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| Number | Title | Issue Date |
| 7561969 | Navtex receiver Upon receiving a NAVTEX broadcast signal, a NAVTEX receiver reconstructs text data, detects a special character string including numerals followed by “N” or “S” and numerals followed by “E” or “W” in this order contained in latitude/longitude informa... | 07/14/2009 |
| 7437242 | Navigation apparatus A navigation apparatus mounted on a vehicle is equipped with a first gyro sensor and a second gyro sensor arranged in symmetry with respect to a first axis in a travel direction of the vehicle and to a second axis that passes through the center of gravity of the veh... | 10/14/2008 |
| 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 |
| 7359038 | Passive determination of ground target location Ground targets can be passively identified on uneven terrain from an observation point elevation above a known reference point, a line-of-sight inclination angle, an azimuth angle and a digital terrain elevation database wherein actual elevations of surrounding lati... | 04/15/2008 |
| 7286955 | Ship proximity measurement display system including the remotely viewable billboard and bridge display with data communication and attachment framing This invention allows personnel located on two different structures, such as two ships, to continually monitor the separation distance between the two structures, with all of the necessary equipment being located on only one of the structures. This is accomplished u... | 10/23/2007 |
| 7221909 | Method for guiding wireless communication device into communicable range and wireless communication device A personal digital assistant (PDA) detects its position by a two-axis acceleration sensor provided therein. While the PDA is within a communicable range where the PDA can communicate with the printer, a position of the PDA, which is located at time when the position... | 05/22/2007 |
| 7218994 | Robot A robot for freely moving about in an environment where there is an obstacle. The robot includes a communication section transmitting by wireless an image taken by a camera to a base station, and via the base station to a communication terminal making a radio commun... | 05/15/2007 |
| 7171364 | Voice assistant apparatus inputting a key In a key-input voice assistant apparatus of the present invention, a mode switching key is used to switch the operation mode between a normal mode in which a function assigned to a key is executed when key input is detected and a voice guide mode in which a voice is... | 01/30/2007 |
| 7152015 | Terminal with position-measuring functions A terminal with position-measuring functions is provided which is capable of improving position-measuring accuracy. The terminal with position-measuring functions includes a position-measuring section, a statistical processing section, and a position-information app... | 12/19/2006 |
| 7142981 | Laser range finder closed-loop pointing technology of relative navigation, attitude determination, pointing and tracking for spacecraft rendezvous A closed-loop LRF pointing technology to measure the range of a target satellite from a chaser satellite for rendezvous is provided that includes: LOS angle measurements of the target, a relative navigation Kalman filter, attitude determination of the visible sensor... | 11/28/2006 |
| 7123749 | Height measurement apparatus Apparatus and methods for enhancing the accuracy of height above ground measurements in which the registration error between successive images taken of the terrain over which an aircraft is flying is minimized, the earlier image having first been transformed accordi... | 10/17/2006 |
| 7103426 | Anticipatory high frequency noise compensation in a distributed process control system A control system includes a measurement device capable of gathering high frequency process parameter data, a modeling routine which uses the high frequency parameter data to develop a model of the high frequency noise and a compensation routine that employs the deve... | 09/05/2006 |
| 7102563 | Methods and apparatuses of estimating the position of a mobile user in a system of satellite differential navigation Disclosed are methods and apparatuses for estimating the floating ambiguities associated with the measurement of the carrier signals of a plurality of global positioning satellites, such that the floating ambiguities are preferably consist for a plurality of differe... | 09/05/2006 |
| 7068815 | Method and apparatus for ground detection and removal in vision systems A vision system that forms a map of a scene proximate a platform, e.g., a vehicle, that determines the actual ground plane form the map, and that corrects the map for differences between the actual ground plane and an assumed ground plane. The vision system may remo... | 06/27/2006 |
| 7050926 | Method of surveying a track In a method of surveying a track (9), a first or mobile measuring vehicle (1) and a second or stationary measuring vehicle (2) are placed at a distance apart from one another on a track section to be measured. A reference line (14) is for... | 05/23/2006 |
| 7002510 | Method and apparatus for air-to-air aircraft ranging A method and apparatus is disclosed for determining the range between two planes, ownship (10) and target (12). Model data (66) estimating the velocity and position of target (12) is compared to actual flight path data of the target (1... | 02/21/2006 |
| 6950731 | Traffic pattern approach computer A mechanical computer used in tandem with a GPS to approach, enter and fly the traffic pattern of any uncontrolled airport. Pilots must navigate to a relatively small area or approach point before entering the traffic pattern of an uncontrolled airport. While airpor... | 09/27/2005 |
| 6922635 | Method and system for determining absolute positions of mobile communications devices using remotely generated positioning information Absolute positions of global position system (“GPS”) enabled mobile communications devices, which form a wirelessly networked group of GPS mobiles, can be determined at each of the mobiles based on use of wireless communications capabilities of the mobiles for o... | 07/26/2005 |
| 6889002 | Recording medium on which navigation information is recorded and information reproducing apparatus therefor A recording medium and an information reproducing apparatus capable of quickly reading navigation information are offered. The recording medium has a plurality of recording layers, on each of which navigation information is recorded. Navigation information having a ... | 05/03/2005 |
| 6882930 | Method and system for providing traffic and related information The invention provides a system for providing traffic or related information including: a database storing historical traffic data being operable to receive substantially real time traffic data and associated data; means for integrating historical, real time and ass... | 04/19/2005 |
| 6859691 | Device and method for enabling a mariner to select storm havens A microprocessor controlled device and method utilizing an information database concerning harbor attributes and a collection of harbor maps and images, together with algorithms that determine which harbors are appropriate for shelter against certain weather conditi... | 02/22/2005 |
| 6564146 | Tracking system for providing position information Processing GPS signals received at moving targets and at a fixed location near instrumentation associated with timing and recording an event allows the determination of instantaneous target position to be made without a requirement for additional active t... | 05/13/2003 |
| 6516252 | Method for acquiring satellite A method for acquiring a satellite using satellite prediction values has a behavior analysis step for analyzing a behavior unique to a satellite orbit, a search range calculation step for calculating a search range based on the analysis, and a search step... | 02/04/2003 |
| 6327534 | Unambiguous position determination using two low-earth orbit satellites A system and method for unambiguously determining the position of a user terminal (for example, a mobile wireless telephone) in a low-Earth orbit satellite communications system. The system includes a user terminal, at least two satellites with known posi... | 12/04/2001 |
| 6205400 | Vehicle positioning and data integrating method and system thereof A vehicle positioning and data integrating process and system can substantially solve the problems encountered in avionics system integration, which employs integrated global positioning system/inertial measurement unit enhanced with altitude measurements... | 03/20/2001 |
| 6181995 | Vehicle state mileage determination system A system and method for monitoring and recording the number of miles that a vehicle has traveled within each of a set of geographic entities. A vehicle position determination system is installed on-board the vehicle for generating a present vehicle locati... | 01/30/2001 |
| 6119067 | Object detecting system for conveyance, etc. An object detecting system mounted on a conveyance such as a vehicle having a laser radar as an object detector mounted on the vehicle at a position offset from the vehicle longitudinal center line, for adjusting in a factory the radar mounting position i... | 09/12/2000 |
| 5978735 | Satellite navigation method A satellite navigation method for a mobile station which is installed, in particular, in a traffic route-guided vehicle. Several reference marks are installed along the traffic route at predetermined distances from one another, with the geographic positio... | 11/02/1999 |
| 5961570 | Display unit for vehicle A car navigation system 11 has a screen change section 19d for changing one screen to a different screen based on a predetermined input signal, a display signal generation section 19c for generating a video signal for displaying the different screen, a li... | 10/05/1999 |
| 5954773 | Vehicle state mileage determination system A system and method for monitoring and recording the number of miles that a vehicle has traveled within each of a set of geographic entities. Current vehicle location data points are compared to entity boundary line approximations to determine which of a ... | 09/21/1999 |
| 5894343 | Passive rangefinder A passive rangefinder for determining the range to an object such as an aircraft, rocket or missile which emits electromagnetic radiation makes use of spectral measurements over a broad band of frequencies. The rangefinder includes means 202 for forming a... | 04/13/1999 |
| 5870179 | Apparatus and method for estimating range Range or distance to points is estimated within a scene, while simultaneously imaging the scene. The range to various points within the scene is estimated by imaging at least a first color of light from the scene through an optical mask and a lens onto a ... | 02/09/1999 |
| 5867256 | Passive range estimation using image size measurements A range estimation system and method which comprises a data base containing data for identification of certain targets and data for estimating the initial range to each of the targets as a function of the observed dimensions of the targets. A sensor (1) o... | 02/02/1999 |
| 5737731 | Method for rapid determination of an assigned region associated with a location on the earth A global communication system must comply with service restrictions when operating across political and other restrictive boundaries. The location of a subscriber unit must be correlated to a service area region for identifying and extending appropriate r... | 04/07/1998 |
| 5719774 | System and method for relating disparate data models of physical objects A method for deriving a two-dimensional first-range data model at a distance, d, from a two-dimensional second-range data model at a distance, d0. The method (10) comprises the steps of first smoothing the second-range data model, I, by masking... | 02/17/1998 |
| 5661650 | System for controlling a vehicle relative to a judged shape of a travel road A vehicle position is determined and four reference coordinate points N1, N2, N3 and N4 are extracted at predetermined distances on a road output from a CD-ROM or an IC card, and an angle θ of turning of the ve... | 08/26/1997 |
| 5640323 | System and method for operating an autonomous navigation system A system (400) for positioning and navigating an autonomous vehicle (310) allows the vehicle (310) to travel between locations. Position information (432) is derived from global positioning system satellites (200, 202, 204, and 206) or other sources (624)... | 06/17/1997 |
| 5640325 | Sensor array dynamic position and orientation determination system A system, which uses inertial measurement units, is shown for determining the position and orientation of a towed array of sensors used for target detection. The system uses an onboard master inertial navigation system and a relative position determinatio... | 06/17/1997 |
| 5636123 | Traffic alert and collision avoidance coding system A system for coding and transmitting traffic alert and collision avoidance data between vehicles (A, B and C) traveling within a given airspace (12). The airspace is divided into a grid of volume elements (14a, 14b . . . 14i), each of which is assigned a ... | 06/03/1997 |
| 5631658 | Method and apparatus for operating geography-altering machinery relative to a work site A method and apparatus for operating geography-altering machinery such as a track-type tractor, road grader, paver or the like relative to a work site to alter the geography of the site toward a desired condition. A first digital three-dimensional model o... | 05/20/1997 |