39results about How to "High resolution" patented technology

A method for enhancing the temporal resolving power of an optical signal recording system such as a streak camera or photodetector by sinusoidally modulating the illumination or light signal at a high frequency, approximately at the ordinary limit of the photodetector's capability. The high frequency information of the input signal is thus optically heterodyned down to lower frequencies to form beats, which are more easily resolved and detected. During data analysis the heterodyning is reversed in the beats to recover the original high frequencies. When this is added to the ordinary signal component, which is contained in the same recorded data, the composite signal can have an effective frequency response which is several times wider than the detector used without heterodyning. Hence the temporal resolving power has been effectively increased while maintaining the same record length. Multiple modulation frequencies can be employed to further increase the net frequency response of the instrument. The modulation is performed in at least three phases, recorded in distinct channels encoded by wavelength, angle, position or polarization, so that during data analysis the beat and ordinary signal components can be unambiguously separated even for wide bandwidth signals. A phase stepping algorithm is described for separating the beat component from the ordinary component in spite of unknown or irregular phase steps and modulation visibility values. This algorithm is also independently useful for analyzing interferograms or other phase-stepped interferometer related data taken with irregular or unknown phase steps, as commonly found in industrial vibration environments.

A multiplying digital to analog converter comprising a digital to analog converter having a plurality of capacitors coupled in parallel, applying first signals to the capacitors during a sampling period, and applying second signals to the capacitors during an amplifying period, and an amplifier including a first amplifier electrically coupled to the digital to analog converter; a second amplifier electrically coupled to the first amplifier; and a first switch electrically coupled between an input end and an output end of the second amplifier, being turned off during a sampling period, and being turned off during an amplifying period.

The invention provides a light-weight, small-size and high-resolution optical system and an imaging device. The invention provides an optical system and an imaging device including the same. The optical system comprises a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power, which arearranged in this order from the object side. The second lens group moves along the optical axis during focusing, the first lens group includes two or more convex lenses, the second lens group is composed of two or more lenses, and the optical system satisfies a predetermined conditional expression.

Legibility of text in an image of a page is determined by comparing a measure of the text in the page image with a measure of the page image itself. In one aspect, a measure of the text in the page image may be the height of a line of text, while the measure derived from the page image may be the height of the page image. A text-to-page height ratio is determined and compared to one or more thresholds for determining legibility. In another aspect of the invention, a measure of the text in a page image is obtained by measuring the word density in the page image, while the measure derived from the page image comprises compressing the page image and determining the size of the compressed image file. Legibility is then determined by comparing the measure of word density with the compressed image file size.

There is described a system and a method for analyzing spots in a micro-array, the spots containing targeted specimen, the method comprising the steps of: providing a slide with a micro-array of the spots thereon; illuminating at least one of the spots; directing the light onto the at least one spot; collecting light emitted from the at least one spot; forming an image of the at least one spot using the collected light; and analyzing the image to distinguish at least one unit of the targeted specimen located within the at least one spot from any undesired material. The analysis results are aimed at the detection, classification and quantification of optically resolvable specimen such as micro-organisms or cells.

The invention relates to the technical field of seismic exploration, in particular to a fidelity frequency-increasing method for high-coverage pre-stack seismic data. The method comprises the following steps that applicability judgment is conducted on seismic data pre-stack gather data to be processed, and if conditions are met, residual time difference elimination is conducted on a pre-stack CRPgather; random noise suppression processing based on prediction errors is carried out on the pre-stack CRP gather with the residual time difference eliminated; stability inverse Q filtering processingis performed based on time-frequency analysis; weighted least square Radon transform denoising processing is carried out; time-varying pulse deconvolution processing is carried out; and denoising andcoherent superposition processing are carried out. According to the fidelity frequency increasing method for the pre-stack seismic data with the high coverage frequency, the signal-to-noise ratio ofhigh-frequency components of the pre-stack CRP gather can be effectively improved. The resolution ratio is greatly improved, meanwhile, the transverse resolution ratio is not lost, the comprehensive quality of the CRP gather is improved, and the requirement for prestack inversion can be met.

The invention discloses a color printing device based on a metal nano brick array and a printing method. A metal nano brick array structure comprises a substrate and a nano brick array on the substrate. On the basis of a metal surface plasma resonance effect, a polarization separation structure can be designed through specific nano brick sizes; and on the basis of anisotropic characteristics of ametal nano brick-air mixing layer structure, metal nano brick structures with different spectral responses can be designed by changing the duty ratio and sizes of the metal nano bricks. The metal nanobricks with different geometric dimension parameters can serve as polarizers of blue light, green light and red light wave bands, also have functions of light filtering and polarizing beam splittingand are used for realizing the color nano-printing function. The nano brick array can be widely applied to the fields of compact display, optical counterfeiting prevention, information encryption, light storage and the like and can be manufactured only through a simple one-time photolithography technique, thereby having the outstanding advantages of being flexible in design, simple to process, compact in structure and the like.

A semiconductor device (100) includes: a substrate (11); a first thin film transistor (10A) supported on the substrate (11), the first thin film transistor (10A) having a first active region (13c) which mainly contains a crystalline silicon; and a second thin film transistor (10B) being supported on the substrate (11), the second thin film transistor (10B) having a second active region (17c) which mainly contains an oxide semiconductor having a crystalline portion.

A nonlinear current sampling assembly comprises a nonlinear assembly (1), a compensating element (2) and a current signal processing unit (3). The nonlinear assembly (1) and the compensating element (2) are in electrical parallel connection, and after parallel connection, the two ends are electrically connected with the current signal processing unit (3). The assembly is mainly used for meeting the requirements of some special applications, the resolution and anti-interference performance can be improved when instant small current signals occur, it can be guaranteed that the voltage drop of the sampling assembly is low when large current signals occur, the power loss of the sampling assembly is effectively reduced when a large occurs, and the time delay of sampling signals is small.

Provided is a tabletop interface system. A tabletop input device diffuses an infrared light emitted based on at least one touch input from a user. A tabletop output device allows the diffused infrared light to pass therethrough to display content information corresponding to at least one touch point. The tabletop recognition device recognizes the at least one touch point by generating a touch image data based on the infrared light passing through the tabletop output device and generates touch point information by using the touch image data. The content server transmits the content information, which corresponds to the touch point information received from the tabletop recognition device, to at least one content client application.

A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.

A multi-region light scattering element with the optical characteristics of low speckle, high resolution high contrast, and high gain when used as an imaging element without any resulting loss of transmission or brightness with viewing angle. The multi-region light scattering element contains at least one region asymmetrically shaped light scattering features that are separated from a second light scattering region by a non-scattering region. In one embodiment, one or more of the regions contains particles that are asymmetrically shaped that improve the optical performance. In one embodiment, asymmetric particles are located in two regions separated by a non-scattering region with the particles within each region substantially aligned along an axis and the two axes are substantially perpendicular to each other. Methods for production of the screen element are also described.

The invention provides flexible and elastic intelligent metal rubber based on gold nanoparticle-polyethylene and a preparation method of the rubber. The metal rubber consists of a polyethylene layer and a gold nanoparticle layer, wherein the polyethylene layer and the gold nanoparticle layer are alternately overlapped and closely and vertically arranged, the gold nanoparticle layer consists of spherical gold nanoparticles, and the particles are in conductive contact through electronic tunneling; the polyethylene layer is made of low-density polyethylene. According to the flexible and elastic intelligent metal rubber based on gold nanoparticle-polyethylene and the preparation method of the rubber, an ultrathin film can be prepared and can perceive film surface compressive stress/ strain, internal stress/strain distribution of a film coverage area and the capacity of the film with the change of time. Meanwhile, the film has good flexibility, can be better attached to a 3D curved surface, can work normally under a repeated deformation condition, has good stability and can still keep good elasticity, conductivity and resistance sensitivity to strain under the repeated deformation condition.

The invention discloses a multi-stage axial-flow compressor of a gas turbine, and relates to the technical field of compressors, in particular to a multi-stage axial-flow compressor of a gas turbine.The multi-stage axial-flow compressor comprises a shell, wherein positioning pieces which are symmetrically distributed are fixedly connected to the two sides of the outer part of the shell, and fixing rings are fixedly connected to the bottoms of the positioning pieces; and the bottoms of the fixing rings are fixedly connected with fixing clamping blocks. According to the multi-stage axial-flow compressor of the gas turbine, a sleeve is fixedly connected to the left end of the shell, symmetrically-distributed filter screen plates are movably connected to the interior of the sleeve, and a buckle is fixedly connected to the tops of the filter screen plates; and meanwhile, the buckle is stably buckled to the exterior of the sleeve, fixing nuts are movably connected to the top of the buckle,and the overall stability between the filter screen plates and the sleeve is controlled through the fixing nuts, so that it can be guaranteed that the device can filter dust in outside air, and thus the problem that an existing device is prone to being blocked by the dust is solved.

The invention relates to a MS-LBP (Multi-scale Local Binary Pattern) feature extraction method and a system based on path integral. The method comprises steps: a cross-scale path set and multiple high pass filters are built, and a path and a high pass filter with the same length are combined to form a feature parameter group; as for each pixel point, according to each feature parameter group, a multi-scale path integral local binary pattern (pi-LBP) feature value is extracted; as for pi-LBP feature values of all pixel points in each feature parameter group, a histogram is built, and all histograms are serially connected to form a final feature value of the image. Through building different cross-scale paths and high pass filters, the texture correlation among different scales is extracted, the problem of single change of LBP coding can be solved, more effective features can be extracted through building the different paths and filters, and the feature recognition ability is thus improved.

A system for making a biochemical assay of each of plurality of provided specimens, comprising: a plurality of receptacles, a sensor for providing a resistance, a mechanism and a controller.

A position measuring device of the invention includes a light emitter configured to emit a laser light, a hologram configured to generate a reconstructed image of an inclined surface relative to an optical axis, a light receiver disposed on a reconstructed image forming surface of the hologram, and a measurement unit configured to measure a position of an object based on a position of light received by the light receiver. In the position measuring device of the invention, the light emitter may emit a linear laser light and the light receiver may include an image sensor having a two-dimensional array of pixels.

The invention discloses a microminiature Raman blood special analyzer based on Raman spectrum analysis, which integrates a holographic flat field concave grating Raman beam splitting system with a modular design, a high-effect CCD sensor spectrum detecting system, a special sample testing probe and assorted blood identification software, for the Raman spectrum test and spectrum identification of different types of blood samples, and efficient identification and authentication functions of blood species and types are achieved. The microminiature Raman blood special analyzer disclosed by the invention has the advantages of high detection sensitivity, simple operation, short time consumption, high accuracy, good portability and practicability and the like, and can realize quick identification of blood species and various biochemical samples.

A liquid crystal display panel, a display device, and a driving method thereof are disclosed. The liquid crystal display panel comprises a plurality of data line pairs, a plurality of scanning lines, and a pixel unit array, wherein the first scanning line and the second scanning line turn on TFT switches of two rows of pixel units simultaneously according to a scanning driving signal, and the first data line and the second data line charge the pixel electrodes of two rows of pixel units through the TFT switches according to a data driving signal.

Methods and systems of fabrication of high resolution, high-throughput electrochemical sensing circuits on a substrate. High resolution electrochemical sensing circuits are printed by an effective additive technique to the substrate. Optionally, post-print annealing converts electrochemically inactive printed graphene into one that is electrochemically active. The printing can be by aerosol jet printing, but is not necessarily limited thereto. An example is inkjet printing and then the post-print annealing. Ink formulation would be adjusted for effectiveness with inkjet printing. Optionally biorecognition agents can be covalently bonded to the printed graphene for the purpose of electrochemical biosensing. High throughput fabrication of high-resolution graphene circuits (feature sizes in the tens of microns <50 μm) for electrochemical biosensing is possible by chemical functionalization of the graphene surface with a biological agent.

A near-infrared spectrum imaging system for diagnosis of the depth and the area of burn skin necrosis comprises a spectrum imager and a computer controlled system. The spectrum imaging system comprises a light source (101), an optical lens (102), a filter (103), a driving controller (105a, 105b, 104), and a CCD camera (106). The filter (103) uses a wide-spectrum liquid crystal tunable filter (LCTF) or an acousto-optic tunable filter (AOTF) that obtain 1100-2500 nm waveband spectral signals of burn skin necrosis tissue of a target region. A compute controlled system is internally provided with a universal module, a data module, a spectrum correction module, a spectrum matching module, and a burn wound three-dimensional synthesizing module. The spectrum imager obtains spectral image data of burn skin necrosis tissue of a target region and inputs the data into the computer controlled system, and the computer controlled system performs image analysis and processing of the data; the depth and the area of burn of the target region can be obtained by means of spectral matching and recognition on a spectral reflectance curve corresponding to each image pixel in an spectral image and a standard spectral reflectance curve in a burn skin necrosis spectral database in a data module, and the data is synthesized into a three-dimensional image for display.