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31results about How to "Prevent launch" patented technology

Printed circuit board arrangement for millimeter wave scanners

A printed circuit board arrangement (1) electrically connects the at least one transmission and / or reception unit (3) to at least one antenna element (4), wherein the at least one transmission and / or reception unit (3) and the at least one antenna element (4) are integrated at least partially in the printed circuit board arrangement (1). The printed circuit board arrangement (1) comprises various printed circuit boards (21, 22, 25, 26), which are connected fixedly mechanically to one another. A first part (20) of the printed circuit board arrangement (1) is formed by at least one printed circuit board (21, 22), the substrate (213,223) of said printed circuit board consisting of a first material which is suitable for high frequencies, and a second part (24) of the printed circuit board arrangement (1) is formed by at least one printed circuit board (25, 26), the substrate of which consists of a second material, which is different than the first material and which is still sufficiently well suited for a low frequency and / or for a DC voltage range.
Owner:ROHDE & SCHWARZ GMBH & CO KG

Ultraviolet lamp system and method

An ultraviolet radiation generating system and methods is disclosed for treating a coating on a substrate, such as a coating on a fiber optic cable. The system comprises a microwave chamber having one or more ports capable of permitting the substrate to travel within or through a processing space of the microwave chamber. A microwave generator is coupled to the microwave chamber for exciting a longitudinally-extending plasma lamp mounted within the processing space of the microwave chamber. The plasma lamp emits ultraviolet radiation for irradiating the substrate in the processing space. A reflector is mounted within the processing space of the microwave chamber and is capable of reflecting ultraviolet radiation to uniformly irradiate the substrate in a surrounding fashion. When the system is operating, the microwave chamber is substantially closed to emission of microwave energy and ultraviolet radiation.
Owner:NORDSON CORP

Ultrasound diagnosis apparatus

An ultrasound diagnosis apparatus having a transmission circuit which generates a transmission signal is provided. The transmission signal corresponds to a combined waveform of a trapezoidal waveform and an impulse-shaped waveform (impulse portion) . In an example transmission signal, a front slope portion, a flat portion, and a rear slope portion exist in a positive polarity side. The impulse portion has a shape which protrudes from an offset level over a base line into an opposite polarity side. Because the center frequency of the trapezoidal waveform is near the DC component, the trapezoidal waveform can substantially be ignored. The impulse portion has a large amplitude, but because the impulse portion exists over both polarities, there is no need to apply a special high voltage countermeasure for each polarity in designing the transmission circuit. A trapezoidal waveform of an opposite polarity may be added in front of the trapezoidal waveform.
Owner:HITACHI HEALTHCARE MFG LTD

Panel display having integrated back grid structure and its manufacturing technology

This invention relates to a panel display with an integrated back grating structure and its process method including a sealed vacuum cavity composed of a cathode panel, an anode panel and surrounding glasses, anode conduction strips set on the anode panel and a fluorescence powder layer prepared on the conduction strips, a supporting wall structure between the two panels and getters and an integrated back grating structure prepared on the cathode panel containing carbon nm tube cathode and controlling its electronic emission.
Owner:ZHONGYUAN ENGINEERING COLLEGE

Equipment and method for controlling laser light transmission

The invention relates to laser light transmission equipment comprising a laser, a power supply, a light path and a laser identification and authentication unit, wherein the laser is respectively connected with the power supply and the light path, is used for outputting a power authentication code to the power supply, and controls the laser light to be output to the light path according to the power supply; the power supply is used for receiving the power authentication code of the laser, authenticates the laser, controls current which is output to the laser, and ensures the laser to transmit laser light; the light path is used for laser transmission in the equipment; and the laser identification and authentication unit is used for receiving the authentication code corresponding to the laser light from the light path, determining that the authentication code is matched with the laser identification and authentication unit and adjusting the current which is output to the laser from the power supply. The invention ensures that the laser can realize high-power output only when the laser is arranged in the equipment matched with the laser and prevents the laser light with high-power output from being transmitted towards open space randomly.
Owner:北京市世嘉律师事务所

Semiconductor carrier type judgment and band gap measurement method

The invention discloses a semiconductor carrier type judgment and band gap measurement method. A Kelvin probe method is used to measure a work function of an extrinsic semiconductor material at different temperatures, the change law of a Fermi level of the material along with temperature is determined, and the carrier type is judged; and on the basis, in combination of the relationship of the extrinsic semiconductor material work function along with temperature changes, the change relationship between the Fermi level caused by electron thermal excitation and the relative position of a conduction band and a valence band is analyzed, and the band gap is solved. The measurement method disclosed in the invention is based on a semiconductor energy band theory, compared with the conventional optical band gap measurement method, the method of the invention can measure the band gap of a non-transmissive semiconductor material while the accuracy is greatly improved.
Owner:FUJIAN NORMAL UNIV

Light reflective sunshading and thermal insulating composite film

InactiveCN1408541ANo corrosion chemical reaction occursAlways maintain a glossy finishMetal layered productsInfraredComposite film
The reflective sunshading and thermal insulating composite film includes transparent film layer and aluminium layers coated to the transparent layer and features that the aluminum layers include one upper aluminium layer near the transparent layer and lower aluminium layer separated from the upper aluminium layer by a mocroporous foamed layer and there is one protecting layer on the other side of the lower aluminium layer. The composite film of the present invention is thin, soft, light tight and water tight and may be wound. It has an infrared reflecting rate of 61-75% and 5000-10000 nm wavelength earth heat reflecting rate of 37-52% and its use can saving power consumption of green house by 45-70%.
Owner:上海农园绿色工程有限公司

Wireless mobile communication system effectively applied to office environment

The invention relates to wireless communication technologies and multimedia communication technologies, in particular to a wireless mobile communication system effectively applied to an office environment. The wireless mobile communication system can solve the problem that in major hotels, restaurants, commercial buildings, large and medium residential estates, diggings and the like, blind areas exist in terminal wireless communication systems due to channel fading. According to the wireless mobile communication system, the modern electronic technology and advanced communication means are utilized, a low-power and multi-station common wire connecting mode which is the same in sending and receiving frequency and can be used by all stations is ingeniously used, and the blind area problem occurring in interphones in various complex environments is well solved. According to application practices of a plurality of star-grade restaurants, hotels, commercial buildings and residential estates, the effect is good. According to the system, novel auxiliary equipment of the wireless communication system can be developed according to different requirements of clients and a new field is opened for expanding and perfecting an existing wireless communication system.
Owner:ZHENJIANG KUN QUAN ELECTRONICS TECH

Millimeter wave super-regeneration receiver with high data rate

ActiveCN113992221AInhibition Residual ProblemsLow Intersymbol InterferenceTransmissionRadio frequencyInformation technology
The invention discloses a millimeter wave super-regenerative receiver with a high data rate, which relates to a millimeter wave transceiving technology of a new generation of information technology. The scheme is provided for solving the problems of small dynamic range, supe-regenerative oscillator SILO residue, pre-stage circuit inter-code crosstalk and the like in the prior art. A low-noise amplifier is directly connected with a radio frequency input signal; the super-regenerative oscillator adopts a cross-coupled oscillation structure, and a symmetrical MOS tube switch is connected in parallel at a resonant cavity and is controlled by a quenching signal. The receiver has the advantages that the receiver can work at a high code element rate; the dynamic range is relatively large; high-order digital modulation can be realized; spectrum leakage of the receiver is prevented; and the receiver is relatively simple and has relatively high flexibility.
Owner:SOUTH CHINA UNIV OF TECH

Protection circuit and method and device for controlling same

The invention discloses a protection circuit and a method and device for controlling the same, and aims to prevent voltage disturbance from influencing functions of electronic devices when a battery is put into a battery compartment, and improve the safety performance of the battery. The control circuit comprises a first switch, a second switch, a first resistor and a time delay circuit, wherein when a battery pack enters a working state, the first switch is closed to ensure that a grid electrode of the second switch obtains a critical voltage of a closed state and then enters the closed state after the current output by a cell passes through the time delay circuit and after a preset delay time; an anode of the cell is conducted with an anode of the battery pack, so that the voltage disturbance is prevented from influencing the functions of the electronic devices when a battery is put into a battery compartment; and when the battery pack is not in the working state, the first switch is turned off, the voltage of the grid electrode of the second switch is reduced to the critical voltage when the second switch enters the closed state, then the second switch enters a turned-off state, and the current output by the anode of the cell is turned off, so that the safety performance of the battery when the battery is not put into the battery compartment is improved.
Owner:XIAOMI INC

Laser processing device

Provided is a laser processing device capable of preventing laser light from leaking out to the outside of the housing by emitting the laser light to the processing target with the camera detached. The laser processing device includes a laser generator; a scanning optical system for scanning the laser light with respect to a workpiece; a housing frame for accommodating the scanning optical system; a camera for photographing the workpiece, the camera being removably attached to the housing frame and having a light receiving axis branched from an emission axis of the laser light; a camera cover removably attached to the housing frame to cover the camera; a limit SW for detecting detachment of the camera cover from the housing frame; and a laser output control section for prohibiting the emission of the laser light to the workpiece based on a cover detection signal.
Owner:KEYENCE

Electromagnetic protection device

ActiveCN112423573ASolve the problem of the influence of electromagnetic protection effectPrevent launchLocalised screeningInterference resistanceStructural engineering
The invention provides an electromagnetic protection device, and the device comprises a protection shell, a protection cover, a protected assembly, a connector and a shielding cover. The protective shell is fixedly connected with the protective cover to form a first space; the protected assembly is located in the first space, and the connector is connected to one end of the protected assembly; theshielding case isolates the protected assembly from the connector; the protective cover is provided with a first protective part close to the shielding cover, the first protective part is provided with at least one groove, and the end, close to the protective cover, of the shielding cover is contained in the first protective part. A second protection part is arranged at the position, close to theshielding cover, of the protection shell and provided with at least one groove, and the end, close to the protection shell, of the shielding cover is contained in the second protection part. According to the technical scheme, the problem of electromagnetic radiation and interference resistance of electronic devices such as electronic devices and PCBs can be effectively solved, and electromagneticprotection is achieved.
Owner:HELLA SHANGHAI ELECTRONICS

Wireless communication system applied to building blind area environment

The invention relates to a wireless communication system applied to a building blind area environment, so that a problem that a blind area of a wireless communication system of a terminal occurs caused by channel fading in hotels, restaurants, commercial buildings, large-scale and middle-scale residential estates, mine lots or tunnels and the like can be solved. According to the system, the modern electronic technology and the advanced communication means are employed and the small-power, multi-station, receiving-transmitting common-frequency, and all-station normal lead connection way is utilized skillfully, so that a problem of interphone blind area occurrence in various complex environments can be well solved. The application practice of multiple star-grade hotels and restaurants, commercial buildings, and residential estates has demonstrated that the effect of the system is good.
Owner:ZHENJIANG CITY XINGHE INTERNET OF THINGS SCI & TECH

A power-saving method of digital trunking channel machine

The invention discloses a power-saving method of a digital cluster channel device, which belongs to the field of wireless communication, and especially relates to a digital cluster communication system device. The digital cluster channel device adopts the mode of time division multiplexing. The data block sent at each time slot goes with an emission allowing sign of the current time slot and an emission allowing sign of the next time slot. The switching-on / off status of a transmitter can be controlled through the combination of the two signs. The ineffective output power can be closed, and a real-time transmit power control mechanism based on time slot can be realized. The power efficiency and power-saving capability of the channel device can be improved.
Owner:HEBEI FAREAST COMM SYST ENG

Ultrasound diagnosis apparatus

An ultrasound diagnosis apparatus having a transmission circuit which generates a transmission signal is provided. The transmission signal corresponds to a combined waveform of a trapezoidal waveform and an impulse-shaped waveform (impulse portion) . In an example transmission signal, a front slope portion, a flat portion, and a rear slope portion exist in a positive polarity side. The impulse portion has a shape which protrudes from an offset level over a base line into an opposite polarity side. Because the center frequency of the trapezoidal waveform is near the DC component, the trapezoidal waveform can substantially be ignored. The impulse portion has a large amplitude, but because the impulse portion exists over both polarities, there is no need to apply a special high voltage countermeasure for each polarity in designing the transmission circuit. A trapezoidal waveform of an opposite polarity may be added in front of the trapezoidal waveform.
Owner:HITACHI HEALTHCARE MFG LTD

A protection circuit and its control method and device

The invention discloses a protection circuit and a method and device for controlling the same, and aims to prevent voltage disturbance from influencing functions of electronic devices when a battery is put into a battery compartment, and improve the safety performance of the battery. The control circuit comprises a first switch, a second switch, a first resistor and a time delay circuit, wherein when a battery pack enters a working state, the first switch is closed to ensure that a grid electrode of the second switch obtains a critical voltage of a closed state and then enters the closed state after the current output by a cell passes through the time delay circuit and after a preset delay time; an anode of the cell is conducted with an anode of the battery pack, so that the voltage disturbance is prevented from influencing the functions of the electronic devices when a battery is put into a battery compartment; and when the battery pack is not in the working state, the first switch is turned off, the voltage of the grid electrode of the second switch is reduced to the critical voltage when the second switch enters the closed state, then the second switch enters a turned-off state, and the current output by the anode of the cell is turned off, so that the safety performance of the battery when the battery is not put into the battery compartment is improved.
Owner:XIAOMI INC

Light emitter, light emitting device, optical device, and information processing apparatus

Disclosed are a light emitter, a light emitting device, an optical device, and an information processing apparatus. The light emitter includes: a substrate; a driving section provided on the substrate; a light source that is provided on the substrate and is driven by the driving section; a cover section through which light emitted from the light source is transmitted and that is disposed in an optical axial direction of the light source; and a support section that is provided on a part of the substrate excluding a part between the driving section and the light source and supports the cover section.
Owner:FUJIFILM BUSINESS INNOVATION CORP

Planar display device with float-grid structure and its production

InactiveCN1897216AEliminates secondary electron emissionSuppression of gate runaway phenomenaTube/lamp screens manufactureControl electrodesControl electronicsElectron transmission
A flat display and the manufacture craft with the floating grid structure, including: the sealed vacuum cavity that forms by the cathode board, the anode board and the glasses encircling frame; the anode board with the photoetching conducting layer and the fluorescent layer preparing on it; the cathode board with the cathode conducting layer, the vegetal carbon nanometer tube cathode and the grid conducting layer that controls the electron transmission; the support wall structure and the getter accessorial component; fixes floating grid structure for controlling the carbon nanometer tube cathode with the strong grid structure on the cathode board, can improve the manufacture successful rate of the whole parts, reduce the manufacture cost and simplify the manufacture craft, enhance the controlling effect of the grid structure to the carbon nanometer tube cathode.
Owner:ZHONGYUAN ENGINEERING COLLEGE

Integrated safety apparatus and dynamic protection zone system

Methods, systems, and apparatuses for activating an on-firearm locking system of a firearm in a firearm safety apparatus and a dynamic variable protection system. A determination may be made that a firearm with an on-firearm locking system is within a predetermined distance of a target affixed with a transmitter / receiver safety device. The firearm may be tracked while the firearm is within the predetermined distance of the target. A no-shoot arc for the firearm may be calculated for the firearm and a command may be sent to activate the on-firearm locking system of the firearm when the firearm is within a no-shoot zone surrounding the target to prevent the firearm from being fired into the no-shoot zone.
Owner:412 TECH INC
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