Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7724191 | Apparatus and method for tracing position and direction of target object through RF signal An apparatus for tracing position and direction of a target object through an RF signal includes two loop antennas and a position and direction determination part. The two loop antennas receive the RF signal transmitted from the target object and are perpendicularly... | 05/25/2010 |
| 7373271 | System and method for measuring position and orientation using distortion-compensated magnetic fields An electromagnetic tracking system (600) and a distortion compensation method (500) that utilize a lead-lag network model to compensate for position and orientation distortion caused by eddy currents formed in one or more conductive distorters (330,... | 05/13/2008 |
| 7359718 | Location determination and location tracking in wireless networks The present invention is directed to systems and methods which monitor a network environment, collect client information available online, and refine location determinations of individual clients based on observed information as well as online information. More part... | 04/15/2008 |
| 7343195 | Method and apparatus for real time quantitative three-dimensional image reconstruction of a moving organ and intra-body navigation Medical imaging and navigation system including a processor, a medical positioning system (MPS), a two-dimensional imaging system and an inspected organ monitor interface, the MPS including an imaging MPS sensor, the two-dimensional imaging system including an image... | 03/11/2008 |
| 7314448 | Imaging transducer assembly An improved medical imaging device assembly includes an imaging transducer coupled to the distal end of a drive shaft, and a conductive wire is wrapped around a distal portion of the drive shaft, wherein the conductive wire reinforces the imaging device assembly. In... | 01/01/2008 |
| 7292948 | Magnetic position and orientation measurement system with eddy current distortion compensation Techniques for removing distortion in an AC magnetic tracker identify a characteristic frequency in the distortion environment which is then utilized to extract distortion components from the tracker receiver signals so that the corrected position and orientation ca... | 11/06/2007 |
| 7194297 | Impedance-matching apparatus and construction for intravascular device Intravascular device for matching impedances of portions of an intravascular circuit and limiting RF signal-induced heating of intravascular conductors. An intravascular device includes alternating conductive and dielectric layers and an electrically conductive coil... | 03/20/2007 |
| 7193561 | Phase controlled antennae for data transmission between mobile devices In a phase-controlled antenna array for mobile devices, in particular designed for flying device, groups of controllable passive antenna elements are arranged in concentric circles around an active central antenna element. The arrangement of additional similar plana... | 03/20/2007 |
| 7170489 | Positioning a cursor on the display screen of a computer A computer system comprises a keyboard (11), a display screen (13), a first pair of position-sensing electrodes (18.1, 18.2), a second pair of position-sensing electrodes (20.1, 20.2), a signal injection electrode (22), and an osci... | 01/30/2007 |
| 7135978 | Miniature resonating marker assembly A miniature resonating marker assembly that includes, in one embodiment, a ferromagnetic core, a wire coil disposed around the core, and a capacitor connected to the wire coil adjacent to the magnetic core. The core, coil, and capacitor form a signal element that, w... | 11/14/2006 |
| 7133714 | Magnetic resonance imaging probes A magnetic resonance probe may include a plurality of center conductors, at least some center conductors including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core, a first dielectric layer disposed a... | 11/07/2006 |
| 7096148 | Magnetic tracking system The present invention provides an electromagnetic tracking system that includes a field generator and a field sensor arranged to generate and detect, respectively, an electromagnetic field. Both the transmitter and receiver coils are connected to signal conditioning... | 08/22/2006 |
| 7085400 | System and method for image based sensor calibration Apparatus and methods are disclosed for the calibration of a tracked imaging probe for use in image-guided surgical systems. The invention uses actual image data collected from an easily constructed calibration jig to provide data for the calibration algorithm. The ... | 08/01/2006 |
| 7081748 | Magnetic resonance scanner with electromagnetic position and orientation tracking device A system for combining electromagnetic position and orientation tracking with magnetic resonance scanner is provided. One embodiment includes a magnetic resonance scanner defining a reference coordinate system for scanning a target. Coupled to the magnetic resonance... | 07/25/2006 |
| 7064750 | Device and system for locating the position of the tip of a pen on a digitising board The present invention relates to a device intended for locating the tip of a pen on a writing board, the pen and the board being part of a writing digitizing system further comprising at least two magnetic dipoles, each being coupled with a current source so as to c... | 06/20/2006 |
| 7057520 | Mobile transponder for a motor vehicle A mobile transponder for vehicles with an optical indicator providing information concerning the direction from the transponder to a vehicle. A plurality of antennas provide three-dimensional directional characteristics in order to recognize the signal from the vehi... | 06/06/2006 |
| 6980921 | Magnetic tracking system The present invention provides an electromagnetic tracking system that includes a field generator and a field sensor arranged to generate and detect, respectively, an electromagnetic field. Both the transmitter and receiver coils are connected to signal conditioning... | 12/27/2005 |
| 6968846 | Method and apparatus for refinably accurate localization of devices and instruments in scattering environments A method of localizing a device, medical or otherwise, within a three dimensional environment, the method comprising: (a) transmitting time varying magnetic fields from at least three transmitters, (b) receiving the transmitted electromagnetic radiation as induced v... | 11/29/2005 |
| 6968298 | System for automatically configuring arrangements of components and automatically generating production documents A system for automatically defining the spatial arrangement of structural components and optimizing the functional positions and/or quantities thereof is useful for design and production of an aircraft cabin. The basic aircraft type is input into a configuration too... | 11/22/2005 |
| 6952201 | Three-dimensional information detecting device, three-dimensional information detecting sensor device, and three-dimensional information indicating device A three-dimensional information sensor device is disclosed in which sensor coils thereof are sequentially selected by a control section. Signals are communicated between indicating coils of a three-dimensional information indicating device and sensor coils by electr... | 10/04/2005 |
| 6934629 | Method and apparatus for precise positioning of large structures A three dimensional structure is precisely positioned at a desired location. A viral model of the structure of interest is created and stored in a computer memory. Some time later, remote sensors are placed in selected positions on the structure of interest. The sen... | 08/23/2005 |
| 6927742 | Electromagnetic-induction system with optimum antenna layout and the method for forming the same This invention utilizes the design rule with minimum path to design the antenna layout so as to reduce the across-line effect, and it also makes changes in antenna address to design the optimum antenna layout. Furthermore, the single connector is also substituted fo... | 08/09/2005 |
| 6928383 | Three-dimensional information detecting system, three-dimensional information detecting device and input device for three-dimensional information detecting system A motion capture system includes a motion capture detecting device with sensor coils that are sequentially selected by a control section. Signals are communicated between respective input coils of input elements of an input device and the sensor coils by electromagn... | 08/09/2005 |
| 6920943 | Mapping tool for tracking and/or guiding an underground boring tool A portable mapping tool for use in a horizontal drilling system and associated methods use a boring tool configured for transmitting a locating signal. The mapping tool also includes at least one electromagnetic field detector which is configured for measuring the l... | 07/26/2005 |
| 6914427 | Eddy current probe having sensing elements defined by first and second elongated coils and an associated inspection method An eddy current probe and associated method of inspecting a structure are provided that are capable of generating a two-dimensional image of the structure, generally in real time. The eddy current probe includes an eddy current probe array having a plurality of firs... | 07/05/2005 |
| 6904307 | Magnetic resonance probes A magnetic resonance probe may include a plurality of center conductors, at least some center conductors including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core, a first dielectric layer disposed a... | 06/07/2005 |
| 6882953 | Stylus with position signal transmission A three-dimensional modeling system. The modeling system includes an antenna and a stylus. The stylus has at least one tag that communicates with the antenna to provide position signals of the tag, allowing the stylus to trace the surface of an object into a process... | 04/19/2005 |
| 6850738 | Method and antenna arrangement for coupling external antennas to a communication unit An arrangement for coupling external antennas (14, 15) to a communication unit (20) comprises, for example, a first filter (25) located in the unit, which filter combines at least signals of a first frequency range and signals of at least a seco... | 02/01/2005 |
| 6833814 | Intrabody navigation system for medical applications A system and method for tracking the position and orientation of a probe such as a catheter whose transverse inner dimension may be at most about two millimeters. Three planar antennas that at least partly overlap are used to transmit electromagnetic radiation simul... | 12/21/2004 |
| 6768457 | Diversity systems for receiving digital terrestrial and/or satellite radio signals for motor vehicles The invention relates to a diversity reception system for motor vehicles for digitally modulated terrestrial and/or satellite radio signals in a frequency range above 1 GHz. The system includes an antenna arrangement which supplies the reception signal to a radio re... | 07/27/2004 |
| 6720921 | Position location and tracking method and system employing low frequency radio signal processing A position location system adapted for Military Operations in Urbanized Terrain (MOUT) training exercises that equips a player with a magnetic sensor for detecting a low frequency (LF) magnetic field from a plurality of stationary antennas. The distance between the ... | 04/13/2004 |
| 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 |
| 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 |
| 6593884 | Intrabody navigation system for medical applications A system and method for tracking the position and orientation of a probe. Three at least partly overlapping planar antennas are used to transmit electromagnetic radiation simultaneously, with the radiation transmitted by each antenna having its own spectr... | 07/15/2003 |
| 6519550 | Object scanner A three-dimensional modeling system. The modeling system includes an antenna and a stylus. The stylus has at least one tag that communicates with the antenna to provide position signals of the tag, allowing the stylus to trace the surface of an object int... | 02/11/2003 |
| 6188355 | Wireless six-degree-of-freedom locator A method for determining the position and orientation of an object with respect to a reference frame, made up of providing the object with three independent transmitters of electromagnetic radiation, providing three independent receivers of the electromag... | 02/13/2001 |
| 6147480 | Detection of metal disturbance A method for tracking an object using energy fields, in the presence of interference due to introduction of an article responsive to the fields, in the vicinity of the object. One or more desired energy fields are produced in the vicinity of the object, a... | 11/14/2000 |
| 6075498 | Surface wave directional detection system and method A surface wave directional detection system for determining the direction in which an electromagnetic wave propagating along a metallic surface is travelling includes a first loop probe and a second loop probe positioned in close proximity to the metallic... | 06/13/2000 |
| 6035951 | System for tracking and/or guiding an underground boring tool Systems and associated methods for tracking and/or guiding an underground boring tool are disclosed. Each system or arrangement uses one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring... | 03/14/2000 |
| 5796366 | Method of and apparatus for position location and tracking of a vehicle or the like by the reception at the vehicle of pulsed radio navigation signals as of the Loran-OC type and the like, with an autonomous loop antenna-receiver This disclosure deals with processing radio-frequency navigation signals, particularly Loran-C signals, from crossed loop antennas (H-field antennas) by shifting the signal phase from two loops to be in quadrature with respect to each other and adding the... | 08/18/1998 |
