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221results about How to "Simplify communication" patented technology

Security data communication achieving method based on quantum key distribution

The invention discloses a security data communication achieving method based on quantum key distribution. In traditional data communication based on quasi single-photon source quantum key distribution, a large number of quantum bits will be consumed in the data reconciliation process, and quantum key distribution efficiency is low. According to the security data communication achieving method based on quantum key distribution, a new quantum security communication model is built, the data reconciliation process is omitted, original key error codes are equivalent to channel error codes, and data secrecy transmission is achieved by exchanging the encryption and decryption sequence and the channel coding frequency. Dolay coding with the high error correcting capability is adopted for channel coding, original keys are used for encrypting and decrypting the coded data in a one-time pad mode, Dolay decoding is carried out on the decrypted data with error codes, and verification is carried out in an experiment system. Research results show that the quantum key distribution process is simplified, the key security is enhanced, computing and communication resources are saved, the key generating rate is improved, and a new idea is provided for quantum key distribution.
Owner:PLA UNIV OF SCI & TECH

Multifunctional service robot

InactiveCN103640019AConvenient communicationFacilitate man-machine communicationManipulatorService systemControl function
The invention relates to a multifunctional service robot. The service robot comprises an outer shell, a bottom-layer master controller, a motor and walking wheels, wherein the motor drives the walking wheels to rotate to enable the robot to move; the bottom-layer master controller comprises a controller, a motor driving unit and a power supply unit, a Linux system is arranged inside the controller, the controller is connected with a communication port, the motor driving unit controls rotating of the motor, and the power supply unit can provide working voltage for the controller and the motor driving unit; the robot is provided with a tablet computer, and various function operations allowing a user to choose are displayed on the front end interface of the tablet computer. The user can control the robot by choosing the function operations displayed on a touch screen of the tablet computer, the function operations displayed on the front end interface comprise a control function operation for controlling the robot, a music function operation, a teaching function operation, a product introduction and a service system monitoring function operation capable of providing information related to the robot, and the function operations are very easy and convenient to achieve and more humanized in design.
Owner:ZHONGSHAN DAGU HI TECH ELECTRONICS

Intelligent household electrical appliance equipment, terminal and intelligent household electrical appliance equipment network distribution system

The invention relates to intelligent household electrical appliance equipment, a terminal and an intelligent household electrical appliance equipment network distribution system. The intelligent household electrical appliance equipment comprises a first near-field communication module which is used for transmitting identity information of the intelligent household electrical appliance equipment to the terminal within the preset range and receiving wireless connection information returned by the terminal; and a wireless communication module which is used for connecting wireless routing equipment according to the wireless connection information. According to the technical scheme, near-field communication has the characteristics of high privacy so that mixing of other equipment in the network distribution process of the intelligent household electrical appliance equipment can be avoided. Besides, near-field communication also has the characteristics of high communication speed and simple communication process so that the intelligent household electrical appliance equipment is enabled to simply and rapidly acquire network distribution information from the terminal through the near-field communication mode and then access to the wireless routing equipment to complete network distribution.
Owner:MIDEA GRP CO LTD

Distributed network crawler URL (uniform resource locator) duplicate removal system and method

The invention provides a distributed network crawler URL (uniform resource locator) duplicate removal system and method. The system comprises crawler collection sub-nodes, a central server and a database server. The method comprises the following steps that: each crawler collection sub-node registers to the central server; the crawler collection sub-node obtains a URL from a database waiting queue and obtains new URL information from the URL; the crawler collection sub-node performs first-level duplicate removal on the newly obtained URL; if the first-level duplicate removal fails, the URL is discarded; if the first-level duplicate removal succeeds, the newly obtained URL is added to a local URL abstract table and sent to the central server; the central server performs second-level duplicate removal on the newly obtained URL; if the second-level duplicate removal succeeds, the URL is added to a global URL abstract table; and the crawler collection sub-node adds the link of the URL to the waiting queue. According to the system and method provided by the invention, the duplicate removal task concentrated on the central node can be decomposed to the crawler collection sub-nodes through the first-level duplicate removal by a hierarchical duplicate removal mechanism, and the central server maintains a global duplicate removal table through a second-level duplicate removal mode, thus the system expansion is remarkably facilitated, and the system design, deployment and operation are very flexible and convenient.
Owner:CHINA ACADEMY OF INFORMATION & COMM

Decoding device and method for rotary transformer based on single FPGA (Field Programmable Gate Array)

The invention discloses a decoding device for a rotary transformer based on a single FPGA (Field Programmable Gate Array), which comprises a DSP (Digital Signal Processing) control circuit, an FPGA circuit, an analogue-to-digital conversion circuit, an input signal conditioning circuit, an output excitation signal buffer circuit and a rotary transformer; the FPGA circuit is electrically connectedwith the analogue-to-digital conversion circuit; the input end of the output excitation signal buffer circuit is electrically connected to the analogue-to-digital conversion circuit, while the outputend of the output excitation signal buffer circuit is electrically connected to the rotary transformer; the output end of the rotary transformer is electrically connected to the input signal conditioning circuit; the output end of the input signal conditioning circuit is electrically connected to the analogue-to-digital conversion circuit; and the DSP control circuit is electrically connected with the FPGA circuit. Meanwhile, the invention also provides a decoding method; an analogue-to-digital conversion circuit is gated by the FPGA circuit; and the gated rotary transformer is subjected to acquisition and calculation of angle position, velocity and acceleration of a motor. The aim of simple communication among peripheral circuits and the modules and flexile system structure is realized.
Owner:LANZHOU JIAOTONG UNIV

Data bus middleware of Internet of things

ActiveCN102857505ASimplify communication application operationSimplify communicationBus networksNetwork packetMessage type
The invention discloses a data bus middleware of the Internet of things, which is used for realizing the data transmission, task scheduling and scheduling inspection. The data bus middleware of the Internet of things comprises a client-side and a plurality of server-sides, wherein after the communication data is encapsulated into a data packet by the client-side according to a configuration file of a communication protocol, according to the service configuration of the client-side and through the communication function of the client-side, all server-sides are called; the service terminal which responds to the calling establishes a bidirectional micro-channel communication service list according to the communication calling of the client side; a message analysis module of the server sides is used for unpacking the received data packet to get the message type in the data packet; in addition, the server sides that respond to the calling utilize the loading information collecting function of the task scheduling module to get the loading information of other server-sides and write the loading information of other server-sides in a task distributing forwarding table; then the server side that completes the task is determined by combining the load balancing algorithm with the task distributing forwarding table; and an external interface of the server side corresponding to the calling is connected to realize task forwarding.
Owner:SHANGHAI DEV CENT OF COMP SOFTWARE TECH
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