525results about How to "Shorten communication time" patented technology

A traffic information providing system externally acquires traffic information including information relating to the travel time of a link, calculates a travel time for a non-provision link to which no travel time is provided through estimate / complement operation. The estimate / complement operation is carried out with use of travel times, emergencies, travel times of links in the vicinity of the non-provision link, and so on, obtained in the near past. The system stores and statistically processes the externally-acquired traffic information, and also estimates a travel time in the near future. When there is an abnormality in the acquired traffic information, the system deletes the abnormality, regards the information as a non-provision link, calculates a probability distribution of travel times of links, calculates a probability distribution of travel times of the entire route made up of a plurality of links, and also calculates a probability for a specific travel time range.

In order to reduce overhead of a CPU, a relay apparatus for relaying communication from a CPU to a peripheral device includes communication information holding sections for holding information required for communication with the peripheral devices inside the relay apparatus; and command holding sections, which are provided adjacent to the communication information holding section, for holding commands used to communicate desired information inside the communication information holding section to the peripheral device. The CPU writes desired information in the communication information holding section and the command holding section inside the relay apparatus by burst-mode communication, and the relay apparatus performs communication with the peripheral devices in accordance with instructions from the command holding section after the writing of the desired information in the communication holding section and the command holding section is completed.

The present invention provides a navigation device which performs communication with an information-providing server device. The navigation device (3) includes a communication section (11) which transmits a message to the server device for a response confirmation, and receives a response message with respect to the message from the server device; a response value obtaining section (12) which determines a time duration from a time when the message is transmitted to another time when the response message is received, and obtains a response value indicating a communication state in relation to a communication time on the basis of the determined time duration; and a communication-parameter setting section (13) which determines an optimal communication parameter on the basis of the response value obtained by the response value obtaining device, and sets the optimal communication parameter in a communication parameter in relation to a communication disconnection condition used in the navigation device (3).

Method and device for evaluating simultaneously, with the same equipment, physical parameters such as the absolute permeability and the porosity of fragments taken from a fragmented natural or artificial porous medium The porosity of the fragments is measured by means of helium pressure tests according to a protocol known in the art. The chamber (1) containing the fragments is communicated with a tank (11) whose volume is also known and containing helium at a known pressure. At pressure balance, the value of the solid volume can be deduced. The rock envelope volume and the fragments mass are also measured. Combining these measurements allows to determine the porosity of the samples and the density of the rock. Their permeability is then measured by immersing them in a viscous fluid and by communicating the chamber with viscous fluid at a determined pressure contained in a vessel (9) so as to compress the gas trapped in the pores of the rock, according to two different protocols. The values of the physical parameters are determined by modelling the evolution of the pressure or of the volume in the chamber and by means of an iterative adjustment. Applications: petrophysical measurements from drilling cuttings or crushed cores for example.

A navigation apparatus acquires geographic information from a server apparatus. When the navigation apparatus does not store any geographic information that provides a continuous route from the starting point to a destination point, it transmits data of the starting point and destination point to the server apparatus to acquire therefrom geographic information that provides a continuous route from the starting point to the destination point. This efficient acquisition of geographic information realizes reduction of communication time and communication costs.

In a vehicle-onboard dedicated short-range communication (DSRC) apparatus for the DSRC communication system, a command judgment unit of an electronic toll communication-security application module (ETC-SAM) judges the type of command included in a communication signal transmitted between a HOST and an IC card with user information held therein. A command control unit of the ETC-SAM controls whether the command is to be analyzed, according to a result of judgment by the command judgment unit. Therefore, it is possible to simplify a communication procedure and reduce a communication time.

A communication device has a first communication section that supports a first communication mode having a low communication rate and a second communication section that supports a second communication mode having a higher communication rate than the first communication mode. The communication device includes a packet generation section and a communication control section. The packet generation section generates a first portion containing authentication information used for connection authentication for the second communication mode and a second portion other than the first portion. The communication control section performs control to cause the first communication section to transmit the first portion and to cause the second communication section to transmit the second portion after the connection authentication succeeds using the authentication information contained in the first portion.

An inductive power transfer system comprises a power transmitter (101) and a power receiver (105). The power transmission system supports two-way communications. The power receiver (105) first initiates a mandatory configuration phase by transmitting a signal strength package and the power transmitter and receiver then operates (505, 507) the mandatory configuration phase wherein a first set of power transfer operating parameters are selected for the power transmitter (101) and the power receiver (105). The power receiver (105) subsequently transmits (509) a request to enter a negotiation phase and the power transmitter (101) acknowledges (511) the request by transmitting an acknowledgement. It then enters the negotiation phase. The power receiver (105) enters the negotiation phase in response to receiving the acknowledgment message. The power receiver (105) and power transmitter (101) then determines (513, 515) a second set of operating parameters by performing the negotiation phase. The approach is particularly suitable for a Qi power transfer system.

The invention relates to the technical field of measurement, and particularly relates to a measurement system based on a cloud technology. The measurement system based on the cloud technology comprises a cloud server, a cloud client and at least one measurement terminal connected through a network; the measurement terminal transmits data to the cloud server by network connection; the cloud client obtains the required measurement data from the cloud server; a user carries out operations such as inquiring, displaying, outputting, utilizing and estimating the measurement data through the cloud client, and achieves coordinated or associated measurement, which cannot be finished by the traditional measurement technology, of associated objects at difference scenes. Thus, the measurement time is shortened; a plurality of measurement terminals can carry out real-time monitoring and remote measurement on the measured object at the same time; the measurement system can be widely applied to associated measurements among a plurality of sites, a plurality of factories, a plurality of workshops, a plurality of suppliers and a plurality of parts; the rejection rate is reduced; the inventory time is reduced, and consumption of manpower and material resources is also reduced.

In data communication using radio communication, an inactivity timer value is changed according to various states, so that an unused time of a communication channel in a non-communication time is decreased, and channel use efficiency is raised. A unit for judging an application of packet data to be transmitted and received by a radio base station 408 / a radio base station controller 405 is provided, or an inactivity timer value is set through a port number in TCP / UDP header and a traffic pattern and according to a communication content, and the set inactivity timer value is used to control a change from a connected state to a dormant state.

An information distribution center constantly obtains the latest traffic information from a traffic information center. A user registers one or more routes at the information distribution center in advance. A navigation apparatus accesses the information distribution center using a mobile communication device to request distribution of traffic information relating to a route registered at the information distribution center. In response to the request from the navigation apparatus, the information distribution center sends traffic information relating to the relevant route to the navigation apparatus.

A waiting time of an automated guided vehicle is substantially eliminated by significantly shortening the communication time of various information, and the transport efficiency of an automated guided vehicle as well as the operating rate of work stations and production lines as a whole are improved, and in addition, the flexibility of an operation control system for the automated guided vehicle is improved. An automated guided vehicle (1) includes a wireless local area network adapter (11) for passing information by radio with an operation control unit connected to the local area network or with another automated guided vehicle, a memory part (12) for storing at least information from the operation control unit or from another automated guided vehicle and information related to the automated guided vehicle itself, and a control part (14) for controlling the wireless local area network adapter and the memory part.

A navigation system and navigation equipment which reduce the time required for radio transmissions to implement fast navigational guidance. The navigation equipment communicates bi-directionally by radio with a navigation server, thereby providing navigational guidance. The navigation equipment transmits position data delivered by a GPS receiver to the navigation server through a communication device and acquires, from the communication device, map data for display indicative of a map of a surrounding area including a self-location provided by the position data sent back from the navigation server. The navigation equipment then performs map matching between road information contained in the acquired map data for display and the position information, thereby determining a current position on the road, thereby displaying a map in the form of an image on a display unit in accordance with the map data for display and displaying the current position determined by the map matching on the map displayed in the form of an image.

The invention discloses a method of distributing a network source among multiple applications of a terminal. The method comprises the following steps that: the terminal determines a distribution proportion of a network application program running in a foreground to a network bandwidth source according to a set proportion and determines a distribution proportion of each network application program to an undistributed network bandwidth source according to operation actions (counted by the terminal) of a user to each network application program, and the terminal distributes the network bandwidth source for all the network application programs according to the distribution proportion of each network application program to the network source bandwidth source. The method can dynamically adjust the bandwidth distribution in real time according to the operation of the user, and is used for solving the problem that the data communication time of the current application program is increased as the network source is occupied by other background application programs under the condition of starting a plurality of application programs.

The invention is applied to communication field, and provides an interconnected enterprise cluster communication apparatus and interconnected enterprise cluster communication method thereof. The apparatus comprises a central server, more than one cluster user list server and more than one enterprise instant communication system; the cluster user list server has a one-to-one correspondence with the enterprise instant communication system, which is used for storing the interconnected enterprises cluster user list involved of the corresponding enterprise instant communication system. In the invention, the received cluster information containing interconnected enterprise cluster number is transmitted according to the interconnected enterprise cluster user list stored in the corresponding cluster user list server by the enterprise instant communication system, and the central server transmits the cluster information containing the interconnected enterprise cluster number sent by the enterprise instant communication system is transmitted to the corresponding enterprise instant communication system according to the stored interconnected enterprise cluster user list, thereby being capable of meeting the requirements of IM user for large-scale cluster discussion among different enterprises, shortening communication time and reducing communication cost.

A method and device evaluate simultaneously, with the same equipment, physical parameters such as the absolute permeability and the porosity of fragments taken from a fragmented natural or artificial porous medium. The porosity of the fragments is measured by means of helium pressure tests according to a protocol known in the art. The chamber (1) containing the fragments is communicated with a tank (11) whose volume is also known and containing helium at a known pressure. At pressure balance, the value of the solid volume can be deduced. The rock envelope volume and the fragments mass are also measured. Combining these measurements allows to determine the porosity of the samples and the density of the rock. Their permeability is then measured by immersing them in a viscous fluid and by communicating the chamber with viscous fluid at a determined pressure contained in a vessel (9) so as to compress the gas trapped in the pores of the rock, according to two different protocols. The values of the physical parameters are determined by modelling the evolution of the pressure or of the volume in the chamber and by means of an iterative adjustment.

A system comprising a wireless tag and a tag reader. The tag comprises: a sensor for generating a detected information; a storage for storing the detected information; a determination unit for storing a criteria information and outputting a result of determination on the detected information on the basis of the criteria information; and a communication control unit for transmitting the determination result in response to receiving a request. The reader transmits the request to the tag and receives the determination result from the tag.

The invention discloses an intelligent engineering operation and maintenance supervision method. The method comprises an infrastructure layer, an information resource layer, an application support layer, an application layer and a user layer. The infrastructure layer is used for providing a network, hardware and server environment, securing platform operation. The information resource layer provides basic information data and service data, and uploads the data to an application support layer. The application support layer aggregates dispersed and heterogeneous applications and information resources. Through unified access entry, basic services are provided for an application layer. The application layer provides a software operation entrance for the user layer, the user layer provides a system visual operation interface for a user, and the application layer comprises a project management system, a construction management system, an inspection management system, an operation and maintenance management system, a knowledge base management system, an asset management system, a statistical report system, a process management system, a system management system and a WeChat applet. The engineering project is integrally supervised, so that the operation and maintenance management cost is reduced, and the working efficiency is improved.

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.

The invention discloses an intelligent car and a positioning method used for an intelligent transportation physical simulation platform. Different from a radio frequency identification method in application to an electronic license plate, the positioning method includes the steps that a card reader is arranged inside the car when the intelligent car is positioned and navigated, passive electronic labels are laid on the road surface, and each passive electronic label corresponds to coordinates in a global coordinate system; when the intelligent car passes above the passive electronic labels, the card reader identifies UIDs of the passive electronic labels, and pose information corresponding to the UIDs is determined and used for correcting the position of a miniature inertia navigation system. The simulation platform can be used for experiment research and simulation display on intelligent vehicle coordination in a vehicle-vehicle and vehicle-road network environments, and uses an embedded system carried on the intelligent car for processing positioning information and then directly controlling the car, and therefore communication time is shortened.

The embodiment of the invention discloses a method for demonstrating user state, a virtual image demonstration terminal, and a virtual image server. The method comprises the following steps: acquiring user raw information from an information source; analyzing the user raw information to obtain user state information; obtaining a user virtual image matched with the user state information from a virtual image data base according to the user state information; and informing the virtual image demonstration terminal to demonstrate the user virtual image. According to the method for demonstrating the user state, the virtual image can reflect the real mood and state of the user to a certain extent, thereby providing a novel self-expression way for the user. Besides, in tense modern life, friends can communicate with each other not only through telephone calls and short messages, thereby saving the communication time.

Provided is a project management system based on cloud computation. The system comprises a project management cloud service which is arranged on a cloud terminal and multiple terminal devices which are accessed to a network. Project personnel use the terminal devices to visit the project management cloud service via the network and perform corresponding operation. According to the project management system based on the cloud computation, all tasks in a project can be managed and monitored in effective and concentrated way, and the project-related personnel are permitted to acquire project-related information more accurately and rapidly and perform various project management activities by using the cloud computation service.

The invention relates to a message packet transmission system and relative message packet transmission method, wherein said method comprises that: based on the number of packet and message content, generating and sending packet transmission request; analyzing the request; inquiring the communicator numbers relative to the packet numbers; sending message to relative terminals. The system comprises client terminal, server and database, while the client module stores the communicator information, the pocket information formed by several communicators, and message content, to generate and second packet transmission request; server analyzes the request, sends message to the terminals; database real-time stores the communicator information, pocket information and message content of client module. The invention has low cost and simple operation.

The present invention discloses a compressing method of the data recorded by the electric power waveform. The compressing process includes the steps of: the collected data is performed by the integer small wave conversion based on the rising format and then all the data having been converted is coded in the Huffman method; the decompressing process includes the steps of: each pressing data that is read in bit is decoded in Huffman method, and then the data having been decoded is performed by the integer small wave contra-conversion. The present invention has the characteristics of a small amount of computing, a high compressing rate, a small distortion factor, a small occupied computer resources, etc. and the method can be realized in a flushbonding system. The compressibility and the distortion factor can be adjusted according to the demand and the flexibility of the using of the software is added. The present invention can also provide a threshold value to the detail information to realize the lossless compressing and the lossy compression. The electric power system waveform recording device in the present can realize a long-time and continuous recording waveform by combining the electric hardware technology under the situation of high sampling rate and big capability and the waveform can be transmitted far away through the communication interface reliably and quickly.

A data transmitter includes (a) first communication means performing data transmission according to IrDA Standard, (b) second communication means performing data transmission that does not comply with the IrDA Standard and (c) means for switching between a process performed by the first communication means and a process performed by the second communication means. The second communication means includes (a) management information transmitting means for sending management information for managing transmission target data according to a data transmission prosecution command from a user, (b) communication capability information receiver means for receiving communication capability information indicating communication capability of a device that has responded to the transmission of the management information and (c) data transmission means for transmitting a packet including the transmission target data on the basis of the communication capability information. This can make the communication time shorter than the conventional communication time in infrared communication.

The invention discloses a communication system and a communication method of a multi-online air conditioner. Inner machines connected on a communication bus and with only address marking information are detected and recorded by the inner machines. The inner machines receive broadcast data frames sent by an outer machine and send responding data frames according to an address order in sequence. On the condition that unchangeableness of the prior communication speed and reliability are guaranteed, communication efficiency of the inner machines and the outer machine is increased and communication time is shortened by means of the communication method of the multi-online air conditioner.

The invention discloses a method and a system for restoring a database. The method includes: receiving parameter information relevant to restoration of an existing database; downloading compressed files of backup files of the existing database according to the parameter information; decompressing the compressed files to obtain the backup files of the existing database; and restoring the existing database by using the backup files and the parameter information. The method and the system can realize the process procedure of automation and parallelization of database restoration, thereby increasing efficiency of restoring the database.

There is provided a wireless communication device that includes a first communication portion that performs non-contact communication with an other wireless communication device and receives unit specific data indicating the other wireless communication device's communication function; a second communication portion that can communicate wirelessly faster than the first communication portion; a determination portion that determines, based on the unit specific data, whether the other wireless communication device's communication function is compatible with the second communication portion; and a format conversion portion that converts a format of transmission data that is transmitted to the other wireless communication device to a format that reduces the volume of the transmission data. If the determination portion determines that the other wireless communication device's communication function is not compatible with the second communication portion, the first communication portion transmits the transmission data to the other wireless communication device in the converted data format.

Traffic situation determination systems, methods, and programs acquire a current position of the vehicle based on a radio signal received from a GPS satellite and determine a first travel path of the vehicle based on the acquired position of the vehicle. The systems, methods, and programs determine whether a road on which the vehicle is traveling has a traffic jam. If the road on which the vehicle is traveling has a traffic jam, the systems, methods and programs transmit first information relating to the first travel path from the vehicle to an information center. The systems, methods, and programs receive second information relating to a second travel path of the vehicle, the second information being received from a mobile phone communication center and being based on a mobile phone signal received by the mobile phone communication center. The systems, methods, and programs determine a road corresponding to the first travel path as having a traffic jam and determine a road corresponding to the second travel path, and not corresponding to the first travel path, as having no traffic jam.