163results about How to "Realize sending and receiving" patented technology

The invention relates to the communication technology field, more particularly to a radio transceiver that is compatible with a TD-LTE frequency range of 2.3 to 2.4 GHz and is oriented to an IMT-Advanced frequency range of 3.4 to 3.6 GHz. The radio transceiver comprises: an antenna module, which is used for receiving and transmitting a signal; a switch, which is used for completing switching between a transmitting link and a reception link; a frequency synthesizer, which is used for providing a local oscillator signal; the reception link, which is used for dividing a received radio frequency signal into two paths of signals, carrying out mixing respectively on the two paths of signals and the local oscillator signal provided by the frequency synthesizer, carrying out down conversion processing and then providing the processed signals for a base band to carry out digital signal processing; the transmitting link, which is used for carrying out mixing on two paths of base band signals and the local oscillator signal provided by the frequency synthesizer, carrying out up conversion processing, generating two paths of emitted radio frequency signals that are combined into one path of signal and then carrying out power amplification. According to the invention, receiving and sending of wireless signals can be realized; and control on a gain, frequency, a bandwidth, time division multiplex, and transmitting power is contained.

The invention provides a duplex amplifying module, a multi-mode terminal, a radio frequency front end module, a multi-mode radio frequency receiving and sending chip, and a method for sending a signal of the multi-mode terminal. The duplex amplifying module includes a power amplifier and a duplexer, wherein the power amplifier is used for amplifying signals in any one of at least two frequency ranges of input various forms of signals and then outputting the amplified signals to the duplex; the duplex is used for outputting the signals amplified by the power amplifier, and / or for filtering signals in any one of at least two frequency ranges of received various forms of signals and then outputting the filtered signals. The duplex amplifying module and the multi-mode terminal comprising the same provided by the invention simplify radio frequency receiving and sending paths and greatly increase integration of the multi-mode terminal, therefore, the multi-mode terminal takes up a smaller area of a Printed Circuit Board (PCB).

The invention relates to the technical field of electronic product loudspeaker test and provides an electronic product loudspeaker and microphone testing system and a testing method. The testing system comprises an airtight box, a voice frequency signal transmit-receive unit and testing terminal; an electronic product, a measurement microphone and a measurement loudspeaker are arranged inside the airtight box; the voice frequency signal transmit-receive unit is used for sending a first voice frequency electrical signal, controlling the measurement loudspeaker to play a first voice frequency signal and obtains a second voice frequency electrical signal; a to-be-tested microphone obtains a first voice frequency signal; a to-be-tested loudspeaker is used for playing a second voice frequency signal; the test terminal is used for transmitting a test control signal to the voice frequency signal transmit-receive unit and receives the second voice frequency electrical signal which is fed back by the voice frequency signal transmit-receive unit, analyzes and compares the first voice-frequency electrical signal and the second voice-frequency electrical signal, stores and outputs a testing parameter, achieves rapid test of the loudspeaker and the microphone of the electronic product. The testing request is high in accuracy due to the fact that the testing parameter is stored through the testing terminal.

A method to realize instant communication in computer network communication and mobile communication, which contains every mobile user is distributed a internet address (HTTP.URL) called mobile instant communication web site corresponded with mobile telephone number, the mobile user can make instant communication with computer and mobile telephone user by computer or mobile telephone without any special instant communication software only by connecting with internet, said invention can make character, speech sound and video instant communication by browser.

The invention discloses system architecture of a wideband radio frequency front end. The system architecture comprises a wideband transceiver, a transmitting module, a receiving module and a widebandantenna; the transmitting module comprises a wideband driving power amplifier, a wideband power amplifier and a transmitting module matching circuit; the receiving module comprises a wideband low-noise amplifier and a receiving module matching circuit; the transmitting module matching circuit comprises an input matching circuit in multiple bands, an inter-stage matching circuit in multiple bands,and an output matching circuit in multiple bands; and the receiving module matching circuit comprises an input matching circuit in multiple bands and an output matching circuit in multiple bands. By combining the matching circuit in multiple bands and a channel switching function of the radio frequency switch, the wideband power amplifier and the wideband low-noise amplifier are applied to the radio frequency front end module to replace the effects of multiple power amplifiers and multiple low-noise amplifiers, the transceiving in multiple bands is realized, the design difficulty and the design cost of the radio frequency front end circuit are reduced, and the integration level of the circuit is improved.

The invention provides an axial pre-tightening force double-wave measuring method. The method comprises the steps: integrating a pre-tightening force sensor on one end face of a fastener in situ; determining parameters of the fastener; respectively acquiring transverse wave and longitudinal wave temperature compensation calibration curves of the fastener; measuring a sound time difference from theemission of the transverse wave and the longitudinal wave to the reception of the first echo, and taking the sound time difference ratio of the transverse wave and the longitudinal wave as a reference value; acquiring an axial pre-tightening force calibration curve between the sound time difference ratio of the transverse wave and the longitudinal wave and the axial pre-tightening force of the fastener under the same working condition; and applying a pre-tightening force to the fastener, and measuring the acoustic time difference ratio of the transverse wave to the longitudinal wave to obtainan axial pre-tightening force of the fastener corresponding to the sound time difference ratio. According to the invention, ultrasonic double-wave rapid high-precision measurement of the axial pre-tightening force of the fastener is realized, and problems of poor sensor environmental adaptability, incapability of realizing simultaneous receiving and transmitting of double waves, too redundant detection equipment lines, fuzzy implementation details of the method, measurement failure caused by ultrasonic waveform distortion and the like in the prior art are solved.

The invention discloses an ultra-wideband radar system and a method for realizing single-channel multi-frequency-point simultaneous transmission and reception. The ultra-wideband radar system comprises a control processing module, a transceiving antenna, a transmitter branch circuit and a receiver branch circuit, wherein the transmitter branch circuit and the receiver branch circuit are arranged between the control processing module and the transceiving antenna; the transmitter branch circuit receives a control command of the control processing module and generates a required multi-frequency-point digital baseband signal, carries out mixing, digital-to-analog conversion and quadrature up-conversion in sequence, outputs the required multi-frequency-point digital baseband signal and transmits the required multi-frequency-point digital baseband signal by means of the transceiving antenna; and the receiver branch circuit receives a multi-frequency-point analog echo signal from the transceiving antenna, carries out quadrature down-conversion, analog-to-digital conversion and mixing in sequence, and then outputs a multi-frequency-point baseband signal to the control processing module. The method is a method for realizing single-channel multi-frequency-point simultaneous transmission and reception. The ultra-wideband radar system and the method can realize simultaneous transmission and reception of single-channel multi-frequency-point signals, and have the advantages of small frequency interval of stepping frequency, long maximum operating distance, short scanning time and the like.

The invention discloses a system for realizing the continuous check of the sending and receiving of messages, and a device and a method thereof, wherein, the system comprises a main control module and a plurality of blocks of line cards, one block of the line cards is appointed as the protocol processing line card, namely, the device, wherein, other line cards except the protocol processing line card send the received messages to the main control module; the main control module then sends the messages received from other line cards to the protocol processing line card for processing and sends the messages sent by the protocol processing line card to the appointed ports of other line cards to be sent to the opposite ports; after constructing a maintenance association MA entity, the protocol processing line card is initialized and written into the table item of the continuity check message CCM information table to carry out the sending and receiving processing of the CCM messages and the corresponding processing of message errors or connection errors. The invention leads the CCM messages to be centralized on the protocol processing line card for processing so as to save the CPU resources of other line cards, and supports the sending and receiving processing of large capacity CCM messages.

The invention provides a cylindrical transducer which is characterized by comprising stacked piezoelectric circular tubes with same external diameters and different internal diameters, a sound absorbing layer, an end cover, a plastic sealing layer, an output cable and a support. The stacked piezoelectric circular tubes with different internal diameters can be formed by casting integrally or adhering a plurality of piezoelectric circular tubes with different internal diameters together. By reasonably designing the internal diameters of the piezoelectric circular tubes, the resonant frequency of the circular tubes of all piezoelectric vibrators can be made closer and coupled, the combined frequency response can not generate intermittent and too deep valleys, composite multimode vibration can be formed, the operating bandwidth of the cylindrical transducer can be expanded effectively hereby, and the acoustic wave can be received and transmitted horizontally all around at high frequency by broadband.

The invention discloses a multi-functional intelligent wrist-type help-seeking hand ring which comprises a shell (1) and an inner core (2). The shell is provided with a wristband; the inner core is provided with a circuit board, a GPS antenna, a GSM antenna, a pickup, a speaker, a charging interface, a vibration motor, a camera, a display screen, a button, a lithium battery, and an SIM card seat; a microprocessor, an intelligent communication chip, a video chip and a memory are arranged on the circuit board; the inner core is arranged in the inner cavity of the shell. During application, an SIM card is required to be inserted into the multi-functional intelligent wrist-type help-seeking hand ring, so that a network operator can provide services, and the multi-functional intelligent wrist-type help-seeking hand ring can be kept in contact with a GPS; the multi-functional intelligent wrist-type help-seeking hand ring is worn on a wrist through the wristband, so that the multi-functional intelligent wrist-type help-seeking hand ring can move with a user; during use, the button is pressed, and the functions of GPS location, telephoning, transceiving of SMS, WeChat, micro-video and micro-audio, video displaying, recording, picture recording, photographing, and information saving are realized by operating virtual buttons displayed on the display screen. Therefore, the multi-functional intelligent wrist-type help-seeking hand ring being an electronic hand ring has the functions of GPS locating, real-time information exchange, and automatic alarm for seeking help.

The invention provides a method for RRU signaling cascade, wherein a BBU is cascaded with a plurality of RRUs, downlink is that a signaling reaches an RRU from a BBU or reaches the next RRU from the RRU, and uplink is that a signaling reaches the BBU from the RRU or reaches the previous RRU from the RRU. The method is characterized by comprising the following steps: (a) a signaling between the BBU and the RRU is framed according to a specified format; (b) a downlink signaling is extracted and transmitted, in which the RRU extracts the signaling from a data frame according to the specified frame format after receiving a downlink data frame; and the RRU transmits the signaling correlated to the RRU cascade position after processing the signaling, and other signalings are directly transmitted; and (c) an uplink signaling is inserted and transmitted, in which inserting and transmitting of the signaling are performed by adopting a time sharing multiplex method when the uplink signaling is in down link; when the RRU belongs to the frame of the level, the signaling is sent; and when the RRU does not belong to the frame of the level, a signaling sent by the next RRU is transmitted.

A paging transmission method under uplink mobility includes the following steps: enabling a communication site to receive an uplink reference signal of a communication node according to configurationinformation, wherein the configuration information includes uplink reference signal transmission configuration information and receiving configuration information of feedback information, and an association relationship between an uplink reference signal resource and a feedback resource; and sending the feedback information to the communication node, wherein the feedback information includes paging instruction information or paging information. According to the scheme, the receiving and transmission of the paging information under a mechanism based on the uplink mobility can be effectively achieved; and reciprocity state information is fully used, and the signaling overhead and delay of subsequent paging transmission can be saved.

The invention relates to a wireless positioning cable system. The system comprises a plurality of wireless positioning cables, a plurality of connectors and an upper computer, wherein the wireless positioning cables are connected through the connectors, cover a target area, and are used for positioning the target area; and the upper computer is in communication with the wireless positioning cables, receives a wireless positioning measurement result, and calculates position coordinates of a terminal, or receives, analyzes and displays a wireless positioning result. A wireless module with a relatively small shape is integrated in a wireless positioning cable, and can conveniently deployed, expanded and disassembled in the target positioning area during high-precision positioning; and a transmission mode of positioning coordinates by multiple positioning result labels is provided, and if a communication network is deployed in the target positioning area, transceiving of relevant data of the positioning process can be realized in a simpler and more effective manner.

The invention provides a multi-wavelength passive optical network system and a protecting method thereof as well as multi-wavelength far-end nodes. The system comprises an optical line terminal, a plurality of multi-wavelength far-end nodes and a plurality of optical network unit groups, wherein the optical line terminal and the multi-wavelength far-end nodes form an annular network by an optical fiber, and an optical network unit group is connected to each multi-wavelength far-end node; different optical network unit groups adopt wavelength division multiplexing; optical network units in one optical network unit group multiplex a wavelength in a time division way, and the uplink wavelength and the downlink wavelength of the optical network unit group are equal. The optical line terminal comprises a first optical transmitting module, a second optical transmitting module, a first optical receiving module and a second optical receiving module, wherein the first optical transmitting module and the second optical transmitting module can transmit downlink signals along different directions, and the first optical receiving module and the second optical receiving module can receive uplink signals transmitted along different directions; and accordingly, when a network link generates failure, the annular network can still realize the receiving and the transmission of the signals in a place without failure after broken into two tree-shaped networks, thereby providing failure recovery at a telecommunication grade with lower cost.

The invention discloses a multi-mode passive tag, which comprises a substrate, wherein a printed dipole antenna, a printed microstrip combiner and a plurality of communication processing chips are arranged on the front side of the substrate; the printed dipole antenna comprises a first antenna and a second antenna, which have the same structure and distributed symmetrically; the first antenna hasa first feed terminal and the second antenna has a second feed terminal; a balance and unbalance converter is arranged between the first feed terminal and the second feed terminal; the printed microstrip combiner comprises a public terminal and a plurality of separate terminals; the public terminal of the printed microstrip combiner is connected with the first feed terminal; and each separate terminal of the printed microstrip combiner is connected with a communication processing chip. The multi-mode passive tag has the advantages that: 1, the production and processing process is simple, and the cost is low; 2, the antenna can transmit and receive more than two radio frequency signals; and 3, the application of the microstrip combiner allows different radio frequency signals to perform operation on one radio frequency tag at the same time, namely multi-mode operation.

The invention discloses a multimedia message processing method and a multimedia message center. The multimedia message processing method comprises the following steps: the multimedia message center receives a multimedia message from a sender and performs the authentication through a digital copyright server after determining that the multimedia message includes a digital copyright; the multimedia message center receives an acquisition request message for acquiring the multimedia message and judges whether a receiver supports the protection mode of the digital copyright or not, wherein the acquisition request message is from the receiver; and the multimedia message center sends the multimedia message under the condition that the receiver supports the protection mode of the digital copyright. The invention enables the multimedia message center to have the capacity of processing a DRM message and judging whether a terminal phone supports DRM or not, and realizes that the DRM copyright message is sent and received by a multimedia message system.

This invention relates to one GSM or PHS double mode cell phone by use of single antenna, which is located with only one antenna through one antenna set to connect to one GSM and PHS module sets connected with one central process unit to receive the control signal from the central process unit and to switch from other set module to make the cell phone select to enter GSM or PHS mode to realize the testing and receiving within range of 900M or 1900MHx frequency. Besides, the antenna set can pre-set order according to the different frequency section signal intensity to select work mode and to switch to 900M or 1900MHz to get the suitable work mode.

The invention discloses an embedded vector font color changing method for realizing the receiving and transmitting and displaying of multimedia messages in an embedded system with low processing capacity and low storage capacity. A message receiving party and a message transmitting party use same message coding mode. The embedded vector font color changing method comprises the following steps: adding color information of a message into coding information of the message when a user writes the message, then sending the coding information to a called user, obtaining corresponding color information and character information by analyzing after the called user receives the coding information, then executing the following steps to process all characters in the message, processing the characters by using a font engine to obtain 256-grayscale bitmap information and color information of the characters; converting the data of each point of the bitmap information according to the 256-grayscale bitmap information and the color information; and displaying the characters on a screen by using a vector font decoder according to the obtained color information.

The invention provides an antenna switching method, an antenna assembly, electronic device and a storage medium. The antenna switching method is applied to the electronic equipment which comprises first, second and third antennas, and the first antenna is used to transmit and receive wireless fidelity signals. The antenna switching method comprises that a work state of the first antenna is determined; if the first antenna is in a working state, at least one of the second and third antennas is determined to be a target antenna; and the target antenna is switched to transmit and receive the wireless fidelity signals. Thus, the wireless fidelity signal transmission performance can be improved.

The present invention provides a picture data loading method, a picture data loading device and a mobile terminal. The method includes the following steps that: picture data carrying with audio identification information are received; person face feature data in the picture data are identified, and first audio identification information corresponding to the person face feature data in the audio identification information is obtained; a first audio file corresponding to the first audio identification information is obtained; and the picture data are loaded and displayed, and the first audio file is played in a display process. With the picture data loading method and the picture data loading device provided by the technical schemes of the invention adopted, not only can the received picture data carrying with audio identification information be displayed, but also the audio file synthesized in the picture data can be played, and an audio picture can be transmitted and received between different mobile terminals, and the fun of users in sharing the audio picture in a communication process can be increased.

The invention belongs to the related technical field of MQTT transmission protocols, and discloses a method for connecting an industrial acquisition module with an MQTT cloud server. The method comprises the following steps: (1) performing connection compiling on a logic program to generate a static library; (2) compiling a user program and the static library link to generate an HEX file, and downloading the HEX file into an acquisition module by using a serial port; (3) initializing an authentication parameter of the MQTT server by the acquisition module, and sending an access authenticationrequest through the wireless communication module to connect the MQTT server; (4) publishing the data information acquired in real time by the acquisition module to a predetermined theme of the MQTT server, and forwarding the published information to a client subscribing the predetermined theme by the MQTT server; meanwhile, subscribing to the theme by the acquisition module and sending the information under the corresponding theme to the acquisition module by the MQTT server. According to the invention, the applicability and the flexibility are improved.

The invention discloses a multi-mode slot antenna and a mobile terminal. The multi-mode slot antenna comprises: a metal plate, wherein a slot is formed in the metal plate and used for dividing the metal plate into a ground end and an antenna end; at least two partition capacitors, wherein the two ends of the partition capacitors are connected with the two sides of the slot respectively, the slot is divided into a plurality of feed regions, and one of the partition capacitors is a shared partition capacitor; a combining feed matching circuit, wherein the combining feed matching circuit multiplexes the shared partition capacitor, and the combining feed matching circuit also comprises a capacitor C, an inductor L and an inductor L1; at least two far field feed structures, wherein one far field feed structure is a first far field feed structure, and the first far field feed structure is connected with the other end of the capacitor C; and a near field feed structure, wherein the near field feed structure is connected with the other end of the inductor L. According to the multi-mode slot antenna, the slot is shared through a near field communication structure and a far field communication structure; and the multi-mode slot antenna is simple in structure and low in cost.

The invention provides an optical energy and optical signal transceiving and processing system based on a single optical fiber integrated optical cable. The invention is characterized in the: the invention is composed of a user terminal control system, an optical coupler, a multifunctional integrated optical cable, a wavelength division multiplexing module, a photoelectric conversion module, a sensor port, a signal receiving and transmitting duplex module, a voltage regulating circuit and a function module. The invention can simultaneously realize the transmission of electric energy, communication and sensing signals in the form of optical signals in a single optical cable. The optical signals in the system are optical signals with different wavelengths, so that the interference between each other is minimal. High voltage instrument is not needed in the control and output of the system to realize the output and transmission of electric power, which reduces the complexity of the systemdesign and improves the portability of the overall system. The invention can simultaneously realize the transmission of long-distance energy, the communication and the sending and receiving of the sensing signal, and can be used for the long-distance monitoring, the exploration and the completion of the special tasks in the complex environment such as the seabed and the underground.

The invention relates to an Internet-of-Things gateway communication channel expansion system. The system comprises a controller, an RS232 interface circuit, an Internet-of-things gateway, an RS232 extension circuit and a plurality of information sensing devices; the Internet-of-things gateway is connected with one end of the controller through the RS232 interface circuit; the other end of the controller is connected with the information sensing devices through the RS232 extension circuit; and the controller is a single-chip microcomputer Atmega128. With the system of the invention adopted, conversion between interfaces can be realized; the compatibility of the interfaces can be improved; the structure of the gateway device can be simplified; device cost can be reduced; the efficiency of data transmission of the Internet of Things can be improved, so that the application of Internet of Things technologies can be promoted; and the carrying capacity and data transmission efficiency of bottom-layer hardware of the Internet of Things can be improved, so that the Internet-of-Things gateway communication channel expansion system has a certain practical value in system using Internet of Things technologies.

The invention discloses a packaging receiving-sending all-in-one machine and a sampling system and relates to the technical field of sample detection. The packaging receiving-sending all-in-one machine comprises a first storage mechanism, a slow falling mechanism, a conveying mechanism, a packaging mechanism and a receiving-sending mechanism. The first storage mechanism is used for storing empty sample bottles. The slow falling mechanism is arranged between the first storage mechanism and the conveying mechanism, and when the first storage mechanism releases the sample bottles, the slow falling mechanism is used for enabling the sample bottles to slowly fall on the conveying mechanism. The conveying mechanism is used for transferring empty samples to a code writing sample preparation area.The conveying mechanism is used for sequentially transferring the sample bottles filled with the samples to the packaging mechanism and the receiving-sending mechanism. The packaging mechanism is used for packaging the sample bottles filled with the samples. The receiving-sending mechanism is used for sending the packaged sample bottles outwards and receiving the sample bottles to be recycled. Asampling system comprises the packaging receiving-sending all-in-one machine . Through the packaging receiving-sending all-in-one machine provided by the invention, the working efficiency can be improved, and the sampling counterfeiting probability is lowered.

The invention relates to a composite interlocking device for power distribution equipment. The composite interlocking device consists of a singlechip, a voltage stabilizing circuit module and a terminal strip, and is characterized in that an optical isolation interlocking signal acquisition circuit consisting of a resistor, an optical isolator and a voltage stabilizing tube is arranged between the singlechip and an external interlocking node introduction terminal of the terminal strip; a relay driving circuit consisting of an optical isolator, a resistor, a triode and a relay coil is further connected to the singlechip. A passive interlocking node can be accessed through a cable, and an interlocking signal can be received through 2.4G wireless communication. Meanwhile, an abnormity alarm signal is transmitted to a power distribution automation terminal through 2.4G wireless communication, thereby realizing remote monitoring of remote loop interlocking information.