122results about How to "Reduce communication data volume" patented technology

A service searching system for searching a service in a distributed system comprises a wireless server device and a wireless terminal device. The wireless server device is connected to a network and implements a master search service. On the other hand, the wireless terminal device implements a slave search service, and is capable of communicating with the server by wireless and utilizing the master search service. Besides, the wireless terminal device comprises a storage means that caches service objects obtained through the master search service. In addition, in searching the slave search service for a service, the wireless terminal device begins by searching the service objects cached in the storage means. In the case where the service is not detected, the wireless terminal device searches the master search service. The service objects are cached by being related to priority data. Thereby, there is provided a service searching system comprising a wireless terminal device, which is intended to search for a service in a distributed system in which a range of services are distributed in a network, wherein it is possible to cut down a service-searching time and costs, and further, it is possible to cut down communication interruptions by noise etc. in the wireless communication section compared to the conventional one.

In a communication-type navigation system for downloading map data according to the present invention, a reduction in the amount of map information to be transferred, correction of a position measured by a GPS, and delivery of advertisements are effected. In this system, a terminal 5 stores rough map data in advance. Then, when detailed map data is required, it is downloaded from a map data delivery center to the terminal 5. Further, together with the map data, GPS correction information is delivered to the terminal 5 from the map data delivery center 80. Still further, coupon information associated with an advertisement is displayed and an electronic mail on the coupon information is issued, by the map data delivery center.

The invention discloses a vehicle-road cooperative road traffic system, which comprises a road side system, an edge computing system, vehicle-mounted terminal equipment, a central cloud platform and an intelligent traffic management and control system. The road side system is deployed on a traffic road and is used for acquiring vehicle information in real time and acquiring multi-dimensional traffic information; the edge computing system is deployed on the edge side, close to the traffic road and a traffic data source, of the front end of the vehicle-road cooperative road traffic system, cooperates with the central cloud platform, and receives and executes an adjustment vehicle-road cooperative optimization control strategy of the central cloud platform; the vehicle-mounted terminal equipment is arranged in a vehicle, is in communication connection with the road side system or / and the edge computing system and is used for acquiring vehicle information and multi-dimensional traffic information in real time, and the central cloud platform is in communication connection with the edge computing system and is used for receiving edge node information of the edge computing system; and theedge computing system manages and controls traffic facilities according to the adjustment vehicle-road collaborative optimization control strategy of the central cloud platform and a control scheme,thereby realizing management and control of vehicle-road collaborative road traffic.

The invention discloses an expressway weather monitoring system, relating to the technical field of traffic safety facilities. The expressway weather monitoring system comprises weather monitoring point devices arranged at each road section and district of the expressway, and control terminals arranged at the entrances of the expressway, wherein the weather monitoring point device comprises a main microprocessor, an environment temperature measurement module, a wind direction transducer module, an ice transducer module, a visibility measurement module, a CAN (Controller Area Network) bus transmission and receiving driver, an earth surface temperature measurement module, a clock chip, a GSM (Global System for Mobile Communications) / GPRS (General Packet Radio Service) remote communication module, a wind speed transducer module, an RS 232 communication interface circuit and a CAN bus; and the control terminal comprises a GSM / GPRS remote communication module, a monitoring display module and a PC work station. The invention has the advantages of reliable work, high cost performance and long service life, and is suitable for the application occasion of expressway with complicated environmental conditions.

An HTML (Hyper Text Markup Language) file processing method of the invention comprises: specifying a character string not influencing a display at a user terminal in an HTML file received from another server according to a request from the user terminal by referring to a definition data storage storing data for specifying the character string not influencing the display at the user terminal; and changing the HTML file so as to reduce data amount in accordance with a method corresponding to an attribute of the specified character string, and transmitting the changed HTML file to the user terminal. As stated above, because the data amount of the HTML file is reduced by performing the processing with respect to the character string not influencing the display at the user terminal, the user at the user terminal is unconscious of the performance of the method according to this invention, and the smooth communication of the Web page data including the HTML file becomes possible. Besides, because the data amount is reduced, the communication charge can also be reduced.

The invention provides a streaming media audio file play method based on a mobile terminal memory card cache technology, in the method, a predetermined storage region in a memory card externally connected with the mobile terminal is used as a cache region specially used for caching the streaming media audio file, so that one or more integral streaming media audio files can be stored in the cache region, users can repeatedly listen to the audio files only by reading the cached files again without downloading from a streaming media server, time and data communication cost are saved for the users, and the cache occupies no memory capacity of a mobile terminal processor and has no influence on system processing capability of the mobile terminal; simultaneously, a technical means of the mobileterminal external memory card is mature and used widely, technicians of the field can easily set the cache region in the memory card, and maneuverability is very strong.

The invention discloses an urban vehicle navigation positioning method based on road lamp assistant positioning. According to the method, road lamps on both sides of an urban road are taken as navigation positioning reference road signs, and the IDs of the road lamps are numbers in order that each road lamp ID number corresponds to one piece of fixed position information; meanwhile, wireless communication equipment is arranged on the road lamps, the ID number of the road lamp which is nearest to a vehicle passing by is acquired through Bluetooth communication, the position information of the road lamp can be acquired by inquiring a road lamp position database, and navigation is performed by taking the position of the road lamp as the position of the vehicle. Through adoption of the method, accurate positioning can be realized when the vehicle runs in a tunnel or a road beside which high buildings exist even though a satellite navigating signal is shielded; moreover, only Bluetooth equipment needs to be arranged on a portion of urban road lamps in cities, the modification amount is small; the Bluetooth equipment only needs to provide the number of the road lamp on which the Bluetooth equipment is positioned, thereby realizing small communication data side, low time consumption and adaptability to high running speeds of vehicles.

The invention discloses a video live broadcast method for wearable devices, comprising processing at a sender and processing at a receiver. The sender decreases the spatial resolution of a high-definition video signal four times and then executes standard video encoding so as to greatly reduce the pressure put on a wireless network by the encoding data, and the receiver restores the proper resolution through super-resolution reconstruction. Time-domain motion matching needed for super-resolution reconstruction is speeded up with the help of inherent motion vector information of a video encoder. Moreover, a reconstruction residual error compensation link is introduced into a video codec loop to eliminate distortion between a super-resolution high-definition image and a real high-definition image. The mobile video live broadcast efficiency of wearable devices is improved greatly under the premise of no additional damage to the quality of high-definition videos.

The invention discloses an image target detection method, which is applied to a parallel processing chip of a heterogeneous platform, and comprises the steps of receiving bounding box information of aplurality of target object bounding boxes obtained by performing target identification on an image through a convolutional neural network; storing the bounding box information to a random access memory RAM; executing a local maximum search operation based on a non-maximum suppression algorithm on the read bounding box information in a multi-path parallel manner to obtain a preset number of to-be-output bounding boxes; and transmitting the bounding box information of the bounding box to be output to a central processing unit (CPU) of the heterogeneous platform, so that the CPU outputs an imagetarget detection result. According to the invention, the communication data volume of the parallel processing chip and the CPU in the image target detection process can be reduced, and the image target detection efficiency is improved. The invention further discloses an image target detection system, electronic equipment and a storage medium, which have the above beneficial effects.

The invention discloses a data transmission processing method and system. The method comprises: A, data is compressed at a data transmitting terminal, the size of the compressed data is compared with the size of the original data, if the size of the compressed data is less than that of the original data, the compressed data is sent, otherwise the original data is sent; and B, at a data receiving terminal, the received original data is directly stored, and the received compressed data is decompressed and then stored. The system comprises the data transmitting terminal and the data receiving terminal, wherein the transmitting terminal is used for executing the step A, and the receiving terminal is used for executing the step B. The invention also discloses a light-emitting diode (LED) display system, comprising a display control module, an LED control panel, a memorizer and an LED display screen, wherein the display control module is taken as the data transmitting terminal in the methoddisclosed by the invention, and the LED control panel is taken as the data receiving terminal in the method disclosed by the invention. According to the invention, the transmission speed for displaying data in a low-cost display system and the operational performance can be improved.

Image processing parameters including the sensor pitch, optical low-pass filter, and spectral transmittances of color component filters of an image sensor are transmitted to a photographing lens. After the start of image capturing, it is determined whether to send a transmission request of recovery filters to the photographing lens. To send the transmission request, capturing parameters set for image capturing are sent to the photographing lens. Recovery filters corresponding to the capturing parameters, which is created by the photographing lens based on the image processing parameters, are received from the photographing lens, and stored in a memory.

In a communication-type navigation system for downloading map data according to the present invention, a reduction in the amount of map information to be transferred, correction of a position measured by a GPS, and delivery of advertisements are effected. In this system, a terminal 5 stores rough map data in advance. Then, when detailed map data is required, it is downloaded from a map data delivery center to the terminal 5. Further, together with the map data, GPS correction information is delivered to the terminal 5 from the map data delivery center 80. Still further, coupon information associated with an advertisement is displayed and an electronic mail on the coupon information is issued, by the map data delivery center.

The invention provides a high voltage electricity capacitive equipment dielectric loss on-line monitoring method. The method comprises the steps of synchronously collecting a leakage current signal of monitored equipment, a voltage signal of the output end of a transformer PT and a reference voltage signal of a selected reference voltage source according to a synchronous sampling signal of a synchronous generator; obtaining effective values of the leakage current signal and the voltage signal, a phase difference value between the leakage current signal and the reference voltage signal and a phase difference value between the voltage signal and the reference voltage signal; obtaining data of the effective value and the phase difference values through a wireless communication module; calculating to obtain parameters such as the leakage current of the monitored equipment, the dielectric loss factor and the electric capacity. The invention further provides a high voltage electricity capacitive equipment dielectric loss monitoring system used for implementing the above method. According to the high voltage electricity capacitive equipment dielectric loss on-line detection method, the communication data size in monitoring can be decreased, the defect of timing by using wire communication and a satellite is avoided, and the monitoring cost is reduced.

The apparatus comprises a mainframe, an IC card and a USB card. The mainframe comprises a core integrated circuit for demodulating, de-multiplexing and decoding the digital TV program. The mainframe and the IC card are connected through the hardware interface of the IC card. In the IC card there is a conditionally receiving system, for decoding the authorization data and encryption control word of digital TV, for use in controlling the watching right of user to the specific TV program. In the USB card there is a value added service unit for de-multiplexing, de-scrambling and decoding the digital TV signals. The mainframe is connected to USB card through the hardware interface of the USB card. The IC card and USB card are connected through communication bus in the mainframe.

The data communication device and method include storing road map information indicating locations of nodes and links, a time when a vehicle enters one link and an identifier of the link, and a vehicle location and the link identifier in a memory, periodically acquiring vehicle position data, identifying the link based on the road map information, and comparing the identified link with the link the vehicle has passed through a node. The device rewrites the position data and acquired time stored in the memory when receiving a result that the vehicle has not passed, determines an exit time based on the acquired time and the time of last acquired position data when receiving a result that the vehicle has passed, calculates a travel period of the vehicle, writes the exit time as an entry time, rewrites the link identification data, and transmits the travel period to a given communication destination. The invention can reduce the amount of communication data so as to reduce communication cost and to avoid congestion.

The invention provides a double-end traveling wave fault positioning method of a power transmission line. The method comprises the following steps that: S1, one detection device for detecting travelling wave signals is installed on the power transmission line every 10-15 km; S2, a sensor module receives current and voltage signals in the circuit, a sampling system carries out sampling and recording on the current and voltage signals, an A / D conversion module processes the signals, and the data is transmitted to a main control center through a communication module; S3, after the main control center analyzes the received data and discovers a fault traveling wave signal, a second fault traveling wave signal in the detection device An adjacent to the detection device Am corresponding to the fault traveling wave signal is found, and analysis and calculation are carried out according to the fault traveling wave signal and the second fault traveling wave signal, the time for a first travelling wave head to respectively arrive at the detection devices Am and An is obtained; and S4, the position of a fault point is calculated. According to the invention, the fault position is accurately calibrated, and the precision is high.

The invention provides a method and terminal for monitoring a video image of a power system. The monitoring method is applied to a monitoring terminal and comprises the following steps: acquiring video image data of the power system; extracting monitoring data from the video image data; determining whether the power system is abnormal or not according to the monitoring data; and when the power system is abnormal, uploading the monitoring data to a background monitoring center. By adopting the method and terminal for monitoring the video image of the power system provided by the invention, thecommunication data amount, the communication cost and the maintenance cost of the background monitoring center can be reduced.

The invention provides a power transmission line fault positioning method based on a non-contact sensor. The method comprises the following steps of: S1, installing one detection device for detecting travelling wave signals every 10-15 km on a power transmission line; S2, receiving current and voltage signals in the circuit, and transmitting the current and voltage signals to a main control center through a communication module; S3, after the main control center analyzes the received data and discovers a fault traveling wave signal, finding a second fault traveling wave signal in the detection device An connected with the detection device Am corresponding to the fault traveling wave signal, and according to the fault traveling wave signal and the second fault traveling wave signal, calculating the time for a first travelling wave head to respectively arrive at the detection devices Am and An; and S4, calculating the position of a fault point. According to the invention, the power transmission line fault positioning method is high in positioning precision and can be widely applied to a high-voltage power transmission network.

A configuration comprises a destination address extracting / rewriting device 4 for extracting a destination address of a packet; a common-route packet extracting device 8 for extracting two or more packets having a common route at least in part of routes to their respective terminals from a plurality of packets, based on their extracted destination addresses; an aggregate packet creating device 9 for aggregating the plurality of packets having the common route at least in part of the routes to create an aggregate packet including information of each of the packets; a destination address giving device 10 for giving the aggregate packet a destination address so that the destination address of the aggregate packet is an address of an adjacent node on the common route; and an aggregate packet routing device 11 for routing the aggregate packet, based on the destination address.

A Business to Business electronic commerce (BtoB) system includes a message exchanging section, a task processing section and that conforms to BtoB standard specifications, and a difference processing section is added. For an outgoing business document, the difference processing section creates difference information between a past transaction and a new transaction within the range of the BtoB standard message format and sends the message to a business counterpart. For an incoming business document, the difference processing section restores a new transaction based on a past transaction and difference information.

The invention discloses a road information real-time acquisition device and method based on a traffic monitoring video. The device is characterized in that the device comprises a video processor, a network module, a remote server, a data pusher and a data receiver. The video processor reads a video image corresponding to a monitoring device. According to acquired pictures, the grayscale value X of each pixel in each picture is acquired, and is compared with a pre-stored parameter value X-1. A nuclear method is used to assess road congestion extent ci, and ci is uploaded. A remote server carries out real-time analysis to acquire a road congestion extent value C. The data pusher transmits the information of a congested road to the data receiver, and the data receiver outputs the information. According to the invention, the video processor analyzes the real-time image grayscale; the nuclear method is used to assess and upload the congestion extent; the data pusher transmits the information in real time; the receiver carries out real-time broadcasting; a driver can acquire the road information in real time and can timely plan a route; and congestion is reduced.

The invention provides a batch authentication method and system of RFID (Radio Frequency Identification) tags. The method comprises the following steps: a reader acquires a frame length f and random number r from an authentication server; the reader sends scanning signals carrying the f and the r to all RFID tags in a broadcasting manner; and when the scanning signal from the reader is received, the RFID tags sends response signals to the reader in a time slice determined by self-stored serial number k, the f and the r. The reader constructs the received response signals into a response vector ES and sends the response vector ES to the authentication server; and the authentication server carries out one-by-one detection on vector elements ES(i) in the ES, and when invalid response signals are not detected, the authentication is successful, otherwise the authentication is failed. The invention has the advantages that the batch authentication of a great amount of RFID tags is realized, the authentication speed is high, and the efficiency is high.

The invention discloses a method and system for distributed deep learning parameter quantization communication optimization based on discrete cosine transform, and the method comprises the steps: carrying out the discrete cosine transform of a gradient value in the distributed deep learning, carrying out the compression processing, carrying out the inverse quantization operation when the weight isupdated, and forming a distributed deep learning system with the high communication efficiency. Before a working node sends gradient data to a parameter server, gradient values are processed by adopting gradient division, GPU parallel computing, discrete cosine transform and quantization and high-frequency filtering compression methods, and then the processed gradient values are pushed to the parameter server. And the working node obtains the weight from the parameter server through a pull operation, and then updates the weight on the current working node by adopting inverse discrete cosine transform and inverse quantization and error compensation updating methods. According to the method, the communication efficiency between the working node and the parameter server in an existing distributed deep learning framework can be effectively improved, and the model training speed is increased.

The invention discloses a microgrid load coordination control simulation system and modeling method. The microgrid load coordination control simulation system comprises a microgrid element layer, a coordination control layer, an intermediate communication layer, an agent node layer and a control decision layer; the microgrid load coordination control simulation modeling method comprises the following steps: establishing the microgrid simulation system; prioritizing load models, monitoring the running states and the running parameters of the load models and the running states and the running parameters of distributed power models in real time, and calculating the respective remaining power generation capacity; acquiring the operating state of a microgrid in real time, calculating the maximum power supply capacity of all current micro power supplies, comparing the maximum power supply capacity with the required electrical load to obtain the maximum addable access load, judging whether to send a load cutting instruction; according to the received load cutting instruction, cutting off the load models according to pre-divided priorities of the load models. Through the microgrid load coordination control simulation system and modeling method, the loads can be prioritized to achieve the optimal coordination control of the loads, and actual needs of microgrid load coordination control simulation modeling can be met better.

The invention provides a distributed power supply voltage control method based on a hybrid layered multi-agent system. The method comprises the following steps that: (1) the hybrid layered multi-agent system is constructed; (2) distributed power supply cluster agents obtain voltage maximum and minimum values of each line; (3) a trend model is simplified; and (4) the voltage of a line node is judged, if the voltage of the node is lower than a voltage limit value, boosting is carried out, and if the voltage of the node is higher than the voltage limit value, then voltage reduction is carried out. According to the invention, the task load of a single Agent is reduced, the calculation time is shortened, the algorithm is simplified, the amount of communication data is reduced, and the communication time is shortened; in addition, a communication line is annularly designed, communication lines are added as few as possible, and the reliability of the system is simultaneously improved.

The invention discloses a parameter fitting-based voltage controlling method for active distribution feeders. The method is characterized by including the steps: 1, a master control unit acquires voltage state information of each feeder; 2, if a voltage minimum of each feeder is lower than a lower limit, parameter fitting-based feeder reactive power voltage-regulation or loading shedding operating voltage controlling is performed; 3, a voltage maximum of each feeder is higher than an upper limit, parameter fitting-based feeder reactive power voltage-regulation or parameter fitting-based feeder active power voltage-regulation is performed. The method has the advantages that all calculation tasks are performed in the master control unit, using great storage space is avoided, data communication quantity and communication times are decreased, and communication time and calculation time are shortened.

The embodiment of the invention provides a playing control method and device and a terminal. The method comprises the following steps: creating a playlist, wherein the playlist is used for storing to-be-played multimedia information, sending a playing request to playing equipment, receiving an acquisition request sent by the playing equipment, wherein the acquisition request indicates to acquire the multimedia information stored in the playlist, and sending the multimedia information to the playing equipment according to the acquisition request. According to the scheme, after the playing request is sent to the playing equipment, the acquisition request sent by the playing equipment is received, the multimedia information is sent to the playing equipment according to the acquisition request, the terminal only sends the information necessary for the playing equipment to the playing equipment, so that the communication data size between the terminal and the playing equipment is small, and compared with the prior art, the control efficiency of playing control is improved.