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293results about How to "Little noise" patented technology
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High performance imaging system for diffuse optical tomography and associated method of use
ActiveUS7983740B2High bandwidthImprove performanceDiagnostics using tomographySensorsOptical tomographyImaging quality
A high performance imaging system for diffuse optical tomography is disclosed. A dense grid utilizing sources, e.g., light emitting diodes (“LEDs”), that achieve high performance at high speed with a high dynamic range and low inter-channel crosstalk are complemented by a system of discrete, isolated receivers, e.g., avalanche photodiodes (“APDs”). The source channels have dedicated reconfigurable encoding control signals, and the detector channels have reconfigurable decoding, allowing maximum flexibility and optimal mixtures of frequency and time encoding and decoding. Each detector channel is analyzed by dedicated, isolated, high-bandwidth receiver circuitry so that no channel gain switching is necessary. The resulting improvements to DOT system performance, e.g., increased dynamic range and decreased crosstalk, enable higher density imaging arrays and provide significantly enhanced DOT image quality. A processor can be utilized to provide sophisticated three dimensional modeling as well as noise reduction.
Owner:WASHINGTON UNIV IN SAINT LOUIS
Method of and apparatus for electro-optical distance measurement
InactiveUS6917415B2Low costReduce frequencyOptical rangefindersElectromagnetic wave reradiationLocal oscillatorPulse sequence
A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode (1) is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train (10) is detected by a light detector (6), which generates, in response to the detection of a measurement pulse train, a first photo-current component, a smaller portion of the intensity modulated pulse train is branched out as a reference pulse train and, after passing a known reference path, is also detected by the light detector (6), which generates in response to this detection a second photo current component, and the light detector converts the measurement pulses, together with a mixer pulse train generated by a local oscillator, into a comparatively low-frequency IF-region that determines, after a corresponding conversion, the measured distance.
Owner:HILTI AG +1
Biometric information input apparatus
InactiveUS8031916B2Little noiseLow costElectric signal transmission systemsImage analysisRelative displacementEngineering
The biometric information input apparatus comprises a fingerprint sensor which detects biometric information, and moisture absorbing units and which are arranged adjacent to the fingerprint sensor and absorb moisture. The moisture absorbing units and have a groove structure which generates a capillary phenomenon. The fingerprint sensor is of the sweep type which scans biometric information through relative displacement with the finger, and is formed in parallel with the direction of relative displacement between the groove structure and the finger. The groove structure has a width smaller than the pitch of the ridges of an average fingerprint.
Owner:FUJITSU LTD
Garbage storage device
Owner:LAKE TECH LTD
Garbage storage device
Owner:LAKE TECH
Method for driving liquid crystal display device
ActiveUS20100156955A1Improve image qualityReduce power consumptionTelevision system detailsPicture reproducers using cathode ray tubesImage resolutionLiquid-crystal display
A low-resolution image is displayed at high resolution and power consumption is reduced. Resolution is made higher by super-resolution processing. Then, display is performed with the luminance of a backlight controlled by local dimming after the super-resolution processing. By controlling the luminance of the backlight, power consumption can be reduced. Further, by performing the local dimming after the super-resolution processing, accurate display can be performed.
Owner:SEMICON ENERGY LAB CO LTD
Method, apparatus, and program for encoding image, method, apparatus, and program for decoding image, and image processing system
ActiveUS20150189329A1Error minimizationReduce noiseCharacter and pattern recognitionDigital video signal modificationPattern recognitionImaging processing
Provided is an image encoding device including an encoding unit that encodes a down-sampling image obtained by performing down-sampling of a color difference signal; a decoding unit that decodes the encoded encoding image; and a filter information generation unit that performs up-sampling of a color difference signal of the decoded decoding image, filters the color difference signal of the decoded image by using the up-sampled color difference signal of the decoded image and a luminance signal as reference signals, and acquires filter information related to the filtering.
Owner:SAMSUNG ELECTRONICS CO LTD
Method of and apparatus for electro-optical distance measurement
InactiveUS20040085526A1Improve reliabilityEasy to measureOptical rangefindersElectromagnetic wave reradiationLocal oscillatorPulse sequence
A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode (1) is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train (10) is detected by a light detector (6), which generates, in response to the detection of a measurement pulse train, a first photo-current component, a smaller portion of the intensity modulated pulse train is branched out as a reference pulse train and, after passing a known reference path, is also detected by the light detector (6), which generates in response to this detection a second photo current component, and the light detector converts the measurement pulses, together with a mixer pulse train generated by a local oscillator, into a comparatively low-frequency IF-region that determines, after a corresponding conversion, the measured distance.
Owner:HILTI AG +1
Radiation imaging system and driving method thereof
InactiveUS7476027B2Little noiseImprove signal-to-noise ratioX-ray apparatusMaterial analysis by transmitting radiationImaging processingRadiation imaging
When a gain correction is performed for the radiographed object image, the acquisition of the object image having a high grade quality and no artifact is realized. For that purpose, an image storing unit is provided for storing an image for correction radiographed based on conditions set with the table in a state in which no object exists to each operation modes of the plurality of operation modes; and an image processing unit is provided for performing a gain correction processing of the radiographed object image and performs the gain correction processing of the radiographed object image obtained based on the conditions set in the table of the operation mode selected by the selecting unit in a state in which the object exists using a corresponding image for correction extracted from the image storage unit based on the operation mode selected by the selecting unit.
Owner:CANON KK
Linear oscillator
InactiveUS6958553B2Reduce vibrationLittle noiseMechanical energy handlingMetal working apparatusResonanceReciprocating motion
Owner:HEWLETT PACKARD DEV CO LP
Method and apparatus for tissue equivalent solid state microdosimetry
ActiveUS8421022B2Little noiseReduce errorsX-ray/infra-red processesDosimetersSemiconductor detectorP–n junction
A microdosimeter, comprising an array of three-dimensional p-n junction semiconductor detectors, each providing a sensitive volume-target and a tissue equivalent medium for generating secondary charged particles. The array is manufactured from a semiconductor on insulator wafer and the detectors are located to detect secondary charged particles generated in the tissue equivalent medium.
Owner:UNIV OF WOLLONGONG
Radiation imaging system and driving method thereof
InactiveUS20070291904A1Fast frame rateIncrease the number ofX-ray apparatusMaterial analysis by transmitting radiationImaging processingRadiation imaging
When a gain correction is performed for the radiographed object image, the acquisition of the object image having a high grade quality and no artifact is realized. For that purpose, an image storing unit is provided for storing an image for correction radiographed based on conditions set with the table in a state in which no object exists to each operation modes of the plurality of operation modes; and an image processing unit is provided for performing a gain correction processing of the radiographed object image and performs the gain correction processing of the radiographed object image obtained based on the conditions set in the table of the operation mode selected by the selecting unit in a state in which the object exists using a corresponding image for correction extracted from the image storage unit based on the operation mode selected by the selecting unit.
Owner:CANON KK
Low speed electric vehicle mobile advertising system
InactiveUS7287349B1Improve the level ofLittle noiseMobile visual advertisingMonocoque constructionsLow speedDisplay device
This system comprises a small advertising assembly that can be easily mounted onto the bed of a Low-Speed Electric Vehicle. The assembly includes an advertising display and a frame. The system allows for the advertising display to be attached in multiple positions such as: upright for viewing and stowed flat for transport. The advertising display has an internal light source and removable translucent advertising panels. This Low Speed Electric Vehicle Mobile Advertising System provides an advertising system that is mobile for both on- and off-road conditions, generates little or no noise or air pollution, and operates at pedestrian-friendly speeds to promote maximum exposure of the message being advertised.
Owner:AUTOFLEX
Display device and imaging method
InactiveUS7545371B2Improve display qualityLittle noiseTelevision system detailsDigital data processing detailsDisplay deviceImage capture
Owner:JAPAN DISPLAY CENTRAL CO LTD
Hinge unit with simultaneous rotatable axles
InactiveUS20150160695A1Little noiseNoise is generatedWing accessoriesPin hingesEngineeringMechanical engineering
Owner:YUAN DENG METALS IND
Built-in swing mechanism of rotary fan
ActiveUS20080304969A1Increase wind outlet surfaceImprove applicabilityPropellersPump componentsDrive motorSpherical form
The present invention provides an improved built-in swing mechanism of a rotary fan. The mechanism includes a ball-and-socket support frame, arranged onto front wall of the main casing corresponding to the axle center of a drive motor and provided with a spherical supporting surface and a through-hole. A spherical abut seat is fastened at a front end of the drive motor is provided with a spherical abut surface that couples with the spherical supporting surface. A punch hole is placed at the center of spherical abut surface for the penetration of the axle center. A crank linkage element is assembled between rear end of the drive motor and the rear wall of the main casing. The first end of the crank linkage element can be driven to enable the oscillation of the second end. The second end is assembled at a rotary pivot corresponding to the main casing.
Owner:KING JIH ENTERPRISE CORP
Method of detecting damage to an engine bearing
ActiveUS20080223135A1Mitigate such drawbackLess polluted by noiseVibration measurement in solidsMachine part testingLow speedFrequency spectrum
The invention relates to a method of detecting damage in a bearing supporting at least one rotary shaft of an engine in rotation, the method consisting in: defining a measurement period corresponding to a range of speeds of rotation of the shaft during renewable activity at low speeds of operation of the engine; acquiring over the entire measurement period a vibratory signal representative of acceleration of components of the engine; sampling the vibratory signal as a function of the speed of rotation of the shaft during the measurement period; transforming the sampled vibratory signal into a frequency signal to obtain frequency spectrum lines as a function of the speed of rotation of the shaft; calculating the mean of the amplitudes of the spectrum lines; determining amplitude peaks around multiples of the theoretical frequency of a damaged roller; calculating the ratio between each amplitude peak and the amplitude level determined for a sound bearing; and comparing the ratio that is obtained with at least one predetermined damage threshold.
Owner:SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
Electromagnetic machine with a deformable membrane
ActiveUS7323961B2Little noiseLess noisyFlexible member pumpsMechanical energy handlingMagnetic currentEngineering
An electromagnetic machine with a deformable membrane (1) includes at least one fixed part which can direct a magnetic flow interacting with at least one moveable part (12) having regions which are magnetically polarized in order to ensure that alternative displacement of the moveable part (12) corresponds to an alternative variation of the magnetic flow in the fixed part, the moveable part (12) being kinetically linked to an edge (5) of the membrane (1) such that an undulation of the membrane (1) corresponds to an alternative displacement of the moveable part (12), wherein the fixed part and moveable part (12) are arranged in such a way that the moveable part (12) can be displaced in a rotating manner.
Owner:AMS R&D
Receiver and receiving method
ActiveUS20060023881A1Little noiseTelevision system detailsDigital data processing detailsComputer scienceAudio frequency
When a channel which is not scrambled is selected, an error occurs in a digital stream processed in a CA processing module, which causes noises to occur in video and audio signals to be viewed. If a FAT channel to be received is a channel that is not CA-scrambled, a digital stream is directly supplied from a FAT demodulator to a demultiplexer without passing the digital stream through an external processing module. As a result, no noise occurs in video and audio signals to be viewed because the video and audio signals are not influenced by an error of the digital stream that occurs in the processing module.
Owner:MAXELL HLDG LTD
High Performance Imaging System for Diffuse Optical Tomography and Associated Method of Use
ActiveUS20080154126A1Improve performanceReduce crosstalkMaterial analysis by optical meansDiagnostics using tomographyOptical tomographyImaging quality
A high performance imaging system for diffuse optical tomography is disclosed. A dense grid utilizing sources, e.g., light emitting diodes (“LEDs”), that achieve high performance at high speed with a high dynamic range and low inter-channel crosstalk are complemented by a system of discrete, isolated receivers, e.g., avalanche photodiodes (“APDs”). The source channels have dedicated reconfigurable encoding control signals, and the detector channels have reconfigurable decoding, allowing maximum flexibility and optimal mixtures of frequency and time encoding and decoding. Each detector channel is analyzed by dedicated, isolated, high-bandwidth receiver circuitry so that no channel gain switching is necessary. The resulting improvements to DOT system performance, e.g., increased dynamic range and decreased crosstalk, enable higher density imaging arrays and provide significantly enhanced DOT image quality. A processor can be utilized to provide sophisticated three dimensional modeling as well as noise reduction.
Owner:WASHINGTON UNIV IN SAINT LOUIS
Vertical cavity surface emitting laser diode and process for producing the same
ActiveUS20050286597A1Small divergence angleSmall signal characteristicLaser detailsSemiconductor laser optical deviceVertical-cavity surface-emitting laserLaser light
A vertical cavity surface emitting laser diode includes a lower semiconductor reflector, an active region, an upper semiconductor reflector constituting a resonator with the lower semiconductor reflector, a metallic part being formed on the upper semiconductor reflector, which has a first aperture defining an output region of laser light generated in the active region, and a light confining region being provided between the metallic part and the lower semiconductor reflector, and having a second aperture defining an emission region of the laser light. The upper semiconductor reflector includes a lenticular medium having a convex surface toward the lower semiconductor reflector.
Owner:FUJIFILM BUSINESS INNOVATION CORP
Silencer for drying appliance and silent hair dryer
A silent hair dryer and a silencer for a hair dryer includes at least one casing with an inlet end and an outlet end and enclosing at least one turbine sucking in air via at least one admission orifice upstream of the turbine and expelling it downstream via at least one outlet orifice. The silent hair dryer includes at least one chamber upstream of the admission orifice and an inlet orifice for aspiration of air upstream of the chamber; the diameter of the chamber being greater than the diameter of the admission orifice and the diameter of the inlet orifice, the length and the diameter of the chamber being of such a size so as to define a volume turned as a function of the sound frequencies to be attenuated by the silencer.
Owner:VELECTA PARAMOUNT SA
High resistivity silicon wafer and method for manufacturing the same
ActiveUS20100224968A1Avoid it happening againHigh mechanical strengthPolycrystalline material growthSemiconductor/solid-state device manufacturingDopantCzochralski method
This method for manufacturing a high resistivity silicon wafer includes pulling a single crystal such that the single crystal has a p-type dopant concentration at which a wafer surface resistivity becomes in a range of 0.1 to 10 kΩcm, an oxygen concentration Oi of 5.0×1017 to 20×1017 atoms / cm3 (ASTM F-121, 1979), and either one of a nitrogen concentration of 1.0×1013 to 10×1013 atoms / cm3 (ASTM F-121, 1979) and a carbon concentration of 0.5×1016 to 10×1016 atoms / cm3 or 0.5×1016 to 50×1016 atoms / cm3 (ASTM F-123, 1981) by using a Czochralski method, processing the single crystal into wafers by slicing the single crystal, and subjecting the wafer to an oxygen out-diffusion heat treatment process in a non-oxidizing atmosphere. A peak position of a resistivity serving as a boundary between a p-type region of a wafer surface side and a p / n conversion region of an inner side of a thickness direction is adjusted by the nitrogen concentration or the carbon concentration such that the peak position is set to a boundary depth in a range of 10 to 70 μm from the wafer surface.
Owner:SUMCO CORP
Air cooling generator
InactiveUS7023101B2Improve cooling effectLittle noiseAir coolingPropulsion using engine-driven generatorsImpellerElectric generator
A generator includes a housing, an engine, a first main impeller rotatably mounted in the engine, a first secondary impeller rotatably mounted in the housing and located outside of the engine, a generating body, a second main impeller rotatably mounted in the generating body, and a second secondary impeller rotatably mounted in the housing and located outside of the generating body. Thus, the first secondary impeller and the second secondary impeller can dissipate the heat produced from the engine and the generating body, thereby enhancing the heat dissipation effect of the generator, and thereby increasing the lifetime of the generator.
Owner:WANG WEN CHANG
Method and apparatus for tissue equivalent solid state microdosimetry
ActiveUS20100090118A1Accurate observationLittle noiseX-ray/infra-red processesDosimetersSemiconductor detectorP–n junction
A microdosimeter, comprising an array of three-dimensional p-n junction semiconductor detectors, each providing a sensitive volume-target and a tissue equivalent medium for generating secondary charged particles. The array is manufactured from a semiconductor on insulator wafer and the detectors are located to detect secondary charged particles generated in the tissue equivalent medium.
Owner:UNIV OF WOLLONGONG
Optical system, and optical apparatus
InactiveUS6950245B2Control power consumptionLittle noiseTelevision system detailsPrismsOptical propertyImage formation
The invention relates to an optical system or apparatus such as a lens system capable of focus control and a variable-focus lens, which has reduced power consumptions, ensures noiseless operation and fast response and contributes to cost reductions for the reason of simplified structure. Specifically, the invention provides an optical apparatus comprising an element 409 having variable optical properties and an image plane 612. To correct the optical apparatus for movement of the image-formation surface of an optical system 614 in association with a change in the element 409 having variable optical properties, the image plane 612 is placed in the range of movement of the image-formation surface in association with the change in the element having variable optical properties.
Owner:OLYMPUS CORP
Guiding system for a sliding door
ActiveUS7703242B2Free playLittle noiseCurtain accessoriesMan-operated mechanismEngineeringMechanical engineering
A guiding system for a sliding door, especially a motor vehicle, comprising a sliding rail (5) with an upper cover (6) and a lower edge (7) arranged opposite the upper cover (6), and a roller element (101) which is guided in the sliding rail (5) and comprises a roller element housing (102) is presented. Three rollers (103, 104) are rotatably fixed to the roller element housing (102), two rollers (103) extending along the upper cover (6) of the sliding rail (5) and the third roller (104) extending along the lower edge (7). The invention creates one such guiding system in such a way that there is no play, it operates quietly, and has a taut system characteristic. To this end, a spring element (109) is fixed to the roller element housing (102), said spring element pressing on of the first two roller (103) and the third roller (104) against the sliding rail (5).
Owner:EDSCHA ENG GMBH
Electric power steering system
InactiveUS20060169528A1Reduce the amount requiredSuppress drop durabilityYielding couplingBall bearingsElectric power steeringEngineering
A curved leaf spring which is a first urging member surrounds an outer wheel of a second bearing, and urges, through the second bearing, a second end of a worm shaft in a direction in which the distance between the center of the worm shaft and the center of a worm wheel is shortened. A second urging member includes an annular support member received by an end surface of the outer wheel and a plurality of elastic pins extending in a direction in parallel with the axial direction of a support member. The elastic pins have fixed ends fixed to the support member and free ends that come into elastic contact with an end wall of a housing.
Owner:JTEKT CORP
Radio receiving apparatus for receiving communication signals of different bandwidths
InactiveUS6307897B1Small sizeLow powerPhase-modulated carrier systemsPulse demodulatorBandpass filteringCommunications system
A received signal obtained from an antenna is subjected to high-frequency amplification. The amplified signal is supplied to a first bandpass filter, which extracts only signals of all the channels of a communications system concerned while filtering out other radio signals. The extracted signals are frequency-converted by using a local oscillation frequency, and only a desired wave is passed by a second bandpass filter. The desired wave is supplied to a sample-and-hold circuit, which performs sampling according to the bandwidth-limiting sampling theorem. A resulting discrete signal is supplied to an I-axis-component and Q-axis-component separating circuits, where the polarity of sample values is inverted for every other clock pulse with respect to each of the I and Q axes to thereby effect Hilbert transform. Resulting two orthogonal components on a phase plane are supplied to a complex coefficient filter.
Owner:PANASONIC CORP
Display device and imaging method
InactiveUS20050104877A1Improve display qualityLittle noiseTelevision system detailsDigital data processing detailsDisplay deviceImage capture
A display device has a pixel array part having display elements provided inside of pixels formed in vicinity of cross points of signal lines and scanning lines aligned in matrix form; image capture circuits provided corresponding to the display elements, each including an optical sensor which picks up image at prescribed range of an imaging subject; and an image capture processing unit which generates ultimate image capture data based on result of having picked up images a plurality of times while changing image capture condition except for display color, with respect to each of M kinds of display colors.
Owner:JAPAN DISPLAY CENTRAL CO LTD
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