582 results about "Rf technology" patented technology

A method and system for a Radio Frequency (RF)-based identification, tracking and locating of objects. The method and system use a narrow bandwidth signal in VHF of lower frequency range, which minimizes propagation loss and loss of accuracy of the RF locating signals. The signal is sent from a Master Unit(s) to a Tag. The signal traveling time is recorded and the distance between the Master(s) and the Tag is calculated. The method and system allow achieving a longer distance of the RF signal penetration and an increased accuracy by using VHF bands. The techniques of Digital Signal Processing and Software-Defined Radio are used. The actual waveforms transmitted and received by the radios are defined by the software. The roles of the Master Unit(s) and the Tag can be reversed.

An interconnected wireless RF HVAC (heating, ventilation, air conditioning) system and wireless RF security system, which are interconnected and communicate with each other through the use of a common wireless RF technology, including the same selected frequency, modulation and a set of common protocols. The RF wireless HVAC system includes wireless RF thermostats which can communicate with and control both the HVAC system and the security system, and the wireless RF security system includes wireless RF controls or keypads which can communicate with and control both the security system and the HVAC system. The universal RF infrastructure can be expanded to provide communication or control of additional user or manufacturer installed wireless RF devices or systems through the universal RF home infrastructure.

A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.

A method and system for a long range Radio Frequency (RF)-based identification, tracking and locating of objects. The method and system use a narrow bandwidth ranging signal(s), including VHF of lower frequency bands, which minimizes propagation loss and loss of accuracy of the RF locating signals. The method and system includes narrow bandwidth ranging signal multi-path mitigations processor, which further improves the track-locate accuracy. The signal is sent from a Master Unit(s) to a Tag. The signal traveling time is recorded and the distance between the Master(s) and the Tag is calculated. The method and system allow achieving a longer distance of the RF narrow bandwidth ranging signal penetration and an increased accuracy by using VHF bands in conjunction with the narrow bandwidth ranging signal multi-path mitigations processor. The techniques of Digital Signal Processing and Software-Defined Radio are used. The actual waveforms transmitted and received by the radios are defined by the software. The roles of the Master Unit(s) and the Tag can be reversed.

The invention discloses an all-round intelligent guiding system and method for a large parking lot, and belongs to the field of intelligent traffic. The system disclosed by the invention comprises a guidance-initializing inlet unit, a guidance-stopping outlet unit, a guidance-path planning server, an anti-jamming coordinated controller, a guidance-indicting subsystem and a parking-space information-monitoring subsystem. Parking, vehicle taking-out and exit-guiding services are intelligently provided for a driver in the whole process from entering the parking lot to leaving the parking lot through the system by adopting a fork-passing triggering-type guidance-path updating and optimizing mechanism on the basis of a radio-frequency technology, a fork-passing triggering-type positioning mechanism and an anti-jamming path-planning mechanism, so that the parking lot is safer, more energy-saving and more highly-efficient in operation.

A MEMS based overhead garage door intrusion sensor for a security system, such as a residential/home security system, for detecting an intrusion through an overhead garage door. In one embodiment, a MEMS sensor accelerometer is mounted with a sensitive axis of the MEMS device, along which the MEMS device measures acceleration/gravity, pointing vertically downward towards the earth when the overhead garage door is closed, such that the MEMS sensor measures a 1 g acceleration/gravity force, and when the overhead garage door is open, the sensitive axis of the MEMS device points horizontally with respect to the earth, such that the MEMS sensor measures a 0 g acceleration/gravity force, such that the output of the MEMS sensor, indicating either a 1 g or a 0 g measured acceleration/gravity force, indicates whether the overhead garage door is respectively closed or open. Alternatively, the MEMS sensor can be a MEMS switch. An ASIC or microcontroller can monitor the output of the MEMS sensor, and one embodiment employs wireless RF technology.

A user captures a digital image of a paper where the user has marked one or several objects or commands with a pen. The marking is done according to a predefined set of marking rules, which eases the separation of objects and commands later on. Examples of rules for marking objects or commands are encircling, underlining and highlighting. The embedded commands in the digital image can be associated with one or several objects in the digital image. The association is done according to a predefined set of association rules. The image is then transmitted to a computing device for processing. The transmission is using a cable, IR or RF technologies like Bluetooth or cellular telephony. The computing device is called “command-server”. It identifies and separates objects and commands by analysing the digital image using the predefined set of marking rules. The command-server also identifies, interprets and associates commands with objects by analysing the digital image according to the predefined sets of marking rules and association rules. Finally the command-server initiate services related to the commands on the objects.

A bidirectional telephony (POTS or ISDN) system utilizes RF technology to move the signalling away from the baseband frequency. The method translates baseband telephony signalling into one or more RF signals over twisted pair copper channels, in conjunction with an ADSL or VDSL signal on the same medium.

A multizone RF read/write system for conducting transactions with vehicles traveling at high speeds. A first RF read zone is created, preferably by use of a first gantry that extends over at least one lane and contains at least one RF source that creates a large powerful RF read zone for reading or reading and writing to a transponder on a passing vehicle. Additional RF read zones arranged in tandem with the first RF read zone are created by at least one additional RF source that is located on an additional gantry extending over at least one lane, or located on the first gantry. Accordingly, multiple RF read zones are created to conduct transactions with passing vehicles. In one aspect, the multiple RF read zones can be used to ensure that tolling transactions with a single vehicle are more likely to be completed and have a higher degree of accuracy. In another aspect, the multiple RF read zones each employ a different RF technology so that multiple types of RF toll tags can be read and written.

The invention discloses an intelligent video monitor system combined with radio frequency technique and a method thereof. The system is composed by a data collection unit, a storage unit, a control unit and an application unit. The method comprises the steps of: mounting the data collection unit on a monitor scene as required by the monitor scene, enabling a monitored object to carry an electronic label including an exclusive identification coding, recording in the storage unit the distribution situation of the electronic labels, probability grammar describing motion rules of the object on the monitor scene and a variety of other information on the scene, ceaselessly capturing information of videos and electronic labels by the data collection unit, and transmitting the information upwards and continuously to the application unit via a network to realize the monitor to the monitored object. The invention effectively shortens the time as required by retrieving a video stream comprising particular objects and integrates merit about the radio frequency identification to batch-identify the objects at high speed, thereby the invention is convenient to track and monitor the monitored objects on condition of high density and improve system intelligence, as well as suitable for online application, expedient intelligent monitor system.

A communication system reduces set up time for an inter-technology handoff of a multi-mode mobile station (MS) from a source network associated with a first radio frequency (RF) technology to a target network associated with a second RF technology by pre-establishing, prior to a determination to handoff the MS, a registration state of the MS and an authentication of the MS in association with the target network and second RF technology. In order to pre-establish the registration state and authentication, the MS exchanges messaging of the second RF technology with the second network via the first network and first RF technology. To facilitate the exchange, the MS includes shims in a second protocol stack associated with the second technology, which shims intercept second protocol stack signaling and redirect the intercepted signaling to a first protocol stack of the MS, associated with the first technology, for tunneling to the source network.

A method for carrying out false proof on article with certificate based on radio frequency technique includes using authorized writer/reader to make scan for obtaining article electronic code and certificate electronic cipher key, sending obtained data to article false proof databank, carrying out verification on received data by said databank and returning article false proof information back to said writer/reader after verification is passed then utilizing said writer/reader to display article basic information returned from said databank. The system used for realizing said method is also disclosed.

The invention discloses an intelligent management system for a tool based on a radio frequency technology. The intelligent management system comprises a hardware part and a system software part, wherein the hardware part comprises an RFID (Radio Frequency Identification Device) electronic tag, a fixed reader-writer, a handheld reader-writer, an application server, a WEB server and a database server; the RFID electronic tag carries out information exchange with the fixed reader-writer and the handheld reader-writer through radio frequency; information of the fixed reader-writer and information of the handheld reader-writer are transmitted to the application server, the WEB server is connected to the database server through a backbone network, and the application server is connected to the WEB server and the database server through network equipment. According to the intelligent management system, intelligent management of each link of the tool, such as warehouse in and out, maintenance, test and abandonment, can be normalized, the speed and the accuracy for data input of each link of warehouse management are guaranteed, the whole informatization management of the life cycle of the tool is implemented, the use safety of the tool is guaranteed, and the load of a worker is reduced.

Described are RF tracking system and method. The RF system may include a shell for holding a plurality of containers which store a material that interferes with RF communications. The shell includes a bottom container supporting surface and a plurality of leg extensions attached thereto; the shell extends away from the bottom surface. The tracking system also includes at least one RF tag attached to a first one of the leg extensions. The tag has a memory arrangement storing data relating to at least one of an identity of the shell, an identity of the containers held in the shell and a material stored in the containers. Furthermore, the tracking system includes at least one RF scanner communicating with the tag to collect the data and a computing arrangement which includes a database and communicating with the scanner to update the database as a function of the collected data. The tag is situated at a predetermined distance away from the containers held in the shell to overcome an electromagnetic dampening effect of the material.

Secure transaction card for execution of transactions by an authorized user. The secure transaction card has a biometric sensor, a battery, data transmission means, a microprocessor, a data storage device, and a security circuit. The microprocessor compares the scanned biometric feature with biometric data stored on the card. Upon determination of a match, the microprocessor energizes the security circuit, which then allows transmission of data to an external card reader. Data transmission is via a magnetic strip or RF technology. Upon determination of a mismatch, the security circuit remains de-energized and data transmission from or to an external reader is blocked.

The invention provides a high-accuracy train positioning system based on the radio frequency technology and a positioning method thereof. The high-accuracy train positioning system comprises a radio frequency card arranged on a trackside fixed object and a reader and a processing computer which are arranged on a rail train, wherein the radio frequency card responds to a transmitting signal sent by the reader and returns a reflected signal; the reader receives and processes the reflected signal returned by the radio frequency card to acquire the card number of the radio frequency card and sends the card number to the processing computer; and the processing computer invokes the database of the radio frequency card to identify the positioning information corresponding to the card number of the radio frequency card. The train positioning system and the positioning method carry forward various advantages of the radio frequency technology, overcome the defects of the prior art and can operate accurately and effectively in severe environment. In addition, the invention also provides an error correction scheme for the positioning system, which further increases the detection accuracy of the train positioning system and meets the high requirements of current rail transit development for the detection system.

Methods for determining a LOB of one or more user equipment (UE) in a wireless system employing Time Difference of Arrival (TDOA) is described. TDOA techniques are based on estimating the difference in the arrival times of reference signals from multiple receivers or from multiple emitters to a receiver. A particular value of the time difference estimate defines a hyperbola between the two receivers on which the handset may exist. When the distance between the receiving antennas is small relative to the distance of the emitter source (the handset) being located, then the TDOA is equivalent to the angle between the baseline of the sensors (receivers antennas) and the incident RF energy from the emitter. If the angle between the baseline and true North is known, then the line of bearing (LOB) and/ or angle of arrival (AoA), can be utilized to determine the location of the UE.

An integrated input device communicates with a host computer system in accordance with the low-speed Universal Serial Bus (USB) Specification. The keyboard includes a function controller for providing output signals to a host computer or an upstream hub using a single USB low-speed cable and a USB type A connector. Signals generated by a pointing device are coupled to the appropriate pins of the function controller. The pointing device may be hard-wired to the function controller. Alternatively, the signals generated by the pointing device may be coupled to the function controller using a wireless technique, such as a radio frequency technique or an infrared technique.

Disclosed is a production management system and production management method based on an RFID technology. The production management system comprises a system central server which provides Web services and database services, a production management terminal provided with an RFID card issuing device, a set of terminal computers and an RFID radio frequency card, wherein the terminal computers are arranged according to a working process and provided with RFID card readers, the production management terminal is connected with the system central server through a network, and the system central server is connected with the terminal computers through a switchboard. With the aid of an RFID wireless radio frequency technology, a network communication technology, computer software and other technologies, the production management system and production management method based on the RFID technology achieves a function of effective management for discrete production, managers achieve informatization management of a unique number to each product, card reading operation of operators can timely and accurately record production states of products and greatly improves efficiency for statistics of workloads, support is provided for fine and high-efficiency management operation of an enterprise, and the production management system and production management method based on the RFID technology has good social benefits and economic benefits.

A system and method for detecting the proximity of a bus or other transportation. Each bus is equipped with a transmitter, typically radio-frequency (RF), that broadcasts as the bus travels. As the bus and transmitter come within range of corresponding receivers, the receivers will detect the transmitter and will indicate that the bus is approaching. The receivers can be placed at the bus stop, and can also be carried by passengers so that they can be notified of the approaching bus before actually having to go to the bus stop. In various embodiments, the transmitters are implemented using radio-frequency identification (RFID) tags, Bluetooth, and other known RF technologies. Preferably, the transmitters will transmit an identifier that indicates the bus route or specific bus, and the receivers are programmed to only indicate the presence of selected buses.