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| Number | Title | Issue Date |
| 4860373 | Location dependent signal processor A location dependent signal processor for radiant energy detector arrays which include two-dimensional spatial filtering and/or background normalizing, with means providing programmed control of the signal processor filter weighting and normalizer thresho... | 08/22/1989 |
| 4760541 | Two dimensional digital spatial filter for enhancement of point sources A point source spatial filter determines the quality of a central point source or pixel under test to thereby detect point sources and minimize the signals from all sources other than the desired point source. The spatial filter incorporates a buffer appa... | 07/26/1988 |
| 4675681 | Rotating planar array antenna A planar array antenna is contructed of two sets of slotted rectangular waveguides positioned to have the slots of adjacent waveguides offset by half the slot spacing. A bidirectional feed is used with phase switching between inputs to produce four distin... | 06/23/1987 |
| 4653069 | Spread spectrum correlation receiver A spread spectrum communication system having a correlation receiver for decoding an information signal transmitted on a pseudo-noise (PN) carrier. The receiver synchronizes to the transmitted signal by performing a continuous sequence of correlations unt... | 03/24/1987 |
| 4628320 | Cancellation of scatter jamming In side-lobe cancelling equipment direct jammer signals appearing in an auxiliary antenna channel are better correlated with reflected jammer signals in a main antenna channel by splitting the signal in the auxiliary channel into two parts, one of which i... | 12/09/1986 |
| 4586038 | True-perspective texture/shading processor A low cost, true-perspective texture/shading processor (16) for a raster graphics display is based on a mathematical model which defines modulations globally over the entire simulated, visual environment. The model uses planes defined in three-dimensional... | 04/29/1986 |
| 4583185 | Incremental terrain image generation An algorithm for the real-time computer generation of visual scenes reduces the processing of elevation data to simple repetitive accumulations and a compare opertion to generate occult data using grid elevation data bases. The approach, when implemented ... | 04/15/1986 |
| 4581614 | Integrated modular phased array antenna A modular integrated multi-element phased array antenna. The antenna is comprised of a supporting structure having a plurality of slotted, ridged waveguide radiator elements longitudinally extending therein and a single series ridged waveguide feed struct... | 04/08/1986 |
| 4570166 | RF-Transparent shield structures An RF transparent antenna shield structure is disclosed particularly useful for missile nose cone radome and other severe environment applications. The structure comprises a solid metal wall member perforated to form a triangular grid array of windows eac... | 02/11/1986 |
| 4505558 | Method of modifying projected images A method of modifying projected images is disclosed wherein light is projected on a screen in a manner which provides information concerning the desired characteristics of the image. The parameters of optical attenuators required to obtain the desired ima... | 03/19/1985 |
| 4504821 | Integrated circuit board system and an integrated circuit board assembly for application thereto A passive programmed array is provided for each printed circuit board of a control system. The passive programmed array provides the logic connectors for the circuit elements mounted upon the printed circuit board, and includes an electronic key to ensure... | 03/12/1985 |
| 4502015 | Diode detector with linearity compensating circuit The detector circuit disclosed comprises a semiconductor diode bridge providing full wave output through an operational amplifier. The amplifier is enclosed within a feedback loop in which is interposed at least one diode matched to the detector diodes so... | 02/26/1985 |
| 4495446 | Lighting unit with improved control sequence An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The lighting unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source.... | 01/22/1985 |
| 4471268 | Lighting unit having power supply with improved switching means An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The lighting unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source.... | 09/11/1984 |
| 4464607 | Lighting unit An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The light unit utilizes a metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source. Th... | 08/07/1984 |
| 4456910 | Non-complementary metal oxide semiconductor (MOS) driver for liquid crystal displays The present invention relates to a PMOS or NMOS driver for a liquid crystal display. The driver is designed for ac excitation of the display with a minimum dc component, and with minimum excitation of "off" segments for optimum display performance. The dr... | 06/26/1984 |
| 4454552 | Printed circuit board connection system A printed circuit board connection system provides multiple voltage level interconnection to each individual printed circuit board of a multiple board system via a common circuit board connector mounted on a backplane. Power supply and logic signals at ea... | 06/12/1984 |
| 4453094 | Threshold amplifier for IC fabrication using CMOS technology The present invention relates to a threshold amplifier suited to integrated circuit fabrication of a process employing CMOS technology. The threshold amplifier is designed to sense current producing a first or a second logic level as a function of a curre... | 06/05/1984 |
| 4450541 | Bias compensated optical grating hydrophone An optical grating hydrophone employs a dual grating construction and two pairs of optical fibers to provide a reliable output signal without the need for mechanically adjusting the system bias. A bias compensation circuit selects the output signal to be ... | 05/22/1984 |
| 4434397 | Remote load current sensor Antenna arrays with more than one radiating element often require a calibration or adaptive technique to monitor the individual antenna currents and provide some form of correction. This invention is directed to a system of directional couplers and transm... | 02/28/1984 |
| 4394630 | Compensated directional coupler Transmission line directional coupler directivity is improved by providing compensation for even and odd mode phase velocity differences. Teeth are added to the edges of the coupler electrodes remote from the coupling region separating the electrodes, so ... | 07/19/1983 |
| 4378531 | Negative resistance oscillator suited for partial integration A novel negative resistance oscillator is disclosed for partial integration. The oscillator has a tank circuit and a load, which are non-integrated, and active circuitry, which is integrated. The active circuit consists of a current "source" and two curre... | 03/29/1983 |
| 4372597 | Submersible equipment handling system A handling system for lowering and retrieving large and heavy objects such as sonar arrays from surface ships and other unstable platforms. A submersible object which normally is suspended by a single cable when at operating depth is retrieved and returne... | 02/08/1983 |
| 4349915 | Minimization of multipath and doppler effects in radiant energy communication systems Apparatus is disclosed for reproducing transmitted information which is subject to multipath delay spread effects and doppler frequency-shift effects. The information is transmitted as a series of modulated information pulses of differing nominal frequenc... | 09/14/1982 |
| 4321526 | Ripple current stabilized control loop for switching regulator A free-running switching regulator of the type including a transistor switch serially-connected between a voltage source and a load is disclosed. The duty cycle of the switch is varied in response to changes in the load voltage to maintain it at a predete... | 03/23/1982 |
| 4315746 | Horizontal beam width integrator A beam width integrator is provided for a radar simulation system in which a synthetic radar image is generated from echoes comprised of simulated echo contributions. The amount of special-purpose digital equipment required is significantly reduced, toget... | 02/16/1982 |
| 4303898 | Longitudinally flanged waveguide Rectangular waveguides adapted for combination as cross-guide couplers are disclosed. Each waveguide includes opposing sidewalls, a coupling wall and flanges extending from the sidewalls. Each flange has a contact surface in parallel with the coupling wal... | 12/01/1981 |
| 4301520 | Differential row readout of CID imagers A row-read technique, utilizable with conventional CID array imagers, is provided for reading image intensity information from such imagers and for differentially cancelling noise common to all rows during production of an output signal representative of ... | 11/17/1981 |
| 4295159 | Light projection system Apparatus and method are disclosed directed to a real time, electro-optical light projection system, wherein at least one selected target is displayed on a high resolution mini-raster, differentiated from a coarse resolution base raster background. A full... | 10/13/1981 |
| 4277787 | Charge transfer device phased array beamsteering and multibeam beamformer A phased array radar system is disclosed, capable of simultaneously transmitting beams in different directions as well as simultaneous multiple beam beamforming with both linear and planar arrays. The system employs charge transfer device complex matrix m... | 07/07/1981 |
| 4258308 | Switching regulator with flyback control offset A switching regulator having a solid state switch which turns on and off as needed to maintain output regulation, a choke which tries to maintain constant current flow, a voltage and current comparator which controls the solid state switch, and a flyback ... | 03/24/1981 |
| 4244026 | Velocity measuring correlation sonar The velocity measuring correlation sonar disclosed employs a planar array of receiving transducers spaced in the directions along which velocity components parallel to the plane of the array are to be measured, and includes means for transmitting a series... | 01/06/1981 |
| 4240036 | Linearized three-state switching amplifier A pulse width modulated switching amplifier is provided for amplifying an analog signal. Means is provided for producing positive and negative signals representative of positive and negative excursions of the analog signal, respectively. The positive and ... | 12/16/1980 |
| 4204211 | Controllable saturation sidelobe canceller An intermediate frequency sidelobe canceller with provision for controlling the saturation level of the cancellation loop. Such control is provided by interposition of limiter means at a particular point in the cancellation loop, and it enables the settin... | 05/20/1980 |
| 4185414 | Feed regulator for nutrient film agriculture system Nutrient feed regulation systems for automatic control of nutrient flow rates in controlled environment agriculture installations utilizing nutrient film techniques. Such control is provided by feed regulators each including means defining a metering orif... | 01/29/1980 |
| 4163342 | Controlled environment agriculture facility and method for its operation This disclosure is of a controlled environment agriculture system in which a plurality of plant grow support racks are arranged in an array complementary to that of the lamps which provide illumination for the grow racks, so as to provide two positions fo... | 08/07/1979 |
| 4106462 | Ignition system control circuit The invention discloses an ignition system control circuit which may be mounted within a distributor housing such as is used with internal combustion engines. The ignition system control circuit is coupled to a direct current source and appropriately conn... | 08/15/1978 |
| 4074182 | Power supply system with parallel regulators and keep-alive circuitry A dc power supply system comprising two or more voltage regulator units connected in parallel to a common load, there being at least one more regulator unit provided than is required to meet the rated load current requirement. The spare or redundant regul... | 02/14/1978 |
| 4044359 | Multiple intermediate frequency side-lobe canceller 1. In an undesired signal canceller, a main signal transmission channel having an output terminal, a plurality of auxiliary signal transmission channels having output terminals, means for cross coupling each of said auxiliary channels separately to said m... | 08/23/1977 |
| 4041442 | Acoustic data acquisition system A data acquisition system is provided for acquiring acoustic information from an array placed in a body of water and for transmitting the information through a single transmission line to remotely located data processing equipment. The array includes a pl... | 08/09/1977 |
