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| Number | Title | Issue Date |
| 5293318 | Navigation system A navigation system on an automobile has a GPS receiver for producing first positional data indicating the automobile position based on radio waves from GPS satellites, and a self-operating sensor for producing second positional data indicating the automo... | 03/08/1994 |
| 5283575 | System and method for locating a travelling vehicle A vehicle navigation system helps locate the vehicle on a road network by overcoming, through the use of fuzzy logic, the errors of positioning sensors and routing computers. In the system, sensors continually feed position coordinates to a processing uni... | 02/01/1994 |
| 5278763 | Navigation aids An electronic cursor (12) is movable over a digitising table (10) on which a chart (16) has been spread. The cursor can give an indication of which way it should be moved to reach a defined position on the chart. The cursor can also convert positions in t... | 01/11/1994 |
| 5268844 | Electronic digital position and navigational plotter An electronic digital plotter for navigators which relieves the rigors of mechanical manual plotting of position on a chart. The plotter utilizes either a flexible or rigid board employing electromagnetic or capacitive resistance technology. It makes use ... | 12/07/1993 |
| 5265470 | Tunnel effect measuring systems and particle detectors Methods and apparatus for measuring gravitational and inertial forces, magnetic fields, or wave or radiant energy acting on an object or fluid in space provide an electric tunneling current through a gap between an electrode and that object or fluid in sp... | 11/30/1993 |
| 5266948 | Apparatus and method for displaying a travel position Disclosed is an apparatus for displaying a travel position, which, in carrying out steps of calculating X- and Y-coordinates of a current position of the moving body; renewably presents said current position on a road map indicated on a display screen; ma... | 11/30/1993 |
| 5265024 | Pilots automated weather support system A system and process for providing systematic, updated, weather information from the ground to the pilot of an aircraft are disclosed. A ground station receives and assimilates weather data for satellite broadcast as digital weather data that is received ... | 11/23/1993 |
| 5252912 | System for warning aircraft pilot of potential impact with a power line and generating time-to-time impact signal A detector for use on board an aircraft traveling along a path of movement to detect a power line comprises an antenna for sensing the electric field associated with the power line and producing an electric field signal, and a signal processor for receivi... | 10/12/1993 |
| 5247831 | Method and system for monitoring the tire footprints of a motor vehicle, particularly for automatically optimizing the behavior of the motor vehicle A method for controlling the movement of a motor vehicle provided with tires which cooperate with the ground to define respective footprints includes monitoring the behavior of the footprints and generating at least one respective footprint signal indicat... | 09/28/1993 |
| 5235330 | Digital rebalance loop A digital rebalance system for an inertial reference sensor. The rebalance system associates the error signal output with a sample value of a stored error signal and generates a rebalancing torquing pattern waveform in response to the error signal. The sy... | 08/10/1993 |
| 5229947 | Highway information system A data processing device for providing data related to the categories of services available at locations along a highway in response to operator input is disclosed. The device includes a memory, a keyboard for entering input data identifying a desired ser... | 07/20/1993 |
| 5218355 | Apparatus for projecting artificial horizon viewable by peripheral vision Apparatus for projecting an elongated light bar representing an artificial horizon on an interior surface of an aircraft cockpit in front of a pilot of the aircraft with respect to a reference datum line on the interior surface of the cockpit. A vertical ... | 06/08/1993 |
| 5212643 | Vehicle-mounted navigation apparatus A vehicle-mounted navigation apparatus includes a display control unit which reads road map data from a map data storage device used for storing a plurality of road map data concerning road maps with different reduced scales in accordance with a current p... | 05/18/1993 |
| 5209682 | Speed and direction indicator for ships A speed and direction indicator for ships having at least one rudder propeller, or pump jet, and preferably several such devices for determining the direction of the ship and its speed in the selected direction. An optical display is provided in the area ... | 05/11/1993 |
| 5209111 | Method of measuring cross-flow vortices by use of an array of hot-film sensors The invention is a method for measuring the wavelength of cross-flow vortices of air flow having streamlines of flow traveling across a swept airfoil. The method comprises providing a plurality of hot-film sensors. Each hot-film sensor provides a signal w... | 05/11/1993 |
| 5205169 | Angle of attack sensor using inverted ratio of pressure differentials An angle of attack sensor is provided with ports for sensing flow angles in desired planes based upon differential pressure at the ports when a longitudinal or reference axis of the sensor changes relative to the flow stream. Impact pressure is also measu... | 04/27/1993 |
| 5191792 | Instrument for indicating altitude or direction A hand-held instrument adapted selectively to provide a sportsman, such as a mountain climber, with readily-readable indications of the existing altitude or direction. The instrument includes a magnetometer which yields an analog signal as a function of d... | 03/09/1993 |
| 5191791 | Piezoelectric sensor The change in capacitance of a sensor is linearly proportional to ice thickness provided that the ice thickness is significantly less than the distance between the conductive electrodes. By employing sensors with different electrodes, the sensitivity to i... | 03/09/1993 |
| 5187667 | Tactical route planning method for use in simulated tactical engagements A method that may be implemented in software, that selects tactically sound paths for vehicles from an initial position to a goal position across a piece of terrain. The method searches through possible paths before selecting a desired path. It calculates... | 02/16/1993 |
| 5179519 | Navigation system for vehicle A navigation system for a vehicle which does not bewilder a driver of the vehicle with heading indication also when the driving speed of the vehicle is low. The navigation system comprises a GPS receiver, a display unit, a map memory in which a map is sto... | 01/12/1993 |
| 5175540 | Variometer system for soaring flight Apparatus for use in a glider for indicating the rate of vertical air mass movement. The apparatus includes sensing means for detecting both glider airspeed and acceleration orthogonal to the plane of the wings. This information is used to modify the outp... | 12/29/1992 |
| 5170165 | Apparatus for displaying travel path Disclosed is a travel path displaying apparatus for indicating the current position of an automobile running on a selected road in a road map appearing on an associated screen. A cumulation of errors in estimating sequential current positions will cause a... | 12/08/1992 |
| 5157614 | On-board navigation system capable of switching from music storage medium to map storage medium An on-board navigation apparatus which uses a driver having a changer function to selectively reproduce any of music- and map-containing storage media. When it becomes necessary to read map data during reproduction of a music-containing medium, the curren... | 10/20/1992 |
| 5136881 | Measurement of waves in flows across a surface A method and apparatus for sensing wave flow across a surface wherein at least two pressure levels are sensed and combined to provide a representation of waves within the flow. In the preferred embodiment holes bored through the aircraft surface at an int... | 08/11/1992 |
| 5134883 | Pendulum-type accelerometer A pendulum-type accelerometer for use on trucks, cranes, airplanes, and boats as a multipurpose sensor. A cylinder with a damping fluid includes four equally spaced coils in a base of the cylinder and a pendulum suspended from a top of the cylinder which ... | 08/04/1992 |
| 5134394 | Light aircraft navigation apparatus A gyroscopically stabilized artificial horizon instrument used in light aircraft mounts an earth magnetic field sensitive flux sensor on its gyroscope housing to produce a signal indicative of the direction of flight. The signal is processed and produced ... | 07/28/1992 |
| 5130709 | Navigation apparatus for vehicle A navigation apparatus for a vehicle according to the present invention is designed to compare the distance from the previous intersection or feature to a further feature with the value from an odometer (2) and then to forcibly zero the remaining distance... | 07/14/1992 |
| 5117689 | Microwave temperature profiler for clear air turbulence prediction A method for determining Richardson Number, Ri, or its reciprocal, RRi, for clear air turbulence prediction using measured potential temperature profiles and determining the vertical gradient of potential temperature, dθ/dz. Wind vector from the aircraft... | 06/02/1992 |
| 5115238 | Calibration apparatus of angular velocity sensor in self-contained navigational system A calibration apparatus of an angular-velocity detection sensor for detecting a heading of a vehicle which is used in a self-contained navigational system, comprising an angular-velocity detection unit for calculating an angular velocity from an output si... | 05/19/1992 |
| 5107433 | Method of inputting starting and destination points into navigation systems A method inputting starting and destination points into an electronic navigation system for motor vehicles in which relevant data of street system maps comprising a street identification character and reference point coordinates with assigned house number... | 04/21/1992 |
| 5103400 | Destination guidance method of vehicle navigating A navigating apparatus which outputs information for guidance to a destination comprises an input device (1) for inputting a destination and a present position, a memory (4) in which guidance information is stored, an arithmetic unit (2) for determining o... | 04/07/1992 |
| 5095746 | Aircraft banking angle indicator An aircraft banking angle indicator which includes a banking angle sensing arrangement for generating an actual banking angle signal, a maximum banking angle input device for manually entering a selected maximum banking angle, a signal processing arrangem... | 03/17/1992 |
| 5094104 | Rate of turn indicator Rate of turn indicator for a nautical vessel, aircraft and the like indicating the rate of turn or swing in units such as degrees per unit of time from a particular course of travel. The indicator includes a magnetic gyro wheel including a flexible hub ro... | 03/10/1992 |
| 5092169 | Aircraft safety measurement system The present invention features a technique and system for achieving sufficiently stable, thick liquid films on an aircraft surface during a rain storm in flight, wherein such stable and thick films can be measured to determine liquid water content (LWC) i... | 03/03/1992 |
| 5084822 | Navigation apparatus for moving object A navigation apparatus in which the scale of a displayed map is automatically adjusted in dependence on parameter such as the distance between the moving object and a preselected destination.... | 01/28/1992 |
| 5067081 | Portable electronic navigation aid A portable electronic navigation apparatus and method utilizes universal latitude and longitude coordinates of geographic points and landmarks for determining current location or a specific destination and the distance and bearing thereof relative to land... | 11/19/1991 |
| 5067083 | Vehicle driving azimuth detecting apparatus for correcting a disturbed geomagnetic azimuth In an apparatus for detecting a driving azimuth of a vehicle, a gyroscopic sensor signal and a geomagnetic sensor signal are acquired. When the vehicle is driven in a disturbed geomagnetic area such as a straight road, the acquired geomagnetic sensor sign... | 11/19/1991 |
| 5067084 | Inertial measurement unit with aiding from roll isolated gyro In the present invention the inertial measurement unit system comprises a basic strapdown inertial measurement unit and an isolated fourth gyro strapped to a rotatable platform which is commanded to rotate at a rate equal to the spin rate of the vehicle b... | 11/19/1991 |
| 5047946 | Aircraft navigational system and method for guiding an aircraft along intersecting airways An aircraft navigational system which provides flight data information for an aircraft to travel along a first airway to a point of intersection with a second airway and then along said second airway. The system determines whether the point of intersectio... | 09/10/1991 |
| 5043902 | Vehicular navigation apparatus A vehicular navigation apparatus includes a distance sensor (1), a steering angle sensor (3), a curve detecting unit (9) provided with inputs of a distance signal and steering-angle signal for calculating a change in vehicle travelling direction by referr... | 08/27/1991 |
