54results about How to "Poor precision" patented technology

Methods, devices, and systems for ultrashort pulse laser processing of optically transparent materials are disclosed, with example applications in scribing, marking, welding, and joining. For example, ultrashort laser pulses create scribe features with one pass of the laser beam across the material, with at least one of the scribe features being formed below the surface of the material. Slightly modifying the ultrashort pulse laser processing conditions produces sub-surface marks. When properly arranged, these marks are clearly visible with correctly aligned illumination. Reflective marks may also be formed with control of laser parameters. A transparent material other than glass may be utilized. A method for welding transparent materials uses ultrashort laser pulses to create a bond through localized heating. In some embodiments of transparent material processing, a multifocus beam generator simultaneously forms multiple beam waists spaced depthwise relative to the transparent material, thereby increasing processing speed.

Methods for ultrashort pulse laser processing of optically transparent materials. A method for scribing transparent materials uses ultrashort laser pulses to create multiple scribe features with a single pass of the laser beam across the material, with at least one of the scribe features being formed below the surface of the material. This enables clean breaking of transparent materials at a higher speed than conventional techniques. Slightly modifying the ultrashort pulse laser processing conditions produces sub-surface marks. When properly arranged, these marks are clearly visible with side-illumination and not clearly visible without side-illumination. In addition, a method for welding transparent materials uses ultrashort laser pulses to create a bond through localized heating. The ultrashort pulse duration causes nonlinear absorption of the laser radiation, and the high repetition rate of the laser causes pulse-to-pulse accumulation of heat within the materials. The laser is focused near the interface of the materials, generating a high energy fluence at the region to be welded. This minimizes damage to the rest of the material and enables fine weld lines.

Methods for ultrashort pulse laser processing of optically transparent materials. A method for scribing transparent materials uses ultrashort laser pulses to create multiple scribe features with a single pass of the laser beam across the material, with at least one of the scribe features being formed below the surface of the material. This enables clean breaking of transparent materials at a higher speed than conventional techniques. Slightly modifying the ultrashort pulse laser processing conditions produces sub-surface marks. When properly arranged, these marks are clearly visible with side-illumination and not clearly visible without side-illumination. In addition, a method for welding transparent materials uses ultrashort laser pulses to create a bond through localized heating. The ultrashort pulse duration causes nonlinear absorption of the laser radiation, and the high repetition rate of the laser causes pulse-to-pulse accumulation of heat within the materials. The laser is focused near the interface of the materials, generating a high energy fluence at the region to be welded. This minimizes damage to the rest of the material and enables fine weld lines.

A communication method for transmitting Ethernet messages in a distributed real-time system in which a plurality of network node computers, e.g. four network node computers (111, 112, 113, 114), each comprising at least one communication controller (121, 122, 123, 124), are linked via a communication system comprising one or more communication channels (109), one or more intelligent star couplers (101, 102) being disposed in each communication channel. According to the invention, a distinction is made between conventional Ethernet messages (ET messages) and time-triggered Ethernet messages (TT messages), the TT messages being transported with an a priori known constant delay time (Δ) between transmitter and receiver, and, when there is a time conflict between ET and TT messages, the transport of the ET message that is in conflict being delayed or aborted in order to be able to transport the TT message with the constant delay time (Δ). Furthermore, the invention relates to a corresponding communication system and a star coupler for such a communication system.

A method and apparatus for resetting a valve lift for use in an engine brake. A brake piston (160), and a hydraulic fluid passage (214) are arranged within a rocker arm (210) or a valve bridge (400) of an engine. A resetting valve arranged between the rocker arm (210) and the valve bridge (400) is driven by a change in the distance between the rocker arm (210) and the valve bridge (400). When the valve lift of an engine exhaust valve (300) reaches a maximum, a reset fluid passage (219) is opened, the hydraulic pressure within the hydraulic fluid passage is released, the brake piston (160) is reversed by one interval, the motion transmission between a cam (230) and the engine exhaust valve (300) is partially disengaged, and the valve lift of the engine exhaust valve (300) is reduced. Also, during a returning process of the valve lift of the engine exhaust valve (300) after reaching the maximum position, repositioning of the reset valve is used to maintain a supply of pressure within the hydraulic fluid passage, the brake piston (160) is allowed to be positioned at an extended position, and the motion transmission between the cam (230) and the engine exhaust valve (300) is resumed. The apparatus for resetting the valve lift can be integrated within an engine exhaust valve brake, and is structurally simple, convenient to install and to adjust, thereby improving safety and reliability.

An exemplary embodiment of portable electronic device with guide function includes a housing, a processing unit, a command unit, and a guiding unit. The processing unit and the guiding unit are positioned inside the housing, and the command unit is positioned at least partially outside of the housing. The processing unit is electrically connected to the command unit and the guiding unit. Operating the command unit, the portable electronic device with guide function is actuated into guiding mode controlled by the processing unit. The guiding unit sends detection signals to detect obstacles, receives feedback signals from the obstacles, the processing unit receives the feedback signal from the guiding unit to generate corresponding obstacle types and distance according to the feedback signal.

To provide a double-sided adhesive tape for securing a polishing-pad, the tape being capable of improving precision in polishing using a polishing-pad.The double-sided adhesive tape 1 for securing the polishing-pad includes a substrate 2 and adhesive layers 3 and 4, which are provided on both sides of the substrate 2, respectively. The substrate 2 is formed of a polyethylene terephthalate resin-film having a thickness of 150 to 300 μm, one of the adhesive layer 3 is formed of a synthetic rubber pressure sensitive adhesive, and the other adhesive layer 4 is formed of an acrylic solvent-based pressure sensitive adhesive.

The present invention corrects the insufficient peripheral light amount due to the lens shading and correcting the non-uniformity of light amount at the periphery due to a distortion resulting from a precision of the lens or a poor mounting precision of the lens. A peripheral light amount correction circuit is structured by an image synchronization signal generation circuit, a coordinate conversion circuit and a luminance value correction computing circuit. An integrated value of luminance values is calculated at the coordinate conversion circuit to extract light amount information. Coordinate values to be input to the luminance value correction computing circuit are generated based on an integrated / averaged value of the light amount information. In the luminance value correction computing circuit, peripheral light amount correction functions are converted based on the input coordinate values from the coordinate conversion circuit to perform appropriate correction on the input image.

The invention discloses a webpage access data statistical method and a webpage access data statistical device. The method includes collecting an initial dataset of user access page behaviors, wherein the initial dataset includes initial page browsing data of one or multiple user access target websites; extracting first-time access data of a user from the initial dataset; using a preset judging model to judge the first-time access data to acquire a judgment result; when the judgment result is opposite to a preset result of the preset judgment result, subjecting the first-time access data to forward-trace matching in the initial dataset to acquire associated access data; performing splicing and restoring on the initial dataset on the basis of the associated access data to acquire a restoration dataset. By the method and the device, the problem of poor accuracy in user recognition due to loss of Cookie information in the prior art is solved, and the objectives of accurate counting of user access page data, resisting of side effect brought by Cookie loss and serial connecting of behaviors of the user to restore real user behaviors are realized.

This invention provides a mass spectrometry probe including a substrate having a surface and a hydrophobic coating that coats the surface. The hydrophobic coating includes openings that define features for the presentation of an analyte. The hydrophobic coating also has a lower surface tension that the features on the substrate surface, and has a water contact angle between 115° and 140°.

A speaker includes a speaker main body and attachment parts arranged to attach the speaker main body to an electronic apparatus such as a television. The speaker is attached to the electronic apparatus as a result of fitted holes in the attachment parts being fitted over projections on the electronic apparatus. Each of the attachment members includes a metal plate integral with a frame of the speaker main body and a rearward extension part that is bent from a side edge of the frame toward a back of the speaker main body and an inward extension part that is bent from the rearward extension part toward an inside of the speaker main body. Portions of the inward extension parts overlap with the speaker main body on the back side of the speaker main body. The fitted holes are provided in the inward extension parts.

An exemplary embodiment of portable electronic device with guide function includes a housing, a processing unit, a command unit, and a guiding unit. The processing unit and the guiding unit are positioned inside the housing, and the command unit is positioned at least partially outside of the housing. The processing unit is electrically connected to the command unit and the guiding unit. Operating the command unit, the portable electronic device with guide function is actuated into guiding mode controlled by the processing unit. The guiding unit sends detection signals to detect obstacles, receives feedback signals from the obstacles, the processing unit receives the feedback signal from the guiding unit to generate corresponding obstacle types and distance according to the feedback signal.

The present invention provides a gesture recognition sensor and an operating method thereof. The gesture recognition sensor comprises a phase-locked loop PLL in which waveform programming can be carried out, a voltage-controlled oscillator VCO, a transmitting antenna, receiving antennas, a mixer, an intermediate frequency analog circuit, an analog-to-digital converter ADC and a signal processing module; the voltage-controlled oscillator VCO is connected with the phase-locked loop PLL and the transmitting antenna; the mixer is connected with the receiving antennas and one terminal of the intermediate frequency analog circuit; and the analog-to-digital converter ADC is connected with the other terminal of the intermediate frequency analog circuit and the signal processing module. A recognition method complete different from a traditional gesture recognition sensor is adopted by the sensor, and the sensor has high reliability and recognition precision.

A slide mechanism includes a rear cover, and a front cover slidably attached to the rear cover. One of the rear cover and the front cover defines two sliding grooves, the other forms two sliding rails slidably engaged in the sliding grooves. An elastic portion is formed on one of the rear cover and the front cover, and abuts against the other of the rear cover and the front cover, thereby enabling the sliding rails to tightly contact with said surfaces of the sliding grooves.

Method and compositions for improving DNA polymerase and reverse transcriptase reactions are provided. Addition of anti-foam reagents to the reactions improves fluid handling, especially of small volumes and allows enhanced accuracy of optical detection, without substantially inhibiting enzymatic activity.

A tooth implantation technique and a subperiosteal implant manufacturing method for the solution of extreme atrophy of a tooth bone are disclosed, primarily using steps of tomography, data transformation, software design, 3D printing of a physical model, making a subperiosteal implant wax form, wax form scanning and design, and manufacturing with a CNC milling machine, so as to make a subperiosteal implant that fits with a patient, thereby improving the shortcomings in a conventional manufacturing procedure of an implant.

A target value that serves as a control value with feed forward control is optimized. A TL performs a feed forward and a feedback control of a PM. A storage unit stores a plurality of recipes indicating different processing sequences, and a target value that serves as a control value when performing an etching process. A communication unit causes an IMM to measure a processing state of the wafer and receives measurement information. A computation unit computes a feedback value for the current wafer processed in the current cycle, based on pre-processing and post-processing measurement information for the wafer. An update unit updates the target value using the feedback value. A recipe adjustment unit changes the recipe to change the process performed in the same PM. When the process is performed after changing, the updated target value is used to perform feed forward control of the wafer in the same PM.

The present invention relates to a method for analysing the amount of free gas within a pharmaceutical sample. According to the invention the method comprises the following steps: providing a sample before an irradiating source; irradiating the sample with at least one beam of electromagnetic radiation; detecting radiation emitted through the sample and generating signals corresponding to the amount of free gas in the sample, and correlating the generated signals to at least one solid state parameter of the sample.

A semiconductor device fabrication method applies a diazo novolac photoresist to a semiconductor wafer, followed by light exposure of its entire surface to form an underlying resist layer; forms a surface resist layer thereover; performs patterned-light exposure and heat treatment to the photoresist film consisting of the two resist layers formed; and exposes its entire surface to light, followed by development to process the photoresist film into a resist pattern, where the surface resist layer is in an inverse tapered shape, while the underlying resist layer is in an undercut shape relative to the surface resist layer.

An quantitative ZAP-70 assay is provided, with ZAP-70+ and ZAP-70− controls, normal human blood controls, an improved antibody with better signal to noise ratio, and using the median MEFL that is calibrated using a standard curve.

A location predicting unit predicts a composing location based on the composing locations corresponding to partial images of one-frame-before and two-frames-before the current partial image on an assumption that the above partial image moves at a constant speed, and gives the above predicted value to a combining unit as an initial value. The combining unit moves locations of the current partial image and the one-frame-before partial image pixel by pixel in a predetermined direction starting from the initial value and combines the above partial images each other. A picture element comparing unit and a location determining unit calculate the cumulative value of the brightness differentials between picture elements of the current partial image and the one-frame-before partial image in the overlapped part with respect to each of the combining locations. In the above operation, the calculation of the cumulative value corresponding to the currently-calculated combining location is finished when the above currently-calculated cumulative value exceeds the cumulative value corresponding to the already-calculated combining location.

The invention discloses an electromagnetic type pipeline welding aligning device and a working method. The method comprises the following steps that rough aligning is carried out on pipelines needingto be in butt joint; the aligning device is arranged at a connector of the pipelines, a line laser measuring instrument is aligned with a welding seam at the connector, and two laser displacement sensors are distributed on the two sides of the welding seam; a hydraulic cylinder is adjusted according to the diameter of the pipelines; the hydraulic cylinder drives a base plate, an adjusting column and an aligning device pressing plate to downwards extrude, and the pipelines are fixed; and after the pipelines are fixed, whether the centering effect and the width of the welding seam meet the needed standard or not is checked through the laser displacement sensors and the line laser measuring instrument. According to the electromagnetic type pipeline welding aligning device and the working method, the two laser displacement sensors are arranged on an annular holder in parallel, the coaxiality problem of the pipelines is detected through the distances between the sensors and the surfaces ofthe two pipelines, and if the two measured distances are the same or within the error range, centering is completed, the aligning precision is high, and operation is convenient.

A method and apparatus for resetting a valve lift for use in an engine brake. A brake piston (160), and a hydraulic fluid passage (214) are arranged within a rocker arm (210) or a valve bridge (400) of an engine. A resetting valve arranged between the rocker arm (210) and the valve bridge (400) is driven by a change in the distance between the rocker arm (210) and the valve bridge (400). When the valve lift of an engine exhaust valve (300) reaches a maximum, a reset fluid passage (219) is opened, the hydraulic pressure within the hydraulic fluid passage is released, the brake piston (160) is reversed by one interval, the motion transmission between a cam (230) and the engine exhaust valve (300) is partially disengaged, and the valve lift of the engine exhaust valve (300) is reduced. Also, during a returning process of the valve lift of the engine exhaust valve (300) after reaching the maximum position, repositioning of the reset valve is used to maintain a supply of pressure within the hydraulic fluid passage, the brake piston (160) is allowed to be positioned at an extended position, and the motion transmission between the cam (230) and the engine exhaust valve (300) is resumed. The apparatus for resetting the valve lift can be integrated within an engine exhaust valve brake, and is structurally simple, convenient to install and to adjust, thereby improving safety and reliability.

A reactor has a heat exchanging body having a heat medium flow channel that a heat medium fluid flows and a reaction flow channel that a reaction fluid flow, and at least one detection part for detecting temperature of a fluid in one or both of the heat medium flow channel and the reaction flow channel. At least one installation hole extends in a skew position to the flow channel and includes an opening portion communicating with the flow channel. The detection part is installed at the opening portion and contacts the flowing fluid. At least one fluid guide hole is formed along the flow channel from the opening portion of the installation hole.

A TDMA-based communication method for enabling communication between a base station and a client, the base station and the client each comprising a clock for synchronising communications, the method comprising: allocating a TDMA channel to said client; causing a transceiver of the client to operate in a communication mode during client timeslots making up said allocated channel and to operate in a sleep mode at other times; causing a transceiver of said base station to begin operating in a communication mode with said client on said channel in advance of each said client timeslot and / or to continue operating in a communication mode with said client after each said client timeslot.

The presently disclosed technology includes a friction stir welding apparatus comprising a frame, a moving platform and a parallel mechanism composed of three branch mechanisms, wherein a first branch mechanism comprises a first sliding pair, a first revolute pair, a telescopic rod and a first spherical pair connected in sequence. A second branch mechanism and a third branch mechanism both comprise a third sliding pair, a second revolute pair, a third linkage and a second spherical pair connected in sequence. The friction stir welding apparatus has high stiffness, low inertia, high dynamic performance and high accuracy, which can achieve precision welding with high requirements on processing quality and accuracy for jointing annular seams of large-scale rocket fuel storage tank barrels in the aviation field, for example. The presently disclosed technology also includes a corresponding friction stir welding system.