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720results about How to "Guaranteed brightness" patented technology
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Light emitting diode (LED) light bulb
InactiveUS20080285279A1Luminance and brightness can be guaranteedLess energyCoupling device connectionsPlanar light sourcesEngineeringBrightness perception
The present invention relates to an LED light bulb. The LED light bulb comprises a base and a hollow shell. The base has a closed end, an open end and a sleeve between the two ends. The shell is connected to the open end of the base. The LED light bulb comprises at least two LEDs substantially linearly arranged within the shell. By arrangement of multiple LEDs one or more strands the luminance or brightness of the bulb is improved compared with a bulb with one LED or with several horizontally arranged LEDs in a common place, without sacrificing the advantage of energy saving.
Owner:NG KAI KONG +1
Automatic license plate identification system at urban checkpoint
ActiveCN101807346AReduce maintenance difficultiesReduce seamless coverageTelevision system detailsRoad vehicles traffic controlData centerSystem maintenance
The invention relates to an automatic license plate identification system at an urban checkpoint, which belongs to the field of monitoring and comprises a coil assembly, a vehicle detection module, a license plate identification module, a front-end module and a network transmission module, wherein the coil assembly is connected to the vehicle detection module, and coils generate a pulse signal when a vehicle passes through the urban checkpoint; the vehicle detection module detects the coils and transmits the received pulse signal to the license plate identification module; the license plate identification module captures a video image transmitted by the front-end module when the license plate identification module receives the pulse signal, finishes the entire video image processing process of the identification of a license plate, and uploads a processing result by a network; the front-end module carries out synchronous exposure, synchronous supplemental lighting and shooting on a camera under the control of a vehicle identification module and transmits the video image to the license plate identification module; and the network transmission module uploads the data of the license plate and the vehicle to a data centre. The system integrates most of the functions in the candid identification of the license plate at the checkpoint by adopting integrated design, reduces the system maintenance difficulty caused by the complexity of the system greatly, enhances the entire stability and reliability of the system, and lowers the maintenance cost of the system.
Owner:北京数字智通科技有限公司
Double exposure implementation method for inhomogeneous illumination image
The invention discloses a double exposure implementation method for an inhomogeneous illumination image. The double exposure implementation method for the inhomogeneous illumination image comprises the following steps: obtaining an illumination image; obtaining a reflection image; overlaying the illumination image with the reflection image to obtain the global enhancement effect; fusing the global enhancement effect with the original image; and carrying out color correction on an enhancement result to obtain a visual matching image. According to the double exposure implementation method for the inhomogeneous illumination image, which is disclosed by the invention, the smooth property of the illumination image is constrained, and the reflection image is sharpened by the visual threshold value characteristic to guarantee the detail information of the image; with an image fusion method, the luminance, the contrast ratio and the color information of an original image luminance range can be effectively kept; because the characteristic of the human eye visual perception of average background brightness is introduced in, the fused image can be used for effectively eliminating image color distortion near a shadow boundary; the color of a low-illuminance zone is restored by the color correction technology; the colors of the low-illuminance zone and the luminance range are free from obvious distortion; the continuity is good; and the visual effect is more nature.
Owner:AIR FORCE UNIV PLA
Electrically-controlled liquid crystal light modulation glass and film
InactiveCN101059607AReduce energy consumptionSmall instantaneous working currentStatic indicating devicesPlastic filmElectric control
The invention uses the liquid crystal near crystalline state as main material, to be filled between two mediums via special technique, as two layers of glasses, one glass layer and one plastic film layer, or two plastic film layers. When the electrode on the glass or the film is powered, the interlayer liquid crystal distribution is changed, to supply electric control light adjustment function to the two mediums, that using different controlled voltage signal between the transparent and frosted shield to freely switch, and via mixed with a binary paint, the invention can realize electric control switch between transparent and color shield (colorful or black), and via dividing electrode, the invention can display patter or word. The invention has wide application in decoration, which needs private control area and vehicle electric field, and the electric information display technical field.
Owner:孙刚
Image defogging method based on dark channel information
ActiveCN102968772AReduce computational complexityAvoid handlingImage enhancementPattern recognitionTransmission coefficient
The invention discloses an image defogging method based on dark channel information, belonging to the technical field of image treatment and computer vision. The method disclosed by the invention comprises the following steps of: calculating the minimum value of each pixel of each color channel of an input image via a minimum value filter; then calculating dark channel counting values of the image under different scale parameters and carrying out Gaussian smoothing filter on the dark channel counting value corresponding to each scale parameter; distributing different weight values to the filtered dark channel counting values according to different scale parameters; and carrying out weighted optimization on the dark channel counting values and calculating a transmission coefficient of the scene so that the defogging of the image is realized. The application of the invention can avoid complex soft matting optimization steps and computing complexity of the defogging; the image with high quality can be obtained after the defogging; and the requirement on real-time treatment application can be met.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Colored filter with spacer, liquid crystal display device and method for making the same
InactiveCN101303522AEvenly distributedUniform thicknessPhotomechanical apparatusNon-linear opticsPorosityLithographic artist
The invention discloses a colorful optical filter base plate with fixed spacers and a manufacturing method thereof. The colorful optical filter comprises a transparent substrate, a colorful film layer, a latticed black matrix, a flat layer, a transparent electrode layer and a columnar spacer. Firstly, the well-known colorful optical filter base plate is coated with transparent photosensitive material and then exposed by a mask with preset patterns, after being treated by adopting micro-lithography, the transparent columnar or frustum-shaped spacers are directly formed on the colorful optical filter base plate; the central shafts of the spacers are perpendicular to the surface of the flat layer and corresponding to the intersection of gridlines of the black matrix. Since the spacers are directly formed on the colorful optical filter base plate and the height, distribution and density thereof are all preset and controllable, the liquid crystal thickness (CELL GAP) between LCD base plates can be kept uniform, thus avoiding arranging the spacers within a pixel to affect the porosity of LCD.
Owner:BYD CO LTD
Pixel circuit, driving method of pixel circuit, organic light-emitting display panel and display device
ActiveCN107452339AShorten write timeRecovery Threshold Voltage ShiftStatic indicating devicesSolid-state devicesDisplay deviceParasitic capacitance
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
Light emitting diode light bulbs with strands of LED's
InactiveUS7883242B2Guaranteed brightnessLuminance be guaranteedCoupling device connectionsPlanar light sourcesEngineeringLED lamp
Owner:NG KAI KONG +1
Light source system and projection system
Owner:APPOTRONICS CORP LTD
Method for eradicating liquid crystal display dynamic trailing smear
ActiveCN101105915AGood for motion blur removalGuaranteed ContrastStatic indicating devicesLiquid-crystal displayReduced contrast volume
The invention discloses a method for eliminating dynamic streaking of liquid crystal display. The concrete steps include: (a). convert images of two following frames into black and white brightness signal images; (b). compare the pixels at the corresponding position in the black and white brightness signal images and retain the pixel with a smaller grayness value; (c). form a frame of black frame insertion images (Gn) with the group of pixels obtained after the comparison of each pair of pixels; (d). insert the black frame insertion images (Gn) into images of two following frames. The method of the invention is to compare continuous image signals of two frames, and form a frame of 'new grayness distribution signal' with the darker pixels of each pixel position as the black frame insertion image to reach the purpose of lowering MPRT and eliminating streaking of dynamic images. The invention can not only overcome the shortcoming of the low efficiency of the black frame insertion technique, but also overcome the inadequate elimination of dynamic blurs and the high decline of the contrast in gray frame insertion technique. In addition, the method of obtaining insertion frames is simple and accessible, thus greatly saving the production cost.
Owner:NANJING CEC PANDA LCD TECH
Brightness adjusting method for terminal screen and mobile terminal
ActiveCN105976760AReduce brightnessGuaranteed brightnessCathode-ray tube indicatorsLightnessBrightness perception
The embodiments of the invention provide a brightness adjusting method for a terminal screen. The method comprises: when receiving a screen brightness adjusting signal, adjusting the brightness of the terminal screen to a preset brightness value; acquiring a gamma curve corresponding to the screen brightness adjusting signal; when receiving an image to be displayed on the terminal screen, extracting a gray-scale value of the image; adjusting the gray-scale value of the image by adopting the gamma curve to obtain a target gray-scale value; and displaying the image by adopting the target gray-scale value. In the method, after a user executes the operation of reducing the brightness of the screen to preset low brightness, the brightness of the screen is guaranteed at certain brightness to ensure the color detail of the screen; and then the gray-scale value of the image to be displayed on the screen is reduced by adopting the gamma curve to achieve the effect of reducing the brightness. Therefore, the problem that the color detail of the screen is lost while the brightness of the screen is reduced is solved.
Owner:VIVO MOBILE COMM CO LTD
Device and method for adjusting backlight of red-green-blue-white (RGBW) light display system
InactiveCN102122501ALow powerGuaranteed brightnessCathode-ray tube indicatorsColor saturationComputer science
The invention relates to a backlight adjusting device. The device comprises a color saturation generating unit, a gain value generating unit and an adjusting unit, wherein, the color saturation generating unit is used for receiving a red-green-blue (RGB) light sub-pixel of an RGB light pixel and generating the color saturation of the RGB light pixel according to the RGB light sub-pixel of the RGBlight pixel; the gain value generating unit is used for generating gain value of the RGB light pixel according to the color saturation; and the adjusting unit is used for adjusting a backlight sourceaccording to the average gain value of a plurality of the RGB light pixels.
Owner:CPT TECH GRP +1
Image processing method, mobile terminal and computer readable storage medium
InactiveCN107566748AImprove imaging effectLow amount of noiseTelevision system detailsColor television detailsImaging processingImage synthesis
The invention provides an image processing method, a mobile terminal and a computer readable storage medium. The image processing method comprises the steps of detecting whether a preview image collected by a camera is a preset shooting scene; if so, controlling the camera to collect a first group of images in a first exposure mode and a second group of images in a second exposure mode, respectively; and performing image combination on the M frames of images in the first group of the images and N frames of images in the second group of images to generate a target image, wherein the exposure time of the first exposure mode is greater than that of the second exposure mode, M is less than or equal to the total number of the first images of the first group of the images, N is less than or equal to the total number of the second images of the second group of the images, and M and N are integers greater than or equal to 2. Therefore, the mobile terminal, even in a scene which is not good forshooting, can obtain an image with a relatively good imaging effect.
Owner:VIVO MOBILE COMM CO LTD
Automatic control method and device of camera head
InactiveCN102629988AStable and smooth outputGuaranteed brightnessTelevision system detailsColor television detailsCamera controlAutomatic control
The invention discloses an automatic control method and device of a camera head, is applied to the technical field of image collection, and is used for solving the stable imaging problems of the bayonet system and the like to a characteristic target area in the intelligent traffic field. The method comprises the steps as follows: setting the initial range values of the background brightness, the foreground target brightness and the object brightness according to experience or scene requirements; extracting the foreground target in the region to be detected, and calculating the brightness value of the foreground target; locating the target in the region to be detected by adopting the target location technology, and calculating the brightness value of the target; detecting the target area and panoramic picture according to the brightness value of the foreground target, and calculating the background brightness value; and obtaining a camera head control coefficient according to the foreground target brightness value, the background brightness value and the target brightness value, and selecting a camera control mode and a brightness control mode to control the automatic exposure and gain of the camera head. According to the embodiment of the invention, the target in the region to be determined can be clearly and effectively imaged, and the visual effect of the panorama is simultaneously considered.
Owner:ENC DATA SERVICE CO LTD
Electro-optical device, color filter substrate with relective and transmission regions and electronic apparatus
InactiveUS7463317B2Guaranteed brightnessHigh saturationOptical filtersNon-linear opticsReflective layerProtection layer
A reflective layer 212 having an aperture 212a for each pixel is formed on a first substrate 211, and a colored layer 214 for constituting a color filter is formed thereon. A surface protection layer 215 is formed on the colored layer 214, and a transparent electrode 216 is formed further thereon. The colored layer 214 is constituted so as to cover the aperture 212a in a two-dimensional direction, but overlaps only a part of a reflection surface in the pixel in a two-dimensional direction.
Owner:138 EAST LCD ADVANCEMENTS LTD
Quantum dot ink and preparation method thereof
The embodiment of the invention provides quantum dot ink and a preparation method thereof and relates to the technical field of quantum dots, wherein the preparation method of the quantum dot ink comprises: carrying out ligand exchange on a quantum dot stock solution and a ligand in the argon shield and under the condition of 50-70 DEG C; transferring the solution obtained by ligand exchange into a centrifugal bottle, adding a precipitation promoting additive and a quantum dot dispersion promoting additive, and carrying out centrifugal purification to obtain a quantum dot precipitate, carrying out vacuum drying on the quantum dot precipitate to obtain quantum dot powder; and mixing the vacuum dried quantum dot powder with a non-polar solvent according to a certain mass ratio to obtain the quantum dot ink. According to the quantum dot ink and the preparation method thereof provided by the invention, the prepared quantum dot ink can be used for an ink-jet printing method, and most of quantum dots are about to be remained after a volatile solvent in the ink is volatilized, so that the requirement for the quantity of current carriers in the quantum dots when a photoelectric device is conducted as well as the brightness and the definition when pictures and characters are imaged are guaranteed.
Owner:厦门世纳芯科技有限公司
Adaptive image defogging method based on textures
ActiveCN102982513AControl saturationGuaranteed brightnessImage enhancementImaging processingImaging quality
The invention discloses an adaptive image defogging method based on textures and belongs to the technical field of imaging processing and computer vision. Corresponding scene transmission coefficients are calculated through carrying out texture classification on an input image and combining texture classification results with dark channel values with different scales to realize quick image defogging based on texture adaption. The adaptive image defogging method has the beneficial effects that the complicated soft cutout optimization step can be avoided, the algorithm complexity of defogging by using an He method is reduced, the Halo phenomenon easily caused after defogging is avoided, and the saturation of a defogged image can be better controlled; meanwhile, the calculation on an atmospheric light vector is corrected to ensure the brightness of the defogged image; and the adaptive image defogging method is high in processing speed and high in defogged image quality and can satisfy the demands of real-time processing application.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Curved screen and flat panel display module full-lamination method and integrated screen
ActiveCN106379023AEasy to operateReduce the difficulty of fittingLamination ancillary operationsLaminationLiquid-crystal displayEngineering
The invention discloses a curved screen and flat panel display module full-lamination method, which comprises the following steps: designing and manufacturing a frame, fixing a frame-pasting curved screen and the frame through a positioning fixture, injecting liquid optical cement, putting a flat panel liquid crystal display module, fixing through the positioning fixture to form an integrated screen, putting the positioning fixture and the integrated screen into a heating device and carrying out heating curing, removing the positioning fixture and the integrated screen out of the heating device after completing the above steps, dismounting the positioning fixture, removing spilled cement residue at the edge of the frame and completing lamination. The invention also discloses a curved screen and flat panel display module full-laminated integrated screen prepared according to the above processing method. By arranging the frame between the curved screen and the flat panel liquid crystal display module, lamination of a curved-surface product is converted into traditional flat-panel type lamination. The operation steps are simple. Investment in equipment and fixture is less. Batch production is convenient to realize.
Owner:伟亚光电有限公司
Display device and used display panel, pixel circuit and compensating mechanism
ActiveCN1632850AMeasured offsetGuaranteed brightnessStatic indicating devicesElectrical testingVoltage generatorGrating
It is display device with time sequence control circuit, programmable voltage generator, grating and source drive circuit and display panel. Wherein the redundant picture element unit and display picture element unit is formed with non-silicon thin film transistor and organic light diode. This invention can compare the working current of each display picture element unit and relative redundant picture element unit. Then the time sequence control circuit can compensate the current of the display unit after working a while according to the comparing results.
Owner:AU OPTRONICS CORP
Headlamp for vehicle
ActiveCN1920378AHigh luminous intensityEfficient use ofVehicle headlampsPoint-like light sourceEllipseOptical axis
Owner:KOITO MFG CO LTD
Quantum dot light-emitting diode and preparation method thereof
InactiveCN107275499AConducive to conductive lightConductive Luminescence GuaranteeSolid-state devicesSemiconductor/solid-state device manufacturingQuantum dotZinc
The invention provides a quantum dot light-emitting diode and preparation method thereof. The preparation method includes printing a mixed organic solution including poly(3,4-ethylenedioxythiophene) and polystyrolsulfon acid salt, an organic solution including a triphenyl diamine polymer, an organic solution including quantum dots and an organic solution including zinc oxide on a conductive substrate surface in sequence through an ink-jet printing method to obtain a primary quantum dot light-emitting diode; and depositing an electrode on the non-conductive substrate side of the obtained primary quantum dot light-emitting diode to obtain the quantum dot light-emitting diode. The preparation method realizes large-area simple preparation of quantum dot light-emitting diode by adoption of an ink-jet printing technology combined with a defined proportion of ink, and the operation is simple; and the ink used by the preparation method contributes to improvement of printing resolution, ensures uniformity of printing, and facilitates electric conduction light emission of the diode.
Owner:广州琉芯光电科技有限公司
Side-entering type backlight module and display device
InactiveCN106154398AReduce absorptionGuaranteed brightnessMechanical apparatusPlanar/plate-like light guidesEngineeringLight guide
The embodiment of the invention provides a side-entering type backlight module and a display device, and relates to the technical field of the display device. The thickness of the side-entering type backlight module is reduced, and the thin design of the side-entering type backlight module is facilitated. The side-entering type backlight module comprises a light guide plate which includes an upper surface for light out, and a lower surface opposite to the upper surface. The lower surface is provided with a refraction coating layer. A refractive index of the refraction coating layer is less than the refractive index of the light guide plate. A reflection coating layer is arranged on a surface of the refraction coating layer far from the light guide plate, and is used for reflecting the light on the reflection coating layer. The side-entering type backlight module is used for the display device.
Owner:BOE TECH GRP CO LTD +1
Backlight module and display device
ActiveCN104832837AGuaranteed brightnessGuaranteed efficiencyNon-linear opticsReflectorsLight guideDisplay device
The invention provides a backlight module. The backlight module comprises a rubber frame, a light guide plate, a light-reflecting sheet, a lamp source and an optical film, wherein the optical film and the light guide plate are sequentially overlapped on the light-reflecting sheet; the rubber frame is wound around the peripheries of the light-reflecting sheet, the light guide plate and the optical film; the backlight module also comprises a radiating plate; the lamp source comprises a lamp strip circuit board and a light-emitting body and is positioned between the light-incidence surface of the light guide plate and the rubber frame; the light-reflecting sheet and the lamp strip circuit board are arranged on the radiating plate and are positioned on the same plane; a part of the lamp strip circuit board is clamped by the light guide plate and the radiating plate. The invention also discloses a display device.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Image processing method and image processing apparatus
InactiveUS20060093235A1Guaranteed brightnessDetection of defectImage enhancementImage analysisImaging processingFilter effect
Low-pass filtering is applied only to the borders of an original mage to reduce the noise in the borders of image, thereby preventing errors in extrapolation. Then, an extended region is provided around the image by extrapolation, thereby eliminating the need for border processing in the borders of the image when performing the final low-pass filtering. Finally, low-pass filtering is applied to the regions where the original image exists. Thus, a filtering effect can be obtained in which the regions nearer to the center of the image and the border regions of the image have the same characteristics.
Owner:PANASONIC CORP
Backlight adjustment method and device of intelligent display device
ActiveCN107689215APrevent Saturation DistortionGuaranteed brightnessStatic indicating devicesImaging qualityLevel of detail
The embodiment of the invention provides a backlight adjustment method and device of an intelligent display device. The intelligent display device has multiple screen areas. The backlight adjustment method comprises the steps that when a current frame of image is output in the multiple screen areas, the lightness characteristic values of all the screen areas are acquired; according to a preset backlight threshold interval to which the lightness characteristic value of the current screen area belong, a corresponding backlight value is determined; according to the backlight values of all the screen areas, a variance characteristic value of the current frame of image is determined; according to the backlight values and the variance characteristic values, corresponding compensation values aredetermined; the backlight lightness of the current screen area is adjusted by adopting the backlight values, and display of a next frame of image is adjusted by adopting the compensation values. According to the embodiment, image saturation distortion can be prevented, the picture lightness can be guaranteed, the permeability and detail layer of the display picture can be improved, and the image quality can be improved more precisely according to different picture contents.
Owner:HISENSE VISUAL TECH CO LTD
Light source output control method and system, and laser projection device
The invention discloses a light source output control method, comprising: non-coaxially arranging a first color wheel and a second color wheel which are respectively provided with a first mark and a second mark, and synchronizing the first color wheel and the second color wheel according to an obtained first set of induction signals of a first synchronous mark and a second synchronous mark; and obtaining second induction signals from the output light path of the second color wheel, and synchronizing the first color wheel and the second color wheel again according to the second induction signals, wherein the second induction signals are voltage waveform signals corresponding to different colors, and sequentially output three primary colors when passing the second color wheel. Accordingly, the method can synchronize the two color wheels accurately, eliminate color mixing in outputting the second color wheel, improve the homogeneous light purity and brightness of the three primary colors, and provide a high quality lighting light source. The invention also provides a control system corresponding to the light source output control method, and a laser projection device using the control system and method.
Owner:QINGDAO HISENSE LASER DISPLAY CO LTD
Screen brightness setting method, mobile terminal and computer readable storage medium
InactiveCN107566635AReduce intensityGuaranteed brightnessSubstation equipmentLight sensingComputer terminal
Owner:NUBIA TECHNOLOGY CO LTD
Automatic traceless fusion welding technology of thin-wall stainless steel clean pipeline
The invention discloses an automatic traceless fusion welding technology of a thin-wall stainless steel clean pipeline. The technology comprises the following steps of: step 1, treating a welding port: milling pipe end welding surfaces of two welded pipeline segments into planes; step 2: assembling welded junctions; step 3: carrying out point welding; step 4: carrying out fusion welding: carrying out fusion welding on the two pipeline segments by adopting an argon tungsten-arc welding machine, wherein the fusion welding process comprises the following steps of: introducing a protective gas before welding, welding the two welded pipeline segments by adopting the argon tungsten-arc welding machine, and introducing argon continuously during the welding process and introducing a protective gas continuously after welding; and step 5: sealing and protecting after welding. The automatic traceless fusion welding technology of the thin-wall stainless steel clean pipeline provided by the invention is reasonable in design, is simple and convenient to operate, is convenient to achieve, has a good pipeline cleanness control effect, is high in welding quality, and can effectively solve the problems of high labor intensity, low efficiency, high production cost, severe welding junction oxidation, poor formation inside and outside a welding line, difficulty in controlling cleanness in pipelines, poor cleanness control effect and the like in an existing welding method.
Owner:SCEGC EQUIP INSTALLATION GRP COMPANY
Method of manufacturing antiglare film and method of manufacturing mold thereof
InactiveCN102009329AReduce contrastLow anti-glareOptical articlesMetallic material coating processesTectorial membraneCopper plating
The present invention provides a method of manufacturing a mold for manufacturing an antiglare film with a fine convex-concave shape. The method comprises the following steps: a plating step of implementing copper plating or nickel plating on a surface of a substrate for the mold, a mirror surface processing step of implementing at least one selected from cutting and grinding on the surface which is implemented with copper plating or nickel plating through the plating step for forming a mirror surface with a surface roughness smaller than 0.1 mu m, a fine dent part forming step of forming a plurality of fine dent parts on the surface after mirror surface processing through cutting, and a protective film forming process of forming a protective film on the surface with the formed fine dent parts, wherein the cutting to the plurality of fine dent parts is performed through a cutting tool in the fine dent part forming step. The cutting tool moves linearly relatively to a direction which is parallel with a surface of the substrate for the mold and performs fine reciprocation in a direction that is vertical with the surface of the substrate for the mold, so the average most adjacent distance between the fine dent parts being cut, and the cutting depth satisfy a certain condition.
Owner:SUMITOMO CHEM CO LTD
Method and device for automatically adjusting white balance of LCD (Liquid Crystal Display)
InactiveCN103501430AGuaranteed brightnessImprove the efficiency of automatic white balanceColor signal processing circuitsTelevision systemsComputer scienceLCD television
The invention provides a method and a device for automatically adjusting the white balance of an LCD (Liquid Crystal Display). The method comprises the steps of displaying a test picture according to a green gain value which is preset; measuring the test picture and obtaining color temperature coordinate values of the test picture; adjusting a red gain value and / or a blue gain value according to the color temperature coordinate values. According to the technical scheme provided by the invention, the brightness of an LCD television can be increased, and the energy efficiency of the LCD television can be further increased.
Owner:BOE TECH GRP CO LTD +1
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