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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 8149167 | System and method for removing channel phase error in a phase comparison direction finder System and method for removing channel phase error in a phase comparison direction finder. By using this system, the phase error, generated in the channel path in finding the direction by using the phase comparison direction finder, can be injected into the receivin... | 04/03/2012 |
| 8040279 | Measuring positions Techniques, systems and computer readable medium are disclosed for measuring a position of an object device. A position measuring apparatus includes a receiving unit designed to receive a signal transmitted from an object device for position measurement. The positio... | 10/18/2011 |
| 7671800 | Beamforming apparatus and method in a smart antenna system A DOA estimating apparatus and method in a smart antenna system using a fixed beamforming scheme are provided. An uplink weight for a received uplink signal is calculated and a projection matrix of an interference signal is generated using the uplink weight. A covar... | 03/02/2010 |
| 7598910 | Direction finding and mapping in multipath environments Determining the direction of a direct arrival path between a receiver and a transmitter in a multipath environment by determining a transmitter heading relative to the receiver as proportional to a frequency offset of the direct path signal component relative to a m... | 10/06/2009 |
| 7405696 | Method for calibrating and AOA location system for frequency hopping air interfaces A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at... | 07/29/2008 |
| 7379020 | Apparatus and method for estimating direction of arrival of radio wave A radio wave direction-of-arrival estimation apparatus and method that can estimate, at high speed and with good accuracy, the direction of arrival of a plurality of incoming waves having high correlation. The radio wave direction-of-arrival estimation apparatus inc... | 05/27/2008 |
| 7379019 | Method for angle of arrival determination on frequency hopping air interfaces A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at... | 05/27/2008 |
| 7271764 | Time of arrival estimation mechanism According to one embodiment, a method is disclosed. The method includes receiving data at a first wireless radio device that has been transmitted from the first wireless radio device, receiving time stamp information from a second first wireless radio device and est... | 09/18/2007 |
| 7221239 | Variable power divider A variable power divider and method can vary the RF power between ports in a high power and multi-carrier RF environment, such as is used in controlling signals sent and received in a base station antenna. The variable power divider can include a single-control phas... | 05/22/2007 |
| 7127218 | Scanning antenna diversity system for FM radio for vehicles A scanning antenna diversity system for mobile FM radio having an antenna system with controllable logic switch, wherein a different high-frequency reception signal is passed to a receiver. An IF signal turns on a diversity processor, which switches the logic switch... | 10/24/2006 |
| 7079987 | Tunable filter device for spatial positioning systems A device for spatial positioning systems includes a programmable measurement filter that is dynamically tuned by the device signal processing unit. The signal processing unit analyzes available data including the measurement signal to determine the likelihood that a... | 07/18/2006 |
| 7050509 | Digital isolation system with hybrid circuit in ADC calibration loop An improved digital capacitive isolation barrier system is provided that is suitable for use in a telephone or modem where the locally powered circuits must be effectively isolated from the public telephone system, while permitting data transfer across the barrier. ... | 05/23/2006 |
| 6961017 | Apparatus for providing anti-jamming capability to legacy GPS receivers Most GPS equipped platforms currently in use have no anti-jamming capability. However, for various reasons, the cost of replacing the legacy GPS receivers with newer GPS receivers capable of anti-jamming is often prohibitive. Thus, an apparatus having antenna electr... | 11/01/2005 |
| 6947734 | Method and system for location accuracy analysis A wireless telecommunications network uses a wireless location technology to determine the locations of mobile stations. As part of a location accuracy analysis process, the wireless location technology is used to obtain a measured latitude and longitude for a mobil... | 09/20/2005 |
| 6897821 | Spacecraft off-gimbal IRU precision payload pointing and disturbance rejection system An off-gimbal pointing system is improved using filtering of resolver and gyro responses respectively applied at the output of the resolvers and gyros for attenuating high frequencies resolver responses and gyro responses that effectively degrades the high frequency... | 05/24/2005 |
| 6861983 | Method and apparatus for reducing electromagnetic interference and jamming in GPS equipment operating in rolling environments A method and apparatus for reducing electromagnetic interference (EMI) and jamming in Global Positioning System (GPS) receivers operating on rolling or spinning platforms and/or environments is provided. An antenna system having a pair of diametrically-mounted eleme... | 03/01/2005 |
| 6839025 | Precision direction finding sensing systems and methods Methods and systems are provide for precision direction finding capabilities for a sensing system, the method comprising providing a sensing system that utilizes an amplitude direction finding scheme, receiving a received signal in at least two receivers of the ener... | 01/04/2005 |
| 6690458 | Methods and apparatuses for reconstructing angle information Methods and apparatuses for determining angular information from a target. A plurality of sensors on an image plane are used to obtain measured amplitude data. An azimuth and elevation may be estimated using this measured amplitude data. A residual error ... | 02/10/2004 |
| 6334218 | Device for receiving satellite broadcast and a receiving method therefor A satellite broadcast receiver comprises an antenna, a tuner, a modulator, a FEC decoder, a microprocessor, and an antenna driver. The antenna receives the satellite signal and the tuner tunes the satellite signal received by the antenna, and the modulato... | 12/25/2001 |
| 6266585 | Gyrocompassing by intermittent GPS interferometry The invention described here concerns the use of GPS (Global Positioning System) interferometry, or any similar satellite constellation, to estimate the attitude of a vehicle, and is particularly suited for LEO (Low Earth Orbit) satellites. The invention ... | 07/24/2001 |
| 6230018 | Devices and processing in a mobile radio communication network having calibration terminals In a mobile communication network, the accuracy of location determinations for mobiles based on TDOA measurements made by the mobiles is increased by measuring the TDOA of signals from base station pairs at a known location and generating correction facto... | 05/08/2001 |
| 6184830 | Compensation of direction finding estimates for polarimetric errors An algorithmic technique which allows antenna arrays that are used for interferometric direction finding to have elements with arbitrary orientation. This technique allows the phase errors associated with non-identical element orientation to be estimated,... | 02/06/2001 |
| 5570099 | TDOA/FDOA technique for locating a transmitter A process for locating a transmitter in which the signal is received by first and second receivers and then processed by respective analog to digital converters and filtered to yield first and second digital signals. There is relative motion between at le... | 10/29/1996 |
| 5543803 | Fail safe receiver system A receiver system using antennas which may be effected by reflections or multipath propagation errors wherein the antennas are placed at spaced apart locations and produce outputs which differ due to the difference of locations and which may differ due to... | 08/06/1996 |
| 5122807 | Motion-compensated direction finding system The improved direction finder of the instant invention has three orthogonal antenna elements or an array of antenna elements consisting of antennas in three dimensions. Amplitude and phase difference measurements are made on various combinations of antenn... | 06/16/1992 |
| 5059969 | GPS satellite signal tracking method for GPS receivers A method for recapturing a satellite at the highest elevation angle as quickly as possible with a GPS receiver having a plurality of receiving channels when a state of receiving satellite signals recovers to normal after having been interrupted by obstacl... | 10/22/1991 |
| 5039991 | Perturbation modeling system for use in processing direction-finding antenna outputs A system is disclosed in which a direction-finding system (12) employed on an aircraft (20) receives RF transmissions from a remote signal source (16). Amplitude and phase data concerning the transmission are used for direction finding but are perturbed b... | 08/13/1991 |
| 4855748 | TCAS bearing estimation receiver using a 4 element antenna A direction finding receiving system for use on a protected aircraft in which a signal from an ATCRABS transponder on an intruder aircraft is received has been described incorporating a four element interferometer type antenna array, reversing switches, i... | 08/08/1989 |
| 4754280 | Attitude sensing system An attitude sensing system which incorporates the precision in attitude sensing of a satellite navigation system with the dynamic tracking capabilities of an inertial measurement unit. Optimally estimated attitude and system error signals are combined wit... | 06/28/1988 |
| 4613977 | Digital Navstar receiver A receiver for a Navstar satellite navigation system wherein the satellite signals are down converted into zero i.f. quadrature signals (70a, 70b) and digitized (71a, 71b). The digitized signals address a PROM (72) together with additional bits representi... | 09/23/1986 |
| 4532519 | Phased array system to produce, steer and stabilize non-circularly-symmetric beams A phased array antenna system for eliminating antenna induced errors and distortions comprising an antenna array consisting of orthogonal rows and columns of antenna elements in which each row of elements is supplied signal power by a single beam forming ... | 07/30/1985 |
| 4408207 | Angular error detecting device An angular error detecting device in which all components of arriving polarized waves are obtained independent of the type and amount of polarization. A higher mode detector outputs two higher mode components which are in orthogonal relation. These two co... | 10/04/1983 |
| 4395778 | Undesired signal canceller Apparatus for cancelling undesired signals for a radient energy receiver having first and second antennas which are spaced a distance apart and including a phase compensation circuit connected to one of the antennas and a variable phase shift circuit conn... | 07/26/1983 |
| 4348676 | Automatic phase alignment system for a tracking antenna The tracking signals of a monopulse satellite tracking system are optimized by aligning the phases of the azimuth and elevation channels (the "difference" channels) with the reference (or "sum") channel using an autophase controller and a simulated far fi... | 09/07/1982 |
| 4335384 | Logarithmic amplifier calibration means A logarithmic amplifier calibrator having a signal generator providing an exponentially decaying calibration signal and a pulse generator providing a sample pulse each time the calibration signal has decayed by a predetermined decibel (db) increment. More... | 06/15/1982 |
| 4308539 | Compensated phased array antenna A compensated phased array antenna is shown wherein the drive to each one of a plurality of phase shifters is changed to compensate for changes in operating conditions.... | 12/29/1981 |
| 4308620 | System for maintaining phase coincidence between a carrier wave and sidebands produced by a transmitter To maintain a cophasal relationship between two concurrently transmitted waves of the same high frequency derived from a common pilot oscillator, one of these waves being modulated by a low-frequency signal, a phase shifter in cascade with the modulator i... | 12/29/1981 |
| 4303922 | Method for reducing errors due to source amplitude modulation in a sequential amplitude comparison direction finding system A technique and apparatus are disclosed which greatly reduce error in sping antenna direction finding systems due to amplitude modulation of the source. A second omnidirectional antenna and its associated receiver are used in two alternative methods to r... | 12/01/1981 |
| 4203114 | Digital bearing indicator Apparatus for digitally indicating the bearing angle of a source of microwave energy includes an antenna array of a plurality of antenna elements equispaced about an arc of a circle in a plane. Connected to each of the antenna elements is a different inpu... | 05/13/1980 |
| 4092645 | Radar jammer homing circuit 1. In a fire control radar system of the character which produces radar signals having a predetermined repetition period and which includes coupled in cascade; an intermediate frequency amplifier, a second detector, a video amplifier, a junction, an angle... | 05/30/1978 |
