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| Number | Title | Issue Date |
| 7916084 | Emergency beacon An emergency beacon includes a housing fitted with a connector for connecting the beacon to an antenna that is external to the housing. Inside the housing, the beacon includes an incident sensor, a transmitter, a detection and control member connected to the sensor ... | 03/29/2011 |
| 7893873 | Methods and systems for providing enhanced position location in wireless communications Embodiments disclosed herein relate to methods and systems for providing improved position-location (e.g., time-of-arrival) measurement and enhanced position location in wireless communication systems. In an embodiment, an access point may replace information (e.g.,... | 02/22/2011 |
| 7817090 | Apparatus for transmitting positioning signal, positioning system including the apparatus, and system for transmitting positioning signal An apparatus that can transmit a signal enabling higher accuracy of calculating positional information is provided. A transmitting apparatus transmitting a positioning signal includes an oven controller crystal oscillator (OCXO) having a thermostatic oven that keeps... | 10/19/2010 |
| 7605757 | Multiple signal receiver The present invention is an apparatus and method for simultaneously processing multiple communication and navigation signals. An apparatus of the present invention may comprise a single receiver with a direct radio frequency (RF) sampling front end, a single analog ... | 10/20/2009 |
| 7605756 | System a method and an apparatus for performing wireless measurements, positioning and surface mapping by means of a portable coordinate system The present invention is a new multifunctional low-cost solution for performing measurements and positioning in construction sites and automatically extracting a three-dimensional virtual model, plans, elevations and sections drawings based on these measurements. Th... | 10/20/2009 |
| 7356618 | Method and system for synchronizing platform clocks in a distributed wireless platform According to one embodiment of the present invention, a novel method and system are disclosed. In one embodiment, a first node records a first node local time of receiving a wirelessly transmitted packet, the first node local time recorded with a monotonically incre... | 04/08/2008 |
| 7319387 | GPS interface for locating device A system for locating a position marker includes a locating device for locating the position marker, and a GPS device communicatively coupled to the locating device that provides GPS coordinate data when the position marker is located by the locating device. Electro... | 01/15/2008 |
| 7304609 | Hybrid wireless ranging system and associated methods A wireless ranging system includes a first wireless unit and a second wireless unit spaced therefrom. The first wireless unit may include a time-of-arrival (TOA) wireless transmitter, and a near-field electromagnetic (NFE) wireless transmitter having a settable oper... | 12/04/2007 |
| 7300367 | System for tracking wild game An assembly for tracking an animal which has been shot by an arrow. A shank portion of an arrow is received in a bushing which in turn receives a housing for a transmitter. The housing is retained on the bushing during arrow flight by an elastomeric ring. Upon impac... | 11/27/2007 |
| 7282991 | On-chip amplifier/line driver compensation circuit An embodiment of the present invention includes an amplifier on an integrated circuit, with the amplifier having positive and negative inputs, and positive and negative outputs. A first feedback capacitor is on the integrated circuit between the positive input and t... | 10/16/2007 |
| 7259640 | Miniature RF and microwave components and methods for fabricating such components RF and microwave radiation directing or controlling components are provided that may be monolithic, that may be formed from a plurality of electrodeposition operations and/or from a plurality of deposited layers of material, that may include switches, inductors, ant... | 08/21/2007 |
| 7258836 | Freeze resistant buoy system A freeze resistant buoy system includes a tail-tube buoy having a thermally insulated section disposed predominantly above a waterline, and a thermo-siphon disposed predominantly below the waterline. ... | 08/21/2007 |
| 7206675 | Runway approach using localizer alone This invention provides an improvement in the present instrument approach procedure used at airports having an ILS localizer without an accompanying UHF glide-slope. The field strength of the localizer, as measured at the airplane, is used as a basis for producing a... | 04/17/2007 |
| 7167106 | Methods and systems utilizing a programmable sign display located in proximity to a traffic light Methods and systems use a programmable sign display located in proximity to a traffic light to provide information to motorists upon the motorists directing their attention toward the traffic light. The programmable sign display may receive programming for content t... | 01/23/2007 |
| 7162395 | Cospas-sarsat beacon tester in a removable expansion card for a handheld computing device A remote tester for a radio frequency beacon includes a plug-in module insertable into a cooperating slot in a handheld computing device so as to communicate data between the module and the computing device, wherein the module includes an antenna, at least one radio... | 01/09/2007 |
| 7139820 | Methods and apparatus for obtaining location information in relation to a target device Mechanisms and techniques provide a system for obtaining and providing location information related to a target device. The system transmits a location request message onto a network towards a target device. Each node in a network, possible including the target devi... | 11/21/2006 |
| 7136011 | System for avoidance of collision between an aircraft and an obstacle A field unit for warning of a danger of collision between an aircraft and an obstacle, in particular a topographical ground obstacle or an obstacle formed by a mast, building or aerial cable structure, comprises a multi-part tubular mast having devices for fixing a ... | 11/14/2006 |
| 7136024 | Slot antenna having high gain in zenith direction The present invention provides a slot antenna in which the radiation toward the zenith direction is not obstructed although it is arranged on an upper side of a ground conducting plate. The antenna device 11 operates as the slot antenna by providing a ... | 11/14/2006 |
| 7127460 | Accessing and updating a configuration database from distributed physical locations within a process control system A configuration database includes multiple databases distributed at a plurality of physical locations within a process control system. Each of the databases may store a subset of the configuration data and this subset of configuration data may be accessed by users a... | 10/24/2006 |
| 7076261 | Synchronization of optical signaling beacons An arbitrary number of signaling beacons are synchronized simultaneously and automatically by a received modulated control signal in accordance with an arbitrary communication protocol over a communication link which may be separate from or superimposed upon a perce... | 07/11/2006 |
| 7023382 | Positioning signal transmission apparatus A reception high-frequency unit receives a GPS signal transmitted from a satellite configuring GPS. A signal generation unit generates a plurality of pseudo random noise codes that are used for the positioning operation by a positioning apparatus for implementing a ... | 04/04/2006 |
| 7020450 | Active inductors using bipolar silicon transistors An active inductor includes bipolar transistors T1, T2, T3 and TD (TD being arranged in diode), where T1's emitter is connected to an output port and to T2's collector. T2's base is connected to a first voltage line and betw... | 03/28/2006 |
| 6992623 | 406 MHz emergency beacon with in-band homing transmitter A search and rescue beacon includes a main transmitter transmitting a Cospas-Sarsat signal at a main frequency and an auxiliary homing transmitter transmitting a homing signal at a homing frequency close to the main frequency. Advantageously both the Cospas-Sarsat s... | 01/31/2006 |
| 6942158 | Memory tag and a reader A memory tag comprising a resonant circuit part, a memory, a detector module and an output generator module, the resonant circuit part being operable to generate an output signal in response to a signal from a reader, the amplitude of the output signal dependent on ... | 09/13/2005 |
| 6833813 | Method, receiver and system for determining the time of reception of a beacon signal The invention relates to a method and to devices for determining in a positioning system the time of reception of a beacon signal which was received and tracked by a receiver. In order to enable a re-acquisition of the system time based on a noisy received signal, i... | 12/21/2004 |
| 6788252 | Communication system using non-directional short range radio communications between user terminal device and road related facility A communication system is formed by a location information providing unit configured to provide a location information indicating a location of each road related facility arranged along a road, and a communication unit installed on each road related facility, config... | 09/07/2004 |
| 6762720 | System and method of determining a temporal point of reference when receiving a radio signal A method and device for determining a temporal point of reference when receiving a radio signal, especially in a mobile radio system. The radio signal is received with a time-variant received strength in a temporally indeterminate manner. A received-strength determi... | 07/13/2004 |
| 6762716 | Digital beacon asymmetry and quantization compensation A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. The method comprises the steps of computing quantized channel weights {tilde over (W)}c from channel weights Wc for at least some of the channels; estimating t... | 07/13/2004 |
| 6693557 | Vehicular traffic sensor A vehicle traffic sensor for detecting and monitoring vehicular targets is presented. The sensor employs a planar design resulting in a reduced profile sensor. The sensor includes a multi-layer radio frequency board with RF components on one of the sides ... | 02/17/2004 |
| 6683567 | Single receiver wireless tracking system A wireless tracking system consists of a wireless target including a wireless communication system for transmitting a data packet over a communication path, and a locating station for determining a position of the target. The data packet transmitted from ... | 01/27/2004 |
| 6624785 | Receiver designed to pick up an electromagnetic signal and system using such a receiver A receiver designed to pick up an electromagnetic signal, comprises: a passive receiving antenna; a resonant circuit connected to the antenna, formed of passive components and replying, by transmitting an electric signal, to the electromagnetic signal pic... | 09/23/2003 |
| 6597313 | System for global automatic control of transportation means during normal and extreme situations The invention relates to control systems and is directed at defining the state of transportation means (TM) in normal and extreme conditions. Each TM is fitted with a power-on radio beacon station (RB) whose signals are retransmitted by means of geostatio... | 07/22/2003 |
| 6580978 | Path following using bounded beacon-aided inertial navigation A high-resolution path marking system utilized with inertial navigation systems for land vehicles. The system uses radio frequency tags or "beacons" to mark a route to be traversed by manned or unmanned follower vehicles. The RF tags serve as references t... | 06/17/2003 |
| 6563462 | Millimeter-wave camera for radiometric imaging and communications An imaging system (10) that includes a passive millimeter-wave camera (14)employing a focal plane array (60) of millimeter-wave integrated circuitry receivers (32). The camera (14) images a scene (58) that may include one or more beacons (12). The beacons... | 05/13/2003 |
| 6559935 | Sensors of relative position and orientation An optical position and orientation determining system determines yaw, pitch, roll, lateral translation and longitudinal translation of a body with respect to a direction and intensity sensing receiver. The system comprises two energy beam emitters, mecha... | 05/06/2003 |
| 6529164 | Object location monitoring within buildings An object location monitoring system tracks the locations of portable transceivers that attach to movable objects, such as patients within a hospital. The system preferably tracks the locations of the transceivers by combining a signal strength based loca... | 03/04/2003 |
| 6456240 | High-G, low energy beacon system A switch modulated low duty cycle low energy mass limited radio frequency beacon system for locating spent, un-exploded or experimental munitions projectiles in a large open-air test range or within a dirt backstop. The disclosed locator beacon is mounted... | 09/24/2002 |
| 6448926 | Multi-band, multi-function integrated transceiver A communications system operating in one or more frequency bands of various number of channels per band (for a total of N channels), and a novel transceiver for receiving these multiple bands of signals. The transceiver comprises an antenna and RF front e... | 09/10/2002 |
| 6346912 | Radio frequency beacon An improved RF beacon for use in space/earth communications and positioning determination provides better spectral purity and frequency stability. A power supply provides regulated voltage and control signals to the beacon. Each of two oscillators operate... | 02/12/2002 |
| 6275164 | Emergency locator system A low-cost emergency locator beacon (ELB) device that transmits an identifying serial number in addition to the beacon signal. This transmission includes an audio modulated Manchester encoded digital version of the serial number, and an analog, voice synt... | 08/14/2001 |
