74results about How to "Occupies less hardware resources" patented technology

The invention discloses an APF (Active Power Filter) parallel system. The APF parallel system comprises a plurality of APFs connected with a power grid, and a detection control unit. High-voltage ends of direct current support capacitors of all the APFs are commonly connected, and low-voltage ends of the direct current support capacitors of all the APFs are commonly connected. The parallel system provided by the invention only needs a set of detection control equipment to control the plurality of APFs, thus, less hardware resource is occupied. Simultaneously, the invention further discloses a control method of the APF parallel system. The control method comprises the following steps of: (1) obtaining state information of the power grid, the loads and the parallel system; (2) extracting a current instruction from the load current; (3) calculating a current error signal; (4) performing repetitive control and PI (proportional integral) regulation on the current error signal to obtain a modulation signal; (5) forming a PWM (Pulse-Width Modulation) signal. The method provided by the invention has higher reactive compensation precision and harmonic suppression capability, and can effectively suppress system circulating current.

The invention discloses an all-digital logarithm automatic gain control device and a method thereof. A phase shifter extracts an equidirectional branch data I and a quadrature branch data Q of instantaneous outcoming signal, then a power detector obtains the power of outcoming signal, a logarithmic converter performs the linearizing process to the outcoming signal, compares the results with a system preset parameter b to form an error signal, finally an integrator removes the high-frequency component, an index converter performs the reverse-linearizing process to the error signal, a controllable gain amplifier forms a feedback loop. When the outcoming signal power is larger than the preset value,the gain of the controllable gain amplifier is reduced, and when the outcoming signal power is smaller than the preset value,t he gain of the controllable gain amplifier is enhanced, therefore outputting the digit signal with constant power. The invention avoids the limiting amplitude distortion, considerably reduces the complexity of back-end digital signal processing, enhances the anti-interference and stability of the system and effectively reduces the consumption of hardware system resources.

The invention relates to a color domain mapping real-time processing method and a real-time processing circuit, wherein the processing method comprises: (1) separately storing the representing color data to four groups of searching table memories; (2) inputting to-be-rectified original color data, selecting four grid points in the original color space in accordance with the original color data, and decoding for acquiring the memory addresses of the four grid points; (3) finding the representing rectified color data of the four grid points in accordance with the memory addresses; and (4) carrying out interpolation calculations by using the algorithm of tetrahedron interpolating in accordance with the representing rectified color data of the four grid points and the input to-be-rectified original color data, so as to acquire the final rectified color data. The processing circuit comprises an address decoder, four groups of searching table memories and an interpolation circuit. In comparison with prior art, the invention combines the color mapping searching table with the tetrahedron interpolation algorithm, saves hardware resource, increases work efficiency, and thus effectively increases calculation speed.

The invention discloses a real-scene image processing method and server based on location information and time periods. The method comprises steps as follows: a real-scene image of a target object is shot, geographical location information of a shooting place is acquired, the geographical location information is firstly sent to the server, if a user inquires that an initialized data base associated with the geographical location information exists in the server, the real-scene image of the target object is sent to the server, then whether a preset image matched with the real-scene image exists in the initialized data base is recognized, if the preset image exists, a preset model associated with the preset image is selected from the initialized data base according to the time period of the current time, the selected preset model is overlaid on the real-scene image, and a final processed real-scene image is obtained. According to the method and the server, the information feedback speed is high, and small hardware resources are occupied; the preset model is enabled to reappear in the real-scene image realistically, and the preset models overlaid in different time periods are different, so that the use experience of the user is better.

The invention relates to a curing and loading method of embedded software guiding the separation from a target. The method comprises the following steps of dividing a storage space of a volatile memory into three storage spaces; guiding and loading a program, configuring the information, and respectively curing the loaded programs into the three storage spaces; extracting value from a first storage space by a processor to execute the minimum system initialization; reading and analyzing the configuration information from a second storage space by guiding and loading the program; judging the quantity of the loaded programs according to the analysis result, entering do-nothing operation cycle if the quantity of the loaded program is zero, and otherwise sequentially loading each loaded program; judging whether the loaded program needs to be executed in priority or not according to the configuration information after the loaded programs are loaded, skipping to an inlet address of the loaded program to execute the loaded program if the loaded program needs to be executed in priority, and otherwise entering the do-nothing operation cycle. By adopting the method, the loading problem of multiple target files in a deep embedded application of a limit resource can be solved; moreover, the transplantation is likely to realize.

The invention discloses an Ethernet controller based network port extension method. A multipath Ethernet physical layer and a network extension module are included. The Ethernet controller based network port extension method comprises the steps of receiving a data message from a host port and applying the message to each forwarding logic in a parallel mode by the network extension module; selecting a forwarding target port by utilizing a source MAC address; enabling selected port signal TX-EN to realize data forwarding; by a receiving logic of each extended network port, buffering the received message through a receiving DMA and adding a network port number after a message data segment and forwarding the processed message to a host through a main port sending logic related to the receiving DMA; and finally, realizing binding of a physical port and a logic device in a protocol stack by a host network reception driving program. The Ethernet controller based network port extension method provided by the invention realizes extension of multiple independent ports on basis of an original network port of an MCU; simple upgrade is only required for the original network driving program; very low hardware resource expense is occupied; and the Ethernet controller based network port extension method is simple, and easy to implement.

The invention discloses a multi-lattice special effect rendering method and system based on a mobile terminal platform, and relates to the technical field of special effect rendering of a mobile terminal platform (iOS / Android / WP). The method and system aim to achieve the effects that a plurality of display lattices are arranged on a screen, each display lattice displays effects of current scenes in real time after the current scenes are rendered through a certain special effect filter, and accordingly users can simultaneously and visually see the effects of the current pre-shot scenes after being rendered through different special effect filters. The method and the system are characterized in that a display area is divided into multiple lattices, position information of each display lattice is determined, and accordingly special effects corresponding to the display lattices are determined; current preview frames shot by a camera are obtained, and texture data are created on the basis of the current preview frames; the texture data are rendered by means of special effect rendering actions corresponding to the display lattices, and rendering results are displayed in the corresponding display lattices.

The invention discloses a live action image processing method and server based on location information. The method includes the steps that a live action image of a target is shot, geographical location information of a shooting spot is acquired, the geographical location information is sent to the server, whether a preset database associated with the geographical location information exists in the server or not is queried, if the preset database exists, the live action image of the target is sent to the server, whether a preset image matched with the live action image exists in the preset database or not is recognized, if the preset image exists, a preset model, associated with the preset image, in the preset database is superposed on the live action image, and the finally-processed live action image is obtained. The speed of information feedback is high, fewer hardware resources are occupied, the preset model vividly reappears in the live action image, and the use experience of a user is better.

The invention provides a digital correction method for IQ channel mismatch of a novel broadband receiver. The digital correction method for the IQ channel mismatch is proposed by fully utilizing the magnitude-frequency characteristic of an IQ digital signal on the basis of narrowband signal correction. An orthogonal error exists in zero intermediate frequency modulation, and a generated residual mirror image and a carrier leakage signal can generate in-band interference, thus reducing the signal-to-noise ratio of a modulation signal and scattering constellation points. The IQ correction closed loop method that has non-ideal characteristics and is easy to implement provided by the invention provides a basic method and a specific operation. The method has the advantages of simple algorithm, little hardware resource occupation, strong portability, simple and convenient subsequent maintenance and so on. By adopting the method, the mirror image and the power of the carrier leakage of the signal on the frequency spectrum can be reduced, the amplitude-phase error within the entire working bandwidth is effectively corrected, the dynamic range of a wireless communication device is expanded, the requirements of a broadband wireless communication system are satisfied, and the signal-to-noise ratio of the modulation signal is increased.

The invention relates to a capacitive sensing touch control key. The capacitive sensing touch control key includes a micro-control unit provided with a timer, and the micro-control unit includes a GPIO port and also includes a capacitor and a pull-up resistor; one end of the pull-up resistor is connected with the GPIO port, and the other end is connected with a high level; one end of the capacitor is connected with the GPIO port, and the other end is connected to the ground; and a common point of connection of the pull-up resistor, the capacitor and the GPIO port is connected with a capacitor key. The invention provides a capacitive sensing touch control circuit which occupies few hardware resources, has a strong anti-interference capability, and is convenient to control, relatively low in power consumption and relatively low in cost.

The invention provides an implementation method and device for a multi-elliptic-curve scalar multiplier and a storage medium. The method can be compatible with two types of elliptic curves of secp 256r1 and Curve25519 at the same time; the fixed base point G is independently considered; different point addition control and multiple point control are called according to a curve and an algorithm; all scalar multiplication and modular arithmetic units are completed by using the arithmetic unit to complete corresponding operation, and intermediate calculation results are also stored in the register file, so that less hardware resources are occupied; corresponding algorithm operation is carried out according to different curve forms and function operation requirements, the hardware requirementarea is reduced, the operation speed is increased, and the problems that in the prior art, a scalar multiplier cannot be compatible with multiple types of curves, the operation speed is low, and the algorithm universality is not considered in special conditions are solved.

The invention discloses a method for automatically positioning the coordinate of the scene in a real-time video. The method comprises the steps that S1, PTZ (pan / tilt / zoom) parameters are acquired; S2, the coordinate of a video displaying area is determined, the scene needing to be acquired serves as a reference substance and manually calibrated, and the coordinate of the reference substance is acquired; S3, the step A and the step B are conducted simultaneously according to the acquired PTZ parameters, in specific, A, the matching relation of PTZ operation conducted on a ballhead camera or aPTZ camera and the scene coordinate in the screen is calculated, and the scene coordinate in the screen video is determined, marked and stored; and B, the matching relation of PTZ operation conductedon the ballhead camera or the PTZ camera and the screen coordinate is calculated, and the real-time video displaying area in the screen is determined; and S4, the scene coordinate in the screen videois marked and displayed. The method achieves the video structuralizing of the scene position I the real-time video; is convenient for conducting rapid searching on the scene position in massive videos; and only conducts processing on the coordinate data, occupies less hardware sources, is convenient for processing of massive videos, is not affected by the image quality and the light conditions, and the precision is high.

The invention provides a vulnerability identification technology-based plugin safety scanning device. The device comprises a vulnerability analysis module, wherein the vulnerability analysis module is connected with a vulnerability storage module; a contrastive analysis module is connected with the vulnerability analysis module, the vulnerability storage module, a plugin reading module and a prompt module; and the vulnerability analysis module is used for carrying out search and analysis through stored plugin vulnerability information after obtaining plugin information, and carrying out safety vulnerability analysis through the vulnerability analysis module and prompting the user when a corresponding plugin and plugin vulnerability information are not stored. The invention furthermore provides a scanning method. Through using the technical scheme, the occupied hardware resources are less and the use is convenient; and meanwhile, along with the continuous increase of the quantity of scanning URLs, more diversified data can be acquired, and the vulnerability type and plugin information of a safety vulnerability library can be enriched to form more comprehensive plugin vulnerability information, so that the plugin vulnerability scanning in the using process of the vulnerability identification technology-based plugin safety scanning device and the scanning method is more and more accurate, and the user experience is improved at the same time.

The invention belongs to the technical field of artificial intelligence, in particular to an integrated circuit acceleration method and system based on a self-adaptive piecewise linear approximation curve. The integrated circuit acceleration method comprises the steps: determining a linear equation correlation coefficient corresponding to input curve activation data through a table lookup method,forming an approximation straight line corresponding to the curve activation data through a linear equation correlation coefficient; and forming a piecewise linear approximation curve of a curve activation function through fitting of an approximation straight line. The integrated circuit acceleration method solves the problems that in the prior art, an existing artificial intelligence algorithm islow in curve activation function calculation speed and low in calculation result precision, and has the beneficial technical effects of being high in curve calculation speed, high in calculation result precision, small in occupied hardware resource, good in operation real-time performance and suitable for any curves.

The invention discloses anti-deception-jamming design based on a multipoint correlation method for satellite navigation. A code tracking loop in a signal tracking loop is adopted to track multipoint signals, a sliding correlator whose signal is N chips ahead of a normal signal is arranged at a chip stripping stage of the signal tracking loop, whether a signal in the current tracking channel is a deception signal is judged by judging the energy peak value of the sliding correlator, the signal is rejected if the signal is the deception signal, and locking and tracking of a true signal are restored. When applied to satellite navigation systems, the method can realize rapid detection, judgment and rejection of deception-jamming signals, is low in design complexity, occupies few hardware resources and can be widely applied to the satellite navigation system of various platforms to realize rapid and high-performance anti-deception-jamming performance, and logic reliability is improved.

The invention belongs to the technical field of a power distribution network of an electric power system, and specifically relates to a multi-dimensional nine-area optimal control strategy analysis method based on a power distribution network system. The multi-dimensional nine-area optimal control strategy analysis method based on a power distribution network system applies a reactive compensationcontrol device of the power distribution network system to reactive regulation of the power distribution network system, and fully considers the practical load operation curve peak and valley maximums, wherein time division and the like of each load section changes due to seasonal, holiday and working day differences and other factors, so that setting of the time is synchronized with the change of each load segment. In the multi-dimensional nine-area optimal control strategy analysis method based on the power distribution network system, the power distribution network system includes a controller, control switches and capacitors, wherein one end of the each control switch is connected to the corresponding capacitor, and the other end of the control switch is connected to a power supply and is provided with an electric quantity acquisition device; and the electric quantity acquisition device is connected to the controller, and then a control port of the controller is connected to a switching port of the each control switch. The multi-dimensional nine-area optimal control strategy analysis method based the power distribution network system can realize comprehensive analysis and regulation of the power distribution network, can improve the stability of the system and the power supply quality of power consumers, and also can improve the grid voltage quality, reduce the network loss and reduce the labor intensity of dispatchers.

The invention provides a multi-path high-speed wideband signal analog phase modulation method, which aims at providing an analog phase modulation method with few consumed hardware resources and a variable signal rate. According to the technical scheme, in the multi-path high-speed wideband signal analog phase modulation, a computer controls a programmable gate array chip (FPGA) through a 422 serial port to generate high-speed data for multipath high-speed wideband rate continuously-variable digital signals or spreading modulation signals, the FPGA outputs each path of digital signals to one input end of a vector multiplier, multipath analog modulation signals are inputted to the other input end of the vector multiplier, and the vector multiplier multiplies the above high-speed data and the analog modulation signals to complete two-phase phase modulation and multipath signal code division multiple access modulation; and N paths of inputted modulated carrier signals pass through N paths of vector multipliers to output N paths of analog modulation signals, the analog modulation signals after multipath two-phase modulation are combined into one path of high-speed wideband analog modulation signals via a combiner to be outputted.

The invention discloses a parallel implementation method of a real-time Gaussian white noise hardware generator. By the parallel implementation method, the Gaussian white noise hardware generator can generate high-speed and parallel high-quality Gaussian white noise in real time, at high speed and in parallel. According to the parallel implementation method, first, through high-speed parallel FPGA (field programmable gate array) implementation of uniform white noise based on a cellular automata theory, a method for calculating N-th initial vectors required by parallel implementation as well as a recursive function relationship of a cellular automata parallel generation algorithm are given; then, a low-complexity approach method based on a Box_Muller algorithm is given, the Box_Muller algorithm is simplified into simple multiplication and addition and CORDIC operation, and during FPGA implementation, a small number of multipliers and a small quantity of logical resources are needed, so that in case of relatively low consumption of the FPGA resources, long-cycle, large-bandwidth and good-quality Gaussian white noise can be generated in real time and at high speed.

The invention discloses a parallel implementation method of real-time phase noise hardware generators. By the adoption of the method, real-time, high-speed and parallel phase noise simulation can be achieved at an FPGA processor. According to the method, firstly, on the basis of the FPGA high-speed and parallel implementation method of uniform white noise of a cellular automaton theory, a calculation method of N-way initialization vectors needed by the parallel implementation and a recurrence function relation of the parallel generating algorithm of the cellular automaton are given; then, on the basis of real-time parallel generation of white noise, parallel first-order IIR filter banks are designed, and by setting a gain value at a corner frequency, noise output which meets features of a power law spectrum is achieved by filtering; finally, an equivalent form of the phase noise is obtained from the white noise, and is superposed with effective signals to complete the phase noise simulation. Under the condition of low FPGA source consumption, the method rapidly generates white noise which is long in cycle, large in band width and good in quality in real time, and on this basis, a parameter-controllable phase-noise simulation hardware generator is achieved.

The invention provides a radar digital pulse compression direct current removing method based on an FPGA. The method comprises the following steps of in an input sequence sig, synchronously inputtingan all 1 sequence Ones with a length which is the same with that of an input sequence; carrying out FFT operation on the input sequence and the all 1 sequence simultaneously; carrying out an operationof accumulating and calculating a mean value on the input sequence simultaneously; and multiplying the mean value result of the input sequence by the FFT result of the all 1 sequence and then subtracting the FFT result of the input sequence sig, and then acquiring a direct current component removing result. In the invention, 1 bit input is only needed and occupied memories are less; extra delay is not introduced, occupied hardware resources are less and operation efficiency can be effectively guaranteed; and through reasonably selecting a realization method, the calculating speed of pulse compression, hardware resource occupation and other performance indexes can be optimal, and the method can be widely applied to modern radar signal processing.

The invention discloses a dual-backup self-repairing configuration memory based on a shift register and a self-repairing method thereof. The circuit design of the configuration memory is applied to adistributed cell array structure digital circuit. The configuration memory circuit mainly comprises two shift register groups (SR0 and SR1), a cell register (CR) and corresponding control switches, and is controlled by a control module in a cell to send a signal. SR0 and SR1 respectively back up the configuration data of the left cell and the current cell, and the CR stores the configuration dataof the work of the current cell. The configuration memory transmits configuration data in a parallel shift mode, detects configuration data faults through parity check, and repairs the faults througha dynamic reconfiguration mode.

The SoC chip internal data grading protection circuit disclosed by the invention is simple in circuit, low in resource consumption, safe and reliable. According to the technical scheme, a pre-stage control circuit generates an on-off signal by using an input control signal and a selection signal to control the output and on-off of a post-stage circuit; a D trigger of a pre-stage control circuit is connected with a data selector through a feedback line, the data selector selects one path of data as an input signal of an AND gate, a gating signal is sent to an AND gate circuit, the D trigger is conducted, a pulse triggering latch is used for realizing edge triggering of an output clock to a CLK-Q path delay signal s2, a first preceding-stage AND gate circuit parallel loop is connected with a second post-stage AND gate circuit to form a priority control circuit; and reading and writing of internal data of the SoC chip are controlled based on the ARMv7 debugging architecture. In a default state, the post-stage circuit performs immersion type or non-immersion type debugging on the external circuit; and the internal data of the SoC chip are protected in a grading manner.

Provided is a method for eliminating same frequency interference of a digital TV receiver. The method is characterized by comprising the follow steps: step 1, detecting and determining a same frequency interference signal; step 2, moving and filtering the same frequency interference signal; and step 3, restoring power of the signal which is removed with same frequency interference to an initial value. The method for eliminating same frequency interference of a digital TV receiver effectively reduces same frequency interference of a simulated same frequency signal on the digital receiver, and signal distortion factor is greatly reduced, and the method occupies little hardware resource and is low in power consumption. The method is suitable for large-scale popularization and application.

The invention discloses a calculation method based on a CORDIC core for beam-control codes in a sinusoidal space. The calculation method adopts the CORDIC IP core to complete computation of a trigonometric function, transforms the trigonometric function into a sinusoidal space domain, computes the beam-control codes in the sinusoidal space domain, and combines multi-channel parallel computation to realize simultaneous phase matching of multiple channels, thereby realizing fast beam control, enhancing transportability, improving beam pointing precision and saving hardware resources.

The invention discloses a length exposure wide dynamic eclosion fusion method based on gauss filtering, and the method comprises the steps of 1 extracting a high light area in a long exposure image by adjusting an operator in a brightness area; 2 averaging the result obtained from step 1 and conducting binary processing by using the average value to obtain a binary mask comprising 0s and 1s; 3 conducting gauss filtering to the binary mask to get an eclosion effect and obtain an eclosion mask; extracting short exposure information and long exposure information; (4) multiplying the eclosion mask obtained from step 3 by a short exposure image; (5) taking the rest part of an eclosion mask image obtained from step 3 and multiplying it with a long exposure image; adding the result obtained from step 4; making data correction to the result obtained from step 5; and then outputting. <{EN2}>According to the invention, FPGA can be realized; the realization is simple; the occupied hardware resource is little; the fusion method fuses original pixel directly; and the real-time property is high.

The invention discloses a method for automatically positioning the coordinates of scenes in a real-time video fixed-trace inspection tour. The method comprises the following steps: S1, acquiring MSE parameters; S2, determining the coordinates of a video display area, using a scene to be acquired as a reference object, manually calibrating the scene so as to obtain the coordinates of the referenceobject, and recording travelling time; S3, simultaneously performing steps A and B according to the acquired MSE parameters: step A, calculating a matching relation between the moving MSE of inspection equipment and the coordinates of scenes in a video on a screen, determining the coordinates of scenes in the video on the screen, marking and storing the coordinates, and continuously updating the coordinates of the scenes so as to realize tracking display of the scenes; and step B, calculating a matching relation between the moving MSE of the inspection equipment and the coordinates of displayareas in the video on the screen, calling the operation time of the inspection equipment and determining the real-time video display areas of the screen; and S4, marking and displaying the coordinatesof scenes in the video on the screen. The method of the invention has the advantages of low occupation of hardware resources, convenience for processing of mass videos, no influence by image qualityand illumination conditions, and high accuracy.

The invention relates to the technical field of air quality detection, in particular to an air quality visual display method and an air quality visual display system. The method comprises the following steps: acquiring air quality data once at regular intervals through a server, and drawing a spatial distribution diagram of the air quality according to the acquired data; enabling the mobile terminal to request the server for obtaining the latest data time of the spatial distribution map, then request the server for a picture address within a certain period of time, download all the spatial distribution maps within the period of time, and then name and sort the spatial distribution maps; setting a visualization software system in the mobile terminal, the visualization software system beingprovided with a GIS map module, and the spatial distribution map can be displayed on the GIS map module; setting a time axis on a visual software system of the mobile terminal, and the time axis can be used for dragging and switching pictures or automatically playing the pictures. The condition and the change trend of the air quality can be visually seen, and a user can check the condition and thechange trend conveniently.

The invention discloses a blind channel estimation method and system based on channel coding assistance, and belongs to the field of communication signal processing. According to the invention, the hard decision bit information output by the decoder is iteratively fed back to the channel estimation module, and the hard decision bit information is used as the prior information of the sent data to replace the function of the original pilot symbol, so that the invention has the following main advantages: the pilot symbol does not need to be inserted at the sending end; therefore, the problem that the frequency spectrum utilization rate is reduced due to pilot symbol insertion is avoided, and the throughput of the OFDM system is remarkably improved; on the basis of a non-blind channel estimation method, the hard decision bit information is used as prior information for sending data to replace the function of an original pilot symbol, and blind channel estimation is realized, so that the method has estimation complexity and estimation precision which are similar to those of the non-blind channel estimation method, and bit error rate performance approximate to a theoretical limit can be achieved. The feedback loop is added on the basis of the OFDM receiver, and the OFDM receiver is simple in structure and easy to transplant.

The present invented method generates metastable state signal through stochastic signal generation circuit, random numbers obtaining circuit obtaining said metastable state signal and stabilizing said metastable state signal to obtain steady random signal, said random signal and outputting random numbers. Compared With current random number generation method, said invention provided device and method is applicable to resource limited embedded system, said indigenous random numbers are completely random number independent of random seed, indigenous random numbers capable of being used as random seed, combined using with software random numbers computation module further generating highly dense random numbers, thereby greatly raising software generative pseudo-random number sequence security. Furthermore, said invention provided generation of random numbers device does not occupy CPU resource, occupying very less hardware resource, with high generation speed only in several clock periods.

The invention discloses a data stream transmitting method comprising the steps of dividing every byte data holding time t into a bigit integral part X and a bigit decimal part Y, accumulating a numerical value of Y by an accumulator after one datum is sent out, and determining a clock interval of sending the next data according to the highest carry bit indentifier S accumulated by the accumulator. The invention also correspondingly discloses a data stream transmitting device. Through the invention, the decimal part can be maintained to control the data stream transmission when every byte data holding time is a nonnegative integer, thus the constant speed transmitting precision can be enhanced. Only one counter is needed in the invention, therefore, fewer resources on hardware are occupied.