42results about How to "Change resolution" patented technology

A digital circuit, system, and method for keystone correction of a projected image utilize a digital compensation engine to resize a digital image prior to projection. Preferred embodiments of the present invention utilize a compensation engine with a separable architecture in which the two-dimensional image-resizing task is partitioned to use two engines. Horizontal image resizing is performed first, followed by vertical image resizing. Two large polyphase, anti-aliasing, finite impulse response (“FIR”) filters are used to resize the data. A 639-tap filter is used for horizontal resizing, and a 383-tap filter for vertical resizing. Pixels in the corrected image can be positioned with arbitrary accuracy to avoid forming stair-stepped lines in the corrected image. The coefficients for the FIR filters can be stored with 10-bit precision to provide a resized image without loss of visible quality. The compensation engine can be readily configured with an ASIC device or in software.

The invention provides a binocular photogrammetry method of large flexible structure vibration displacement, and belongs to the technical field of flexible structure dynamic analysis and measurement. The binocular photogrammetry method of large flexible structure vibration displacement aims to solve the problem that the existing contact measurement impacts performance of a flexible structure. Firstly, industrial cameras are demarcated; then, shock excitation is conducted on the flexible structure to be tested, all the industrial cameras are controlled to be triggered synchronously through a single-chip microcomputer, and shooting of vibration displacement is conducted on the point to be tested of the flexible structure to be tested; next, images obtained by shooting of all the industrial cameras are dealt with, pixel coordinates of the point to be tested are obtained through an angular point detection algorithm, object space coordinates of the point to be tested at each point of time are obtained through a binocular three-dimensional reconstruction technology, and thus the vibration displacement curve of the flexible structure to be tested is obtained. The binocular photogrammetry method of large flexible structure vibration displacement is applied to measuring vibration displacement of the flexible structure.

To provide a technique for converting vertical resolution with a simple constitution. The electro-optical device is provided with a Y driver 13 which selects scanning lines 112 of odd numbered lines in the specified order and a Y driver 14 which selects scanning lines 112 of even numbered lines in the specified order. Therein, the Y driver 13 comprises a shift register 131 which shifts a transfer starting signal SPL according to a clock signal [Phi]L and, thereby, generates a logic signal for selecting scanning lines in the specified order, and an output control circuit 133 which narrows the logic signal into the L-level pulse width of an enable signal EnL and outputs the logic signal as a scanning signal for selecting the scanning lines. The Y driver 14 is also constituted in the similar manner. In such a constitution, in the case of the normal resolution mode, enable signals of which the phases are different from each other are supplied to the Y drivers 13, 14 and the scanning lines of the odd numbered lines and the even numbered lines are alternately selected. On the other hand, in the case of the low resolution mode, enable signals of approximately the same phase are supplied to the Y drivers 13, 14 and the two scanning lines of the adjacent odd numbered line and even numbered line are selected simultaneously.

The invention discloses a method to control and compensate error of programmable standard resistance generator. It comprises 16 exactitude resistances at most and connected with each other to form resistance network in series according to binary principle; eliminating the error brought from the winding process of the exactitude resistances; and deciding the resistance value. And the contacting resistance error of programmable standard resistance generator relay contacts must make hardware to compensate. The invention would make the standard resistance output the absolute error less than 0.2ohm in the range between 0 and 6553.6ohm.

A display apparatus includes: a light emitting unit which emits light; a light scanning unit which includes a light reflector and scans the light in first and second directions; an amplitude changing unit which changes an amplitude of the swing of the light reflector; and a light emitting control unit which adjusts an amount of light of the light emitting unit, wherein the amplitude changing unit allows a first state where the light is scanned in a first region of the display surface and a second state where the light is scanned on the first region and a second region of the display surface is switched, and wherein the light emitting control unit allows an amount of light per unit area of the first region in the first state and an amount of light per unit area of the first region in the second state to be equalized.

The invention relates to an optical sensing based impulse testing method and a device. The optical sensing based impulse testing method is characterized by comprising the following steps that: a guide rail is arranged along the tested impulse direction, a mass block capable of moving along the impulse direction is arranged on the guide rail, a linear raster is fixed at the side of the mass block,and a measurement device is arranged on the guide rail to measure a reflection light intensity-time curve of the linear raster, thereby impulse parameters are calculated. In the device, the pulse impulse parameters are measured by optical sensing, so that the anti-electromagnetic interference capability of a testing system is improved; the low-loss characteristics of optical fiber are utilized torealize the long-distance transmission of measurement signals so as to ensure the safety of a light source, an optoelectronic converter and other devices; the device can be applied to explosion and radiation field, and other special occasions, the testing range, resolution and the like can be changed by adjusting the weight of the mass block, the length of the linear raster, a line space and other parameters according to the tested object, and the method is adapted to the measurement requirements of different occasions and different parameters; and a testing probe has a small volume and a compact structure, and is convenient to install and disassemble.

According to one embodiment, a method for manufacturing an ultrasonic sensor includes forming a first conductive layer on one side of a piezoelectric body having opposing sides; forming a second conductive layer on the other side of the piezoelectric body; forming a backing layer on the first conductive layer; forming a matching layer of a size corresponding to a size of a conveyed object to be detected on the second conductive layer; and providing at least one incision that cuts through the first conductive layer, the piezoelectric body, the second conductive layer and the matching layer, the incisions having a depth extending from the matching layer to at least the first conductive layer, to form a plurality of channels.

The invention discloses an offset correction method of a cursor position, comprising the following steps of: deciding whether to transmit the displacement for controlling a cursor to move or not according to the position of the cursor on the screen of a host and the displacement of an inertial sensing signal; if the cursor exceeds the boundary of the screen, recording the boundary deviation quantity; and carrying out the relative position error compensation when the cursor rotates reversely, and moving the cursor or providing the change on the resolution of the screen after the cursor position enters into a coordinate system of the screen.

The invention provides a bacillus amyloliquefaciens strain and its application in waste deodorization. The stratin is bacillus amyloliquefaciens YZ-0001, and collected at the China General Microbiological Culture Collection Center; the collection number is CGCC 12052 and the collection date is January 14, 2016. The bacillus amyloliquefaciens strain is isolated from soil; the colony characteristics shown on a screening flat panel (LB flat panel) is: the form is round, the surface is smooth and dirty white, and the gram stain is positive. Through the 16Sr DNA microorganism classification and identification, it is determined as bacillus amyloliquefaciens. The bacillus amyloliquefaciens strain has strong and complex organic matter degradation ability; therefore, it can be applied to the waste deodorization, and the deodorization effect is good.

The invention relates to a video fiber optic transceiver. The video fiber optic transceiver comprises a camera-end interface module composed of a camera adaptive module, a buffer module and an external interface module, an acquisition card interface module composed of a reset module, an external interface module and a clock module, and two high-speed serial transceivers. One high-speed serial transceiver is connected with the camera-end interface module. The other high-speed serial transceiver is connected with the acquisition card interface module. The other ends of the two high-speed serial transceivers are connected with a fiber optic module. The high-speed serial transceivers can convert parallel data into serial data and then transmit the serial data to a high-speed serial receiving terminal. In this way, the serial data are reset to be the original parallel data and then are sent out. The video fiber optic transceiver can be used as either a receiving terminal or a transmitting terminal. Therefore, during the practical application process, whether the video fiber optic transceiver must be connected with a camera or an image acquisition card is not a problem any more.

The invention discloses a three-dimensional reconstruction method for the damaged corrosive pitting morphology of a metal panel. The three-dimensional reconstruction method comprises the following steps: scanning the corrosion pit surface topography of the metal panel so as to be used as a reference picture; aligning laser emitted by a laser displacement sensor to the top of a corrosion pit, setting the indication of the laser displacement sensor as zero, translating the laser displacement sensor so as to enable the laser to be aligned to the bottom of the corrosion pit, wherein the indication of the sensor is the height difference from the top to bottom of the corrosion pit, and the height difference is the depth of the corrosion pit; and establishing an NURBS (Non-Uniform Rational B-Spline) surface by utilizing the gray scale value of the reference picture, and stretching the NURBS surface into a body, thus completing the reconstruction of the pitting corrosion area topography of a test piece. The three-dimensional reconstruction method is simple and accurate to scan and input; the measurement precision of the laser displacement sensor can achieve 10-3mm which can meet the requirement of the corrosion pit on depth less than 1mm; and the existing commodity software can be adopted for replacing the manual programming, so that the working efficiency is improved.

The invention relates to a graphene-based formation pressure sensor. The sensor comprises a shell, and two force measuring structures are symmetrically arranged in the shell, wherein one is arranged on the inner top surface of the shell, and the other one is arranged on the inner bottom surface of the shell. Each force measuring structure comprises a deformation transmission rod connected to the inner top surface or the inner bottom surface of the shell and an elastic film horizontally arranged between the inner walls of the shell, the elastic film is in contact with the end part of the deformation transmission rod, a graphene film is arranged on the surface, deviating from the end part of the deformation transmission rod, of the elastic film, and an electrode is arranged on the surface, deviating from the elastic film, of the graphene film. Electric signal transmission structures are arranged at the two ends of the elastic films and connected with the electrodes through wires. The sensor further comprises a groove formed in the bottom of the shell, and a soil-retaining and water-permeable structure arranged in the groove and used for preventing stratum soil body fine particles from entering the groove to extrude the bottom of the shell. The device can adjust the measurement range and resolution of the sensor, can detect the total water and soil pressure and the pore water pressure at the same time, and is worth popularizing.

The invention provides a detection method of a laser radar. The laser radar comprises a scanning device. The detection method comprises the following steps: S101, emitting a first group of detection light beams; S102, reflecting the first group of detection light beams to the outside of the laser radar through the scanning device, and receiving a first group of echoes of the first group of detection light beams on an obstacle to obtain a first point cloud; S103, emitting a second group of detection light beams; and S104, reflecting the second group of detection light beams to the outside of the laser radar through the scanning device, and receiving a second group of echoes of the second group of detection light beams on the obstacle to obtain a second point cloud, wherein the first point cloud and the second point cloud correspond to different detection ranges respectively. According to the invention, through time-sharing detection, control of the light intensity of the laser, the bias voltage of the detector and point cloud fusion, the problem that a distance measurement blind area exists in the laser radar of the coaxial transceiver system is effectively solved, and the resolutions of different detection ranges can be freely adjusted.

A color image sensor includes a plurality of image elements, a plurality of read gate sections, a plurality of vertical scanning charge transfer sections, and a plurality of transfer switch sections. The plurality of image elements are arranged in a matrix of rows and columns and each of the plurality of image elements generates an electric charge in response to incidence of light. The plurality of read gate sections are provided for the plurality of image elements, and each of the plurality of image elements controls transfer of the electric charge generated in a corresponding one of the plurality of image elements. Each of the plurality of vertical scanning charge transfer sections is provided for every column of the matrix to hold and transfer the electric charges transferred from a corresponding column of the plurality of read gate sections. Each of the plurality of transfer switch sections is provided for a termination section of a corresponding one of the plurality of vertical scanning charge transfer sections to control transfer of the electric charges from the corresponding vertical scanning charge transfer section. The horizontal scanning charge transfer section is provided for the plurality of transfer switch sections to hold and transfer the electric charges transferred from the plurality of vertical scanning charge transfer sections via the plurality of transfer switch sections.

The invention relates to a method for detecting foreign matters, namely a waste material especially a cutting or stamping waste material, between a bending tool and a board piece to be molded. The method comprises the following steps that the bending unit which comprises an upper tool, a lower tool, an equipment controller, at least one light source and at least one light sensor for detecting theforeign matters is provided; in an opening position of the bending unit, at least one board piece is provided in a pre-prescribed position between the upper and lower tools; and the foreign matters between the bending tool and the board piece are detected by using the light source and light sensor to measure the contour of the lower tool between the light source and the light sensor, comparing thecontour of the lower tool with a pre-prescribed reference contour and/or a theoretical contour in the equipment controller, start molding of the board piece when the contours are consistent, or interrupting or ending the method when there is a deviation therebetween.