53 results about "Trailing phenomenon" patented technology

A coordinate inputting/detecting apparatus in which a designating device for designating a position in a flat or substantially flat two-dimensional coordinate inputting/detecting area of the coordinate inputting/detecting apparatus is judged as located in a predetermined range of the coordinate inputting/detecting area when an optical detection signal of an optical unit, that optically detects the designating device inserted into the predetermined range of the coordinate inputting/detecting area, exceeds a first predetermined threshold value. Whether or not the designating device has been inserted into the predetermined range of the coordinate inputting/detecting area is judged and coordinates of the position in the coordinate inputting/detecting area, designated by the designating device inserted in the predetermined range of the coordinate inputting/detecting area, are recognized in accordance with the optical detection signal of the optical unit. A second threshold value is used in recognizing the coordinates of the position in the coordinate inputting/detecting area, designated by the designating device inserted in the predetermined range of the coordinate inputting/detecting area. The second threshold value is set to be higher than the first threshold value used in judging if the designating device has been inserted into the predetermined range of the coordinate inputting/detecting area.

Provided is a pedestrian trailing detection method based on RGB-D. The method comprises the steps that a foreground target is detected firstly through a depth image in a monitor area, then a human head target is precisely detected and located according to hair color information and depth outline information of the head and the shoulders, finally, the human head target is trailed through a camshaft algorithm, and then whether a trailing phenomenon occurs or not is judged. According to the method, pedestrians and luggage can be effectively recognized, the pedestrians can be precisely counted, the pedestrians cannot be mistaken for the luggage, the luggage cannot be mistaken for the pedestrians, high detection precision is achieved on the multi-people trailing phenomenon, and the method is especially suitable for the occasions, such as entrance guards, station security checkpoints and enterprise access channels.

The invention discloses a method for reducing a trailing phenomenon of a liquid crystal screen and a liquid crystal display device. Therefore, a pheromone of display trailing of the existing liquid crystal screen in the prior art can be avoided. The method comprises: backlight of a backlight module group is divided into at least two segments and each segment of backlight corresponds to one segment of liquid crystal screen; and within the time for scanning one frame of image, only the segment of scanned backlight corresponding to the segment of liquid crystal screen is turned on. The device at least includes an SOC main board, a TCON board, a liquid crystal screen, an LED drive unit and LED backlight; the LED backlight is divided into multiple segments and each segment of backlight corresponds to one segment of liquid crystal screen; and the TCON board outputs a control signal, so that only the segment of scanned backlight corresponding to the segment of liquid crystal screen is turned on within the time for scanning one frame of image. According to the invention, on the basis of the segmented backlight zone mode, backlight in corresponding areas at the backlight area of the liquid crystal screen are only turned on at corresponding specific time, thereby effectively reducing the motion image trailing phenomenon of the television set.

The invention relates to a drive device and a drive method for a liquid crystal display. The drive device comprises a liquid crystal display, a grid drive, a data drive and a time sequence controller, wherein the time sequence controller is connected with the grid drive, the data drive and a backlight source, and is used for generating a gray scale level data signal and an internal logic synchronous signal according to an input signal, and generating a grid scanning control signal, a data input control signal and a backlight source control signal according to the internal logic synchronous signal and the time sequence of a data transmission channel to make the backlight source closed between the end moment of a last row of grid scanning control signal of the frame and the start moment of a first row of grid scanning control signal of next frame. The invention controls the on-off of the backlight source between two frames, makes the liquid crystal display screen generate periodic black frame, effectively improves the trailing phenomenon of moving images caused by persistence of vision, improves the frame quality, and simultaneously reduces the power consumption of the backlight source as the backlight source is closed between the two frames.

The invention discloses an LED (light emitting diode) display large-screen high-speed scanning controller, which comprises an LED large-screen driving chip, a decoder and a controllable high-speed discharging circuit, wherein the LED large-screen driving chip is connected with the decoder, the decoder decodes control signals and is connected with a switch tube used as a power supply switch, the switch tube controls the voltage of a plurality of lines of LEDs, the controllable high-speed discharging circuit performs discharging on the output end when the switch tube is switched off. The LED display large-screen high-speed scanning controller has the advantages that the scanning line output falling edge can reach one microsecond, the controllable discharging is carried out on scanning lines, and the output end after the discharging can be controlled into a high impedance state. The trailing phenomenon is eliminated, the refreshing rate is improved, and the influence caused by LED electricity leakage and open circuit can be eliminated.

The invention discloses a non-control-lightening-free shadow elimination circuit for an LED (Light Emitting Diode) display screen, which is arranged in a row driving circuit of the LED display screen arranged on a 1/4 scanning rank branch console. The non-control-lightening-free shadow elimination circuit is characterized in that a triode switching circuit is arranged among a row control line output end of a corresponding decoding chip, a row line output end of a field-effect tube and a public ground; when a level of the row control line output end is changed into a high level from an output low level, the row line output end is used for rapidly pulling a row power supply down; an isolation capacitor is charged and the connection with the public ground is switched off; device parameters are selected so that overlapping time of about 30ns exists between the front row and the next row in one frame of an image and the overlapping time is similar to the descending time of the row power supply. The circuit is simple and low in cost; the non-control lightening of LEDs on the other rows of the same line under the driving of the row power supply can be eliminated effectively; even if the non-control lightening of LEDs, caused by the electric leakage of the LEDs, happens, the trailing phenomenon of the LED display screen can be improved obviously so that human eyes cannot identify the effect that the front rows of the LEDs are slightly bright.

The present invention discloses an image blocking adaptive recursion noise reduction method. The method comprises: uniformly dividing a current image and the noise reduction result of a preview frame into a plurality of subblocks, performing motion detection of each subblock, and obtaining the motion parameter of each subblock; combining adjacent subblocks belonging to motion blocks into one motion region; calculating the noise reduction coefficient k of the preview frame and next frames through the image collection frequency parameters and the distance parameters and the motion parameters m of the subblocks and the motion region; and obtaining the noise reduction result of an nth frame image x(n) according to the noise reduction coefficient and a recursion noise reduction formula obtained through calculation. The present invention further discloses an image blocking adaptive recursion noise reduction device. Noise reduction parameters are adaptively regulated according to the noise level, the motion condition and the frame frequency of each block after doing difference and a distance between the current block and the motion region to effectively eliminate the motion trailing phenomenon and reduce the noise difference between blocks while the noise reduction effect in a stationary region is not decreased.

A color image forming apparatus is provided that forms an image by correcting registration shifts during an image forming process by using image data and which prevents toner from being blown away and scattered during a fixing process by thinning pixels without making an erroneous decision. When multivalued color image is binarized, the threshold is corrected by using information on grayscale level correction. Further, when trailing phenomenon prevention operation is performed on the binarized image data, the patterns to be used for pattern matching are changed and selected according to whether the subscan direction line shifting point lies within the reference window.

The invention discloses a sealant composition, which contains a polyvinyl chloride resin, a plasticizer, a filler, an adhesion additive and a thixotropic agent, wherein the thixotropic agent comprises a thixotropic agent A and a thixotropic agent B, and the average primary particle size of the thixotropic agent A is different from that of the thixotropic agent B. The invention also provides a method for preparing the composition. The sealant composition uses the two thixotropic agents with different average primary particle sizes, can adjust the viscosity of a sealant, and can simultaneously avoid sagging and trailing phenomena.

The invention relates to extraction of DNA in Pleurotus eryngii by an improved CTAB (cetyltrimethylammonium bromide) method. 25-35% anhydrous alcohol is added while adding a mixed solution of Tris-phenol, chloroform and isoamyl alcohol, and the OD260/OD280 values of the extracted DNA are respectively 1.9-2.0, which indicates that the addition of the alcohol is beneficial to removing proteins. Since the alcohol is dissolvable in water and has great affinity for water, the hydration shells of the protein granules can be destroyed, so the proteins precipitate at the isoelectric point; and therefore, the protein precipitate can be removed in the extraction process. When the DNA is subjected to ultraviolet detection by five different methods, the result indicates that only the DNA tape extracted by the invention is the brightest, basically has no degradation trailing phenomenon, and only has few substances detained near the sample charging hole, which indicates that the low-concentration alcohol precipitation method can well remove polysaccharides in the DNA.

The invention provides a method, a device and a system for displaying images through regional dimming, wherein the method comprises the steps of: receiving image signals of a frame image; analyzing the image signals so as to obtain backlight control signals corresponding to a black insertion region and a bright light region of the image; and controlling a backlight source to output bright light to the bright light region and to carry out black insertion on the black insertion region for displaying the image according to the backlight control signals. In the embodiment provided by the invention, through obtaining the black insertion region on the periphery of the bright light region and the bright light region of the image, the bright light is output to the bright light region of the image, the black insertion is carried out the black insertion region on the periphery of the bright light region, the light leakage from the bright light region to a peripheral non-bright-light region is avoided, the image trailing phenomenon during image display is reduced or eliminated, the image definition is enhanced, and the image display quality is improved.

The invention discloses a current transformer which comprises an iron core, primary winding and secondary winding. At least one air gap arranged along a magnetic field line cutting direction is arranged on the iron core, and the sectional area of the iron core is 0.5cm<2> to 3.5cm<2>. The number of turns of the primary winding is 1 turn to 25 turns, and the sectional area of coils of the primary winding is 0.5mm<2> to 4mm<2>. The number of turns of the secondary winding is 10001 turns to 30000 turns, and the diameter range of the coils of the secondary winding is 0.05mm to 0.3mm. The current transformer has the advantages that when a primary current rises to 20 times to 6o times of a rated current, the current transformer can accurately transform direct current components with decay time constant of 20ms to 200ms, and can truly reflect a nonperiodic decay state, output waveforms of the current transformer are difficult to be saturate and are not distorted, and the trailing phenomenon generated by secondary waveforms after fault removal can be further eliminated.

The invention discloses a method for inhibiting residual propellant for propellant loading of a solid rocket engine. The method comprises the following steps: 1) determining the shape and position ofthe residual propellant causing trailing of the solid rocket engine in the later working period; 2) arranging a residual propellant inhibiting piece which is completely the same as the residual propellant in shape and is made of a material which cannot provide thrust at the original position; and 3) filling the combustion chamber with the propellant according to a conventional method to form the propellant column. The invention further discloses the combustion chamber structure determined by the method and a solid rocket engine. According to the invention, the residual propellant inhibiting piece is adopted to replace residual propellant, and when the propellant column just touches the heat insulating layer of the combustion chamber in the later working period of the solid rocket engine, the residual propellant area which originally continues to combust for a period of time stops combusting due to no propellant, so that the trailing phenomenon caused by the residual propellant is reduced or even eliminated, and the striking precision of the missile is improved.

The invention discloses a task transmission congestion control method in a DCN (Data Center Network). Sending rates of small tasks and trailing streams in the tasks are accelerated according to data volume sent by current tasks and streams. According to the method, a congestion phenomenon resulting from big tasks in the DCN and a task trailing phenomenon resulting from few slow streams are avoided, the average finishing time of the tasks is effectively reduced, and the integrated performance of a network application is improved.

The invention discloses a continuous synthesis method for polyether. A double-kettle two-point mode is used to feed continuously, a reaction kettle 1 and a reaction kettle 2 are connected in series, a feed point is arranged on each of the two reaction kettles, an initiator, a DMC catalyst and an epoxyalkane compound are continuously added into the feed point of the reaction kettle 1 to synthesize the polyether with the molecular weight accounting for 50%-99% of the designed molecular weight, then the materials are continuously transferred to the reaction kettle 2 from the reaction kettle 1, the epoxyalkane compound is continuously added into the reaction kettle 2 to synthesize the polyether with the designed molecular weight. According to a product produced through the method, the macromolecule trailing is reduced, the low-molecular-weight trailing phenomenon is also remarkably improved, and the narrow molecular weight distribution is obtained.

The invention discloses a multivariate detection method based on quantum dot fluorescent nanospheres. The method comprises the following steps: respectively coating polymers with quantum dots with different emission wavelengths to prepare the quantum dot fluorescent nanospheres; using the quantum dot fluorescent nanospheres as fluorescent reporter molecules to mark a detection target object, and providing a quantitative detection signal; coating capture molecules corresponding to the detection target object on a polystyrene board; forming a sandwich structure, and performing multi-element quantitative detection through combining with the fluorescence immunoadsorption detection technology. According to the invention, the problems that the stability of traditional organic fluorescent dyes ispoor, the anti-fluorescence bleaching capability is poor and the transmission spectrum has a trailing phenomenon are solved; meanwhile, different quantum dots are separated from the space, so the fluorescence resonance energy transfer effect commonly existing between multi-color light-emitting materials is effectively avoided; multi-element quantitative detection of protein and nucleic acid is carried out in combination with a fluorescence immunoadsorption detection technology, so the method has very important significance and good application prospects in a biological multi-element detectiontechnology.

The invention discloses a current transformer, which comprises an iron core, a primary winding and a second winding, wherein the cross section of the iron core is 1-4cm<2>; the iron core is provided with at least one air gap along a direction of cutting magnetic lines; the number of turns of the primary winding is 1-25 turns, and the number of turns of the secondary winding is 2000-10000 turns; and the diameter of a coil of the secondary winding is 0.06-0.21mm. When meeting a maximum direct-current component under 20-60 times of rated current, the current transformer can output saturated and distorted waveforms and can really reflect the attenuation state of the maximum direct-current component and eliminate the trailing phenomenon of secondary stage of waveforms according to optimized selection of parameters after faults are removed.

The invention provides a light shielding member, a lens set with a light shielding structure and a laser radar. The light shielding member comprises a first shielding part and a connecting part, wherein the first shading part and the connecting part form a first preset included angle, and the first shading part is extended to a first preset height in the direction away from the connecting part. The lens set with a light shielding structure comprises a first lens set, a second lens set and the light shielding member; wherein the first lens set and the second lens set are adjacently arranged, the first lens set comprises at least one optical lens with a first surface, and the first shading part covers part of the first surface. The light shielding member is simple in structure and can be easily assembled onto an existing laser radar, and the production cost and the research and development cost are reduced. The lens set with the light shielding member is used on a laser radar to reduce the influence of stray light, and the generation of ghost images or trailing phenomena of the laser radar is avoided.

A method for extractING genomic DNA of Lonicera japonica Maxim belongs to field of molecular biology. The method mainly comprises the following steps: firstly, cell walls and cell membrane are brokenso that DNA is fully released into buff; secondly, the interference of protein, polysaccharide, pigment and other impurities was eliminated; finally, DNA degradation is prevented. The sample was treated with SET nucleus separation buffer, which could separate the nucleus from the secondary substances such as polysaccharides and polyphenols in the supernatant, PVP added in the grinding process andbeta-Mercaptoethanol, can effectively prevent the oxidation of polyphenols, chloroform/isoamyl alcohol extraction, the addition of diluted CTAB to remove polysaccharides. The leaves of Caprifoliaceaeplants are rich in carbohydrates and polyphenols, These substances not only affect the extraction of DNA, but also affect the activity of Tag enzyme in PCR. By this method, DNA with high yield and good quality can be obtained. DNA electrophoretic bands are clear and bright, and there is no tail-trailing phenomenon, which can meet the further research at molecular level.

The invention discloses an array substrate as well as a display panel with the same and a display device with the same. The array substrate comprises a lining substrate, a plurality of pixel units, first electrodes and second electrodes, wherein the plurality of pixel units are arranged on the lining substrate; the first electrodes and the second electrodes are arranged inside the pixel units; the first electrodes are arranged on the second electrodes; the first electrodes comprise first stripy opening areas which extend in a first direction; the first opening areas comprise first ends and second ends; orthographic projection of photic zones of the pixel units to the plane of the lining substrate covers a part of the first opening areas between the first ends and the second ends; orthographic projection of non-photic zones of the pixel units to the plane of the lining substrate covers orthographic projection of the first ends and the second ends to the plane of the lining substrate. Therefore, in a formed electric field, electric field components which result in disordered twisting of liquid crystal molecules are positioned in the non-photic zones of the pixel units, and thus the trailing phenomenon of the non-photic zones of the pixel units can be reduced.

The invention discloses a reversal radar device utilized by a vehicle and belongs to the radar measurement technology field. The radar device comprises a casing and a sensor, wherein a buffering sleeve is arranged between the casing and the sensor, a back end of the buffering sleeve is integrated with a silicone rubber end cap, and a middle portion of the end cap is provided with a hole for penetration of a probe core. Through the radar device, the back end of the buffering sleeve is provided with the end cap, so the back end of the buffering sleeve has no cavity but only the hole for penetration of the probe core, supersonic waves emitted by the sensor are absorbed through a tail portion of the buffering sleeve, bifurcation, jittering and trailing phenomena generated in a user process of the reversal radar device are avoided, and use accuracy of the radar device is improved.