72results about How to "Short search time" patented technology

The invention discloses a mobile Agent path planning method under an unknown environment. Aiming at the problems of long search time and high probability of causing early delay in case of more and larger barriers at the time of performing mobile Agent path planning by using an ant colony algorithm in the prior art, the invention provides the mobile Agent path planning method under the unknown environment. A mobile Agent can be more effectively kept away from the barriers by modeling the environment through a grid method, establishing a 01 matrix for representing a global grid map, performing path planning according to the global grid map and enhancing the purposefulness of path selection through a path selection strategy of the anti colony algorithm. The method has the advantages of short search time and small space complexity.

A control system connected to a plurality of array antenna performs beamforming. In order to perform the beamforming, the control system receives response beams inputting to a first antenna group predetermined from a plurality of array antenna in response to radiate beams and decides a sector having comparatively stronger intensity. And the control system receives response beams inputting to a second antenna group, decides a plurality of beam levels and decides a final beam pair among the plurality of the decided beam levels.

The invention discloses a method that implements synchronization for a WCDMA system. The method introduces a globe synchronization time to the WCDMA system as a reference time for signal transmitting of all NodeBs; when searching adjacent cells or making handover, each UE takes this reference time as a reference time; in this way, the UE design complexity is reduced, the UE available time is increased, the handover signaling is simplified and the handover success and reliability are increased too. Therefore, the method increases system capacity and makes service quality better.

The invention provides a method for sending out and receiving the lead code of a broadband wireless communication system. The method for sending out the lead code can send lead code symbols containing the synchronized information of the system to a terminal side by a base station side before the base station side sends out a frame control head and includes that the lead code is divided into an original lead code symbol and a strengthened lead code symbol carrying the different synchronized information of the system; the original lead code symbol and the strengthened lead code symbol are then combined to be sent out after the positions of the two lead code symbols in a wireless frame are determined. The method for receiving the lead code includes that the step of frame synchronization is first completed and the step of frequency synchronization is then completed; and then the received data is matched with the local reference information to obtain the information carried by the strengthened lead code and finally obtain the information carried by the original lead code. The method for sending out and receiving the lead code improves the detection probability of the lead code and the adaptive scope of the system to frequency deviation, therefore, the quantity of cells supported by the system is greatly increased and the time for searching the cells is shortened.

Embodiments of the present invention provide a client system and a server for searching, through the Internet, useful information that matches more closely a user's intention. The system is used for searching questions or answers posted by members in a Q&A (question and answers) site which is used by users who are registered as members. The members are then classified into multiple types based on a database, in which posted questions and answers were separated, and attribute information of members. For each question and answer, the tendency of the type who often supports the contents is stored. In this way, a question or answer is searched based on not only a search keyword but also on a type of searcher.

The voltage-oscillator (VCO) in a frequency synthesizer using a phase-locked loop (PLL) is calibrated during power up or channel switching. The VCO has a coarse frequency control and a fine frequency control. The coarse control consists of digital bits that are used for calibration. The coarse control is connected to the charge pump output as in a regular PLL. By searching for the optimal control setting, the center frequency of the VCO is trimmed close to the desired frequency for the PLL to lock. This allows small VCO gain without losing the tolerance of process and temperature variations. As a result, the PLL phase noise performance is improved.

This invention discloses a method for transmitting signal by an emission end of an OFDM system and a search method of local areas by mobile terminals, in which, the emission end transmits local area ID signal on a last OFDM symbol of the sub-frame and the mobile station realizes the area search by synchronization of sub-frames, area identification and synchronization of OFDM, which sets local area ID signals on the last OFDM symbol and transmits it, and sends the system information at the position closing to the pilot symbol on the sub-frame with fixed circular prefix, so that, mobile terminals can finish the search without testing circular prefix.

A recording medium which has a high recording density and realizes a short search time is provided. The recording medium according to the present invention is a recording medium which comprises addresses indicative of positions on the recording medium and which is for recording or reproduction using sectors as data rewrite units or data read units, and starting positions of said addresses and starting positions of said sectors are different in the recording medium.

The invention relates to the technical field of gas detection, in particular to a gas monitoring method and system capable of achieving multi-channel real-time monitoring and rapid leakage positioning. The gas monitoring method capable of achieving multi-channel real-time monitoring and rapid leakage positioning comprises the steps that gas in an area to be monitored is collected through a multi-channel gas sampling system; the collected gas to be monitored is pretreated through a gas treatment system; the concentration of the pretreated gas to be monitored is detected through a gas detection system; and the gas concentration value is received through a control system, and whether gas collection pipelines leak or not is judged according to the preset gas concentration threshold value. The leakage conditions of the multiple gas collection pipelines can be monitored in real time through one gas detection system, and the operation cost is low. The gas collection pipelines which leak are rapidly positioned through dichotomy, the searching time is short, and the automation degree is high; and the gas to be monitored is pretreated through the gas treatment system, and the gas detection accuracy rate is improved.

The embodiment of the invention provides a conversation voice processing method and a mobile terminal. The method comprises the steps of: converting conversation voice to text, wherein the conversation voice is voice generated by user communication through a mobile terminal; identifying conversation mood corresponding to the conversation voice; determining conversation emotion keywords corresponding to the conversation mood and identity identifiers of conversation objects corresponding to the conversation voice; and performing corresponding storage of the text, the conversation emotion keywords, the identity identifiers and the conversation voice. According to the conversation voice processing scheme provided by the embodiment of the invention, when a user searches certain conversation voice in advance, the user only needs to input keywords, and the mobile terminal can find out the conversation voice corresponding to the keywords with no need for manual searching of conversation voicesone by one by, and therefore, the searching is short in time consumption and high in efficiency, and the user usage experience can be improved.

The present invention relates to a method and a device for finding nearest neighbor. In particular, it relates to a sorting, searching and matching multiple dimensional data, such as vectors, in order to find the nearest neighbor. The method is particularly useful as part of a SIFT algorithm.

The invention discloses a star sensor star map identification method based on a convolutional neural network. The star sensor star map identification method comprises the following steps: carrying outstar filtration treatment on the original star catalog, establishing a navigation star catalog, carrying out statistic on constellations of the whole celestial sphere navigation stars, and numberingthe constellations, wherein a sample library is composed of a simulation star map and numbers of the constellations corresponding to the most stars; replacing the original star map with a sparse matrix, inputting a sample library star map into the convolutional neural network, and carrying out training; carrying out star image extraction on a star map obtained by shooting, converting the extractedstar image into a sparse matrix, then inputting into the convolutional neural network, carrying out coarse attitude star map identification, and obtaining a rough orientation; and identifying a fixedstar in a view field by applying a local sky area star map identification algorithm. The star sensor star map identification method disclosed by the invention has the advantages that a trained convolutional neural network is adopted for realizing coarse attitude whole celestial sphere star map identification, the navigation star catalog does not need to be searched, and the local sky area star map identification only needs to search a small part of a database; and the convolutional neural network has the capability of autonomously extracting characteristics of the original map and has stronganti-noise and anti-fake-star performance when being applied to star map identification.

The invention discloses a method and system for searching computer files. The method for searching the computer files comprises the following steps of: acquiring a search character string, determining whether the length of the search character string is more than 1, if so, splitting the search character string into single characters, and respectively acquiring a first file set in which the file name contains each character according to a memory-based index generated by pre-generated index files; screening the first file set according to the index files to acquire a second file set in which the file name contains all the characters in the search character string; and screening the second file set according to the index files to acquire a final search result file in which the file name contains all the characters. The method and the system for searching the computer files, which are disclosed by the invention, have the advantages of short search time and high search efficiency because files the file name of which contains the search character string from a search directory are found out according to the memory-based index generated by the pre-generated index files without comparing each file name and the search character string.

The invention uses the universal PID (Proportion Integration Differentiation) control policy, can realize the self-optimization of a boiler combustion 'fuel-air' rate value by selecting and designing PID controller input signals, has the characteristics of complete self adaptation, quick searching speed, good astringency and simple algorithm, solves the outstanding and typical problems in the traditional constant value rate method in boiler combustion control that the combustion rate can not be automatically regulated along with a working condition to keep optimal, and the like and also overcomes the defects in aspects of optimizing astringency and algorithm complexity in a combustion rate self-optimizing algorithm based on fixed step sizes and variable step sizes and realizability and easy possibility in a DCS (Distributed Control System) or FCS (Fly Control System) control system. The boiler combustion rate self-optimizing method has simple algorithm, is easy to realize, is very easy to realize on the traditional DCS / FCS platform for adopting the common PID control module and has better transportability.

The invention relates to a laser polarization state control stabilizing device and control stabilizing method. A polarization controller, a polarizer and a beam splitter of the device are sequentially connected through optical fiber; a large light beam is split from the beam splitter and is used as output light; a small light beam is used as monitoring light to be connected to an electric control assembly; the control voltage of the small light beam is accessed into an optical fiber extruding type polarization controller. According to the method, the electric control assembly presets voltage for each extruding element of the polarization controller; the control voltage of each extruding element is sequentially scanned; the control voltage of each extruding element is set into the corresponding voltage at the greatest linear polarization state output during scanning, i.e., the polarization controller optimum control voltage. During the stabilizing control, the current linear polarization state output is monitored and is compared with the maximum output; when the difference between the current linear polarization state output and the maximum output is greater than a threshold value, the control voltage of each extruding element is regulated, so that the output maintains the maximum. The stabilizing control is repeated. When the control voltage of a certain extruding element reaches the control limit, the control voltage is subjected to step increase and decrease to leave away from the limit. The optimal control voltage of the polarization controller is fast and effectively obtained; the linear polarization output is enabled to be the maximum for a long time.

The present invention discloses a method for reinforcing the predecessor of the broadband wireless communication system based on the orthogonal frequency division multiplexing technique, wherein each wireless frame of original system is added with a new preamble symbol. The invention also discloses a cell searching method of the mobile terminal in an orthogonal frequency division multiplexing technique. The method comprises the steps of frame synchronizing, frequency synchronizing, extracting and recognizing the cell ID group signal, and extracting and recognizing the cell ID in-group signal. The orthogonal frequency division multiplexing system transmitting end preamble reinforcing method and a cell searching method according to the invention increases the detection probability of the preamble and the adapting range of the system to the frequency offset through arranging novel preamble at the vicinity of the original preamble and designing the preamble which has symmetric time domain and is provided with PN sequence. Through the introducing of the cell grouping information, the number of the cells supported by the system is greatly increased. The realization is simple and the cell searching time is short.

The invention relates to a rapid target tracking method and a device. The tracking process comprises space identification, target extraction, fitness function calculation and particle parameter calculation and update. A particle update speed is improved so as to make the particle realize faster convergence, a selection mode is employed for particle position update, and optimal solution population evolution is carried out. The device comprises an image acquisition unit, a tracking searching unit and an output unit. The method and the device are advantaged in that, simpleness and high efficiency are realized, searching matching time and computational complexity are reduced, and target tracking accuracy and efficacy are improved.

The TV program signal searching method includes feeding the initial frequency to the tuner, waiting for one normal time A, detecting AFT value and judging whether to have station there with auxiliary line frequency signal; if yes, maintaining the frequency of the station; increasing frequency by 3-4 MHz, if no, increasing frequency by 50 KHz, delaying for very short time C and judging whether to have station there; and repeating the above said steps until reaching the ultimate frequency and stopping search. The TV program signal searching method has one search time of 60-70 sec from 44.75 MHz to 961 MHz, has no frequency list problem, and is suitable for various area with different frequency list.

We describe a method of searching data in a data file in a storage device connected to a computer, the method comprising: maintaining the data file in a first database in the storage device, wherein the data file comprises at least one text entry, each text entry comprising an alphabetical word and at least one character; storing a copy of only the alphabetical word of each text entry in a second database in the storage device; associating a unique reference code with the copy of the alphabetical word of each text entry in the second database; creating a record of the associated unique reference code in the first database; associating the record of the associated unique reference code in the first database with the corresponding text entry of the data file maintained in the first database; and performing search of a search string entered by a user by using the copy of the alphabetical word of each text entry in the second database and by using the associated unique reference code in the second database and the record of the associated unique reference code in the first database to identify results of the search of the search string.

The invention discloses a network communication method applicable to a space-based network. A physical layer mechanism applicable to space-based network communication is provided, thus overcoming the defect that the traditional space-based communication is only applicable to point-to-point communication. The method is applicable to the system workflow of multi-point network communication of a space-based system and is in support of a network access process and a service process, therefore the network control and coordination are simple, the signalling cost is low and the network establishing time is short. The expansibility is high, and therefore, network scale and user demand changes are supported. A system frame structure in consistent with the system workflow is provided, and therefore the method is applicable to the network communication demands of current multiple satellites. A physical layer transmission scheme applicable to the multi-point network communication of the space-based system is provided. The scheme comprises a physical layer signal generation process and resource unit structures. Through design of the frame structure, the propagation time delay is ensured, and therefore, the method is applicable to service with high time sequence demand or high timeliness. Various priorities and various service types are supported, and therefore, the flexibility is high. SYN is carried in the frame structure, therefore, according to a synchronization process, the search time is short, the synchronization establishing time is short, and long term tracking is unnecessary.

The present invention relates to a method and a device for finding nearest neighbor. In particular, it relates to a sorting, searching and matching multiple dimensional data, such as vectors, in order to find the nearest neighbor. The method is particularly useful as part of a SIFT algorithm.

A method to generate synthetic data instances. The method includes generating a synthetic data instance for an input variable value of an input variable supplied to the generative model, classifying the synthetic data instance to generate a classification result, determining a loss function value of a loss function, the loss function evaluating the classification result and determining the gradient of the loss function with respect to the input variable. Depending on the absolute value of the gradient, the method includes generating a plurality of modified input variable values, determining, for each modified input variable value, the gradient of the loss function, combining the gradients of the loss function to generate an estimated gradient, and modifying the input variable value in a direction determined by the estimated gradient to generate a further input variable value. The generative model generates a further synthetic data instance for the further input variable value.

The present invention provides a method and system for finding the resonant frequency point of a transducer. The method includes the following steps that: S1, the minimum operating frequency and maximum operating frequency of the transducer are obtained; S2, a resonant frequency point preset value is set, a hop-up interval is formed with the maximum operating frequency and the resonant frequency point preset value, and a hop-down interval is formed with the resonant frequency point preset value and the minimum operating frequency; S3, if the current phase of the transducer exceeds the voltagephase of the transducer, a current interval hops to the hop-up interval, otherwise, the current interval hops to the hop-down interval; S4, a new hop-up interval and a new hop-down interval are formedwith two end point values of the current hop-up interval or current hop-down interval and corresponding intermediate point frequencies; and S5, if the current phase exceeds the voltage phase, a current interval hops to the new hop-up interval, otherwise, the current interval hops to the new hop-down interval, and the step S4 and step S5 are repeated, and the frequency of the transducer when the current phase and the voltage phase are the same is adopted as a resonance frequency point. With the method and system of the present invention adopted, the number of the times of finding can be greatly reduced through frequency hopping.

An access terminal defines a search window based on a distance between access points. Here, a first one of the access points may comprise a macro access point from which the access terminal acquires timing. The search window may be used to monitor for pilot signals from a second one of the access points. For example, the second access point may comprise a femto node that provides relatively small area coverage. In some aspects the definition of the search window may involve adjusting (e.g., advancing) a center of a search window based on the distance between the access points. In addition, the access terminal may employ a smaller search window when it is searching for pilot signals from a femto node as compared to when it is searching for pilot signals from a macro access point.

A method and an apparatus are provided, the apparatus includes a correlator configured to correlate samples of a frame format signal with a reference signal; an adder block configured to sum the correlation results over a given time period; a comparator configured to compare the sum with a given reference value; a controller configured, if the sum exceeds the reference value, to make the decision that a frequency correction channel has been detected, store the position of the frequency correction channel in the frame format signal and cease the correlation process; and otherwise configured to control the correlation and comparison to continue until the time reserved for the correlation process ends, to retain the value in the adder block; and to control the apparatus to resume the above process when a new time reserved for the correlation process is due.

The invention discloses a trip-out breaker adaptive search method based on Dijkstra algorithm, and the method comprises the following steps: 1) obtaining the adjacency matrix of the circuit breaker and the adjacency matrix of the protected element and the circuit breaker; 2) updating and correcting the adjacency matrix of the protected element and the circuit breaker; 3) determining whether there is a faulty element in the smart grid; 4) calling the Dijkstra algorithm module to make a first judgment and to obtain the trip-out circuit breaker; 5) performing a first updated correction to the adjacency matrix of the breaker; 6) determining whether the trip-out circuit breaker fails or not; 7) determining whether the direct current power supply disappears or not; 8) performing a second updated correction to the adjacency matrix of the breaker after the first updated correction and 9) calling the Dijkstra algorithm module to make a second judgment and getting the number of the trip-out circuit breaker finally. According to the invention, the adaptive search time is short, and the method is very adaptive for onsite main wiring manner and the change in the running mode so as to ensure that the cutting scope of the trip-out breaker is minimal.

The invention provides a form system data source data-binding method, concretely a method for binding the data concentration data on a control in a form design, in order to solve the problem that the searching time is long due to large manipulated quantity of binding relation establishment and data set change in a complex form design. The method uses the binding relation object comprising the binding relation type and the binding relation value to represent the binding relation and manages the binding relation by setting an overall binding relation matrix, convenient for the operation of the binding implement and the form program run efficiency is increased.