124results about How to "Improve scan performance" patented technology

The invention relates to a DLP three-dimensional printer and a three-dimensional printing method based on a digital light processing technology and a three-dimensional scan technology, wherein the DLP three-dimensional printer comprises a frame, a control unit, a scanning and projecting unit, a scanning molding carrying unit as well as a molding groove mounted on the frame, wherein the molding groove is used for containing a light-cured resin solution; the scanning and projecting unit comprises a scanning light source, a molding light source, a digital micro-lens wafer and a scanning reflective light receiver; the scanning molding carrying unit is used for carrying a scanned object and molding a three-dimensional object in the molding groove; the digital micro-lens wafer is controlled by the control unit to process light generated by the scanning light source and the molding light source so as to correspondingly form scanning light for three-dimensional scanning on the object or molding light for curing the light-cured resin solution in the molding groove. According to the DLP three-dimensional printer, the processing capability of the digital micro-lens wafer on light can be fully utilized, so that the shape and the size of facula of the scanning light beam are no longer limited by the scanning light source.

The invention relates to phased-array antenna equipment, a wide-angle impedance matching device of the phased-array antenna equipment and a phased-array antenna system. The phased-array antenna equipment comprises an antenna device array and the wide-angle impedance matching device arranged above the antenna device array. The wide-angle impedance matching device comprises a first substrate, a plurality of horizontal conductive geometrical structures and a plurality of vertical conductive geometrical structures. The horizontal conductive geometrical structures are horizontally arranged on one surface of the first substrate, the vertical conductive geometrical structures are arranged above or below the horizontal conductive geometrical structures and are arrayed to be perpendicular to the first substrate roughly. The phased-array antenna equipment and the wide-angle impedance matching device of the phased-array antenna equipment have the following advantages that the influence of scanning blind points on a required frequency band is reduced, wide-band and wide-angle phased array scanning impedance matching is achieved, hence, the wide-angle scanning gain is improved, the scanning coverage is expanded, and the antenna scanning performance is improved.

A CT scanning device includes a scanning gantry, a supporting means for a scanning table, and a supporting base for fixing and supporting the scanning gantry. The scanning gantry is configured to scan a subject and to collect scanning data. The supporting means supports the scanning table, and is mounted on the supporting base and located between the scanning gantry and the supporting base.

The invention a coordinate measuring machine, a probing system and a method for compensating a force at a probe element. A probing unit (16) comprises an actuator (21) which is arranged and designed in such manner that a force is applicable to the probe element with respect to at least one actuating direction in variable and defined manner, the force depending on an applied actuating signal. Movement information about an expected movement of the probing unit (16) is received, the movement information provides information about an expected displacement behaviour of the probe element relative to the probing unit due to induced forces emerging by moving the probing unit (16). At least one particular expected displacement behaviour of the probe element is derived for at least one particular moving point based on the movement information and the actuating signal is determined for the at least one particular moving point based on the at least one particular expected displacement behaviour, the actuating signal provides applying a defined counterforce to the probe element by the actuator (21) as to the expected displacement behaviour at the particular moving point.

Systems and methods for using a multimodal handheld reader are described. The reader can be used to read non electronic labels, passive RFID tags using backscatter modulation techniques and battery based active RFID tags using a single handheld. The reader deploys a multiplexed antenna design and thereby contains a method to read a group of passive RFID tags and at the same time the reader can isolate a single passive RFID tag from amongst a group of passive RFID tags within close proximity. All such passive RFID tags use backscatter modulation techniques and are in the readers own RF zone.

The invention discloses a method and a device for a mobile terminal to scan a two-dimension code, and belongs to the field of mobile communication. The method comprises the steps of acquiring the pressure value of a mobile terminal screen pressure sensor, adjusting the scanning range of a scanning frame according to the pressure value, displaying the scanning frame after adjustment, and acquiring a two-dimension code to be identified in the scanning range and analyzing the two-dimension code to be identified. By adopting the method and the device of the invention, a mobile terminal can scan a two-dimension code or barcode quickly and accurately, and the scanning speed and effect are greatly enhanced. The method and the device are more user-friendly.

The invention relates to a resonant scanning mirror, a scanning method, a scanning angle measurement method and a resonant scanning mirror processing method. The resonant scanning mirror comprises a steel sheet, a magnet, a driving coil and an angle measurement coil, wherein the steel sheet comprises a first torsion shaft and an inner frame connected with the first torsion shaft, the inner frame is provided with a smooth surface suitable for beam reflection, the magnet is suitable for generating the single-directed magnetic field at the level of the steel sheet, the driving coil is arranged inthe inner frame of the steel sheet and is suitable for bearing the force in the magnetic field generated by the magnet to drive the inner frame to rotate when a driving current is inputted, and the angle measurement coil is arranged in the inner frame of the steel sheet and is suitable for measuring a scanning angle of the inner frame. The resonant scanning mirror is advantaged in that on one hand, large-aperture and large-angle scanning can be realized with relatively low cost, on the other hand, a piezoresistive or capacitance measurement angle measurement realization method in the MEMS process is simplified, the process is simple, and cost is low.

The invention claimed is a method and apparatus to allow for scanning of both paper documents and thicker media such as credit or identification cards utilizing the same piece of scanner hardware. The inventive apparatus provides a depressible card reader slot located in the center of the horizontal axis of the sheet feed, and accompanying cantilever system for providing appropriate thickness of insert area for the particular media. A software implementation facilitates an automatic scan of either media inserted. The inventive method and apparatus is unique to the prior art in that it allows both media to be scanned utilizing the same piece of hardware, which offers both ease of use and value to the consumer.

The invention discloses an array plane layout method for a space-borne SAR (Synthetic Aperture Radar) phased-array antenna and relates to a radar antenna technology. The array plane layout method comprises the following steps of: under the condition that the number of azimuth T/R (Transmit/Receive) assemblies (or phase shifters) of the phased-array antenna is not changed, dividing an array plane of the antenna into a plurality of unequal subarrays along the range direction; staggering along the azimuth direction of the antenna by using each subarray as the unit, wherein a staggering distance is about one second of a spacing of each two adjacent T/R assemblies in the range direction; and discretizing single big-peak scanning grating lobes of a regular rectangular lattice structure into a plurality of distributed small-peak grating lobes, so that the peaks of the scanning grating lobes in the azimuth direction are greatly reduced and the influence of the big-peak grating lobes on a radar system is reduced. The larger the number of the subarrays which have different spacings and are formed by dividing the antenna in the range distance is and the more the types of spacings between the subarrays are, the better the effect of discretizing the big-peak grating lobes is, however, the complexity of layout of a feed network of the phased-array antenna, the design of an antenna frame and the like are also increased. An array plane layout scheme suitable for the engineering application is obtained by comprehensively considering the complexity of the layout of the feed network and the design of the antenna frame and the effect of discretizing the scanning grating lobes in the azimuth direction.

The invention discloses a method for simultaneously determining multiple plant growth regulators in exported vegetables. The method comprises the following steps: extraction, purification, concentration, ultrahigh-performance liquid chromatography-triple quadrupole/composite linear ion hydrazine mass spectrometer (UHPLC-QTRAP) determination and the like. The method can simultaneously determine the 17 plant growth regulators, including gibberellin, indolyl-3-butyric acid, p-chlorophenoxyacetic acid, abamectin, diethyl aminoethyl hexanoate, atrazine, simazine, 6-benzyl aminopurine, 2,4-dichlorphenoxyacetic acid, forchlorfenuron, mepiquat chloride, chlormequat chloride, paclobutrazol, uniconazole, abscisic acid, thidiazuron and p-fluorophenoxyacetic acid. The method disclosed by the invention has the advantages of simple steps, short time consumption, high accuracy and high precision.

Embodiments of the present application provide a data scanning method and apparatus. The method comprises: scanning Key-Value data stored at a first level of an LSM tree; for each storage block at each level excluding the first level: acquiring a Key set, wherein the Key set comprises all scanned Keys; acquiring a Key value range of the storage block; acquiring a Key intersection obtained according to the Key set and the Key value range; acquiring a scanning accuracy of the storage block according to the number of Keys in the Key set stored in a Bloom filter established for the storage block; when the scanning accuracy of the storage block is less than a preset scanning accuracy, scanning the Key-Value data stored in the storage block; and otherwise, skipping scanning the Key-Value data stored in the storage block. The data scanning method and apparatus provided by the embodiments of the present application reserve I/O resources and improve scanning performance.

The invention relates to a method for filtering the conical defects of a chip by regulating the parameters of a defect inspection device, and the method comprises the following steps: step A, three values of the system parameters Lo of a scanning device machine are adjusted to be between the system default values and 0 under the situation of the given polarization combination; step B, different regions are selected under the full chip observation mode of the scanning device machine, the region in the mapping function is selected as a logic region, then the histogram function is selected to obtain a distribution diagram of scattering dynamic received intensities of three receivers in the region; step C, three values of the transverse coordinates of the corresponding points which start to increase at the left sides of three peak forms on the distribution diagram are determined on the distribution diagram of the scattering dynamic received intensities of the three receivers in the region, that is the three values of the Lo parameters; step D, the three Lo parameters obtained in the step C are used as the Lo parameter values for carrying out the scanning. The method can not only ensure the conical defects of the open region to be successfully filtered, but also ensure the killer defects of the logic region not to be missed by the inspection.

The invention discloses a method and device for scanning a plug-in and determining the rule scheduling sequence in the plug-in. The method includes: during the determining stage of the rule scheduling sequence in the plug-in, determining the resource consumption of each independent rule in rule channels and the hit rate of loophole scanning of the rule channels; determining the scheduling sequence of each rule channel according to the resource consumption and the hit rate; during a scanning stage, sequentially performing loophole scanning according to the scheduling sequence of each rule channel. The method has the advantages that the plug-in is granulated according to the independent rules, the minimum unit of scanning scheduling is granulated into the rule channels, the reasonable rule channel scheduling sequence is determined automatically, plug-in scanning speed and efficiency are increased, computer resources are saved at the same time, and the overall scanning performance of a loophole scanner is increased.

Systems, devices and methods are described herein that are configured for use in the monitoring and detecting of chemical reactions, such as, for example, the monitoring and detection of Polymerase chain reactions (PCR). For example, the systems and devices described herein can be used for accelerated real-time PCR. A fully integrated PCR system is provided that includes a touch screen user interface, eliminating the need for additional computers, keyboards, and related devices. The PCR systems described herein can be network enabled to provide communications between one or more PCR monitoring and detection devices and a central monitoring station. A disposable sample holding device can be placed in the PCR device for testing in an upright vertical orientation, providing improved optical scanning capabilities and rapid heating and cooling capabilities.

The invention discloses an English training auxiliary system, which comprises a base; a sitting posture correction mechanism, a multi-mode learning mechanism, a stabilizing mechanism, a distance adjusting mechanism, a book pressing mechanism and a scanning mechanism are sequentially arranged on the base; the sitting posture correcting mechanism comprises a first sliding groove, a first telescopicrod, a sitting plate, a correcting backrest, an inclination sensor, an adjusting rod, a turbine, a first rotating shaft, a worm, a first motor, a first bevel gear and a second bevel gear. A first sliding groove is formed in one end of the upper surface of the base in an embedded mode. The interior of the first sliding groove is slidably connected with a distance adjusting mechanism. By arranging the sitting posture correcting mechanism, the sitting posture correcting mechanism can be automatically and scientifically adjusted, so that a child is in the optimal sitting posture, and the situationthat when the preprimary children carry out English training, due to the fact that the body is in the development stage, the poor sitting posture during English training easily affects the body development of the children is avoided; and thus the cervical vertebra and lumbar vertebra malformation development is avoided.

A millimeter wave polarimetric detection radiometer at least includes four layers, which are a cover layer, a first metal layer, a dielectric substrate and a second metal layer from top to bottom. Themillimeter wave polarimetric detection radiometer is characterized in that an upper row of first polarized radiation units and a lower row of second polarized radiation units are arranged on the first metal layer, and the first polarized radiation units and the second polarized radiation units are periodically and regularly arranged. The advantages of the traditional linear polarization and circular polarization in the radiation system are taken into account. The optimal performances of circularly polarized and linearly polarized waves are brought into play through reasonable design, and thecircularly polarized and linearly polarized waves are creatively arranged on the same substrate integrated waveguide. Perfect scanning performance is achieved within the millimeter wave band. The problem that the traditional radiation array needs complex components and a complex structure is solved. The side lobe can be suppressed and the side lobe current can be contained without affecting the directionality. The millimeter wave polarimetric detection radiometer has a good application prospect.