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30results about How to "Meet the requirements of the transmission" patented technology

Air floatation conveyer

ActiveCN104495391ASolve the drive ability is smallSolve the problem of easy disturbance to the workpieceNon-mechanical conveyorsStress concentrationSurface stress
The invention discloses an air floatation conveyer comprising a flat plate which is provided with a plurality of symmetrically distributed recesses. Each recess is internally and pairwise provided with air inlets and air outlets both in the vertical direction; the air inlets and the air outlets are connected with compressed air incoming pipes and compressed air outgoing pipes, respectively; each compressed air incoming pipe and each compressed air outgoing pipe are communicated with positive and negative pressure sides of an air source through electromagnetic reversing valves, respectively. The air horizontally flows in the recesses, a workpiece can be driven to move by making greatest use of vicious force of the air flow, a high motion acceleration is acquired, the problem that the existing air flotation conveyer has low driving capacity and easily causes interference to the workpiece is solved, and electrostatic pollution and workpiece surface stress concentration can be lessened.
Owner:阿尔贝斯(长兴)科技有限公司

Construction method for passenger transport dedicated line bolster embedded large-size ballastless track

The invention discloses a construction method of long sleeper buried ballastless turnouts with large size of a passenger transport dedicated line, which comprises: constructing turnouts region base concrete, surveying and setting out of the construction, binding rail bed plate bottom reinforcement, installing a turnout translation trolley, hanging turnout rail sections and unloading, pushing the translation trolley in the position and connecting turnout, coarsely adjusting the turnout, installing a regulation stent and dissembling the translation trolley, binding rail bed plate reinforcement and installing a formwork, fine adjusting and positioning the turnout, pouring rail bed plate concrete, adjusting the formwork and dissembling the stent, welding the turnout steel rail and dispersing stress and closing treatments. The method of the invention has the advantages that the installed long sleeper buried ballastless steel rail panel of the passenger transportation dedicated line is stable and free from deformation; the rail concrete meets the requirements of China made rail circuit transmission; the rail is linear and is provided with high regularity and high accuracy of construction surveying and controlling; steel rail welding joint is of good quality and high regularity.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD

Wide-band micro-wave kit shaped energy delivery window

A boardband microwave box-shaped energy transporting window, which belongs to the technical field of microwave device, relates to a microwave energy transporting window in microwave tubes. The microwave energy transporting window is composed of two rectangular waveguide segments (1), a circular waveguide segment (2) and a dielectric window disk (3), wherein the rectangular waveguide segments (1) are respectively connected to both ends of the circular waveguide segment (2); the dielectric window disk (3) is hermetically welded at the middle of the circular waveguide segment (2); and the diameter of the circular waveguide segment (2) is determined according to the cutoff frequency formula of TE11'O'mode to make the cutoff frequency of the TE11'O' mode in the work band range of the box-shaped energy transporting window. The boardband microwave box-shaped energy transporting window can work in the transmission state of the circular waveguide TE11'O'mode and can work in cutoff state, thereby greatly widening the work bandwidth of the box-shaped window. Meanwhile, the size and the volume of the box-shaped window is greatly reduced, and the generation of high-order mode can effectively suppressed.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Non-contact transporting and positioning platform device and control method

The invention discloses a non-contact transporting and positioning platform device and a control method. The device comprises a transporting platform, a fixing platform located below the transporting platform, and a base located below the fixing platform. The fixing platform is connected with the base through a fixing platform support. The transporting platform is provided with a plurality of grooves. Each groove is provided with an air inlet hole and an air outlet hole. Each air outlet hole is connected with an air inlet hose. Each air inlet hose is connected with a positive-pressure air source. Each air outlet hole is connected with an air outlet hose, and each air outlet hose is connected with a negative-pressure air source. According to the non-contact transporting and positioning platform device, due to the fact that air is in a horizontal flowing state in the grooves, the airflow viscosity force can be utilized to the maximum degree to drive a workpiece to move, the high motion acceleration is obtained, and complete non-contact can be truly achieved. When airflow makes contact with the semiconductor workpiece, static pollution is not likely to be generated, and stress concentration is not likely to be caused near a contact point.
Owner:阿尔贝斯(长兴)科技有限公司

Deep-submicron CMOS process inductively compensated photoelectric detector and its manufacturing method

InactiveCN1937232AProcess modificationImproved dark current characteristicsSolid-state devicesSemiconductor/solid-state device manufacturingPhotovoltaic detectorsDetector array
The photo detector includes following parts: a P substrate; a quadratic N trap area prepared on P substrate; being prepared on N trap area, an annular shallow-channel isolation area is encircled by annular N trap area; being prepared on N trap area, a P+ region is encircled by annular shallow-channel isolation area so as to constitute anode of photo detector array; being prepared on N trap area, an annular N+ area is encircles the shallow-channel isolation area; being prepared on P substrate, an annular second P+ encircles the quadratic N trap area; a plane spiral metal electrode connects each unit block in array form one by one in first P+ area; an annular metal electrode is connected to N+ area; a annular metal electrode is connected to second P+ area.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI

Non-contact transmission and positioning platform device and control method thereof

ActiveCN105742220ALarge motion accelerationNot prone to electrostatic pollutionConveyorsSemiconductor/solid-state device manufacturingStress concentrationPositive pressure
The invention discloses a non-contact transmission and positioning platform device and a control method thereof. The device comprises a transmission platform, a fixed platform and a base, wherein the fixed platform is arranged under the transmission platform, the base is arranged under the fixed platform, the fixed platform is connected with the base by a fixed platform support, a plurality of grooves are formed in the transmission platform, each groove is provided with an air inlet hole and an air outlet hole, the air inlet hole is connected with an air inlet hose, the air inlet hose is connected with a positive pressure gas source, the air outlet hole is connected with an air outlet hose, and the air outlet hose is connected with a negative pressure gas source. In the non-contact transmission and positioning platform device, air is in a horizontal flowing state in the grooves, thus, a workpiece can be driven to move to the greatest extent by means of an airflow viscosity force, a relatively high moving acceleration speed is acquired, complete non contact in a real sense can be achieved, static pollution is difficult to generate when airflow is in contact with a semiconductor workpiece, and concentrated stress at a position near to a contact point is difficult to cause.
Owner:钟伟

Track positioning system and information transmission coding method

The invention discloses a track positioning system and an information transmission coding method. The positioning system comprises an intelligent terminal, a cloud server and an information device. The information device comprises an NFC chip and a device shell, the NFC chip is embedded in the device shell, the NFC chip of the information device carries out solidification storage on the identity recognition information of a possessor according to the transfer memory coding mode, the intelligent terminal supports the NFC induction function, the intelligent terminal and the information device are in near field wireless communication, the intelligent device is an induction device, the information device is a passive device, and the intelligent terminal and the cloud server carry out both-way data transmission through the 3G wireless network. According to the information device, power supply can be achieved without additionally arranging a power source, and the inconvenience caused by charging or battery changing is avoided. The intelligent terminal does not need to be provided with any App, and track positioning is achieved by inducting the NFC chip.
Owner:ZHENJIANG COLLEGE

Video transmission code rate self-adaption method and video transmission code rate self-adaption device based on LTE (Long Term Evolution)

The invention discloses a video transmission code rate self-adaption method and a video transmission code rate self-adaption device based on LTE (Long Term Evolution), and relates to the technical field of wireless video monitoring. The method comprises the steps of S1, acquiring the current bandwidth and current activated user information in a target cell; S2, determining the total number of video monitoring paths according to the current activated user information; and S3, calculating the optimal video transmission code rate according to the current bandwidth and the total number of video monitoring paths, and adjusting the video transmission code rate of each video monitoring device in the target cell according to the optimal video transmission code rate. According to the invention, the optimal video transmission rate is calculated so as to carry out adjustment on the video transmission code rate of each video monitoring device, thereby not only being capable of meeting requirements of video transmission, but also being capable of effectively utilizing the wireless network bandwidth. The method and the device disclosed by the invention are applicable to LTE based wireless video remote monitoring, and are particularly applicable to application scenarios such as subways, high-speed rails and the like where the real-time video transmission concurrence is great in fluctuation is great and the wireless channel bandwidth is high in variation.
Owner:POTEVIO INFORMATION TECH

Outer-loop power control method

The present invention discloses an outer-loop power control method comprising presetting the duration of the adjustment period and the target block error ratio (BLER)of outer-loop power control; calculating, on the real-time basis, the number of accumulated absolute error blocks of transmission data blocks during the current outer-loop power control adjustment period, and directly up-regulating the target value of signal to interference ratio (SIR Target) and ending the current outer-loop power control adjustment period and starting the next outer-loop power control adjustment period if the number of accumulated absolute error blocks is greater than the preset direct up-regulation threshold; calculating the BLER mean value within the outer-loop power control adjustment period when any outer-loop power control adjustment period reaches to the duration and adjusting SIR Target based on the BLER mean value and preset target BLER. SIR Target can be adjusted in time and the convergence speed thereof can be improved through the method disclosed in the invention.
Owner:TD TECH COMM TECH LTD

Processing method of PCB line sidewall

The present invention provides a processing method of a PCB line sidewall. The method comprises the steps of carrying out at least one micro-etching process on the line sidewall of a substrate, detecting whether the flatness of the line sidewall is qualified or not, stopping the micro-etching process if the flatness is qualified, and carrying out micro-etching process on the line sidewall if the flatness is unqualified until the flatness is qualified. According to the method, the plated copper of the line sidewall is processed for multiple times by using a micro-etching solution, the degree of each time of etching is controlled strictly, through continuously detecting the flatness of the line sidewall, whether the flatness is qualified or not is determined, the etching is stopped as long as the qualified flatness of the line sidewall is detected, in this way the flatness of the PCB line sidewall can be ensured, thus the signal loss of a prepared PCB in a signal transmission process is reduced, and the requirements of PCB signal transmission by different fields can be satisfied.
Owner:CHONGQING FOUNDER HI TECH ELECTRONICS +1

N-type organic semiconductor material based on boron and nitrogen coordinate bond as well as preparation method and application of n-type organic semiconductor material

The invention relates to an n-type organic semiconductor material based on a boron and nitrogen coordinate bond as well as a preparation method and application of the n-type organic semiconductor material, belongs to the technical field of n-type organic semiconductor materials, and solves the technical problems of lagged development, fewer types and quantities and low migration rate of the n-typeorganic semiconductor material compared with a p-type organic semiconductor material in the prior art. The chemical structural formula of the n-type organic semiconductor material is shown as a formula (I), a formula (II), a formula (III) or a formula (IV) as shown in the specification, wherein n and m respectively express integers between 0 to 20, and X is O or S. The organic semiconductor material has relatively low LUMO / HOMO energy level and electronic transmission capability within the range of -3.65 eV and -4.58 eV, and is suitable for being used for preparing an organic field effect transistor device with high migration rate as a charge transmission layer.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Construction method for passenger transport dedicated line bolster embedded large-size ballastless track

The invention discloses a construction method of long sleeper buried ballastless turnouts with large size of a passenger transport dedicated line, which comprises: constructing turnouts region base concrete, surveying and setting out of the construction, binding rail bed plate bottom reinforcement, installing a turnout translation trolley, hanging turnout rail sections and unloading, pushing the translation trolley in the position and connecting turnout, coarsely adjusting the turnout, installing a regulation stent and dissembling the translation trolley, binding rail bed plate reinforcement and installing a formwork, fine adjusting and positioning the turnout, pouring rail bed plate concrete, adjusting the formwork and dissembling the stent, welding the turnout steel rail and dispersing stress and closing treatments. The method of the invention has the advantages that the installed long sleeper buried ballastless steel rail panel of the passenger transportation dedicated line is stable and free from deformation; the rail concrete meets the requirements of China made rail circuit transmission; the rail is linear and is provided with high regularity and high accuracy of construction surveying and controlling; steel rail welding joint is of good quality and high regularity.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD

Blockchain-based narrowband transmission method and device

The invention discloses a blockchain-based narrowband transmission method and device, and the method comprises the steps: obtaining a transmission message of a first block in a previous node through a narrowband, wherein the transmission message comprises an instruction code, an instruction completion identifier, and a data load; counting a count value in the instruction completion identifier of the first block, wherein the count value is the remaining value of the node; analyzing the instruction code of the first block, and determining the instruction code of a second block in the node; determining a data load of a second block in the node according to the data load of the first block; stopping counting the count value in the instruction completion identifier of the first block, and determining an instruction completion identifier of the second block in the node; and generating a transmission message of the second block in the node according to the instruction code, the data load and the instruction completion identifier of the second block in the node, and broadcasting the transmission message of the second block in the node to other nodes through the narrowband.
Owner:SHANDONG INSPUR SCI RES INST CO LTD

High-speed fault-tolerant image transmission method based on pest and disease damage research

The invention relates to a high-speed fault-tolerant image transmission method based on pest and disease damage research. Specifically, images of crop diseases and insect pests are encrypted; the encrypted images of the crop diseases and insect pests are split according to a polynomial rule; the size of each split image information block is smaller than that of the original image; then, and the split image information blocks are sent to an image receiving end by the image sending end; after the image receiving end acquires the transmitted image information block, the image information block israndomly selected to recover the disease and pest image; when a recovered image is abnormal, the image information block is selected to recover the disease and pest image again until the encrypted image information is decrypted to obtain the disease and pest image. The method is reasonable in conception, simple in step, high in image transmission efficiency and low in probability that the image is attacked or damaged; the method has an image lossless recovery function, and is high in safety in the image transmission process.
Owner:CHENGDU UNIV OF INFORMATION TECH

Multi-level resource dynamic allocation method in VPN environment

The invention discloses a multi-level resource dynamic allocation method in a VPN environment, and the method comprises the steps: obtaining a tenant level and a service type corresponding to the tenant level, and determining differential service code points based on the tenant level and the service type; carrying out transparent transmission on the differential service code points in a tunnel mode, and determining outer-layer differential service code points; and performing bandwidth allocation and flow control on the port of the IPSEC VPN based on the outer-layer differential service code points. According to the scheme, the requirement for network transmission in the VPN environment of a cloud data center is met, bandwidth allocation and flow control of IPSEC VPN at an entrance and an exit of the cloud data center are achieved through multi-level resource allocation and identification of the service flow and identification in a VPN network, the network resource utilization rate in the VPN environment of the cloud data center is increased, and the network transmission quality is improved.
Owner:武汉船舶通信研究所

A control method for a contactless transport and positioning platform device

ActiveCN105712089BLarge motion accelerationNot prone to electrostatic pollutionControl devices for conveyorsCharge manipulationStress concentrationPositive pressure
The invention discloses a non-contact transporting and positioning platform device and a control method. The device comprises a transporting platform, a fixing platform located below the transporting platform, and a base located below the fixing platform. The fixing platform is connected with the base through a fixing platform support. The transporting platform is provided with a plurality of grooves. Each groove is provided with an air inlet hole and an air outlet hole. Each air outlet hole is connected with an air inlet hose. Each air inlet hose is connected with a positive-pressure air source. Each air outlet hole is connected with an air outlet hose, and each air outlet hose is connected with a negative-pressure air source. According to the non-contact transporting and positioning platform device, due to the fact that air is in a horizontal flowing state in the grooves, the airflow viscosity force can be utilized to the maximum degree to drive a workpiece to move, the high motion acceleration is obtained, and complete non-contact can be truly achieved. When airflow makes contact with the semiconductor workpiece, static pollution is not likely to be generated, and stress concentration is not likely to be caused near a contact point.
Owner:阿尔贝斯(长兴)科技有限公司

Electric connector

The invention relates to an electric connector, which has an HDMI 2.1 specification, and comprises an insulating body, a plurality of terminals and a shell, the terminal is arranged on the insulation body, and the shell partially wraps the insulation body and the terminal. The terminals comprise ten terminals in the upper row of the column and nine terminals in the lower row of the column, and the ten terminals and the nine terminals are staggered in the arrangement direction. And the pins of the ten terminals are a first terminal Data < 2 + >, a third terminal Data < 2->, a fifth terminal Data Shield, a seventh terminal Data < 0 + >, a ninth terminal Data < 0->, an eleventh terminal Data < 3 > Shield, a thirteenth terminal CEC, a fifteenth terminal SCL, a seventeenth terminal DDC / CEC Ground and a nineteenth terminal Hot Plug Detec1 in sequence along the arrangement direction. The pin positions of the nine terminals are a second terminal Data2 Shield, a fourth terminal Data1 +, a sixth terminal Data1-, an eighth terminal Data0 Shield, a tenth terminal Data3 +, a twelfth terminal Data3-, a fourteenth terminal Utilization, a sixteenth terminal SDA and an eighteenth terminal + 5V Power in sequence in the arrangement direction.
Owner:连展科技电子(昆山)有限公司

A Method of Area Protection Partition Considering Communication Constraints

The invention discloses an area protection partitioning algorithm giving consideration to communication constraint, and the algorithm faces the technical requirements of the area protection quick movement and reliability, gives consideration to the maximum jump number factors of substations and a main station, combines with the balance of the partitioned areas, and proposes an area protection mainstation selection model of a permutation and combination prioritizing method based on a Floyd shortest path algorithm. Furthermore, a substation dividing model is built according to the multifactor indexes affecting the communication time delay of area protection. In a dividing process of the substations, the algorithm gives consideration to the impact from an area protection communication network topological relation and length and bandwidth through combining with the technology of the graph theory, and achieves the reasonable distribution of the substations. N-1 channel faults in a rear preset region are caused for the partitioned area, and the impact from communication time delay in the communication tortuous process of the substations is analyzed, thereby achieving the further correction and supplement of the partitioning strategy. The algorithm effectively irons out the defects of a conventional method which needs a large amount of manual judgment operations and determination operations, achieves the partitioning area balance, and is smaller in communication time delay in a region.
Owner:CHINA THREE GORGES UNIV

LTE-based video transmission code rate adaptive method and device

The invention discloses a video transmission code rate self-adaption method and a video transmission code rate self-adaption device based on LTE (Long Term Evolution), and relates to the technical field of wireless video monitoring. The method comprises the steps of S1, acquiring the current bandwidth and current activated user information in a target cell; S2, determining the total number of video monitoring paths according to the current activated user information; and S3, calculating the optimal video transmission code rate according to the current bandwidth and the total number of video monitoring paths, and adjusting the video transmission code rate of each video monitoring device in the target cell according to the optimal video transmission code rate. According to the invention, the optimal video transmission rate is calculated so as to carry out adjustment on the video transmission code rate of each video monitoring device, thereby not only being capable of meeting requirements of video transmission, but also being capable of effectively utilizing the wireless network bandwidth. The method and the device disclosed by the invention are applicable to LTE based wireless video remote monitoring, and are particularly applicable to application scenarios such as subways, high-speed rails and the like where the real-time video transmission concurrence is great in fluctuation is great and the wireless channel bandwidth is high in variation.
Owner:POTEVIO INFORMATION TECH CO LTD

Instant messaging method realized based on websocket

PendingCN113572678ARealize instant messagingRealized Instant Messaging Method to Solve Instant MessagingData switching networksWebSocketMobile end
The invention discloses an instant messaging method realized based on websocket. The method comprises the following steps: establishing a websocket transit server, establishing a transit server basic framework, installing a transmission module through an npm packet manager, establishing communication by using the transmission module, and binding with a server and a port. The client is connected with the server; the server side is connected with the communication server, the transit server establishes connection with the communication server through a node service, multi-point connection of a user to the communication server is changed into one point, and a websocket forwards a message to the client side and receives the message; and when the webpage end establishes connection with the transit server, the mobile end establishes connection with the communication server, and the communication server performs data forwarding, storage and message synchronization in the middle to realize cross-platform data interaction. According to the method, the problem that instant messaging cannot be realized by multi-terminal cross-platform data is solved, invalid and repeated data forwarding is avoided, sub-protocol extension and data compression and encryption are supported, higher information real-time performance is achieved, and cross-platform instant messaging is realized.
Owner:中企云链(北京)金融信息服务有限公司

Method and system for recovering low-speed data through high-speed serdes interface

The invention discloses a method and system for recovering low-speed data through a high-speed SerDes interface, and relates to the technical field of communications. The method comprises the following steps that input low-speed data is converted into sampling parallel data through the high-speed SerDes interface, wherein the bit width of the sampling parallel data is an integral multiple of the sampling rate m; the sampling parallel data is extracted in a batched mode to serve as target data, the data bit number of the target data of each batch is the same as the bit width of the sampling parallel data, and after 1 bit displacement is conducted on the target data, the displaced target data is subjected to pairwise xor to obtain the jump edge position of the sampling parallel data; the sampling point position of the sampling parallel data is determined according to the jump edge position, the data corresponding to the sampling point position is effective data of the low-speed data, and the effective data is extracted from the sampling point position of the sampling parallel data. Accordingly, the low-speed data is recovered by means of the existing high-speed SerDes interface, the chip design risk and cost are lowered, and the development cycle is shortened.
Owner:武汉二进制半导体有限公司

Parameter extraction method of elliptical frustum-shaped TSV based on temperature effect

The invention discloses a parameter extraction method of an elliptical frustum-shaped TSV (through silicon via) based on a temperature effect. The parameter extraction method comprises the following steps: establishing a physical model of the elliptical frustum-shaped TSV containing bonding bumps; extracting parasitic resistance of the elliptical frustum-shaped TSV containing the bonding bumps; extracting parasitic inductance of the elliptical frustum-shaped TSV containing the bonding bumps; extracting parasitic capacitance of the elliptical frustum-shaped TSV containing the bonding bumps; establishing an equivalent circuit corresponding to the elliptical frustum-shaped TSV parasitic parameters containing the bonding bumps; and performing S parameter simulation on the physical model and the equivalent circuit of the elliptical frustum-shaped TSV containing the bonding bumps. According to the parameter extraction method, the structure of the bonding bump is completely considered, especially the coupling influence of the bonding bump on the resistance and capacitance of the TSV is considered, and all parasitic parameters of the TSV can be extracted more accurately.
Owner:XIDIAN UNIV
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