100results about How to "High-speed computing" patented technology

Disclosed is a key generation apparatus which uses a finite commutative group defined by a number-theoretical (or arithmetical) function that can be substituted for the elliptic curve, thereby enabling the computational difficulty equivalent to that of breaking the elliptic curve cryptography. The key generation apparatus comprises a key setting part and a key generator. The key setting part sets a secret key α, and selects an element of the finite commutative group as a public key G. The key generator performs an addition operation defined for the finite commutative group on the public key G, thereby to multiply the public key G by the secret key α representing a scalar coefficient to generate a public key Y. The finite commutative group is a set of pairs (x,y) of a dependent variable y of a quadratic-hyperbolic function defined on a finite ring and an independent variable x of the quadratic-hyperbolic function.

The invention discloses a real-time stereoscopic vision implementation method based on FPGA. The implementation method operates in stereoscopic vision system which takes the FPGA as a core processing unit, has reasonable hardware structure, can meet the requirements of high-speed operation and high-seed transmission images, has multiple general interfaces and rich hardware resources, and can be further expanded and strengthened. Simultaneously a stereoscopic matching algorithm based on Census conversion is a non-parameterized matching method, is more robust for the conditions of non-uniform brightness, gain and the like, and improves the accuracy of the system. The invention adopts the reasonable hardware structure on the FPGA architecture, simultaneously implements a Census stereoscopic matching method by an ingenious logic design, and improves the accuracy and speed of stereoscopic vision implementation. Compared with the traditional method based on a general processor, the real-time stereoscopic vision implementation method utilizes parallel calculation and a reasonable production line design fully to map the algorithm on the structure, greatly improves the operating speed of the system, meets the requirements of high resolution, high accuracy and high speed and can be applicable to fields of autonomous vehicle navigation and the like.

The invention discloses a method, a device and a system for advertisement scheduling based on a mobile network. The method includes the steps that a request for an application program of a mobile terminal is received and comprises user information which comprises a mobile user directory number (MDN); user interest group data generated by historical access records of the mobile terminal are obtained; advertisements are matched according to the user information and the user interest group data to generate an alternative advertisement list sorted according to correlation; a target advertisement is screened out from the alternative advertisement list according to advertisement screening conditions; and the target advertisement is sent to the mobile terminal so as to enable the mobile terminal to display the target advertisement. Through application of the method, the device and the system, accurate scheduling of advertisements on a mobile advertisement platform can be achieved, and a purpose of accurate propelling movement is realized.

In an exclusive OR circuit (XOR gate) constituting an ECC circuit, the drivability of P channel MOS transistors is set larger than the drivability of N channel MOS transistors. Accordingly, the speed of the logic level of an output node being set to an H level from an L level identified as a reset state is increased than the case where the drivability is set equal. Thus, the time required to output a syndrome from a plurality of stages of XOR gates can be reduced to allow execution of error correction processing at high speed.

The invention discloses a method for establishing a public transit OD matrix, which is characterized by being based on a cloud computing platform. The method comprises the steps of screening out original public transit data, which conforms to predetermined OD matrix establishment requirements, from public transit data; carrying out preprocessing on the original public transit data in a concurrent mode according to data processing rules; extracting get-on information of each passenger according to the processed data, and analyzing a card swiping record of each passenger; if a bi-directional card swiping record exists, acquiring passenger get-off information of by using a method of estimating a passenger get-off station by analyzing passenger travel behavior rules to acquire the passenger get-off information; if the bi-directional card swiping record does not exist, acquiring the number of transferred people between stations by using a method of estimating the number of get-off people at a station by predicating the station heat degree; and establishing an OD matrix according to the get-on information and the get-off information of the passengers, the number of transferred people between stations and an OD matrix generation rule. The method disclosed by the invention can establish the OD matrix for multiple lines in real time. The invention further discloses a system for establishing the public transit OD matrix.

The invention discloses a global earthquake geomagnetic anomaly big data monitoring and early warning system and a monitoring and early warning method based on a mobile Internet. The system provided by the invention comprises a mobile terminal. The mobile terminal is in bidirectional connection with an intermediate layer. The intermediate layer is in bidirectional connection with a main control cloud end. The intermediate layer comprises a distributed cloud computation unit, a distributed mass storage unit, an automatic structured distribution unit and a data filtering unit. The main control cloud end comprises a comprehensive analysis unit, a decision-making unit and a management subsystem. The global earthquake geomagnetic anomaly big data monitoring and early warning method based on the mobile Internet is characterized in that the mobile Internet is used to collect data collected by an intelligent mobile phone or a tablet personal computer, the main control cloud end is used to analyze the data, and a magnetic field abnormal value is obtained and fed back to the intelligent mobile phone or the tablet personal computer for visually displaying a magnetic field abnormity distribution state. Through the analysis of the main control cloud end, a user is enabled to obtain data of great reference value.

In the present liquid crystal display device, an LED output value correction section (513) included in an area-active drive processing section (5) corrects LED data Dbl obtained by an LED output value calculation section (512) with reference to a luminance correction LUT (13), such that the luminance in the area from an intermediate value to near a maximum value shifts to a higher degree. Thus, even if the backlight luminance is low (typically, the mean luminance of an input image is low), contrast ratio is enhanced, thereby preventing a tone jump (insufficient luminance) at high tone levels due to an insufficient backlight luminance.

A scan imaging device for the water object includes the laser in the shell with the transparent window under the water, the laser shot device composed by the extender lens, the plano-concave cylinder lens and the holophote, the receiver in the shell with transparent window and the image processing unit in the water. The electropult and the receiver are separately in the same base plane. The emitting optical axis, the receiving optical axis of the adjusted receiver and the object center are in the same plane. It is loaded on the robot or the ship in the water by the diver and generates the standard image signal to get the clean image. So it can be used for the military and the scientific research.

The invention discloses a DSP (digital signal processor) based photovoltaic networking system bifurcation controller which is characterized by comprising a photovoltaic power generation system, an interface circuit and a DSP control unit; a working method of the system comprises the steps of signal acquisition, analog-to-digital conversion, bifurcation judgment, instruction issuing and on-off action. The system has the advantages that firstly, the control precision is high, and the stability is strong; secondly, by adding the time-lag feedback control, the bifurcation phenomenon generated by an electric device in the photovoltaic system controller can be solved better; thirdly, the control precision and the control effect are improved; and fourthly, the calculation speed is high, the structure is simple, and the control is easy.

The present invention provides an ambulance vehicle oxygen device intelligent monitoring system and a remote data obtaining method thereof. The system is in communication connection with a mobile terminal and an upper computer through a server, and comprises: a gas pressure collection module configured to collect pressure parameters of an oxygen bottle through a pressure sensor; a Beidou / GPS dual-mode location module configured to collect the information of the position where an ambulance is located at present; a GPRS wireless communication module configured to send the collected data to the mobile terminal; a configuration touch screen monitoring module configured to perform recording operation of the dynamic monitoring, the starting and stopping control and the historical data of the system; a master control module configured to receive collected data and location information and send control signals to other modules; and a dynamic real-time early warning module configured to complete corresponding electrical motion according to the electrical signals sent by the master control module. The system takes the vehicle oxygen device as a monitoring object based on the internet of things technology, employs a PLC to control the solenoid valve of the oxygen bottle and employs a GPRS communication network to realize the intelligent monitoring of the ambulance vehicle oxygen device so as to ensure the convenience and safety of oxygen supply of the ambulance.

The invention belongs to the technical field of non-volatile storage devices, and particularly relates to a novel storage cell capable of conducting high-speed calculation and high-capacity storage. The novel storage cell is formed by a bottom end electrode, an antiferromagnetic metal mixing layer, first ferromagnetic metal, first oxide, second ferromagnetic metal, first metal, second oxide, second metal and a top end electrode from bottom to top, a traditional ion beam epitaxy method, or a traditional atomic layer deposition method or a traditional magnetron sputtering method is adopted to plate each layer of matters of the storage cell on a substrate from bottom to top, and then a photoetching and etching traditional nanometer device machining process is used for conducting manufacturing. The novel storage cell is characterized by being formed by a storage cell body MIM of an OxRRAM and a storage cell body MTJ of an STT-RAM in an overlapped mode. The novel storage cell has the advantages of high-capacity storage and high-speed calculation, can be used for storage device hierarchical structure design, enables a data storage layer to be combined with a logic calculation storage layer, enables the capacity of the storage layers to be increased while high-speed calculation is kept, achieves non-volatile storage, and reduces power dissipation.

The hand-held device integrating computer and cell phone and a method for realizing the same. The hand-held device includes: a computer mode processing module; a cell phone mode processing module; a shared storing module connected both to the computer mode processing module and cell phone mode processing module; a shared processing module connected to all of the computer mode processing module, cell phone mode processing module and shared storing module for responding to the selection of the user and enabling the computer mode processing module or cell phone mode processing module; and a power supply module for supplying working power to the computer mode processing module, cell phone mode processing module, shared processing module or shared storing module. By this way, the computer and cell phone are combined together to form a hand-held terminal device capable of being received into a pocket.

The invention relates to the technical field of granularity measurement of a photon correlation spectroscopy and particularly relates to a photon correlator. The high-speed photon correlator with a large dynamic range comprises a photon correlator; the photon correlator comprises channels and the channels comprise a high-speed channel and a low-speed channel; the high-speed photon correlator further comprises an FPGA (Field Programmable Gate Array) chip circuit, a DSP (Digital Signal Processor) chip circuit and a computer; and the DSP chip circuit is respectively connected with the FPGA chip circuit and the computer. The FPGA chip circuit is used for computing the high-speed channel and the DSP chip circuit is used for computing the low-speed channel. According to the high-speed photon correlator with the large dynamic range disclosed by the invention, based on the structure combining the high-speed channel and the low-speed channel, fewer hardware resources are utilized, so that a dynamic range of the correlator is improved and the high-speed correlation computation is realized; and meanwhile, the cost of the correlator is reduced.

The invention discloses a closed loop dual-mode reduced-order model prediction control method for a Buck type DC-DC converter. A closed loop dual-mode reduced-order model prediction control algorithm is adopted; a closed loop feedback gain coefficient is introduced in a rolling optimization process so as to ensure the stability of the control system; meanwhile, the dual-mode structure is subjected to order reduction by adopting an SVD decomposition method, so that the overall calculation process is simplified twice in order to reduce the online calculated amount; and in addition, an off-set free idea is adopted in the algorithm implementation process, so that the output can stratify a set point value, and the control for the DC-DC converter is realized.

The invention discloses a DC-DC converter control method and system. A set value is fast reached through a single-step forecasting method by adopting forecasting function control to achieve the control of a DC-DC converter. The invention further provides a DC-DC converter control system. According to the DC-DC converter control method, large numbers of on-line rolling optimizing calculations needed by a model forecasting control algorithm itself are effectively reduced through the single-step forecasting method, and the set value is fast reached to achieve the control of the DC-DC converter.

The invention discloses a vision fusion method based on FPGA. The method comprises the step of establishing a vision system taking the FPGA as an operation processing core, wherein the left view and the right view of a stereo camera are input through a SERDES interface; the system comprises six external SRAMs in 1024*8 bit capacity, wherein each two SRAMs form a group of ping-pong buffer, therebyrealizing seamless transmission and pipelined processing of the left and right views and the parallax image. The requirements on high-speed operation and high-speed image transmission can be satisfied, multiple general interfaces and a surplus hardware resource are provided, thereby further extending and enhancing. And meanwhile, the Census stereo fusion is the non-parametric fusion method and ismore robust to the non-uniform brightness and gain and like conditions, and the system precision is improved. Compared with the traditional general processor, the parallel computing and the reasonablepipeline design are sufficiently utilized, the algorithm is directly mapped to the structure, the system operation speed is greatly improved, and the requirements on high resolution, high precision and high speed are satisfied.

A motion-vector computation apparatus includes: a motion-vector correction section configured to correct a referenced motion vector to be used in a process to compute a motion vector of a second macro block pair so as to make the referenced motion vector compatible with a specific structure; a motion-vector holding section configured to store the referenced motion vector corrected to a motion vector compatible with the specific structure at an address determined in accordance with the structure of a first macro block pair; and a motion-vector computation section configured to read out the referenced motion vector from the motion-vector holding section in accordance with the structure of the second macro block pair and compute a motion vector of the second macro block pair on the basis of the referenced motion vector read out from the motion-vector holding section.

The invention relates to a system for judging small-disturbance stability of a grid-connected photovoltaic system on basis of an FPGA (Field Programmable Gate Array), which is characterized by comprising a photovoltaic array, a Boost DC (Direct Current) conversion unit, a DC / AC (Direct Current / Alternating Current) conversion unit, a filtering unit, an interface circuit, a display unit and a central processing unit. A working method of the system comprises the steps of voltage and current signal acquisition, detection, calculation and display. The system has the advantages that 1, accuracy is high and universality is strong; 2, a small amount of variables are required and the system is easy to implement; and 3, hardware adopts the high-performance XC4VSX35-type FPGA, high-speed computation can be carried out and an accurate computing result is provided.

The invention provides an intelligent video content server deployment method and system; the method comprises the following steps: obtaining network topology information; encoding evolution algorithmchromosomes according to the network topology information, wherein each chromosome array represents a feasible solution; forming a multi-source multi-sink network topology model according to the feasible solutions, and using same as an initial server deployment solution; converting the multi-source multi-sink network topology model into a single-source single-sink network topology model; using a minimum cost maximum flow algorithm to determine an adaption value of each network topology model in the evolution algorithm; using the evolution algorithm to carry out multiple iterations, continuously evolving, keeping the individual with the minimum adaptation in each generation, and finally obtaining the video content server deployment optimum scheme. The method and system can intelligently deploy video content servers, thus ensuring user bandwidth demands, and minimizing the video content server deployment cost and bandwidth rental fee.

It is provided a content recommendation system comprising a unit of storing the related information of the content; a history with respect to the content; determination information indicating whether to validate processing of extracting the recommendation content, which uses the each piece of the related information; and an effective period from a last use date, in which the determination information indicates “valid”; a unit of extracting the last use date of the each piece of the related information from the operation history, and, the determination information of the each piece of the related information to indicate “invalid” if a number of days elapsed since the last use date exceeds the effective period; and a unit of extracting the recommendation content by using at least one of the each piece of the related information of the content having the determination information thereof set to indicate “valid” and the operation history.

The invention relates to an off-grid photovoltaic VRLAB (Valve Regulated Lead Acid Battery) energy storage control device and a working method thereof. The off-grid photovoltaic VRLAB energy storage control device comprises a photovoltaic array, a filtering unit, an energy management unit, a VRLAB unit, a DC / DC (Direct Current) converter, a DC / AC (Alternating Current) converter, a DC load and an AC load, wherein the photovoltaic array is unidirectionally connected with the DC / DC converter through the filtering unit, and is unidirectionally connected with the energy management unit, and the energy management unit is bidirectionally connected with the VRLAB unit; the VRLAB unit is bidirectionally connected with the output end of the DC / DC converter, and the output end of the DC / DC converter is unidirectionally connected with the DC load and is unidirectionally connected with the AC load through the DC / AC converter. The off-grid photovoltaic VRLAB energy storage control device provided by the invention has the beneficial effects of effectively improving the power generation efficiency of a small off-grid photovoltaic system, improving charging and discharging efficiency and prolonging the life of an energy storage device by taking VRLAB grouping switch operation and combined charging and discharging control strategies, and having simple structure of external equipment, mature and stable technology, and easiness in implementation and control.

A coordinate system R is set in which P0 is a coordinate origin, P0P1 conforms to a first U axis to have a unit length, P0P2 conforms to a second V axis to have a unit length, and P0P1×P0P2 is a unit vector conforming to a third N axis. A transforming matrix M that transforms an ordinary coordinate system into the coordinate system R and the u-, v- and n-coordinate values of the both ends of the line segment are calculated. It is determined whether or not the line segment intersects with the triangle, on the basis of the u-, v- and n-coordinate values. The u-, and v-coordinate values of the intersection point are calculated. It is determined whether or not the intersection point is positioned inside the triangle, on the basis of the u-, and v-coordinate values of the intersection point.

It is an objective of the present invention to provide a printing apparatus, a printing system, and a prediction method of the usage of a printing agent that can be configured to predict, prior to a processing for developing a printing image, the usage of a printing agent required for the printing. In order to do so, layout information is firstly analyzed prior to a processing for developing a printing image, thereby calculating an area in which object information arranged based on the layout information is printed. Then, based on the calculated printing area, the usage of the printing agent required for printing the object information is predicted.

[Problem] To generate an image that more accurately renders the 3D shape of a predetermined subject when generating an artificial 3D image by means of volume rendering. [Solution] When generating an artificial 3D image by means of volume rendering using an opacity curve defining the relationship between pixel values and opacity in a 3D image, the entire region representing the predetermined subject from the 3D image is specified, a base opacity curve is set for the specified entire region, for each of at least a subset of pixels within the specified entire region, a representative value of the pixel values within the region proximal to the relevant pixel is acquired, and an opacity curve resulting from imparting a change to the set base opacity curve using the acquired representative values is set as the opacity curve applied to the relevant pixel in volume rendering.

The invention discloses a 360-degree staring type intelligent bird repeller based on an ultra-wide-angle lens and a calibration method of the 360-degree staring type intelligent bird repeller, the 360-degree staring type intelligent bird repeller comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through a transparent cover shell, and the top of the upper shell is fixedly connected with the ultra-wide-angle fisheye lens. The invention relates to the bird dispeller field. According to the 360-degree staring type intelligent bird repeller basedon the ultra-wide-angle lens and the calibration method of the 360-degree staring type intelligent bird repeller, through cooperation of the motor, the driving gear and the rotating fluted disc, 360-degree non-stop rapid rotation of the reflector can be achieved, and by inputting currents of different values into the electromagnetic coil, the iron core can generate magnetic force of different magnitudes; the sheet spring drives the reflector to deflect to different angles by matching with the permanent magnet, so that the laser can be reflected to different angles on the longitudinal plane, the laser projection area is greatly increased by matching the sheet spring and the reflector, the function of continuously looking around in a specified airspace can be realized, the steering is rapid,and a hardware basis is provided for rapid tracking.

The method includes steps: first, the provided substrate can at least be divided into region of high voltage circuit and region of low voltage circuit; next, forming first dielectric layer on substrate, and the first dielectric layer is in use for grid dielectric layer in region of high voltage circuit; then, forming mask layer on the first dielectric layer, patterning the mask layer, the first dielectric layer, and the substrate in order to form groove in the substrate; forming insulating layer on the substrate to fill in the groove; removing the mask layer, and partial insulating layer to expose surface of the first dielectric layer; removing the first dielectric layer in region of low voltage circuit to expose surface of the substrate; forming second dielectric layer in substrate of the region of low voltage circuit' the thickness of the second dielectric layer is smaller than the first dielectric layer.

The invention provides a control device, a machine tool and a control method. The control device is capable of controlling a main shaft for the assembling of a tool to move or a workpiece holding part for holding a workpiece to move. The control device sets a machining path based on instruction points of positions of a plurality of indication shafts and further control the main shaft to move based on the machining path. The control device sets an evaluation section crossed with the machining path and then carries out operation to obtain the intersection point between the set evaluation section and the machining path. The position of the intersection point is corrected, and the positions of the instruction points in the direction crossed with the machining path are corrected based on the corrected intersection point. The control device is capalbe of correcting the instruction position in the direction crossed with the machining path, so that a smooth curved surface is formed on the workpiece.