Patents Assigned to Trex Enterprises Corp.
  • Patent number: 9927578
    Abstract: A fiber optic rotary connector providing communication between a first fiber optical bundle and a second fiber optical bundle rotating relative to said first bundle. The fiber optic rotary connector includes a K-mirror comprised of at least three mirror components and a set of gears adapted to rotate said K-mirror at a rotation rate equal to one half of the second bundle rotation rate. In a preferred embodiment the set of gears is a set of magnetic gears. And in another preferred embodiment the set of gears is a set of mechanical gears. Normally the first fiber optic bundle is stationary, but it may be rotating at a slower rate than the second bundle. In preferred embodiments the K mirror is comprised of three flat mirrors and two of the flat mirrors are positioned at about 30 degrees relative to the third flat mirror.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: March 27, 2018
    Assignee: Trex Enterprises Corp.
    Inventor: Edward Davis
  • Patent number: 9300508
    Abstract: A millimeter wave radio transceiver having all or substantially all of its components fabricated on a single chip or chipset of a small number of semiconductor chips. The chip or chipsets when mass produced is expected to make the price of millimeter wave radios comparable to many of the lower-priced microwave radios available today from low-cost foreign suppliers. Transceivers of the present invention operate in the range of about 1 Gbps to more than 10 Gbps. The transceiver of a preferred embodiment is designed to receive binary input data at an input data rate in 10.3125 Gbps and to transmit at a transmit data rate in of 10.3125 Gbps utilizing encoded three-bit data symbols on a millimeter carrier wave at a millimeter wave nominal carrier frequency in excess of 70 GHz.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: March 29, 2016
    Assignee: Trex Enterprises Corp.
    Inventors: John A. Lovberg, Richard Chedester
  • Patent number: 9217643
    Abstract: An angles only navigation system. The system includes an IMU coupled with a passive optical sensor. The optical sensor provides periodic updates to the IMU in order to correct for accelerometer and gyro drifts. The IMU computes the air vehicle's instantaneous position, velocity, and attitude using gyro and accelerometer measurements. The optical sensor images stars and satellites. The navigation filter combines optical sensor measurements with IMU inputs, and determines those corrections needed to compensate for the IMU drifts. By applying periodic corrections to the IMU using satellite angular measurements, the navigation filter maintains an accurate position estimate during an entire flight.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: December 22, 2015
    Assignee: Trex Enterprises Corp.
    Inventors: Mikhail S. Belenkii, Timothy Brinkley
  • Patent number: 9008212
    Abstract: A high data rate millimeter wave radio adapted to receive an binary input data at an input data rate in excess of 3.5 Gbps and to transmit at a transmit data rate in excess of 3.5 Gbps utilizing encoded three-bit data symbols on a millimeter carrier wave at a millimeter wave nominal carrier frequency, defining a carrier wavelength and period, in excess of 70 GHz with differential phase-shift keying utilizing eight separate phase shifts. Preferred embodiments of the invention can support many of the high data rate standards including the following group of protocols or standards: SONET OC-96 (4.976 Gbps); 4xGig-E (5.00 Gbps); 5xGig-E (6.25 Gbps); OBSAI RP3-01 (6.144 Gbps); 6xGig-E (7.50 Gbps); Fibre Channel 8GFC (8.5 Gbps); SONET OC-192 (9.952 Gbps); Fibre Channel 10GFC Serial (10.52 Gbps) and 10 GigaBit Ethernet.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: April 14, 2015
    Assignee: Trex Enterprises Corp.
    Inventors: John Lovberg, Richard Chedester
  • Patent number: 8597025
    Abstract: A celestial weapons orientation measuring system. The system includes a miniature celestial direction detection device. The device includes an inclinometer, a camera for imaging at least one celestial object and a processor programmed with a celestial catalog providing known positions at specific times of at least one celestial object and algorithms for automatically calculating target direction information based on the inclination of the system as measured by the inclinometer and the known positions of the celestial object as provided by the celestial catalog and as imaged by the camera. Similar to the training technique discussed in the background section, the pretend enemy wears a GPS detector and transmitter, and a computer system is preferably provided which determines when a trigger-pull results in a “casualty”.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: December 3, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Mikhail Belenkii, Donald Bruns, Timothy Brinkley
  • Patent number: 8542347
    Abstract: A super-resolution telescope. A target is illuminated with at least three laser beams, each beam having a slightly different frequency so as to produce an illumination pattern comprised of several sets of straight interference fringes which sweep across the target. The frequencies of the illumination beams are chosen so that each pair of beams has a unique beat frequency, and the corresponding fringe pattern for each pair sweeps over the target at a unique speed. By collecting a series of images, and demodulating them at the various beat frequencies, the downshifted spatial frequencies can be identified, correctly up-shifted, and fitted together with a set of special Fourier transform based algorithms to reconstruct high-resolution images. Applicants have performed laboratory experiments that this invention can provide resolution substantially better than diffraction limited resolution.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: September 24, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Dave Sandler, Brett Spivey, Louis Cuellar, Paul Fairchild
  • Patent number: 8471906
    Abstract: A celestial direction finding system. The system includes an inclinometer, at least one camera for imaging both the daytime sky and the nighttime sky and a computer programmed with a sun, moon and star catalog and algorithms for automatically determining directions based on positions of celestial bodies imaged by at least one camera and incline positions measured by the inclinometer. In a preferred embodiment all of the above features are combined in a single battery operated miniature celestial direction finding module. Geographical positions of nearby objects can be determined with the addition of a rangefinder and knowledge of the geographical position of the camera. The geographical position of the system in preferred embodiments can be determined with the addition of a GPS unit.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: June 25, 2013
    Assignee: Trex Enterprises Corp
    Inventors: Mikhail Belenkii, Donald Bruns, Timothy Brinkley
  • Patent number: 8422885
    Abstract: A bandwidth allocation and management system for cellular communication networks. The system includes at least one master optical switch and processing station, a number of aggregation base stations that are in optical fiber communication with a master optical switching and processing station and a number of auxiliary cellular base stations surrounded by and supported by each aggregation base station. In preferred embodiments a plurality of sets of three neighboring base stations are each adapted to receive and process RF signals transmitted by cellular users within a broadcast and receive range and transmit the RF signals received, by each of the three neighborhood base stations, from each of the cellular users in analog form to the master optical switching and processing station.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: April 16, 2013
    Assignee: Trex Enterprises Corp
    Inventors: Prasanna Adhikari, Hus Tigli, Robert A Fein
  • Patent number: 8401385
    Abstract: A large communication network suitable for nationwide or worldwide utilization. The present invention overthrows the conventional packet switching technologies with an all-optical network. The invention uses tunable laser sources to generate large number of highly stable narrow-band optical signals, each serving as a communication channel. With packet processing replaced by all-optical channels, the network become highly secure and scalable while harnessing the virtually unlimited capacity of fiber-optic. A large number of nodes (called area code nodes) are connected with all-fiber-optic links with all-optical switches. A routing algorithm provides one or more communication links from each area code node to every other area code node so that information never has to change carrier wavelength as it travels the network. Each area code node contains circuits that are provided to connect individual users to the network.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 19, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Brett Spivey, Eric Korevaar, Hus Tigli, Todd Barrett
  • Patent number: 8385977
    Abstract: A communication system and method that combines with direct high data rate links at least one content distribution networks with a number of base stations of at least one cellular communication networks. In preferred embodiments the high data rate direct communication links between the content distribution networks and the base stations include millimeter wave radio links and the cellular communication networks are provided with third or fourth generation communication equipment providing data rates in excess of 40 Mbps. In a preferred embodiment millimeter wave links operating at data rates in the range of about 1.25 Gbps or greater in frequency ranges of within the range of 71 GHz to 86 GHz provide communication channels between base stations and points of presence of the content distribution network.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: February 26, 2013
    Assignee: Trex Enterprises Corp
    Inventors: Robert A. Fein, Prasanna Adhikari, Eric Korevaar, John Lovberg
  • Patent number: 8374129
    Abstract: A high bandwidth, low latency middle-mile core communications network providing low-cost and high-speed communications among the users of the network. Embodiments of the invention include a number of network access points located at a number of spaced apart sites. At least some of these network access points in the network are in communication with each other via millimeter radio links with microwave backup links. In preferred embodiments the millimeter radio links include two millimeter radios, one transmitting in the frequency range of 71-76 GHz and receiving in the frequency range if 81 to 86 GHz and the other radio transmitting in the frequency range of 81-86 GHz and receiving in the frequency range if 71 to 76 GHz.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: February 12, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Brett Lewis, John Lovberg, Tzu-Chiang Hsieh, Kenneth Y. Tang, Robert Fein
  • Patent number: 8362946
    Abstract: A short range millimeter wave surface imaging radar system. The system includes electronics adapted to produce millimeter wave radiation scanned over a frequency range of a few gigahertz. The scanned millimeter wave radiation is broadcast through a frequency scanned transmit antenna to produce a narrow transmit beam in a first scanned direction (such as the vertical direction) corresponding to the scanned millimeter wave frequencies. The transmit antenna is scanned to transmit beam in a second direction perpendicular to the first scanned direction (such as the horizontal or the azimuthal direction) so as to define a two-dimensional field of view. Reflected millimeter wave radiation is collected in a receive frequency scanned antenna co-located (or approximately co-located) with the transmit antenna and adapted to produce a narrow receive beam approximately co-directed in the same directions as the transmitted beam in approximately the same field of view.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: January 29, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Grant Bishop, John A. Lovberg, Vladimir Kolinko
  • Patent number: 8362948
    Abstract: A long range millimeter wave imaging radar system. Preferred embodiments are positioned to detect foreign object debris objects on surface of the runway, taxiways and other areas of interest. The system includes electronics adapted to produce millimeter wave radiation scanned over a frequency range of a few gigahertz. The scanned millimeter wave radiation is broadcast through a frequency scanned antenna to produce a narrow scanned transmit beam in a first scanned direction (such as the vertical direction) defining a narrow, approximately one dimensional, electronically scanned field of view corresponding to the scanned millimeter wave frequencies. The antenna is mechanically pivoted or scanned in a second scanned direction perpendicular to the first scanned direction so as to define a two-dimensional field of view.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: January 29, 2013
    Assignee: Trex Enterprises Corp
    Inventors: Vladimir Kolinko, Chris Sexton, Grant Bishop, John Lovberg
  • Patent number: 8330092
    Abstract: Pixel circuits, capable of operating in either “snapshot” or “rolling integration” mode, and compatible with a conformal photodiode coating. Preferred embodiments of the present invention are compatible with these coating materials, as well as others, including amorphous Silicon. The preferred pixel circuits includes additional transistors not provided in prior art pixel circuits to divert leakage current away from integration nodes when not integrating, to reset the integration node, and to buffer and select the integrated voltage.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: December 11, 2012
    Assignee: Trex Enterprises Corp
    Inventors: Peter Martin, Paul Johnson, Chris Sexton
  • Patent number: 8279287
    Abstract: A passive optical crosswind profiling system. The system includes at least one telescope defining two apertures separated at a distance and adapted to collect light along at least two separate paths from a field of view containing a target and at least one high-speed digital camera defining at least one many pixel sensor wherein pixels of said at least one many pixel sensor are identified as separate blocks of pixels. The system further includes an optical system for focusing light collected along said at least two separate paths by said at least one telescope onto said at least one many pixel sensor to produce at least two images of the target scene and a high-speed computer processor programmed to with a special block matching correlation algorithm to correlate image data collected the separate blocks of pixels in order to calculate a crosswind profile along a path between said system and said target.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: October 2, 2012
    Assignee: Trex Enterprises Corp
    Inventor: Mikhail Belenkii
  • Patent number: 8218918
    Abstract: A scalable optical switch especially useful for switching multimode beams carried by optical fibers. Light from an input fiber is focused by a lens which is moved in an x-y direction perpendicular to the beam direction in order to switch the beam from one output fiber to a different fiber. In preferred embodiments the beam can be directed to any one of as many as 90 output fibers. Techniques for scaling the switch to produce N×N switches with N being large are described. Embodiments of the present invention can also be utilized to create more elaborate fiber optical switches such as an N×N switch and a N2×N switch.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: July 10, 2012
    Assignee: Trex Enterprises Corp
    Inventors: Hus Tigli, Matthew Last, Yoshi Taketomi
  • Patent number: 8098764
    Abstract: Millimeter wave radio with phase modulation. In preferred embodiments each of the two radios in a link uses a single aperture to transmit radiation in one of the two bands, and receive radiation in the other of the bands. The counterpart radio used to form a link preferably is almost identical, except for the interchange of the transmit and receive frequencies. Preferred embodiments utilize a modulation scheme in which the radios each receive on-off keyed data and transmit the on-off keyed data encoded in a millimeter wave carrier wave with binary phase shift keying.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: January 17, 2012
    Assignee: Trex Enterprises Corp.
    Inventors: Eric Korevaar, Richard Chedester, Paul Johnson
  • Patent number: 8090379
    Abstract: A communication system providing wireless communication among wireless users through a number of cellular base stations, each including at least transport management equipment and broadband equipment, at least one of which supports at least remote cellular station including RF equipment for communication with users of cellular devices. The system includes at lease one wireless narrow beam communication link operating at millimeter wave frequencies in excess of 60 GHz connecting a remote cellular station with a cellular base station equipped with broad band conversion electronic equipment and transport management equipment. In preferred embodiment the communication system includes a large number of remote cellular stations with each remote cellular station serving a separate communication cell.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: January 3, 2012
    Assignee: Trex Enterprises Corp
    Inventors: Thomas Lambert, Paul Johnson, Eric Korevaar, Eduardo Tinoco
  • Patent number: 8090411
    Abstract: A lens-based millimeter wave transceiver for use in wireless communication systems operating in the E-band spectrum consistent with the FCC rules regulating the 71-76 GHz and 81-86 GHz bands. The transceiver includes a single lens adapted for transmission of millimeter radiation to form communication beams in one band of either a band of about 71-76 GHz or a band of 81-86 GHz and for collection and focusing of millimeter wave radiation from communication beams in the other of the two bands. It includes a feed horn adapted to broadcast millimeter radiation through said single lens and to collect incoming millimeter wave radiation collected and focused by said single lens. A millimeter wave diplexer separates incoming and outgoing millimeter wave radiation.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: January 3, 2012
    Assignee: Trex Enterprises Corp
    Inventors: Eric Korevaar, Eduardo Tinoco, Richard Chedester, Vladimar Kolinko
  • Patent number: 8058598
    Abstract: A system and method for imaging far away fast moving objects such as satellites in low earth orbit. The object to be imaged is illuminated simultaneously with a composite beam comprised of a large number of separate laser beams from a large number of laser sources each from a separate position with each of the separate laser beams shifted in frequency with respect to each other beam so as to produce a large number of beat frequencies in the composite beam. The positions of the laser sources are changed rapidly during an illumination period of a few seconds. Light reflected from the object is collected in a large number of light buckets and information defining the intensity of the collected reflected light as a function of time is stored. The positions and frequencies of each of the laser sources are also recorded and stored as a function of time.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: November 15, 2011
    Assignee: Trex Enterprises Corp.
    Inventors: Dave Sandler, Brett Spivey, Louis Cuellar, Paul Fairchild