| Patent Number |
Title Of Patent |
Date Issued |
| 5442792 |
Expert system compilation method |
August 15, 1995 |
| A computer implemented compilation method or compiler and translator that automatically converts an interpretive rule-based expert system into compact, compiled, parallel Ada code. The present compiler customizes the compiled code for each desired knowledge base to produce just the minim |
| 5442746 |
Procedural user interface |
August 15, 1995 |
| A simplified procedural user interface ("PUI") for controlling the operation of a computer, defined in terms of the steps or procedures required to do a given operation. The PUI acts as a graphical checklist that indicates to the user what has to be done and then controls the operati |
| 5442706 |
Secure mobile storage |
August 15, 1995 |
| A method of secure data transfer by physical transport of an electronic storage device wherein the sender, using a type 1 encryption/decryption algorithm, sequentially encrypts data, in any order, with the public key of the receiver and the private key of the sender and then stores then |
| 5442650 |
Distributed talbot filter surface-emitting distributed feedback laser |
August 15, 1995 |
| A surface-emitting distributed Talbot filter laser that provides for radiation of energy in in-phase radiating modes to produce improved beam quality. The distributed Talbot filter laser of the present invention comprises a plurality of sets of parallel stripe contacts, wherein adjac |
| 5442342 |
Distributed user authentication protocol |
August 15, 1995 |
| A distributed authentication system that prevents unauthorized access to any computer system in a distributed environment. Authentication using the present invention involves three distinct phases. In the first phase, user passwords are generated by the computer system and encrypted on a |
| 5442268 |
Torque oscillation compensation using torque emulator/observer feedback |
August 15, 1995 |
| A torque oscillation compensation system and torque estimator that uses torque emulator/observer feedback derived from an electric vehicle motor drive train. The present torque oscillation compensation system is adapted for use with an electric vehicle comprising a source of torque comma |
| 5442166 |
Linear absolute position sensor |
August 15, 1995 |
| A position sensor includes a linear scale (14) that is translated along a translation axis of linear motion between at least two optical radiation source/receiver pairs (10/16 and 12/18). The optical transmissivity (or the optical reflectance) varies from a low value to high value going |
| 5441222 |
Attitude control of spinning spacecraft |
August 15, 1995 |
| The attitude of a spinning spacecraft (20) whose spin axis is substantially in the plane of the orbit is controlled without the use of reaction control thrusters. A two-axis gimbal (24) on which a momentun wheel (26) is mounted is secured to a central body (21). Two actuators (40, 42) ar |
| 5440428 |
Automotive instrument 3-D virtual image display |
August 8, 1995 |
| A compact, inexpensive and mass-producible optical display system for an automobile creates a dramatic and highly stylistic, sharp, high contrast and pleasing, multi-color or monochromatic 3-D magnified image of an instrument cluster, at least a portion of the 3-D image being located at |
| 5440390 |
Optical fiber polarimeter |
August 8, 1995 |
| A optical fiber polarimeter (10) includes a plurality of polarizing optical fibers (14) each having a different orientation with respect to a common reference line. A charge-coupled device having an array of pixels (32) is adapted to receive the light from the optical fibers (14) and gen |
| 5438361 |
Electronic gimbal system for electronically aligning video frames from a video sensor subject to |
August 1, 1995 |
| This invention is directed to an electronic gimbal system (10) which stabilizes a digital video image of a particular scene taken by a sensor which is under disturbance forces. The video image is stored as a two-dimensional array of pixel locations (12) and is applied to an address l |
| 5438167 |
Ferrimagnetic vias within multi-layer 3-dimensional structures/substrates |
August 1, 1995 |
| Ferrimagnetic structures formed of ferrimagnetic vias in a unitized multilayer microcircuit structure that is formed of a plurality of co-fired insulating layers. |
| 5437420 |
High torque double gimbal control moment gyro |
August 1, 1995 |
| A system and related method is provided for rapidly repointing spacecraft through the application of a high torque, of a gyroscope in which braking means (20, 22) provided on a gimbal (16, 18) is actuated simultaneously with the actuation of the torque motor (24, 26) to achieve amplifica |
| 5436973 |
Pseudo-random signal synthesizer with smooth, flat power spectrum |
July 25, 1995 |
| Apparatus and a method are disclosed for synthesizing a pseudorandom communications signal having a smooth, flat, power spectrum. The system comprises frequency modulation circuitry for deriving a first analog signal from a digital encoding signal. The first analog signal is derived |
| 5436955 |
Compatible analog channel unit for a digital cellular telephone system |
July 25, 1995 |
| A compatible analog channel unit for a digital cellular telephone system services both analog and digital mode subscribers on the same system hardware. The analog channel unit which may be configured by the service provider to permit easy upgrading of service during the life of the e |
| 5436805 |
Thermally insulated distributed light network from a central light source |
July 25, 1995 |
| A thermally insulated distributed light network employs an array of discrete, thermally insulative light guides that are spaced slightly away from a central light source and provide optical coupling to optical fibers that have a lower thermal capability. The light guides can either be so |
| 5436763 |
Wide spectral bandwidth virtual image display optical system |
July 25, 1995 |
| A virtual image display optical system. The system includes an image source, a combiner, and a relay group. The relay group is a catatrioptic relay group that includes a reflective optical element, and a refractive lens group that includes at least one doublet and a diffractive lens. For |
| 5436725 |
Cofocal optical system for thickness measurements of patterned wafers |
July 25, 1995 |
| An optical system for providing low and high resolution images of a patterned wafer to provide for film thickness measurements thereof. The optical system comprises a spectrally filtered light source for providing light to illuminate the wafer. A low resolution imaging system is provided |
| 5436568 |
Pivotable self-centering elastomer pressure-wafer probe |
July 25, 1995 |
| A test probe for testing an integrated circuit formed on an integrated circuit die. The probe comprises a printed circuit board interface having an opening in its center. A flexible membrane is formed on a bottom surface of the printed circuit board interface that is flexible in the |
| 5436201 |
Dual etchant process, particularly for gate recess fabrication in GaAs MMIC chips |
July 25, 1995 |
| A semiconductor substrate is etched in a two-step sequence, with two different liquid etchants that have different lateral etch rates. The relative time periods for which the etchants are applied are selected to achieve a close match between the actual etch profile and the desired pr |
| 5435856 |
Multiple-quantum-well semiconductor structures with selective electrical contacts and method of |
July 25, 1995 |
| A method is provided for forming selective electrical contacts on a structure of alternating ultrathin semiconductor layers of two different types, so that electrical connection can be made separately to the layers of a given type. Selective etching of first one type of layers at one sid |
| 5435733 |
Connector assembly for microelectronic multi-chip-module |
July 25, 1995 |
| A Multi-Chip-Module or MCM (66) is mounted on a supporting motherboard (64). A plurality of first contact pads (99) are formed on the module (66) adjacent to its peripheral edge for interconnection with microelectronic components (70,72,74,76,78) mounted on the module (66). Second contac |
| 5435646 |
Temperature measurement using ion implanted wafers |
July 25, 1995 |
| The value of an unknown test temperature is measured by heating a test wafer (58) to the unknown temperature, measuring the surface electrical resistivity of the test wafer (58), and determining the value of the unknown temperature from the measured surface electrical resistivity. The |
| 5434918 |
Method for providing mutual authentication of a user and a server on a network |
July 18, 1995 |
| An authentication method that permits a user and a file serving workstation to mutually authenticate themselves. This is accomplished by exchanging a random number that is encrypted by a password that is known to the user and stored in a password file on the file serving workstation. A l |
| 5434784 |
Vehicle steering wheel position sensing apparatus |
July 18, 1995 |
| This invention relates to an apparatus for sensing a vehicle steering wheel position. A permanent magnet target wheel having a global axial magnetic field normal to a first surface is attached to a steering shaft which is rotated by the steering wheel. Multiple regions equally spaced alo |
| 5434756 |
Distributed lighting system with fiber optic controls |
July 18, 1995 |
| A vehicle lighting system includes one or more central light sources, a plurality of optical loads including headlight lenses, an optical fiber network that extends from the light sources to illuminate the headlight lenses and other optical loads, and optical switches and oscillators tha |
| 5434662 |
Speckle resistant method and apparatus with chirped laser beam |
July 18, 1995 |
| Laser beam speckle effects are mitigated by frequency chirping a single-mode laser beam, reflecting it off a speckling surface, and then integrating the reflected beam over at least one chirp period. The speckle reduction is comparable to the use of a multi-longitudinal mode beam hav |
| 5434595 |
System and method for automatically correcting x-y image distortion in a display |
July 18, 1995 |
| A system for detecting and automatically correcting X-Y errors in displayed image data. In a specific implementation, the invention (6, 10) includes a display driver ( 12, 14, 16, 4 ) for commanding the display ( 2 ) to display a picture element of an image at a predetermined position on |
| 5434573 |
Three term ripple suppression |
July 18, 1995 |
| Three term ripple suppression apparatus for suppressing ripple in a radar image derived from received radar signals. The ripple suppression apparatus comprises a field programable gate array having a radar signal input, a clock signal input, a code select signal input, and a radar si |
| 5434493 |
Fixed core inductive charger |
July 18, 1995 |
| An inductively-coupled transformer charging apparatus comprising a charging port having a nonmoving secondary core and a charging coupler that is insertable therein. The charging coupler comprises a primary winding disposed around a primary core. The charging port comprises a fixed s |
| 5434022 |
Electrodes and electrochemical storage cells utilizing tin-modified active materials |
July 18, 1995 |
| An electrode has a substrate and a finely divided active material on the substrate. The active material is ANi.sub.x-y-z Co.sub.y Sn.sub.z, wherein A is a mischmetal or La.sub.1-w M.sub.w, M is Ce, Nd, or Zr, w is from about 0.05 to about 1.0, x is from about 4.5 to about 5.5, y is from |
| 5433791 |
MBE apparatus with photo-cracker cell |
July 18, 1995 |
| Ultraviolet (UV) light from a lamp or UV laser, such as a metal can short arc xenon lamp or excimer laser, respectively, is provided for cracking Group V and Group VI species comprising clusters (dimers and tetramers) or metal-organic molecules to form monomers (atoms). The UV radiation |
| 5432822 |
Error correcting decoder and decoding method employing reliability based erasure decision-making |
July 11, 1995 |
| A receiver (30) in a digital communication system determines the phase error magnitude (60) and the magnitude error (54) for each received channel symbol and selects Reed-Solomon symbol erasures from the magnitude error and phase error magnitude values as a function of mobile unit speed |
| 5432638 |
Spatially tunable rugate narrow reflection band filter and applications therefor |
July 11, 1995 |
| An optical system (20) includes an optical filter (10) having a radiation receiving surface. The filter including a rugate reflection filter having a reflection wavelength characteristic that varies along an axis of the radiation receiving surface. The optical filter includes a plurality |
| 5432520 |
SAR/GPS inertial method of range measurement |
July 11, 1995 |
| A method that provides precise target location measurement using a synthetic aperture radar (SAR) system jointly with a global positioning inertial navigation system (GPS/INS) located on a moving aircraft. The SAR system provides a precise measurement of the round trip elapsed radar wave |
| 5432119 |
High yield electron-beam gate fabrication method for sub-micron gate FETS |
July 11, 1995 |
| Yields of FETs such as HEMTs are significantly improved by establishing an elongate gate contact opening in a patterning material with the patterning material over-hanging the opening along both its elongate sides and its ends. A contact metal is next evaporated both into the opening and |
| 5431805 |
Composition for forming controlled tin-lead solder alloy composition |
July 11, 1995 |
| A composition for forming an electrodeposited tin-lead alloy of controlled composition comprising:(a) about 1.5 to 1.8 percent by weight lead fluoroborate;(b) about 2.5 to 2.75 percent by weight tin fluoroborate;(c) about 91 to 92 percent by weight fluoroboric acid;(d) about 2.7 to 3.4 percent b |
| 5430361 |
Integrated anti-backlash gearhead motor |
July 4, 1995 |
| A drive system comprising an integrated gearhead motor system that produces relatively high torque output with minimal backlash. The present invention uses two axially mounted electric or air motors and gearhead assemblies integrated into a single unit. The two motor and gearhead assembl |
| 5430228 |
Ozone methods for the destruction of chemical weapons |
July 4, 1995 |
| A transportable ozone neutralization system (10) for neutralizing a chemical compound is provided. The neutralization system (10) includes an enclosure (12) for substantially containing a container, such as a chemical munition (28), within which the chemical compound to be neutralize |
| 5429859 |
LTCC alignment marks for mechanical parts placement |
July 4, 1995 |
| A unitized multilayer circuit structure including a plurality of planar dielectric insulating layers stacked in laminar fashion to form a substrate having sides, and at least one alignment groove formed in one side of the substrate. |
| 5429732 |
High rate ion beam sputtering process |
July 4, 1995 |
| An ion beam sputtering process for fabricating a multilayer optical coating. The process adds energy to surface atoms of a sputtering target to increase deposition rates of atoms comprising the optical coating, thereby improving yield. The present process comprises providing a sputte |
| 5428816 |
Method and apparatus for mobile assisted handoff |
June 27, 1995 |
| A method and system for selecting the best handoff candidate cell at times when the number of neighboring cells that meet the measurement criteria is greater than twelve a measurement list is generated. The cells are assigned a handoff measurement priority wherein a handoff priority of z |
| 5428809 |
High speed parallel microcode program controller with high efficiency instruction set for ASIC |
June 27, 1995 |
| A microprogram controller selects a sequence of low, gate level instructions (microcode) to execute a higher level (assembly language level) instruction. The controller includes a plurality of accessing elements for accessing a microinstruction from a corresponding plurality of diffe |
| 5428603 |
Synchronous time division multiple access interrogate-respond data communication network |
June 27, 1995 |
| A communication network and method employing chained sequences of communications devices, to support synchronized relaying of data, thus forming duplex data buses. These data buses support both synchronous virtual circuits and a form of synchronized interrogate-respond data transfer. |
| 5428364 |
Wide band dipole radiating element with a slot line feed having a Klopfenstein impedance taper |
June 27, 1995 |
| A wideband radiating element including an input mechanism for receiving electromagnetic energy from a source and a balanced feeding mechanism extending from the input mechanism for transmitting the electromagnetic energy and for providing impedance matching over a range of frequencies. |
| 5428322 |
Microwave waveguide multiplexer |
June 27, 1995 |
| A right angle waveguide junction for a microwave multiplexer is provided including a step in one of the waveguides for improved electrical response. A rectangular waveguide manifold (10) is coupled to a filter (12) which includes a coupling iris (14) and a circular cavity resonator ( |
| 5428305 |
Differential logic level translator circuit with dual output logic levels selectable by power co |
June 27, 1995 |
| Switching between two logic circuits that produce outputs at different respective logic levels is accomplished by means of a common input differential switch that has a branch in each logic circuit. A common current source supplies current to the branches within each logic circuit. T |
| 5426976 |
Method and apparatus for detecting the position of liquid-liquid interfaces |
June 27, 1995 |
| Precise information about the position of a liquid-liquid interface (28, 32) is often important for the control and automation of molten metal refining processes. For example, in an electrolytic process for removing magnesium from molten aluminum, knowledge of the vertical position of an |
| 5426661 |
Pulsed laser discharge stabilization |
June 20, 1995 |
| Low power discharge preionizers, or species, are provided by a ionizable species generator that preconditions a laser gas to eliminate arcing in lasers, such as pulsed (high repetition rate) lasers. The present invention creates the species in a low power discharge and the species pr |
| 5426072 |
Process of manufacturing a three dimensional integrated circuit from stacked SOI wafers using a |
June 20, 1995 |
| A method of providing a first and a second Silicon-on-Insulator (SOI) wafer, wherein each SOI wafer includes a silicon layer separated from a bulk silicon substrate by a layer of dielectric material, typically SiO2. Next, at least one electrical feedthrough is formed in each of the silic |
