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2341results about How to "Accurate transmission" patented technology

Method and apparatus for controlling uplink transmission power

The present description relates to a method for controlling uplink power in a distributed multi-node system, comprising the following steps: receiving reference signals from a plurality of antenna nodes containing at least one antenna; estimating average propagation loss on the basis of the receiving power of the reference signals received from the plurality of antenna nodes; receiving, via a downlink control channel, noise and interference (NI) information from a base station which contains the plurality of antenna nodes; and determining uplink transmission power using the estimated average propagation loss and the received noise and interference information.
Owner:LG ELECTRONICS INC

Powerline network system having data relay function

A powerline network system having data relay function includes a plurality of power monitoring zones mutually connected with a powerline network and at least one repeater. Each of the power monitoring zones has at least one power monitoring device. The repeater is connected with each power monitoring device in two adjacent power monitoring zones through powerlines and has a first and a second relay units. The first and second relay units employ two different sets of transmitting and receiving bands to fetch data contained in powerline signals transmitted by each power monitor in adjacent power monitoring zones. The data are received by a relay unit are modulated with different transmitting band and then transmitted to powerlines of another power monitoring zone. The repeaters are not required to be serially connected to the powerlines, and incorrect data read can be also eliminated.
Owner:ACBEL POLYTECH INC

Multiple channel ballast and networkable topology and system including power line carrier applications

Control systems and methods for independent control of power systems, particularly lighting network branches, and separate control of individual branch components. Multi-branch systems comprise independently controllable branches that inter-communicate via PLC communications. In each branch, components such as ballasts, local control units, sensors, actuators, and repeaters, may exchange commands and queries independently of a branch remote control unit (BRCU). Alternatively, a BRCU may manage or arbitrate communications, or interact with other BRCUs, other control units and external management systems. Ballasts include a multi-channel ballast that enables close-loop control of individual fixtures, or of individual dimmable or non-dimmable lamps within a fixture. The close-loop control is facilitated by sampling circuits / sensors co-located with each controlled fixture or lamp. All controllers are preferably implemented using an integrated digital controller. The PLC communication is preferably carried out by a direct spread spectrum method that eliminates side lobes from a cross-correlation function, using an anti-collision protocol.
Owner:S T L ENERGY SOLUTIONS & TECH

Earpiece 3D Sound Localization Using Mixed Sensor Array for Virtual Reality System and Method

A system and method for communicating with a virtual reality headset. The wireless earpieces are linked with the virtual reality headset. Playback of audio content is synchronized with visual content displayed by the virtual reality headset. The audio content is played in response to receiving the audio content from the virtual reality headset.
Owner:BRAGI

Method and apparatus for controlling uplink transmission power

The present description relates to a method for controlling uplink power in a distributed multi-node system, comprising the following steps: receiving reference signals from a plurality of antenna nodes containing at least one antenna; estimating average propagation loss on the basis of the receiving power of the reference signals received from the plurality of antenna nodes; receiving, via a downlink control channel, noise and interference (NI) information from a base station which contains the plurality of antenna nodes; and determining uplink transmission power using the estimated average propagation loss and the received noise and interference information.
Owner:LG ELECTRONICS INC

Internet teaching method and system

The invention provides an Internet teaching method and system for developing teaching activities through the Internet including a wireless communication network, and particularly discloses a method and system capable of recording the Internet teaching process in real time and accurately and efficiently storing the Internet teaching process in a cloud side. The method includes the step of evaluating educational document learning results by students to learn and distinguish learning situations of students of different levels, thereby achieving targeted differential teaching, tutoring, homework doing, exercising and the like and easily improving the learning efficiency and learning effect, especially continuously improving the students at different learning progresses. Furthermore, by means of a data return gateway, a data verification mechanism, a timestamp verification mechanism, an audio and video flow verification mechanism, a data complementary transmitting mechanism, a local fragmentation encrypting, storing and uploading mechanism and other means, recorded data is stored in the cloud side efficiently and accurately.
Owner:鹰硕(韶关)信息产业集团有限公司

Transmitter and Controlling Method Thereof

A transmitter is provided by the present application. The transmitter comprises a first element, configured to receive signal with a first frequency group, wherein first impedance value of the first element is changed according to a force, a second element with a second frequency group, and a tip section, configured to receive outputs of the first and the second elements and to transmit an electric signal, wherein the tip section is used to receive the force.
Owner:EGALAX EMPIA TECH INC

Method And Apparatus For Digitizing And Compressing Remote Video Signals

A method and apparatus for digitizing and compressing video signals for transmitting the signals between a remotely located computer and a host or local computer. The digitization and compression method and apparatus is capable of dividing frame buffers into cells and comparing image data from previously captured frame buffers to create synchronized video signals and transmit the video signals over an extended range by limiting the portions of the transmission bandwidth of pixel data transferred between the remote computer and the local computer. In an alternate embodiment of the present invention, a keyboard video mouse switch is disposed between the remotely located computer and the local computer.
Owner:COLEMAN SCOTT

Fixed-wing multi-shaft aircraft

The invention provides a fixed-wing multi-shaft aircraft, and belongs to the field of aircrafts. The fixed-wing multi-shaft aircraft comprises a fixed wing and a multi-shaft rotor wing rack which are connected with each other, and the multi-shaft rotor wing rack is provided with multiple rotor wing mechanisms; the rotor wing mechanisms comprise propellers and rotating shafts, the propellers are rotatably connected with drive devices, the drive devices are fixedly connected with the rotating shafts, and the rotating shafts are connected with rotating control mechanisms. The fixed-wing multi-shaft aircraft has the advantages of both a fixed-wing aircraft and a multi-shaft aircraft, can achieve a multi-shaft mode, a fixed-wing mode and a fixed-wing and multi-shaft mixed mode and also has the advantages of achieving vertical taking-off and landing and hovering and being high in flying speed and long in flying time.
Owner:CHENGDU XUESHANG TECH CO LTD

Full-automatic pipe cutting machine

The invention provides a full-automatic pipe cutting machine comprising a frame, and a charging device, a feeding device, a cutting device, a measuring device and a control device which are sequentially arranged on the frame horizontally; the cutting device comprises a cutter holder which is arranged on the frame, a plurality of first motors which are lined horizontally along a longitudinal direction and can be arranged on the cutter holder by moving up and down, a first cylinder which is connected with and drives each first motor to move up and down synchronously, a circular saw blade which is arranged on the output shaft of each first motor, a second motor which is in transmission connection with the input shaft of each first motor through a first transmission mechanism, and a bearing piece which is arranged on the tool rest below each circular saw blade and is used for bearing a pipe at a cut part; and the measuring device comprises a guide rail which is horizontally arranged on the frame, a slide frame which is movably arranged on the guide rail, a driving mechanism which is connected with and drives the slide frame to move along the guide rail, a pipe baffle which is arranged on the slide frame and a first pipe clamping mechanism which is horizontally arranged on the slide frame along the longitudinal direction. According to the full-automatic pipe cutting machine, more than one pipe can be cut at one time, and the machine has the advantages of high cutting efficiency, good cutting quality and the like.
Owner:冠达星股份有限公司

Sensor node device and method for supporting mobility of mobile node in sensor network

Provided are a sensor node device and method for supporting mobility of a mobile node in a sensor network. The sensor node device includes: a network interface for communicating with a sink node, at least one neighboring sensor node, and the mobile node; a mobility supervisor for detecting a location of the mobile node, and deciding a sensor node for a service of a data packet received through the network interface on the basis of the detected location; a transmission decision maker for deciding a transmission mode for the data packet received through the network interface according to the location of the mobile node; and a state reporter for reporting a transmission state of the data packet through the sensor node device. When the mobile node moves to a place where radio wave propagation areas of sensor nodes overlap each other, the radio wave intensity of each sensor node is detected to perform a handoff to the sensor node of the area having the strongest radio wave intensity. Thus, a ping-pong problem caused by unnecessary repeated handoff, and a delay problem caused by too slow handoff, can be prevented.
Owner:ELECTRONICS & TELECOMM RES INST

Method of and apparatus for correctly transmitting signals at high speed without waveform distortion

A driver circuit transmits a signal to a receiver circuit through a signal transmission line. The driver circuit has an output driver, a front driver, and a level adjuster. The front driver drives the output driver, and the level adjuster adjusts the output level of the front driver. The output driver generates a signal whose level is variable in response to an output level of the front driver.
Owner:FUJITSU LTD

A video communication method

This invention discloses a video communication for video chat which mainly utilizes a camera to pick up images of facial expression or limbs actions of a chatter and transmits the image data to the communication terminal which analyses the data to get the chatter's facial expression and limbs actions so as to express them by cartoons to be sent to the object to realize the delivery process of converting video images to cartoons.
Owner:VIMICRO ELECTRONICS CORP

Rotary shaft coupling

A rotary shaft coupling is provided that can accurately transmit rotation of one rotation axis to another rotation axis even when shaft core misalignment is present between the rotation axes, and has superior durability, without generating noise.In a rotary shaft coupling 1 including a pair of joint halves 2a and 2b that are respectively attached to opposing axial end sections 12a and 12b and transmit rotation of one axis 11a to another axis 11b, outer teeth 6a of a gear are provided on one joint half 2a and inner teeth 6b that mesh with the outer teeth 6a and have a same number of teeth as the outer teeth 6a are provided on the other joint half 2b. Each outer tooth 6a and each inner tooth 6b are formed to absorb shaft core misalignment between both axes 11a and 11b and perform rotation transmission by having an involuted tooth profile of a same module and a tooth flank of the involuted tooth profile displaced in a circumferential direction.
Owner:ENPLAS CORP

Digital meter recognition system and method based on vision

InactiveCN103984930ARealize automatic data identificationAchieve recordCharacter and pattern recognitionTemplate matchingFeature extraction
The invention discloses a digital meter recognition system and method based on vision. The system comprises a digital meter, a vidicon for collecting dial plate images of the digital meter and a PC for image digital recognition. The vidicon is connected with the PC through a USB interface or an image collecting card. The vidicon collects digital meter images and uploads the digital meter images to the PC. The PC carries out image preprocessing, image character segmentation and character tilt correction on source images in sequence, and finally a BP neural network template is used for character recognition. In the character recognition, according to the structure features of seven sections of digitrons, seven-feature scanning is carried out, and high recognition rate can be achieved through small calculated amount; the character images are subjected to character tilt correction, extracted recognized features are matched with the template, and the accuracy of character recognition is improved; and the recognition method based on a BP neural network with an on-line training function is used, the stability of a recognition algorithm is enhanced, and robustness is improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1

Stiffness-adjustable flexible joint actuator mechanism

The invention discloses a stiffness-adjustable flexible joint actuator mechanism. The actuator mechanism is divided into an actuation end, an adjustment end and a flexible joint. The actuation end provides power for movement of the flexible joint, the adjustment end is responsible for changing stiffness of the flexible joint, and the flexible joint has the functions of relieving impact and adjusting stiffness. The actuator mechanism is additionally provided with a drive motor, and the joint can be actively driven to move. By the adoption of a variable-stiffness system in a curved bevel and rotary wheel matching structure, friction resistance is little and transmission is precise. Four absolute type encoders are installed, effective detection is achieved in the work process, sensitivity is high, and the fault rate is low. A shell is fully closed, the structure is compact, and the actuator mechanism can work in the severe environment. Changes of joint stiffness are linearly controllable from great flexibility to complete stiffness.
Owner:ZHEJIANG UNIV

Remote upgrade method and remote upgrade device for wireless sensor network node

The invention relates to a remote upgrade method and a remote upgrade device for a wireless sensor network node and belongs to the technical field of communication, computers and Internet of things. Hardware of the device includes a network controller and a wireless sensor network node; software of the device includes three parts, namely upper computer software, network controller driving software and node driving software; an upper computer software interface is used for displaying all remote online wireless sensor network nodes, supporting for manually loading APP files of the nodes to an upper computer, supporting selecting to-be-upgraded nodes, sending instant to-be-started APP file fragments, and waiting for automatic remote upgrade completion of the nodes; during a data sending process, a multiple-check and resending mechanism is adopted, so as to ensure that the APP files are accurately sent to target nodes; and when special situations such as power failure occur to a node upgrade process, automatic re-upgrade is performed after restart, and finally self firmware update is completed. The remote upgrade method and the remote upgrade device are capable of solving the problem that the technology of the Internet of things is vigorously developed and wireless sensor nodes are widely applied, but upgrade is difficult, and saving manpower and financial resources, thereby being beneficial to promotion of development of the industry of the Internet of things.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Side link discontinuous reception method

The invention provides a side link discontinuous reception method, which solves the problem that an existing method is not suitable for a side link communication discontinuous reception mechanism. Theside link discontinuous reception configuration parameters are used for enabling a terminal in side link communication to be periodically in an activated or non-activated state of a discontinuous reception mechanism, and at least comprise one of the following parameters is included: a side link discontinuous reception time parameter, a side link discontinuous reception timer and side link communication activated state end starting time; the side link discontinuous reception time parameter is used for indicating the period length, the activation state starting time and the activation durationof a discontinuous reception mechanism; the sidelink discontinuous reception timer is used for indicating the duration of an activated state when the side link communication terminal performs side link communication; wherein the start time for ending the activated state of the side link communication is the time for the terminal to enter the non-activated state after the data interaction is endedin the side link communication. According to the method, a discontinuous reception mechanism is used in side link communication.
Owner:CHINA ACADEMY OF INFORMATION & COMM

Robot navigation system avoiding obstacles and setting areas as movable according to circular distance from points on surface of obstacles

The content of the voice designation of a designator is recognized by a voice recognition part 130 at the time of controlling a robot, and the content of the indication of gesture or the like is recognized by an image recognition part 120. A movement destination and a map around the specific position designated are referred from a map data base 150 registering the position of an obstacle and the current position estimated by a self-position estimation part 140. After movement ease is decided by a movement ease decision part 112, the behavior is decided. When movement designation is given to the robot, correspondence according to a situation can be performed.
Owner:HONDA MOTOR CO LTD

Portable electrocardiograph, electrocardiogram monitoring system, and electrocardiogram monitoring method using the same

Electrocardiogram data and acceleration data obtained by a portable electrocardiograph of each patient are transmitted to a radio base station, and transmitted from the radio base station to a hospital computer via a public network, a line L, and a TA. Electrocardiograms and accelerations of a plurality of patients are displayed on the screen of the hospital computer based on the electrocardiogram data and acceleration data in real time. In the portable electrocardiograph, a communication device and an interface unit for communication are separated from other components by a ground plane, and an electrocardiogram measurement device is separated from the other components by a ground plane. Two of the ground planes are provided between the communication device and the interface unit for communication and the electrocardiogram measurement device.
Owner:PANASONIC HEALTHCARE HLDG CO LTD

System for treating organic exhaust gas by adsorptive-catalytic combustion

The invention discloses a system for treating organic exhaust gas by adsorptive-catalytic combustion. The system comprises a pretreatment filter which communicates with and sucks the organic exhaust gas, a main adsorption fan which exhausts the adsorbed exhaust gas and a main fixed adsorbent bed which is connected between the pretreatment filter and the main adsorption fan through a pipe and usedfor adsorbing the exhaust gas; the exhaust pipe of the main adsorption fan is connected with a gas monitoring apparatus which is electrically connected with a control device; the entrance of the mainfixed adsorbent bed is connected with a catalytic bed through a main desorption fan via a pipe; the exit of the catalytic bed is connected with the exit of the main fixed adsorbent bed through a pipe; a temperature sensor in electric connection with a control device is arranged in the catalytic bed; and the main fixed adsorbent bed is connected in parallel with an auxiliary fixed adsorbent bed which conducts an alternative adsorptive or catalytic process with the main fixed adsorbent bed. The invention has the advantages of effectively guaranteeing the treatment efficiency of the organic exhaust gas, replacing manual operation with automatic control and effectively improving the production safety degree, the equipment operation reliability and the economy.
Owner:深圳盈和环境物联科技有限公司

3G video transmission method and system based on compression sensing

The invention provides a 3G video transmission method and system based on compression sensing in a video monitoring scene, and belongs to the field of data compression and video transmission. After the format of video information collected by a camera is converted into the YUV format through color space conversion, H.264 coding is conducted, compression processing of compression sensing is conducted on coded data, video data streams obtained through compression are transmitted in a 3G network according to the RTSP protocol and the RTP / RTCP protocol, and reconstruction processing of compression sensing and the H.264 decoding process are conducted at a terminal so that restored video information can be obtained. Compression sensing is combined with the RTSP protocol and the RTP / RTCP protocol to be used in the 3G video transmission system, and therefore the system can meet the requirement for instantaneity of video transmission from the aspects of control and data, the system has the self-adaption video coding speed and network transmission speed regulation function, the size of the data transmitted through a network can be greatly reduced, broadband resources are saved, and the transmission efficiency of the system is improved.
Owner:CHONGQING UNIV

Digital map position information compressing method and device

The present invention provides a method and apparatus for compressing data of position information such as a road on a digital map in order to realize an accurate transmission of the position information in a small volume of data. A shape vector of an object road segment is resampled, and as this occurs, a sampling point is represented by quantized angle information. By selecting preferably the sampling point and an angle resolution of the quantized angle information, an error in position information can be reduced. For example, in a method for compressing position information by setting appropriately an angle resolution δ which constitutes a quantization unit of an angle, the angle resolution is set according the length of a resampling length L which regulates an interval of resampling, a road shape contained in a digital map is divided into one or a plurality of segments, road shapes in the segments are resampled by a constant resampling length L, and the position of the road shapes is represented by a data string of quantized angle information indicating the position of a sampling point, and data of the data string are variable length coded for transmission. By making the angle resolution δ and the resampling length L interlock with each other, the angle resolution is made small when the resampling length is long, whereas when the resampling length is short, the angle resolution is increased, whereby position information such as road can be transmitted accurately in a small volume of data.
Owner:PANASONIC CORP

Control protocol and corresponding remote video supervisory control system

The invention relates to a control protocol and a corresponding remote video monitoring system, wherein, the control protocol uses a TCP way for transmission in an IP network, and controls the protocol content to adopt an XML pattern; the remote video monitoring system consists of a monitoring front-end (1), a signaling cut-in server(21), a central server (22), a medium cut-in server, a monitoring client end (3), and an IP network, and the control protocol is adopted in the monitoring of the front-end register and the information signaling transmission. The information transmission of the control protocol is instantaneous, and is realized simply and is convenient to be extended, the corresponding remote video monitoring system has the advantages that the signaling-control information response speed is rapid, at the same time, the networking is convenient, the extending is easy, and the load sharing is achieved, thereby increasing the system function.
Owner:ZTE CORP

Method for handling channel conflict in direct mode and terminal

The embodiments of the invention disclose a method for handling a channel conflict in a direct mode and a terminal. Correct transmission of service data can be ensured, and the user experience can be improved. The method comprises the following steps: a first terminal receives a first SCI sent by a second terminal and a second SCI sent by a third terminal; the first terminal detects whether the second terminal and the third terminal have a channel conflict according to the first SCI and the second SCI; and if the second terminal and the third terminal have a channel conflict, the first terminal generates a channel conflict message, and sends the channel conflict message so the second terminal and the third terminal can resend service data according to the channel conflict message. The embodiments of the invention further disclose a terminal. According to the embodiments of the invention, correct transmission of service data can be ensured, and the user experience can be improved.
Owner:HYTERA COMM CORP

Buffer state report transmission method and device therefor

Provided are methods and apparatuses for transmitting a buffer status report in carrier aggregation environment. The method may include receiving, from a base station, high layer signaling including information for configuring data duplicate transmission using carrier aggregation, configuring a plurality of radio link control (RLC) entities including a first RLC entity and a second RLC entity associated with one packet data convergence protocol (PDCP) entity based on the high layer signaling, and configuring a logical channel associated with the first RLC entity and a logical channel associated with the second RLC entity to one medium access control (MAC) entity; and when the data duplicate transmission is activated, transmitting, to the base station, the buffer status report including PDCP data volume in both a logical channel group associated with the first RLC entity and a logical channel group associated with the second RLC entity.
Owner:KT CORP

Robot control device, robot control method, and robot control program

The content of the voice designation of a designator is recognized by a voice recognition part 130 at the time of controlling a robot, and the content of the indication of gesture or the like is recognized by an image recognition part 120. A movement destination and a map around the specific position designated are referred from a map data base 150 registering the position of an obstacle and the current position estimated by a self-position estimation part 140. After movement ease is decided by a movement ease decision part 112, the behavior is decided. When movement designation is given to the robot, correspondence according to a situation can be performed.
Owner:HONDA MOTOR CO LTD
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