| Patent Number |
Title Of Patent |
Date Issued |
| 5553209 |
Method for automatically displaying map symbols |
September 3, 1996 |
| In a Geographic Information System, a computer retrieves records from a data base for each map feature that lies within the extent of the displayed portion of the map. The records for point features are organized in "flat" structures where each map feature is represented by a single |
| 5552752 |
Microwave vertical interconnect through circuit with compressible conductor |
September 3, 1996 |
| A microwave frequency transmission line provides the capability of solderless interconnections between stacked microwave hybrid and printed wiring board (PWB) assemblies. A wire-like transmission line is embedded in a dielectric and placed in an open square trough. A compressible center |
| 5551907 |
System for ultrasonic lap grinding and polishing |
September 3, 1996 |
| A method is disclosed for grinding and polishing a substrate (20). An abrasive slurry (26) is applied to the surface (22) of the substrate (20). A lap (28) is moved across, and in engagement with, the surface of the substrate (20) in the medium of the abrasive slurry (26). Ultrasonic |
| 5551302 |
Portable gas purge and fill system for night vision equipment |
September 3, 1996 |
| A portable gas purge and fill system. The inventive system (10) includes a portable housing having gas inlet and outlet couplings. An electronic pressure gauge (30) is disposed within the housing (11) for measuring the pressure of the fluid at the outlet (24) thereof. A self-check mechan |
| 5549795 |
Corona source for producing corona discharge and fluid waste treatment with corona discharge |
August 27, 1996 |
| A corona source suitable for use in vehicle ignition systems uses a conductive coil that receives an RF input at one end and has a corona discharge site at the other end, with a reference electrode capacitively coupled to the coil. The pitch and the length of the coil are selected to |
| 5548668 |
Velocity-matched electrodes for electro-optic travelling-wave modulators and method for forming |
August 20, 1996 |
| Velocity-matched electrodes that are sufficiently index-matched to use in linearized directional-coupler modulators are provided by placing a low dielectric constant material layer over the travelling-wave modulator electrodes, followed by a metal layer that is electrically connected to |
| 5548442 |
Optical sight assembly |
August 20, 1996 |
| An optical assembly (10) includes a first plurality of optical elements (14) providing the viewer a first field of view and a second plurality of optical elements (18) that, when moved into the optical path (16), provides the viewer with a second field of view. A support structure (36) |
| 5548439 |
Three field of view refractive infrared telescope with fixed medium filed of view |
August 20, 1996 |
| An infrared refractive reimaging afocal telescope (10) has an objective lens group (12), an eyepiece lens (14), and a switching lens group (16). The system (10) provides a plurality of magnification modes in a compact arrangement. Diffractive surfaces are provided on at least one of the |
| 5548329 |
Perceptual delta frame processing |
August 20, 1996 |
| A perceptual delta frame processor for use with a detector array and a noninterlaced video display that produces an image equivalent to that of an image difference processing system. The processor includes a responsivity equalization circuit for processing output signals provided by |
| 5548299 |
Collinearly polarized nested cup dipole feed |
August 20, 1996 |
| A nested cup dipole feed capable of collinear polarization for all bands, and frequency staggering of one linear polarization with respect to the orthogonal linear polarization. The dipole elements for all bands are collinearly placed, making one linearly polarized set to be orthogonal t |
| 5548244 |
Method and apparatus for eliminating DC offset for digital I/Q demodulators |
August 20, 1996 |
| A method and apparatus utilizing the techniques of frequency shifting and filtering for converting an input signal having a desired signal at intermediate frequency and an undesired DC offset to a baseband frequency signal in which the undesired DC offset is eliminated. The apparatus |
| 5548140 |
High-Speed, low-noise millimeterwave hemt and pseudomorphic hemt |
August 20, 1996 |
| An epitaxial structure and method of manufacture for a field-effect transistor capable of high-speed low-noise microwave, submillimeterwave and millimeterwave applications. Preferably, the epitaxial structure includes a donor layer and/or buffer layer made from a semiconductor materi |
| 5548129 |
Quantum well structure with self-aligned gate and method of making the same |
August 20, 1996 |
| Quantum well structures are fabricated by use of a process employing a Focused Ion Beam (FIB) scanning in the surface of a semiconductor substrate. The quantum well structures thus fabricated include Resonant Tunneling Transistors (RRTs) and one dimensional quantum wire devices, fabr |
| 5546238 |
Zoom lens having high speed multi-lens drive |
August 13, 1996 |
| A high speed zoom lens arrangement (2) including a plurality of lens elements (4,5), each being disposed along a common optical path (3). The zoom arrangement has a single optical drive (40) and piezoelectric clamps (10, 11, 20, 21), associated with each lens for selectively connecting |
| 5546187 |
Self-referencing laser-based ultrasonic wave receiver |
August 13, 1996 |
| An optical self-referencing ultrasonic receiver for detecting ultrasonic waves removes wavefront distortions imparted on the optical beams by diffusely reflecting readout surfaces or other sources, compensates for noise induced phase errors on the readout beam, compensates for amplitude |
| 5546097 |
Shaped dual reflector antenna system for generating a plurality of beam coverages |
August 13, 1996 |
| A dual-reflector antenna system (40) is provided for generating a shaped main beam radiation pattern (20) and at least one additional secondary spot beam radiation pattern (30,32). The antenna system (40) includes a main shaped reflector (10) having a shaped reflective surface (11) o |
| 5546091 |
Psuedo-color display for enhanced visual target detection |
August 13, 1996 |
| A pseudo-color display useful for enhanced target detection of two-dimensional images such as SAR data. The system includes a color display apparatus responsive to red, green and blue display control signals, and apparatus responsive to the input image data for remapping the respecti |
| 5546049 |
Frequency scalable pre-matched transistor |
August 13, 1996 |
| A relatively high power active gain device, such as MESFET or similar transistor, has distributed impedance characteristics at relatively high RF (microwave) frequencies of operation due to physical device size limitations. A transmission line segment (104) is placed in relatively cl |
| 5545956 |
Window wiper system for small windows |
August 13, 1996 |
| A motor drive system for imparting oscillating motion to a window wiper is disclosed which slows the wiper as it approaches respective right and left positions and holds the wiper at the right and left positions for a selectable delay interval in order to avoid deleterious effects of |
| 5543815 |
Shielding screen for integration of multiple antennas |
August 6, 1996 |
| A shielding screen for use in an integrated antenna system that includes at least two antennas that emit interfering signals that interfere with each other and at least one antenna that emits a non-interfering signal that does not interfere with the interfering signals. The shielding scr |
| 5543812 |
Active deflection compensator |
August 6, 1996 |
| An active deflection compensator for use with an antenna system that comprises a linear scanner ridge that projects into a waveguide cavity coupled to an antenna array. Linear actuators are coupled to the linear ridge at opposite ends thereof and adjacent its center. Transducers are |
| 5543628 |
Quantum well infrared filter |
August 6, 1996 |
| A controllable infrared filter (22) includes a quantum well filter unit (24) operable to absorb infrared energy at a selected wavelength. The quantum well filter unit (24) has a quantum well layer (26) made of an infrared transparent semiconductor mate rial and a barrier layer (28, 32) |
| 5542334 |
Missile launch safety enhancement apparatus |
August 6, 1996 |
| A missile launch safety enhancement apparatus (135) for inhibiting the launch sequence of a missile launched from an aircraft-based or land vehicle-based missile launch system. The apparatus (135) incorporates means for producing a prefire signal (102a). The prefire signal produced i |
| 5542254 |
Cryogenic cooler |
August 6, 1996 |
| An improved cryogenic cooler 100 includes a flange 106 with an elongated pressure vessel 120 extending therefrom. The pressure vessel 120 is connected to the flange 106 at a proximal end thereof. The pressure vessel 120 is adapted to cool a surface in the proximity of the distal end |
| 5542107 |
Cellular system employing base station transit diversity according to transmission quality level |
July 30, 1996 |
| A cellular system has base stations in which diversity transmission is controllably employed to improve voice communications as needed. Normal signal transmission is employed in each voice channel unless it is detected that quality has dropped to a point where diversity transmission |
| 5541614 |
Smart antenna system using microelectromechanically tunable dipole antennas and photonic bandgap |
July 30, 1996 |
| An antenna system includes a set of symmetrically located center-fed and segmented dipole antennas embedded on top of a frequency selective photonic bandgap crystal. A two-dimensional array of microelectromechanical (MEM) transmission line switches is incorporated into the dipole ant |
| 5540405 |
Method and apparatus for compensating for magnetic disturbance torques on a satellite |
July 30, 1996 |
| This invention discloses a method for compensating for the disturbance torque on an orbiting satellite (10) from the interference of the earth's magnetic field lines with particular current loops associated with the satellite (10). The current flow in these current loops on the satellite |
| 5539228 |
Field-effect transistor with high breakdown voltage provided by channel recess offset toward dra |
July 23, 1996 |
| A monolithic-microwave-integrated-circuit (MMIC) metal-semiconductor-field-effect (MESFET) transistor (40) or other type of field-effect transistor has a double-recessed channel region (32,42) with a gate recess (42) formed in a channel recess (32). The channel recess (32) is offset |
| 5539222 |
High yield sub-micron gate FETs |
July 23, 1996 |
| Yields of FETs such as HEMTs are significantly improved by establishing an elongate gate contact opening in a patterning material with the patterning material overhanging the opening along both its elongate sides and its ends. A contact metal is next evaporated both into the opening and |
| 5537234 |
Relective liquid crystal display including driver devices integrally formed in monocrystalline s |
July 16, 1996 |
| A silicon dioxide etch stop layer (30) is formed on an inner surface (28b) of a monocrystalline silicon semiconductor layer (28), and a silicon carrier wafer (52) is bonded to the etch stop layer (30). The exposed outer surface (28a) of the layer (28) is uniformly thinned to approxim |
| 5536126 |
Assembly with solid state, phase transformable locking fastener |
July 16, 1996 |
| A locking assembly is formed of a first article (40), a second article (44), and a locking fastener (46) positioned between the two articles and made of a shape memory alloy material. The locking fastener (46) is dimensioned to have a first shape below the transformation temperature |
| 5535314 |
Video image processor and method for detecting vehicles |
July 9, 1996 |
| A video image processor (100) for processing video images performing the steps of generating video images (103) with a multi-spectral video source (102), converting analog color data contained in the generated video images (103) to digital color data for subsequent signal processing, |
| 5535225 |
Time domain algebraic encoder/decoder |
July 9, 1996 |
| Apparatus for encoding and decoding the Alternant code family including three parallel special purpose Galois Field processors, and a timing and control unit. The special purpose processors jointly process a time domain algorithm relatively independently of the timing and control unit, a |
| 5535043 |
Replaceable actuator assembly for optical mirror with kinematic mount |
July 9, 1996 |
| A deformable mirror device which includes a deformable face plate, a backing plate spaced from the deformable face plate, and at least one axially movable actuator which extends between the face plate and the backing plate. The actuator is fixed adjacent a first end to the backing pl |
| 5534949 |
Two channel field sequential color display system |
July 9, 1996 |
| A two-channel field sequential display system utilizes both simultaneous and sequential color display methods to display full color images in a way that is less complex, smaller in size and less costly than prior art additive color systems, while exhibiting higher light output and fewer |
| 5534881 |
Microwave filter assembly having a nonsymmetrical waveguide and an antenna |
July 9, 1996 |
| A microwave cavity filter (30, 30A) is formed of a section of waveguide (36, 114) terminated by end walls (38, 40, 44, 166, 168, 176) to form cavities (32, 34, 32A, 34A) wherein ridges (100, 102, 118, 120) are disposed longitudinally within a cavity and extend from the cavity wall pa |
| 5534755 |
System for providing a constant current to a fluorescent tube |
July 9, 1996 |
| A system for energizing a fluorescent lamp by a current having an adjustable level of magnitude that is independent of the voltage across the fluorescent tube, which current is non-pulsing with the polarity being periodically changed at the conventional, 60 Hz rate of the AC power line |
| 5534700 |
Optical spectrometer system having a curved reflective imaging slit body |
July 9, 1996 |
| An optical spectrometer system that includes an optical element having a two-dimensional, curved, reflective, low emissivity slit body, or surround, in which an imaging slit is formed. The optical spectrometer system includes a detector, such as an infrared detector, for example, dis |
| 5534358 |
Iron-plated aluminum alloy parts |
July 9, 1996 |
| A process for plating aluminum alloy substrates (10), such as 390 aluminum alloy pistons (12), with iron comprises (a) plating on the aluminum substrate a layer of zincate from a zincate bath; (b) plating on the zincate layer a layer (14) of nickel from an electroless nickel bath; (c) |
| 5533417 |
Leadscrew assembly |
July 9, 1996 |
| A leadscrew assembly (10, 52, 82) having an externally threaded leadscrew (12) and first and second ball bearings (16, 18) disposed such that a segment of the inner races (24, 26) thereof makes contact with diametrically opposing portions of the leadscrew (12). |
| 5533133 |
Noise suppression in digital voice communications systems |
July 2, 1996 |
| Noise is suppressed during pauses and silent periods in conversation, and voiced signals are freely passed in a mobile communications system thereby improving the quality of the transmitted speech. Noise suppression is implemented in such a way that a low level of noise is still allowed |
| 5532867 |
Bias stabilization circuit and method for a linearized directional coupler modulator |
July 2, 1996 |
| A circuit and method for actively stabilizing the DC bias voltages applied to passive sections of a linearized directional coupler modulator. A reference electrical signal is applied to the active section of a linearized directional coupler modulator, thereby modulating an input opti |
| 5532667 |
Low-temperature-cofired-ceramic (LTCC) tape structures including cofired ferromagnetic elements, |
July 2, 1996 |
| A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic (LTCC) tape, and is chemically non-reactive therewith. The ferromagnetic material (18,20) |
| 5532632 |
Method and circuit for synchronizing an input data stream with a sample clock |
July 2, 1996 |
| A method and circuit for synchronizing input data with a sample clock in which, for each sample clock cycle, the position of input data transitions relative to an acceptable neutral zone is detected. The neutral zone is of predetermined time duration and is positioned in a predetermined |
| 5532486 |
Heterojunction diode with low turn-on voltage |
July 2, 1996 |
| A high speed diode with a low forward-bias turn-on voltage is formed by a heterojunction between a layer of doped semiconductor material that has a narrow bandgap energy of not more than about 0.4 eV, and a layer of oppositely doped semiconductor material that has a substantially wider |
| 5532470 |
Optical encoding and readout system using a liquid crystal modulator to encode light with an obj |
July 2, 1996 |
| An optical data encoding and readout system for identifying an object and providing sensor data related to the condition of the object includes a liquid crystal cell for receiving a polarized readout beam. A control circuit reads identification and sensor data codes stored in a prede |
| 5531974 |
Flux grown, monosize oxide particles |
July 2, 1996 |
| The preparation of an amorphous gel of a hydrated oxide is coupled with the technique of controlled seeding to obtain monosize crystallized particles. Crystalline oxide particles, such as phosphors, are formed by a method comprising: (a) selecting an oxide system; (b) forming an amorphou |
| 5531116 |
Apparatus and method for phase tomographic determination of fluid currents |
July 2, 1996 |
| An array of acoustic signal sources and sensors are positioned in a fluid. Acoustic signals propagated through the medium are subjected to phase differences as they pass through fluid currents. An eikonal description of the acoustic waves propagating through the fluid medium is used to d |
| 5529817 |
Inducing tilted parallel alignment in liquid crystals |
June 25, 1996 |
| A substrate is treated prior to use to induce a near-parallel orientation of a liquid crystal director relative to the substrate. A layer of silica is deposited on the substrate by in-line magnetron sputtering as the substrate is moved past the sputtering target, and the silica-coated |
| 5528826 |
Method of constructing high yield, fine line, multilayer printed wiring board panel |
June 25, 1996 |
| In the handling of printed wiring board innerlayer panels which have a thin copper-clad substrate, the protective foil layer is retained thereon to aid in stiffening the panel during processing up to the final stacking for multilayer lamination. At an intermediate step, the circuit patte |
