53results about How to "Improve comparison accuracy" patented technology

An ultrasonic image 105, 106 is captured by an ultrasonic probe 104. A reference image 111 is obtained by extracting a tomographic image corresponding to the scan plane of the ultrasonic image from volume image data that is pre-obtained by a diagnostic imaging apparatus 102 and that is stored in a volume-data storing unit 107. The ultrasonic image and the reference image 111 are displayed on the same screen 114. In this case, of the reference image, a portion corresponding to the view area of the ultrasonic image is extracted and the resulting reference image having the same region as the ultrasonic image is displayed as a fan-shaped image.

The invention discloses an LED (light-emitting diode) backlight drive circuit, a liquid crystal display device and a drive method. The LED backlight drive circuit comprises a plurality of LED lamp bars arranged in parallel and a detection module, wherein a comparing unit is arranged in the detection module, the comparing end of the comparing unit is respectively coupled to the output ends of the LED lamp bars, and the reference end of the comparing unit is coupled with an adjustable reference voltage module. Due to the adoption of the comparing unit, and the reference end of the comparing unit is coupled with the adjustable reference voltage module, different reference voltage values can be selected according to the voltages of the output ends of the LED lamp bars of different liquid crystal displays, the difference of the voltages of the output ends of the LED lamp bars and the reference voltage is controlled within a reasonable range, the comparing accuracy can be effectively improved, then the maximal difference is fed back to the power source end of a drive, and the output of the power source is regulated.

The invention relates to an identity authentication method based on face recognition technology, a device thereof and a system thereof. The method comprises a step of acquiring the ID card number of the ID card of a person to be authenticated and acquiring the head image of the person to be authenticated through a camera, a step of carrying out one-by-one comparison between the head image and all standard images of the population information database of the ministry of public security so as to obtain a standard image list, a step of comparing the ID card number of the ID card of the person to be authenticated with all standard images in the standard image list and judging whether the ID card number of the ID card of the person to be authenticated is consistent with an ID card number corresponding to a standard image with the highest similarity, and if so, passing the authentication. The face recognition technology is used, the image and the ID card number information can be rapidly obtained in the improved population information database of the ministry of public security, the self-help authentication can be carried out through terminal equipment, thus the labor cost is saved, the working efficiency is raised, the used comparison technology is a 1:N mode, and thus the comparison accuracy is improved further.

The invention relates to a full-text difference comparison method, comprising the following steps: a comparison part and an original part recognize characters through an OCR recognition engine and generate recognition text, wherein the recognition text contains coordinates corresponding to each character; Text recognition adopts text comparison algorithm to compare the difference characters and obtain the coordinates of the difference characters. the difference text is located and the difference text is marked in the contrast. The invention also relates to a full-text difference alignment device. The invention combines the OCR intelligent recognition and the text comparison algorithm, quickly compares the difference characters, locates and marks the difference characters according to the coordinates, greatly improves the efficiency and the comparison accuracy rate; 2, the system can recognize the file format and can convert the text format to the image format image, therefore, it is suitable for the difference comparison of various file formats, and the application range is wide.

A DC protection scheme for protecting a DC power transmission medium within a DC electrical power network. The scheme includes a protection device coupled to a DC power transmission medium, being operable to protect the power transmission medium from a fault; an apparatus to measure at least one electrical property of the power transmission medium; and a controller programmed to determine the direction of the electrical fault; determine whether the electrical fault is an internal or external fault; and operate the protection device to protect the DC power transmission medium if the determination of the direction of the electrical fault and / or the determination of whether the electrical fault is an internal or external fault meet a predefined criterion.

If spatial measurement point intervals in imaging mass analysis data of two samples to be compared are different and the degrees of spatial distribution spreading of substances are compared, one of the data is defined as a reference, the measurement point intervals in the other of the data are redefined so as to be equalized to the reference, and a mass spectrum at each virtual measurement point set as a result of the redefinition is obtained through interpolation or extrapolation based on a mass spectrum at an actual measurement points. If the arrays of the m / z values of mass spectra are different for each sample, the m / z value positions of the mass spectrum in one of the data are defined as a reference, and the intensity values corresponding to the reference m / z values are obtained through interpolation or extrapolation for the mass spectrum of the other of the data.

A method for checking cooling holes of a gas turbine blade, including in sequence: step 1: injecting a liquid plastic material into a cooling hole of a gas turbine blade; step 2: stopping the flow of the liquid plastic material, and curing the liquid plastic material to form a model; step 3: separating the model from the gas turbine blade; step 4: scanning the model. By scanning the model, the cooling holes of the gas turbine blade can be checked, so as to obtain more data about the position, dimensions and shape thereof, while improving the accuracy and efficiency of measurement.

An output current detecting circuit includes: a current detecting transistor having a size smaller than that of an output transistor and a control terminal, to which a voltage same as a control voltage of the output transistor is applied; a sensing resistor connected to the current detecting transistor in a serial mode; a comparison circuit comparing a voltage converted by the sensing resistor and a reference voltage to judge a magnitude of a current flowing through the output transistor; and a reference voltage generating circuit, wherein the reference voltage generating circuit includes a constant current circuit flowing a constant current and a resistance element having one terminal connected to a power source voltage terminal, the reference voltage generating circuit generating the reference voltage based on a power source voltage by the conversion of the constant current into a voltage by flowing the constant current through the resistance element.

The invention is a CMOS voltage comparer, a multistage amplifier, where, for each one, the first output end is connected with the first input end by a switch and the second output end connected with the second input end by a switch, the two switches are opened or closed at the same time; the input end of each amplifier is connected with the output end of the previous amplifier and the switches of all the amplifiers are opened or closed at the same time; a double-arrival single-converting circuit with two input ends connected with two output ends of the last amplifier; a multistage output reshaping circuit, where one input end is connected with one output end of the double-arrival single-converting circuit; DC isolating capacitors, situated in front of the input ends of all the amplifiers and the double-arrival single-converting circuit; a first switch, where an input signal is connected to the primary amplifier through the first switch and then an DC isolating capacitor; a second switch, where the other input signal is grounded through the second switch and the second switch and all the switches of the multistage amplifier are opened or closed at the same time.

A semiconductor integrated circuit includes a differential amplifier circuit receiving first and second input voltages, a latch circuit comparing a voltage received from a first output terminal of the differential amplifier circuit through a first capacitor and a voltage received from the second output terminal of the differential amplifier circuit through a second capacitor and providing a digital signal representing a result of a comparison between the first and second input voltages, and a third capacitor having a first terminal coupled to a second terminal of the first capacitor and a second terminal coupled to a second terminal of the second capacitor.

A semiconductor integrated circuit includes a differential amplifier circuit receiving first and second input voltages, a latch circuit comparing a voltage received from a first output terminal of the differential amplifier circuit through a first capacitor and a voltage received from the second output terminal of the differential amplifier circuit through a second capacitor and providing a digital signal representing a result of a comparison between the first and second input voltages, and a third capacitor having a first terminal coupled to a second terminal of the first capacitor and a second terminal coupled to a second terminal of the second capacitor.

The invention provides a low-power-consumption and low-delay current comparator based on Wilson current sources, and a circuit module. The low-power-consumption and low-delay current comparator basedon the Wilson current sources comprises a first Wilson current source and a second Wilson current source serving as an input stage, a differential amplifier serving as an intermediate stage, and an output gain stage serving as an output stage, wherein a first input current and a second input current, which serve as comparison objects, are respectively input into the first Wilson current source anda second Wilson current source; an output end of the first Wilson current source and an output end of the second Wilson current source are respectively connected to two input ends of the differentialamplifier; and an output end of the differential amplifier is connected to the output gain stage. A current structure provided by the invention has the advantages of high comparison precision and a low-delay propagation characteristic.

An output current detecting circuit includes: a current detecting transistor having a size smaller than that of an output transistor and a control terminal, to which a voltage same as a control voltage of the output transistor is applied; a sensing resistor connected to the current detecting transistor in a serial mode; a comparison circuit comparing a voltage converted by the sensing resistor and a reference voltage to judge a magnitude of a current flowing through the output transistor; and a reference voltage generating circuit, wherein the reference voltage generating circuit includes a constant current circuit flowing a constant current and a resistance element having one terminal connected to a power source voltage terminal, the reference voltage generating circuit generating the reference voltage based on a power source voltage by the conversion of the constant current into a voltage by flowing the constant current through the resistance element.

A first masking image of an input image is created by assuming that pixels in an area including the area of a target in all sample images are valid pixels while pixels in the remaining area are invalid pixels. The first masking image is used in a first comparison between the input image and each sample image to select an image that provides a best match as a provisionally selected sample image. In a second comparison, a second masking image corresponding to the provisionally selected sample image is used to select a final sample image. The second masking image is created from an individual sample image by assuming that pixels in an area including the area of the target are valid pixels while pixels in the remaining area invalid pixels.

The invention belongs to the technical field of natural language processing, in particular to a text implication recognition method and a device. The present invention aims at solving the problems ofcomplex feature description and feature extraction of sentences in the prior art. The text implication identification method of the invention comprises the following steps: the source sentence and thetarget sentence of the text implication pair to be identified are subjected to dependency syntactic analysis; according to the analysis result, the source sentence dependency triple set and the target sentence dependency triple set are obtained; the semantic relationship between the source sentence dependent triple set and the target sentence dependent triple set is compared and the comparison result is obtained. The semantic implication relationship between source sentences and target sentences is predicted according to the comparison results. The method of the invention can improve the comparison precision between sentences from the whole angle and the alignment precision between the dependent triples of the sentences, thereby improving the accuracy of the prediction of the semantic implication relationship. The device of the invention also has the above-mentioned beneficial effects.

In a comparator for use in a parallel A / D converter, the comparator (100) is provided with reset transistors (mra, mrb). When the comparator (100) is in reset state, the PMOS transistors (mra, mrb) are provided with the inverted signal / CLK of a clock signal and the voltages at two internal nodes (Va, Vb) becoming a differential pair are reset forcibly to a predetermined reset voltage by the reset transistors (mra, mrb). The inverted signal / CLK of a clock signal is generated with a predetermined time lag. When the comparator (100) is in reset state, reset release timing of the internal nodes (Va, Vb) is delayed behind the comparison operation timing of the comparator. Consequently, even if the frequency of the clock signal and the frequency of an analog input signal are increased, voltage balance is improved at the internal nodes forming a differential pair when the comparator is in reset state, and voltage comparison precision is enhanced.

The present invention discloses a method for evaluating, monitoring, and improving judicial system performance. Methods of the present invention are capable of evaluating any judicial center regardless of jurisdiction. The evaluation score generated according to methods of the invention is capable of being compared directly. Also disclosed are computer information systems and computer-implemented methods for carrying out the evaluation, monitoring, and improving method.

The invention discloses a blacklist multi-dimensional information verification method and system in case of data missing, a readable storage medium and a device. The verification method comprises thefollowing steps: S1, obtaining the basic information of the account registrant of the current transaction on the transaction platform, wherein the basic information is the registration information submitted by the account registrant at the time of registration and / or the dynamic information uploaded at the time of transaction obtained by the transaction platform; S3, mining the information of thesame field in the blacklist system from the acquired basic information; S5, comparing the mined information with each record in the blacklist system from the angle of each field, and recording the similarity value with each record and each field; S7, synthetically judging the comparison result of the similarity degree by adopting the decision tree algorithm, and judging whether the account registrant falls into the blacklist system or not. The method of the invention increases the dimension of comparison and improves the efficiency and accuracy of blacklist verification.

The invention discloses a self-calibration zero-crossing comparator and a direct-current conversion circuit. The self-calibration zero-crossing comparator comprises a first comparison module, a logicmodule, a compensation module and a second comparison module, wherein the first comparison module is used for comparing the reference voltage with the sampling voltage and outputting a state signal; the logic module is used for generating a logic control signal according to the state signal; the compensation module is used for biasing the first power supply signal to generate a bias signal and compensating the sampling voltage according to the logic control signal to generate a compensation signal; the second comparison module is used for comparing the bias signal with the compensation signaland outputting a zero-crossing comparison signal. The precision of the zero-crossing comparator can be improved on the basis of not increasing the cost.

If spatial measurement point intervals in imaging mass analysis data of two samples to be compared are different and the degrees of spatial distribution spreading of substances are compared, one of the data is defined as a reference, the measurement point intervals in the other of the data are redefined so as to be equalized to the reference, and a mass spectrum at each virtual measurement point set as a result of the redefinition is obtained through interpolation or extrapolation based on a mass spectrum at an actual measurement points. If the arrays of the m / z values of mass spectra are different for each sample, the m / z value positions of the mass spectrum in one of the data are defined as a reference, and the intensity values corresponding to the reference m / z values are obtained through interpolation or extrapolation for the mass spectrum of the other of the data.

The invention provides a program file comparison method and device. The method comprises the following steps of: before comparing a program set file corresponding to the last version and a program set file corresponding to the current version, firstly obtaining program files with the same names in program sets of the two versions; respectively obtaining non-code variable nodes in the two program files; replacing the non-code variable nodes in the two program files by preset characters to ensure that non-code variables of the two program files are completely the same after the replacement; comparing whether file contents of the processed program files are the same or not; and if the comparison result is negative, indicating that code parts of the program files of the two versions are different and storing the program file corresponding to the current version. By utilizing the method provided by the invention, the files, the code parts of which are different, in the program files of the two versions can be automatically recognized without artificially selecting the modified program files, so that the comparison efficiency is greatly improved and the comparison correctness is improved.

Implementations of the present specification disclose a comparison method and apparatus based on a plurality of face image frames and an electronic device. The method includes: obtaining a plurality of face image frames of a target object; selecting a first face image with a highest quality score from the plurality of face image frames, and adding the first face image to a candidate image set; in response to that a number of images in the candidate image set is less than a predetermined value, iteratively selecting, from the plurality of face image frames, a second face image that has a maximum average difference from all face images in the candidate image set in a predetermined parameter, to add the second face image to the candidate image set; and comparing the face images in the candidate image set with a stored face image of the target object.

The invention relates to a big data information collection system, and the system comprises a first database which is used for storing data collected from external data to the first database through a first transmission channel at a transmission speed V10; a collecting module which is connected with the first database through a second transmission channel and used for screening data matched with the key character string from the first database according to the input key character string, the collecting module comprises an establishing unit and a screening unit, the establishing unit is used for establishing the second transmission channel, the screening unit is used for transmitting the data screened from the first database to the acquisition module through a second transmission channel at a second transmission speed V20; and a central control module which is connected with the first database, the collecting module and the display module. By adjusting the first transmission speed and the second transmission speed, transmission speed matching is carried out according to the data transmission quantity during storage after transmission and data screening, efficient transmission of data is realized, and the data acquisition efficiency is improved.

The invention discloses a mistuning self-correctional high-speed data comparison latch which comprises an input geminate transistor P, an input geminate transistor N, a comparison latch module, an input control module, an output control module and a mistuning logic control module, wherein the input control module generates two signals to respectively control the input geminate transistor P and theinput geminate transistor N; then the input geminate transistor P and the input geminate transistor N are respectively output and are connected with the comparison latch module; latch output of the comparison latch module is connected with the output control module and the mistuning logic control module at the same time; the output control module are output to a sampling device; and the mistuninglogic control module generates two adjusting signals for respectively adjusting the number of geminate transistors of the input geminate transistor P and the input geminate transistor N according toa reset signal RESET and the latch output signal output by the comparison latch module, and adjusts the number of the geminate transistors of the two input geminate transistors to realize mistuning self-correction. The invention automatically corrects the number of differential input geminate transistors through a feedback mechanism to correct operating points and threshold voltages of the differential input geminate transistors and eliminate process deviation, and the differential input geminate transistors of the high-speed data comparison latch in a receiver are exactly matched.

The invention relates to a pipeline-SAR ADC digital inter-stage gain calibration method based on metastable state detection. The method comprises the steps: carrying out the step-by-step comparison of an analog circuit, dividing the step-by-step comparison into N stages, carrying out the metastable state detection of comparators in the second stage to the Nth stage, and outputting a metastable state pointer of each stage to a digital circuit; when the pointer received by the digital calibration circuit is 1, accumulating the current data until the number of the accumulated data reaches the upper limit, completing the calibration of the stage, averaging the accumulated sum of the data, and taking the averaged sum as the inter-stage gain between the stage and the previous stage; and repeating the steps to obtain the inter-stage gain of each stage, and processing the inter-stage gain of each stage to obtain a calibration result of the digital calibration circuit. According to the invention, errors caused by capacitor mismatch of a common traditional SAR-ADC can be greatly improved; Meanwhile, the region is smaller than that of a correction type pipeline ADC, so that the comparison precision is greatly improved.

The invention discloses a data comparison collision method and device. The method comprises the steps of obtaining a specified space-time range; performing data processing on the trajectory data in the space-time range, wherein the data processing comprises the steps of standardizing the track data into spatio-temporal data and performing spatio-temporal index processing on the spatio-temporal data to obtain spatio-temporal feature index data; performing spatio-temporal feature denoising processing on the spatio-temporal feature index data to obtain denoised spatio-temporal feature index data,wherein the spatio-temporal feature denoising processing comprises the steps of marking whether corresponding data in one or more spatio-temporal parameter items exists or not from spatio-temporal feature index data; extracting collision data to be compared from a preset spatial-temporal feature library according to spatial-temporal index dimensions in the denoised spatial-temporal feature indexdata; and performing trajectory similarity calculation on the trajectory data and the collision data to be compared to complete spatio-temporal data comparison collision. Through the scheme of the embodiment, data extraction is completed quickly, the calculated amount is reduced, and the comparison accuracy is improved.

The invention belongs to the marine satellite technology field, especially relates to a marine satellite ground station climate monitoring system comprising a main control module, a sensor module, and an alarming device driving module. The main control module comprises a chip U1, a triode Q2, and a triode Q3. The pin 2 of the chip U1 is connected with the base electrode of the triode Q2, and the sensor module comprises a chip U2, the pin 1 of which is connected with a sensor J1. The emitter electrode of the triode Q1 is grounded. The alarming device driving module comprises an amplifier U2, and the pin 1 of the alarming device J1 is connected with the pin 1 of the amplifier U3. The other end of the motor M1 is connected with one end of the capacitor C1, and is grounded, and the pin 2 of the amplifier U3 is connected with one end of the resistor R2, and is connected with the pin 15 of the chip U1, and the other end of the resistor R1 is connected with the pin 17 of the chip U1.

The invention discloses a network furniture management system based on 5G big data, and particularly relates to the field of network furniture management systems.The network furniture management system comprises a main control computer and a network communication module, the main control computer is connected with the network communication module, and the output end of the network communication module is connected with a signal receiving module; the output end of the signal receiving module is connected with a control system, the output end of the control system is connected with a state monitoring module, the output end of the state monitoring module is connected to a main control computer, the output end of the network communication module is connected with a cloud voice control module,and the output end of the cloud voice control module is connected with a mobile terminal. The output end of the mobile terminal is connected with a network communication module, and the cloud voice control module receives a control voice command and sends the control voice command to the network communication module or the mobile terminal. According to the invention, through wireless connection orremote operation of the mobile terminal, the problems in the background technology are solved.

The present invention relates to a big data information collection system, which includes a first database for storing data collected from external data to the first database through a first transmission channel at a transmission speed of V10; a collection module, connected with the first The database is connected through the second transmission channel, in order to screen the data matched with the key character string from the first database according to the input key character string, and the collection module includes the establishment unit and the screening unit, and the establishment unit should establish the second transmission channel, filter The unit is used to transmit the data screened from the first database to the collection module through the second transmission channel at a second transmission speed V20; the central control module is connected to the first database, the collection module and the display module respectively. By adjusting the first transmission speed and the second transmission speed, the transmission speed can be matched according to the data transmission volume during post-transmission storage and data screening, so as to realize efficient data transmission and improve data collection efficiency.