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252results about How to "Keep brightness" patented technology
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Automated shade control method and system
ActiveUS7417397B2Keep brightnessReduce brightnessLight dependant control systemsDC motor speed/torque controlRadiometerSolar angle
This invention generally relates to automated shade systems that employ one or more algorithms to provide appropriate solar protection from direct solar penetration; reduce solar heat gain; reduce radiant surface temperatures; control penetration of the solar ray, optimize the interior natural daylighting of a structure and optimize the efficiency of interior lighting systems. The invention additionally comprises a motorized window covering, radiometers, and a central control system that uses algorithms to optimize the interior lighting of a structure. These algorithms include information such as: geodesic coordinates of a building; solar position; solar angle solar radiation; solar penetration angles; solar intensity; the measured brightness and veiling glare across a surface; time, solar altitude, solar azimuth, detected sky conditions, ASHRAE sky models, sunrise and sunset times, surface orientations of windows, incidence angles of the sun striking windows, window covering positions, minimum BTU load and solar heat gain.
Owner:MECHOSHADE SYST LLC
White point adjusting method, color image processing method, white point adjusting apparatus and liquid crystal display device
InactiveUS6862012B1Highly accurate convergenceImprove accuracyColor signal processing circuitsCathode-ray tube indicatorsLiquid-crystal displayComputer graphics (images)
A white point adjusting apparatus is provided to adjust an achromatic color level for an input video signal including a plurality of color signals, and display an adjusted image on a liquid crystal module. This adjusting apparatus comprises: a first table for setting a white point by deciding an offset quantity of at least one color signal from a highest gray level for each color temperature; a second table for setting an offset quantity of the color signal to converge a halftone white point for each color temperature set by the first table; and a white point adjusting unit for adding the offset quantities set by the first and second tables and to the input video signal.
Owner:AU OPTRONICS CORP
Semiconductor light emitting device and method for producing the same
InactiveUS20100140648A1Increase brightnessInhibitionSemiconductor/solid-state device testing/measurementSolid-state devicesHigh luminanceLuminous flux
A semiconductor light emitting device can be configured to maintain high luminance and to suppress the possibility of the occurrence of wire breakage with high quality and reliability. A method for producing such a semiconductor light emitting device with a high process yield is also disclosed. The semiconductor light emitting device can include a sealing member into which a reflective filler can be mixed in such an amount (concentration) range that luminous flux with a predetermined amount can be maintained and the possibility of the occurrence of wire breakage can be lowered. Various sealing members containing a reflective filler with a plurality of concentrations within this range can be prepared in advance. By taking advantage of the phenomenon where chromaticity shifts depending on the concentration of the reflective filler, a semiconductor light emitting device with less chromaticity variation can be produced utilizing a sealing member with a particular concentration in accordance with the chromaticity of a particular semiconductor light emitting element that is used and which may be varied during fabrication.
Owner:STANLEY ELECTRIC CO LTD
Illumination control system
InactiveUS20090212718A1Increase freedomSuitable environmentElectrical apparatusElectric light circuit arrangementLight equipmentCommunication unit
An illumination control system includes lighting apparatuses connected to a communications line and a number of functional units of plural kinds functioning to detect information from ambient environments of the lighting apparatuses. Each lighting apparatus includes a lamp, an illumination circuit, a communication unit, a control unit, and a unit attaching part to which the functional unit is detachably attached. Each lighting apparatus belongs to one or more of plural groups corresponding to the functional units, the groups being operated based on information detected by the respective functional units. A functional unit having a detecting function corresponding to an operation of each group is attached to each unit attaching part of at least one lighting apparatus of each group, and each communication unit of the at least one lighting apparatus sends the control signal including information detected by the corresponding functional unit to another lighting apparatus in the same group.
Owner:MATSUSHITA ELECTRIC WORKS LTD
Light source device, projector device, monitor device, and lighting device
ActiveUS20080165815A1Prevent rapid drop in outputAvoid temperature riseLaser optical resonator constructionColor television detailsEngineeringSemiconductor
The controller 170 controls the output power of the semiconductor laser device 100a depending on the temperature of the semiconductor laser device 100a acquired by the temperature sensor 130. The controller 170 references the correspondence table 510 when the sensor temperature Ts is obtained, obtains the output power PWs corresponding to the sensor temperature Ts, and controls the power supply driving circuit 150a so that the output power per unit time of the semiconductor laser device 100a will be the output power PWs. Thus increase in temperature of the semiconductor laser device is able to be prevented through reducing the output power by controlling the amount of power supplied to the semiconductor laser device. As a result, it is possible to prevent reductions in the service life of the semiconductor laser device, even when there is a failure in a cooling device that cools the semiconductor laser device, and even when the device is used in a high temperature environment not envisioned at the time of manufacturing.
Owner:SEIKO EPSON CORP
Sectional light emitting diode backlight unit
InactiveUS20070103939A1Small sizeSimplify the packaging processOptical light guidesNon-linear opticsEngineeringLight-emitting diode
A sectional light emitting diode backlight unit comprising a circuit board, a frame disposed on the circuit board, a plurality of light emitting diode dies disposed on the circuit board inside the frame, each light emitting diode die being electrically connected to a circuit on the circuit board, a plurality of connecting pads disposed on a first side of the circuit board outside the frame, the connecting pads being electrically connected to a circuit on the circuit board, and an encapsulating material positioned on the circuit board inside the frame to cover the light emitting diode dies; wherein at least one second side of the circuit board has a connection means for connecting to another sectional light emitting diode backlight unit.
Owner:LIGHTHOUSE TECH
Continuous control of LED light beam position and focus based on selection and intensity control
InactiveUS20100264833A1Simple and accurate measurementLow costElectronic switchingElectric light circuit arrangementLight beamLuminous flux
A lighting system comprising a plurality of light units, wherein said light units are arranged in an array, wherein the light beams of substantially each pair of adjacent light units overlap each other, and wherein the light system comprises a light control means which is arranged to adjust the intensity of each one of said plurality of light units individually, wherein said light control means is further arranged to maintain the total combined luminous flux incident of said plurality of light units on a predefined imaginary flat surface substantially equal when adapting the intensity of the individual light units.
Owner:LITE ON TECH CORP
Vehicular lamp
InactiveUS7775697B2Reduce directivityEfficient introductionNon-electric lightingLighting support devicesLight guideEngineering
Owner:KOITO MFG CO LTD
Display device and method of controlling the same
ActiveUS20160104438A1High luminance regionKeep brightnessImage enhancementTelevision system detailsColor toneLow dynamic range
A display device, including a content receiving unit configured to receive a high dynamic range image, an image processing unit configured to detect a first region whose luminance value is equal to or greater than a reference luminance value within the high dynamic range image and perform tone mapping on an image of the first region based on feature information of the image of the first region, and a display unit configured to display a low dynamic range image on which the tone mapping is performed.
Owner:SAMSUNG ELECTRONICS CO LTD
Transmitter, receiver for visible light communication and method using the same
ActiveUS20110069965A1Eliminate flickeringReduce run lengthClose-range type systemsEffect lightSource code
A visible light wireless communication receiver includes: a source code recognizing unit that receives a source bit stream and recognizes the source bit stream as source codes of a unit of a first number of bits; and a line coding unit that encodes each of the source codes into an encoding code of a unit of a second number of bits, the second number being larger than the first number. In particular, in the encoding code, the number of bits corresponding to 1 is the same as the number of bits corresponding to 0. Therefore, the change in brightness of lighting may be minimized in the visible light wireless communication.
Owner:ELECTRONICS & TELECOMM RES INST
Method and apparatus for driving light emitting elements for projection of images
ActiveUS20100171771A1Simple processStable image color qualityElectrical apparatusCathode-ray tube indicatorsProjection imageEffect light
A light source sequentially emits lights generated by at least three light emitting elements each emitting a different primary color to generate an image. Each light emitting element has a duty cycle in a lighting period, which may be an image frame period. A sequence scheme is provided for alternatingly driving different ones of the light emitting elements. The light emitting elements are driven in accordance with the sequence scheme at least two times in the lighting period, while maintaining the duty cycle for each light emitting element. In the sequence scheme, at least one light emitting element having the highest temperature sensitivity of all light emitting elements is driven more times than another one.
Owner:SIGNIFY HLDG BV
Gate driver circuit, display panel, and display device
ActiveUS20200082768A1Decrease in luminanceImprove luminanceStatic indicating devicesDriver circuitDisplay device
A gate driver circuit, a display panel, and a display device. A number of emission start signals, with at least one a delay time, a pulse width, or a combination thereof, are supplied in a frame period in which display driving is performed at a low driving frequency. This decreases a degree by which luminance appearing in the frame period is reduced, or changes characteristics of frequency components of luminance, thereby preventing flicker from being observed. The display driving is performed at the low driving frequency reduces power consumption, and is performed at a lower driving frequency to improve the efficiency of the display device.
Owner:LG DISPLAY CO LTD
Display apparatus and method for controlling the same
ActiveUS20160365051A1Increase backlight brightnessKeep brightnessStatic indicating devicesEngineeringPixel based
A display apparatus includes a display panel including pixels arranged at an intersection of data lines and gate lines, a source driver IC configured to be disposed on one side surface of the display panel to apply a data voltage to the data lines, a gate driver IC configured to be disposed on any one of two side surfaces which are adjacent to the one side surface of the display panel to apply a gate driving voltage to the gate lines, and a controller configured to receive feedback on a gate driving voltage applied to at least one pixel, detect a distortion of the gate driving voltage applied to the pixel based on the feedback, adjust a level of the gate driving voltage applied to the gate lines to compensate for the distortion of the gate driving voltage, and apply the adjusted gate driving voltage to the gate lines.
Owner:SAMSUNG ELECTRONICS CO LTD
Projection screen and projection system comprising the same
InactiveUS20050030617A1Light reflection efficiencyMinimize impactLiquid crystal compositionsProjectorsLiquid crystallineVisibility
The present invention provides a projection screen capable of sharply displaying an image by minimizing the influence of phase differences that are produced when light is slantingly incident on a polarized-light selective reflection layer having a cholesteric liquid crystalline structure, and of providing high image visibility. A projection screen includes: a polarized-light selective reflection layer having a cholesteric liquid crystalline structure, capable of selectively reflecting a specific polarized-light component; and a substrate that supports the polarized-light selective reflection layer. The cholesteric liquid crystalline structure of the polarized-light selective reflection layer contains a plurality of helical-structure parts that are different in direction of helical axis, and, owing to structural non-uniformity in the cholesteric liquid crystalline structure, the polarized-light selective reflection layer diffuses light (imaging light) that is selectively reflected. In the cholesteric liquid crystalline structure of the polarized-light selective reflection layer, the helical pitch on the side farther from the imaging-light-incident side is longer than that on the side closer to the imaging-light-incident side.
Owner:DAI NIPPON PRINTING CO LTD
Liquid crystal display device, substrate assembly for liquid crystal display device, and electronic apparatus having a substantially equivalent display quality in both transmissive and reflective display modes
InactiveUS7030946B2Reduce light transmittanceAdd display modeSolid-state devicesOriginals for photomechanical treatmentLiquid-crystal displayElectron
A transflective liquid crystal display device comprising a pair of substrates; a liquid crystal layer between the substrates; reflective films are provided on an internal surface of a lower substrate which reflects light incident from an upper substrate; color filters provided above the reflective films, each containing a plurality of color layers which have different colors and are disposed to correspond to dots forming a display region; and lighting means. The dots have a reflective region in which the reflective film is present and a transmissive region in which the reflective film is not present. In addition, the color filters have opening portions that overlap the reflective film in each dot. Since the non-color regions are provided in the color filter corresponding to the reflective films, light used in reflective display mode is sufficiently secured and the chroma in a transmissive display mode can be maintained.
Owner:138 EAST LCD ADVANCEMENTS LTD
High luminance multicolor illumination devices and related methods and projection system using the same
ActiveUS20130100639A1Improve coloring abilityIncreasing spectrum widthProjectorsColor photographyProjection systemNarrow band
An illumination device and a projection system using the same. The illumination device includes two or more color channels each including one or more light sources for generating a color light. At least one of the color channels includes light sources of a first type for generating a first (narrow band) light and light sources of a second type for generating a second light. The dominant wavelengths of the first and second lights are within 50 nm of each other, and the width of the combined spectrum (sum of normalized spectra of the first and second lights) is greater than the width of the spectrum of the first light by at least 10 nm. A wavelength-based light combiner is used to combine the color lights from the color channels into a combined light
Owner:APPOTRONICS CORP LTD
Processing device and processing method of high dynamic contrast for liquid crystal display apparatus
ActiveUS20090079688A1Increase contrastQuality improvementAnalogue conversionCathode-ray tube indicatorsCapacitanceDynamic contrast
This invention relates to a processing device and processing method of high dynamic contrast for liquid crystal display apparatus, the processing device comprises a receiver, an inverter, and a source driving IC connected with a central processing module. The processing method includes: performing a histogram statistical process on received low voltage Differential Signaling data; obtaining a backlight source dimming coefficient and a Gamma reference voltage parameter of the same frame of picture according to the result of the histogram statistical process. controlling the brightness of the backlight source according to said backlight source dimming coefficient; controlling the voltage of the pixel capacitor on the liquid crystal panel according to said Gamma reference voltage parameter. This invention respectively adjusts the brightness of the backlight source and the voltage of the pixel capacitor of the liquid crystal panel simultaneously, and hence the dynamic contrast of the picture is increased, the problems of lower contrast and flicker of TFT liquid crystal display apparatus are ameliorated, and the power consumption of the backlight source is saved.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD
Display device and driving method thereof
InactiveUS20110205206A1Maintain luminanceKeep brightnessCathode-ray tube indicatorsInput/output processes for data processingSignal linesVoltage
A display device includes a display unit including a plurality of scan lines, a plurality of data lines to which a plurality of compensation data signals are transmitted, a plurality of light emitting signal lines, and a plurality of pixels respectively connected to the plurality of scan lines, the plurality of data lines, and the plurality of light emitting signal lines, and a data driver generating a data voltage corresponding to a image data signal, and converting the data voltage to the compensation data signal. The data driver includes a compensator generating the compensation data signal in accordance with a feedback voltage. The feedback voltage is determined by a degree of deterioration associated with each pixel, and increases with an increasing deterioration degree of the pixel.
Owner:SAMSUNG DISPLAY CO LTD
LED display apparatus and LED pixel error detection method thereof
ActiveUS20160078800A1Efficient error detection methodKeep brightnessElectrical apparatusStatic indicating devicesLED displayEngineering
A light emitting diode (LED) display apparatus, including: a plurality of LED lines including a plurality of LEDs; a plurality of switches connected to respective LED lines among the plurality of LED lines; a controller configured to sequentially supply power to the plurality of LED lines by sequentially turning on and off the plurality of switches; and an LED driver configured to detect an error state of an LED from the plurality of LEDs by estimating current flowing through the plurality of LED lines, and to provide the controller with a result of the detection.
Owner:SAMSUNG ELECTRONICS CO LTD
Electrooptical device and electronic apparatus
InactiveUS20080055500A1Keep brightnessSize front region with a mixed display is reduced or eliminatedStatic indicating devicesSteroscopic systemsComputer graphics (images)Electron
An electrooptical device which simultaneously displays a first and second image in different directions. The electrooptical device includes a display panel including a plurality of pixel rows. Each pixel row includes first pixels for displaying the first image, first light-shielding portions, second pixels for displaying the second image, and second light-shielding portions which are wider than the first light-shielding portions. The electrooptical device also includes a light-transmissive substrate provided parallel to the display panel, and a light-shielding barrier layer provided on the substrate which includes apertures that align with the second light-shielding portions when viewed from a direction that is normal to the display panel.
Owner:JAPAN DISPLAY WEST
Electronic endoscope apparatus
InactiveUS7029437B2Increase brightnessKeep brightnessSurgeryEndoscopesEndoscopeBrightness perception
An electronic endoscope apparatus has a light source, a pixel luminance detector, a division setter, an average block luminance calculator, a peak-luminance determiner, a representative luminance calculator, and a brightness adjuster. The division setter divides the subject image into a plurality of blocks composed of given pixels. The average block luminance calculator calculates a plurality of average block-luminance-levels. The peak-luminance determiner compares the average block-luminance-levels with each other in order to determine a substantially maximum average block-luminance-level from the plurality of average block-luminance-levels as a peak luminance level. The representative luminance calculator calculates a representative luminance level indicating a brightness of the subject image. The brightness adjuster adjusts the brightness of the subject image in accordance with the representative luminance level.
Owner:ASAHI KOGAKU KOGYO KK
Lens array and image display device incorporating the same
An image display device includes a light source, an imaging element to form an image with a light beam from the light source, and a lens array illuminated with the light beam forming the image for image display, in which lenses are arranged closely to each other. In which in the lens array a curvature radius of a surface of a border of neighboring lenses is set to be smaller than a wavelength of the light beam.
Owner:RICOH KK
Display device
InactiveUS7091938B2Slow changeConstant brightnessTransistorStatic indicating devicesDisplay deviceReverse bias
An EL display device free of a dispersion in the brightness caused by deterioration in the EL elements. The display device uses pixels of the current-controlled type to suppress a change in the current flowing through the EL elements caused by the deterioration in the EL elements. The display device further uses elements capable of short-circuiting or opening three nodes simultaneously. No bank is used for dividing the EL layers into separate colors. EL elements of the mixed junction type are used. A reverse bias voltage is applied to the EL elements at regular intervals. The display device suppresses dispersion in the brightness caused by the deterioration in the EL elements.
Owner:SEMICON ENERGY LAB CO LTD
Active matrix organic electroluminescence display device
ActiveUS6992325B2Keep brightnessStable maintenanceTransistorSemiconductor/solid-state device detailsActive matrixDisplay device
An active matrix organic electroluminescence display device capable of maintaining the brightness of the organic light emitting diode. The active matrix organic electroluminescence display device comprises a thin film transistor and an organic light emitting diode. By improving the structure of the passivation layer of the thin film transistor to reduce the leakage current occurring in the TFT, the brightness of the organic light emitting diode can be stably maintained.
Owner:AU OPTRONICS CORP
Lighting Device
ActiveUS20100237805A1Reduce lightKeep brightnessPlanar light sourcesElectrical apparatusEffect lightEngineering
To provide a lighting device in which the luminance of an EL element is maintained even when the EL element deteriorates so that degradation of the lighting device is reduced, the lighting device includes a surface light source portion including an organic EL element, and a control circuit portion provided in a base portion. The control circuit portion counts a lighting time of the organic EL element and controls the luminance of the organic EL element in accordance with the lighting time. Accordingly, the lighting device in which the luminance of an EL element is maintained regardless of degradation of the EL element so that degradation of the lighting device is reduced can be provided.
Owner:SEMICON ENERGY LAB CO LTD
Method and system for differentially and regularly modifying a digital image by pixel
ActiveUS7379561B2Improve luminosityKeep brightnessImage enhancementCharacter and pattern recognitionPattern recognitionComputer graphics (images)
Owner:LENS CORRECTION TECH CORP
Method of exposure control and image pickup apparatus
InactiveUS20090015707A1Amount of changeSuppress manufacturing costTelevision system detailsColor television detailsCamera lensExposure control
A method of exposure control in an image pickup apparatus includes determining whether a zoom lens has been moved, determining whether an F value obtained from information about focal position of a focus lens linked to movement of the zoom lens has changed, estimating a variation in the focus luminance before and after a change in the F value from the F values before and after the change when the F value has been changed, changing the shutter speed determined according to a focus luminance before the change to a shutter speed determined according to the focus luminance after the change, based on the estimated variation in the focus luminance, and changing a frame rate determined according to the focus luminance before the change to a frame rate determined according to a focus luminance after the change according to the changed shutter speed.
Owner:ELMO CO LTD
Rigid endoscope
ActiveUS7724430B2Low costShorten the counting processSurgeryEndoscopesImage transferRefractive index
Owner:OLYMPUS CORP
Hyperplaty clays and their use in paper coating and filling, methods for making same, and paper products having improved brightness
InactiveUS20060009566A1High crystallinityLight scattering is detrimentalPigmenting treatmentPaper coatingOptical propertyPulp and paper industry
Owner:IMERYS USA INC
Image display apparatus
InactiveUS20050116609A1Constant chromaticityImprove color uniformityMechanical apparatusDischarge tube luminescnet screensLight sourceComputer graphics (images)
An image display apparatus is provided that enables the chromaticity of a display screen of a display apparatus to be adjusted to the chromaticity desired by a user. The image display apparatus is formed by a backlight unit that is provided with a plurality of light sources and by an image display panel that is placed at a front surface of the backlight unit. The image display apparatus performs a monochrome display. In the image display apparatus, the light sources have at least three different types of luminescent colors that surround a target color on a chromaticity diagram.
Owner:MITSUBISHI ELECTRIC CORP +1
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