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99results about How to "Does not affect normal communication" patented technology
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Method for designing reflecting surface assisted device-to-device communication system
ActiveCN111314893ADoes not affect normal communicationLow costPassive radio relay systemsNetwork planningCommunications systemInterference (communication)
The invention belongs to the technical field of wireless communication, and particularly relates to a design method of a reflecting surface assisted device-to-device communication system. The scheme of the invention is as follows: a base station receives useful signals from cellular users and interference signals from D2D sending equipment multiplexing the same frequency band; and the D2D receiving equipment receives the useful signals from the corresponding D2D sending equipment and the interference signals from the cellular users sharing the same frequency band. According to the invention, the pairing scheme of the D2D pair and the cellular user is determined through a heuristic method, and the sending power of the D2D link and the cellular link and the passive beamforming of the reflecting surface are optimized in a combined manner, so that the maximization of the system sum rate is realized under the condition of meeting the communication rate requirements of the D2D user and the cellular user. Through simulation verification, under the conditions that normal communication of a traditional cellular system is not affected and energy, frequency spectrum and cost expenditure are not additionally increased, the system sum rate is greatly increased, and the method has very high application value and development potential.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Vehicle-mounted device of electric automobile
ActiveCN102915012AImprove performanceReduce volumeTotal factory controlProgramme total factory controlHuman–machine interfaceArea network
The invention provides a vehicle-mounted device of an electric automobile. The device comprises a master control module, a CAN (controller area network) bus communication module, a 3G (third-generation) wireless communication module, a GPS (global positioning system) data receiving and processing module, and a user interaction module; the CAN bus communication module is in two-way connection with the master control module through an SPI (serial peripheral interface) bus, and the 3G wireless communication module, the GPS data receiving and processing module and the user interaction module are all in two-way connection with the master control module through a serial port. The vehicle-mounted device of the electric automobile has the functions of real-time monitoring of operation information of a vehicle and a battery, vehicle locating and navigating, and providing multimedia service, is suitable for intelligentized monitoring and management of the electric automobile industry, interaction of the electric automobile and a power grid, and remote diagnosis and emergency rescue of the vehicle, is fast in data collecting and processing, high in software platform development and operation efficiency, and friendly to a human-computer interface, and safe and reliable operation of the electric automobile can be guaranteed.
Owner:CHINA ELECTRIC POWER RES INST +2
Device and method for monitoring telephone number of user
InactiveCN103260172AQuick release in timeImperceptibleWireless communicationMobile Telephone NumberSecurity policy
The invention relates to a device and method for monitoring a telephone number of a user. A software radio platform and a global system of mobile communication (GSM) protocol stack program are utilized by the device and method to build a regulation base station system which has a base transceiver station (BTS) function of a GSM network, and the regulation base station system is used for conducting wireless communication with a telephone of the user and extracting identification information, like an international mobile subscriber identification number (IMSI), of the telephone of the user. According to the IMSI of the telephone of the user, a subscriber identity module (SIM) card simulation program is used for achieving SIM card simulation on the telephone of the user, the SIM card simulation program completes operations, such as network authentication and position updating, and then is attached to a normal network through information interaction between identity simulation equipment and a simulation user telephone SIM card, finally the telephone number of the user is extracted by dialing of a called terminal, and monitoring of the telephone number of the user is achieved according to a preset security policy. The device and method is mainly composed of six components including a software radio module, a called terminal module, an identity simulation module, an SIM card simulation module, a main control module and a GSM protocol stack analysis module.
Owner:东南大学常州研究院
Calibration system and method for amplitude-phase error of receiving channel of spaceborne DBF network
ActiveCN102769601AEliminate distractionsGuaranteed stabilityBaseband system detailsMultiple carrier systemsCoding blockDigital up converter
The invention discloses a calibration system and method for the amplitude-phase error of a receiving channel of a spaceborne DBF (Digital Beam Forming) network. The system comprises a calibration signal generating module, a calibration signal transmitting module, a receiving channel and calibration interface module, and a calibration algorithm execution module, wherein the calibration algorithm execution module comprises an amplitude-phase error estimator and a calibration factor generator; the calibration signal generating module comprises an orthogonal pseudo random code block generator and a BPSK (Binary Phase Shift Keying) modulator; the calibration signal transmitting module comprises a digital up converter, a DA inverter, an analog up converter and a calibration feed source; the calibration signal generating module is connected with the calibration signal transmitting module; and the calibration algorithm execution module is connected with the receiving channel and calibration interface module. The system and the method provided by the invention have the advantages of strong real-time performance, high precision and high stability, and save satellite resources.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Managed gigabit industrial Ethernet switch supporting technology for quickly recovering redundancy within 5 ms and meeting requirements of rail traffic control system
InactiveCN102223222AShorten the timeDoes not affect normal communicationError preventionData switching networksIndustrial EthernetControl system
The invention discloses a managed gigabit industrial Ethernet switch supporting a technology for quickly recovering redundancy within 5 ms and meeting requirements of a rail traffic control system. By adoption of a new redundancy algorithm, master and slave switches are selected, and a normal link and a backup link are determined; the communication state of a port is determined by using an interrupted and polling monitoring method; switching between the backup link and the normal link is realized by changing the state of the port; and the recovery time of a gigabit redundancy technology is shortened to be less than 5 ms, and the recovery time of a megabit redundancy technology is shortened to be less than 15 ms.
Owner:SUZHOU HENGQI AUTOMATION ENG
Method and device for detecting adjacent channel interference
ActiveCN103269498ADoes not affect normal communicationShorten the timeWireless communicationAdjacent-channel interferenceFrequency spectrum
The invention provides a method and device for detecting adjacent channel interference. The method comprises the steps that an AP broadcasts a first silent message on a channel occupied by the AP according to a set period; a spectral analysis is conducted on the channel in a first set duration to obtain spectral analysis data of the channel; the spectral analysis data meeting preset conditions are determined according to RSSI values of all sampling points in the obtained spectral analysis data, and whether the quantity of the determined spectral analysis data is greater than or equal to a set quantity is judged; on the condition that the quantity of the determined spectral analysis data is judged to be greater than or equal to the set quantity, the adjacent channel interference existing in the AP is determined. According to the method and device for detecting the adjacent channel interference, the AP sends the silent message, so that an STA and another AP receiving the silent message are in a silent state for a period of time, then whether the adjacent channel interference exists in the AP can be detected as long as the spectral analysis is conducted on the channel occupied by the AP, and the spectral analysis does not need to be conducted on other channels. Therefore, a lot of time is saved, and detection efficiency is improved.
Owner:RUIJIE NETWORKS CO LTD
Equipment and method for monitoring short messages of mobile terminal
InactiveCN103369482ANo operational burdenGood effectMessaging/mailboxes/announcementsSecurity arrangementComputer terminalGlobal system
The invention provides equipment and a method for monitoring short messages of a mobile terminal. The equipment comprises a monitoring base-station hardware module, a monitoring base-station software module, a short message monitoring control module, a user identity simulating software module, and a user identity simulating hardware module. The mobile terminal is connected to a monitoring base station in a wireless manner and is attached to the monitoring base station, the monitoring base-station software module analyzes user identity information and sends the user identity information to the user identity simulating software module, the user identity simulating hardware module is started and connected to a real GSM (Global System for Mobile Communications) network, and the identity of the user identity simulating hardware module in the real network is an object user. The object user sends short messages, the monitoring base station receives the short messages and sends the short messages to the short message monitoring control module, contents of the short messages are analyzed and filtered, vicious or suspected short messages are stored, and reliable short messages are forwarded. The user identity simulating modules receive the short messages sent to the object user in the real network, the short messages are monitored via analysis, filtering and the like, and then the monitoring base station forwards the short messages to the object user, thereby realizing safe monitoring for the short messages of the mobile object user.
Owner:东南大学常州研究院
Online optical network unit (ONU) optical power acquisition device and method
InactiveCN101789824ADoes not affect normal communicationTo achieve the purpose of online detectionStar-type electromagnetic networksOptical powerOptical Module
The invention discloses an online optical network unit (ONU) optical power acquisition device and an online ONU optical power acquisition method; the device includes that: a control signal wire is arranged between an OLT MAC control module and an OLT side optical module; the method comprises that in the operation process of an EPON system, the OLT MAC control module controls the OLT side optical module to measure the optical power of the ONU in the time slot distributed to each ONU by the OLT through the control signal wire. The online ONU optical power acquisition device and the method can measure the accurate optical power of any ONU in the EPON system in an online way, and facilitate the diagnosis and maintenance of optical network.
Owner:ZTE CORP
Encryption and decryption device and method, and communication terminal equipment
InactiveCN106888310AAvoid gettingImprove securityEavesdropping prevention circuitsSecurity arrangementTerminal equipmentComputer terminal
The invention provides an encryption and decryption device applied to a communication terminal. The encryption and decryption device comprises an application processor comprising a core module, and an encryption and decryption module, wherein the core module is suitable for transmitting communication data received by the communication terminal, the communication data comprises conversation data, the encryption and decryption module is connected with the core module and is suitable for carrying out encryption or decryption for the communication data received from the core module. The invention further provides an encryption and decryption method applied to the encryption and decryption device. The invention further provides communication terminal equipment. The communication terminal equipment comprises any encryption and decryption device and a switch device used for opening or closing the encryption and decryption device. Through the encryption and decryption device and the encryption and decryption method, unauthorized persons are effectively prevented from acquiring communication content of two communication parties, and thereby safety of the conversation content and the short message content can be obviously improved.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD
Wireless communication terminal positioning method
InactiveCN105208653AHigh positioning accuracyDoes not affect normal communicationPosition fixationWireless communicationComputer terminalVIT signals
The invention discloses a wireless communication terminal positioning method. A movable positioning device is used for positioning a target device; the movable positioning device measures the sum of time for propagating a signal from a base station to the target device and time for propagating the signal from the target device to the positioning device; an elliptic line with the position, where the base station and the positioning device are located, as the focus is determined; when a downlink signal and an upper uplink signal which are detected by the target device and the positioning device respectively are directly propagated, it is considered that the target device is on the elliptic line; when the downlink signal and the upper uplink signal which are detected by the target device and the positioning device respectively are not directly propagated, it is considered that the target device is located in the elliptic line; by means of multiple times of measurement, the intersection point of previous ellipses is used as the preferential positioning position for searching for the target device, whether position determining conditions are met or not is measured, and finally the position of the target device is determined. The wireless communication terminal positioning method has the advantage of being high in positioning precision and positioning efficiency.
Owner:GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
Channel frequency generation method and device and channel evaluation circuit
ActiveCN107995133AImprove accuracy and real-timeImprove performance and quality of sent signalsChannel estimationRF moduleHardware circuits
The invention discloses a channel frequency generation method and device and a channel evaluation circuit. The method includes the following steps: generating a channel frequency for next transmissionat a frequency hopping sequence generation module according to an input parameter and a basic frequency hopping sequence; determining whether the channel frequency is available according to channel quality evaluation through an AFH channel mapping module, and when available, outputting the first channel frequency as a channel sequence of an RF module; and when not available, generating a channelfrequency for the next transmission at the AFH channel mapping module according to the input parameter and the basic frequency hopping sequence, and when the generated channel frequency indicates an available channel, outputting the channel frequency as the channel sequence of the RF module. By adopting the scheme of the invention, the process of transmitting data by using an interference channelcan be avoided, the performance of a transmitter and the quality of a transmitted signal can be improved, and the interference of the channel with the transmitted signal can be reduced; and further, ascheme implemented by a hardware circuit is also provided, and the quality of communication transmission can be greatly improved.
Owner:CHINA ACAD OF TELECOMM TECH
Shopping system and shopping method
InactiveCN1848164AConvenient automatic paymentConvenient shoppingPayment architectureCommercePaymentTelecommunications
The present invention relates to a shopping system. It includes short message receiving and sending centre for receiving and transferring short message sent by purchaser via short message terminal; switching centre for receiving short message transferred by said short message receiving and sending centre, extracting and sending shopping information provided by said short message and sending correspondent payment request information; shopping platform for proving correspondent goods according to the shopping information sent by said switching centre; and bank payment platform for making settlement according to payment request information sent by said switching centre. According to said system said invention also provides a shopping method by utilizing short message.
Owner:CHINA UNIONPAY
Coding and decoding method for communication security of wireless communication physical layer
ActiveCN110233701APrevent illegal accessIncrease the difficultyError preventionError correction/detection using multiple parity bitsComputer hardwareCommunications security
The invention provides a coding and decoding method for communication security of a wireless communication physical layer, and the coding and decoding method can be used for remarkably reducing the probability that information is stolen. The invention is realized through the following technical scheme: the sending end encoding the message bit sequence by using an LDPC encoder, performing a specific OR operation on a part of bits of adjacent code words of the sending end to obtain a new bit sequence, and the BPSK modulator modulating the newly generated bits and check bits which do not participate in the operation into BPSK symbols and sends the BPSK symbols to the receiving end; the receiving end BPSK demodulator demodulating the logarithm likelihood ratio LLR value of the code word checkbit according to the code word message bit prior information fed back by the receiving end LDPC decoder and the channel receiving symbol; and the LDPC decoder at the receiving end calculating a message bit LLR value, decoding the message bit of the current code word, and feeding the code word message bit LLR value back to the BPSK demodulator at the receiving end, so that iteration is carried outuntil the message bits of all code words are decoded.
Owner:10TH RES INST OF CETC
Targeted interference equipment and interference method of wireless local area network
InactiveCN103095406AReduce consumptionDoes not affect normal communicationError preventionAudio power amplifierComputer module
Owner:SHANGHAI INTERNET OF THINGS +1
A mobile terminal and a method for limiting inter-process communication thereof, a storage medium
ActiveCN109032812ALess busyDoes not affect normal communicationInterprogram communicationClient-sideInter-process communication
The invention discloses a mobile terminal and a method for limiting inter-process communication thereof, a storage medium. The method for limiting the inter-process communication comprises: acquiringa first number of available binder threads of a server, wherein the binder thread is provided by the server and is used to respond to the binder request sent by the client to realize the communicationbetween the client and the server; determining whether the first number is less than a first set threshold value; If so, restricting the binder communication between the client and the server; dividing clients into first-class client and second-class client according to their importance, wherein the importance of first-class client is less than that of second-class client. By using the method, the busy degree of the server can be reduced, and the fluency of the system can be ensured.
Owner:OPPO CHONGQING INTELLIGENT TECH CO LTD
Method and system for obtaining location of user equipment, management platform and virtual base station
InactiveCN106792498ADoes not affect normal communicationLocation information based serviceVirtual base stationUser equipment
The invention, which relates to the technical field of wireless communication, provides a method and system for obtaining location of user equipment, a management platform and a virtual base station. The method comprises: the management station sends a control instruction for obtaining the location of user equipment to a virtual base station arranged at each zone, so that the virtual base station transmits a signal to the zone where the virtual base station is located according to a preset transmission power; if the user equipment is connected to the virtual base station, the management platform receives an international mobile subscriber identity (IMSI) of the user equipment and an ID of the virtual base station, wherein the IMSI and the ID are reported by the virtual base station; and the management platform determines the zone corresponding to the ID is the location of the user equipment corresponding to the IMSI according to a preset correspondence relationship between the ID and the zone where the virtual base station is located. Therefore, the location of a mobile phone can be obtained under the circumstance that normal communication of the mobile phone is not affected and cooperation by the user or operator is not required. The method is simple and is easy to implement.
Owner:INST OF INFORMATION ENG CAS
Nano anti-ultraviolet heat insulation coated glass and production method thereof
The invention relates to a nano anti-ultraviolet heat insulation coated glass which comprises a glass plate and a layer of tin antimony oxide film on the surface of the glass plate, wherein the thickness of the tin antimony oxide film is in the range of 7-10Mu m, a plurality of tin antimony oxide particles are distributed in the tin antimony oxide film, and the diameter of any one of the tin antimony oxide particles is in the range of 1-100 nm. The production method for the nano anti-ultraviolet heat insulation coated glass comprises the following steps: cleaning the glass plate by a glass washing machine, drying the clean glass plate, filtering and heating a water body containing tin antimony oxide particles by a liquid cycle filtering and heating device, making the water body form a liquid curtain by a surface spraying device and coating the glass plate with the liquid curtain, carrying out infrared radiation on the glass plate by a temperature control infrared radiation box, and cooling the glass plate. The nano anti-ultraviolet heat insulation coated glass is easy to produce and can achieve the heat insulation effect, does not influence indoor lighting and does not pollute environment.
Owner:SHANGHAI CENXING IND
Software upgrading method, device and system, vehicle and storage medium
ActiveCN112230948AIncrease the maximum communication rateImprove upgrade speedSoftware deploymentIn vehicleElectric control
The invention relates to a software upgrading method, device and system, a vehicle and a storage medium. The method is applied to vehicle-mounted electric control equipment connected to a whole vehicle CAN bus, the resistance values of a first terminal resistor and a second terminal resistor connected to the whole vehicle CAN bus are both smaller than 120 ohms. The method comprises steps of a first message sent by external upgrading equipment being received at a first communication rate; sending a response message to the upgrading equipment under the condition of determining that the upgradingequipment is the target vehicle-mounted electronic control equipment according to the identification information; if the response message is sent, receiving a second message sent by the upgrading equipment at the first communication rate; in response to the second message, switching the communication rate to a second communication rate; and receiving the upgrading program sent by the upgrading equipment at the second communication rate, and installing the upgrading program. The method is advantaged in that the communication rate can be increased from the first communication rate to the secondcommunication rate on the basis of not replacing the CAN bus of the whole vehicle, transmission of an upgrading program is accelerated, the software upgrading speed is increased, and the software upgrading time is shortened.
Owner:BYD CO LTD
OFDM-based data transmission device
InactiveCN104468452AImprove securityImprove reliabilityPower distribution line transmissionMulti-frequency code systemsCarrier signalSoft handover
The invention discloses an OFDM-based data transmission device. A high-speed DSP and a corresponding software program are adopted for detecting and judging the operation situation of two mainframes and two channels, corresponding non-contact soft handover is carried out when a certain mainframe or channel breaks down, normal communication is not affected when any mainframe or channel breaks down, and meanwhile as a hardware switching circuit is omitted, safety and reliability of data transmission are greatly improved. Aiming at solving the problems that a power line carrier channel is large in noise and severe in interference, improving the impulse interference and narrow-band interference resistance capacity of data signal transmission to the maximum extent and effectively improving the utilization rate of a frequency band at the same time, the OFDM and the method realized by the DSP software are adopted, and the goal that signal transmission rate in bandwidth of 4 kHz on a power line reaches 9600 b / s is achieved.
Owner:XUCHANG UNIV
VHF transceiver switcher
InactiveCN111953372AImprove real-time performanceDoes not affect normal communicationTransmissionComputer hardwareTransceiver
The invention discloses a VHF transceiver switcher. The VHF transceiver switcher comprises an interface module, a switching module, a control module and a display module. The interface module is provided with eight groups of site access interfaces, and each group of site access interfaces comprises six groups of transceiver audio control lines and at least one group of standby transceiver audio control lines. When the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control circuit corresponding to the first transceiveraccording to user operation, and then controls the switching module to disconnect the input end of the first transceiver audio control circuit. The output end of the first transceiver audio control circuit is connected with the input end of the standby transceiver audio control circuit; and the display module is used for displaying the transceiver operation condition of each group of stations. According to the technical scheme, when the transceiver breaks down, the standby transceiver can be switched in real time, and normal communication is not affected.
Owner:交通运输部南海航海保障中心广州通信中心
A mobile terminal, a method for limiting inter-process communication thereof, a storage medium
ActiveCN108984321ALess busyDoes not affect normal communicationInterprogram communicationComputer terminalInter-process communication
The invention discloses a mobile terminal, a method for limiting inter-process communication thereof, and a storage medium. The method for limiting the inter-process communication comprises: acquiringa first number of available binder threads of a server, wherein the binder thread is provided by the server and is used to respond to the binder request sent by the client to realize the communication between the client and the server; determining whether the first number is less than a first set threshold value; if so, restricting binder communication between the background client and the server. Through the method, the busy degree of the server can be reduced, and the fluency of the system can be ensured.
Owner:OPPO CHONGQING INTELLIGENT TECH CO LTD
Active output driving circuit of input and output module and implementation method of active output driving circuit
ActiveCN106924925AEnsure normal communicationSimple designEmergency protective circuit arrangementsElectrical testingComputer moduleDriving circuit
The invention discloses an active output driving circuit of an input and output module. The active output driving circuit comprises a supply circuit, an output starting protection circuit and a line detection circuit. The supply circuit comprises a diode V3, a triode V21 and a capacitor C8. The output starting protection circuit comprises a triode V16, a voltage stabilizing diode D4 and a triode V18. The line detection circuit comprises a resistor R16, a resistor R20, a capacitor C9 and a diode V19. A bus directly supplies power to the active output driving circuit for operation, no relay needs to be adopted, in addition, peripheral equipment can be subjected to effective voltage reduction protection when breaking down, and normal communication of the bus is guaranteed. Therefore, the active output driving circuit is suitable for application and popularization.
Owner:SICHUAN SAIKE SECURITY TECH CO LTD
Power measurement and radio frequency receiving gain control method applied to channel simulator
ActiveCN109951244ASolve the problem that the input signal power cannot be automatically recognizedSolve the problem of accurately measuring the power of the input signalReceivers monitoringHigh level techniquesChannel powerEngineering
The invention discloses a power measurement and radio frequency receiving gain control device applied to a channel simulator. The power measurement and radio frequency receiving gain control device comprises an input end, a coupler, a main signal branch, a branch signal branch and an output end. According to the invention, the nonlinear problem introduced by the channel simulator receiving channelsimulation device is solved, receiver vector performance is improved, and the algorithm problem of realizing power control in a digital domain is solved. Data are compared and analyzed in a digital domain, power distribution of a receiving channel is achieved, the problem that a channel simulator cannot automatically identify power of an input signal is solved. The problem that the channel simulator accurately measures the power of the input signal is solved, switching time delay is small, normal communication is not affected, a power measurement algorithm is simple, and the calibration process is simple and rapid.
Owner:SOUTHEAST UNIV +1
Portable internet terminal monitor and monitoring method thereof
ActiveCN103259695ADoes not affect normal communicationLow costData switching networksDisplay deviceThe Internet
The invention discloses a portable internet terminal monitor which is characterized by comprising a client monitor and a background server. The client monitor is composed of a first CPU carrying a Linux core, a flash storage, an Ethernet interface and a wireless local area network card with the AP function. The client monitor can enable an internet surfing terminal to be connected into a network to communicate, a subprocess can be started by a main program of a system to operate to catch network data packets uploaded or downloaded by the internet surfing terminal, the data packets caught by the subprocess can be sent to the main program to be analyzed, and data packets needing to be stored are sent to the background server after analysis. The background server is in communicated connection with the client monitor, comprises a second CPU, an internal storage and a displayer, is used for receiving data sent by the monitor and can recover and display the received data. The portable internet terminal monitor is simple in structure, low in cost, convenient to carry, strong in specificity and low in energy consumption, cannot affect internet surfing speed, saves energy and protects the environment.
Owner:广东恒电信息科技股份有限公司
Workpiece manufacturing method, glass workpiece and electronic device
InactiveCN103951273ADoes not affect normal communicationHighlight textureCasings/cabinets/drawers detailsGlass reforming apparatusElectronMaterials science
The invention discloses a workpiece manufacturing method, a glass workpiece and an electronic device. The method comprises the steps of determining a predetermined surface of material to be manufactured, wherein the material to be manufactured is a material with a first surface and a second surface, the first surface and the second surface are opposite and the predetermined surface is at least one surface of the first surface and the second surface; performing wire-drawing treatment on the predetermined surface to enable the predetermined surface to form a first representation characteristic; performing coating treatment on the predetermined surface to enable the predetermined surface with the first representation characteristic to form the surface with a second representation characteristic so as to obtain a first workpiece manufactured by using the material to be manufactured, wherein the surface with the second representation characteristic is shown on one surface of the first workpiece. By utilizing the technical scheme disclosed by the embodiment of the invention, the sense of quality of the electronic device can be highlighted and user experience is upgraded; normal communication of the electronic device is not affected.
Owner:LENOVO (BEIJING) CO LTD
Distributed modular fire alarm control system
The invention discloses a distributed modular fire alarm control system, which comprises a first-stage master control unit, a man-machine interaction unit, more than two second-stage master control units and intelligent terminal devices. The first-stage master control unit is used for receiving feedback information of the second-stage master control units and broadcasting the information to all second-stage units for information sharing, and is in data information interaction with the man-machine interaction unit; the man-machine interaction unit is used for realizing functions of printing, display, keyboard and acousto-optic instruction; the second-stage master control units are used for feeding back data information of the intelligent terminal devices to the first-stage master control unit and receiving broadcast information sent by the first-stage master control unit and obtained after feedback of the other second-stage master control units, and meanwhile, is in data interaction with the intelligent terminal devices; and a part of the intelligent terminal devices can be connected in series. The system is novel in design, stable and reliable in operation and convenient to use, greatly improves response speed of a controller, reduces response time and improves production efficiency effectively.
Owner:SICHUAN SAIKE SECURITY TECH CO LTD
Communication method, communication system and storage medium
PendingCN111008166ADoes not affect normal communicationElectric digital data processingComputer hardwareCommunications system
The invention discloses a communication method, a communication system and a storage medium. The communication method comprises the steps that a CPLD receives a communication signal transmitted by a CPU and sequentially transmits the communication signal to slave equipment connected with the CPLD; and the CPLD forwards data between the CPU and the slave equipment according to the communication signal. The CPLD is arranged between the CPU and the slave equipment, the CPLD is connected with the CPU through a group of MDIO buses, and the CPLD is connected with each set of slave equipment througha group of MDIO buses. When the CPU needs to communicate with the slave equipment, the CPLD forwards the signal sent by the CPU to the slave equipment and forwards the data between the CPU and the slave equipment so that the MDIO bus of each set of slave equipment is independent and does not influence each other, and even if one set of slave equipment goes wrong, the normal communication between the CPU and other slave equipment is not influenced.
Owner:GENEW TECH
Scattering channel environment parameter measuring device
InactiveCN103873172AEasy to transportEasy to installTransmission monitoringCommunication interfaceComputer science
The invention discloses a scattering channel environment parameter measuring device which is high in automatic degree, convenient to transport, mount and use, and capable of achieving long-term measuring and storing of scattering channel environment parameters. The scattering channel environment parameter measuring device comprises a scattering channel environment parameter measuring unit, a time unit, a processing and storing unit, a display unit, a communication interface unit and a power source. Through actual application, it is proved that the scattering channel environment parameter measuring device has a good practical effect.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Synchronization method and apparatus in interference unit, and interference unit
ActiveCN106330373ADoes not affect normal communicationTime-division multiplexMulti-frequency code systemsCommunications systemSynchronous control
The invention discloses a synchronization method in an interference unit. The method comprises: a synchronization signal on a reference frequency band is tracked and a current frame head position of the reference frequency band is obtained; according to a time difference of a frame head position of a communication system supported by the interference unit at each frequency band and the frame head position of the reference frequency band as well as a current frame head position of the reference frequency band, a current frame head position of each frequency band is determined; a frame structure of each frequency band is obtained; and on the basis of the current frame head position of each frequency band and a corresponding frame structure, a synchronous control signal is sent, wherein the synchronous control signal is used for controlling a transmitting link in the interference unit to transmit an interference signal. In addition, the invention also discloses a synchronization apparatus in an interference unit and an interference unit.
Owner:CHINA MOBILE COMM GRP CO LTD
Method and device for transmitting reference signal in cell using unlicensed frequency band
ActiveCN110740027AIncrease chances of sendingIncrease success rateNetwork traffic/resource managementTransmission path divisionSignal onEngineering
Owner:HUAWEI TECH CO LTD
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