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| Number | Title | Issue Date |
| 4731567 | Method and apparatus for automated parts for storage and retrieval The invention comprises an automated system 10 for the accurate positioning of movable parts bins 16 in relation to a preferred fixed location 26. The automated system consists of a number of movable parts bins 16 arranged on a conveyor 14 which is driven... | 03/15/1988 |
| 4646094 | Method of discriminating between signals Discrimination between sidelobe and main beam reception of interference signals in a lobe on receive only radar is accomplished by a method of operation in which interference signals are stored and averaged for the radar receive beam positions of boresigh... | 02/24/1987 |
| 4644193 | Analog circuit for simulating a digitally controlled rheostat The simulation of a two-wire rheostat is accomplished by an analog output circuit whose value is digitally controlled. It comprises a four-quadrant multiplying digital to analog converter (MDAC) and a current booster including active elements in the feedb... | 02/17/1987 |
| 4641358 | Optical mark reader The reading of the presence or absence of a pencil or similar mark at various locations on a sheet of paper is accomplished by an optical Mark-Reader comprised of a completely solid state sensing mechanism with no moving parts. The Optical Mark Reader (OM... | 02/03/1987 |
| 4630246 | Seismic-acoustic low-flying aircraft detector The detection of low-flying aircraft is accomplished using both a microphone and geophone as sensors and a signal processing system for measuring the correlation between the seismic and acoustic signals. The signal processing system contains two amplifica... | 12/16/1986 |
| 4630004 | Dielectric resonator stabilized microstrip oscillator A microstrip L-band bipolar dielectric resonator stabilized oscillator (DRO) devised in a moderate size (2'×5"×3.6"), low-cost, reproducible circuit. Embedment of back to back varactors in the DRO provide voltage tuning for phase lock application withou... | 12/16/1986 |
| 4617633 | Direct lift command blending The rapid and precise control of an aircraft flight path is obtained by a continuous blending of direct lift and conventional longitudinal control system commands by a unit that consists of a combination of a linear gradient and breakout element, a blendi... | 10/14/1986 |
| 4611208 | Means for aligning elevation beam pattern along an isodop in synthetic aperture mapping radar Using an electronically scanned phased array antenna, a technique is developed for aligning a broad elevation beam along an isodop for use in synthetic aperture mapping. A beam steering controller algorithm for practical implementation of the technique is... | 09/09/1986 |
| 4608567 | Fast envelope detector with bias compensation In combination with an envelope detector in a radar system, a bias compensation circuit consisting of a programmable read-only memory and a binary adder produce an unbiased envelope detection signal. The bias compensation circuit adds one to the output of... | 08/26/1986 |
| 4586043 | Distribution sensitive constant false alarm rate (CFAR) processor In a radar receiver, a distribution sensitive constant false alarm rate processor derives the clutter threshold level from the average magnitude of echo return signals. The threshold level continuously adjusts to the changing conditions of the radar envir... | 04/29/1986 |
| 4585948 | Non-scanning integrated optical system with wide field of view search capability Very wide field of view optical surveillance is realized without scanning or moving parts by means of an integrated multiaperture optical system. The system utilizes light gathering optics in the form of an array of eyelets or lens apertures that direct i... | 04/29/1986 |
| 4586046 | Automatic reprogramming means for countermeasures system A countermeasures system technique for destroying threat radar frame of reference. Automatic change of false target pattern is accomplished by any one of three different switching schemes or by any combination of them. The switching schemes comprehend (a)... | 04/29/1986 |
| 4580107 | Phase lock acquisition system having FLL for coarse tuning and PLL for fine tuning The acquisition of phase lock to a reference frequency by a signal acquisition system is accomplished using a voltage controlled oscillator, a wideband frequency discriminator, a prepositioning circuit, and a phase lock loop. The voltage controlled oscill... | 04/01/1986 |
| 4575842 | Survivable local area network Enhanced availability and survivability of communications between geographically remote locations with a minimum of redundancy of transmission facilities and media is provided by a survivable bus network capable of providing continued interprocessor or ot... | 03/11/1986 |
| 4575724 | Parallel processor configuration for adaptive antenna arrays A signal processing system, which operates in parallel with the outputs of sensors of an adaptive array, for quickly nulling multiple jammers. The processing system includes a set of parallel combiners and an apparatus for updating a signal weight which i... | 03/11/1986 |
| 4573027 | Bulk acoustic resonator tracking filter This invention is directed to a narrow band filter for eliminating out-of-band noise in the oscillator signal of a doppler radar system. It provides a very high Q filter derived from a Bulk Acoustic Resonator's (BAR) high Q, L-Band response and uses therm... | 02/25/1986 |
| 4558445 | Applique rate converter The applique rate converter permits a digital multiplexer to support any data rate less than half of its input port design rate. The applique rate converter develops a composite data stream consisting of alternate data bits and data boundary bits. The dat... | 12/10/1985 |
| 4516816 | In circuit modification device for dual in line packaged components In circuit modifications of dual in line packaged (DIP) devices are realized by a circuit modification device that interfaces the DIP and its companion device. A first pair of single in line packaged (DIP) header pins are mounted on a printed circuit (PC)... | 05/14/1985 |
| 4513428 | Simultaneous detection of time coincident signals in an adaptive doppler tracker The performance of an adaptive digital doppler tracker having a sample data phase locked loop is improved by a circuit that detects and demodulates interfering signals. The tracker has a coherence sensor that provides signals indicating coherence and non-... | 04/23/1985 |
| 4513429 | Sample data phase locked loop for adaptive doppler tracker Precise phase acquisition and tracking of a data modulated pulse signal in order to recover the data in a low signal to noise ratio environment is achieved by a sample data phase locked loop that is adaptive, second order, and uses baseband polar coordina... | 04/23/1985 |
| 4489289 | Saw oscillator with digital compensation for temperature related frequency changes The inherent temperature instability of surface acoustic wave (SAW) clock oscillators is improved by the use of a thermometer oscillator circuit that senses temperature changes in the SAW substrate. The thermometer oscillator is used in combination with a... | 12/18/1984 |
| 4485314 | Power circuit utilizing self-excited Hall effect switch means A power circuit utilizing a switch comprised of Hall-effect-active resistive elements for interrupting a current flow in an inductive energy storage system. Interruption of the flow of current causes a high-voltage pulse which drives the current flow into... | 11/27/1984 |
| 4468624 | Programmable synchronous digital delay line A synchronous digital delay line that can be programmed by variable delay increments to independently delay the leading and trailing edges of a digital signal and that can be utilized to provide a wide range of digital delaying requirements. Bipolar input... | 08/28/1984 |
| 4454589 | Programmable arithmetic logic unit A programmable arithmetic logic unit for performing high speed bit sliced, pipelined computations at very low power is fabricated as an LSI component using CMOS/SOS technology. It is microprogrammable and operates in conjunction with a fast microprogram s... | 06/12/1984 |
| 4443766 | Precision digital sampler A precision digital sampler utilizes a sample rate clock providing pulses driving a tapped delay line where the total delay equals the Pulse Repetition Interval (PRI) of the sample clock. The outputs of the tapped delay line are tied to a buffer register ... | 04/17/1984 |
| 4442514 | Security system signal processor Alarm and intrusion type identification signals are derived from the output of a security system transducer by a signal processor. The signal processor conditions the transducer output signals to provide rectified and unrectified high pass and low pass fr... | 04/10/1984 |
| 4442523 | High power metal vapor laser A metal vapor laser, and, in particular, a lead vapor laser having a main discharge tube mounted within a pair of electrode support collars. A discharge electrode is mounted at one end of the laser which is sealed by a conventional window and reflector as... | 04/10/1984 |
| 4437748 | High illumination flashbulb array with firing sequence control means Sequential firing of strings of flashbulbs arranged in a parallel array is controlled by a shift register that functions in response to an IC 555 timer. The timer delivers a pulse train (the PRF of which can be set for appropriate firing intervals) that d... | 03/20/1984 |
| 4438395 | Current transformer high voltage probe utilizing copper sulfate water resistor A current transformer and copper sulfate water resistor are combined to provide a probe capable of measuring very fast, high voltage pulses. The resistor is connected in series with the primary winding of the current transformer and consists of an elongat... | 03/20/1984 |
| 4431864 | Communications system input-output converter An input-output converter permits the integration of terminals and transmit and receive equipments that operate at given logic voltage levels and character formats into communications system that operate at different logic voltage levels and character for... | 02/14/1984 |
| 4422647 | Volleyball out of bounds detecting and indicating system The detection and indication of volleyball out of bounds occurrences is realized by means of a light beam type system that distinguishes between the volleyball and other beam disrupting agents. Two juxtaposed light beams, one over the other, and separated... | 12/27/1983 |
| 4419595 | Analog or gate circuit The maximum instantaneous value of analog signals from multiple sources is detected by means of an analog OR gate circuit in which the analog signal from each input is connected to both a positive and a negative half wave rectifier circuit. The outputs of... | 12/06/1983 |
| 4409899 | Acoustic amplitude-doppler target ranging system An acoustic target sensor and ranging system automatically detects military targets and provides a munition firing signal at the appropriate target position and time. An amplitude-doppler circuit is utilized to predict the time of closest approach to a mu... | 10/18/1983 |
| 4409661 | Aimpoint selection processor The selection and designation of an aimpoint on a known type of target appearing in the field of view of a video tracking system imaging sensor is accomplished by (a) developing binary target patterns from quantized sensor data generated in the video trac... | 10/11/1983 |
| 4408533 | Acoustic amplitude-threshold target ranging system Munition actuation signals are generated by an acoustic target ranging system that predicts the time and distance of closest approach of a moving target to a munition. The predictive capability of the system is based on the rate of change of the sound lev... | 10/11/1983 |
| 4406627 | Waveform simulator for an electronic system maintenance trainer A maintenance training system capable of precisely simulating both the inner and the outward functions of original electronic equipment is realized by utilizing a programmable waveform generator, a microcomputer and interfacing input/output circuits in a ... | 09/27/1983 |
| 4403196 | Pulse width modulated power amplifier with differential connecting line voltage drop comparators The adverse effects of the impedance of long varying impedance connecting lines used in pulse width modulated power amplifier are eliminated by means of a dual input differential amplifier that senses the line voltage drops in the connecting lines and com... | 09/06/1983 |
| 4400669 | Magnetostatic wave delay line having improved group delay linearity The linearity of group delay versus frequency in magnetostatic wave delay lines is improved by a linear variation of one of three discrete parameters in the region between the two delay line transducers. The parameter variation is applied to magnetostatic... | 08/23/1983 |
| 4398085 | Universal timing array A universal timing array (UTA) comprising a branch and increment logic circuit and multiple 2-bit counter cells is fabricated as a single large scale integrated circuit and is adapted to implementing various timing and control functions in digital compute... | 08/09/1983 |
| 4397147 | Power circuit utilizing self excited Hall effect switch means A power circuit utilizing a switch comprised of Hall-effect-active resistive elements for interrupting a current flow in an inductive energy storage system. Interruption of the flow of current causes a high-voltage pulse which drives the current flow into... | 08/09/1983 |
