With Telemetry Patents (Class 342/50)
  • Patent number: 10198045
    Abstract: A portable computing device may comprise a display, a frame, and a communication circuit. The frame may support the display. At least a portion of the frame may be electrically conductive, and the electrically conductive portion of the frame may define a slot. The communication circuit may be coupled to the slot. The communication circuit may be configured to generate a fringing field. The fringing field may include electromagnetic waves with a wavelength at least eight times a width of the slot in a widest direction of the slot.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 5, 2019
    Assignee: GOOGLE LLC
    Inventors: Xiangyu Kong, Doug Kough
  • Patent number: 9830552
    Abstract: A radio IC device includes an electromagnetic coupling module includes a radio IC chip arranged to process transmitted and received signals and a feed circuit board including an inductance element. The feed circuit board includes an external electrode electromagnetically coupled to the feed circuit, and the external electrode is electrically connected to a shielding case or a wiring cable. The shielding case or the wiring cable functions as a radiation plate. The radio IC chip is operated by a signal received by the shielding case or the wiring, and the answer signal from the radio IC chip is radiated from the shielding case or the wiring cable to the outside. A metal component functions as the radiation plate, and the metal component may be a ground electrode disposed on the printed wiring board.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: November 28, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Noboru Kato, Satoshi Ishino, Takeshi Kataya, Ikuhei Kimura, Nobuo Ikemoto, Yuya Dokai
  • Patent number: 9083448
    Abstract: An apparatus and method for wireless communications configured to receive simultaneous transmissions from a plurality of wireless devices, with each of the transmissions having a reference signal, acquire the reference signals and, based on information obtained from the acquisition of the reference signals, select the transmission from one of the wireless devices for timing synchronization and decoding.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Zhanfeng Jia, David Jonathan Julian, Amal Ekbal
  • Patent number: 8754804
    Abstract: The present invention is a stackable telemetry circuit board for use in telemetry systems for satellites and other purposes. The present invention incorporates previously-qualified interchangeable circuit boards, or “decks,” that perform functions such as power, signal receiving and transmission, and processing. Each deck is adapted to serve a range of telemetry applications. This provides flexibility in the construction of the stackable telemetry circuit board and significantly reduces the cost and time necessary to develop a telemetry system.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: June 17, 2014
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William Herbert Sims, III, Kosta A. Varnavas
  • Patent number: 8682303
    Abstract: A digital processing device capable of receiving an additional service is disclosed. In one aspect, a digital processing device includes i) an input unit, inputting a signal, ii) a subscriber identity unit, storing an identity code of a communication operator and generating a communication network access request message, iii) an additional service identity unit, storing an identity code of an additional service operator and generating an additional service request message and v) a control unit, generating a control signal allowing one of the subscriber identity unit and the additional service identity unit to be selectively driven. In accordance with at least one inventive embodiment, a user of the digital processing device can receive an additional service without his or her subscription to a specific communication operator and use various additional services in addition to the additional services provided by the subscribed communication operator.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: March 25, 2014
    Assignee: KT Corporation
    Inventors: Young-Sung Kim, Tae-Hyo Ahn, Yeon-Dae Kim, Hae-Young Song, Won-Taik Hwang, Sang-Youn Lee, Yoon-Kyoo Jung, Sun-Jung Lee, Tae-Kyun Kim
  • Patent number: 8626132
    Abstract: A digital processing device capable of receiving an additional service is disclosed. In one aspect, a digital processing device includes i) an input unit, inputting a signal, ii) a subscriber identity unit, storing an identity code of a communication operator and generating a communication network access request message, iii) an additional service identity unit, storing an identity code of an additional service operator and generating an additional service request message and v) a control unit, generating a control signal allowing one of the subscriber identity unit and the additional service identity unit to be selectively driven. In accordance with at least one inventive embodiment, a user of the digital processing device can receive an additional service without his or her subscription to a specific communication operator and use various additional services in addition to the additional services provided by the subscribed communication operator.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 7, 2014
    Assignee: KT Corporation
    Inventors: Young-Sung Kim, Tae-Hyo Ahn, Yeon-Dae Kim, Hae-Young Song, Won-Taik Hwang, Sang-Youn Lee, Yoon-Kyoo Jung, Sun-Jung Lee, Tae-Kyun Kim
  • Patent number: 8477061
    Abstract: A method and system that prevents engagement with neutral aircraft utilizes secondary surveillance radar (SSR) in conjunction with traffic alert collision avoidance systems (TCAS) conventionally found on various commercial aircraft. The system and method provide for detecting interrogating signals sent out by a TCAS system of an interrogating aircraft searching for another aircraft that may pose a threat for collision. The system and method of the invention provide for a base system generating signals responsive to the interrogation signals such that there is a decreasing time difference between the interrogating signals and the responsive signals. The decreasing time difference indicates to the interrogating aircraft that another aircraft is approaching its airspace urging the neutral aircraft to change course and avoid entering a guarded tactical airspace thus avoiding unnecessary engagement of the aircraft.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: July 2, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Richard N. Pedersen
  • Patent number: 8378843
    Abstract: A telematics system in an asset network is provided. The telematics system includes one or more sensors configured to acquire data from multiple assets at different locations in the asset network. The telematics system also includes a transceiver configured to receive the data acquired from the one or more sensors. The telematics system further includes a data analysis system. The data analysis system includes a central data server configured to receive the data transmitted from the transceiver. The data analysis system also includes a processing circuitry configured to combine data, analyze combined data to detect trends, generate value added services based on the detected trends and distribute the value added services to multiple end users.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: February 19, 2013
    Assignee: General Electric Company
    Inventors: Patricia Denise Mackenzie, John William Carbone, Charles Burton Theurer, Joseph James Salvo, Joseph Edward Jesson
  • Patent number: 8346437
    Abstract: When a lane-width-direction lateral position (X2obst+X0) of a vehicle (MM) reaches a predetermined control start position (60) being a lane-width-direction lateral position (X2obst+X0) serving as an approach prevention indicator for the vehicle (MM), a control start is determined and a yaw moment (Ms) toward the center of a vehicle traveling lane (200) is applied to the vehicle (MM) to control the vehicle (MM). Then, when the lane-width-direction lateral position (X2obst+X0) of the vehicle (MM) moves from the outside to the inside of the control start position (60), the determination of control start is suppressed for a predetermined period, compared to a period before the movement to the inside of the control start position (60).
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: January 1, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuhisa Hayakawa, Kou Sato, Masahiro Kobayashi
  • Patent number: 8018340
    Abstract: A system is provided, which may alternatively be implemented as a method. According to one embodiment, the system comprises an article to be tracked; a flexible radio frequency identification (RFID) device coupled to the article, the RFID device comprising a first thin flexible sheet having a first surface, a dipole antenna disposed on the first sheet, and a single integrated circuit (IC) having stored therein an identification code associated with the article. The system further comprises an article tracking system configured to receive the identification code from an interrogation system, wherein the interrogation system includes a first interrogator located at a point of origin of the article, a second interrogator located at a point of destination of the article, and a third interrogator located on a route between the point of origin and the point of destination, and wherein the first, second, and third interrogators are configured to communicate with the RFID device to determine the identification code.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: September 13, 2011
    Assignee: Round Rock Research, LLC
    Inventor: John R. Tuttle
  • Patent number: 8001901
    Abstract: A system and method of detecting, processing, and selectively responding to radio frequency transmissions detected by at least one projectile deployed above a geographic area.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: August 23, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Jamie Bass
  • Patent number: 7969348
    Abstract: A wide area location and telemetry system may include a wide area location and telemetry system server that is configured to determine wide area location and telemetry system data about an object when the object is located within the coverage area of the wide area location and telemetry system. The wide area location and telemetry system server may also be configured to receive localized location and telemetry system data about the object when the object is located within the coverage area of a localized location and telemetry system. The wide area location and telemetry system may also include a database and a database manager. The database manager may be configured to store the wide area location and telemetry system data and the localized location and telemetry system data in the database.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: June 28, 2011
    Assignee: Recon Dynamics, LLC
    Inventors: James R. Baker, Sy Prestwich, Scott Bevan
  • Patent number: 7917088
    Abstract: RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more thresholds are used to digitize the received signal implemented by two or more demodulators. Multiple low pass and digital filters may be implemented with the demodulators, allowing removal of narrow pulses caused by the interference and reduction of beat tone amplitude.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: March 29, 2011
    Assignee: Impinj, Inc.
    Inventors: John D. Hyde, Kurt E. Sundstrom
  • Patent number: 7884753
    Abstract: A sensor includes a transceiver configured to receive a wireless signal from an interrogator and to reflect the wireless signal back. The sensor also includes an antenna-switching modulator configured to modulate a radar cross-section of the sensor by repeatedly switching an antenna between, for example, a short-circuit position and an operational circuit position. The operational circuit position could be associated with an impedance matched receiver, and the short-circuit position could be associated with ground. Also, the sensor could be further configured to transmit the wireless signal to a second sensor and to receive a reflected wireless signal from the second sensor, and the sensor could further include a phase comparator configured to compute a phase difference between the transmitted wireless signal and the reflected wireless signal. The phase comparator could be further configured to compute a distance between the sensor and the second sensor based on the phase difference.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: February 8, 2011
    Assignee: Honeywell International Inc.
    Inventors: Andy Peczalski, Fouad Nusseibeh
  • Patent number: 7876224
    Abstract: The invention generally relates to an airborne deployed passive radio frequency identification system and a method to identify an analyte and then to communicate a result of the analyte identification to a receiving station for an analysis and generation of a set of recommended actions. The invention will enhance the situational awareness and preparedness of forward deployed combat troops or security forces by assessing the presence of benign substances or hazardous substances as they advance and enter an area.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: January 25, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Nicholas Prokopuk
  • Patent number: 7826944
    Abstract: A remotely configurable telematics unit cache provides for selective caching of data of interest to a remote caller. The configurable caching system ensures that selected data is available when the vehicle is not in operation and the telematics unit is not powered on. A remote caller can remotely configure the telematics unit cache to selectively store data of interest. Subsequently, the telematics module can accept calls from the caller and the cached information can be pulled. Thus, the configurable cache allows a remote caller to selectively and positively configure the cache to store desired data to be later uploaded without requiring a call-back from the telematics unit and without limiting the cached data to predetermined data groups.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 2, 2010
    Assignee: General Motors LLC
    Inventors: Christopher L. Oesterling, Fahd Z. Laghrari, Carl J. Hering
  • Patent number: 7818127
    Abstract: A method and apparatus for at least semi-autonomously controlling a vehicle so as to avoid collisions are provided. A sensor is utilized to scan an area proximate the vehicle for a potential object of collision. The apparatus calculates navigational states of the potential object of collision relative to the vehicle to determine that the vehicle is on a course to enter within a predetermined miss distance relative to the potential object of collision. The apparatus alters the course of the vehicle based on the calculated navigational states.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 19, 2010
    Assignee: Geneva Aerospace, Inc.
    Inventors: David S. Duggan, David A. Felio, Craig S. Askew
  • Patent number: 7746230
    Abstract: The present invention teaches a method of manufacturing an enclosed transceiver, such as a radio frequency identification (“RFID”) tag. Structurally, in one embodiment, the tag comprises an integrated circuit (IC) chip, and an RF antenna mounted on a thin film substrate powered by a thin film battery. A variety of antenna geometries are compatible with the above tag construction. These include monopole antennas, dipole antennas, dual dipole antennas, a combination of dipole and loop antennas. Further, in another embodiment, the antennas are positioned either within the plane of the thin film battery or superjacent to the thin film battery.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: June 29, 2010
    Assignee: Round Rock Research, LLC
    Inventor: John R. Tuttle
  • Patent number: 7583192
    Abstract: The present invention teaches a method of manufacturing an enclosed transceiver, such as a radio frequency identification (“RFID”) tag. Structurally, in one embodiment, the tag comprises an integrated circuit (IC) chip, and an RF antenna mounted on a thin film substrate powered by a thin film battery. A variety of antenna geometries are compatible with the above tag construction. These include monopole antennas, dipole antennas, dual dipole antennas, a combination of dipole and loop antennas. Further, in another embodiment, the antennas are positioned either within the plane of the thin film battery or superjacent to the thin film battery.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: September 1, 2009
    Assignee: Keystone Technology Solutions, LLC
    Inventor: John R. Tuttle
  • Patent number: 7579989
    Abstract: Process and system for the location of emitters in the radar frequency range on the basis of cross position-finding by at least two flying platforms with, in each case, at least one passive HF sensor for ascertaining the geometrical and electronic properties of the emitter beams, whereby the flying platforms mutually exchange data for describing the geometrical and electronic properties of the emitter beams, and whereby from the plurality of the position-finding beams' possible intersection points, which arise from the emitter surveying operation, use is made, in order to determine the emitter position, of those intersection points at which the electronic properties of the intersecting emitter beams are identical.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 25, 2009
    Assignee: EADS Deutschland GmbH
    Inventors: Gerhard Winterling, Benjamin Benninghofen
  • Patent number: 7580361
    Abstract: In the present network system, a printer 10 periodically transmits an update request at different timings respectively to an apparatus management PC 30 and to a directory service 50 which are monitoring apparatuses for monitoring network apparatuses (such as the printer 10). Each of the monitoring apparatuses 30, 50 determines a state of the printer 10 based on the update request from the printer 10. Especially in the present system, if the apparatus management PC 30 determines that the update request from the printer 10 is not received, it notifies the directory service 50 by transmitting a delete request. As a result, early detection of disconnection of the printer 10 by the directory service 50 is possible without causing substantial increase in the network traffic.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: August 25, 2009
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kiyotaka Ohara
  • Patent number: 7573368
    Abstract: An electromagnetic transponder comprising: an oscillating circuit; a first rectifying bridge having its A.C. input terminals connected across the oscillating circuit and having its rectified output terminals connected at least to a voltage regulator in charge of providing a supply voltage; and a second rectifying bridge, of dimension smaller than that of the first bridge, having its two A.C. input terminals connected across the oscillating circuit and having at least one output terminal connected to a demodulator of data sensed by the oscillating circuit.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 11, 2009
    Assignee: STMicroelectronics SA
    Inventor: Jérôme Conraux
  • Patent number: 7504992
    Abstract: A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a host computer, which individually addresses each sensor to instruct that sensor to be in an interrogate mode or responder mode. When a sensor is in interrogate mode, it measures distance from a neighboring sensor using radar (continuous wave phase difference) measurements. When a sensor is in responder mode, it receives, delays, and returns a signal received from a neighboring sensor.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: March 17, 2009
    Assignee: Southwest Research Institute
    Inventors: Michael Eugene Pilcher, Jr., Brian Earl Campion, Ben Allen Abbott
  • Patent number: 7460059
    Abstract: Interfering clutter in radar pulses received by an airborne radar system from a radar transponder can be suppressed by developing a representation of the incoming echo-voltage time-series that permits the clutter associated with predetermined parts of the time-series to be estimated. These estimates can be used to estimate and suppress the clutter associated with other parts of the time-series.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: December 2, 2008
    Assignee: Sandia Corporation
    Inventors: Richard C. Ormesher, Robert M. Axline
  • Patent number: 7414517
    Abstract: A radio frequency identification transponder includes a power supply and a dynamic memory array that stores data. When power from the power supply ceases, the data in the dynamic memory array is validly maintained for a predetermined period of time. The dynamic memory array is responsive to an interrogating signal for selectively updating the data. A radio frequency identification transponder includes a signal processor that extracts an identifier from the interrogation signal and is responsive to the identifier and the stored data to determine whether some or all of the identifier is stored in the dynamic memory array.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: August 19, 2008
    Assignee: Magellan Technology Pty Limited
    Inventors: Stuart Colin Littlechild, Michael John Stanton
  • Patent number: 7369941
    Abstract: A collision detection system and method of estimating a crossing location are provided. The system includes a first sensor for sensing an object in a field of view and sensing a first range defined as the distance between the object and the first sensor. The system also includes a second sensor for sensing the object in the field of view and sensing a second range defined by the distance between the object and the second sensor. The system further includes a controller for processing the first and second range measurements and estimating a crossing location of the object as a function of the first and second range measurements. The crossing location is estimated using range and range rate in a W-plane in one embodiment and using a time domain approach in another embodiment.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 6, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Jan K. Schiffmann, Sandeep D. Punater
  • Patent number: 7292822
    Abstract: An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: November 6, 2007
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Patent number: 7224308
    Abstract: A surveillance system is provided for surveillance of objects within a secure area. A surveillance sensor transmits surveillance signals to all objects within the secure area, the reflections of which are received back by the surveillance sensor to determine the locations of objects, and communicates the determined locations to a pressing facility. Objects authorized to be in the secure area are equipped with an Identification Friend or Foe (IFF) unit that includes a GPS receiver and a data communication transmitter. In response to predetermined conditions, the IFF units broadcast their position and identification to the processing facility for correlation with locations defined by the reflection signals.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: May 29, 2007
    Inventors: Walker Butler, Charles Chase
  • Patent number: 7158031
    Abstract: A radio frequency indentification (RFID) label includes an integrated circuit and an antenna. The label may also include two flexible films directly sealed to each other. The label may be affixed to an article and used in conjunction with an interrogation system to track the article.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: January 2, 2007
    Assignee: Micron Technology, Inc.
    Inventor: John R. Tuttle
  • Patent number: 7075476
    Abstract: A network, sensor and method are provided that utilize the capabilities of impulse radio technology to help monitor and/or control the environment within a building. In particular, the network includes a sensor attached to a first impulse radio unit that is capable of transmitting an impulse radio signal containing sensor related information to a second impulse radio unit. The second impulse radio unit is attached to a control station that uses the sensor related information (e.g., environmental related information, safety related information or surveillance related information) to monitor and/or control the environment within a building. In one aspect of the present invention, the control system can better control and monitor the environment within the building because the sensor may be moved around within the building and reference impulse radio units may interact with the first impulse radio unit to enable the determination of the current position of the sensor.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: July 11, 2006
    Assignee: Time Domain Corp.
    Inventor: Jonnathan H. Kim
  • Patent number: 6946952
    Abstract: A data carrier (1) for contactless communication with the communication station comprises firstly a reception stage (3) for receiving an interrogation signal (IS), secondly a generation stage (17) for generating a response signal (RS) upon reception of the interrogation signal (IS), thirdly a processing circuit (18) for processing the response signal (RS) into a transmission signal (MCRS) suitable for transmission to the communication station, fourthly a determination device (22) for determinating at least one representative value (REP1, REP2), the representative value (REP1, REP2) representing the field strength of the field acting on the data carrier (1), and fifthly a control connection (25) between the determination device (22) and the processing circuit (18), wherein the processing circuit (18) is influenced via the control connection (25) in order to vary a transmission parameter of a transmission signal generated by the processing circuit (18) as a function of the at least one representative value (REP
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: September 20, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Josef Preishuber-Pfluegl, Franz Amtmann
  • Patent number: 6864829
    Abstract: The invention relates to a system for determining a position of a moving transponder adapted to receive a substantially stationary magnetic field signal and to transmit a further signal. The system comprises a signal generating arrangement adapted to generate said stationary magnetic field signal for said transponder, said transponder being adapted to determine a plurality of signal strengths of said received magnetic field signal; at least one signal receiving arrangement, adapted to receive said further signal of said transponder, said transponder being adapted to insert at least one message portion in said further signal indicative of at least one of said plurality of signal received signal strengths and processing means adapted to determine said position in accordance with a plurality of said received signal strengths determined by said moving transponder. This further signal can e.g.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: March 8, 2005
    Assignee: AMB IT Holding B.V.
    Inventors: Alfonsus Maria Bervoets, Fransciscus Robertus A. C. Hin
  • Publication number: 20040263381
    Abstract: A system for visually indicating receipt of a radio communication directed to a user having an associated unique identification code. The system includes a radio transponder having an audio output, means for obtaining and storing the unique identification code; a speech recognition circuit operably connected to the radio transponder audio output and the stored identification code; and a visual indicator operably connected to an output of the speech recognition circuit, such that when the stored identification code and said audio input are substantially the same the visual indicator is driven to activation. A method is similarly disclosed.
    Type: Application
    Filed: July 20, 2004
    Publication date: December 30, 2004
    Inventors: Robert P. Mitchell, Wayne C. Crouch, Martin J. Foley
  • Patent number: 6825794
    Abstract: SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: November 30, 2004
    Assignee: Research In Motion Limited
    Inventors: Peter J. Edmonson, Colin K. Campbell
  • Publication number: 20040222917
    Abstract: An identification interrogator is provided for surveillance of objects within an area. The identification interrogator transmits interrogation signals to all objects within the surveillance area, the reflections of which are received back by the interrogator to determine the locations of the objects, and communicates the determined locations to a processing facility to determine their authorized locations. Upon receipt of interrogation signals, some of the objects within the surveillance area broadcast their position and identification to processing facility for correlation with the locations determined by the reflection signals. The locations of other objects are found by correlating the location determined by the reflection signal with a predetermined list of objects and their location within the surveillance area. These may be objects with no means or method to transmit position and identification information, such as rock formations or buildings.
    Type: Application
    Filed: May 6, 2003
    Publication date: November 11, 2004
    Inventor: Walker Butler
  • Patent number: 6816106
    Abstract: An identification interrogator is provided for surveillance of objects within an area. The identification interrogator transmits interrogation signals to all objects within the surveillance area, the reflections of which are received back by the interrogator to determine the locations of the objects, and communicates the determined locations to a processing facility to determine their authorized locations. Upon receipt of interrogation signals, some of the objects within the surveillance area broadcast their position and identification to processing facility for correlation with the locations determined by the reflection signals. The locations of other objects are found by correlating the location determined by the reflection signal with a predetermined list of objects and their location within the surveillance area. These may be objects with no means or method to transmit position and identification information, such as rock formations or buildings.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: November 9, 2004
    Inventor: Walker Butler
  • Publication number: 20040160355
    Abstract: The invention relates to a system for determining a position of a moving transponder adapted to receive a substantially stationary magnetic field signal and to transmit a further signal. The system comprises a signal generating arrangement adapted to generate said stationary magnetic field signal for said transponder, said transponder being adapted to determine a plurality of signal strengths of said received magnetic field signal; at least one signal receiving arrangement, adapted to receive said further signal of said transponder, said transponder being adapted to insert at least one message portion in said further signal indicative of at least one of said plurality of signal received signal strengths and processing means adapted to determine said position in accordance with a plurality of said received signal strengths determined by said moving transponder. This further signal can e.g.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Inventors: Alfonsus Maria Bervoets, Fransciscus Robertus A.C. Hin
  • Patent number: 6774778
    Abstract: A tire pressure monitoring device, being installed in a motor vehicle having a plurality of tires, includes: a plurality of sensor modules being installed onto the tire and having a wireless communication signal transmitter for transmitting a radio frequency (RF) signal. The RF signal includes a specific code for the status of the tire and a specific code for the sensor module. The device further includes a plurality of antenna modules, each being installed individually for one of the sensor modules for receiving the signal; and a receiving device, electrically coupled to the antenna module for processing the signal.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 10, 2004
    Assignee: Lite-on Automotive Corporation
    Inventor: Sheng Hsiung Lin
  • Patent number: 6745008
    Abstract: A multi-frequency RFID remote communication system is provided that includes a plurality of RFID tags configured to receive a first signal and to return a second signal, the second signal having a first frequency component and a second frequency component, the second frequency component including data unique to each remote RFID tag. The system further includes a reader configured to transmit an interrogation signal and to receive remote signals from the tags. A first signal processor, preferably a mixer, removes an intermediate frequency component from the received signal, and a second processor, preferably a second mixer, analyzes the IF frequency component to output data that is unique to each remote tag.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 1, 2004
    Assignee: Battelle Memorial Institute K1-53
    Inventors: Curtis Lee Carrender, Ronald W. Gilbert
  • Patent number: 6728629
    Abstract: The on-road reference point positional data delivery device according to the present invention has a reference point positional data delivery device, and this reference point positional data delivery device has a beacon identification device for indicating a reference point position for service information delivered from a beacon provided on a road to a vehicle and also selecting the beacon delivering the service information from among a plurality of beacons.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: April 27, 2004
    Assignee: National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport
    Inventors: Kenichiro Oka, Hiroyoshi Suzuki
  • Patent number: 6717516
    Abstract: Devices having either wireless data communication capability or RFID tags can be located using dual function fixed devices which are distributed throughout a facility. The devices will identify those units with which they are communicating using a wireless radio data communications protocol and also identify items within the local area using RFID tags on the units.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: April 6, 2004
    Assignee: Symbol Technologies, Inc.
    Inventor: Raj Bridgelall
  • Patent number: 6693581
    Abstract: A device for data transmission in a motor vehicle and/or from a motor vehicle in its vicinity includes a first transceiver unit in or on the motor vehicle and a second transceiver unit. which is provided in at least one transponder unit whose spatial position relative to the vehicle may be variable or any desired position. In the first transceiver unit is a radar unit equipped for distance measurement, expanded by adding a two-channel data transmission system. The second transceiver unit is also a two-channel data transmission unit, and the microwave frequencies for two-channel communication of the data transmission system are selected so that their difference yields an intermediate frequency which is processable using conventional components in a heterodyne receiver in the reception part of each of the first and second transceiver units.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: February 17, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Frank Gottwald, Klaus Voigtlaender, Slava Tihovsky, Stefan Gaier, Elmar Giehler, Peter Crowhurst
  • Publication number: 20040027271
    Abstract: Disclosed herein is a critical band encoding technology (CBET) system having at least one portable people meter (PPM) and a home base station and/or household hub, the CBET system containing a radio frequency (RF) proximity detection and identification system, comprising at least one RF transmitter for receiving a control signal, modulating an RF signal to a present modulation frequency upon receipt of the control signal, and wireless transmitting the modulated signal; and an RF receiver for receiving the wirelessly transmitted modulated signal, determining the modulation frequency, and transmitting the modulation frequency to a remote location, wherein the transmission power of the RF transmitter is preset to transmit the modulated data within a predetermined range.
    Type: Application
    Filed: July 15, 2003
    Publication date: February 12, 2004
    Inventors: Paul R. Schuster, Douglas L. Lewis
  • Patent number: 6670909
    Abstract: A network, sensor and method are provided that utilize the capabilities of impulse radio technology to help monitor and/or control the environment within a building. In particular, the network includes a sensor attached to a first impulse radio unit that is capable of transmitting an impulse radio signal containing sensor related information to a second impulse radio unit. The second impulse radio unit is attached to a control station that uses the sensor related information (e.g., environmental related information, safety related information or surveillance related information) to monitor and/or control the environment within a building. In one aspect of the present invention, the control system can better control and monitor the environment within the building because the sensor may be moved around within the building and reference impulse radio units may interact with the first impulse radio unit to enable the determination of the current position of the sensor.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: December 30, 2003
    Assignee: Time Domain Corporation
    Inventor: Jonnathan H. Kim
  • Patent number: 6657578
    Abstract: A formation collision avoidance system includes a Traffic Alert and Collision Avoidance System (TCAS) having a passive mode and an active mode. The passive mode enables several members of an aircraft formation to fly without actively interrogating using TCAS while only one or few formation members are actively interrogating. Formation members in passive mode maintain awareness of current air and ground traffic conditions using networked surveillance information provided over a communications link between formation members in active mode and formation members in passive mode. The networked surveillance information includes positional and intent information of current air/ground traffic obtained from ADS-B broadcasts and replies to the actively interrogating members of the formation. The communications link utilizes Station Keeping Equipment (SKE) already existing on certain aircraft.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: December 2, 2003
    Assignee: Aviation Communication & Surveillance Systems, LLC
    Inventors: Greg T. Stayton, Kathryn W. Ybarra, James R. Troxel
  • Patent number: 6630900
    Abstract: The invention relates to a system suitable for a remote interrogation of passive transponders using chirp signals for interrogation. The transponder preferably has an encoding unit (11), a calibrating unit (12) and a measuring unit (13) each with a plurality of parallel channels (11.1 to 11.5, 12.1 and 13.1 to 13.2). The encoding unit and the calibrating unit are preferably jointly incorporated with a common delay line (14) on the same SAW chip. The interrogation signals received in the transponder via an antenna (10) are delayed characteristically and code-specifically, in particular in the encoding and calibrating unit. Decoding in the interrogation station is preformed by discrete Fourier transformation of the response signal and subsequent evaluation of the spectrum. To correct general disturbing influences on the delay of the response signal, said signal is calibrated using a single calibrating component in the response signal.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: October 7, 2003
    Assignee: Hera Rotterdam B.V.
    Inventors: Roland Stierlin, Roland Küng
  • Publication number: 20030174086
    Abstract: The present invention provides an apparatus, method, and system for determining a time of arrival (TOA) and time differences of arrival (TDOA) of a transmitted signal {S} receivable at different locations of known spatial coordinates. The system comprises a first transmitter 10 with a respective antenna feed point positioned at an a priori unknown location P and emitting a first signal {S}. The system includes furthermore a set of transceivers or transponder units 20, 30 comprising first receivers 22, 32 for receiving first signals {S} by means of respective antennas with feed points located at known locations Ln. Such system also comprises second transmitters 26, 36 emitting respective derived second signals {{tilde over (S)}n} after known and scheduled respective time intervals &dgr;n as measurable between the feed points of said respective first receiving antennas located at known locations Ln and respective second transmitting antenna located at locations L′n.
    Type: Application
    Filed: December 20, 2002
    Publication date: September 18, 2003
    Applicant: International Business Machines Corporation
    Inventor: Walter Hirt
  • Patent number: 6614385
    Abstract: A police activity transponder utilizes data available through a vehicle on-board diagnostic system or a intelligent vehicle data bus to adjust the sensitivity of the police activity transponder to law enforcement signals based on speed data. A police activity transponder is configured to read speed data available through an on-board diagnostic system or an intelligent vehicle data bus and using an internal clock, calculate a 0 to 60 mile per hour or a quarter mile time for display and function as a speedometer. A police activity transponder is configured to read engine revolutions per minute (rpm) data and function as a tachometer. A police activity transponder is configured to allow a user to input shift points, read engine rpm data, and provide a user indication.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: September 2, 2003
    Assignee: Escort Inc.
    Inventors: John Kuhn, Steven K. Orr
  • Publication number: 20030142004
    Abstract: A device for data transmission in a motor vehicle and/or from a motor vehicle in its vicinity has a first transceiver unit (1) in or on the motor vehicle and a second transceiver unit (2) which is provided in at least one transponder unit whose spatial position relative to the vehicle may be variable or any desired position; it is characterized in that the first transceiver unit (1) is a radar unit equipped for distance measurement, expanded by adding a two-channel data transmission system; the second transceiver unit (2) is also a two-channel data transmission unit, and the microwave frequencies (f1, f2) for two-channel communication of the data transmission system are selected so that their difference |f1-f2| yields an intermediate frequency (fIF) which is processable using conventional components in a heterodyne receiver in the reception part of each of the first and second transceiver units (1, 2).
    Type: Application
    Filed: December 13, 2002
    Publication date: July 31, 2003
    Inventors: Frank Gottwald, Klaus Voigtlaender, Slava Tihovsky, Stefan Gaier, Elmar Giehler, Peter Crowhurst
  • Publication number: 20030098809
    Abstract: A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 29, 2003
    Inventors: Erik D. Lindskog, Mitchell D. Trott, Adam B. Kerr