9 results about "Excitation pattern" patented technology

The invention relates to the technical field of semiconductor wafer defect detection, and discloses a semiconductor wafer defect detection method and system, and the method comprises the steps: generating a spatial staggered excitation pattern, and projecting the spatial staggered excitation pattern to the surface of a semiconductor wafer, the spatial staggered excitation pattern comprising an excited region and an unexcited region; capturing an optical image of the surface of the semiconductor wafer; according to the optical image, calculating the difference between the optical signal intensity of the excited area and the optical signal intensity of the adjacent non-excited area in the optical image; according to the difference, carrying out background deduction on the optical image so as to display a potential defect signal; and identifying the manifested potential defect signal. Therefore, the method can significantly improve the sensitivity, accuracy and efficiency of semiconductor wafer defect detection, thereby effectively improving the yield and reliability of semiconductor products, and reducing the production cost.

A method of processing audio, the method comprising: receiving audio data for playback on a playback device, the audio data comprising a target audio component; receiving masked audio data; obtaining hearing loss data associated with a listener; obtaining back discharge level data; calculating a target excitation pattern based on the target audio component and the return discharge level data; calculating a masked excitation pattern based on the masked audio data; calculating a signal gain based on the target excitation pattern, the masked excitation pattern, and the hearing loss data; and applying the signal gain to the target audio component to produce a compensated target audio component.

This invention discloses a small, low-profile substrate-integrated waveguide filter antenna for the W-band, relating to antenna technology and addressing problems in existing technologies. A rectangular resonant cavity is formed by metal pillars penetrating from the upper copper layer to the bottom copper layer; one end of the rectangular resonant cavity is open as a signal input terminal; four circular holes are arranged in a row and column pattern within the rectangular resonant cavity on the upper copper layer, with a metal circular patch within each hole serving as the corresponding resonator; the four circular holes have equal diameters; the rectangular resonant cavity with the four circular holes is used to excite the TE12 mode; the TE12 mode further excites the TM11 mode on the four metal circular patches (resonators); two of the four resonators are set to diameter D1, and the other two are set to diameter D2; two radiation nulls are generated based on an impedance mismatch method. The advantages are that it achieves a fusion design of the antenna and filter, the entire filter antenna design is compact, it generates two radiation nulls, and the gain reaches 11 dBi.

The application provides a dual-frequency dual-mode dual-polarized antenna based on mode modulation and application, and belongs to the technical field of antennas. The antenna is composed of a flexible dielectric substrate, a circular metal radiation patch, a metal ground and a feed point. The key innovation lies in a plurality of groove structure groups etched on the radiation patch, including a center groove, a first groove group, a second groove group, a T-shaped groove group and a circular groove group. The groove structure groups are designed to be able to excite mode and mode, so that the antenna realizes directional circular polarization mode at a 2.4 GHz frequency band and omnidirectional linear polarization mode at a 5.7 GHz frequency band. The application adopts the above-mentioned dual-frequency dual-mode dual-polarized antenna based on mode modulation and application, and through optimization of groove parameters and feed point positions, realizes efficient work of dual-frequency bands, solves polarization mismatch problems and realizes intelligent adaptation of dual modes.

To provide an information recording body, a label, a program, a method for manufacturing the information recording body, an authenticity determination device, and an authenticity determination system which are devised so as to determine illegal duplication of a code by using a moire phenomenon.SOLUTION: In the information recording body 20 in which a code layer 21 formed by a first color and a pattern layer 22 formed by a color different from the first color are arranged on a base 10, the code layer 21 constitutes a code area having a code image, the pattern layer 22 constitutes a pattern area having one or more determination patterns, at least a part of the code image is formed so as to overlap with a partial area of the determination pattern in a plan view, and the determination pattern is a moire excitation pattern for exciting moire by overlapping of a first periodic pattern and a second periodic pattern.SELECTED DRAWING: Figure 2

A device and method with defect detection are provided. The device includes a sensing assembly comprising a plurality of operation elements and a controller; and one or more processors, wherein the controller is configured to: for each of predetermined excitation patterns, activate at least one operation element using at least one control signal to propagate at least one acoustic wave toward a target object, wherein the at least one acoustic wave has at least one frequency based on the at least one operation element; and acquire a plurality of response signals corresponding to reflected waves sensed by the sensing assembly, the reflected waves being reflections of the at least one acoustic wave reflected from the target object, wherein the one or more processors are configured to: analyze the plurality of response signals using an artificial intelligence (AI) model, wherein the AI model is trained to detect defects in the target object based on inputs comprising the response signals respectively corresponding to the excitation patterns.

A system may include a first emitter that includes a first mixed halide perovskite film that includes a first type mixed halide perovskite material that possesses a first usable photoemission wavelength range. The system may include a first excitation device that is positioned adjacent to the mixed halide perovskite film based on an excitation mode of the first excitation device. The first excitation device is configured to tune, based on a first instruction, the first mixed halide perovskite film to emit a first photoemission peak within the first usable photoemission wavelength range, and tune, based on a second instruction, the first mixed halide perovskite film to emit a second photoemission peak within the first usable photoemission wavelength range. The second photoemission peak has at least one of a different width or center within the first usable photoemission wavelength range than the first photoemission peak.

The application relates to the technical field of nondestructive testing of power equipment, and discloses a method and system for detecting structural defects of a post insulator based on a photoacoustic pressure effect, which comprises the following steps: according to the installation position of the post insulator, a laser and a sound receiving device are configured, and a focused and directed dynamic adjustment is combined with response environment parameters; two groups of sound signals are obtained by adopting a double-pulse differential excitation mode, and subtraction is performed to suppress common-mode noise; the differential sound signals are divided into subbands according to frequencies, periodic coherent superposition is performed to improve a signal-to-noise ratio; effective characteristic frequency bands are screened according to subband energy density and phase stability; defect scales are determined by combining characteristic frequency band parameters, and a defect space position is located by utilizing a time difference of multiple receivers; and finally, the position is registered to an insulator three-dimensional digital model to output physical coordinates. The application can effectively overcome the problems of signal attenuation and environmental interference at a long distance, and improve defect recognition reliability and positioning accuracy.

To simplify the configuration for detecting the rotor's non-tracking state in a stepping motor for an electric valve. [Solution] The electric valve control device 100 controls an electric valve having a rotatable rotor, a stator which together with the rotor constitutes a stepping motor, and a mechanism which changes the valve opening degree by the rotational motion of the rotor. It includes a rotation control unit 120 which controls the rotation of the rotor by inputting pulses for each of the consecutive steps to the coil of the stator and according to the excitation pattern of the pulses, a flyback time measurement unit 122 which measures the flyback time until the flyback voltage generated in the coil at the zero-cross step of the pulse drops to a predetermined standard, and a state determination unit 124 which determines whether or not the rotor is in a non-following state in the rotation of the rotor and is not following the excitation pattern, based on the flyback time.