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| Number | Title | Issue Date |
| 7330795 | Method and apparatus for providing signal analysis of a BioNEMS resonator or transducer An outputs signal, v(t), is generated from a bioNEMs transducer and mixed with a reference signal and then filtered to generate a correlator output, r(t). The correlator output is detected to generate a signal u(t) and then determined whether the signal u(t) satisfi... | 02/12/2008 |
| 7256737 | Method and apparatus for geolocating a wireless communications device The time difference of arrival for a signal received at two or more receiving sites as transmitted from a wireless communications device, is determined by a frequency domain technique. The constituent frequencies of the signals received at the two or more receiving ... | 08/14/2007 |
| 7164364 | Swimming pool spotlight lighting system This system is characterized in that it comprises a radio remote control, with transmission protocol, and a modulator-receiver decoding the radio signal and modulating the network voltage to thus transmit the information to the light source being installed inside th... | 01/16/2007 |
| 7146147 | Aircraft wireless communication system and method A system and method for providing wireless communication services to passengers of an aircraft. An incoming signal is received from a base station at an external antenna on the aircraft. The incoming signal is converted to a low-energy signal type to be conveyed acr... | 12/05/2006 |
| 6975582 | Dual mode satellite/cellular terminal A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and t... | 12/13/2005 |
| 5394332 | On-board navigation system having audible tone indicating remaining distance or time in a trip The present invention relates to an on-board navigation system which continuously informs a driver of the degree of approach of a vehicle to a destination by outputting a sound suited to the driver's actual running feeling.... | 02/28/1995 |
| 4701760 | Method for positioning moving vehicles and exchanging communications between the vehicles and a central station A method for monitoring vehicles from a central station, consisting of obtaining the approximate coordinates of each vehicle from signals transmitted by stations of the world omega network and using a vehicle-carried receiver. These approximate coordinate... | 10/20/1987 |
| 4680590 | Position finding system Three fixed reference stations having known positions comprise Omega receivers. Phase measurements made at all three stations are assembled at a master station, utilizing landlines or radio links and, using the known positions of the stations, a central p... | 07/14/1987 |
| 4672383 | Craft guidance system A craft guidance system 200 has signal transmission stations AB, CD, AC operable to provide three intersecting hyperbolic lattices 21, 20, 120. One transmission station pair AB provides a moving lattice 21 which travels at the same speed and in the direct... | 06/09/1987 |
| 4276552 | Automatic synchronization for receivers of a navigational system An essentially worldwide navigational network (Omega) operating at a very low frequency in an internationally allocated navigational band in the electromagnetic spectrum is provided with a receiver capable of automatic synchronization. The RF signal is de... | 06/30/1981 |
| 4191958 | Radiolocation with respect to an Own station, using Omega signals or the like Radiolocation, with respect to an Own station, of a transmitter-equipped Other station by triggering the transmitter to transmit identification messages in response to timing signals from a reference source such as an Omega transmitter, receiving the mess... | 03/04/1980 |
| 4138680 | Selective sampling method In an Omega receiver, for each of the Omega frequencies (10.2 KHz, 11 1/3 KHz, 13.6 KHz), a desired frequency is isolated by selectively sampling received signals at predetermined intervals. The samples are then processed such that samples corresponding t... | 02/06/1979 |
| 4134217 | Omega simulation This invention is a system for teaching the principles of Omega navigation and the operation of Omega receivers, which system comprises a simulation computer that provides to an Omega interface (which acts as an Omega receiver) the appropriate Omega signa... | 01/16/1979 |
| 4024383 | Method and system for navigation employing incremental range difference A navigation method and system suitable for highly accurate all-weather navigation of vehicles such as ships and aircraft. An initial position of the vehicle relative to a plurality of known points each located at predetermined geographic positions is fir... | 05/17/1977 |
| 4015262 | Digital filters for obtaining quadrature components of a periodic signal A digital filter for obtaining quadrature components in a periodic signal, such as the recovery of phase and/or amplitude of two or more periodic signals through coherent digital summation techniques. In one embodiment of the invention, the digital filter... | 03/29/1977 |
| 3997902 | Transmission of radio navigation phase corrections A method of and apparatus for differential mode navigation in a sequential system of radio-navigation by phase reception. A transmitted amplitude-modulated radio-navigation carrier wave is phase or frequency modulated, this modulation being effected by a ... | 12/14/1976 |
| 3996515 | Method for frequency cross-coupling of channels in an Omega Navigation receiver system This invention relates generally to radio navigation receivers and particularly to multiple frequency phase tracking receivers in which phase information received from a network of transmitters, each radiating coherent signal energy on a plurality of disc... | 12/07/1976 |
| 3969727 | Position detecting device for omega receiving system Position detecting device for use with omega navigating apparatus which includes a receiver for receiving two omega signals from different stations, a synchronous generator for producing first and second signals synchronized with the omega signals and fre... | 07/13/1976 |
| 3950752 | Navigation receiver system for synchronizing to noisy, asymmetrical signals In an Omega receiver a phase detection system operative on both rising and falling edges of a hard limited, received Omega signal to compensate for random noise and asymmetries in the hard limited signal.... | 04/13/1976 |
| 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 |
| 3936762 | Digital phase-lock loop systems for phase processing of signals A digital phase-locked loop in which an error signal representing the difference between the phases of an input signal and an output signal is converted to a digital signal having a time-varying value. A programmable divider means is provided to produce a... | 02/03/1976 |
| 3936763 | Null input OMEGA tracking filter system Tracking filter apparatus for determining the relative phase of synchroni CW navigation systems. The apparatus generates a square wave signal the phase and amplitude of whose fundamental sinusoidal components match those of the fundamental components of ... | 02/03/1976 |
