3217results about How to "Wide coverage" patented technology

The present invention relates to an method of medium access control for a wireless system that makes possible a subscriber station located out of coverage area of a base station communicate with the base station with the help of a relay station. The method includes broadcasting a polling packet by the relay station during the contention period, receiving the polling packet by the relayed subscriber station, transmitting a packet by the relayed subscriber station to the relay station during a predetermined period, and transmitting the packet to the base station by the relay station in the contention period after passing the predetermined period.

A communication system includes a first wireless communication device disposed onboard a vehicle system having two or more propulsion-generating vehicles that are mechanically interconnected with each other. The communication system also includes a controller configured to be disposed onboard the vehicle system and operatively connected with the first wireless communication device in order to control operations of the device. The controller is configured to direct the first wireless communication device to switch between operating in an off-board communication mode and an onboard communication mode. When the first wireless communication device is operating in the off-board communication mode, the device is configured to receive remote data signals from a location that is disposed off-board of the vehicle system. When the first wireless communication device is operating in the onboard communication mode, the device is configured to communicate local data signals between the propulsion-generating vehicles of the vehicle system.

A method of wireless data communication in a data processing system comprise the steps of providing a wireless data communication device, in which installed are a wireless transceiver module for receiving and transmitting data information, and a controller and an interface module for controlling the wireless data communication device; establishing an information exchange channel between the device and the data processing system based on a serial or parallel connection or wireless communication interface; wherein the wireless data communication device transmits or receives the data information through the wireless transceiver module via a public wireless network. The device is connected with a variety of data processing equipments, such as, a computer host through a variety of interfaces, and has a wireless transceiver module which can receive or transmit information through a mobile telephone network, uses directly communication services provided by the mobile telephone network company, and thus has the advantages of being online at any time but at low cost. It can also connect to the Internet for transmitting and receiving information so as to realize wireless access to the Internet.

Systems and methods disclosed herein provide secure, efficient, and mutually authenticated cryptographic key distribution. A client or client manufacturer may pre-generate and pre-encrypt the cryptographic keys, store the encrypted keys within the client, and deliver such keys to the serving network's access server via the client, while also relying upon, if available, the authentication performed by a trusted access server of an intermediate network which the client must traverse in order to obtain access the serving network. If not available, a client password stored within the client may be used to enable client authentication by the serving network prior to acceptance of the delivered cryptographic keys.

An apparatus for ultrasound irradiation of a body part (208) includes a first ultrasound transducer (216), and a second ultrasound transducer (212) mounted oppositely, and is configured: a) such that at least two ultrasound receiving elements, for determining a relative orientation of the first to the second transducer, are attached to the first transducer; b) for a beam, from the first transducer, causing cavitation, and / or bubble destruction of systemically circulating microbubbles, within the body part; or c) both with the attached elements and for the causing. The apparatus registers, with said first transducer, the second transducer, by using as a reference respectively the features a) and / or b). A detachable subsystem includes either a therapy or imaging transducer, to form a combination imaging and therapy system, the subsystem being configured for removable coupling to correspondingly an imaging or therapy subsystem comprising a head frame (204) to which is mounted an imaging or therapy transducer, the imaging or therapy subsystem for registering the imaging or therapy transducer, one to the other, by the above method.

Text summarizers using relevance measurement technologies and latent semantic analysis techniques provide accurate and useful summarization of the contents of text documents. Generic text summaries may be produced by ranking and extracting sentences from original documents; broad coverage of document content and decreased redundancy may simultaneously be achieved by constructing summaries from sentences that are highly ranked and different from each other. In one embodiment, conventional Information Retrieval (IR) technologies may be applied in a unique way to perform the summarization; relevance measurement, sentence selection, and term elimination may be repeated in successive iterations. In another embodiment, a singular value decomposition technique may be applied to a terms-by-sentences matrix such that all the sentences from the document may be projected into the singular vector space; a text summarizer may then select sentences having the largest index values with the most important singular vectors as part of the text summary.

A backlight module for LCD monitors and method of backlighting are disclosed, in which a dome-shaped lens and a LED light source are employed in the backlight module. This method includes the preparation of a LED light source and a dome lens, fitting the dome lens over the light source, attaching the dome lens and the light source under the optical lens sheets, whereby the optical lens sheet closest to the light source is at a vertical distance X therefrom. The hemispherical lens provides light coverage on the optical lens sheet in a peripheral areas with diameters ranging from 2X to 7X, as compared with the small area (diameter X) using the conventional technique. The dome lens is constructed with a light emergent plane on one side, and a light incident plane around hollow cavity in the center.

An anti-interfering method of short-range FMCW radar includes designing a set of pseudo-random code according to occasion of radar, distributing different pseudo-random code to different radar operated at different area, applying different pseudo-random code to modulate frequency start-point of FM emission signal for the same radar on each cycle, making frequency-mixture on received echo signal by utilizing emission signal, using filter to filter off interference signal and applying FM signal processing means to treat reserved usable signal for obtaining object distance and speed information in high resolution.

Timestamp information can be placed in a frame that includes a first portion processable at a selected layer of a protocol stack and a second portion processable at a lower protocol layer of the protocol stack subsequently to the processing of the first portion, wherein the first portion is contained within the second portion and wherein a numerically computed error detection code for the second portion is computed during processing of the second portion. A timestamp signature having a timestamp subfield of initialized data and a corrector subfield of initialized data is embedded in the first portion during processing thereof at the selected protocol layer. A numerical constant functionally equivalent to the numerically computed error detection code is determinable from the initialized data in the timestamp subfield and the corrector subfield. The data in said timestamp subfield is modified with timestamp information subsequently to processing of the second portion at the lower protocol layer. The data in the corrector subfield is then modified such that the numerical constant as determinable from the modified data in the timestamp subfield and the corrector subfield remains unchanged, whereby the numerically computed error detection code computed at the lower protocol layer remains valid.

The invention discloses an unmanned perception based unmanned aerial vehicle route planning method for rapidly planning the vehicle driving route. According to the invention, based on the unmanned flight perception system, road video images around a target vehicle are photographed by utilizing an unmanned flight to be sent to a ground station; the ground station receives the video images and processes the video images so as to obtain the vehicle and road messages, route planning is carried out according to the vehicle position, and the route is transmitted to the unmanned aerial vehicle; and a computer module of the ground station calculates a flight control signal to control the unmanned aerial vehicle to follow the vehicle to proceed, and corrects the route in real time. According to the invention, based on an unmanned flight platform, the operation state is stable; and the road environment around the vehicle is photographed from a great height, the coverage area is wide, and the observed road traffic information is distinct and clear, so that the road distribution condition and the traffic condition around the target vehicle can be obtained rapidly, the reasonable route planning can be obtained, the route is more precise, and the road condition analysis is more timely and accurate.

The invention discloses a prediction method and visualization method of traffic jam. The methods comprise the following steps: GPS data sent back by a taxicab is utilized for being associated to roads in an electronic map through the map matching method; the road section speed calculated in terms of the matched data is utilized for judging the traffic state of road sections; the evolution rule of the traffic jam, including formation and dissipation of the traffic jam, is extracted with the utilization of the historical data; the traffic jam prediction is performed with the utilization of the sliding time window scheme after a real-time traffic information database is associated; the congestion intensity and the influence range of congested road sections can be presented by a thermodynamic chart after the congestion intensity of the congested road sections is calculated based on the prediction result. The prediction method provided by the invention can realize highly accurate traffic jam prediction, and the visualization method of the thermodynamic chart enables the traffic jam to be visualized and understandable, so that the location and the influence range of the traffic jam can be discerned conveniently.

The invention discloses an intelligent relaying system and an intelligent relaying method implemented by an unmanned aerial vehicle, belonging to the technical field of unmanned aerial vehicle application. The system comprises a wireless signal generation device, a flying type relaying service device and a wireless network device. The flying type relaying service device is in wireless connection with the wireless signal generation device and the wireless network device, and comprises the unmanned aerial vehicle and an onboard wireless network relay, wherein the wireless signal generation device is suitable for generating wireless signals in a certain scope; the flying type relaying service device is suitable for realizing relaying amplification through the wireless signals, and the unmanned aerial vehicle is capable of intelligently controlling own flight status according to the needs of the wireless network device. According to the invention, the wireless network device needed to access to a near-end wireless network is tracked in real time by the unmanned aerial vehicle, the wireless signals of a remote wireless transmission network are amplified in a manner of relaying through the onboard wireless network relay, and thus, a fast, reliable, steady and high-efficiency network access service is provided for a tracking target.

The invention discloses a vehicle information remote monitoring and fault diagnosis system. The system comprises an intelligent vehicle-mounted terminal which is installed on a vehicle and is used foracquiring vehicle fault information and real-time state information, a cloud server platform and an intelligent mobile terminal. The system is used for instantly analyzing and processing a vehicle fault, and graphically displaying the various kinds of data of a vehicle on the intelligent mobile terminal. The invention also provides a vehicle remote diagnosis method. When the vehicle has a fault,the vehicle-mounted terminal can automatically transmit a fault code to cloud, a cloud management platform analyzes the fault code and matches a corresponding solution scheme to the user vehicle-mounted terminal, nearby selectable repair manufacturers are pushed to a user via GPS, and the user can check the real-time operation state information of the vehicle through the intelligent mobile terminal APP. Through the intelligent mobile terminal, a driving habit and vehicle fault hidden troubles are checked. A driver can correct a bad driving habit through the mobile terminal and potential safetyhazards of the vehicle are reduced.

Overhead antenna live inventory locating systems and methods are provided. The overhead antenna inventory / locating system can include a plurality of antennas mounted in an elevated support structure. The antennas can be coupled to RFID readers that interrogate electronic tags. The inventory system can analyze the information received from the detected electronic tags and produce inventory data and location information for the tags. The antennas can be patch antennas mounted to ceiling tiles such that they can be positioned in the ceiling of a facility. The antennas can be configured to provide broad coverage from a relatively low ceiling height. The low-cost antennas can be configured in such a way as to provide accurate location information for detected tags. The inventory system can be configured to provide near real-time inventory and location information.

The invention provides a distribution network automatic system based on broadband wireless communication and a realization method thereof. The distribution network automatic system comprises a distribution transformer data collecting and monitoring device, a broadband wireless communication network and a monitoring center, wherein the distribution transformer data collecting and monitoring device is arranged in a transformer site for collecting and processing electric power parameters, transmitting data to the monitoring center by the broadband wireless communication network so as to responds to a control command sent by the monitoring center. In the realization method, the distribution transformer data collecting and monitoring device is connected with the monitoring center by the wireless communication network, a protocol in coincidence with electric power 101 protocol for the data transmission is set; and the distribution transform data collecting and monitoring device collects and processes the existing distribution transform parameters of the distribution transformer and responds to the control command from the monitoring center. The invention adopts a modular system architecture design, has upward and downward compatibility, and can realize various wireless broadband module communication services; in addition, the design of stipulations of an agreement of the monitoring center is based on the electric power 101 protocol and is compatible with protocols realizing different versions.

The present invention provides a wireless access control method, relay station and base station. The wireless access control method according to the present invention is characterized in that under the control of said base station, information of said subscriber station and said base station is received and forwarded via a wireless channel by using the relay station. Said method further comprises the steps of: uplink bearer data and control information from said subscriber station being first received by said relay station and then forwarded to said base station; downlink bearer data from said base station being first received by said relay station and then forwarded to said subscriber station. Said base station sends control information directly to the subscriber station. The present invention further comprises a relay station for implementing the above method and an improved base station. In the method and devices provided by the present invention, with the introduction of relaying access technique, subscriber stations located with the long distance to the base station or in shadowing areas may be connected by relaying.

The present invention provides a method and device of error correcting database and a method and system of automatic error correction. The method of error correcting database includes following steps: collecting journal information, including user input history recorder; sequence information utilizing the input history recorder, acquiring character error correcting relation from the journal information; storing the character error correcting relation to obtain an error correcting database. The invention excavates the manual error correcting information by recording and collecting journal containing user input course information to generate an error correcting database to achieve more correctly automatic error correction for more users, the invention is also used for individuation automatic error correction of user. Since the error correcting information of the invention is obtained from the journal containing user input course information, the invention is more complied with user needs, and more exact relative to analyzing and debug of computer.

A projectile tracking system for acquiring and precisely tracking a projectile in flight in order to reveal the source from which the projectile was fired. The source is revealed by the back projection of a 3-dimensional track file. In preferred embodiments the system is installed on a vehicle, such as an un-manned blimp or other aircraft, road vehicle or ship, for locating and destroying small arms fire directed at the vehicle. A kill system may also be included on the vehicle to destroy the source of the projectile.

The invention belongs to the technical field of data synchronism, and particularly discloses a data synchronism ETL (Extract Transform Load) system. The data synchronism ETL system comprises the following function modules: a context parameter configuration module, a synchronous interface definition module, a synchronous script generation module, a workflow configuration module, a data synchronism core module and a log and prewarning module, wherein the context parameter configuration module, the synchronous interface definition module and the synchronous script generation module are basic modules and are operated according to the sequence of the modules to generate a script; the workflow configuration module mainly plays the role of a dispatching center, and configures the script in a workflow to realize parallel or serial execution, parallel progress amount, and what time or condition a task is triggered; when anomaly or an error task occurs in the execution steps, the log and prewarning module captures an error reason, and informs system management personnel of the error reason. The data synchronism ETL system is provided with a bidirectional synchronism mechanism, and is capable of supporting data sources configured with multiple context names and accessing multiple environments, the coverage of the synchronism method is wide, meanwhile, a complicated user-defined synchronism method is supported, and the expansibility is stronger.

There is provided a method for obtaining at least one calibration filter for a Mass Spectrometry (MS) instrument system. Measured isotope peak cluster data in a mass spectral range is obtained for a given calibration standard. Relative isotope abundances and actual mass locations of isotopes corresponding thereto are calculated for the given calibration standard. Mass spectral target peak shape functions centered within respective mass spectral ranges are specified. Convolution operations are performed between the calculated relative isotope abundances and the mass spectral target peak shape functions to form calculated isotope peak cluster data. A deconvolution operation is peformed between the measured isotope peak cluster data and the calculated isotope peak cluster data after the convolution operations to obtain the at least one calibration filter.

The invention discloses a vehicle traveling analysis method based on gate plate recognition data. The method comprises the steps that individual traveling is recognized based on preprocessed gate plate data; group dividing is conducted on gate plate recognition data based on plate numbers, sorting is conducted according to time, and a gate sensing sequence is generated; a single traveling is recognized according to traveling time threshold values sensed by front and rear gates, and the gate sensing sequence of the vehicle is segmented into a plurality of sub traveling sequences; based on traveling sub sequence information of the vehicle, individual traveling information of the vehicle is extracted combining with the gate sensing sequence. According to the method, traveling regularities andcommuting characteristics of the vehicles can be analyzed from the perspective of an individual vehicle object based on vehicle individual traveling information, and vehicle and residential place recognition is included; an OD matrix between each gate sensing pair and traffic flow of a significant road section can be obtained from the level of aggregation counting; group dividing can be conductedon the vehicles by combining with plate attributes to conduct counting analysis on traveling characteristics of different vehicle groups, and characteristic aggregation sorting of non-local vehiclesis included.

The invention discloses an automatic webpage classification method and a system. The method comprises the following steps: S1: searching website webpages related to a client webpage, and capturing titles and variable data information of the webpages therefrom to form a webpage list set; S2: processing characters in the webpage list set to form a classification keyword list set; S3: statistically gathering the frequency of occurrence of classification keywords in the classification keyword list set on the webpage to enable each webpage to correspond to one classification keyword frequency vector; and S4: establishing a statistical model, calculating the classification keyword frequency vector distance between each target webpage and the client webpage to obtain the correlation degree between each target webpage and the client webpage, and automatically classifying the target webpage on the basis of the correlation degree. The invention can automatically find the optimum webpage based on unbiased estimation and thereby a great amount of high-quality potential webpage can be recommended to clients for link exchange.

An approach for the treatment of surfaces in public places with ultraviolet light is disclosed. In one embodiment, a disinfection illuminator having ultraviolet radiation sources can irradiate a number of contact surfaces. A control unit can control the ultraviolet irradiation of the contact surfaces. The disinfection illuminator is suitable for a wide variety of devices that are used by the general public. Gas station pumps, door knobs, key pads, and bathrooms are illustrative of examples of some devices and places having commonly-used surfaces that can be treated by the disinfection illuminator.

The invention provides a word vector training method and device. The method comprises the following steps: an internet webpage is captured, and training language materials are acquired and stored in a corpus; each training language material in the corpus is subjected to word segmentation, and an orderly word set corresponding to each training language material is obtained; a word list is established according to pre-collected user query logs; the training language materials stored in the corpus are distributed to nodes of a distributed word vector learning model; the distributed word vector learning model is configured to perform periodic word vector training on each word in the word list, and the word vector corresponding to the word in the word list is obtained. According to the word vector training method and device, the word vectors obtained through training can be well applied to search business, and fast iterative high-quality word vector training can be realized.

A multifunction airborne radar device includes a plurality of transmit antenna modules and / or receive antenna modules that are fixed relative to the aircraft, placed substantially over the surface of the aircraft so as to form transmit and receive beams, enabling targets to be detected for implementing a sense-and-avoid function. The airborne radar device may also comprise processing means for tracking the detected targets and for generating information sent to an air traffic control centre and / or to a control device on board the aircraft. The processing device may also receive data relating to the aircraft, enabling the antenna beams to be adjusted and the tracking calculations to be refined.

The invention relates to the new features for the earlier applications of toilet system attached a multi-purpose hand held water sprayer affording personal and environmental hygiene. The sprayer that delivers tempered water includes the lock elements on the components to secure connection, various types of spray tip cap for the use of general and medical purposes, an injection apparatus to supply external fluid, a fortified flexible hose, a water hammer arrester or air chamber to reduce water pressure shock, a water heater, a valve to control water flow, a mixing valve, check valves for the mixing valve to stop in reverse flow, a water pressure regulator with a pressure meter, a return line with a check valve for guarding against hot water spike, a thermometer at the outlet, a holder for placement of the sprayer, and various types of valves and sources for the hot and cold water supply. The new features also include the fortified flexible hose having the rollup attachment of middle layers over the flange for reinforcement.

The invention discloses a method and a device for preventing the unauthorized use of a fiscal card; after a user stamps a card on the card punching terminal of a financial system, the value of the distance between an intelligent mobile terminal device of the fiscal card owner and the current card punching terminal is obtained. The value of the distance can be determined through the positioning information about the intelligent mobile terminal device and information about the position of the current card punching terminal provided by a bank. The obtained distance value is then compared with a predefined distance value; if the value of the distance between the intelligent mobile terminal device and the current card punching terminal is smaller than the predefined distance value, then the financial system automatically performs a remit account, and the consumption transaction is succeeded; if the value of the distance between the intelligent mobile terminal device and the current card punching terminal is larger than the predefined distance value, then the issuing bank takes further measures after taking the advice from the fiscal card owner. The scheme of the invention further enhances the safety of using the fiscal card.

The invention provides a method and device for recognizing malicious users, and belongs to the field of network technology. The method includes the steps that historical behavior characteristics of a user to be recognized are acquired; a user classification model is acquired, wherein the user classification model is generated through classifier model training based on historical behavior characteristics of malicious users and historical behavior characteristics of normal users; the historical behavior characteristics of the user to be recognized are input into the user classification model to determine whether the user to be recognized is a malicious user or not. Through the user classification model obtained through classifier model training, the behavior characteristics of malicious users can be automatically analyzed according to the characteristics of a machine learning algorithm; compared with the prior art, the method and device have the advantages that the recognition process is independent of the subjective cognition of the human, and the coverage scope of behavior characteristics is wider, so that misjudgment and missed judgment are effectively reduced, and the accuracy of recognizing malicious users is improved.

The invention relates to a text classification method of a Chinese web page based on steam clustering, belonging to the technical field of internetwork data mining. The text classification method comprises the following steps of: acquiring a web page in real time; removing unprocessed labels in the format of the web page, and analyzing the characteristic information of texts of the web page; segmenting the content of the texts, using as ngram participles, and forming a plurality of word strings; computing the weight value of each word string; extracting the word string with a high weight value, and using the word string with the high weight value and the corresponding weight value thereof as characteristic vectors; computing the similarity of the characteristic vectors and characteristic information and a known class; computing obtained total similarity, and classifying the texts to the know class or establishing a new class; judging whether the know class is divided into two subclasses or not according to the number of characteristic items of the known class; and storing processed text records and the information of the known class. The text classification method sufficiently excavates the effective information of web page texts aiming at the characteristics of the web page texts and is incremental, fast, effective and more practical.