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| Number | Title | Issue Date |
| 7428450 | Method and system for using a database and GPS position data to generate bearing data A method and system for providing a bearing from a vehicle to a transmitting station are described. The method includes accessing a database to obtain transmitter position information for the transmitter, obtaining vehicle position information based on a GPS signal,... | 09/23/2008 |
| 7359812 | Automation device The invention relates to an automation device (100, 100′), in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (110), which is ass... | 04/15/2008 |
| 7337063 | Method and system for using database and GPS data to linearize VOR and ILS navigation data A method and system for determining a deviation of a vehicle from a desired course are described. The method includes receiving bearing signals from a transmitter, accessing a database, on the vehicle, to obtain transmitter position information identifying a positio... | 02/26/2008 |
| 7312751 | Phased array antenna system to achieve suppression of undesired signal components Various techniques are disclosed to suppress undesired signal components introduced by non-linear amplifiers of phased array antenna systems to accommodate bandwidths greater than one octave. For example, in accordance with one embodiment, a phased array antenna sys... | 12/25/2007 |
| 7110899 | Phase measurement in measuring device Methods and apparatus for determining the phase of a signal in a measurement device having a digital signal processor are described. The signal is digitised and the digitised signal, or a signal derived therefrom, is numerically correlated with a numerically generat... | 09/19/2006 |
| 7033172 | Dental positioning grid In a digital camera having a rectangular electronic display for framing pictures, a dental positioning grid comprising: a line pattern superimposed on the rectangular electronic display, the line pattern including a horizontally centered horizontal line extending su... | 04/25/2006 |
| 6927550 | Device and method used to automatically compensate for synchronous disturbance To eliminate unwanted vibrations caused by synchronous disturbances, such as synchronous disturbances caused by an imbalance, for example, the invention proposes a compensation device for closed loop compensation of a synchronous disturbance in a rotating machine co... | 08/09/2005 |
| 6614396 | Method and device to correct a variation in bearing measurement A method to correct the drift in the phase shift between first and second signals, the first and second signals generated by a signal having frequency Fe, the drift in the phase shift resulting from a drift in the frequency Fe, according to a given relati... | 09/02/2003 |
| 6571171 | Method and apparatus for graphically inserting waypoints for a flight management system An apparatus and method for inserting a waypoint into a preexisting flight plan which includes selecting a waypoint on a graphical display of a portion of the flight plan and automatically generating a proposed changed flight plan based upon inserting the... | 05/27/2003 |
| 6437739 | Methods and systems for monitoring multiple channels in a very high frequency omni-directional range receiver The present invention relates to methods and systems for time-multiplexing a single VOR receiver to determine bearings from two or more VOR stations and thus determine a relative position of an object such as an aircraft. The invention employs a software-... | 08/20/2002 |
| 6405107 | Virtual instrument pilot: an improved method and system for navigation and control of fixed wing aircraft A self contained electronic system for manual or automatic control and navigation of fixed winged aircraft using electronic position sensing such as GPS, DGPS, WAAS, and the like, as the primary sensor and making use of known flight characteristics of the... | 06/11/2002 |
| 5801659 | Apparatus and method for coupling satellite navigation signals to a VOR system A navigation and control apparatus having a link to a GPS device for receiving positional and navigational data therefrom, a converter to convert the GPS signals into a VOR format, and a VOR signal generator to transmit the converted signals to a VOR rece... | 09/01/1998 |
| 5610600 | Operation verification system and method for navigational instruments An instrument verification system which causes the instrument needles to "bob" periodically--a sharp momentary deflection from center. If desired, the flags can also be "dipped" at the same time, verifying their operation as well. The pilot can easily dis... | 03/11/1997 |
| 5572427 | Doppler position bearing angle locator A Doppler position locator for determining the bearing of a signal source from a moving receiver. The signal source encodes a digital signal indicating its actual transmitting frequency on a transmitted carrier. The moving receiver such as an airplane rec... | 11/05/1996 |
| 5305010 | Crystal oscillator synchronized digital very high frequency omni-range (VOR) instrumentation unit A very high frequency omni-range (VOR) receiver for use in aircraft radio-navigation, which provides an indication of course deviation that is substantially immune to effects such as reflections in transmitted VOR signals, transients occurring in an aircr... | 04/19/1994 |
| 5185609 | Signal monitor utilizing digital signal processing A VOR monitor employs a microprocessor-based system in which, after initial analog detection of a transmitted VOR signal, the critical parameters of the signal are extracted by digital signal processing to ensure that the transmitted signal in space remai... | 02/09/1993 |
| 4728957 | Digital frequency discriminator, for extracting a sinusoidal signal A digital frequency discriminator designed to extract from a carrier at frequency fo a low frequency sinusoidal signal modulating the carrier. It receives digital samples xn from the carrier modulated at the frequency fe =... | 03/01/1988 |
| 4692869 | Aircraft navigational systems and methods for creating navigational guidepoints Aircraft navigational system and methods are disclosed for creating aircraft navigational guidepoints during in-flight operations. A digital computer and computer control displays provide dynamic and static display of the aircraft relative to the flight p... | 09/08/1987 |
| 4675614 | Phase difference measurement system A system and technique is disclosed which enables the production of in-phase and quadrature phase signals useful for deriving phase difference measurements. In an in-phase and quadrature phase difference measurement system, the phase shifter employed must... | 06/23/1987 |
| 4674051 | Navigation point locating system A system for determining the closest navigation point to an aircraft utilizes a sphere of influence principle wherein the earth is subdivided into a plurality of geographic areas, for example, one quarter degree squares of latitude and longitude. An ident... | 06/16/1987 |
| 4654811 | Adaptive filter for aircraft navigation receiver A low-pass filter for digital bearing data from an aircraft navigation receiver in which the filter time constant is set to a high value when the receiver bearing data exhibits characteristics of a noisy signal received from a distant station where the be... | 03/31/1987 |
| 4604625 | Phase-locked digital very high frequency omni-range (VOR) receiver A very high frequency omni-range (VOR) receiver for use in aircraft radio-navigation, which provides an indication of course deviation that is substantially immune to effects such as reflections in transmitted VOR signals, transients occurring in an aircr... | 08/05/1986 |
| 4577194 | Area navigational system Apparatus for air navigation to a point of known location which is separated from a VOR beacon of known location. The apparatus comprises storage means for storing signals representative of, respectively, the known locations of said point and said VOR, an... | 03/18/1986 |
| 4567486 | Phase difference measurement technique for VOR A system and technique is disclosed which enables the derivation of phase difference measurements in a VOR system. In the phase difference measurement system, a reference VOR signal and a variable VOR signal are received and multiplied by locally generate... | 01/28/1986 |
| 4447814 | Digital VOR bearing measurement apparatus A VOR bearing measurement scheme wherein the received 30 hertz reference signal is delayed a fixed time to produce an approximately 90 degree phase shifted reference signal. The reference is multiplied by the phase shifted, itself and the variable signals... | 05/08/1984 |
| 4212067 | Navigating device A keyboard entry VOR receiver incorporating a phase locked loop frequency synthesizer under processor control is disclosed. In one version a scanning VOR navigation receiver with a multitude of VOR displays operating from that one receiver and under the c... | 07/08/1980 |
| 4104637 | VOR phase monitoring system A VOR monitoring system responds to the phase difference between two signals to determine the bearing of an aircraft with reference to a transmitting station. Even harmonic distortion interference in the monitored signals produces a bearing error and when... | 08/01/1978 |
| 4086593 | AM removal and phaselock receiver An amplitude modulation (AM) removal circuit comprising a phaselock loop. A phaselock VOR receiver includes said AM removal circuit.... | 04/25/1978 |
| 4074267 | Device for numerically displaying VOR bearing A digital numeric VHF omnidirectional range (VOR) bearing indicator for piding a stable digital readout of VOR bearing in the presence of noise and fading signals. The device utilizes a count averaging scheme for calculating VOR bearing over a plurality ... | 02/14/1978 |
| 4061297 | Approach range monitor An area navigation system capable of operating during an ILS approach to provide the pilot range and bearing with respect to the outer and middle markers for a front course approach, and with respect to the final approach fix and the end of the runway for... | 12/06/1977 |
| 4041493 | Elimination of extraneous modulation from VHF omnirange receiver A VHF omnirange receiver subject to extraneous amplitude modulation of the carrier close to the frequency of a variable phase VOR modulation signal with a subcarrier frequency modulated by a fixed phase signal at the frequency of the variable phase signal... | 08/09/1977 |
| 4035803 | Circuit arrangement for determining the distance to a VOR transmitter station A circuit arrangement for determining the distance of an aircraft from a VOR transmitter is connected with a VOR receiver which determines angular information of the VOR transmitter perpendicular to the radial position line with an accuracy of deg... | 07/12/1977 |
| 4025923 | Synchronous filter for VOR systems A circuit which allows the operation of a VOR receiver in the presence of unwanted interference signals without sacrificing a fast response to omnirange bearing selector changes. A switching-type synchronous filter is used to filter the 30 Hz AM channel s... | 05/24/1977 |
| 4014025 | Scalloping suppression system and method A scalloping suppression system and method for use in a V.H.F. Omni Range (VOR) aircraft bearing determining system. The system is arranged to respond to changes in phase of the received radial which are due to position changes of the aircraft but not to ... | 03/22/1977 |
| 3968494 | Analyzer device for a VOR navigational receiver An analyzer device for VOR navigational receivers utilizes a first receiver section in which the reference phase, transmitted in the form of a frequency modulation, is available in demodulated form as reference signal, and a second receiver section in whi... | 07/06/1976 |
| 3941983 | OMEGA-VOR/DME positional data computer for aircraft Apparatus for combining positional data from OMEGA and VOR/DME radio navigation systems to provide computed positional data corresponding thereto includes a circuit for generating an OMEGA compensation in accordance with the difference between the compute... | 03/02/1976 |
