Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7990307 | Integrity monitor antenna systems for GPS-based precision landing system verification The integrity of operation of a GPS precision aircraft approach and landing system may be compromised by error producing effects of reflected multipath signals. An integrity monitor antenna system as disclosed may utilize both attenuation and shadowing of reflected ... | 08/02/2011 |
| 7982680 | Antennas providing near-spherical coverage with right-hand circular polarization for differential GPS use Accuracy of derivation of local corrections to GPS signals for use for aircraft landing guidance is subject to effects of reflected multipath signals. Antennas with a near-spherical antenna pattern of right-hand circular polarization, except within a downward cone, ... | 07/19/2011 |
| 7744349 | Blade flap locking for out-of-use helicopters In the absence of centrifugal force produced during rotation of helicopter blades, damage may result if a blade is rotated upward by wind or other forces. Lock units removably appended between the rotor assembly and each blade pitch housing attached to a helicopter ... | 06/29/2010 |
| 7583236 | Wideband communication antenna systems with low angle multipath suppression Vertical array antenna systems can provide broadband data link operation with reduction of susceptibility to low angle multipath effects, for communication during carrier landings by aircraft and other applications. In a relatively small package, an antenna system m... | 09/01/2009 |
| 7546183 | In-flight verification of instrument landing system signals An instrument landing system (ILS) provides signals in space receivable by an aircraft in flight to identify, for example, a point in space at which to start an approach along a glide slope path to a touchdown point on a runway. Atmospheric, ground and other conditi... | 06/09/2009 |
| 7525482 | Mitigation of array factor distortions for GPS and broadband reception An adaptive antenna system may be used with a GPS system to improve operation in the presence of interference signals. A resulting adapted antenna pattern will cause array pattern distortions affecting GPS satellite signals received at some signal arrival angles. By... | 04/28/2009 |
| 7508875 | Correlation matrix estimation via adaptive array perturbational processing to enable jammer location Prior adaptive antenna systems can reduce effects of a jamming or interfering signal by reducing antenna gain in the direction of such signal. However, direction finding capability to enable location of the source of such signal in order to permit corrective or othe... | 03/24/2009 |
| 7490389 | Swivel snap hook unit Swivel hook units are usable to position a fabric cover, such as a swimming pool cover. A base portion of unitary construction can be attached to a fabric cover via a strap sewn to the cover. A hook member is attached to the base portion via a fastener device which ... | 02/17/2009 |
| 7489719 | Training sequences, methods and wireless communication systems providing security-enhanced initialization Training sequences, for transmittal with an individual data packet via a wireless communication channel, enable estimation of the channel impulse response (CIR) to provide values usable for correction of multipath and other transmission disturbances with enhanced se... | 02/10/2009 |
| 7450082 | Small tuned-element GPS antennas for anti-jam adaptive processing A GPS antenna with anti-jam capabilities utilizes eight resonant loop radiator elements in a resonant exciter configuration to make available a primary and up to seven auxiliary antenna patterns usable with multi-pattern adaptive processing for anti-jam operation. A... | 11/11/2008 |
| 7417597 | GPS antenna systems and methods with vertically-steerable null for interference suppression Ground based GPS antennas for differential applications may be subject to intentional or other interference signals incident at low elevation angles. Described GPS antenna systems are usable to provide an antenna pattern having a vertically-steerable null. An array ... | 08/26/2008 |
| 7406120 | Transmission channel impulse response estimation using fast algorithms Channel impulse response estimation employs a training sequence to enable correction for multipath and other disturbances affecting a signal during transmission via a digital wireless communication channel. High-speed packet transmission rates, with a training seque... | 07/29/2008 |
| 7308331 | Apparatus and method for monitoring and maintaining plant equipment A computer system implements a process for gathering, synthesizing, and analyzing failure and other data relating to a pump, seal or other equipment. Data indicating the current state of the equipment may be gathered and verified prior to a failure occurring so that... | 12/11/2007 |
| 7191026 | Apparatus and method for selecting a mechanical seal An automated seal selection, seal design, manufacturing, and post sales system allows a distributor or untrained user to select a replacement seal for a pump. The automated system designs and engineers the seal, whether standard or special, and creates all drawings,... | 03/13/2007 |
| 7183978 | Wideband omnidirectional antenna A compact antenna includes a disk-type radiating element normal to a ground plane section. Each face of the radiating element may have a third-dimensional characteristic (e.g., a convex outer surface.) Dielectric material may be positioned on the ground plane forwar... | 02/27/2007 |
| 7119757 | Dual-array two-port differential GPS antenna systems Dual-array two-port GPS antenna systems can provide horizon to zenith reception for differential GPS applications. On a single mast, an antenna system may include a lower array of sub-arrays (e.g., fifteen sub-arrays) to provide elevation coverage from horizon up to... | 10/10/2006 |
| 7088303 | Folded path flat-plate antennas for satellite communication Flat-plate antennas have a compact form by use of a folded path network construction whereby received signals are coupled through a unitary network structure to an adjacent signal processing unit. On a folded path basis, processed signals are then coupled back into ... | 08/08/2006 |
| 7030813 | Array antennas with independent sum and difference excitations levels Improved punch-through performance is provided for applications such as sum and difference mode processing for IFF and other applications. With an array including a row of elements, difference sidelobe levels are increased relative to sum sidelobe levels by independ... | 04/18/2006 |
| 7015866 | Flush-mounted air vehicle array antenna systems for satellite communication An antenna system to enable satellite communication with a moving vehicle, such as an aircraft, includes an array formed by a group of subarrays. The array is positioned within a cavity and arranged to be mechanically tilted about a horizontal axis-of-rotation to pr... | 03/21/2006 |
| 6971817 | Jet blast resistant vehicle arresting blocks, beds and methods Aircraft arresting beds constructed of cellular concrete at ends of runways may be subject to damaging effects of jet blast phenomena. Arresting units resistant to such effects are described. A block of compressible material, such as cellular concrete, provides comp... | 12/06/2005 |
| 6934663 | Apparatus and method for monitoring and maintaining plant equipment A computer system implements a process for gathering, synthesizing, and analyzing data relating to a pump and/or seal or other rotating equipment failure. Data indicating the current state of the equipment is gathered and verified prior to a failure occurring so tha... | 08/23/2005 |
| 6914962 | Call-flow verification method and apparatus After implementation of an interactive voice response (IVR) system providing voice prompts (i.e., utterances) to aid a telephone caller, it is desirable to provide call-flow verification to validate system accuracy, particularly under high-volume or saturation calli... | 07/05/2005 |
| 6909440 | Stepped-decay video morphing for liquid crystal displays An LCD display has disparate turn-on/turn-off characteristics whereby a rapid decrease in signal intensity at pixel positions can cause a flash effect. Such effect is avoided or reduced for a video signal including a large intensity decrease between successive image... | 06/21/2005 |
| 6873301 | Diamond array low-sidelobes flat-plate antenna systems for satellite communication An antenna system, to enable communication with a moving vehicle via a satellite, utilizes an array of subarrays contiguously positioned in a diamond-type pattern. Straight edge boundaries of an array can maximize sidelobe degradation resulting from diffraction effe... | 03/29/2005 |
| 6832123 | Apparatus and method for selecting a mechanical seal An automated seal selection, seal design, manufacturing, and post sales system allows a distributor or untrained user to select a replacement seal for a pump. The automated system designs and engineers the seal, whether standard or special, and creates all drawings,... | 12/14/2004 |
| 6831601 | Circular array scanning with sum and difference excitation Antennas having a circular array of radiating elements are arranged to enable continuous 360 degree scanning of a sum and difference beam pattern. With a 108 element circular array, a sub array of 27 contiguous elements may be step scanned to 108 positions while mai... | 12/14/2004 |
| 6814355 | Mechanical split seal A split seal component includes two seal face segments in two holder halves and a method of assembly and installation. Each seal face segment has a primary sealing surface and a section extending axially from each primary sealing surface The holder halves are adapte... | 11/09/2004 |
| 6783327 | Helicopter blade folding with blade droop Blade fold hinge units are attachable between each helicopter blade and its hub attachment point, while maintaining continuity of mechanical connection of each blade to its hub portion. A two portion hinge unit has a first portion for blade attachment and a second p... | 08/31/2004 |
| 6779756 | Low-profile brake-in-spool aircraft arresting systems Arresting systems attachable to a tail-hook cable or other device for aircraft arrestment may have a total height of one foot, enabling above-ground installation at the edge of a runway. Arresting tapes are provided on horizontally positioned dual tape spools in a b... | 08/24/2004 |
| 6772364 | Fault tolerant field updating with alternation of memory areas Flash ROM memory may be utilized to enable field updates of system-level code necessary for providing system operation. However, a disruption during downloading can render a system inoperable. With alternating use of two memory areas, downloading is provided on a fa... | 08/03/2004 |
| 6744412 | High up/down ratio GPS antennas with serrated absorber To provide horizon to zenith reception coverage for Differential GPS operations, two antennas with complementary patterns may be used. An antenna for high-angle coverage includes a ring of four dipoles excited to provide progressive-phase-omnidirectional (PPO) cover... | 06/01/2004 |
| 6728660 | Apparatus and method for monitoring and maintaining plant equipment A computer system implements a process for gathering, synthesizing, and analyzing data relating to a pump and/or seal or other rotating equipment failure. Data indicating the current state of the equipment is gathered and verified prior to a failure occurring so tha... | 04/27/2004 |
| 6726400 | Vehicle arresting bed systems Vehicle arresting beds, for installation at the ends of aircraft runways, are effective to safely decelerate aircraft entering the bed. The arresting bed is assembled of a large number of blocks of cellular concrete having predetermined compressive gradient strength... | 04/27/2004 |
| 6685387 | Jet blast resistant vehicle arresting blocks, beds and methods Aircraft arresting beds constructed of cellular concrete at ends of runways may be subject to damaging effects of jet blast phenomena. Arresting units resistant to such effects are described. A block of compressible material, such as cellular concrete, pr... | 02/03/2004 |
| 6680710 | Crossed-loop radiation synthesizer systems Radiation synthesizer systems provide efficient wideband operation with loop antenna elements which are small relative to operating wavelength. Energy dissipation is substantially reduced by cycling energy back and forth between a high-Q radiator and a st... | 01/20/2004 |
| 6662062 | Apparatus and method for selecting a mechanical seal An automated seal selection, seal design, manufacturing, and post sales system allows a distributor or untrained user to select a replacement seal for a pump. The automated system designs and engineers the seal, whether standard or special, and creates al... | 12/09/2003 |
| 6618016 | Eight-element anti-jam aircraft GPS antennas A compact aircraft antenna for reception of GPS signals includes eight elements to provide eight antenna patterns usable for anti-jam signal processing. Four bent monopole elements are configured with vertical portions and horizontal inward-extending port... | 09/09/2003 |
| 6614403 | Radiation synthesizer receive and transmit systems Radiation synthesizer systems provide efficient wideband operation with an antenna, such as a loop, which is small relative to operating wavelength. Energy dissipation is substantially reduced by cycling energy back and forth between a high-Q radiator and... | 09/02/2003 |
| 6606063 | Radiation synthesizer feed configurations Radiation synthesizer systems provide efficient wideband operation with an antenna, such as a loop, which is small relative to operating wavelength. Energy dissipation is substantially reduced by cycling energy back and forth between a high-Q radiator and... | 08/12/2003 |
| 6590961 | Call protect systems with handoff redundancy Call-protect systems are arranged, upon an operating failure, to handoff a call in progress and maintain processing of the call without disruption or need to reinitiate. Application processor (AP) nodes are configured to continuously run standby call proc... | 07/08/2003 |
