273results about How to "Achieve smooth transition" patented technology

The invention relates to a self-adaptive code rate controlling method with low complexity. The controlling method comprises two types of operating modes, namely, variable code rate and fixed code rate; wherein the variable code rate is usually used on non-real time application occasions requiring constant image quality, and the fixed code rate is usually used on real time application occasions requiring constant bandwidth; the method can self-adaptively adjust the quantization step size according to different application occasions and the characteristics of video sources, to achieve reasonable distribution of code rates; simultaneously, variation range limitation on the quantization step size is added, thereby quality jump among continuous images is effectively prevented, smooth transition is realized, and the realization of hardware is convenient.

The invention relates to a frequency spectrum sharing method for a GSM (Global System for Mobile Communication) system and an LTE (Long Term Evolution) system. The method is realized by following steps: a fixed channel of the LTE system of a cell is dodged when distributing GSM system frequency points of the cell and an adjacent cell capable of generating interference to the cell; frequency domain resources which are indicated by PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel) of the LTE system and distributed to users, and GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell are not on a same frequency resource; and when the GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell are distributed for the PCFICH (Physical Control Format Indicator Channel) and PHICH (Physical Hybrid Indicator Channel) of the LTE system, two channels on the LTE system are dodged, or the LTE system distributes proper CellID to dodge the GSM system frequency points of the cell and the adjacent cell capable of generating interference to the cell. The invention also provides a shared frequency spectrum system. By the method and the system of the invention, the frequency spectrum use efficiency can be improved, and simultaneously the GSM system can be transitioned to the LTE system in a smoothing manner.

The invention belongs to the field of cogged ingot continuous casting production and especially relates to a gradient curvature raised roller of a tension leveler for cogged ingot continuous casting and a use method. The gradient curvature raised roller of the tension leveler provided by the invention is composed of a roller shaft and a roller body, wherein the roller body is composed of an edge area, a gradient curvature area and a flat roller area; the gradient curvature area is composed of an arcing area and an arc-varying area; the arc curvature between an arcing point and an arc-varying point of the arcing area is gradually increased; the arc curvature between the arc-varying point and an arc-ending point of the arc-varying area is gradually reduced; the flat roller area is raised relative to the edge area. At least four tension levelers with the gradient curvature raised rollers are used for pressing a cogged ingot continuous casting slab; during the pressing process, the average temperature of the surface of the continuous casting slab is controlled at above or equal to 800 DEG C and the temperature difference of surface center and corner is at below or equal to 150 DEG C; lastly, the continuous casting slab with improved central segregation and loosening is acquired. The smooth transition between the flat roller area and the raised roller area is realized by the gradient curvature raised roller provided by the invention and the crack defect caused by the stress concentration of the transition area is effectively avoided.

The invention discloses microgrid coordination control system and method based on state transition. The microgrid coordination control system comprises a load measurement and control module, a power distribution network measurement and control module, a distributed power supply measurement and control module and an energy storage device measurement and control module which are respectively in bidirectional connection with a central controller through signal transmit-receive modules; all loads, power distribution networks, distributed power supplies and energy storage devices are connected with a microgrid bus through fling-cut switches (the distributed power supplies and the energy storage devices are provided with corresponding interfaces); all the measurement and control modules are in bidirectional connection with the corresponding fling-cut switches; one output of the distributed power supply measurement and control module is connected with a corresponding power electronic / rotary interface; the outputs of the energy storage device measurement and control module are connected with the power electronic interfaces of the energy storage devices; and the central controller sends operating instructions to all the measurement and control modules according to all acquired information, so as to achieve coordination control of all controlled elements. The system provided by the invention can meet the power quality requirement, has high reliability in power supply for sensitive loads, and achieves continuous supply to significant loads.

The invention relates to the field of time-triggered Ethernet. In order to realize the fact that the new-generation aerospace Ethernet bus (AEB) has the advantages of high speed, strong real-time performance, high reliability, safety and credibility, both high reliability of 1553 and low cost of the Ethernet are achieved, and the existing weapon aircraft and the like all adopt a 1553 scheme, a user can make no change for realizing smooth transition from 1553 to AEB, and while the cost is reduced, and the stability and the reliability can still be ensured, a communication method for aerospace Ethernet compatible with time-triggered Ethernet and 1553B is provided according to the technical scheme adopted by the invention. A time-triggered compatible protocol architecture is adopted to transmit three different priorities of data frames: command corresponding data, IT application data and time-triggered data, and the three frames all adopt a standard Ethernet frame format, type domain values are different due to packaging through different protocols. The method of the invention is mainly applied to Ethernet communication.

The invention discloses a method and a device for switching a video definition, which relate to the field of video playing and aim at solving the problem that the definition switching process influences the video playing fluency. The method comprises steps: during a process of playing a first video source, according to the current network condition, whether to switch the video definition is determined; if the video definition is switched, a second decoding library is built, and through the second decoding library, a second video source with the definition level corresponding to the current network speed is loaded; the second video source is played synchronously according to the playing schedule of the first video source on a newly-built canvas overlapped with the first video source canvas; within a preset time duration when the second video source is started to be played, transparency transition of the first video source canvas is converted to total transparency, and the transparency transition of the newly-built canvas is converted to total opaqueness; the sound of the first video source is switched to that of the second video source; and playing of the first video source is stopped. The method and the device are mainly applied to the process of switching the online video definition.

The invention relates to the field of robot trajectory planning, and provides a smooth transition method of multi-space trajectory planning of a teaching robot, aiming at solving the unsmooth problemin the trajectory switching process. The smooth transition method comprises the steps that a teaching program of the teaching robot is analyzed, the switching direction of the trajectory planning is judged, if the trajectory planning is that the switching direction is from cartesian space to joint space, a tail end of cartesian space trajectory planning is acquired, according to the requirements on a path and a velocity, a first posture and a first velocity at the tail end are acquired, first angular velocities of various joints are obtained by employing a jacobi matrix, and by taking an angleindicated by the first posture as a starting angle and the first angular velocities as starting velocities, joint space trajectory planning is carried out; or else, a starting point of the cartesianspace trajectory planning is acquired, a second posture at the starting point and second angular velocities of the various joints are obtained, and by taking an angle indicated by the second posture as a terminal angle and the second angular velocities as terminal velocities, the joint space trajectory planning is carried out. Smooth transition of the trajectory planning in space switching is realized.

Embodiments of the invention provide an image processing method and apparatus, and an electronic device, and relate to the technical field of image processing. The image processing method comprises the steps of obtaining a focusing position of a photo; calculating the foreground depth and background depth corresponding to the focusing position and a clear range of the imaging; obtaining the foreground, midground and background of the photo based on the clear range; and performing blurring processing on the foreground and background respectively according to the distance between each pixel in the foreground and the background and the midground, wherein in the foreground and the background, the blurring degree of the pixel closer to the midground is less than the blurring degree of pixels farther from the midground. By the use of the image processing method and apparatus and the electronic device, the implementation is easy and the blurring effect of the photo can be improved.

The invention relates to a method for realizing an electric auto-passing neutral section of a train by utilizing a power electronic switching device and belongs to the technical field of the manufacturing of the power electronic switching device. An existing modern power electronic technology, namely a high-power voltage current transducer control technology, is adopted to realize the complete equipment of power electronic switching device which is used as a 'phase-change switch for a ground auto-passing neutral section device', thereby optimizing an existing 'uninterrupted automatic electricphase-separating system for electrically dragged train', exactly realizing an uninterrupted automatic electric phase-separating function of an electrically dragged railway train and overcoming inherent defects of technical performance of an original system.

The invention relates to a novel software phaselock technique applicable to micro-grid master-slave control. In a master-slave control structure of a micro-grid, a micro-grid master control inverter tracks the phase of a power grid while in grid-connected operation; and when in isolated island operation, the micro-grid master control inverter needs to maintain the system frequency to be unchanged; to ensure that the phase and the frequency of a voltage do not change suddenly during the micro-grid mode switching process, the invention provides the novel software phaselock technique; when the connected grid is changed to the isolated island mode, the phase of the power grid is locked; and an output phase after the grid is disconnected transits from the power grid phase to the micro-grid phase gradually, and no phase jump happens; when the isolated island mode is changed to the connected grid, a phase difference of the power grid and the micro-grid is firstly calculated, and subsequently the PI modulation is carried out on the phase difference; the output is used as a frequency compensating signal to be overlapped with the frequency under the isolated island mode and to be used as frequency reference of an output voltage of the micro-grid main control inverter; and by changing the frequency, the phase of the micro-grid main control inverter is enabled to approach to the phase of the power grid slowly; and when the phase difference of the micro-grid main control inverter and the power grid is less than a set value (theta0), the grid connection operation is carried out.

The invention discloses a NURBS (Non-Uniform Rational B-Spline) curve adaptive interpolation control method based on a de Boor algorithm. An upper computer calculates an interpolation point and transfers the calculated coordinate value list to a lower computer; and the lower computer converts the coordinate value into corresponding pulse number and sends a pulse to a motor driver which controls a motor to rotate and drives a mechanical structure to act. The NURBS curve adaptive interpolation control method comprises the following steps: a parameter value in a curve definition domain is set to calculate a corresponding point p(u) on the B-spline curve; and a NURBS curve adaptive interpolation module based on the de Boor algorithm applies the de Boor algorithm to the NURBS curve interpolation by use of a recursion formula of the de Boor algorithm. The invention provides the NURBS curve adaptive interpolation control method based on the de Boor algorithm, which reduces the complexity and has good real-time performance and relatively high interpolation efficiency.

The invention relates to an identifying method and device for welding joints of corrugated plates of containers and a welding control system. The identifying method for the welding joints of the corrugated plates of containers includes steps of firstly, projecting at least one beam of surface lasers, and forming two channels of deflected laser lights arranged on two sides of the welding joints by each beam of surface layer at the welding joints; secondly, acquiring deflected laser light information generated by the surface layer by an industrial image sensor; thirdly, calculating the size and the position of the welding joints; fourthly, moving the surface laser along the welding joints to change the projection position of the surface laser on the welding joints, and repeating the first step to the second step. When the surface layer moves out of the welding joints, a discrete welding joint position coordinate curve of the welding joints and the size of the welding joint corresponding to each point on the curve are obtained. The identifying method and device can accurately identify the positions and the size of the welding joints, control accuracy of welding positions is improved, and welding quality is guaranteed.

The invention discloses a no-load control system of an original-side feedback AC-DC switching power supply. The no-load control system comprises a control chip, a transformer and an NMOS (N-channel Metal Oxide Semiconductor) tube, wherein the control chip is provided with a PWM (Pulse-Width Modulation) control and line compensation unit; one input end of the PWM control and line compensation unit is connected with an output voltage detecting and sampling unit, and another two inputs of the PWM control and line compensation unit are respectively connected with a feedback signal incoming pin FB and an original-side current detection signal incoming pin CS; and an output end of the PWM control and line compensation unit and a cycle-by-cycle current-limiting unit are respectively connected with an RS trigger through OR-logic. According to the no-load control system of the original-side feedback AC-DC switching power supply, the PWM control and line compensation unit generates a PWM control mode during medium-load and light-load, so that the original-side peak current in each period is lowered along with the lowering of the load and the system noise in light-load is favorably reduced; in addition, the line compensation is carried out on the lowest original-side peak value, so that the system has extremely low standby power consumption in a wide input voltage range; and the smooth transition between the PWM control mode and a PFM (Pulse Frequency Modulation) control mode is realized by the OR logic.

The invention relates to a method for controlling traffic signals, in particular to a transitional adjustment method for arterial traffic signal coordination control, and belongs to the technical field of arterial traffic signal coordination control. According to the technical scheme, the transitional adjustment method for the arterial traffic signal coordination control comprises the steps that the zero clock of the day is taken as the starting point of the coordination control scheme, and according to the remaining period time length, from the scheme switching time to beginning time of the next coordination period, of a road traffic signal machine, a period adjustment method in the coordination control transitional adjustment is given out; according to the period adjustment strategy in the coordination control transitional adjustment, distributing methods for time length of a green light in the period shortening and delaying processes are respectively given out, the time lengths of the green lights of all phases are obtained, and finally coordination control transitional schemes are formed. The method is convenient to operate, can achieve smooth transition of the coordination control scheme, and is wide in application range, safe and reliable.

The invention discloses a method for realizing automatic adjustment of a Gamma curve of a television through a computer, which is mainly characterized in that a user sets up picture quality indexes needing to be adjusted through a human-computer interface on the computer; meanwhile, the current practical Gamma data of the television is collected by the computer and is calculated through using a Gamma automatic adjustment algorithm; the calculated adjustment data is sent to a receiving end of the television; data information forwarded by the computer is timely received by the television through an RS232 interface and is decrypted; control contents of the computer, which mainly comprise red-green-blue (RGB) information of the Gamma curve, are responded according to contents of an information packet; and through repeated calculation and adjustment, the automatic adjustment of the Gamma curve of the television is finally realized. By adopting the method, the regulated Gamma curve has high transitivity, and has the characteristics of good adaptability, quick adjustment speed, high veracity and good safety.

The embodiment of the invention discloses a display panel and a display device. The display panel comprises first pixel areas and second pixel areas, wherein the first pixel areas and the second pixel areas are symmetrically arranged; the first pixel areas comprise a plurality of circulation units sequentially arranged in the first direction, each circulation unit comprises an initial pixel row, at least one middle pixel row and a terminal pixel row which are sequentially arranged in the first direction, the initial pixel rows and the terminal pixel rows are each composed of first pixel units, the first pixel units comprise n first sub-pixels, and the width of the first sub-pixels is first preset width b; the middle pixel rows are composed of second pixel units, each second pixel unit comprises n second sub-pixels, the width of the sub-pixels is second preset width d, d is not equal to b, and the width of the middle pixel rows in the second direction is larger than that of the initial pixel rows and smaller than that of the terminal pixel rows. By means of the display panel and the display device in the embodiment, the marginal sawtooth phenomenon of the display panel is improved, marginal smooth transition of the display panel is achieved, and the display effect of the display panel is improved.

The invention is suitable for the field of image processing, and provides a method and device for splicing a panoramic image and a portable terminal. The method includes obtaining a plurality of images used for splicing the panoramic image; unfolding the plurality of images into longitude and latitude images; extracting splicing areas among the plurality of longitude and latitude images to obtain a plurality of splicing areas, and projecting the plurality of splicing areas to a unit ball; extracting a cylindrical surface area corresponding to an area to be spliced on a unit ball surface, and calculating an optical flow field between left and right images of the area to be spliced; and fusing images of the splicing areas according to the optical flow field between the left and right images of the area to be spliced till the images of all the splicing areas are fused, thereby obtaining a panoramic image after seamless splicing. The method for splicing the panoramic image can realize smooth transition between fusion areas, thereby achieving an effect of seamless splicing.

This method includes steps of: (1) obtaining movement data specimen; (2) statistically analyzing the obtained reduction specimen movement data series (MDS) on the basis of functions to obtain the character movement; (3) depending on the user's control or application requirement to combine a new MDS; (4) after-processing the combined MDS. This method possesses a good currency, suits the application in games and the virtual realism roam to generate or control the interacting behavior of virtual roles. It also suits to form fast and vividly numerous virtual roles in moving picture edition and movie / video production.

The invention relates to variable working condition optimizing operation technologies of power station steam turbines, in particular to a turbine main steam pressure operation curve and an optimization method of the turbine main steam pressure operation curve. The approximate S-shaped main stream pressure operation curve is provided, and an original fixed-sliding-fixed main stream pressure operation mode is replaced. According to a turbine through-flow characteristic and a nozzle block physical structure, the smooth similar-S-shaped curved closer to an ideal optimal pressure operation curve is provided on the basis of the main stream pressure fixed-sliding-fixed operation curve, and the curve mainly comprises a high-load fixed pressure horizontal linear section, a low-load fixed pressure horizontal linear section, a middle-load sliding pressure inclined linear section and arc sections tangential to the sliding pressure inclined linear section, the high-load horizontal linear section and the low-load horizontal linear section. The main stream pressure operation curve similar to the S shape is determined by carrying out data mining on historical operation data, the original fixed-sliding-fixed main stream pressure operation curve is replaced, and unit pressure control is guided.

A real-time planning method of a moving coordinate system maneuvering target by a spacecraft comprises the steps of: performing conventional attitude maneuvering planning initialization calculation, and obtaining an initial quaternion and a maneuvering planning parameter of a target moving coordinate system relative to a satellite orbit system; performing real-time planning pre-calculation of theconventional attitude maneuvering planning according to the maneuvering planning parameter information in each control cycle, and obtaining a pre-calculation result; and finally, calculating an attitude quaternion of real-time planning relative to an inertial system and an angular speed of real-time planning relative to the inertial system according to a real-time direction cosine matrix of the target moving coordinate system relative to an orbit system and the angular speed of the target moving coordinate system relative to the inertial system in each control cycle in the maneuvering process,and completing the moving coordinate system maneuvering target real-time planning by the spacecraft.

The invention provides a method for achieving indoor and outdoor continuous positioning based on 5G active indoor distribution, and the method comprises the steps: building an active distribution system which comprises a baseband processing unit (BBU), an expansion unit (EU) and a radio remote unit (RU), wherein the baseband processing unit BBU is used for controlling the whole base station system, the expansion unit EU is a radio frequency far-end CPRI data aggregation unit and is used for realizing a communication function between the BBU and the RRU, and the remote radio unit (RU) is a low-power transmitting power unit, achieves a radio frequency signal processing function, and is deployed indoors. Each far-end radio frequency unit is independently distributed with a PRS ID number. Seamless connection and smooth transition between positioning can be achieved in any scene, and finally high-availability and high-precision indoor and outdoor continuous positioning is achieved.

The invention discloses a self-adaptive light-transfer single-shadow removal method based on block matching. The method includes the following steps: utilizing Markov random field (MRF) labels to calculate a penumbra area according to information of an acquired shadow mask and an initial shadow area; combining a penumbra mask and the shadow mask together to use the same as a detected shadow area;utilizing self-adaptive decomposition technology to decompose the detected shadow area into uniform shadow blocks, and decomposing an initial non-shadow area into uniform non-shadow blocks, wherein the blocks mutually overlap; for each shadow block, utilizing a covariance matrix to find a pixel block, which is most similar to the same, in the non-shadow blocks; and constructing parameters, which can be automatically adjusted by image reflectivity, to constrain a conventional light-transfer function, finally utilizing the function to carry out shadow removal on matched pixel block pairs, and utilizing weighted averaging for light consistency optimization. The method can obtain high-quality shadow removal effects for all of non-uniform shadows, shadows of curved surfaces and shadows of multiple texture types.

Provides an integrated help content viewer (user interface) that gives a consistent user interface to multiple applications and enables smooth transitions between offline and online help content sources. Provides a single-client help content viewer that is displayed on or adjacent to a given application user interface (such as a word processing workspace) to allow viewing of offline or online help content related to a given topic Inquire. The help content viewer can be pinned to a user interface associated with a given application such that even if a different application's user interface is launched, the help content viewer's position remains above the user interface.

The invention provides a work roller combining the edge drop control and the convexity control of a strip steel. The work roller mainly comprises three sections of roller forms: a first convexity control section, a second edge drop control section and a third linear section, wherein the two ends of the edge drop control section are respectively tangent with the convexity control section and the linear section so as to realize the curvy smooth transition of the work roller; effective control over the central convexity is enhanced by the convexity control section through the adoption of a sinusoidal curve function form; the taper angle of the edge drop control section is increased along with the increase of the length of a taper section through the adoption of an arc curve by the edge drop control section, the edge drop control section is approximately in linear regular variation, and effective control over edge drop is easy to realize; the edge drop control section is tangent with the linear section, the grinding quantity of the work roller can be reduced, and the grinding processing of the roller forms is facilitated; when edge drop and the central convexity are controlled, as the convexity control section of the work roller adopts the sinusoidal curve function form, the central convexity slightly fluctuates in the axial roller shift process of the work roller, and the control over the convexity during actual production is facilitated.

The invention discloses a method and a device for transmitting a picture, which is used for improving the display effect of the picture. The method comprises the steps of receiving a picture corresponding to a first resolution ratio transmitted by a movable terminal; transmitting a request of obtaining the picture to a server in accordance with an identifier of the picture; and receiving the picture corresponding to the second resolution ratio sent by the server, wherein the second resolution ratio is greater than the first resolution ratio.

The invention provides a real-time image defogging method based on the image field depth. Firstly, gray level image processing is carried out on a foggy image; secondly, the gray level image is divided, the dark primary color image is calculated in a minimum value mode, the atmosphere light value is estimated, a rough atmosphere dissipation image and a field depth mask are calculated; thirdly, edge-feathered masks and enhanced images with different field depths are calculated; lastly, fusing is carried out, and a defogged image is obtained. According to the method, when a single image is processed, the field depth information is added into an image contrast increasing method, an image layer fusing method is adopted, parallel computing can be carried out, the real-time performance is high, and the defogging effect is obvious.

The invention is applicable to the field of station ventilation and heat exchange, and discloses a dual-slideway automatic dedusting intelligent ventilation system. A first air door and a second air door on the two sides of a rack respectively enable an air supply duct to be in an open state and a dedusting air duct to be in a closed state through an air door driving device so as to form an air supply channel; and in order to clear dust, the air supply duct is enabled to be in a closed state and the dedusting air duct is enabled to be in an open state through the air door driving device so asto form a dedusting channel. The ventilation system can realize smooth switch between the air supply duct and the dedusting air duct, and the structure is compact, small and convenient to assemble; and meanwhile, a group of fans can be used for air supply and dedusting, thus the equipment cost and using cost can be lowered.

A global optimization method based on strategy adaptive differential evolution. First, calculate the distance between each individual in the population and the optimal individual in the current population, and rank the entire population according to the distance and objective function value; then, according to The average error value of distance ranking and objective function value ranking judges the distribution of individuals in the current population, and then judges the state of the algorithm search, that is, global detection and local search, and sets multiple different mutation strategies for each search state; Finally, for each individual in the population, a mutation strategy is randomly selected from its corresponding state strategy pool to generate a new individual, so as to achieve the effect of balancing the algorithm's global detection ability and local enhancement ability. The invention effectively avoids improper strategy selection from affecting the performance of the algorithm and improves the optimization performance.

The invention relates to a mixed connecting method of a base station and a core network, wherein, the core network is an IP network (1). The MSCe and the BSC are only connected by an IP method; MGW and the BSC are physically connected simultaneously by a TDM circuit of an A2 port and the IP method of an A2p port. The MSCe adopts a default control strategy to selectively perform a circuit bearing in the physical connection. By using the method, BSC are physically connected with MGW in two ways through different ports, and is connected with the MSCe in a unified IP way, by combining the circuit bearing and the load sharing of the physical connection of the control strategy, the original TDM circuit investment of an operator is maximally protected, the newly built IP is used for transmitting as possible, the existing resources can be fully utilized, the cost of the operator is lowered, thereby realizing various characteristic services, and protecting the interests of the operator at the highest degree, and at the same time, enriching the network construction modes and better achieving the smoothed transition of the network..