249results about How to "Reduce smearing" patented technology

A process for the preparation of an ink which comprises mixing an ink vehicle, a colorant and a polyurethane resin emulsion.

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.

A method of and apparatus for determining and controlling the inertial attitude of a spinning artificial satellite without using a suite of inertial gyroscopes. The method and apparatus operate by tracking three astronomical objects near the Earth's ecliptic pole and the satellite's and/or star tracker's spin axis and processing the track information. The method and apparatus include steps and means for selecting preferably three astronomical objects using a histogram method and determining a square of a first radius (R₁²) of a track of a first astronomical object; determining a square of a second radius (R₂²) of a track of a second astronomical object; determining a square of a third radius (R₃²) of a track of a third astronomical object; determining the inertial attitude of the spin axis using the squares of the first, second, and third radii (R₁², R₂², and R₃²) to calculate pitch, yaw, and roll rate; determining a change in the pitch and yaw of the artificial satellite; and controlling on-board generated current flow to various orthogonally-disposed current-carrying loops to act against the Earth's magnetic field and to apply gyroscopic precession to the spinning satellite to correct and maintain its optimum inertial attitude.

The invention relates to an image shooting method and device and belongs to the field of photography. The method includes: acquiring the motion parameters of a mobile terminal; determining the shooting parameters of a shoot according to the motion parameters; shooting an image according to the shooting parameters. By the method, the problem that the shot image has an evident image tail due to the motion of the mobile terminal is solved, the shooting parameters of one shot are set according to the motion parameters of the mobile terminal, and the shot images have no image tails or the image tails are reduced.

The invention discloses a torsional mode magnetostriction sensor array, and belongs to the field of ultrasonic non-destructive testing. According to the phenomenon that an SH wave vibration mode in a plate is similar to a torsional mode in a pipeline, an MPSA (modified planar solenoid array) coil suitable for pipeline configuration and array is provided, and the torsional mode magnetostriction sensor array is designed and researched to excite the torsional mode in a pipeline. Tests verify that a T (0, 1) mode can be excited on a pipeline by the researched torsional mode magnetostriction sensor array, and in the tests, the frequency response characteristic of the sensor array is tested. The sensor array is used for rapidly and effectively detecting the position of a defect in an alloy steel pipe, the positioning precision is relatively high, and a basis is established for implementing two-dimensional defect imaging in the pipeline by the sensor array combined with a phased array principle.

The invention provides a method of reducing in-trench smearing during polishing. The method comprises providing a substrate comprising a first layer comprising an insulating material, a second layer comprising a filling material, and a plurality of field and trench regions. A polymeric material is infiltrated over the substrate, wherein the polymeric material fills the trench regions and covers the field regions. The polymeric material optionally is removed from the field regions, followed by baking of the substrate such that the polymeric material in the trench regions becomes recessed below the insulating material of the field regions. The substrate is then subjected to a temperature of about 100° C. or more for about 30 minutes or longer, such that during polishing of the substrate, smearing of the filling material in the trench regions is reduced as compared to polishing of the substrate under the same conditions except for subjecting the substrate to the temperature of about 100° C. or more for about 30 minutes or longer. When desirable, a layer of additional material can be deposited over the polymeric material such that it forms a layer over the polymeric material in the trench regions and the filling material in the field regions. The substrate is then polished to obtain a substantially planar surface.

The invention relates to the technical field of image processing, provides an image wide dynamic compensation method and system based on double cameras. The method comprises following steps of controlling a first camera and a second camera to lock photographing objects; controlling the first camera and the second camera to photograph the photographing objects simultaneously, thus generating a first object image and a second object image; executing short exposure mode operation to the first object image, thus generating a first exposure image, meanwhile, executing long time exposure mode operation to the second object image, thus generating a second exposure image; carrying out image fusion processing to the first exposure image and the second exposure image, thus generating an object image. The generating time of the object image is greatly shortened; and the smearing phenomenon liable to be generated when a moving object is photographed is reduced.

The invention relates to a method for head attitude compensation. The method comprises: according to display time of at least two rendered image frames, predicting rendering completion time t1 of a to-be-displayed image frame; according to the t1, calculating display start time t2 of the to-be-displayed image frame; according to the t2, calculating first time, predicting a first time head attitude Q, according to the head attitude Q, rendering the to-be-displayed image frame; according to start time a of any completed display cycle, calculating start time t of a to-be-displayed cycle; according to the t and the display cycle T, calculating second time, to obtain a second time head attitude Q', and according to the Q and the Q', calculating a head attitude compensation matrix; according to the attitude compensation matrix, performing attitude compensation calculation on the to-be-displayed image frame; according to vertex coordinates after attitude compensation and vertex coordinates of the to-be-displayed image frame, calculating a correction coefficient; and according to the correction coefficient, calculating a display image frame after the head attitude compensation. The method and the device accurately compensate head attitude of the to-be-displayed image frame, so that smear phenomenon and dizzy feeling in VR system use are reduced.

An image capture apparatus is disclosed that includes an aperture having an adjustable aperture value, an image capturing element, and a drive unit that drives the image capturing element to operate in video image capturing mode and still image capturing mode. The aperture has at least a dedicated aperture value for the still image capturing mode or a dedicated aperture value for the video image capturing mode.

The invention discloses a backlight control method and apparatus, and a liquid crystal display apparatus. The main content of the method comprises the following steps: from the time when it is monitored that a first row of pixels in an N-th row image subarea of a current image frame starts driving scanning, switching off a backlight lamp of a backlight subarea for a time length of t, wherein t is scanning black frame insertion time; after the backlight lamp of the backlight subarea is switched off for the time length of t, switching on the backlight lamp of the backlight subarea for a preset time length, and enabling backlight brightness of the current backlight subarea to satisfy needed brightness; and after the backlight lamp of the backlight subarea is switched on for the preset time length, setting the backlight lamp of the backlight subarea to be closed. In such a way, a tailing phenomenon generated due to a visual persistence effect is effectively improved, at the same time, it is ensured that the backlight brightness of each backlight subarea is the same, the brightness uniformity of the backlight subarea is improved, and the display quality of a liquid crystal display apparatus is effectively improved.

The invention belongs to an omnidirectional cylindrical dipole antenna for underground earth-probing radars, which comprises tubular monopole antenna cylinders, conical antenna heads, loading resistors, corresponding compression springs, inter-section fixing sleeves, supporting tubes, nut sleeves, connecting and fixing sleeves and coaxial cables, the loading resistors and the corresponding compression springs are respectively arranged in the holes of each two end surfaces between the antenna heads and the antenna sections and between the antenna sections, and monopole antennas are formed by the nut sleeves. Since the invention arranges the loading resistors between the antenna heads and the antenna sections and between the antenna sections to change the distribution of the current of the surface of the antenna, not only is the performance of the antenna improved, but also the production technique is simplified, the antenna can be matched with a borehole radar to operate under the conditions of center frequency equal to about 100M and bandwidth greater than or equal to 120M, the obtained waveform is neat, the main-to-side lobe ratio is distinct, tailing is tiny, and the waveform is stable; and consequently, the antenna is characterized in that: the comprehensive performance is high, the structure is simple, the diameter is small, the production cost is low, and the antenna can be matched with the borehole radar under the conditions of low frequency band and high bandwidth, and can effectively increase the performance, detection range and efficiency of the borehole radar.

A reflection-type small blind area supersonic detector based on multi-frequency belongs to the technology field of detection. The detector adopts a universal ultrasonic probe (sensor) to realize the detection of the small blind area or non-blind area. The ultrasonic probe of the detector has no more than two operating frequencies, wherein a frequency f1 works in the transmission band (at or near natural frequency) of the ultrasonic probe, and the other frequency f2 works out of the transmission band of the ultrasonic probe. The frequency f2 is adopted to detect the measurement of a small range, and the small detection range thereof is in or near the blind area of the frequency f1 detection. Since the frequency f2 is not near a resonance point, emission signals have little direct impact on receiving signals, and the probe mainly receives reflection signals, thus greatly reducing the blind area. The reflection type small blind area supersonic detector based on multi-frequency of the invention can also improve the long-distance detection performance of the frequency f1.

The invention belongs to the field of analysis of traditional Chinese medicinal materials, and particularly discloses an HPLC (High performance liquid chromatography) method for distinguishing different cultivars of uncaria. All chromatographic peaks are separated effectively when the uncaria traditional Chinese medicinal materials are subjected to HPLC detection by optimizing each experimental parameter; the phenomena of mutual interference of the chromatographic peaks, trailing and the like are reduced; mutual interference of the chromatographic peaks of different ingredients in different cultivars of uncaria in HPLC detection is basically avoided, so as to provide basis for authenticating different cultivars of uncaria and constructing a uncaria HPLC fingerprint spectrum.

The invention provides a picosecond balance pulse signal generator. The picosecond balance pulse signal generator comprises a pulse signal generation circuit, a first shaping circuit and a second shaping circuit. The pulse signal generation circuit comprises an avalanche triode pulse generation circuit which is formed by two cascaded avalanche triodes and used for generating a bipolar nanosecond balance pulse signal by an inputted negative polarity trigger pulse signal via triggering. The front end of the first shaping circuit is electrically connected with the pulse signal generation circuit and used for shaping the nanosecond balance pulse signal so that a picosecond pulse signal is generated. The front end of the second shaping circuit is electrically connected with the first shaping circuit and used for shaping trailing and overshoot of the picosecond pulse signal. The high-amplitude picosecond balance pulse signal generator is simple in structure and small and exquisite in circuit structure, and the generated balance pulse waveform is great in symmetry, small in trailing and high in amplitude so that the picosecond balance pulse signal generator can be applied to a pulse type ultra wide band radar system, and detection requirements of the pulse type radar system for different depth and resolution can be met.

An imaging apparatus includes a solid-state imaging device and an imaging device driver. The imaging device includes first pixels and second pixels. The first pixels execute an imaging operation for a long exposure time. The second pixels execute an imaging operation for a short exposure time which overlaps with a part of the long exposure time. The first and second pixels are mixedly arranged in a two dimensional array. Plural different drive controlling modes each controlling operation timings of start and end of exposure of the first pixels and operation timings of start and end of exposure of the second pixels are prepared in advance. The imaging device driver selects one of the drive controlling modes in accordance with a shooting condition under which an object image is taken and drives the solid-state imaging device in accordance with the selected mode.

The invention relates to a liquid crystal display device and a brightness adjusting method and apparatus thereof. The brightness adjusting method comprises: a pixel needing to carry out gray scale switching in a display panel of a liquid crystal display device is determined as a to-be-processed pixel zone; according to a correspondence relation between the pixel in the display panel and a backlight region in a backlight source, a backlight region corresponding to the to-be-processed pixel zone in the backlight source is determined as a to-be-light-modulated region; and the brightness of the to-be-light-modulated region is adjusted according to a gray scale value of the pixel in the to-be-processed pixel zone within the liquid crystal deflection period of gray scale switching of the pixel of the to-be-processed pixel zone. According to the liquid crystal display device and the brightness adjusting method and apparatus thereof, dynamic compensation of a correlated backlight region in the backlight source can be realized, thereby reducing occurrence of a trailing phenomenon in liquid crystal display. Therefore, the brightness displayed finally on the display panel tends to be uniform, thereby realizing a good moving display effect.

The present invention provides a double-layer sector array folded coil structure integrated in a flexible circuit board, and designs and develops an arrayed omnidirectional type horizontal shear modal magnetostrictive transducer. Based on the magnetostrictive effect of ferromagnetic material nickel, the transducer realizes excitation of omnidirectional horizontal shear modal SH wave in the plate structure. Test verifies that the developed arrayed omnidirectional type horizontal shear modal magnetostrictive transducer can excite single SH0 modal waveguide inaluminum plate, and verifies that the developed omnidirectional type horizontal shear modal magnetostrictive transducer has better frequency response characteristics. The developed omnidirectional type horizontal shear modal magnetostrictive transducer and an array combined imaging algorithm can achieve efficient defect imaging on plate structure in wide range and board structure, and has very great value and potential in health monitoring and non-destructive evaluation of the plate structure.

The invention provides a method and apparatus for reducing display image streaking and relates to the technical field of virtual reality. The method comprises the following steps: according to attribute information of a display screen, determining a rendering black-pixel mode of an image, wherein the rendering black-pixel mode comprises a first rendering rule and a second rendering rule which are different from each other; obtaining an n-th frame of image needing to be loaded, and according to the first rendering rule, performing rendering black-pixel processing on the n-th image; and obtaining an (n+1)-th frame of the image needing to be loaded, and according to the second rendering rule, performing rendering black-pixel processing on the (n+1)-th frame of the image. According to the embodiments of the invention, the n-th frame of the image and the (n+1)-th frame of the image are processed by use of the two rendering rules, and when a user uses virtual reality equipment, pixels in the image turns black from darkness or turns black from brightness, such that the problem of foreground and background edge streaking in a display image is reduced, a hardware equipment program does not have to be changed, the realization is simple, and the refresh rate of the virtual reality equipment is not reduced.

The invention provides a picosecond single recurrent pulse transmitter. Picosecond single recurrent pulse signals are generated according to the switching characteristics of a radio frequency audion, the driving capacity of a broadband linear power amplifying audion, the phase step characteristics of a phase step recovery diode, the capacitance variable characteristics of a variable capacitance diode, the total reflection characteristics of a micro-strip short-circuit wire and the like, the output pulse positive and negative polarity symmetry is good, the peak-to-peak value amplitude is large, the pulse bottom width and trailing are small, and the picosecond single recurrent pulse transmitter is suitable for the high-resolution pulse type ultra wide band radar system application.

The invention discloses an effective wire and cable monitoring system. The system comprises an airborne data acquisition module, a flight control module, a wireless transmission module and a ground monitoring center; the flight control module is used for controlling the flight state of the unmanned aerial vehicle according to the flight instruction sent by the ground monitoring center; the airborne data acquisition module is used for acquiring infrared images and position information of wires and cables, the wireless transmission module is used for realizing information transmission between the unmanned aerial vehicle and the ground monitoring center, and the ground monitoring center is used for processing and analyzing the received infrared images so as to diagnose faults of the wires andthe cables. The beneficial effects of the invention are that the system achieves the large-range searching of a longer wire and cable through employing the unmanned plane, carries out the photographing of an infrared image of the wire and cable according to airborne infrared imaging equipment, carries out the processing and analysis of the photographed infrared image, achieves the diagnosis of the fault hidden troubles of the wire and cable, and achieves the effective monitoring of the wire and cable.

The invention relates to a liquid crystal display (LCD) device and a drive method thereof. The drive method comprises: compensating input voltage of data wires in the current frame by comparing the input voltages of the data wire in the current frame and the former frame, thereby leading the input voltage of the data wire after being compensated to form overshoot voltage and to be output into a liquid crystal panel; controlling the starting/closing of LED backlight, when the overshoot voltage is output to the liquid crystal panel, the LED backlight is closed; while the overshoot voltage is recovered to the normal voltage, the LED backlight is started. The liquid crystal display (LCD) device comprises the liquid crystal panel, a time schedule controller, an overshooting device, a data driven device, a grid actuator and an inverter; wherein, the inverter is used for controlling the starting/closing of a plurality of lighting tubes in the LED backlight; when the overshoot voltage is output to the liquid crystal panel, the LED backlight is closed; while the overshoot voltage is recovered to the normal voltage, the LED backlight is started. The liquid crystal display (LCD) device and the drive method thereof have the advantage of rapid driving response, and the overshoot or undershoot can not cause image quality to be reduced, thereby decreasing the phenomenon of trailing smear and improving the dynamic display image quality.

The embodiment of the invention discloses a dual-camera based scanning method. The method comprises the following steps: acquiring a first image of a first area of a target shooting object scanned by a first camera, and acquiring a second image of a second area of the target shooting object scanned by a second camera at the same time, wherein the first camera and the second camera are arranged on a same terminal; splicing the first image and the second image, and obtaining image area including whole areas of the target shooting object; and displaying an image obtained by splicing. The invention further discloses a dual-camera based scanning device. By adopting the dual-camera based scanning method and device provided by the invention, the scanning exposure time can be saved.