68results about How to "Realize full-duplex communication" patented technology

The invention relates to an earphone device of a mobile phone, with a function of representing stereo music in a non-communication state and picking up a clear sound signal conducted by vocal cords from air in the external auditory canal of a user in a communication state. The problem of poor pickup effect of the microphone of the earphone device configured in the conventional mobile phone in a normal use state and under a high-noise environment, and the technical defect of intrinsic uncomfortable wearing of the bone conduction microphone, such as external auditory canal pickup, does not exist.

The invention relates to a cross-frequency-band power-line carrier communication system and a communication method thereof. The system includes a power-line carrier machine connected with a power line. The power-line carrier machine includes an analog front end which is used for power amplifying output of sending signals and filtering, conditioning and automatic gain controlling of received signals. The analog front end includes an MCU (micro controller unit) and a carrier channel, which are connected in order. The system is capable of realizing full duplex communication and full-band power-line carrier communication at a frequency-band range of 30kHZ to 20 MHZ. The invention also provides a communication method for the field of electric-power communication. The system expands a usable spectral bandwidth to 30kHz to 20 MHz so that the usable bandwidth is much wider than bandwidths of analog front ends of the prior carrier machines and thus channel bandwidth of the power-line carrier communication is increased and utilization rate of the frequency spectrum and narrowband carrier communication rate and broadband carrier communication distance in the power-line carrier communication are improved.

The present invention relates to a drive control system for controlling a brushless motor by using the combination of two chips. According to the system, the e ARM and CPLD combined control is used, the set values of the torque, speed and position of the system are from a host machine, and the feedback value of a motor state is calculated according to the feedback value of a three-phase Hall sensor in the motor. The ARM is connected to the host machine and receives the set values sent by the host machine and carries out torque control, speed control or position control according to the command of the host machine. The CPLD receives feedback signal of the three-phase Hall sensor, carries out position and speed calculation and sends the calculation values to the ARM. The ARM carries out control operation by combining the calculation values and the set values and sends a command word. The CPLD receives the command word of the ARM and parses the command word as a control command, and the motor is controlled to run through the driving circuit of the motor. According to the system, the speed and position sensors are not needed, the system structure is simplified, and the high precision control of the torque, rotation speed and position can be realized.

The invention relates to a processing method for transmitting and receiving UART (universal asynchronous receiver/transmitter) communication interface data through software simulation in an embedded system. The method for achieving a plurality of UART communication interfaces through software simulation, provided in the invention, comprises a data receiving method and a data transmitting method, wherein baud rate timing is accurately achieved by a timer interruption function of a timer, and both transmitting and receiving are performed under the control of timer interruption. In the invention, for simulating one UART communication interface, only one timer, two I/O (input/output) ports and one software interrupt are required. For simulating a plurality of UART communication interfaces, the timer and the software interrupt are shared. Therefore, once one UART communication interface is added and expanded, only two I/O ports are required to be added. According to the invention, UART communication interfaces can be achieved through software simulation.

The invention discloses a method and system for monitoring equipment in real time through a browser, and a WebSocket server. The method comprises the steps: building first connection between the WebSocket server and station terminal equipment, and receiving the state information transmitted by the station terminal equipment through the first connection; building a second connection with a client browser, and transmitting the state information of the station terminal equipment to the client browser through the second connection, so as to enable the client browser to initialize the contents of atarget monitoring webpage according to the state information; receiving the state change information transmitted by the station terminal equipment when the state of the station terminal equipment changes; and pushing the state change information to a client, so as to enable the client server to update the equipment state information on the target monitoring website according to the state change information. Therefore, the method truly achieves the full-duplex communication between the webpage and the server, achieves the active pushing of the new data to the client server, and reduces the load of the server.

The invention discloses a telecom smart card for realizing a NFC (Near Field Communication) function, which comprises a card base, an SIM (Subscriber Identity Module) card module and an antenna layer, wherein an NFC chip is embedded in the SIM card module, the SIM card module is arranged on the card base, and two reserved contacts and six functional contacts are arranged on the SIM card module; the antenna layer comprises a coil part, a connecting part and a card contact part which are integrated into a whole, and the card contact part is stuck to the card base. The telecom smart card is characterized in that newly added contacts are arranged in an idle area of the card base, and the NFC chip receives and sends radio frequency signals through two of the newly added contacts and controls a power source and signal transmission respectively through a third newly added contact and a fourth newly added contact. The telecom smart card has the function of the NFC and is compatible with an NFC mobile phone by adding the NFC chips and the contacts. In addition, the problems that reserved contacts in an SIM card are occupied and the contact between the antenna contact and the corresponding contact of the SIM card is poor in the prior art are solved.

The invention discloses an interface circuit of a CLF chip in an SWP protocol. The interface circuit comprises an input shaping module, an output load modulation module, a current sampling module and an output shaping module, wherein an input end of the input shaping module is connected with a voltage modulation signal output by the CLF chip; an input end of the output load modulation module is connected with an output end of the input shaping module, and an output end of the output load modulation module is connected with a C6 pin of a UICC chip; an input end of the current sampling module is connected with the C6 pin of the UICC chip; an input end of the output shaping module is connected to an output end of the current sampling module; and an output end of the output shaping module is used for outputting a current modulation signal to the CLF chip. According to the interface circuit of the CLF chip in the SWP protocol, the function of the interface circuit of the CLF chip in the SWP protocol can be realized by the aid of a current sampling technique, a voltage signal S1 can be correctly sent to the UICC chip in the SWP protocol, at the same time, a current signal S2 of the UICC chip can also be correctly received, and accordingly, full-duplex communication is realized.

The invention provides a WeChat building video intercom system. The WeChat building video intercom system comprises a building video intercom gate machine, a building video intercom terminal and a WeChat platform. The building video intercom gate machine and the building video intercom terminal are respectively connected with the WeChat platform through a network. The building video intercom gate machine and the building video intercom terminal each comprises a WeChat communication module in communication with the WeChat platform, and the WeChat communication module performs two-way communication with the WeChat platform through a WeChat communication interface and receives or sends video data, audio data and control signals. In addition, the invention provides a communication method of the WeChat building video intercom system. The system can send the video and audio data acquired by the building video intercom gate machine to the WeChat platform, meanwhile the WeChat platform can send the received new audio data to the building video intercom gate machine, and accordingly video and audio communication functions of the building video intercom gate machine and the building video intercom terminal are achieved.

The present invention discloses a system and a method for obtaining of a real-time state of a charging pile. The system comprises a state monitoring module, a TCP module, a collection front server, aRedis memory database and an application program. The state monitoring module is configured to monitor the state of each charging pile in real time. The TCP module is configured to upload the state message of the current charging pile when the state monitoring module monitors the change of the state of the charging pile. The collection front server is configured to receive the charging pile statemessage uploaded by the TCP module and is configured to convert the charging pile state message to a charging pile state message in a JSON format and upload the charging pile state message through a WebSocket communication mode. The Redis memory database is configured to store the charging pile state message in the JSON format. The system and a method for obtaining of the real-time state of the charging pile employ the WebSocket communication mechanism to achieve more efficient and real-time update of the charging pile state.

The invention provides a webpage instant chatting method and apparatus based on websocket, and relates to the technical field of computers. The webpage instant chatting method based on websocket comprises the following steps: firstly, selecting an unoccupied port number in a server, and executing a script command via the port number, then modifying the configuration in a webpage, wherein the configuration is a connection mark number corresponding to the server, loading a websocket protocol in a webpage, achieving full-duplex communication between the server and the webpage on the basis of thewebsocket protocol, and the original request-response processing mode is changed by the processing process, the active interaction with the webpage by the server is achieved, and thus the user experience is improved in a webpage interaction process.

The invention belongs to the field of computer communication, and discloses a multi-serial data remote transmission device and method, which can be applied to realizing lower cost, stronger antijamming capability, bi-directional 144kbps transmission rate, and 3-5km transmission distance. The remote transmission device comprises a twisted-pair, and two RS232 to UNI interface modules respectively connected to two ends of the twisted-pair, wherein the RS232 to UNI interface modules are used for multiplexing RS232 serial signals of multiple data serial ports into one path of UNI interface signal, or branching the one path of UNI interface signal into the multiple RS232 serial signals; a pair of twisted-pair is used for transmitting the one path of UNI interface signal.

The invention discloses a communication method which is characterized in that the communication method is applied to a charging box, and the communication method comprises the following steps: building a carrier communication channel based on a first contact and a second contact after the first contact of the charging box is connected with the second contact of a wireless earphone; modulating a first parameter of a carrier signal of the carrier communication channel according to to-be-sent data; and demodulating a second parameter of the carrier signal to obtain data sent by the wireless earphone, the first parameter being at least one of an amplitude, a frequency and a phase, or the second parameter being an amplitude, the first parameter being at least one of a frequency and a phase. Theinvention also discloses a communication method, a charging box, a wireless earphone and a computer storage medium. Full duplex communication between the charging box and the wireless earphone is realized through a single contact, and the cost is reduced while the data transmission rate is improved.

The invention provides a three-dimensional D2D matching algorithm based on a software-defined wireless network (SDWN), and the algorithm comprises the steps: carrying out the centralized control of auser through the perception of equipment cache information in a global network through a controller under the architecture of the fusion of the software-defined network and the wireless network, and achieves the D2D full duplex communication. According to the invention, the DAC (D2D-aware cache) caching strategy and the full duplex D2D characteristics are utilized, and the whole network D2D user transmission rate maximization is realized by establishing a mixed integer programming problem. According to the algorithm, a power control algorithm with low complexity and high operation speed is applied to solve the problem that the transmission rate is reduced due to the fact that full duplex D2D users share CUE user spectrum resources; and on the basis of the graph theory model, a three-dimensional matching algorithm is constructed to carry out D2D full duplex matching and multiplexing channel distribution, and one-to-one matching is realized. The algorithm is different from an existing price-based three-dimensional matching algorithm, the algorithm complexity is low, and the implementation effect is slightly good.

The invention discloses a method and system for remotely controlling a terminal and the controlled terminal. In the method, an Android system and the same application software are installed on a control terminal and a controlled terminal. The method comprises the following steps that a controlled terminal obtains a screen capture picture of a current software interface of application software on the controlled terminal in real time, packages the screen capture picture into a data packet and forwards the data packet to the control terminal through a cloud server. And the application software ofthe controlled terminal receives the data packet forwarded by the cloud server, and obtains the control instruction from the data packet. Wherein the control instruction is generated based on the operation of a user on the screen capture picture displayed on the control terminal after the control terminal obtains the screen capture picture from the data packet and comprises an operation action and an operation parameter, and the operation action and the operation parameter are sent to the cloud server by application software on the control terminal. And the application software on the controlled terminal obtains the operation action and the operation parameter from the control instruction and executes the operation action and the operation parameter. The method can conveniently realize remote control under the condition that the method is not limited by the authority of the Android system.

The invention provides a bus-based control system. The control system comprises a sending bus and a receiving bus, master equipment connected to the transmission bus and the reception bus; and at least one sub-equipment connected in parallel to the transmission bus and the reception bus, wherein the main equipment receives a connection request message containing a protocol code and an equipment identifier from at least one piece of sub-equipment through a receiving bus; and a corresponding relationship between the equipment identifier and the protocol code is established, protocol informationcorresponding to the at least one piece of sub-equipment is determined according to the protocol code in the connection request message, and connection with the at least one piece of sub-equipment isestablished, through the sending bus and the receiving bus according to the protocol information corresponding to the at least one piece of sub-equipment and the equipment identifier. Correspondingly,the invention further provides a bus-based control method executed by the control equipment and a computer storage medium.

The invention discloses a transferable logic chip based on mechanical stripping and a preparation method thereof. The logic chip comprises a plurality of pairs of p-n junction quantum wells and a suspended GaN waveguide connected between the p-n junction quantum wells. A logical AND operation and a logical OR operation can be implemented between the plurality of pairs of p-n junction quantum wells. The p-n junction quantum wells can transmit optical signals to the outside and detect optical signals in the space, which means that the p-n junction quantum wells can detect the optical signals inthe space while emitting light, and the full-duplex communication is achieved. According to the invention, a transferable logic film chip is achieved for the first time by using the traditional semiconductor processing technology, after a device is stripped, the device is transferred to a flexible carrier, and the chip can be used in the fields of communication, illumination, intelligent display,logic operation and sensing.

The invention provides a power line carrier communication system based on digital-to-analog joint frequency-division and a full-duplex method. The system is suitable for band range from a few tens ofkiloherts to hundreds of megahertz; PLC equipment divides sending working band and receiving working band through an analog domain filter, two working bands are further refined by simultaneously utilizing the digital domain frequency conversion and the filter, thereby realizing multi-band and multi-bandwidth PLC full-duplex technology.

The invention belongs to the technical field of automatic control, and discloses an automatic control system for an advertising lamp box. The automatic control system comprises a display module, a first radio frequency communication module, a first control chip, a first storage module, a switch and a setting module which are arranged in the advertising lamp box, a second radio frequency communication module arranged on a train, and first laser geminate transistors and second laser geminate transistors arranged on the two sides of a track. The problems that due to the fact that in the prior art, the advertising lamp box is in the turn-on state for a long time, energy consumption is large, and due to the fact that the advertising content is not changed for a long time, the utilization rate of the advertising lamp box is low are solved, and the automatic control system has the advantages of saving electricity and increasing the utilization rate of the advertising lamp box.

The invention discloses a centralized control system and method for vehicle-mounted equipment of a special vehicle. The system comprises a centralized control host used for receiving a control instruction and a terminal used for sending the control instruction to the centralized control host. The terminal comprises a computer connected through a network and a programmable key connected through a serial port, wherein the computer accesses and acquires a control page through a browser, and issues the control instruction when a button on the control page is pressed down; the programmable key is akey as well as an OLED display screen and is used for dynamically switching display contents and issuing the control instruction corresponding to the display contents when the key is pressed down; and the control instruction comprises an equipment number and a control action, and the centralized control host queries a database to obtain instruction data corresponding to the control action and sends the instruction data to controlled equipment corresponding to the equipment number through a CAN bus. By adopting the system and the method, the operation difficulty of an operator in controlling the vehicle-mounted equipment can be reduced, and meanwhile, the monitoring efficiency of the vehicle-mounted equipment is improved.

The present invention discloses an Internet of things control device based on M2M. The device comprises an external acquisition circuit, a drive circuit, an alarm circuit, a communication circuit, an external power supply circuit, a storage circuit and a control circuit. The external acquisition circuit collects an external device working signal or an environmental signal, the external device working signal or environmental signal is processed by an MCU, and the external acquisition circuit is connected to the control circuit. The drive circuit is connected to the control circuit to control the external device. The alarm circuit is connected to the control circuit to provide an alarm signal. The communication circuit transmits data and control signals through wired transmission line or a GPRS wireless network. The external power supply circuit can provide multiple of voltage to the outside. The storage circuit stores external collection data, the alarm signal and the configuration information of the device.