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| Application No. | Application Title | Issue Date |
| 20080231495 | MULTIPURPOSE PERIPHERAL DEVICE FOR RECEIVING SIGNALS A multipurpose peripheral device is operated with a portable electronic device. The portable electronic device includes a bus connection port. The multipurpose peripheral device includes a circuit carrier, at least two types of wireless signal-receiving/processing modul... | 09/25/2008 |
| 20070194979 | Navigational aid and carrier sense technique A navigational aid for use as an AIS apparatus includes a memory for storing information about previous use of individual time slots synchronized with transmission schedules of other stations and a signal detector for judging whether an information signal exists in a ti... | 08/23/2007 |
| 20070080849 | Digital DPSK demodulation method and system An aircraft transponder comprises an antenna for receiving an RF signal a downconverter coupled to the antenna for downconverting the RF signal to an IF signal, an analog-to-digital converter coupled to the downconverter to digitize the IF signal to produce a digital si... | 04/12/2007 |
| 20070018881 | Mode S zone marker An apparatus and method for a zone marker having an L-band radio antenna that is structured for receiving a Mode S radio frequency interrogation signal and broadcasting a Mode S radio frequency reply signal; a Mode S transponder that is structured for generating a Mode ... | 01/25/2007 |
| 20060267829 | Traffic alert collision avoidance system (TCAS) devices and methods A device for determining the bearing of a vehicle using Inertial Reference Unit (IRU) and Traffic Alert Collision Avoidance System (TCAS) data. The device includes a means to communicate with the vehicle such as a transmitter, receiver, and antenna. The device also incl... | 11/30/2006 |
| 20060092016 | Systems, methods and devices for area-based localization An improved compact, secure localization tag useful for identifying and tracking the tag in an environment comprising discrete areas is disclosed. Further, systems and methods for area-based localization of tags using received signal strengths is also disclosed. Trackin... | 05/04/2006 |
| 20060092072 | Self-locating devices via highly directional RFID tags in controlled location A monitored area is provided multiple RFID tags placed at defined coordinates/locations throughout the extended area. These RFID tags respond to receipt of a RF signal by transmitting/broadcasting their unique identifier (ID) within the specific area in which the tag is... | 05/04/2006 |
| 20060044179 | Method and system for determining the position marine vessels and similar objects A method for determining the relative position between two or more objects in a marine environment, including waterways, of which at least one object can be maneuvered relative to one or more other objects. At least one interrogator is arranged on one or more of the obj... | 03/02/2006 |
| 20060017608 | Methods and system suppressing clutter in a gain-block, radar-responsive tag system Methods and systems reduce clutter interference in a radar-responsive tag system. A radar transmits a series of linear-frequency-modulated pulses and receives echo pulses from nearby terrain and from radar-responsive tags that may be in the imaged scene. Tags in the vic... | 01/26/2006 |
| 20050156777 | INTEGRATED TRAFFIC SURVEILLANCE APPARATUS An apparatus and method for combining the functionality of multiple airborne traffic surveillance systems that operate in the L-band frequency range. The apparatus and method combine the functionality of both a Traffic Alert Collision Avoidance System (TCAS) and a Mode-... | 07/21/2005 |
| 20050104731 | System and method for detecting eavesdropping device Disclosed are an eavesdropping device detecting system and a detecting method thereof. The eavesdropping device detects the eavesdropping device based on waves generated from the eavesdropping device and displays a detecting result as a visual image, so an existence of ... | 05/19/2005 |
| 20050062640 | Radar systems The present invention provides a rotating antenna that can be used in combination with a coded modulated transponder as part of a vehicle positioning and tracking radar system. The antenna transmits a pair of frequency-modulated continuous-wave (FMCW) electromagnetic si... | 03/24/2005 |
| 20050024256 | Passive Airborne Collision Warning Device and Method A passive airborne mounted collision warning system suitable for light aircraft that enables an observer aircraft to determine the position of a nearby transponder-equipped target aircraft. The transponder-equipped target aircraft transmits replies responsive to interro... | 02/03/2005 |
