183 results about "Time transformation" patented technology

An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.

The invention provides a method for detecting website threat based on a real-time log. The method comprises the steps of acquiring log data of a website log server on real time; transforming the log data and distributing on real time; processing and detecting the log data on real time; displaying the website threat detection result on real time; early warning the severity of the detection result on real time. The invention further provides a system for detecting the website threat based on the real-time log. The system comprises a log data real-time acquiring unit, a log data real-time transformation and distribution unit, a log data real-time processing and detecting unit and a log data real-time monitoring unit. With the adoption of the method and system, the processing capacity and timeliness of the log data can be improved; the timeliness of website threat detection and reaction can be improved; the website operation risk can be reduced; the information security of the website can be greatly ensured.

The invention relates to a novel molecular cloning method, and in particular to a method for obtaining recombinant vectors by modifying initial vectors through combined utilization of a CRISPR/Cas9 system and a saccharomyces cerevisiae cell endogenous gene homologous recombination system; only through one-time transformation and selection operations, the method can simultaneously complete insertion of ore or more target DNA fragments into the initial vectors, deletion of one or more DNA fragments from the initial vectors and/or substitution of one or more DNA fragments on the vectors for one or more target DNA fragments. The invention further relates to a reagent kit for conveniently and effectively applying the method provided by the invention.

A method of transmitting digital information over a dispersive optical channel includes encoding the digital information into a series of data blocks, wherein each block comprises a plurality of substantially orthogonal frequency domain subcarriers. Each data block is then divided into at least two frequency bands, each band comprising a plurality of contiguous subcarriers. A frequency/time transformation is then performed, in order to form a corresponding plurality of transformed bands, each transformed band comprising a sequence of time domain data samples. A time delay is applied to at least one of the transformed bands relative to at least one other of the transformed bands. The bands are then combined to produce an electrical signal waveform embodying the digital information. Finally, an optical source is modulated using the electrical signal waveform, to produce a corresponding optical signal for transmission over the dispersive optical channel. The invention enables a reduction in the duration of guard intervals that may need to be inserted into the transmitted data blocks, in order to avoid received signal degradation due to inter-symbol interference caused by dispersion in the optical channel. Transmission overheads may thereby be reduced, resulting in an improvement in transmission efficiency.

A time correlated single photon counting system having a programmable delay generator triggered by a laser fire event detector. The system may be used for chemical agent detection based on Rayleigh scattering using optical time domain reflectometry techniques. The system may also be used for Raman detection using frequency to time transformations.

The invention discloses a rapid face three-dimensional model generation and transformation method based on a single image. According to the method, a three-dimensional face model can be generated in real time by using a single frontal face image so that the three-dimensional model can be used for application of real-time human-computer interaction, such as multi-angle face identification, 3D printing and face changing. Real-time transformation between the face and other faces can also be realized on the basis. The rapid face three-dimensional model generation and transformation method based on the single image is simple in operation, high in generation speed and sufficient in precision.

A remote pulse TDR liquid level measurement system and method may include inserting a probe into a body of water. The probe has a probe/air interface, and the body of water includes an air/water interface. A narrow pulse is remotely transmitted to the probe via a coaxial cable. A first impedance mismatch is received from the probe/air interface in a form of a positive reflected pulse, and a second impedance mismatch is received from the air/water interface in a form of a negative reflected pulse. A time between the positive reflected pulse and the negative reflected pulse is calculated, and the time is converted to a distance, the distance being indicative of the water level.

The invention discloses a bus stop OD acquisition method based on a city intelligent transport system, and a bus station card swiping OD array is obtained through reasonable processing and right matching of bus running and passenger IC card swiping data which are provided by the city intelligent transport system. On the basis of card swiping numbers of city IC cards and running revenue of the bus transport system, sample expansion is performed according to the ratio of the card swiping numbers of the city IC cards and the running revenue of the bus transport system, and the OD array is finally obtained. According to the method, the effects the conditions that passengers swipe the cards for many times and changes routes and the like have on a station OD are fully considered, and data of an IC card swiping trip in one time can be well processed. The method is favorable for calculating, strong in practicability, capable of achieving real-time transformation, automation and rapidness of obtaining of the station OD by utilization of computer programs, and providing data supporting for optimization and planning of a city bus route net, and establishment of a bus vehicle scheduling scheme, and greatly significant for improvement of current situations of city buses.

The invention provides a processor and a method for realizing multi-timezone continuous service, which provides a processor for realizing multi-timezone continuous service to solve the problem that multi-timezone continuous service cannot realize through a financial system offering continuous service in the current technology. The processor adds a operational date-time control unit to the current continuous service system, which transforms system date and time to local date and time of the business areas, so as to realize the target of offering multi-timezone continuous service, of which the date cut-over is based on local date and time. The beneficial effect of the invention lies in that through a simple modification of the financial system, the processor can realize global continuous service for customers with low cost and high efficiency based on the current system.

The invention discloses a low SNR (signal to noise ratio) speech noise reduction method. The method comprises the following steps of: framing an input voice signal, multiplying each frame of the input voice signal into a Hamming window, carrying out time-frequency transformation and calculating spectral power distribution of the signal; according to a state of the received signal, judging to carry out gain oscillation detection on the received signal and updating bottom noise spectral power distribution; after calculating spectral distribution, inspecting an SNR and carrying out MMSE (Minimum Mean Square Error) noise suppression; calculating a frame SNR and storing and updating the frame SNR in a certain recent time; carrying out spectrum enveloped multistate transfer, and according to a state output of the state transfer, judging whether the input signal is speech or noise; carrying out frequency-time transformation and window overlapping on the signal subjected to noise reduction, carrying out speech head protection on the output signal, and according to a silence detection result, outputting the speech or silenced voice subjected to noise reduction. According to the invention, the short-wave communication noise can be effectively inhibited, quality of communication voice is improved, and effectiveness of speech noise reduction is technically ensured.

The invention provides a method and a device for correcting time of a network behavior log, relating to the field of Internet and solving the problems caused by correcting behavior access time in the log. The method comprises the following steps that a server collects time data information of a received log data packet, and the time data information comprises client time that a user behavior occurs, client time that the log of the data packet is uploaded through the client and server log uploading time; the client time that the user behavior occurs is converted to server time that the user behavior occurs; and the server time that the user behavior occurs is converted according to a time difference between the server and a standard server so as to obtain standard time of the log. The technical scheme provided by the invention is suitable for collection of the user behavior time data, and the behavior access time in the log is corrected without modifying the client time.

The invention, which relates to the technical fields of traffic information and control, provides a guide lane signal control method for realizing go-straight and left turning changing at a road intersection. The method comprises: a running rule of a lane is made and a variable arrow signal light is set; main signal timing is calculated by using a Webster formula; according to a phase difference between a pre signal and a main signal, pre signal timing is determined; and a pre signal light, a lane-changing prompting mark line and a traffic sign are set to realize cyclic changing between a go-straight lane and a left turning lane for a guide lane. According to the method provided by the invention, a lane at the entrance of a road intersection is set to a viable guide lane shared by left turning and going straight; and the road resources are allocated again based on the function of pre-signal-based real-time transformation of the go-straight and left turning of the variable guide lane under the condition of the traffic flow with unbalanced layout, so that the utilization rate of the traffic facility of the road intersection is increased.

The invention relates to the food field, in particular to a shell food freshness determination system based on a density model and a method of the system. A freshness weigher contains a two-dimensional code for software recognition, a groove for fixing food, a gradienter, a weighing disc for calculating the mass of the shell food and a positioning circle capable of estimating the size of the shell food. Freshness software (an APP, a wechat number, a microblog number and a cloude program) acquires an image through a phone camera under a normal daylight lamp (the illuminance is 100-160 Lux) and performs category recognition, mass recognition and size estimation of the shell food according to the acquired image. An automatic substituting and judging model has the advantage that intelligentilization, feedback real-time transformation and model control parameters can be updated in real time on the networking condition and is mainly used for real-time detection on the freshness of part of the shell food in daily life. Through resolving of the judging model set, a series of judging values and judging conclusions of the shell food freshness are obtained without needing to measure all specific indexes, and information is transmitted in real time. Judging results are judged through an indication interval with a certain confidence degree.

The invention discloses a laser production technology for a radio frequency identification antenna capable of easily discharging waste. In the laser production technology for the radio frequency identification antenna, changes of positions and dimensions of positioning marks at two sides of a radio frequency antenna substrate in X and Y directions are detected; real-time transformation is carried out on the shape, the dimension, the position and the angle of an engraved pattern through an adaptive algorithm according to the materials, the thicknesses, the composite temperatures, the environment temperatures and the humidities of a used metal film and the antenna substrate and the antenna design pattern and composition condition; meanwhile, laser engraving is compensated according to the monitored working temperature in a laser scanning system; and the influence of a temperature drift of the laser scanning system on the dimension and the position of the engraved pattern is reduced, so that the error of the system for overlapping positioning of the engraved pattern and a printed pattern is controlled within 20 microns or to be smaller than 1/2 laser spot size; the waste discharge technology is relatively easy to implement; the key problems of pattern positioning and edge tracking in the industrial process of the laser production technology for the radio frequency identification antenna are solved; and the industrialization process of the laser antenna production technology is pushed.