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 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 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 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 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 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 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 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 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 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.