" patented technology

The present invention provides for a method of updating an internet search engine database with the results of a user's selection of specific web page listings from the general web page listing provided to the user as a result of his initial keyword search entry. By updating the database with the selections of many different users, the database can be updated to prioritize those web listings that have been selected the most with respect to a given keyword, and thereby presenting first the most popular web page listings in a subsequent search using the same keyword search entry.

The invention discloses a communication method of a novel network. The novel network is a network with a centralized control function and comprises a main control server and subordinate network equipment, and the subordinate network equipment comprises terminals. The method comprises the following steps that: the main control server configures downlink communication link for a current service; and the main control server sends the current service data packet sent by a source terminal to a target terminal according to the downlink communication link. Through the communication method and the communication system, the stability and smoothness of the transmission channel are ensured, the delay of multimedia services is prevented, the requirements for the state information security are met, the hardware resources are saved and the network transmission quality is guaranteed.

The invention provides a method for browsing web pages by a micro browser. When the method is in use, a server terminal receives the request information from a client terminal; the request information carries network information and device attribute parameters; the invention gets the page information from a network server according to the network information; the page information is analyzed to get the position information of each element in the page information and the page information and the position information are transmitted to a client terminal. The invention also provides a corresponding micro browser. As the invention divides the browser into the server and the client terminal and the calculation process is finished by the server during the page typesetting, the calculation requirement on the client terminal is reduced; simultaneously, as the server calculates the position information of each element according to initial page design pattern during the page typesetting, the original design pattern is ensured when the client terminal displays the page information, thus according with a user custom and improving the experience of the user.

The invention discloses a high voltage direct current power transmission line protection method based on a voltage and current mutation direction. The method comprises the following steps that when a fault exists in a line area, the directions of the voltage mutation quantity and the current mutation quantity at the protection measurement of a rectifying side are opposite, and the directions of the voltage mutation quantity and the current mutation quantity at an inverter side are the same; the feature is also applicable for anode lines and cathode lines; and faults at other areas do not satisfy the condition. Thus, the protection criterion of the high voltage direct current transmission line is structured and the protection method is disclosed. As the method provided by the invention is adopted in the protection of the direct current transmission line, actions can be performed fast and accurately when fault lightning, high impedance earthing faults and pole-pole faults exist in the line area; no error action is carried out under the situations of lightning disturbance, faults outside the line protection area and the like; the protection method is simple and clear; the requirement on communication channels is not high; the requirements on data calculating speed and sampling frequency are low; no synchronizing processing is required for sampled data; and various operation ways of a bipolar direct current power transmission system are applicable, and the practical value is high.

The invention discloses an attribute-based searchable encrypted electronic medical record system and an encryption method. The system comprises a key distribution center and a cloud storage center, wherein the key distribution center generates public parameters and a master key to initialize the system; the key distribution center generates and distributes keys containing user attributes to users;a data owner sets an access strategy before uploading medical record data, encrypts the data, and then uploads the data to the cloud storage center; a data visitor generates a trap door according tokeywords and the keys, and provides a query request to the cloud storage center; and after receiving the query request, the cloud storage center determines to return corresponding encrypted data to the data visitor according to the trap door and keyword ciphertexts. According to the scheme of the invention, the difficulty of key management in a multi-user environment can be reduced, data users canbe supported to accurately query the keywords of the ciphertexts, guessing attacks of the keywords can be resisted, and the leakage of privacy data can be effectively prevented.

The invention discloses a multi-target tracking method and a corresponding video analysis system for implementing the scheme. The method comprises the following steps: acquiring detection position information of a target; obtaining predicted position information of the target; matching the obtained prediction position information with the detection position information; updating the state information of the target based on the detection position of the target under the condition that the detection position information of the target is judged to be matched with the prediction position information of the target; under the condition that it is judged that the prediction position of a certain target has no detection position matched with the prediction position, judging that the target is an extinction target; and judging that the target is a new target or a reappeared target under the condition of judging that the detection position of a certain target is not matched with the detection position of the target. Therefore, through reasonable allocation of the functional modules, high tracking precision requirements can be met while low-computing-power high-speed tracking is realized.

The invention discloses a lightweight security authentication and key exchange method for narrow-band internet of things. The communication main body comprises a terminal and a server. Before the communication is established, the root key is shared between the terminal and the server, and the two-way authentication is realized by adopting a challenge-response interaction mechanism based on a symmetric cryptosystem. The present invention mainly solves the problem of the two-way identity authentication and key exchange between the terminal and server in the Internet of Things application systembased on NB-IoT and other narrow-band Internet of Things connection technologies, can realize lightweight security authentication algorithm, protocol and key agreement mechanism, and meet the design requirements of low power consumption, low bandwidth consumption, low interaction frequency and high security.

Methods, system apparatus and devices for classification and recognition that is based on principal component analysis and is implemented in the transform domain using the fast two-dimensional PCA to processes the signal in the transform domain. The signal is represented with a reduced number of coefficients, therefore reducing the storage requirements and computational complexity while yielding high recognition accuracy.

A dynamic password security login method is provided, which sets that a client and a server have weight synchronous models with the same parameters, and comprises the following steps: initiating a login request by the client, and sending a user name to the server, generating a random number by the server and returning to the client, obtaining that M=user 'Passwd' R, H=SHA1(M), F=LFSR (H) by respective calculations of the client and the server, obtaining the same weight WC=WS according to the mapping algorithm of a random number sequence F, leading the weight synchronous model to study P=%n order by the client according to the random number, wherein R is the random number, n is a preset value, sending the weight vector WC after updating P orders to the server after Hash algorithm SHA1(WC), and leading the weight synchronous model to study P orders by the server to obtain the weight vector WS after updating P orders, and calculating the Hash value SHA1 (WS) thereof, wherein the identification is success if the SHA1 (SC)=SHA1(WS), or is false. The dynamic password security login method has simple use, highly-effective security and low cost.

The invention discloses a service-oriented industrial production control and monitoring method and system. The system is mainly formed by intelligent devices, an intelligent device control and acquisition module, local control platform servers, local control platform clients, a cloud platform server, and a cloud platform client. Services provided by different production server providers are combined and planned by high-efficiency production process planning, local control platforms and a cloud platform perform graded monitoring and information sharing on the intelligent devices, each local control platform dynamically updates fault determination conditions to the cloud platform, the cloud platform performs synchronization with the local control platforms regularly, the learning ability and the online upgrading ability of the intelligent devices can be improved, the fault detection ability and the fault early warning ability of the intelligent devices are improved, the system represents combination of intelligent production, intelligent factories, and intelligent business, the production management is more efficient, and the system is an important composition of intelligent manufacture.

The invention relates to an implementation method and a system thereof for an intelligent browser of a mobile terminal. The method comprises the following steps that: step 1, the mobile terminal obtains an intelligent browser homepage from an intelligent browsing system, wherein the intelligent browser homepage comprises a functional region and a page region; step 2, after obtaining the intelligent browser homepage, the mobile terminal transmits a webpage obtaining request to the intelligent browsing system through the intelligent browser homepage while being needed to browse the webpage; step 3, the intelligent browsing system receives the webpage obtaining request of the mobile terminal, obtains the webpage requested by the mobile terminal, embeds the obtained webpage requested by the mobile terminal into the page region of the intelligent browser homepage and transmits the intelligent browser homepage embedded with the webpage to the mobile terminal; step 4, a mobile terminal localbrowser receives the intelligent browser homepage, and parses and represents the intelligent browser homepage. The implementation method and the system thereof for the intelligent browser of the mobile terminal can migrate the capability of the terminal to a network side through a web edition browser, so that operation requirements on the terminal are reduced, and power consumption is also reduced.

The invention provides a call method for a game engine system and the game engine system for exploiting a 2D scene and a 3D role. The game engine system comprises an application module, an engine module and a scene module. The call method comprises the steps that 1 initialization is conducted on the engine module through the application module; 2 the application module sends an order of changing a map to the engine module, the scene module sends an order of generating the new map to call a map module, and the 2D-scene map is loaded and is returned to the scene module; 3 the application module sends an order of generating a new role to the engine module, and the scene module calls a role module to generate a new 2D or 3D role and return the new 2D or 3D role to the scene module according to the order of generating the new role; 4 the application module sends an order of generating a new special effect, and the scene module calls a special-effect module to generate a new 2D or 3D special effect and return the new 2D or 3D special effect to the scene module according to the order of generating the new special effect.

The invention discloses a device and a method for detecting drilling fluid return flow. The device comprises one or more flow measuring short sections (5) arranged between a drilling fluid return port (3) of a shaft and a vibration screen (4); the flow measuring short sections comprise a rectangular-cross-section overflow section (6) and a horn mouth buffer section at two ends of the rectangular-cross-section overflow section (6); a fluid level sensor (1) is installed on the top of the rectangular-cross-section overflow section (6); a flow speed sensor (2) is installed inside the internal fluid in the rectangular-cross-section overflow section (6); and the fluid level sensor (1) and the flow speed sensor (2) are respectively connected with a calculation and display alarming unit (8) electrically. With the adoption of the device and method for detecting the drilling fluid return flow, the problems that an existing mud return flow measuring device is not high in precision, delayed in reaction, larger in error especially when the flow is smaller and the like are solved; the measuring section adopts a rectangular cross section that the fluid level and the height are in linear change; the requirements of flow detecting equipment on the calculation means are reduced; and the device and method for detecting drilling fluid return flow is high in measurement precision and good in timeliness.

The invention discloses a method for extracting and displaying text messages from a television signal and a television. The method comprises the steps of: receiving at least one frame of television signal; obtaining a static image from the television signal; intercepting a detection image from a set region on the static image, wherein the set region covers the text messages on the static image; identifying the detection image, extracting the text messages; and displaying the extracted text messages. According to the invention, specially aiming at the characteristics of the text messages on a television image, through intercepting a part on the static image, including texts, the detection image with a smaller detection region is formed; therefore, compared with the prior art, the method has the advantages of reducing operation requirements, and increasing identification efficiency; and according to the particularity of the television signal, through comparing two frames of images, an image background can be removed, and the text messages can be conveniently extracted.

The invention discloses a multi-frequency emission beam formation method. The method includes: (1) the beam direction of an emission array of a crossed array is divided into a plurality of sectors, a series of sector sonar beam signals of different frequencies are emitted in sequence in each sector, and the sector sonar beam signals with each frequency point to a beam direction in the corresponding sector; and (2) after the sector sonar beam signals with all the frequencies in each sector are emitted, sonar echo signals are received by employing a reception array in the crossed array, frequency information corresponding to all the sector sonar beam signals in each sector is extracted via discrete Fourier transform, beam formation calculation is performed in frequency domains corresponding to the frequency information, and a beam intensity result is obtained. According to the method, the emission time of the crossed array can be reduced, the beam performance similar to a two-dimensional plane reception array is obtained, and the complexity of an underwater real-time three-dimensional acoustic imaging system is reduced. The invention also discloses the application of the method in the reconstruction of three-dimensional acoustic images.

The invention relates to an idle traffic light control method based on reinforcement learning, and the method comprises the following steps of employing a SlimYOLOv3 model to sense an environment, analyzing a scene, recognizing all vehicle types of targets in the scene, and positioning the positions of the targets through defining a bounding box around each target; adopting a DQN-based reinforcement learning method to train a traffic light control intelligent agent, a) defining an action space, enabling the traffic lights to randomly select actions according to probabilities, and adopting a greedy algorithm to randomly select the actions according to the probabilities; b) defining a state space, wherein the road surface state observed at any moment is the number of vehicles in different intervals in each direction, and an observation state value is a six-dimensional vector; c) defining a reward function, wherein the penalty weights of the three interval road sections are respectively defined as the specification, and the reward value is the sum of the penalty weights of the road sections; and d) learning a strategy enabling the reward value to be the highest by adopting the DQN-based reinforcement learning method to obtain the traffic light control intelligent agent with high performance.