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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 6078750 | Dual exposure photographic apparatus and method of operating same A camera according to the present invention includes a first cavity to accommodate conventional film material having multiple frames, each frame having a corresponding indicia disposed on the conventional film material to identify the corresponding frame ... | 06/20/2000 |
| 5933278 | Monolithic multi-faceted mirror for combining multiple beams from different light sources by reflection A device for redirecting beams of light emitted from different sources includes: a monolithic stationary substrate having alignment surfaces for aligning the device for mounting into a system; multiple facets resident on the substrate including at least t... | 08/03/1999 |
| 5923380 | Method for replacing the background of an image The present invention is useful in taking a visible light image for identification and other purposes without the requirement of a photobooth, regardless of the background of the visible light image. The original background of the visible light image is r... | 07/13/1999 |
| 5887084 | Structuring a digital image into a DCT pyramid image representation A method or system for structuring an image which corresponds to an original array of pixels, as a forward discrete even cosine transform (DCT) pyramid having a predetermined number of levels where each level is associated with a different DCT frequency b... | 03/23/1999 |
| 5870505 | Method and apparatus for pixel level luminance adjustment A method for adjusting the luminance IMHI of pixels in a high resolution image includes first forming a low resolution image of the original by grouping pixels into superpixels such as 8×8 blocks. A low resolution luminance correction value δ... | 02/09/1999 |
| 5828908 | Photo cabin The photo cabin of the invention provides a background for an image, subject lighting and possibly support for an external camera; furthermore, the photo cabin is foldable, thereby facilitating transport, handling and storage. Electrical power and signal ... | 10/27/1998 |
| 5809220 | Fault tolerant distributed control system A fault tolerant distributed intelligence control system for sensing and control across fault tolerant fiber optic communication media interconnecting a plurality of intelligent nodes. Each intelligent node comprises a digital control and communication pr... | 09/15/1998 |
| 5796935 | Voting node for a distributed control system An intelligent voting node for a multiple node, fault tolerant, distributed intelligence control system having a plurality of optically isolated relays for connecting a power source to a load device and providing total optical isolation for processors of ... | 08/18/1998 |
| 5755400 | Inertial instrumentation correction technique A technique for deriving correction signals for inertial instruments on a missile, such as an intercontinental ballistic or a cruise missile, is shown to include: a radar operative in a synthetic aperture mode when the missile approaches a predetermined a... | 05/26/1998 |
| 5734389 | Radar system and method of operating same A proximity fuze radar system is described including a transmitter for transmitting a signal modulated by a pseudo-random noise code signal and a receiver for receiving signals including the modulated signal reflected by an object or target. The proximity... | 03/31/1998 |
| 5706278 | Deterministic network protocol A deterministic network protocol for connecting critical sensors, actuators and computing elements on a bi-directional, time-multiplexed, fiber optic or other media data bus, such that critical messages have concisely bounded latency and non-critical mess... | 01/06/1998 |
| 5705940 | Logic family for digitally controlled analog monolithic microwave integrated circuits A transmit/receive module including digitally controlled analog circuits is described. The digital circuits use a logic family adapted for use with analog monolithic integrated circuits. The disclosure also describes a preferred process to provide digital... | 01/06/1998 |
| 5688699 | Microbolometer A method is provided for forming a bolometer having an infrared sensitive material disposed on a platform elevated over a surface of a semiconductor body. The method includes forming a thermally insulating support layer to provide the platform and legs fo... | 11/18/1997 |
| 5677833 | Power conditioning system for a four quadrant photovoltaic array with an inverter for each array quadrant A photovoltaic (PV) power system having distributed square wave current DC to AC inverters integral with strings of PV cells in a PV array. The PV array is arranged into four quadrants and phase-shifted and summed AC voltages from each quadrant are furthe... | 10/14/1997 |
| 5675345 | Compact antenna with folded substrate An antenna having: a beam forming network; an array of antenna elements; and a parallel plate region coupling the array of antenna elements and the beam forming network formed on a common, folded dielectric substrate. The beam forming network includes str... | 10/07/1997 |
| 5666373 | Laser having a passive pulse modulator and method of making same A laser having a gain medium disposed in a resonant cavity having a pair of end reflectors. One of such reflectors has a reflectivity lower than the reflectivity of the other one of the reflectors. The reflectors are arranged to provide a single ended out... | 09/09/1997 |
| 5654716 | Circuit for short duration multiple look pulse based frequency measurement A low cost automatic frequency control system measures short duration radio frequencies with high a degree of accuracy within 0.5 MHz. The system is programmable to allow applicability over a wide range of frequencies within the required accuracy and vari... | 08/05/1997 |
| 5646450 | Semiconductor structures and method of manufacturing A semiconductor structure is described having a first electrode and a second electrode disposed on a surface of the structure and a bridging conductor connected between the first electrode and the second electrode. The bridging conductor includes a plural... | 07/08/1997 |
| 5646625 | Radar system A radar system having a radar transmitter and a radar receiver. The radar receiver includes a "local" receiving station and a "remote" located antenna station. A feedthrough nulling system is provided. The nulling system includes a "remote" combiner for p... | 07/08/1997 |
| 5633649 | Radar system and components therefore for transmitting an electromagnetic signal underwater An antenna for transmitting electromagnetic signals having a frequency less than 500 Hz includes a beam of dielectric material and a conductive sheet wound in a helical pattern around the beam of dielectric material. The antenna further includes a core fa... | 05/27/1997 |
| 5629705 | High range resolution radar system A radar system is provided to track radar energy reflected by a point on the target different from the centroid of a target's radar reflected energy. The radar system includes a target angle/range tracking system and a target energy monitoring/range track... | 05/13/1997 |
| 5626311 | Method of guiding missiles A method of guiding missiles in the terminal phase of an intercept. An image of the target area is stored as a reference. The reference is expanded by an amount which increases as the missile approaches the target. The expanded reference is then correlate... | 05/06/1997 |
| 5610613 | Analog to digital conversion system A system for obtaining digitized samples of an analog signal at a selectable rate, R. The system includes: a timing generator for producing a train of sampling pulses at a predetermined sampling rate, fs ; an analog to digital converter for pro... | 03/11/1997 |
| 5606324 | Radar system A radar system having a transmitter for transmitting a series of radio frequency (RF) pulses with sequential, incrementally changing carrier frequencies. A receiver receives energy from multiple scattering points of an object reflecting such transmitted R... | 02/25/1997 |
| 5596229 | Chip carrier structure A chip carrier structure for containing a chip carrier having electrical contact pads having a positioning structure for the chip carrier and a slotted structure mated to form a mated structure containing said chip carrier, the slots of the slotted struct... | 01/21/1997 |
| 5594979 | Method for packaging a surface acoustic wave device A pair of crystallographically matched piezoelectric substrates are sealed together to provide a package for a SAW device. A sealant material including a glass frit is deposited on a selected portion of a first one of the pair of substrates. The substrate... | 01/21/1997 |
| 5592178 | Wideband interference suppressor in a phased array radar A phased array radar antenna uses time-steering subarray notch weightings to produce a wideband notch in the direction of interference for Electronic-Counter-Measure (ECM) interference suppression. A predetermined set of subarray notch weightings, each se... | 01/07/1997 |
| 5585288 | Digital MMIC/analog MMIC structures and process A transmit/receive module including digitally controlled analog circuits is described. The digital circuits use a logic family adapted for use with analog monolithic integrated circuits. The disclosure also describes a preferred process to provide digital... | 12/17/1996 |
| 5568105 | Spurious frequency suppressor Spurious frequencies are suppressed in a transmitter by an RF pulse fall time controller circuit comprising a quadrature hybrid matched attenuator located between a predriver and the first stage of class "C" driver amplifiers. The circuit linearly attenua... | 10/22/1996 |
| 5561429 | Content limit addressable memory A content limit addressable memory (CLAM) having a plurality of lower and upper limits stored therein for comparison to corresponding subfields of an input word. Each corresponding upper and lower limit forms a bracket. Corresponding brackets form a windo... | 10/01/1996 |
| 5543691 | Field emission display with focus grid and method of operating same A field emission display having a plurality of pixels is disclosed wherein each pixel includes a cathode with a plurality of field emitters and corresponding gate electrodes to emit electrons, an anode distally disposed with respect to the cathode, the an... | 08/06/1996 |
| 5530681 | Cascaded shift register beamformer Charge coupled shift registers for sonar beamforming provide many channels of high resolution large delays by the cascading of two registers. Two equivalent embodiments are disclosed. In one embodiment the shift rate of the input shift register is an inte... | 06/25/1996 |
| 5479090 | Power converter having optimal dynamic operation A DC to DC, fixed frequency, Buck family power converter having a first feedback control loop for regulating output current or output voltage depending on the operational mode selected, a second feedback control loop for current mode control and a third f... | 12/26/1995 |
| 5451969 | Dual polarized dual band antenna An antenna system is described including a reflector antenna, responsive to radio frequency signals at a first frequency, having a first reflector surface, a second reflector surface and a Cassegrain feed. The antenna system further includes an array ante... | 09/19/1995 |
| 5443688 | Method of manufacturing a ferroelectric device using a plasma etching process A method of patterning a film of PZT material comprises the steps of providing a mask over a selected surface portion of the PZT material; and, plasma etching unmasked portions of the thin film material. The method includes the steps of: introducing a gas... | 08/22/1995 |
| 5440654 | Fiber optic switching system A data communication system comprising a plurality of fiber optic cables and a fiber optic switching system, comprising: a support structure for securing light emitting/light receiving ends of the plurality of fiber optic cables in predetermined positions... | 08/08/1995 |
| 5438553 | Transducer A transducer having an energy conversion medium for converting changes in applied mechanical energy into corresponding changes in thermal energy and a pyroelectric material in thermal energy transfer relationship with the energy conversion medium for prod... | 08/01/1995 |
| 5438552 | Sonar system for identifying foreign objects A sonar system is provided for identifying a foreign object includes a technique for providing a two dimensional array of pixels, each one of the pixels representing the intensity of a signal at a predetermined range position and a predetermined cross-ran... | 08/01/1995 |
| 5425514 | Modular aerodynamic gyrodynamic intelligent controlled projectile and method of operating same A spinning projectile is described including a roll rate sensor for providing a spin frequency signal, a nutation frequency signal and a precession frequency signal and a seeker for providing a boresight angle signal. The spinning projectile further inclu... | 06/20/1995 |
| 5424742 | Synthetic aperture radar guidance system and method of operating same A synthetic aperture radar guidance system adapted for use in a guided missile is described wherein the frequency of the transmitted pulses changes with time with a chirp slope which varies with range. The time between pulses also changes as a function of... | 06/13/1995 |
